CN110748039A - Assembled shear force wall of area restraint edge node module - Google Patents
Assembled shear force wall of area restraint edge node module Download PDFInfo
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- CN110748039A CN110748039A CN201911005314.XA CN201911005314A CN110748039A CN 110748039 A CN110748039 A CN 110748039A CN 201911005314 A CN201911005314 A CN 201911005314A CN 110748039 A CN110748039 A CN 110748039A
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- edge node
- shear wall
- node module
- strip
- prefabricated shear
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
Abstract
The invention discloses an assembled shear wall with a constraint edge node module, which comprises a lower-layer prefabricated shear wall board, an upper-layer prefabricated shear wall board and a constraint edge node module, wherein bulges are arranged on the periphery of the constraint edge node module, the upper bulge and the lower bulge of the constraint edge node module are respectively connected with the lower part of the upper-layer prefabricated shear wall board and the upper part of the lower-layer prefabricated shear wall board, strip-shaped steel plates are arranged outside two sides of the constraint edge node module, the strip-shaped steel plates on the two sides are fixed through a tie bolt, the strip-shaped steel plates are arranged at the two ends of the left bulge and the right bulge of the constraint edge node module and fix a floor slab through the tie bolt, the node assembly connection is transferred into a longitudinal and transverse wall body and the floor slab through the constraint edge node module, the phenomenon that the node is damaged due to complicated node connection structure and stress concentration can be avoided, and horizontal, the site construction can be simplified, and the standardized design of the connecting member is realized, so that the aim of reducing the cost is fulfilled.
Description
Technical Field
The invention relates to the field of assembled shear wall structures, in particular to an assembled shear wall with a constrained edge node module.
Background
A number of seismic surveys have shown that the failure of fabricated structural nodes is the primary cause of overall structural failure. The joint connection of the assembled components is the weakest link, the joint mode is difficult to ensure the continuous connection between the components, the internal force of the joints is often larger, the structure is easy to generate premature failure at the joints under the action of earthquake or wind load, wherein, the joint connection between the assembled shear wall boards still mainly adopts the lap joint of horizontal and vertical reinforcing steel bars, such as a sleeve connection mode, a slurry anchor connection mode and a mechanical connection mode, namely, a 'wet' connection mode of firstly connecting the reinforcing steel bars and then grouting, the structure is complex, the construction is inconvenient, and the reliable anti-seismic performance is difficult to ensure.
The application publication number is CN103510640B, and discloses an assembly type shear wall and an assembly method thereof, wherein a plurality of steel bar connecting bolts are pre-embedded at the upper end of a lower prefabricated shear wall plate, penetrate through bolt holes at the lower end of an upper prefabricated shear wall plate, and are fastened and connected through nuts. The assembly method enables stress to be concentrated on the bolt connection between the shear wall boards, and the phenomenon that the stress concentration causes early damage and damage of the nodes is easily caused.
Application publication number is CN 103883034B's patent application discloses "take assembled shear force wall and wall-roof beam connection structure of marginal restraint component", this shear force wall is equipped with the rectangle steel pipe in the four corners, and the upper and lower side is predetermine and is stretched out the reinforcing bar, and upper and lower layer wall body is through connecting steel plate, split bolt, stretch out on the wall and indulge muscle, pre-buried sleeve etc. realization initial connection in the roof beam, and the final connection is realized to the rethread post-cast concrete. The assembly method is complicated in construction, and still adopts a wet connection mode of firstly connecting reinforcing steel bars and then grouting.
The patent application with the application publication number of CN103104053B discloses 'an assembled concrete shear wall and a construction method', the assembled shear wall is formed by arranging bumps and grooves on adjacent shear wall units for splicing, and the connection between the shear walls is realized by internally penetrating prestressed steel bundles at two sides of the shear wall. According to the construction method, horizontal connection is not arranged, under the action of external load, the shear wall units are easy to slide in the inner direction and the outer direction of the shear wall, so that the lateral resistance of the shear wall is reduced, and in addition, the connection between the assembled shear wall and a floor slab is not considered.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides an assembled shear wall with a constrained edge node module, so as to solve the defect that a weak link is generated when the traditional prefabricated shear wall is connected at a node, realize the standardized design of each connecting component of the assembled shear wall, and finally achieve the purpose of reducing the cost.
