CN109723141B - Supporting structure at assembled structure conversion layer and construction method thereof - Google Patents
Supporting structure at assembled structure conversion layer and construction method thereof Download PDFInfo
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- CN109723141B CN109723141B CN201910169223.3A CN201910169223A CN109723141B CN 109723141 B CN109723141 B CN 109723141B CN 201910169223 A CN201910169223 A CN 201910169223A CN 109723141 B CN109723141 B CN 109723141B
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 title claims description 17
- 238000011065 in-situ storage Methods 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000000945 filler Substances 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000009413 insulation Methods 0.000 claims abstract description 14
- 238000004873 anchoring Methods 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims description 15
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 239000004567 concrete Substances 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 10
- 238000005034 decoration Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000002788 crimping Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 abstract description 7
- 238000003825 pressing Methods 0.000 abstract description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 2
- 238000009435 building construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/90—Passive houses; Double facade technology
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- Building Environments (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The support structure comprises an overhanging platform connected at the junction of a cast-in-situ wall body and a cast-in-situ plate, a step-type platform connected at the edge of the overhanging platform, and a slurry-sitting layer connected between the overhanging platform and an upper prefabricated wallboard; the horizontal steel bars and the anchoring ribs are arranged inside the overhanging platform and the step-type platform, the outer page plate is arranged on the upper portion of the step-type platform, the filler and the building glue are pressed and connected to the bottom end of the outer page plate and the top of the step-type platform in a pressing mode, the heat-insulating plate is clamped between the prefabricated wall plate and the outer page plate, and the sealing strip is connected between the bottom end of the heat-insulating plate and the overhanging platform. Through the arrangement of the overhanging platform and the step platform, the upper structure is effectively supported, the processing space required by sealing is provided, and the bearing capacity is enhanced through the horizontal steel bars and the anchoring bars; the variable cross section design of the lower part of the outer page plate is convenient for maintaining and replacing the sealing strip at the bottom of the heat insulation plate, and the construction method is easy to operate, and can effectively save the construction period and improve the engineering quality.
Description
Technical Field
The invention belongs to the field of construction of assembled building structures, and particularly relates to a support structure at a conversion layer of an assembled structure and a construction method thereof.
Background
In the present building construction, the application of an assembled concrete structure is more and more extensive, the connection among components in the assembled concrete structure is always a core problem, especially when the bottom of a prefabricated wallboard of a conversion layer is in place and then is in grouting connection, in order to ensure that the reinforced concrete prefabricated wallboard is in tight grouting connection with a horizontal seam of the bottom structure, a rubber cotton sliver is generally adopted for sealing the horizontal seam of the outer side seam of the prefabricated external wallboard, but the sealing is often difficult to ensure the tightness of sealing because the rubber cotton sliver needs to be provided with the sealing thickness and the sealing width along the longitudinal length of the prefabricated wallboard, and if the sealing is not tight, the connection between the reinforced concrete prefabricated wallboard and the bottom cast-in-place structure is unreliable, and the quality defect occurs; and often be provided with heated board and outer page or leaf board simultaneously in its outside when constructing prefabricated wallboard, support and sealing treatment to heated board and outer page or leaf board to and both link up with the sealed waterproof treatment of bottom all need the pertinence design, otherwise influence building construction progress or cause after the rainwater invades will harm construction quality. Accordingly, there is a need to provide a support structure at a fabricated structural conversion layer and a method of constructing the same.
Disclosure of Invention
The invention provides a support structure at an assembled structure conversion layer and a construction method thereof, which are used for solving the problems of support of a prefabricated wallboard at the assembled structure conversion layer, plugging treatment of grouting material, bearing and waterproof sealing treatment of an outer page plate and the like, and the concrete technical scheme is as follows:
A support structure at an assembled structure conversion layer comprises an overhanging platform connected at the joint of a cast-in-situ wall body and a cast-in-situ plate, a step-type platform connected at the edge of the overhanging platform, and a slurry-sitting layer connected between the overhanging platform and an upper prefabricated wall plate.
The bottom surface of the step type platform and the bottom surface of the overhanging platform are in the same horizontal plane, and the top surface of the step type platform is lower than the top surface of the overhanging platform.
The overhanging platform and the step platform are integrally poured, horizontal steel bars are arranged in the overhanging platform and the step platform at intervals, the horizontal steel bars are distributed on the vertical sections of the overhanging platform and the step platform, and the horizontal steel bars are distributed on the cross sections of the overhanging platform and the step platform in a through length mode.
