CN109723167B - Assembled steel pipe concrete edge constraint superimposed shear wall combination - Google Patents
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- 239000004567 concrete Substances 0.000 title claims abstract description 77
- 239000011178 precast concrete Substances 0.000 claims abstract description 31
- 238000010276 construction Methods 0.000 claims abstract description 19
- 238000003466 welding Methods 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims description 10
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- 238000005336 cracking Methods 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of building structures in civil engineering, and particularly relates to a preassembled steel tube concrete edge constraint superimposed shear wall combination. In the previous research process of the inventor, a steel pipe concrete edge constraint overlapping integral shear wall is provided, rectangular steel pipes are adopted as edge constraint components of precast concrete panels, so that wet workload and formwork support work in construction are effectively reduced, and L-shaped, T-shaped and ten-shaped connection of two walls is realized. In the prior art, the steel pipe components are connected by adopting bolt connection, and the connecting method needs to prefabricate an internal threaded hole, a positioning hole or a nut groove on the steel pipe, so that the requirement on operation precision is high, and the construction time is prolonged. The steel pipe edge constraint component is connected in a welding mode, the preassembled mode of the overlapped integral shear wall is provided by combining the overhanging steel web, the steel pipe edge constraint component can be directly applied to a construction site, the using amount of a template is reduced, the wall body connection strength is effectively improved, and the connection reliability is improved.
Description
Technical Field
The invention belongs to the technical field of building structures in civil engineering, and particularly relates to a connection mode between steel pipe concrete edge constraint superimposed shear wall bodies in an assembled building.
Background
Along with the development of the modernization of the building industry in China, the application of the precast shear wall in high-rise buildings (particularly high-rise houses) is relatively wide, and the research of the domestic precast reinforced concrete shear wall mainly aims at the full precast concrete shear wall, the semi-precast concrete shear wall and the superposed shear wall. The inventor provides a steel tube concrete edge constraint superimposed integral shear wall in a patent CN105569224A, which comprises two opposite precast concrete panels, rectangular steel tubes positioned on two sides of the precast concrete and at least one drawknot piece positioned between the precast concrete panels. At least one drawknot piece welded with the edge constraint component between the precast concrete panels is connected with cast-in-place concrete in a pouring mode, and concrete is poured in the hollow cavity of the concrete panels and the hollow part of the rectangular steel pipe in the construction process. The prefabricated shear wall with the edge constraint rectangular steel pipes is convenient to assemble, can effectively reduce the wet workload and the template consumption of a construction site, and has good ultimate bearing capacity and ductility.
The steel pipe concrete edge constraint superimposed shear wall earthquake-proof test research is 44.5 (2017) of Hunan university (from Koch edition) 27-36. The bearing capacity and displacement of the shear wall are examined, and experiments prove that the cracking load of the wall is larger than that of the cast-in-place concrete shear wall in the prior art, the yield load and the limit load are obviously improved, the ductility coefficient is also improved compared with that of the cast-in-place concrete shear wall, the yield ratio is smaller than that of the cast-in-place concrete shear wall, and the bearing effect is good. Patent CN205804673U discloses an assembled composite wall body of L type connection structure, and composite wall body passes through opening C shaped steel or U shaped steel and square steel pipe bolted connection that the back, and this connected mode connecting piece is too much, slows down construction speed.
In addition, the screw connection for steel pipes in the art is usually a single-sided screw connection, wherein a hole with internal threads is prefabricated on one of the steel pipes, and the connection is performed by accurate positioning. The stability of this kind of unilateral bolt is relatively poor, is pulled out easily, and patent CN105971118A provides a unilateral bolted connection mode of rectangle steel pipe and H shaped steel roof beam inner skleeve formula, through establishing telescopic mode reinforcement bolted connection in the rectangle steel pipe, has increased work load equally, is unfavorable for accelerating the construction progress.
Aiming at the connection of the steel tube concrete edge constraint superimposed integral shear wall, a more proper connection method is necessary to be provided, so that the construction difficulty is reduced, the cost is lowered, the quality is ensured to be reliable, and the mechanical property of the assembled shear wall can be improved.
Disclosure of Invention
To the bolted connection who uses among the prior art, bolt screw hole and locating hole work accuracy requirement is high, shortcoming that intensity is low provides a connected mode suitable for this steel pipe concrete edge constraint coincide integral shear force wall in this application, connects shear force wall edge rectangle steel pipe part through welded mode, is applicable to the edge constraint component more and is steel pipe concrete no wet operation connection, no template connection, quick connect, realize "one", "L", "T" or "cross" style of calligraphy various connection.