According to the embodiment of the first aspect of the invention, the fabricated shear wall with the constraint edge node module comprises a lower-layer prefabricated shear wall board, an upper-layer prefabricated shear wall board and the constraint edge node module, wherein the constraint edge node module is provided with bulges along the vertical and horizontal directions, strip-shaped steel plates are respectively arranged outside two sides of the joint of the lower bulge of the constraint edge node module and the upper part of the lower-layer prefabricated shear wall board and the joint of the upper bulge of the constraint edge node module and the lower part of the upper-layer prefabricated shear wall board, the strip-shaped steel plates on the two sides are fixed through tie bolts, floor slabs are respectively arranged outside two ends of a left bulge and a right bulge of the constraint edge node module, the joint of the left bulge and the right bulge of the constraint edge node module and the floor slabs is respectively provided with strip-shaped steel plates, and the strip-shaped steel plates on the.
Has the advantages that: this assembled shear force wall of area restraint edge node module, through restraint edge node module with traditional node assembly connection shift to move about freely and quickly wall body and floor, not only can effectively avoid complicated node connection structure and the stress concentration that arouses to lead to the phenomenon of the too early destruction of node, concentrate level and vertical piece on moving about freely and quickly wall body and floor moreover, can simplify the site operation, realize the standardized design of connecting elements to reach reduce cost's purpose.
According to the fabricated shear wall with the restrained edge node modules, bolt holes are respectively formed in the upper portion of the lower prefabricated shear wall plate, the lower portion of the upper prefabricated shear wall plate and the protrusions around the restrained edge node modules, bolt holes are respectively formed in each floor plate, a plurality of bolt holes are also formed in each strip-shaped steel plate, and each pair of tie bolts is respectively installed at each bolt hole.
According to the fabricated shear wall with the constrained edge node module, the strip steel plate is made of Q345 steel.
According to the fabricated shear wall with the constrained edge node module, the distance between bolt holes in the strip-shaped steel plates is 300-500 mm.
According to the fabricated shear wall with the constrained edge node module, disclosed by the embodiment of the first aspect of the invention, the projection length of the periphery of the constrained edge node module is 400-600 mm.
According to the fabricated shear wall with the constrained edge node modules, the thickness of the cross section of each constrained edge node module is consistent with the thickness of the cross sections of the lower prefabricated shear wall panel and the upper prefabricated shear wall panel.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a cross-sectional left side view of a straight fabricated shear wall in an embodiment of the present invention;
FIG. 2 is a schematic structural view of a vertical face of a straight-line fabricated shear wall in an embodiment of the invention;
FIG. 3 is a cross-sectional top view of a fabricated shear wall in a channel configuration in accordance with an embodiment of the present invention;
FIG. 4 is a schematic structural view of an elevation of a T-shaped fabricated shear wall in an embodiment of the present invention;
FIG. 5 is a cross-sectional left side view of a T-shaped fabricated shear wall in an embodiment of the present invention;
FIG. 6 is a top view of a T-shaped fabricated shear wall in an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1-6, an assembled shear wall with constrained edge node modules includes a lower layer of prefabricated shear wall panels 10, the prefabricated shear wall panel of upper strata 20 and restraint edge node module 30, restraint edge node module 30 all is equipped with the arch along upper and lower and left and right sides direction, the lower arch of restraint edge node module 30 is equipped with the bar steel sheet 40 respectively outside the junction both sides with the upper portion of lower floor's prefabricated shear wall panel 10 and the last arch of restraint edge node module 30 and the lower part of upper strata prefabricated shear wall panel 20, the bar steel sheet 40 of both sides is fixed through split bolt 50, install floor 60 respectively outside the left arch of restraint edge node module 30 and the right arch both ends, the left arch of restraint edge node module 30 and the junction of floor 60 are equipped with the bar steel sheet 40 respectively outside the left arch and the right arch both ends and the floor 60, the bar steel sheet 40 of both sides is fixed through split bolt 50.
