CN110541500B - Assembled shear wall structure and construction method - Google Patents

Assembled shear wall structure and construction method Download PDF

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Publication number
CN110541500B
CN110541500B CN201910943010.1A CN201910943010A CN110541500B CN 110541500 B CN110541500 B CN 110541500B CN 201910943010 A CN201910943010 A CN 201910943010A CN 110541500 B CN110541500 B CN 110541500B
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shear wall
shear
steel
layer
steel bar
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CN110541500A (en
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张风亮
韩大富
朱武卫
田鹏刚
边兆伟
毛冬旭
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Shaanxi Construction Engineering Co ltd
Shaanxi Architecture Science Research Institute Co Ltd
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Shaanxi Construction Engineering Co ltd
Shaanxi Architecture Science Research Institute Co Ltd
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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

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

The invention discloses an assembled shear wall structure and a construction method, wherein the structure comprises an integral shear wall structure formed by connecting multiple layers of shear wall plates, two adjacent layers of shear wall plates are connected through a horizontal connecting structure, and the horizontal connecting structure comprises a grouting structure and a middle supporting structure; the method comprises the following steps: 1. installing a bottom layer shear wallboard; 2. the upper layer of shear wallboard is installed; 3. and (5) judging the construction completion of the integral shear wall structure. The invention has reasonable design, simple and convenient construction, short period, low cost and good use effect, the vertically stressed steel bars of the upper and lower adjacent two layers of shear wall boards are lapped and welded into a whole, and a middle supporting structure is arranged at the joint between the upper and lower adjacent two layers of shear wall boards, so that on one hand, a larger space is provided for the lap joint of the steel bars of the upper and lower shear wall boards, and the compactness of grouting can be ensured; on the other hand, the connection strength, the shearing resistance and the ductility between the upper and lower adjacent two layers of shear wallboards are improved, and the integrity of the upper and lower adjacent two layers of shear wallboards is effectively enhanced.

Description

Assembled shear wall structure and construction method
Technical Field
The invention belongs to the technical field of assembly type shear wall construction, and particularly relates to an assembly type shear wall structure and a construction method.
Background
In recent years, assembled shear wall structures have been greatly developed. The fabricated concrete shear wall structure refers to a concrete shear wall structure which is formed into a whole after all or part of the fabricated concrete shear wall structure adopts prefabricated wallboard components and is connected in a reliable connection mode, and the fabricated concrete shear wall structure is also called an assembled integral shear wall structure or an assembled shear wall structure. The prefabricated wallboard components are cast and molded in advance in a prefabricated component factory or a prefabricated field, then transported to a construction site and mechanically hoisted in place, and finally wet-type connection such as pouring concrete, cement-based grouting materials and the like is utilized to form the integral concrete shear wall structure. At present, the assembled integral shear wall structure is widely applied to high-rise assembled structures due to the advantages of good integrity, high rigidity, high bearing capacity and the like. The connection quality, bearing capacity, ductility, durability and the like of the steel bar connection nodes and joints in two adjacent prefabricated wallboard components directly influence the construction quality, stress performance, use effect and service life of the constructed and formed assembled integral shear wall structure.
However, at present, when an assembled integral shear wall structure is constructed, a unified and standard construction method is not available, the defects of random construction operation, complex construction process, poor node connection reliability, poor structural integrity and the like are inevitably existed in the construction process, multiple anti-seismic measures are absent, the stress requirement under the action of repeated load is difficult to meet, the construction quality of the constructed assembled integral shear wall structure is difficult to be ensured, and the use effect is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an assembled shear wall structure which has the advantages of simple structure, reasonable design, simple and convenient construction and good use effect, is welded and fixed into a whole after being overlapped with vertical stress steel bars of upper and lower adjacent layers of shear wall boards, has simple and convenient connection, reliable connection and easy connection quality guarantee, can effectively ensure the stress performance of the connection position of the vertical stress steel bars, and meanwhile, a middle supporting structure is arranged at the connection position between the upper and lower adjacent layers of shear wall boards, thereby further improving the connection strength, the shearing resistance and the stress effect of the connection position between the upper and lower adjacent layers of shear wall boards and effectively enhancing the integrity of the upper and lower adjacent layers of shear wall boards.