The outer side of the horizontal steel bar is provided with an anchoring rib which is arranged on the vertical section of the overhanging platform and the stepped platform in a through length way and extends into the cast-in-situ slab and the cast-in-situ wall body.
The upper part of the step type platform is provided with an outer page plate, one side of the longitudinal section of the outer page plate and the edge line of the outer side of the overhanging platform are arranged on the same vertical plane, and the other side of the longitudinal section of the outer page plate does not exceed the vertical plane where the edge line of the step type platform is arranged.
The bottom end of the outer page plate is in pressure connection with the top of the step-type platform, the elevation of the bottom end of the outer page plate is lower than that of the top surface of the overhanging platform, and the building glue is coated on the outer side of the filling level.
The transverse width of the bottom end of the outer page plate is smaller than that of the outer page plate at the elevation of the bottom surface of the prefabricated wall plate, and the two parts are obliquely connected and form a hollow bin with the edge of the overhanging platform and the top surface of the step-type platform.
The filler and the building glue are arranged side by side and are arranged in the longitudinal direction of the step-type platform, wherein the filler is positioned on the inner side of the outer page plate, the inner side surface of the filler is not more than the inner side surface of the outer page plate, and the building glue is positioned on the outer side of the outer page plate, and the outer side surface of the building glue is not more than the outer side surface of the outer page plate.
The prefabricated wallboard and the outer page plate are clamped with an insulation board, a sealing strip is connected between the bottom end of the insulation board and the overhanging platform, and the thickness of the sealing strip is the same as that of the slurry sitting layer.
The construction method of the support structure at the assembled structure conversion layer comprises the following specific steps:
Firstly, testing a cast-in-situ wall body, a cast-in-situ plate, an overhanging platform and a step platform according to a design drawing, binding horizontal steel bars and anchoring bars in the overhanging platform and the step platform, then erecting a template and performing integral casting, wherein the transverse width of the step platform is determined jointly according to the thickness of an outer page plate and other design decoration panels arranged on the outer side of a later outer page plate;
Maintaining the cast-in-place concrete, measuring the top surfaces of the outward extending platform and the step type platform, finishing and flattening the flatness of the top surfaces of the outward extending platform and the step type platform, and removing the template when the flatness and the strength of the concrete meet the design requirements;
Step three, installing a prefabricated wallboard above the overhanging platform, arranging a slurry-sitting layer between the prefabricated wallboard and the overhanging platform, installing a sealing strip outside the slurry-sitting layer, and installing an outer heat-insulating plate and an outer page plate of the prefabricated wallboard, wherein the outer side edges of the heat-insulating plate and the outer side surfaces of the sealing strip are positioned on the same vertical plane with the outer side surfaces of the overhanging platform;
And fourthly, pressing and connecting the filler at the bottom end of the outer page plate, and coating building glue on the outer side of the filler, thereby completing the construction of the support structure.
The invention has the following beneficial effects:
The invention supports the upper prefabricated wallboard, the heat-insulating board and the outer page board through the arrangement of the overhanging platform and the step-type platform, and the step-type platform can be designed in advance according to the outer side decoration, and the step-type platform is not required to be cut off during the later outer eave decoration construction, and is made into the form of decoration line feet, so that the invention is beautiful and elegant; the overhanging type platform, the step type platform, the cast-in-situ slab and the cast-in-situ wall body are integrally poured, so that the integrity of a building structure conversion part is ensured, and the bearing capacity of the overhanging type platform and the step type platform is enhanced through horizontal steel bars and anchoring bars; the sealing strip with the through length is arranged below the heat insulation plate, so that the slurry layer can be effectively plugged, and the overhanging platform provides enough space for the sealing strip; the variable cross-section design at the lower part of the outer page plate can form a hollow bin, so that the outer page plate is convenient to install, and the filler and the building adhesive at the lower part of the outer page plate can provide better guarantee for the invasion of rainwater and the tightness; during construction, the overhanging platform and the step type platform are simultaneously and simultaneously tested and supported with the cast-in-situ plate and the cast-in-situ wall body for construction and integrally casting, so that the working hours can be effectively saved, the construction quality of the structure can be guaranteed, and when the upper prefabricated wall body, the heat insulation plate and the outer page plate are constructed, the prefabricated wall body and the heat insulation plate can be constructed in a subsection mode or in a combined mode in advance, the problem of blocking the outer side of the slurry layer is guaranteed, and the requirements of supporting and sealing treatment are met. The components used by the supporting structure are provided for a construction site at low cost, and the construction method is easy to operate and implement, so that the problems of supporting and sealing treatment of the conversion layer can be effectively solved, the construction period can be saved, and the engineering quality can be improved.