Preferably, the upper portion of the lower prefabricated shear wall panel 10, the lower portion of the upper prefabricated shear wall panel 20 and the protrusions around the constrained edge node modules 30 are respectively provided with bolt holes, each floor slab 60 is also respectively provided with bolt holes, each strip-shaped steel plate 40 is also provided with a plurality of bolt holes, each pair of tie bolts 50 is respectively installed at each bolt hole, and the lower prefabricated shear wall panel 10, the upper prefabricated shear wall panel 20 and the constrained edge node modules 30 are prefabricated and molded in a factory according to size design.
Preferably, the strip steel plate 40 is made of Q345 steel, and the thickness thereof is further determined according to the load.
Preferably, the bolt holes on the steel bar plate 40 are spaced apart from each other by 300mm to 500mm, and the diameter of the bolt holes on the steel bar plate 40 is designed according to the specific diameter sizes of the bolt holes on the lower prefabricated shear wall panel 10, the upper prefabricated shear wall panel 20 and the restraint edge node modules 30.
Preferably, the protrusion length of the constrained edge node module 30 is 400mm to 600 mm.
Preferably, the thickness of the cross section of the constrained edge node module 30 is consistent with the thickness of the cross sections of the lower prefabricated shear wall panel 10 and the upper prefabricated shear wall panel 20, so as to ensure smooth transition of the shear wall connection.
In this embodiment, taking one of the straight-line-shaped assembled shear walls as an example, as shown in fig. 1 to 3, the assembling method of the assembled shear wall of this embodiment includes:
the method comprises the following steps: providing a lower-layer prefabricated shear wall plate 10, wherein a plurality of split connecting bolt holes are formed in the upper part of the lower-layer prefabricated shear wall plate 10, and the lower-layer prefabricated shear wall plate 10 is mounted to the bottom;
step two: providing a middle constraint edge node module 30, wherein the constraint edge node module 30 is provided with a plurality of bolt holes at corresponding positions of the lower prefabricated shear wall plate 10, the upper prefabricated shear wall plate 20 and the floor slab 60;
step three: hoisting the restrained edge node module 30 in place to enable the restrained edge node module to be in butt joint with the lower-layer prefabricated shear wall plate 10 and the floor slab 60 in order;
step four: through bolt holes, the outer-wrapped strip-shaped steel plates 40 are arranged on two sides of the lower-layer prefabricated shear wall plate 10 and the floor slab 60 and are connected and fastened by using split bolts 50;
step five: providing an upper-layer prefabricated shear wall plate 20, wherein a plurality of opposite-pulling connecting bolt holes are formed in the lower portion of the upper-layer prefabricated shear wall plate 20, and hoisting the upper-layer prefabricated shear wall plate 20 to enable the upper-layer prefabricated shear wall plate to be in butt joint with the constraint edge node modules 30 in order;
step six: and the outer-coated strip-shaped steel plates 40 are arranged on two sides of the upper-layer prefabricated shear wall plate 20 through bolt holes and are connected and fastened by adopting split bolts 50.
