CN215594096U - Newly-added steel structure column foundation structure on existing structure - Google Patents
Newly-added steel structure column foundation structure on existing structure Download PDFInfo
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- CN215594096U CN215594096U CN202121478075.2U CN202121478075U CN215594096U CN 215594096 U CN215594096 U CN 215594096U CN 202121478075 U CN202121478075 U CN 202121478075U CN 215594096 U CN215594096 U CN 215594096U
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Abstract
The utility model discloses a newly-added steel structure column foundation structure on an existing structure, which comprises the following components: the bottom of the top plate of the original basement is cast with a main beam and a secondary beam which are arranged in a crossed manner, and a column is cast below the crossed point of the main beam and the secondary beam; the post-pouring independent pier is poured on the top plate of the original basement, is arranged at the intersection of the main beam, the secondary beam and the column, and is embedded with a pre-buried foundation screw rod; and the back-jacking steel beam comprises a steel beam body and end plates, wherein the upper part of the steel beam body is provided with a pressure-bearing flange attached to the top plate of the original basement, the end parts of the two ends of the steel beam body are respectively connected with the end plates, the end plates are connected to two adjacent main beams through anchor bolts, a stiffening rib plate is connected between the steel beam body and the pressure-bearing flange, a pressurizing wedge block is embedded in a gap between the pressure-bearing flange and the top plate of the original basement, and epoxy grout is poured in the gap. The utility model solves the problem that the original structure is easy to damage due to improper component dismantling construction in the existing foundation construction method for the newly-added steel structure column.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a newly-added steel structure column foundation structure on an existing structure.
Background
Under the condition that the original structure of the project is finished, a series of steel structure columns are required to be additionally arranged on the top plate of the basement due to the additional arrangement of steel structure modeling members. The existing foundation construction of the newly-added steel structure column is improper in component dismantling construction, so that the original structure is easily damaged or the bearing requirement of the newly-added steel structure modeling component on the upper part cannot be met after the construction is finished.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, a newly-added steel structure column foundation structure on the existing structure is provided so as to solve the problem that the original structure is easily damaged due to improper member dismantling construction in the existing foundation construction method of the newly-added steel structure column.
In order to achieve the above object, there is provided a newly-added steel structural column foundation structure on an existing structure, including:
the basement structure comprises an original basement top plate, a main beam and a secondary beam which are arranged in a crossed mode are poured at the bottom of the original basement top plate, and a column is poured below the crossed point of the main beam and the secondary beam;
the post-pouring independent pier is poured on the top plate of the original basement and is arranged at the intersection of the main beam, the secondary beam and the columns, and pre-buried foundation screws for connecting newly-increased steel structure columns are buried in the post-pouring independent pier; and
the back-jacking steel beam comprises a steel beam body and end plates, wherein a pressure-bearing flange is formed on the upper portion of the steel beam body and is attached to the top plate of the original basement, the end portions of the two ends of the steel beam body are respectively connected with the end plates, the end plates are connected to the two adjacent main beams through anchors, stiffening rib plates are connected between the side faces of the steel beam body and the bottoms of the pressure-bearing flanges, pressurizing wedge blocks are embedded in gaps between the pressure-bearing flanges and the top plate of the original basement, and epoxy slurry is poured into the gaps.
Furthermore, the opposite sides of the main beam are respectively provided with the back-jacking steel beams.
Furthermore, the steel beam of back-pushing is the I-shaped steel beam.
Further, the post-cast independent abutment comprises:
the base plate is poured on the top plate of the original basement; and
the pressure relief platform is in a frustum pyramid shape, and the lower bottom surface of the pressure relief platform is connected to the upper surface of the substrate.
The newly-added steel structure column foundation structure on the existing structure has the advantages that the newly-added steel structure column foundation structure is characterized in that the newly-added steel structure column is installed by pouring the post-cast independent abutment on the top plate of the original basement of the existing structure, and the top plate of the original basement is supported at the bottom of the top plate of the original basement through the back-jacking steel beam, so that the post-cast independent abutment has higher bearing capacity to install the newly-added steel structure column; on the other hand, the existing structure is prevented from being broken, the integrity of the original structure is ensured, and the safety of the newly-added steel structure column is also improved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a newly-added steel structural column foundation structure on an existing structure according to an embodiment of the present invention.