In order to achieve the technical effects, the application provides the following technical scheme:
the steel tube concrete edge constraint superimposed integral shear wall described in the following technical scheme comprises two precast concrete panels which are oppositely arranged, edge constraint components, namely rectangular steel tubes, which are positioned on two sides of the precast concrete panels, and also can be other forms of edge constraint components, and drawknot components which are positioned between the precast concrete panels and welded on the edge constraint components. The hollow cavity of the concrete panel and the hollow part of the rectangular steel pipe are poured with concrete during construction, namely the shear wall A in the application.
According to the first aspect of the application, a steel tube concrete edge constraint overlapping integral shear wall B is provided, the steel tube concrete edge constraint overlapping integral shear wall B comprises two precast concrete panels which are oppositely arranged, at least one drawknot piece which is located between the precast concrete panels and welded on an edge constraint component, rectangular steel tubes are arranged on two sides of the precast concrete panels, the edges of one side of the rectangular steel tubes extend out of steel webs with a certain length along the extending direction of a wall body to form a C-shaped open area, and concrete is poured in a hollow cavity of the concrete panels and a hollow part of the rectangular steel tubes during construction.
Preferably, the open end of the overhanging steel web of the shear wall B is provided with a bevel.
The rectangular steel pipe X is a steel pipe component with a rectangular cross section, and the length of the rectangular steel pipe X is the same as the height of a wall body constrained by the rectangular steel pipe X.
According to the second aspect of the invention, a preassembled steel tube concrete edge constraint overlapping integral shear wall combination is provided, and the integral shear wall A and/or B and/or the rectangular steel tube X are connected to obtain a one-shaped "," L-shaped "," T-shaped "or" cross-shaped assembled shear wall.
Preferably, the connection mode is that the steel pipes are directly welded in a butt joint mode or welded through overhanging steel webs at the edges of the steel pipes or the combination of the steel pipes and the overhanging steel webs.
In the prior art, a unilateral bolt is adopted to connect steel pipe components, a nut groove or a hole with internal threads and a positioning hole are required to be formed in the steel pipe in advance, and the precision requirement on construction operation is high. And unilateral bolt stability is relatively poor, drops or extract easily in the use, is unfavorable for the wall body stable. Adopt welded mode to replace the bolt to connect the steel pipe in this application, wall body stability is higher than bolted connection, can fast assembly, practices thrift engineering time. In addition, the connection to the shear wall in this application through the combination of steel web and rectangle steel pipe, can show the wind-resistant intensity and the stability of improvement wall body in the extending direction.
The invention provides a shear wall combination assembled in a straight shape, which comprises a double-sided steel tube concrete edge constraint overlapping integral shear wall A; the two-sided integral shear wall A is arranged in a straight shape, and shares a rectangular steel pipe at the joint, and cast-in-place concrete at two sides is connected by a connecting piece welded on the steel pipe wall to form a whole wall, namely, a steel pipe concrete edge constraint component is added at the middle part of the whole wall to form the integral shear wall. The "in-line" shear wall is defined as shear wall combination C.
In a fourth aspect of the present invention, there is provided a shear wall assembled in a straight line, comprising a shear wall a and a shear wall B or two-sided shear wall B and rectangular steel pipes X; the shear wall A and the shear wall B are arranged in a straight shape, and a steel web plate of the shear wall B is welded and connected with one rectangular steel pipe of the shear wall A; the two sides of the shear wall B are arranged in a straight line, the rectangular steel pipe is positioned at the center of the shear wall B, and the shear wall B is connected with the rectangular steel pipe X through a steel web.
The fifth aspect of the invention provides an L-shaped assembled shear wall, which comprises a double-sided steel pipe concrete edge constraint overlapping integral shear wall A or shear walls A and B; wherein, one side shear wall A is positioned in the vertical direction of the other side shear wall A, and rectangular steel pipes at one end of the two sides of the wall A are connected by welding; and one of the shear walls A and B is positioned in the vertical direction of the other side, and an overhanging web plate at one side of the shear wall B is welded with a rectangular steel pipe at one end of the shear wall A.
In a sixth aspect of the present invention, a "T" assembled shear wall is provided, by combining a shear wall C with a shear wall B; the overhanging steel web plate of the shear wall B is connected with a rectangular steel pipe at the center of the shear wall combination C.
In a seventh aspect of the present invention, a "T" assembled shear wall is provided, where the "in-line" shear wall assembly is welded to the shear wall B, and the shear wall B is welded to the rectangular steel tube X in the "in-line" shear wall assembly by an overhanging steel web.