In this embodiment, taking a T-shaped fabricated shear wall as an example, as shown in fig. 4 to 6, the method for assembling the fabricated shear wall of this embodiment includes:
the method comprises the following steps: providing lower-layer prefabricated T-shaped shear wall plates 11 and 12, arranging a plurality of split connecting bolt holes at the upper parts of the lower-layer prefabricated T-shaped shear wall plates 11 and 12, and mounting the lower-layer prefabricated T-shaped shear wall plates 11 and 12 to the bottoms;
step two: providing a middle constraint edge node module 30, wherein the constraint edge node module 30 is provided with a plurality of bolt holes at corresponding positions of the lower prefabricated shear wall plate 10, the upper prefabricated shear wall plate 20 and the floor slab 60;
step three: hoisting the restrained edge node module 30 in place to ensure that the restrained edge node module is in butt joint with the lower prefabricated T-shaped shear wall boards 11 and 12 and the floor slab 60 in order;
step four: through the bolt holes, the outer-coated strip-shaped steel plates 40 are arranged on two sides of the lower-layer prefabricated T-shaped shear wall plates 11 and 12 and the floor slab 60 and are connected and fastened by adopting split bolts 50;
step five: providing an upper-layer prefabricated T-shaped shear wall plates 21 and 22, wherein a plurality of split connecting bolt holes are formed in the lower portions of the upper-layer prefabricated T-shaped shear wall plates 21 and 22, and hoisting the upper-layer prefabricated T-shaped shear wall plates 21 and 22 to enable the upper-layer prefabricated T-shaped shear wall plates to be in butt joint with the constraint edge node modules 30 in order;
step six: and the outer-coated strip-shaped steel plates 40 are arranged on two sides of the upper prefabricated T-shaped shear wall plates 21 and 22 through bolt holes and are connected and fastened by using split bolts 50.
In summary, in the fabricated shear wall provided by the present invention, the vertical and horizontal walls and the joint portion between the vertical and horizontal walls and the floor slab 60 are designed as the independent constraint edge node modules 30, the constraint edge node modules 30 are then connected with the shear wall modules by using the external coated strip steel plates 40 and then bolted, so that the design idea that all horizontal and vertical seams are transferred to the vertical and horizontal walls and the floor slab 60 without joints is realized, the integral continuity of the joints is ensured, the phenomena of complex joint connection structure and premature damage of the joints of the traditional fabricated shear wall can be effectively avoided, and the horizontal and vertical joints are concentrated on the vertical and horizontal walls and the floor, so that the field construction can be simplified, the assembly quality can be improved, the standardized design of the connection members can be realized, and the purpose of reducing the cost can be finally achieved.
In this embodiment, taking one of the fabricated shear walls in a straight line as an example, the simulation test and the result of the fabricated shear wall of this embodiment are attached:
the method comprises the following steps: test piece design
Comparison test piece: the traditional assembled shear wall structure is 250mm in wall thickness, adopts C30 concrete, has three layers, is 3.6m high, and is 150mm in floor thickness. To simplify the model, the upper and lower precast shear walls are assumed to be connected tightly.
Sample test piece: in order to compare the effect with the effect of a reference test piece, the straight-line-shaped common concrete shear wall in the reference test piece is replaced by the straight-line-shaped assembly type shear wall in the patent embodiment of the invention. The restrained edge node module 30 is made of C40 concrete, extends out 400mm along the upper shear wall and the lower shear wall, the section thickness of the restrained edge node module is the same as that of the shear wall module, and the rest components are the same as those of the control test piece. For the convenience of model comparison, the constraint edge node module is connected and fastened with the shear wall module in the simulation.
Step two: establishment of finite element model
And respectively establishing finite element models of a reference test piece and a sample test piece by adopting general finite element software ETABS, wherein the shear wall and the node modules are simulated by adopting shell units, and the floor 60 model adopts a membrane unit.
Step three: analysis of operating conditions
And (3) designing 0.2g of fortification at 8 degrees, designing earthquake groups into a second group, and performing reaction spectrum analysis on the structure under the multi-earthquake condition to only calculate the normal stress and the shear stress.
Step four: test results
The stress of the connecting part of the lower-layer prefabricated shear wall plate 10 and the upper-layer prefabricated shear wall plate 20 of the comparison test piece and the stress of the restraining edge node module 30 of the sample test piece are compared with the stress of the connecting part of the upper layer and the lower layer, and experiments show that as shown in tables 1-2, the assembled shear wall can effectively reduce the stress of the connecting part of the shear wall, the normal stress and the shear stress are respectively reduced by 50.1% and 18.8% to the maximum extent, the stress of the shear wall is more reasonable, and the safety reserve of the shear wall is effectively improved.