In order to solve the technical problems, the invention adopts the following technical scheme: an assembled shear wall structure, its characterized in that: the integrated shear wall structure is formed by connecting a plurality of layers of shear wall boards from top to bottom, wherein the structures of the plurality of layers of shear wall boards are identical and are uniformly distributed on the same vertical surface, the thicknesses of the plurality of layers of shear wall boards are identical, and the integrated shear wall structure is a rectangular wall body;
Each layer of shear wall board is vertically distributed and is a prefabricated shear wall, and each prefabricated shear wall is a rectangular wall which is horizontally distributed; each prefabricated shear wall comprises a concrete wall body and an internal supporting framework poured into the concrete wall body; the inner supporting framework comprises a left vertical steel bar framework and a right vertical steel bar framework which are symmetrically distributed, the two vertical steel bar frameworks are distributed in parallel, and the two vertical steel bar frameworks are distributed along the length direction of the prefabricated shear wall; each vertical reinforcement cage is formed by connecting N vertical stress reinforcements which are vertically distributed with a plurality of longitudinal horizontal reinforcements which are vertically distributed on the same vertical surface from bottom to top, and the plurality of vertical stress reinforcements are distributed on the same vertical surface from front to back along the length direction of the prefabricated shear wall; each longitudinal horizontal steel bar in the vertical steel bar framework is fixedly connected with a plurality of vertical stress steel bars into a whole; wherein N is a positive integer and N is more than or equal to 5; the bottom section of each vertical stress steel bar in the precast shear wall extends to the lower part of the concrete wall, the upper section of each vertical stress steel bar extends to the upper part of the concrete wall, the bottom section and the top section are steel bar exposed sections, the length of each steel bar exposed section is L, and the value range of L is 40 cm-60 cm;
Two vertical stress steel bars symmetrically distributed on the left and right in the precast shear wall form a stress steel bar group, and each stress steel bar group is positioned on one cross section of the precast shear wall; the vertical steel reinforcement framework positioned on the left side of the prefabricated shear wall is a left steel reinforcement framework, and the vertical steel reinforcement framework positioned on the right side of the prefabricated shear wall is a right steel reinforcement framework;
the prefabricated shear wall is an external-reinforcement shear wall or an internal-reinforcement shear wall, the external-reinforcement shear wall and the internal-reinforcement shear wall in the integral shear wall structure are distributed in a staggered manner, and the horizontal spacing between two adjacent vertical stress reinforcements in front and back in all vertical reinforcement frameworks of the integral shear wall structure is the same; the distance between the left and right vertical reinforcement cages in the reinforcement external shear wall is larger than the distance between the left and right vertical reinforcement cages in the reinforcement internal shear wall, the horizontal distance between the left side wall of the left reinforcement cage and the right side wall of the right reinforcement cage in the reinforcement internal shear wall is d, and the clear distance between the left and right vertical reinforcement cages in the reinforcement external shear wall is the same as d;
The upper and lower adjacent layers of the shear wallboards in the integral shear wall structure are connected through a horizontal connecting structure, and the horizontal connecting structure is distributed along the length direction of the integral shear wall structure; the horizontal connecting structure comprises a grouting structure formed by pouring grouting materials poured between an upper layer and a lower layer of adjacent shear wall boards and a middle supporting structure poured in the middle of the inner side of the grouting structure, the grouting structure is horizontally arranged and is a horizontal grouting layer arranged along the length direction of the integral shear wall structure, the cross section of the horizontal grouting layer is square, and the width of the horizontal grouting layer is the same as the thickness of the prefabricated shear wall; the horizontal grouting layer is connected between the upper layer and the lower layer of the shear wall boards, and the vertical height of the horizontal grouting layer is larger