According to an eighth aspect of the invention, a cross-shaped assembled shear wall is provided, the cross-shaped assembled shear wall comprises a shear wall combination C and two sides of shear walls B, and an overhanging steel web of the shear wall B is welded and connected with a rectangular steel pipe in the center of the shear wall combination C.
The invention has the beneficial effects that
1. In the prior art, a unilateral bolt is adopted to connect the steel pipe components, and the precision requirement of construction operation is high. The welded mode is adopted in the application, the steel pipes are not required to be connected through bolts, the stability of the wall is higher than that of the bolted connection, the construction operation does not need to prop up a template wet operation, the steel webs extending out from the edges of the steel pipes are directly welded or the two vertical steel pipes of the shear wall are directly welded, and the quick connection of the steel pipe concrete edge constraint superimposed shear wall is realized.
2. The wall body combined form that provides in this application can directly assemble at the mill, reduces job site's work load, and this application research discovers the combined form of steel pipe and steel web, can realize that the "L" "T" "ten" of two walls is connected.
3. By adopting the connection mode in the application, the steel web extending out of the edge of the rectangular steel pipe has the effect of being convenient to weld. On the other hand, in the wall connection part, the setting of the steel web has increased wall connection strength, and the reliability is good.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
FIG. 1 is a schematic view of a concrete filled steel tube edge-confined composite monolithic shear wall A in the application;
wherein, the hollow part of the hollow 3-rectangular steel pipe and the hollow part of the 4-rectangular steel pipe of the 1-precast concrete panel and the 2-concrete panel;
FIG. 2 is a schematic view of a concrete filled steel tube edge-constrained composite monolithic shear wall B in the application;
wherein, the concrete panel is 1-precast, the cavity of the concrete panel is 3-rectangular steel pipe, and the hollow part of the steel pipe is 4-rectangular steel pipe is 6-steel web;
FIG. 3 is a schematic view of a groove B of the steel pipe concrete edge constraint superimposed integral shear wall in the application;
wherein, the concrete panel is prefabricated 1-, the hollow cavity of the concrete panel is 3-rectangular steel pipe, and the hollow part of the steel pipe is 4-rectangular and is 5-groove;
FIGS. 4-1 to 4-3 are schematic diagrams showing the combination of the in-line preassembled steel pipe concrete edge constraint overlapping integral shear wall;
FIG. 4-1 is a schematic view of a shear wall assembly C;
FIG. 4-2 is a schematic diagram of a combination of shear wall A and shear wall B;
fig. 4-3 are schematic diagrams of a combination of a shear wall B and a rectangular steel tube X;
FIGS. 5-1 to 5-2 are schematic views of an L-shaped preassembled steel pipe concrete edge constraint overlapping integral shear wall combination in the application;
wherein, FIG. 5-1 is a schematic diagram of a combination of two-sided shear walls B;
FIG. 5-2 is a perspective view of the shear wall assembly of FIG. 5-1;
FIGS. 6-1 to 6-2 are schematic views of a T-shaped preassembled steel pipe concrete edge constraint overlapping integral shear wall combination in the application;
6-1 is a combined schematic diagram of a shear wall B and an in-line preassembled shear wall, wherein the shear wall B is a 1-precast concrete panel, a cavity 3-rectangular steel pipe of a 2-concrete panel, a hollow part 5-groove of a 4-rectangular steel pipe and a 6-steel web;
FIG. 6-2 is a schematic diagram of a shear wall B combined with an in-line preassembled concrete filled steel tube edge-constrained composite monolithic shear wall;
FIG. 7 is a schematic diagram of a cross-shaped preassembled concrete filled steel tube edge-confined composite monolithic shear wall assembly in the present application;
the concrete slab comprises a 1-precast concrete panel, a cavity 3-rectangular steel pipe of the 2-precast concrete panel, a groove at the end point of a hollow part 5-steel web of the 4-rectangular steel pipe and a 6-steel web.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, or combinations thereof.
As described in the background art, in the previous research process, the inventor provides a steel pipe concrete edge constraint superposition integral shear wall, and rectangular steel pipes are adopted as edge constraint components of precast concrete panels, so that the wet workload and the formwork support work in the use process can be effectively reduced. In the prior art, single-side bolt connection is adopted to connect steel pipe components, the single-side bolt is required to prefabricate an internal thread hole, a positioning hole or a nut groove on the steel pipe, the requirement on operation precision is high, and the construction time is prolonged. In order to solve the technical problem, the application provides a more efficient and convenient form to the equipment of this wall body, connects through the welding to integral type shear force wall, effectively reduces construction work load, improves the wall body performance.