Drawings
FIG. 1 is a schematic diagram of a support structure connection;
FIG. 2 is a schematic perspective view of a support structure;
fig. 3 is a vertical cross-section of the support structure.
Reference numerals: 1-horizontal steel bars; 2-anchoring ribs; 3-overhanging platforms; 4, sealing strips; 5-filling; 6-a step platform; 7-building glue; 8-cast-in-situ wall; 9-cast-in-situ plate; 10-sitting layer; 11-prefabricating wallboard; 12-an insulation board; 13-outer leaf plate.
Detailed Description
As shown in fig. 1 to 3, a support structure at a conversion layer of an assembled structure comprises an overhanging platform 3 connected at the junction of a cast-in-situ wall body 8 and a cast-in-situ slab 9, a step platform 6 connected at the edge of the overhanging platform 3, and a slurry layer 10 connected between the overhanging platform 3 and an upper prefabricated wall panel 11; the cast-in-situ wall body 8, the cast-in-situ plate 9 and the cast-in-situ wall body 8 are all cast in situ by adopting concrete, the grouting filler is adopted by the grout layer 10, the casting is completed in site construction, and the required concrete mark and the required seasoning ratio are determined according to the stress and the design requirement.
In this embodiment, the bottom surface of the step platform 6 and the bottom surface of the overhanging platform 3 are in the same horizontal plane, the top surface of the step platform 6 is lower than the top surface of the overhanging platform 3, wherein the overhanging platform 3 extends out of the outer side edge of the cast-in-situ wall 8 by 85mm, the height difference between the overhanging platform 3 and the step platform 6 is 35mm, and the thickness of the step platform 6 extends out of the edge of the overhanging platform 3 by 80mm and is 95mm; the overhanging platform 3 and the step platform 6 are integrally poured, horizontal steel bars 1 are arranged in the overhanging platform 3 and the step platform 6 at intervals, the horizontal steel bars 1 are distributed on the vertical sections of the overhanging platform 3 and the step platform 6, two horizontal steel bars are arranged on the middle upper part of the vertical sections of the overhanging platform 3 and the step platform 6, and the horizontal steel bars are distributed on the transverse sections of the overhanging platform 3 and the step platform 6 in a through length mode.
In the embodiment, the outer side of the horizontal steel bar 1 is provided with an anchor bar 1, the anchor bar 1 is arranged on the vertical section of the overhanging platform 3 and the step-type platform 6 in a through length way and extends into the cast-in-situ slab 9 and the cast-in-situ wall 8, and the joint of the cast-in-situ slab 9 and the cast-in-situ wall 8 is subjected to right-angle bending treatment; the anchor bars 1 are arranged at intervals on the cross sections of the overhanging platform 3 and the step-shaped platform 6.
In this embodiment, an outer page 13 is disposed on the upper portion of the step-type platform 6, one side of a longitudinal section of the outer page 13 is in the same vertical plane with an edge line on the outer side of the overhanging platform 3, and the other side of the longitudinal section does not exceed the vertical plane where the edge line of the step-type platform 6 is located; the elevation of the bottom end of the outer page 13 is lower than the elevation of the top surface of the overhanging platform 3; the transverse width at the bottom end of the outer page 13 is smaller than that of the step platform 6.
The bottom end of the outer page 13 is in pressure connection with the top of the step-type platform 6, and is provided with a filler 5 and a building adhesive 7, wherein the filler 5 is a foamed polystyrene rod, the building adhesive 7 is a building weather-proof adhesive, and the building adhesive 7 is coated on the outer side of the filler 5 horizontally; the filler 5 and the building adhesive 7 are arranged side by side and are arranged in the long direction of the step type platform 6, wherein the filler 5 is positioned on the inner side of the outer page 13, the inner side surface of the filler 5 is not more than the inner side surface of the outer page 13, the building adhesive 7 is positioned on the outer side of the outer page 13, and the outer side surface of the building adhesive 7 is not more than the outer side surface of the outer page 13.
In this embodiment, the heated board 12 is pressed from both sides between prefabricated wallboard 11 and outer page board 13, wherein the heated board 12 can be constructed with prefabricated wall 11 jointly or also can be constructed alone, be connected with sealing strip 4 between heated board 12 bottom and overhanging platform 3, sealing strip 4 is the rubber silver, adopts the rubber silver of two same specifications to stack from top to bottom and places, and single rubber silver width is 80mm with the heated board 12 thickness in prefabricated wallboard 11 outside, and the thickness of rubber silver is 20mm.