than L; the middle supporting structure comprises an I-steel which is horizontally arranged, an upper rigid protection layer which is arranged right above the I-steel, and a lower rigid protection layer which is arranged right below the I-steel, wherein the I-steel is arranged along the length direction of the integral shear wall structure, and the upper rigid protection layer and the lower rigid protection layer are horizontally arranged and are both arranged along the length direction of the integral shear wall structure; the upper wing plate and the lower wing plate of the I-steel are horizontally arranged and are both arranged along the length direction of the integral shear wall structure; the upper rigid protection layer comprises a plurality of upper steel cushion blocks which are arranged on the same horizontal plane from front to back along the length direction of the integral shear wall structure, and the plurality of upper steel cushion blocks are welded and fixed on the upper wing plate; the lower rigid protection layer comprises a plurality of lower steel cushion blocks which are arranged on the same horizontal plane from front to back along the length direction of the integral shear wall structure, and the plurality of lower steel cushion blocks are welded and fixed on the lower wing plate; the upper surface of the upper rigid protection layer and the bottom surface of the lower rigid protection layer are both horizontal planes, and the vertical distance between the upper surface of the upper rigid protection layer and the bottom surface of the lower rigid protection layer is not greater than the vertical height of the grouting structure; the lengths of the horizontal connecting structure and the I-steel are the same as the length of the integral shear wall structure;
The upper and lower adjacent layers of the shear wall plates in the integral shear wall structure comprise an upper layer of shear wall plates and a lower layer of shear wall plates positioned right below the upper layer of shear wall plates, the bottom sections of all vertical stress steel bars in the upper layer of shear wall plates are poured in a grouting structure, and the upper sections of all vertical stress steel bars in the lower layer of shear wall plates are poured in the grouting structure; the stress steel bar sets in the lower-layer shear wallboard are lower-layer stress steel bar sets, and the stress steel bar sets in the upper-layer shear wallboard are upper-layer stress steel bar sets; the upper layer stress steel bar groups are uniformly distributed right above each lower layer stress steel bar group in the upper and lower adjacent layers of the shear wall boards, each lower layer stress steel bar group and one upper layer stress steel bar group right above the lower layer stress steel bar group form a stress steel bar connection group, and four vertical stress steel bars in each stress steel bar connection group are positioned on the same cross section of the integral shear wall structure;
the bottom section of each vertical stress steel bar in the left steel bar framework of the upper-layer shear wallboard is an exposed section on the left upper side, and the bottom section of each vertical stress steel bar in the right steel bar framework of the upper-layer shear wallboard is an exposed section on the right upper side; the upper section of each vertical stress steel bar in the left steel bar framework of the lower-layer shear wallboard is a left lower-side exposed section, and the upper section of each vertical stress steel bar in the right steel bar framework of the lower-layer shear wallboard is a right lower-side exposed section; the left upper exposed section and the left lower exposed section in each stress steel bar connecting group are lapped and welded into a whole, and the right upper exposed section and the right lower exposed section in each stress steel bar connecting group are lapped and welded into a whole.
Above-mentioned assembled shear force wall structure, characterized by: the left upper exposed section and the left lower exposed section in each stressed steel bar connecting group are connected to form a left steel bar connecting structure, and the right upper exposed section and the right lower exposed section in each stressed steel bar connecting group are connected to form a right steel bar connecting structure; the left steel bar connecting structure and the right steel bar connecting structure in each stressed steel bar connecting group are symmetrically distributed, and the middle supporting structure is arranged between the left steel bar connecting structure and the right steel bar connecting structure.
Above-mentioned assembled shear force wall structure, characterized by: the upper steel cushion block and the lower steel cushion block are both cube cushion blocks.