Fig. 2 is a top view of a newly added steel structural column infrastructure over an existing structure in accordance with an embodiment of the present invention.
Fig. 3 is a schematic structural view of a back-jacking steel beam according to an embodiment of the utility model.
Fig. 4 is a cross-sectional view of a roof return steel beam according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 4, fig. 2 is a perspective view of a newly added steel-structure column foundation structure on an existing structure in a top view, according to an embodiment of the present invention, and the present invention provides a newly added steel-structure column foundation structure on an existing structure, including: the basement comprises an original basement top plate 1, a post-cast independent pier 4 and a back-up steel beam.
Wherein, the bottom of the top plate 1 of the original basement is poured with a main beam 21 and a secondary beam 22 which are arranged in a crossed manner. In this embodiment, the number of the main beams and the secondary beams is multiple and concrete pouring, and the multiple secondary beams are connected between two adjacent main beams. The columns 3 are cast below the intersection of the primary beams 21 and the secondary beams 22.
The post-pouring independent abutment 4 is poured on the original basement top plate 1, and the post-pouring independent abutment 4 is arranged at the intersection of the main beam 21, the secondary beam 22 and the column 3. The rear pouring independent abutment 4 is embedded with an embedded foundation screw 71. The embedded foundation screw 71 is used for connecting the newly-added steel structural column 7.
The back-jacking steel beam is arranged between two adjacent main beams. The upper portion of the back-jacking steel beam is attached to the original basement top plate 1. The back-jacking steel beam is connected between the two adjacent main beams 21 and props at the bottom of the top plate 1 of the original basement. Specifically, the gap between the upper part of the back-jacking steel beam and the top plate 1 of the original basement.
Wherein, the roof steel beam that backs includes: a steel beam body 51 and an end plate 52.
Specifically, referring to fig. 3 and 4, the upper portion of the steel beam body 51 is formed with a bearing flange 511. The two opposite sides of the upper part of the steel beam body extend to form pressure-bearing flanges respectively. The pressure-bearing flange 511 is attached to the original basement roof 1. A gap is formed between the pressure-bearing flange and the original basement top plate.
The end plate 52 is connected to an end of the steel beam body 51. The two ends of the steel beam body are respectively connected with an end plate. The end plate is arranged along the width direction of the steel beam body. The end plates 52 are attached to the sides of the main beams 21 by anchor bolts 521. The end plate is fixed on the side surface of the main beam through the anchor bolt, and the anchor bolt is implanted into the side surface of the main beam.
In this embodiment, the anchor is a hot-dip galvanized inverted cone-shaped high-strength chemical anchor. The end of the steel beam body is connected to the middle of the end plate. The quantity of crab-bolt is eight, and eight crab-bolts divide two rows, set up respectively in the relative both sides of end plate, and each side of end plate is provided with one row of crab-bolt, four crab-bolts promptly. The tensile bearing capacity of a single anchor bolt is greater than or equal to 45kN, and the shear-resistant bearing beam is greater than or equal to 45 kN.
A stiffening rib plate 512 is connected between the side surface of the steel beam body 51 and the bottom of the pressure-bearing flange 511. And a pressurizing wedge block is embedded in a gap between the top of the pressure-bearing flange 511 and the top plate 1 of the original basement. And after the gap is cured by the pressurizing wedge block and the epoxy grout, the upper part of the back-jacking steel beam is supported at the bottom of the top plate 1 of the original basement. Specifically, the pressure wedge is disposed above the stiffener plate 512. The gap is filled with epoxy slurry. The epoxy grout forms the bed course after the solidification, ensures that the bearing flange of girder steel body props up in former basement roof.
In this embodiment, the roof-return steel beam is an i-shaped steel beam. The steel beam body and the pressure-bearing flange are integrally formed, and the lower part of the steel beam body extends to form a flange plate.