Referring to fig. 1 and 3, a construction method of a support structure at a conversion layer of an assembled structure is further described, which specifically includes the following steps:
firstly, testing a cast-in-situ wall body 8, a cast-in-situ plate 9, an overhanging platform 3 and a step-type platform 6 according to a design drawing, carrying out key rechecking on the joint and the corner of each component, binding horizontal steel bars 1 and anchoring bars 1 in the overhanging platform 3 and the step-type platform 6, determining the distance and the length of the anchoring bars 1 according to design bearing requirements, then supporting a template and carrying out integral casting, wherein the transverse width of the step-type platform 6 is determined jointly according to the thickness of an outer page 13 and other design decoration panels arranged on the outer side of the outer page 13 at the later stage;
Maintaining the cast-in-place concrete, measuring the top surfaces of the outward extending platform 3 and the step type platform 6, finishing and leveling the flatness of the top surfaces, removing the template when the flatness and the concrete strength meet the design requirements, and leveling the burrs and bulges on the top surfaces and the bottom surfaces of the outward extending platform 3 and the step type platform 6;
Step three, installing a prefabricated wallboard 11 above the overhanging platform 3, arranging a slurry sitting layer 10 between the prefabricated wallboard 11 and the overhanging platform 3, installing a sealing strip 4 outside the slurry sitting layer 10, and installing a heat insulation board 12 and an outer page 13 outside the prefabricated wallboard 11, wherein the outer side edges of the heat insulation board 12 and the outer side surfaces of the sealing strip 4 are positioned on the same vertical plane with the outer side surfaces of the overhanging platform 3;
And fourthly, crimping the filler 5 at the bottom end of the outer page 13, and coating the building adhesive 7 on the outer side of the filler 5, thereby completing the construction of the support structure.
It is to be understood that the above examples are presented solely for the purpose of clearly illustrating the salient features of the present invention and are not intended to limit the scope of the present invention; other variations and modifications of the present invention will be apparent to those of skill in the art, and it is intended to cover all such modifications and variations of this invention without departing from the scope of the invention as defined by the appended claims.
Claims (4)
1. An assembled structural conversion layer department bearing structure, its characterized in that: comprises an overhanging platform (3) connected at the joint of a cast-in-situ wall body (8) and a cast-in-situ plate (9), a step-shaped platform (6) connected at the edge of the overhanging platform (3), and a slurry sitting layer (10) connected between the overhanging platform (3) and an upper prefabricated wallboard (11);
the bottom surface of the step type platform (6) and the bottom surface of the overhanging platform (3) are in the same horizontal plane, and the top surface of the step type platform (6) is lower than the top surface of the overhanging platform (3);
The overhanging platform (3) and the step-type platform (6) are integrally poured, horizontal steel bars (1) are arranged in the overhanging platform (3) and the step-type platform (6) at intervals, the horizontal steel bars (1) are distributed on the vertical sections of the overhanging platform (3) and the step-type platform (6), and the horizontal steel bars are distributed on the cross sections of the overhanging platform (3) and the step-type platform (6) in a through length mode;
The outer side of the horizontal steel bar (1) is provided with an anchor bar which is arranged on the vertical section of the overhanging platform (3) and the stepped platform (6) in a through length way and extends into the cast-in-situ slab (9) and the cast-in-situ wall body (8);
An outer page plate (13) is arranged at the upper part of the step type platform (6), one side of the longitudinal section of the outer page plate (13) and the outer side edge line of the overhanging platform (3) are in the same vertical plane, and the other side of the longitudinal section of the outer page plate does not exceed the vertical plane where the edge line of the step type platform (6) is;
The bottom end of the outer page plate (13) is in pressure connection with the top of the step-type platform (6) and is provided with a filler (5) and a building adhesive (7), the elevation of the bottom end of the outer page plate (13) is lower than that of the top surface of the overhanging platform (3), and the filler (5) is coated with the building adhesive (7) horizontally outwards;
The transverse width of the bottom end of the outer page plate (13) is smaller than that of the outer page plate (13) at the elevation of the bottom surface of the prefabricated wall plate (11), and the two parts are obliquely connected and form a hollow bin with the edge of the overhanging platform (3) and the top surface of the step-type platform (6);
the prefabricated wallboard (11) and the outer page plate (13) are clamped with an insulation board (12), a sealing strip (4) is connected between the bottom end of the insulation board (12) and the overhanging platform (3), and the outer side edge of the insulation board (12) and the outer side face of the sealing strip (4) are positioned on the same vertical plane with the outer side face of the overhanging platform (3).