Above-mentioned assembled shear force wall structure, characterized by: the upper steel cushion block and the lower steel cushion block are horizontally arranged, and the upper steel cushion block and the lower steel cushion block are arranged along the thickness direction of the integral shear wall structure.
Above-mentioned assembled shear force wall structure, characterized by: the upper wing plates and the lower wing plates of the I-steel are symmetrically distributed, the structures and the sizes of all lower steel cushion blocks in the lower rigid protection layer are the same, the structures and the sizes of all upper steel cushion blocks in the upper rigid protection layer are the same, and the structures and the sizes of the upper steel cushion blocks and the lower steel cushion blocks are the same; a plurality of lower steel cushion blocks in the lower rigid protection layer are uniformly distributed, and a plurality of upper steel cushion blocks in the upper rigid protection layer are uniformly distributed;
The left side walls of the upper steel cushion block and the lower steel cushion block are all flush with the left side wall of the upper wing plate of the connected I-steel, and the right side walls of the upper steel cushion block and the lower steel cushion block are all flush with the right side wall of the upper wing plate of the connected I-steel.
Above-mentioned assembled shear force wall structure, characterized by: the distance between the front and rear adjacent two upper steel cushion blocks in the upper rigid protection layer is the same as the distance between the front and rear adjacent two lower steel cushion blocks in the lower rigid protection layer, and one lower steel cushion block is arranged under each upper steel cushion block in the upper rigid protection layer; the distance between the front and rear adjacent steel-feeding cushion blocks in the upper rigid protective layer is 250-350 mm, the front and rear width of the steel-feeding cushion blocks is D, the value range of D is 150-180 mm, and the thickness of the steel-feeding cushion blocks is 50-80 mm.
Above-mentioned assembled shear force wall structure, characterized by: the bottom surface of the lower steel cushion block is higher than the bottom surface of the grouting structure, and the upper surface of the upper steel cushion block is lower than the upper surface of the grouting structure; the vertical distance between the bottom surface of the lower steel cushion block and the bottom surface of the grouting structure where the lower steel cushion block is positioned and the vertical distance between the upper surface of the upper steel cushion block and the upper surface of the grouting structure where the upper steel cushion block is positioned are not more than 1cm.
Above-mentioned assembled shear force wall structure, characterized by: the web plate of the I-steel is vertically arranged, and a plurality of shearing resistant groups which are horizontally arranged are arranged on the web plate from top to bottom; each shear resistant group comprises two rows of shear resistant pieces symmetrically arranged on the left side and the right side of the web, each row of shear resistant pieces comprises a plurality of shear resistant pieces which are arranged on the same horizontal plane from front to back along the length direction of the web, and each shear resistant piece is horizontally arranged and vertically arranged with the web.