In a preferred embodiment, as shown in fig. 2, the main beam 21 is provided with a back-up steel beam on opposite sides thereof. Four corners of each post-cast independent pier are respectively provided with a plurality of back-jacking steel beams.
In the present embodiment, the post-cast independent abutment 4 includes: a substrate 42 and a pressure relief table 41.
The base plate 42 is poured on the top plate 1 of the original basement. The pressure relief table 41 is in the shape of a frustum of a pyramid. The lower bottom surface of the pressure relief stage 41 is attached to the upper surface of the base plate 42.
According to the newly-added steel structure column foundation structure on the existing structure, the newly-added steel structure column is installed by pouring the post-cast independent abutment on the top plate of the original basement of the existing structure, and the top plate of the original basement is supported at the bottom of the top plate of the original basement through the back-jacking steel beam, so that the post-cast independent abutment has higher bearing capacity to install the newly-added steel structure column; on the other hand, the existing structure is prevented from being broken, the integrity of the original structure is ensured, and the safety of the newly-added steel structure column is also improved.
According to the newly-added steel structure column foundation structure on the existing structure, aiming at the condition that a steel column foundation needs to be added on a top plate of a basement, an independent foundation is added, and meanwhile, a back-jacking steel beam is added at the bottom of the top plate below the independent foundation, so that the bearing capacity is improved; through adopting the independent pier of post-cast as the basis of newly-increased steel structure post can avoid at basement roof bar planting, satisfied the resistance to plucking designing requirement of the basis of newly-increased steel structure post again simultaneously, increase the mode of back-heading girder steel in the bottom of roof, compare and increase the concrete secondary beam, destroy fewly to the structure roof, and it is more convenient to construct.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (4)
1. The utility model provides a newly-increased steel structure column infrastructure on existing structure which characterized in that includes:
the basement structure comprises an original basement top plate, a main beam and a secondary beam which are arranged in a crossed mode are poured at the bottom of the original basement top plate, and a column is poured below the crossed point of the main beam and the secondary beam;
the post-pouring independent pier is poured on the top plate of the original basement and is arranged at the intersection of the main beam, the secondary beam and the columns, and pre-buried foundation screws for connecting newly-added steel structure columns are buried in the post-pouring independent pier; and
the back-jacking steel beam comprises a steel beam body and end plates, wherein a pressure-bearing flange is formed on the upper portion of the steel beam body and is attached to the top plate of the original basement, the end portions of the two ends of the steel beam body are respectively connected with the end plates, the end plates are connected to the two adjacent main beams through anchors, stiffening rib plates are connected between the side faces of the steel beam body and the bottoms of the pressure-bearing flanges, pressurizing wedge blocks are embedded in gaps between the pressure-bearing flanges and the top plate of the original basement, and epoxy slurry is poured into the gaps.
2. The newly-added steel structural column foundation construction on an existing structure of claim 1, wherein said back-topped steel beams are respectively mounted on opposite sides of said main beam.
3. The newly-added steel structural column foundation construction on an existing structure of claim 1, wherein the back-jacking steel beam is an i-shaped steel beam.
4. The newly-added steel structural column infrastructure on an existing structure according to claim 1, wherein said post-cast independent abutments comprise:
the base plate is poured on the top plate of the original basement; and
the pressure relief platform is in a frustum pyramid shape, and the lower bottom surface of the pressure relief platform is connected to the upper surface of the substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121478075.2U CN215594096U (en) | 2021-06-30 | 2021-06-30 | Newly-added steel structure column foundation structure on existing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121478075.2U CN215594096U (en) | 2021-06-30 | 2021-06-30 | Newly-added steel structure column foundation structure on existing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215594096U true CN215594096U (en) | 2022-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121478075.2U Active CN215594096U (en) | 2021-06-30 | 2021-06-30 | Newly-added steel structure column foundation structure on existing structure |
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| Country | Link |
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| CN (1) | CN215594096U (en) |
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2021
- 2021-06-30 CN CN202121478075.2U patent/CN215594096U/en active Active
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