CN219386691U - A connection structure and modularization building for modularization building - Google Patents

Abstract

The utility model provides a connection structure for a modularized building and the modularized building, wherein in the connection structure, the lower plate surface of a connection plate is provided with at least one first shear key protruding from the lower plate surface and used for being embedded into a lower layer module, the upper plate surface of the connection plate is provided with second shear keys protruding from the upper plate surface and used for being embedded into an upper layer module, the first shear keys are provided with first mounting holes extending along the up-down direction, and the second shear keys are provided with second mounting holes extending along the up-down direction; the first end of the first connecting rod is used for being installed in the first installation hole, and the first fastener is used for being connected with the second end of the first connecting rod so as to fasten the first connecting rod on the lower layer module; the first end of the second connecting rod is used for being installed in the second installation hole, and the second fastener is used for being connected with the second end of the second connecting rod so as to fasten the second connecting rod on the upper module. Has strong shearing resistance, low cost and simple construction.

Description

A connection structure and modularization building for modularization building

Technical Field

The utility model relates to the technical field of box-type module building structures, in particular to a connection structure for a modularized building and the modularized building.

Background

The modular building is a highly integrated assembly type building, the building is split into module units which are integrated with curtain walls, structures, electromechanics and decoration, integrated production is completed in a factory, and the module units are transported to the site for simple assembly connection and can be put into use.

The connection between the modular units is the most important one in a modular building, which determines the integrity, safety and efficiency of the field installation of the modular building. The connecting structure between the conventional commonly used module units comprises a cover plate bolt connecting structure, a flat plate brazing pin connecting structure and a prestress connecting structure (see technical standards of light modular steel structure combined house). Wherein, apron bolted connection structure has following shortcoming: the shearing resistance is weak, and the method is suitable for low-layer structures; the flat plate brazing pin connection structure has the following defects: the construction is complex, and the interior decoration of the module can be damaged; the prestressed connection structure has the following disadvantages: the prestress construction is needed, the construction is complex, and the manufacturing cost is high.

Therefore, there is a need for a connection structure between modular units that has high shear resistance, is simple to construct, and is inexpensive to manufacture.

Disclosure of Invention

First, the technical problem to be solved

In view of the problems with the above-described techniques, the present utility model addresses, at least to some extent. To this end, a first object of the present utility model is to propose a connection structure for modular construction, which is resistant to shearing, low in cost and simple to construct.

A second object of the present utility model is to propose a modular building with a connection structure for modular buildings as described above.

(II) technical scheme

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:

in a first aspect, the present utility model provides a connection structure for a modular building, comprising a connection plate, a first connection rod, a second connection rod, a first fastener and a second fastener; the lower plate surface of the connecting plate is provided with at least one first shear key protruding out of the lower plate surface and used for being embedded into the upper end plate preformed hole of the lower module supporting column, the first shear keys of the upper plate surface of the connecting plate are provided with second shear keys protruding out of the upper plate surface and used for being embedded into the lower end plate preformed hole of the upper module supporting column, the first shear keys are provided with first mounting holes extending along the up-down direction, and the second shear keys are provided with second mounting holes extending along the up-down direction; the first end of the first connecting rod is used for being installed in the first installation hole, and the first fastener is used for being connected with the second end of the first connecting rod so as to fasten the first connecting rod on the installation plate of the lower module support column; the first end of the second connecting rod is used for being installed in the second installation hole, and the second fastener is used for being connected with the second end of the second connecting rod so as to fasten the second connecting rod on the installation plate of the upper module support column.

Optionally, the number of the first shear keys is the same as the number of the lower modules in the horizontal direction at the connection node in the modular building, and the first shear keys are arranged in one-to-one correspondence with the lower modules in the horizontal direction at the connection node, and each first shear key is used for being embedded in the corresponding lower module.

Optionally, a first shear key is arranged on the upper plate surface of the connecting plate; or two first shear keys are arranged on the upper plate surface of the connecting plate; or, the upper plate surface of the connecting plate is provided with four first shear keys.