Meanwhile, the invention also discloses a construction method of the assembled shear wall structure, which has the advantages of simple steps, reasonable design, simple construction and good use effect, and is characterized in that: and respectively installing a plurality of layers of the shear wallboards from bottom to top, wherein the process is as follows:
step one, mounting a bottom layer shear wallboard: hoisting the bottom-layer shear wall boards of the multi-layer shear wall boards in place by adopting hoisting equipment, and completing the installation process of the bottom-layer shear wall boards;
the bottom layer of the shear wallboard is one layer of the shear wallboard at the bottommost part of the plurality of layers of the shear wallboards;
step two, mounting a shear wallboard at the upper layer, wherein the process is as follows:
Step 201, hoisting a middle supporting structure: before the upper layer of the shear wall board is hoisted, hoisting the middle supporting structure in place by adopting hoisting equipment, and enabling the hoisted middle supporting structure to be positioned right above the upper shear wall board;
the upper layer of the shear wallboard is a currently installed shear wallboard, and the upper shear wallboard is a layer of the shear wallboard which is positioned below the currently installed shear wallboard and adjacent to the currently installed shear wallboard in the integral shear wall structure; the currently installed shear wallboard is the upper layer shear wallboard, and the upper layer shear wallboard is the lower layer shear wallboard which is installed completely;
step 202, hoisting a shear wallboard: hoisting the currently installed shear wall panel into place by using the hoisting equipment, and positioning the currently installed shear wall panel directly above the middle supporting structure in step 201;
step 203, steel bar connection: welding and fixing the left upper exposed section and the left lower exposed section of each stressed steel bar connecting group in the current installed shear wallboard and the upper shear wallboard into a whole by adopting welding equipment, and simultaneously welding and fixing the right upper exposed section and the right lower exposed section of each stressed steel bar connecting group in the current installed shear wallboard and the upper shear wallboard into a whole by adopting welding equipment;
Step 204, supporting a molding template: a forming template for constructing a grouting structure is erected at the joint between the currently installed shear wallboard and the upper shear wallboard;
the molding template comprises a left vertical side template and a right vertical side template which are symmetrically distributed, wherein the vertical side template is a straight template which is vertically distributed and is distributed along the length direction of the integral shear wall structure;
step 205, grouting: pouring grouting material into the forming template in the step 204 to obtain a grouting structure connected between the currently installed shear wallboard and the upper shear wallboard, pouring the middle supporting structure in the step 201 into the grouting structure, and pouring the left upper exposed section, the left lower exposed section, the right upper exposed section and the right lower exposed section of each stressed steel bar connecting group in the step 203 into the grouting structure to obtain a horizontal connecting structure for construction forming; after the grouting material is solidified, finishing the installation process of the currently installed shear wallboard;
thirdly, judging the construction completion of the integral shear wall structure: judging whether all the shear wallboards in the integral shear wall structure are installed or not, and completing the construction process of the integral shear wall structure after judging that a plurality of layers of the shear wallboards in the integral shear wall structure are installed; otherwise, returning to the step two.
The method is characterized in that: in step 205, after grouting material is poured into the molding template, the grouting structure is also required to be maintained for 1-2 days.
Compared with the prior art, the invention has the following advantages:
1. the shear wall structure has the advantages of simple structure, low input cost and convenient construction.
2. The shear wall structure adopted has good integrity, good stress performance and good use effect, wherein the integrity is ensured by welding and fixing the upper and lower layers of shear walls into a whole after the vertical stress steel bars are lapped, and on the basis of the vertical stress steel bars are lapped and welded, the grouting structure is adopted to further ensure the connection strength and the connection effect between the upper and lower layers of shear walls, the connection is reliable, the input cost is lower, the construction is simple and convenient, the construction quality is easy to ensure, and only the forming template is required to be erected and grouting materials are poured.
3. The middle supporting structure is machined in advance in a factory, so that machining is simple and convenient, machining quality can be effectively guaranteed, only installation is needed on site, site construction efficiency is effectively improved, site construction difficulty is reduced, and construction period is shortened.