In order to enable those skilled in the art to more clearly understand the technical solutions of the present application, the technical solutions of the present application will be described in detail below with reference to specific examples and comparative examples.
Example 1
As shown in fig. 1, the steel tube concrete edge constraint superimposed integral shear wall a in the application comprises two precast concrete panels 1 which are oppositely arranged, rectangular steel tubes 3 arranged on two sides of the precast concrete panels, and at least one drawknot piece which is arranged between the precast concrete panels and welded with an edge constraint component, wherein the drawknot piece is connected with the rectangular steel tubes through cast-in-place concrete in a pouring mode, and concrete is poured in a hollow cavity 2 of the concrete panels and a hollow part 4 of the rectangular steel tubes in a construction mode.
Example 2
As shown in fig. 2, the steel pipe concrete edge constraint superimposed integral shear wall B comprises two precast concrete panels 1 which are oppositely arranged, at least one drawknot piece which is positioned between the precast concrete panels and welded with an edge constraint component, rectangular steel pipes 3 which are positioned at two sides of the precast concrete panels, and cast-in-place concrete which are integrally formed through connecting pieces which are welded with the edge constraint component in the concrete panels, wherein the edge of one side of the rectangular steel pipe extends out of a steel web 6 with a certain length along the extending direction of the wall body to form a C-shaped open area, and a cavity 2 of the concrete panel and a hollow part 4 of the rectangular steel pipe are cast with concrete during construction.
As shown in fig. 3, the end points of the overhanging steel web of the rectangular steel pipe are provided with grooves 5.
Example 3
As shown in fig. 4-1 to 4-3, fig. 4-1 is the shear wall combination C, and fig. 4-2 is a "in-line" preassembled shear wall formed by combining a shear wall B and a shear wall a, wherein an overhanging steel web of the shear wall B is welded with a rectangular steel pipe of the shear wall a. In fig. 4-2, shear walls a and B are combined, the shear walls a and B are arranged in a straight shape, and a steel web of the shear wall B is welded with one of rectangular steel pipes of the shear wall a. Fig. 4-3 show a combination of two-sided shear walls B and rectangular steel pipes X, the shear walls B being arranged in a "straight" shape and being welded to the rectangular steel pipes X by steel webs.
Example 4
As shown in fig. 5-1 to 5-2, fig. 5 is an L-shaped preassembled shear wall combination formed by the shear wall combination, and fig. 5-1 comprises a double-sided steel pipe concrete edge constraint overlapping integral shear wall a; one side of the shear wall A is positioned in the vertical direction of the other side of the shear wall A, and rectangular steel pipes at one end of the two sides of the shear wall A are welded by welding.
Example 5
As shown in fig. 6-1 to 6-2, fig. 6-1 to 6-2 are the "T" shaped preassembled shear wall assembly formed by the above-mentioned shear wall assembly, and the shear wall is assembled by "one" type and the shear wall B, wherein the overhanging steel web of the shear wall B is welded with the rectangular steel pipe at the non-end point of the above-mentioned "one" type assembled shear wall.
Example 6
As shown in FIG. 7, the cross-shaped pre-assembled shear wall assembly formed by the shear wall assembly comprises a T-shaped assembled shear wall and a shear wall B in the embodiment 6 of the invention, wherein an overhanging steel web of the shear wall B is welded with a rectangular steel pipe at a non-end point of the T-shaped assembled shear wall.