Optionally, the first fastening piece is a first bolt, the second fastening piece is a second bolt, the second end of the first connecting rod is provided with a first thread groove, and the second end of the second connecting rod is provided with a second thread groove; the first end of the first connecting rod is fixedly arranged in the first mounting hole, and the first bolt is in threaded connection with the first thread groove so as to fasten the first connecting rod on the mounting plate of the lower module support column; the first end of second connecting rod is used for fixed mounting in the second mounting hole, and the second bolt is used for with second thread groove threaded connection in order to fasten the second connecting rod on the mounting panel of upper module support column.

Optionally, the first mounting hole and the second mounting hole which are correspondingly arranged are communicated to form a pull rod mounting hole, the first connecting rod and the second connecting rod are connected into a whole to form a pull rod, a first thread groove is formed in the first end of the pull rod, a second thread groove is formed in the second end of the pull rod, the first fastening piece is a first bolt, and the second fastening piece is a second bolt; the pull rod is used for penetrating and installing in the pull rod installing hole, the first bolt is used for being in threaded connection with the first thread groove so as to fasten the pull rod on the installing plate of the lower module supporting column, and the second bolt is used for being in threaded connection with the second thread groove so as to fasten the pull rod on the installing plate of the upper module supporting column.

Optionally, the first fastening piece is a first nut, the second fastening piece is a second nut, the first connecting rod is a first screw rod, and the second connecting rod is a second screw rod; the first end of the first screw rod is used for being fixedly installed in the first installation hole, and the first nut is used for being in threaded connection with the second end of the first screw rod so as to fasten the first screw rod on the installation plate of the lower module support column; the first end of second screw rod is used for fixed mounting in the second mounting hole, and the second nut is used for with the second end threaded connection of second screw rod in order to fasten the second screw rod on the mounting panel of upper module support column.

Optionally, the first mounting hole and the second mounting hole which are correspondingly arranged are communicated to form a screw mounting hole, the first connecting rod and the second connecting rod are connected into a whole to form a screw, the first fastening piece is a first nut, and the second fastening piece is a second nut; the screw rod is used for penetrating and installing in the screw rod mounting hole, and first nut is used for with the first end threaded connection of screw rod in order to fasten the screw rod on the mounting panel of lower floor's module support column, and the second nut is used for with the second end threaded connection of screw rod in order to fasten the screw rod on the mounting panel of upper module support column.

In a second aspect, the present utility model provides a modular building comprising an upper module, a lower module and a connection structure for a modular building as described above; the upper layer module and the lower layer module are of a frame structure formed by connecting pipe fittings, and comprise a plurality of vertically arranged tubular supporting columns and a plurality of transversely arranged tubular connecting columns, wherein the connecting columns are connected between the supporting columns, an upper mounting plate and an upper end plate which are sequentially arranged from bottom to top are arranged at the upper end of an inner cavity of each supporting column, and a lower mounting plate and a lower end plate which are sequentially arranged from top to bottom are arranged at the lower end of an inner cavity of each supporting column; in the connection structure, first shear key embedding lower floor module support column's upper end plate preformed hole is downthehole, second shear key embedding upper end plate preformed hole of upper module support column, the first end of head rod is installed in first mounting hole, first fastener is connected with the second end of head rod and is fastened the head rod on the upper mounting panel of lower floor module support column, the first end of second connecting rod is installed in the second mounting hole, the second fastener is connected with the second end of second connecting rod and is fastened the second connecting rod on the lower mounting panel of upper module support column.

Optionally, an upper operation hole communicating the inner cavity of the support column with the outside of the support column is formed in the upper end of the support column, and the upper operation hole is located below the upper mounting plate; the lower extreme of support column has offered the lower operation entrance to a cave that communicates support column inner chamber and support column external world, and lower operation entrance to a cave is located the top of lower mounting panel.

Optionally, an upper reinforcing steel plate is provided on the outer side wall of the support column around the upper operation hole, and a lower reinforcing steel plate is provided around the lower operation hole.