4. The adopted middle supporting structure is reasonable in design, and the upper rigid protective layer welded and fixed on the upper wing plate of the I-steel forms a saw upper tooth wave-shaped shearing-resistant structure, so that on one hand, the upper part of the middle connecting structure is more firmly and reliably connected with the grouting structure into a whole, the connection strength and connection reliability of the middle connecting structure and the grouting structure are improved, and the integrity of the horizontal connecting structure is ensured; on the other hand, the connection strength and the shearing resistance between the horizontal connection structure and the upper-layer shear wallboard can be effectively improved, the stress effect of the connection part between the horizontal connection structure and the upper-layer shear wallboard is improved, and the integrity and the connection reliability of the horizontal connection structure and the upper-layer shear wallboard are ensured. The lower rigid protective layer welded and fixed on the lower wing plate forms a lower sawtooth waveform shear structure, so that on one hand, the lower part of the middle connecting structure is more firmly and reliably connected with the grouting structure into a whole, the connection strength and the connection reliability of the middle connecting structure and the grouting structure are improved, and the integrity of the horizontal connecting structure is ensured; on the other hand, the connection strength and the shearing resistance between the horizontal connection structure and the lower-layer shear wallboard can be effectively improved, the stress effect of the connection part between the horizontal connection structure and the lower-layer shear wallboard is improved, and the integrity and the connection reliability of the horizontal connection structure and the lower-layer shear wallboard are ensured. The I-steel in the middle connecting structure is simple in structure and low in input cost, the I-steel is high in strength, the I-steel arranged in the middle of the inner side of the horizontal connecting structure is a common I-steel, the integrity, the shearing resistance and the stress effect of the horizontal connecting structure can be effectively improved, the problems of dislocation, displacement, fracture and the like caused by shaking of the upper and lower layers of shear walls of the horizontal connecting structure are avoided, and the service effect and the service life of the horizontal connecting structure are ensured; meanwhile, the I-steel has certain self-adaptive deformability, and the left-side steel bar connecting structure and the right-side steel bar connecting structure have certain self-adaptive deformability, so that the horizontal connecting structure has certain self-adaptive deformability, the ductility and the service life of the horizontal connecting structure can be effectively improved, the stress performance and the use effect of the integral shear wall structure are further improved, and the connecting quality, the bearing capacity, the ductility and the durability of the connecting part between the upper layer shear wall and the lower layer shear wall are substantially improved.
5. The vertical stress steel bar is connected with the grouting structure, the grouting structure is provided with a heavy anti-seismic measure, the integrity between the upper layer of shear wall plate and the lower layer of shear wall plate can be ensured, the integral seismic performance of the traditional assembly type shear wall structure can be effectively improved, the seismic disaster reduction capacity of the assembly type shear wall structure can be effectively enhanced, the stress requirement under the action of repeated load is met, and the service effect and the service life of the construction forming integral type shear wall structure can be further ensured.
6. The constructed integrated shear wall structure has reasonable structure design, simple and convenient construction and good use effect, adopts a wet connection mode, adopts a middle supporting structure in a horizontal connection structure for further strengthening and reinforcing, and overcomes the problems of larger wet workload, poor connection reliability, poor structural integrity, poor stress effect and the like in the traditional wet connection; meanwhile, the middle supporting structure is adopted to strengthen and strengthen the traditional wet-type connecting structure, so that the use effect and the service life of the integral shear wall structure can be effectively improved, and the integrity, the stress effect, the bearing performance, the anti-seismic performance, the ductility and the like of the integral shear wall structure are greatly improved.
7. The construction method has the advantages of simple steps, convenient realization, easy control of construction quality, good construction effect, good use effect, long service life, high construction speed, short construction period and little environmental pollution of the constructed and formed integral shear wall structure.
In summary, the invention has reasonable design, simple construction, short period, low cost and good use effect, the vertical stress steel bars of the upper and lower adjacent layers of shear wall boards are lapped and welded into a whole, the steel bars are connected simply and reliably, the connection quality is easy to ensure, the stress performance of the connection position of the vertical stress steel bars can be effectively ensured, meanwhile, the middle supporting structure is arranged at the connection position between the upper and lower adjacent layers of shear wall boards, on one hand, a larger space can be provided for the lap joint of the steel bars of the upper and lower shear wall boards, and the compactness of grouting can be ensured; on the other hand, the connecting strength, the shearing resistance and the ductility between the upper and lower adjacent two-layer shear wallboards can be improved, the integrity of the upper and lower adjacent two-layer shear wallboards can be effectively enhanced, the connecting strength, the shearing resistance and the stress effect of the connecting part between the upper and lower adjacent two-layer shear wallboards can be further improved, the integrity of the upper and lower adjacent two-layer shear wallboards can be effectively enhanced, and the problems of complex construction process, difficult control of construction quality, poor structural integrity, poor stress performance, poor anti-seismic effect and the like of the conventional fabricated structure can be effectively solved.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic cross-sectional view of an assembled shear wall structure of the present invention.