For the components with the dimensions of 3000 multiplied by 1200 multiplied by 200, the axial pressure ratio is 0.15, the height-thickness ratio of the steel tube concrete edge constraint superimposed shear wall A and the cast-in-situ component is 15 and 20 respectively, and the ductility coefficient of the shear wall A is improved by 37.41 percent. When the steel distribution rate reaches 8.8%, the ductility coefficient is improved by 38.55%, and when the high-thickness ratio is 12 and 15, the ductility coefficient is improved by 38.78%. The peak load is increased by 34.10%,50.97% and 65.04%, respectively. The total energy consumption is improved by 25%, 36% and 37%.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (7)
1. The assembled steel tube concrete edge constraint superimposed shear wall combination is characterized in that a steel tube concrete edge constraint superimposed integral shear wall A and/or a steel tube concrete edge constraint superimposed integral shear wall B and/or a rectangular steel tube X are connected to obtain a one-shaped, L-shaped, T-shaped or cross-shaped assembled shear wall;
the connection mode is that the steel pipes are directly welded in a butt joint mode or welded through overhanging steel webs at the edges of the steel pipes or combined with the steel pipes;
the steel tube concrete edge constraint overlapping integral shear wall A comprises two precast concrete panels which are oppositely arranged, at least one drawknot piece positioned between the precast concrete panels, rectangular steel tubes positioned at two sides of the precast concrete panels, and cast-in-place concrete formed into a whole through connecting pieces welded with edge constraint components in the concrete panels, wherein a cavity of the concrete panels and a hollow part of the rectangular steel tubes are cast with concrete during construction;
the steel tube concrete edge constraint overlapping integral shear wall B comprises two precast concrete panels which are oppositely arranged, at least one drawknot piece positioned between the precast concrete panels, rectangular steel tubes positioned at two sides of the precast concrete panels, and cast-in-place concrete formed into a whole through connecting pieces welded with edge constraint members in the concrete panels, wherein the edge of one side of the rectangular steel tube extends out of steel webs with a certain length along the extending direction of the wall body to form a C-shaped open area, and a cavity of the concrete panel and a hollow part of the rectangular steel tube are cast with concrete during construction;
the open end of the overhanging steel web is provided with a groove;
the rectangular steel pipe X is a steel pipe component with a rectangular cross section, and the length of the rectangular steel pipe X is the same as the height of a wall body constrained by the rectangular steel pipe X.
2. The fabricated steel pipe concrete edge constraint superimposed shear wall combination of claim 1, wherein one of said "in-line" fabricated shear walls comprises a double-sided steel pipe concrete edge constraint superimposed monolithic shear wall a; the two-sided integral shear wall A is arranged in a straight shape, and a rectangular steel pipe at a public joint is formed by welding a connecting piece in precast concrete of the shear wall A and the rectangular steel pipe; the "in-line" shear wall is defined as shear wall combination C.
3. The fabricated steel tube concrete edge constraint superimposed shear wall combination of claim 1, wherein one of the "in-line" fabricated shear walls comprises a shear wall a and a shear wall B or two-sided shear walls B and rectangular steel tubes X; the shear wall A and the shear wall B are arranged in a straight shape, and a steel web plate of the shear wall B is welded and connected with one rectangular steel pipe of the shear wall A; the two sides of the shear wall B are arranged in a straight line, the rectangular steel pipe is positioned at the center of the shear wall B, and the shear wall B is connected with the rectangular steel pipe X through a steel web.
4. The fabricated steel pipe concrete edge-constrained composite shear wall assembly of claim 1, wherein one of said "L" fabricated shear walls comprises two-sided steel pipe concrete edge-constrained composite monolithic shear wall a or shear walls a and B; wherein, one side shear wall A is positioned in the vertical direction of the other side shear wall A, and rectangular steel pipes at one end of the two sides of the wall A are connected by welding; and one of the shear walls A and B is positioned in the vertical direction of the other side, and an overhanging web plate at one side of the shear wall B is welded with a rectangular steel pipe at one end of the shear wall A.
5. The fabricated steel tube concrete edge-constrained composite shear wall assembly of claim 2, wherein the "T" fabricated shear wall comprises a shear wall assembly C and a shear wall B, wherein an overhanging steel web of the shear wall B is connected with a rectangular steel tube at the center of the shear wall assembly C.
6. A fabricated concrete filled steel tube edge-constrained composite shear wall assembly as claimed in claim 3, wherein a "T" fabricated shear wall is formed by welding a "in-line" shear wall assembly to a shear wall B; the shear wall B is welded and connected with a rectangular steel pipe X in the straight shear wall combination through an overhanging steel web plate.
7. The fabricated steel tube concrete edge constraint superimposed shear wall combination of claim 2, wherein the cross-shaped fabricated shear wall comprises a shear wall combination C and two sides of the shear wall B, and an overhanging steel web of the shear wall B is welded with a rectangular steel tube in the center of the shear wall combination C.
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| CN201811571909.7A CN109723167B (en) | 2018-12-21 | 2018-12-21 | Assembled steel pipe concrete edge constraint superimposed shear wall combination |
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| CN110258857A (en) * | 2019-07-15 | 2019-09-20 | 湖北别一阁钢结构科技开发有限公司 | A kind of assembled modularization lightweight steel construction wall connecting construction and its construction method |
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| US7882669B2 (en) * | 2006-05-18 | 2011-02-08 | Ping Qu | Composite concrete shear wall for heat insulation |
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