(III) beneficial effects

The beneficial effects of the utility model are as follows:

according to the connecting structure for the modularized building, after the shear keys on the connecting plates are connected with the upper-layer modules and the lower-layer modules, the connecting plates can be used for transmitting horizontal acting force among the modules and providing the function of resisting horizontal shearing force for the connecting nodes among the modules, and the shearing capacity is high; the connecting structure is fastened on the lower-layer module through the cooperation of the first connecting rod and the first fastening piece, and is fastened on the upper-layer module through the cooperation of the second connecting rod and the second fastening piece, so that the upper-layer module and the lower-layer module are effectively pulled, vertical tensile force between the modules is transmitted, and the function of resisting tensile force and bending moment is provided for the connecting node between the modules. In addition, the connecting structure for the modularized building is simple in structure, low in manufacturing cost, simple to operate and detachable.

Drawings

The utility model is described with the aid of the following figures:

fig. 1 is a schematic structural view of a connection plate according to embodiment 1 of the present utility model;

fig. 2 is a schematic structural view of a modular building according to embodiment 1 of the present utility model, in which a connection structure is shown;

fig. 3 is a schematic structural view of a modular building according to embodiment 2 of the present utility model, in which a connection structure is shown;

FIG. 4 is a schematic structural view of a modular building according to embodiment 4 of the present utility model, in which connection structures are shown;

fig. 5 is a schematic structural view of a modular building according to embodiment 4 of the present utility model, in which an entrance cover plate is shown.

[ reference numerals description ]

1: an upper module;

2: a lower module;

3: a support column;

31: an upper mounting plate; 32: an upper end plate; 33: a lower mounting plate; 34: a lower end plate; 35: an upper operating hole; 36: a lower operation hole; 37: reinforcing the steel plate; 38: an opening cover plate;

4: a connecting plate;

41: a first shear key; 42: a second shear key;

51: a first connecting rod; 52: a second connecting rod; 53: a pull rod; 54: a screw;

61: a first bolt; 62: a second bolt; 63: a first nut; 64: and a second nut.

Detailed Description

The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings.

Example 1

As shown in fig. 2, in the modular building, an upper layer module 1 and a lower layer module 2 are included, which are overlapped with each other, the upper layer module 1 and the lower layer module 2 are frame structures formed by connecting pipe fittings, each frame structure comprises a plurality of vertically arranged tubular support columns 3 and a plurality of transversely arranged tubular connection columns, the connection columns are connected between the support columns 3, an upper mounting plate 31 and an upper end plate 32 which are sequentially arranged from bottom to top are generally arranged at the upper ends of the inner cavities of the support columns 3, and a lower mounting plate 33 and a lower end plate 34 which are sequentially arranged from top to bottom are generally arranged at the lower ends of the inner cavities of the support columns 3.

Based on the above modular building, as shown in fig. 1 and 2, the present embodiment provides a connection structure for a modular building, including a connection plate 4, a first connection rod 51, a second connection rod 52, a first fastener and a second fastener; the lower face of connecting plate 4 is provided with at least one first shear key 41 that protrudes in the face down, and first shear key 41 is used for embedding in the preformed hole of the upper end plate 32 of lower floor's module 2 support column 3, and the upper face one-to-one first shear key 41 of connecting plate 4 is provided with the second shear key 42 that protrudes in the face of going up, and second shear key 42 is used for embedding in the preformed hole of the lower end plate 34 of upper strata module 1 support column 3, has seted up the first mounting hole that extends along the upper and lower direction on the first shear key 41, has seted up the second mounting hole that extends along the upper and lower direction on the second shear key 42. The first end of the first connecting rod 51 is used for being installed in the first installation hole, and the first fastener is used for being connected with the second end of the first connecting rod 51 so as to fasten the first connecting rod 51 on the upper installation plate 31 of the support column 3 of the lower layer module 2; the first end of the second connecting rod 52 is configured to be mounted in the second mounting hole, and the second fastener is configured to be connected to the second end of the second connecting rod 52 to fasten the second connecting rod 52 to the lower mounting plate 33 of the support column 3 of the upper module 1.