Fig. 2 is a schematic longitudinal view of the mid-support structure of the present invention.
Fig. 3 is a block flow diagram of the construction method of the present invention.
Reference numerals illustrate:
1-prefabricating a shear wall; 1-1, a concrete wall; 1-2, longitudinal horizontal steel bars;
1-3, vertical stress steel bars; 1-4, transverse horizontal steel bars; 2-a horizontal connection structure;
2-1-grouting structure; 2-I-steel; 2-3-feeding steel cushion blocks;
2-4 parts of lower steel cushion blocks; 2-5-shearing resistant parts.
Detailed Description
The assembled shear wall structure shown in fig. 1 comprises an integral shear wall structure formed by connecting a plurality of layers of shear wall plates from top to bottom, wherein the structures of the plurality of layers of shear wall plates are identical and are uniformly distributed on the same vertical surface, the thicknesses of the plurality of layers of shear wall plates are identical, and the integral shear wall structure is a rectangular wall body;
each layer of shear wall board is vertically distributed and is a prefabricated shear wall 1, and each prefabricated shear wall 1 is a rectangular wall body horizontally distributed; each precast shear wall 1 comprises a concrete wall body 1-1 and an internal supporting framework poured into the concrete wall body 1-1; the inner supporting framework comprises a left vertical steel bar framework and a right vertical steel bar framework which are symmetrically distributed, the two vertical steel bar frameworks are distributed in parallel, and the two vertical steel bar frameworks are distributed along the length direction of the prefabricated shear wall 1; each vertical reinforcement cage is formed by connecting N vertical stress reinforcements 1-3 which are vertically distributed and a plurality of longitudinal horizontal reinforcements 1-2 which are vertically distributed on the same vertical surface from bottom to top, and the plurality of vertical stress reinforcements 1-3 are vertically distributed on the same vertical surface from front to back along the length direction of the prefabricated shear wall 1; each longitudinal horizontal steel bar 1-2 in the vertical steel bar framework is fixedly connected with a plurality of vertical stress steel bars 1-3 into a whole; wherein N is a positive integer and N is more than or equal to 5; the bottom section of each vertical stress steel bar 1-3 in the precast shear wall 1 extends to the lower part of the concrete wall 1-1, the upper section of each vertical stress steel bar 1-3 extends to the upper part of the concrete wall 1-1, the bottom section and the top section are steel bar exposed sections, the length of each steel bar exposed section is L, and the value range of L is 40 cm-60 cm;
Two vertical stress steel bars 1-3 which are symmetrically distributed in the left and right of the precast shear wall 1 form a stress steel bar group, and each stress steel bar group is positioned on one cross section of the precast shear wall 1; the vertical steel reinforcement framework positioned on the left side in the precast shear wall 1 is a left steel reinforcement framework, and the vertical steel reinforcement framework positioned on the right side in the precast shear wall 1 is a right steel reinforcement framework;
the prefabricated shear wall 1 is an external-reinforcement shear wall or an internal-reinforcement shear wall, the external-reinforcement shear wall and the internal-reinforcement shear wall in the integral shear wall structure are staggered, and the horizontal spacing between two adjacent vertical stress reinforcements 1-3 in front and back in all vertical reinforcement frameworks of the integral shear wall structure is the same; the distance between the left and right vertical reinforcement cages in the reinforcement external shear wall is larger than the distance between the left and right vertical reinforcement cages in the reinforcement internal shear wall, the horizontal distance between the left side wall of the left reinforcement cage and the right side wall of the right reinforcement cage in the reinforcement internal shear wall is d, and the clear distance between the left and right vertical reinforcement cages in the reinforcement external shear wall is the same as d;