2. A fabricated structural conversion layer support structure according to claim 1, wherein: the filler (5) and the building adhesive (7) are arranged side by side and are arranged in a longitudinal through length mode on the step type platform (6), wherein the filler (5) is positioned on the inner side of the outer page (13) and the inner side surface of the filler (5) is not more than the inner side surface of the outer page (13), the building adhesive (7) is positioned on the outer side of the outer page (13) and the outer side surface of the building adhesive (7) is not more than the outer side surface of the outer page (13).
3. A fabricated structural conversion layer support structure according to claim 2, wherein: the thickness of the sealing strip (4) is the same as that of the slurry layer (10).
4. A method of constructing a support structure at a conversion layer of an assembled structure according to claim 3, comprising the specific steps of:
firstly, testing a cast-in-situ wall body (8), a cast-in-situ plate (9), an overhanging platform (3) and a step-shaped platform (6) according to a design drawing, binding horizontal steel bars (1) and anchoring bars in the overhanging platform (3) and the step-shaped platform (6), then supporting a template and integrally casting, wherein the transverse width of the step-shaped platform (6) is determined together according to the thickness of an outer page plate (13) and other design decoration panels arranged on the outer side of a later outer page plate (13);
maintaining the cast-in-place concrete, measuring the top surfaces of the external extending platform (3) and the step type platform (6), finishing and flattening the flatness of the top surfaces of the external extending platform and the step type platform, and removing the template when the flatness and the strength of the concrete meet the design requirements;
Step three, installing a prefabricated wallboard (11) above the overhanging platform (3), arranging a slurry sitting layer (10) between the prefabricated wallboard (11) and the overhanging platform (3), installing a sealing strip (4) at the outer side of the slurry sitting layer (10), and installing a heat insulation board (12) and an outer page board (13) at the outer side of the prefabricated wallboard (11), wherein the outer side edge of the heat insulation board (12) and the outer side face of the sealing strip (4) are positioned on the same vertical plane with the outer side face of the overhanging platform (3);
And fourthly, crimping the filler (5) at the bottom end of the outer page plate (13), and coating the building adhesive (7) on the outer side of the filler (5), thereby completing the construction of the support structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910169223.3A CN109723141B (en) | 2019-03-06 | 2019-03-06 | Supporting structure at assembled structure conversion layer and construction method thereof |
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| CN201910169223.3A CN109723141B (en) | 2019-03-06 | 2019-03-06 | Supporting structure at assembled structure conversion layer and construction method thereof |
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| CN109723141A CN109723141A (en) | 2019-05-07 |
| CN109723141B true CN109723141B (en) | 2024-06-25 |
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| CN112144693A (en) * | 2019-06-28 | 2020-12-29 | 成都建工第二建筑工程有限公司 | Method for installing prefabricated non-bearing wall |
| CN110331788A (en) * | 2019-06-29 | 2019-10-15 | 河南强耐新材股份有限公司 | A kind of assembled combined wall board bottom water flush joint connection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN209891374U (en) * | 2019-03-06 | 2020-01-03 | 北京建工四建工程建设有限公司 | Supporting structure at assembled structure conversion layer |
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| CN203755495U (en) * | 2014-02-28 | 2014-08-06 | 天津住宅集团建设工程总承包有限公司 | Mounting construction structure at prefabricated wall plate horizontal seam connecting portion |
| KR20160035834A (en) * | 2014-09-24 | 2016-04-01 | 삼성물산 주식회사 | Method and structure for preventing water leakage of floor joint in building |
| CN106703250B (en) * | 2016-12-03 | 2019-02-05 | 青岛科瑞新型环保材料集团有限公司 | A kind of Assembled self-insulating wall and its just manual labour skill |
| CN107575033A (en) * | 2017-09-09 | 2018-01-12 | 中国二十二冶集团有限公司 | Assembling type steel structure prefabricated outer wall panel is prefabricated and construction method |
| CN108756021A (en) * | 2018-06-27 | 2018-11-06 | 安徽宝业建工集团有限公司 | Envelope storehouse method for assembled architecture conversion layer sleeve grouting exterior wall |
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| CN209891374U (en) * | 2019-03-06 | 2020-01-03 | 北京建工四建工程建设有限公司 | Supporting structure at assembled structure conversion layer |
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