The connecting structure for the modularized building is characterized in that after the shear key on the connecting plate 4 is connected with the upper layer module 1 and the lower layer module 2, the connecting plate 4 can be used for transmitting horizontal acting force among the modules and providing the function of resisting horizontal shearing force for the connecting nodes among the modules, and the shearing capacity is strong; the connecting structure is fastened on the lower layer module 2 through the cooperation of the first connecting rod 51 and the first fastening piece, and is fastened on the upper layer module 1 through the cooperation of the second connecting rod 52 and the second fastening piece, so that the upper layer module 2 and the lower layer module 2 are effectively pulled and tied, vertical tensile force between the modules is transmitted, and the function of resisting tensile force and bending moment is provided for the connecting nodes between the modules. And the shear key can be designed according to the actual shear force, so that the connecting structure has better ductility and anti-seismic performance, and can be used for temporary modularized buildings and permanent multi-story and high-rise modularized buildings. In addition, the connecting structure for the modularized building is simple in structure, low in manufacturing cost and simple to operate.

Preferably, the number of the first shear keys 41 is the same as the number of the lower modules 2 in the horizontal direction at the connection node in the modular building, and the first shear keys 41 are disposed in one-to-one correspondence with the lower modules 2 in the horizontal direction at the connection node, and each first shear key 41 is used for being embedded in the corresponding lower module 2. Therefore, the connecting plate 4 can connect adjacent modules in the horizontal direction at the connecting node into a whole, and is beneficial to the transmission of horizontal force. Specifically, in the present embodiment, the number of lower modules 2 in the horizontal direction at the connection node in the modular building is two, so the number of the first shear keys 41 is two, and the first shear keys 41 are provided in one-to-one correspondence with the lower modules 2 in the horizontal direction at the connection node, and one first shear key 41 is used to be embedded in the lower module 2 corresponding thereto, as shown in fig. 2.

It should be noted that the number of lower modules 2 in the horizontal direction at the connection node in the modular building may be one or four.

Preferably, the first fastening piece is a first bolt 61, the second fastening piece is a second bolt 62, a first thread groove is formed at the second end of the first connecting rod 51, and a second thread groove is formed at the second end of the second connecting rod 52; the first end of the first connecting rod 51 is fixedly installed in the first installation hole, and the first bolt 61 is in threaded connection with the first thread groove to fasten the first connecting rod 51 on the installation plate of the support column 3 of the lower module 2; the first end of the second connecting rod 52 is fixedly mounted in the second mounting hole, and the second bolt 62 is in threaded connection with the second thread groove to fasten the second connecting rod 52 to the mounting plate of the support column 3 of the upper module 1. The connection structure that so set up is pure dry-type and connects, can dismantle for the secondary to modular unit can dismouting, transformation can change into other functional building.

Specifically, the first end of the first connecting rod 51 may be fixedly mounted in the first mounting hole by screwing or welding, and the first end of the second connecting rod 52 may be fixedly mounted in the second mounting hole by screwing or welding.

The embodiment also provides a modular building comprising an upper module 1, a lower module 2 and a connection structure for the modular building as described above; the upper module 1 and the lower module 2 are all of a frame structure formed by connecting pipe fittings, and comprise a plurality of vertically arranged tubular supporting columns 3 and a plurality of transversely arranged tubular connecting columns, wherein the connecting columns are connected between the supporting columns 3, an upper mounting plate 31 and an upper end plate 32 which are sequentially arranged from bottom to top are arranged at the upper end of an inner cavity of each supporting column 3, and a lower mounting plate 33 and a lower end plate 34 which are sequentially arranged from top to bottom are arranged at the lower end of an inner cavity of each supporting column 3. In the connection structure, the first shear key 41 is embedded into the reserved hole of the upper end plate 32 of the support column 3 of the lower module 2, the second shear key 42 is embedded into the reserved hole of the upper end plate 32 of the support column 3 of the upper module 1, the first end of the first connecting rod 51 is installed in the first installation hole, the first fastening piece is connected with the second end of the first connecting rod 51 to fasten the first connecting rod 51 on the upper installation plate 31 of the support column 3 of the lower module 2, the first end of the second connecting rod 52 is installed in the second installation hole, and the second fastening piece is connected with the second end of the second connecting rod 52 to fasten the second connecting rod 52 on the lower installation plate 33 of the support column 3 of the upper module 1.