The lower prefabricated shear wall on the traditional fabricated shear wall adopts a 'wet' connection mode of firstly connecting reinforcing steel bars and then grouting, the joint is the weakest link, the stress at the joint is larger, and the condition that the joint is damaged and destroyed in advance easily occurs during earthquake. The invention transfers the node assembly connection to the longitudinal and transverse walls and the floor slab 60, thereby ensuring the continuity of the nodes, and compared with the traditional assembly type shear wall modules, the stress at the joints of the lower-layer prefabricated shear wall panel 10, the upper-layer prefabricated shear wall panel 20 and the restraint node modules 30 is smaller and more reasonable. In addition, the shear wall modules and the constraint edge node modules are prefabricated in factories and transported to a construction site for assembly, so that the site construction can be simplified, the standardized design of connecting components is realized, and the purpose of reducing the cost is achieved.
The above description is only about the effect test analysis of the patent of the invention for restraining the edge node module from extending 400mm along the upper and lower shear walls, and the specific size of the node module is determined by calculation and analysis according to the actual engineering requirements.
TABLE 1 wall limb maximum normal stress contrast
TABLE 2 wall limb maximum shear stress contrast
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (6)
1. The utility model provides an assembled shear force wall of area restraint edge node module which characterized in that includes: a lower prefabricated shear wall panel (10), an upper prefabricated shear wall panel (20) and a restraint edge node module (30), the restraining edge node modules (30) are provided with bulges along the vertical and horizontal directions, strip-shaped steel plates (40) are respectively arranged outside two sides of the joint of the lower bulge of the restraining edge node module (30) and the upper part of the lower prefabricated shear wall plate (10) and the joint of the upper bulge of the restraining edge node module (30) and the lower part of the upper prefabricated shear wall plate (20), each strip-shaped steel plate (40) on two sides is fixed through a tie bolt (50), the floor slabs (60) are respectively arranged outside the two ends of the left bulge and the right bulge of the constraint edge node module (30), the joint of the left protruding end and the right protruding end of the constraint edge node module (30) and the floor slab (60) is externally provided with a strip steel plate (40), and the strip steel plates (40) on the two sides are fixed through split bolts (50).
2. The fabricated shear wall with constrained edge node modules of claim 1, wherein: the upper portion of lower floor's prefabricated shear force wallboard (10), the lower part of upper strata prefabricated shear force wallboard (20) and restraint edge node module (30) are equipped with the bolt hole on the arch all around respectively, also be equipped with the bolt hole on each floor (60) respectively, still include each also be equipped with a plurality of bolt holes on strip shaped steel plate (40), each split bolt (50) is installed respectively in each bolt hole department.
3. The fabricated shear wall with constrained edge node modules of claim 2, wherein: the strip-shaped steel plate (40) is made of Q345 steel.
4. The fabricated shear wall with constrained edge node modules of claim 2, wherein: the distance between the bolt holes on the strip-shaped steel plate (40) is 300-500 mm.
5. The fabricated shear wall with constrained edge node modules of claim 1, wherein: the protruding length of the constraint edge node module (30) is 400-600 mm.
6. The fabricated shear wall with constrained edge node modules of claim 1, wherein: the cross-sectional thickness of the restraint edge node module (30) is consistent with that of the lower prefabricated shear wall plate (10) and the upper prefabricated shear wall plate (20).
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| CN201911005314.XA CN110748039A (en) | 2019-10-22 | 2019-10-22 | Assembled shear force wall of area restraint edge node module |
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| CN201911005314.XA CN110748039A (en) | 2019-10-22 | 2019-10-22 | Assembled shear force wall of area restraint edge node module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962816A (en) * | 2021-02-09 | 2021-06-15 | 三一筑工科技股份有限公司 | Connecting structure of steel plate combined wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962816A (en) * | 2021-02-09 | 2021-06-15 | 三一筑工科技股份有限公司 | Connecting structure of steel plate combined wall |
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