Preferably, the upper end of the support column 3 is provided with an upper operation hole 35 which is communicated with the inner cavity of the support column 3 and the outside of the support column 3, and the upper operation hole 35 is positioned below the upper mounting plate 31; the lower end of the support column 3 is provided with a lower operation hole 36 which is communicated with the inner cavity of the support column 3 and the outside of the support column 3, and the lower operation hole 36 is positioned above the lower mounting plate 33. In this way, the installation of the first and second connection bars 51 and 52 is facilitated.

The mounting process of the modularized building provided by the embodiment is as follows:

1. a connection plate 4 is placed above the lower module 2 in the horizontal direction at the connection node, each first shear key 41 is embedded in the corresponding lower module 2, and the upper module 1 is dropped above the connection plate 4 corresponding to the lower module 2, so that each second shear key 42 is embedded in the corresponding upper module 1.

2. The first connecting rod 51 and the first fastener are installed through the lower operation hole 36, and the second connecting rod 52 and the second fastener are installed through the upper operation hole 35.

Example 2

The main difference between this embodiment and embodiment 1 is that:

as shown in fig. 3, the first mounting hole and the second mounting hole which are correspondingly arranged are communicated to form a pull rod mounting hole, the first connecting rod 51 and the second connecting rod 52 are connected into a whole to form a pull rod 53, a first thread groove is formed at the first end of the pull rod 53, a second thread groove is formed at the second end of the pull rod 53, the first fastening piece is a first bolt 61, and the second fastening piece is a second bolt 62; the pull rod 53 is used for penetrating and installing in the pull rod installing hole, the first bolt 61 is used for being in threaded connection with the first thread groove so as to fasten the pull rod 53 on the installing plate of the supporting column 3 of the lower layer module 2, and the second bolt 62 is used for being in threaded connection with the second thread groove so as to fasten the pull rod 53 on the installing plate of the supporting column 3 of the upper layer module 1. The connection structure that so set up is pure dry-type and connects, can dismantle for the secondary to modular unit can dismouting, transformation can change into other functional building.

The rest is the same as in embodiment 1 and will not be described here again.

Example 3

The main difference between this embodiment and embodiment 1 is that:

the first fastening piece is a first nut 63, the second fastening piece is a second nut 64, the first connecting rod 51 is a first screw rod, and the second connecting rod 52 is a second screw rod; the first end of the first screw rod is used for being fixedly installed in the first installation hole, and the first nut 63 is used for being in threaded connection with the second end of the first screw rod so as to fasten the first screw rod on the installation plate of the support column 3 of the lower layer module 2; the first end of the second screw is fixedly mounted in the second mounting hole, and the second nut 64 is in threaded connection with the second end of the second screw to fasten the second screw to the mounting plate of the support column 3 of the upper module 1. The connection structure that so set up is pure dry-type and connects, can dismantle for the secondary to modular unit can dismouting, transformation can change into other functional building.

The rest is the same as in embodiment 1 and will not be described here again.

Example 4

The main difference between this embodiment and embodiment 1 is that:

as shown in fig. 4, the first mounting hole and the second mounting hole correspondingly arranged are communicated to form a screw mounting hole, the first connecting rod 51 and the second connecting rod 52 are connected into a whole to form a screw 54, the first fastening piece is a first nut 63, and the second fastening piece is a second nut 64; the screw 54 is configured to be installed in the screw mounting hole in a penetrating manner, the first nut 63 is configured to be screwed with a first end of the screw 54 to fasten the screw 54 to the mounting plate of the support column 3 of the lower module 2, and the second nut 64 is configured to be screwed with a second end of the screw 54 to fasten the screw 54 to the mounting plate of the support column 3 of the upper module 1. The connection structure that so set up is pure dry-type and connects, can dismantle for the secondary to modular unit can dismouting, transformation can change into other functional building.

As shown in fig. 4, in the modular building, a reinforcing steel plate 37 is provided around the upper operation hole 35 on the outer side wall of the support column 3, and a reinforcing steel plate 37 is provided around the lower operation hole 36. The module support column 3 is locally reinforced, and the influence of the operation hole on the strength of the module support column 3 is reduced.

As shown in fig. 5, the modular building further comprises an opening cover 38 for closing the upper operating opening 35 and/or the lower operating opening 36. The sealing device is used for sealing the operation hole and has the functions of decoration, water resistance and corrosion resistance.

The installation process of the modular building provided in this embodiment further includes:

3. and the opening cover plate 38 is wrapped on the reinforced steel plates 37 of the upper operation opening 35 and the lower operation opening 36 respectively, and the joint is tied and fixed by sealant.

The rest is the same as in embodiment 1 and will not be described here again.

It should be understood that the above description of the specific embodiments of the present utility model is only for illustrating the technical route and features of the present utility model, and is for enabling those skilled in the art to understand the present utility model and implement it accordingly, but the present utility model is not limited to the above-described specific embodiments. All changes or modifications that come within the scope of the appended claims are intended to be embraced therein.

Claims (10)

1. A connection structure for modular construction, characterized in that,

comprises a connecting plate (4), a first connecting rod (51), a second connecting rod (52), a first fastener and a second fastener;

the lower plate surface of the connecting plate (4) is provided with at least one first shear key (41) protruding out of the lower plate surface and used for being embedded into the upper end plate (32) reserved hole of the support column (3) of the lower module (2), the first shear keys (41) of the upper plate surface of the connecting plate (4) are in one-to-one correspondence, the second shear keys (42) protruding out of the upper plate surface and used for being embedded into the lower end plate (34) reserved hole of the support column (3) of the upper module (1), the first shear keys (41) are provided with first mounting holes extending along the upper and lower directions, and the second shear keys (42) are provided with second mounting holes extending along the upper and lower directions;

the first end of the first connecting rod (51) is used for being installed in the first installation hole, and the first fastener is used for being connected with the second end of the first connecting rod (51) so as to fasten the first connecting rod (51) on the installation plate of the support column (3) of the lower module (2); the first end of the second connecting rod (52) is used for being installed in the second installation hole, and the second fastening piece is used for being connected with the second end of the second connecting rod (52) so as to fasten the second connecting rod (52) on the installation plate of the support column (3) of the upper module (1).

2. The connection structure for modular building according to claim 1, wherein,

the number of the first shear keys (41) is the same as the number of the lower layer modules (2) in the horizontal direction at the connecting node in the modularized building, the first shear keys (41) are arranged in one-to-one correspondence with the lower layer modules (2) in the horizontal direction at the connecting node, and each first shear key (41) is used for being embedded into the corresponding lower layer module (2).

3. The connection structure for modular building according to claim 2, wherein,

a first shear key (41) is arranged on the upper plate surface of the connecting plate (4); or, the upper plate surface of the connecting plate (4) is provided with two first shear keys (41); or, the upper plate surface of the connecting plate (4) is provided with four first shear keys (41).

4. The connection structure for modular building according to claim 1, wherein,

the first fastening piece is a first bolt (61), the second fastening piece is a second bolt (62), a first thread groove is formed in the second end of the first connecting rod (51), and a second thread groove is formed in the second end of the second connecting rod (52);

the first end of the first connecting rod (51) is fixedly arranged in the first mounting hole, and the first bolt (61) is in threaded connection with the first thread groove so as to fasten the first connecting rod (51) on the mounting plate of the support column (3) of the lower module (2); the first end of the second connecting rod (52) is used for being fixedly installed in the second installation hole, and the second bolt (62) is used for being in threaded connection with the second thread groove so as to fasten the second connecting rod (52) on the installation plate of the support column (3) of the upper layer module (1).

5. The connection structure for modular building according to claim 1, wherein,

the first mounting holes and the second mounting holes which are correspondingly arranged are communicated to form a pull rod mounting hole, the first connecting rod (51) and the second connecting rod (52) are connected into a pull rod (53) in an integrated mode, a first thread groove is formed in the first end of the pull rod (53), a second thread groove is formed in the second end of the pull rod (53), the first fastening piece is a first bolt (61), and the second fastening piece is a second bolt (62);

the pull rod (53) is used for penetrating and installing in the pull rod installing hole, the first bolt (61) is used for being in threaded connection with the first thread groove so as to fasten the pull rod (53) on the installing plate of the support column (3) of the lower layer module (2), and the second bolt (62) is used for being in threaded connection with the second thread groove so as to fasten the pull rod (53) on the installing plate of the support column (3) of the upper layer module (1).

6. The connection structure for modular building according to claim 1, wherein,

the first fastening piece is a first nut (63), the second fastening piece is a second nut (64), the first connecting rod (51) is a first screw rod, and the second connecting rod (52) is a second screw rod;

the first end of the first screw rod is fixedly arranged in the first mounting hole, and the first nut (63) is in threaded connection with the second end of the first screw rod so as to fasten the first screw rod on the mounting plate of the support column (3) of the lower module (2); the first end of the second screw rod is used for being fixedly installed in the second installation hole, and the second nut (64) is used for being in threaded connection with the second end of the second screw rod so as to fasten the second screw rod on the installation plate of the support column (3) of the upper layer module (1).

7. The connection structure for modular building according to claim 1, wherein,

the first mounting holes and the second mounting holes which are correspondingly arranged are communicated to form screw mounting holes, the first connecting rod (51) and the second connecting rod (52) are connected into a whole to form a screw (54), the first fastening piece is a first nut (63), and the second fastening piece is a second nut (64);

the screw rod (54) is used for penetrating and installing in the screw rod installing hole, the first nut (63) is used for being in threaded connection with the first end of the screw rod (54) so as to fasten the screw rod (54) on the installing plate of the supporting column (3) of the lower layer module (2), and the second nut (64) is used for being in threaded connection with the second end of the screw rod (54) so as to fasten the screw rod (54) on the installing plate of the supporting column (3) of the upper layer module (1).

8. A modular building, characterized in that,

comprising an upper module (1), a lower module (2) and a connection structure for modular construction according to any one of claims 1 to 7;

the upper layer module (1) and the lower layer module (2) are of a frame structure formed by connecting pipe fittings, each frame structure comprises a plurality of vertically arranged tubular supporting columns (3) and a plurality of transversely arranged tubular connecting columns, the connecting columns are connected between the supporting columns (3), an upper mounting plate (31) and an upper end plate (32) which are sequentially arranged from bottom to top are arranged at the upper ends of inner cavities of the supporting columns (3), and a lower mounting plate (33) and a lower end plate (34) which are sequentially arranged from top to bottom are arranged at the lower ends of inner cavities of the supporting columns (3);

in the connection structure, first shear key (41) imbeds in upper end plate (32) preformed hole of lower floor's module (2) support column (3), second shear key (42) imbeds in upper end plate (32) preformed hole of upper module (1) support column (3), first end of head rod (51) is installed in first mounting hole, first fastener is connected with the second end of head rod (51) and is fastened head rod (51) on upper mounting board (31) of lower floor's module (2) support column (3), first end of second connecting rod (52) is installed in the second mounting hole, second fastener is connected with the second end of second connecting rod (52) and is fastened second connecting rod (52) on lower mounting board (33) of upper module (1) support column (3).

9. The modular building of claim 8, wherein the modular building is configured to provide the modular building with the modular building,

an upper operation hole (35) which is communicated with the inner cavity of the support column (3) and the outside of the support column (3) is formed in the upper end of the support column (3), and the upper operation hole (35) is positioned below the upper mounting plate (31); the lower extreme of support column (3) has offered lower operation entrance to a cave (36) that communicates support column (3) inner chamber and support column (3) external world, and lower operation entrance to a cave (36) are located the top of lower mounting panel (33).

10. The modular building of claim 9, wherein the modular building is configured to provide the modular building with the modular building,

an upper reinforcing steel plate (37) is arranged on the outer side wall of the support column (3) around the upper operation hole (35), and a lower reinforcing steel plate (37) is arranged around the lower operation hole (36).