The upper and lower adjacent layers of the shear wallboards in the integral shear wall structure are connected through a horizontal connecting structure 2, and the horizontal connecting structure 2 is distributed along the length direction of the integral shear wall structure; the horizontal connecting structure 2 comprises a grouting structure 2-1 formed by pouring grouting materials poured between an upper layer and a lower layer of the shear wall boards and a middle supporting structure poured in the middle of the inner side of the grouting structure 2-1, the grouting structure 2-1 is horizontally arranged and is a horizontal grouting layer arranged along the length direction of the integral shear wall structure, the cross section of the horizontal grouting layer is square, and the width of the horizontal grouting layer is the same as the thickness of the prefabricated shear wall 1; the horizontal grouting layer is connected between the upper layer and the lower layer of the shear wall boards, and the vertical height of the horizontal grouting layer is larger than L; the middle supporting structure comprises an I-steel 2-2 which is horizontally arranged, an upper rigid protection layer which is arranged right above the I-steel 2-2 and a lower rigid protection layer which is arranged right below the I-steel 2-2, the I-steel 2-2 is arranged along the length direction of the integral shear wall structure, and the upper rigid protection layer and the lower rigid protection layer are horizontally arranged and are both arranged along the length direction of the integral shear wall structure; the upper wing plate and the lower wing plate of the I-steel 2-2 are horizontally arranged and are both arranged along the length direction of the integral shear wall structure; the upper rigid protection layer comprises a plurality of upper steel cushion blocks 2-3 which are arranged on the same horizontal plane from front to back along the length direction of the integral shear wall structure, and the plurality of upper steel cushion blocks 2-3 are welded and fixed on the upper wing plate; the lower rigid protection layer comprises a plurality of lower steel cushion blocks 2-4 which are arranged on the same horizontal plane from front to back along the length direction of the integral shear wall structure, and the plurality of lower steel cushion blocks 2-4 are welded and fixed on the lower wing plate; the upper surface of the upper rigid protection layer and the bottom surface of the lower rigid protection layer are both horizontal planes, and the vertical distance between the upper surface of the upper rigid protection layer and the bottom surface of the lower rigid protection layer is not greater than the vertical height of the grouting structure 2-1; the lengths of the horizontal connecting structure 2 and the I-steel 2-2 are the same as the length of the integral shear wall structure;
The upper and lower adjacent layers of the shear wall plates in the integral shear wall structure comprise an upper layer of shear wall plates and a lower layer of shear wall plates positioned right below the upper layer of shear wall plates, the bottom sections of all vertical stress steel bars 1-3 in the upper layer of shear wall plates are poured into a grouting structure 2-1, and the upper sections of all vertical stress steel bars 1-3 in the lower layer of shear wall plates are poured into the grouting structure 2-1; the stress steel bar sets in the lower-layer shear wallboard are lower-layer stress steel bar sets, and the stress steel bar sets in the upper-layer shear wallboard are upper-layer stress steel bar sets; the upper layer stress steel bar groups are uniformly distributed right above each lower layer stress steel bar group in the upper and lower adjacent layers of the shear wall boards, each lower layer stress steel bar group and one upper layer stress steel bar group right above the lower layer stress steel bar group form a stress steel bar connection group, and four vertical stress steel bars 1-3 in each stress steel bar connection group are positioned on the same cross section of the integral shear wall structure;
the bottom section of each vertical stress steel bar 1-3 in the left steel bar framework of the upper-layer shear wallboard is an exposed section on the left side, and the bottom section of each vertical stress steel bar 1-3 in the right steel bar framework of the upper-layer shear wallboard is an exposed section on the right side; the upper section of each vertical stress steel bar 1-3 in the left steel bar framework of the lower-layer shear wallboard is a left lower-side exposed section, and the upper section of each vertical stress steel bar 1-3 in the right steel bar framework of the lower-layer shear wallboard is a right lower-side exposed section; the left upper exposed section and the left lower exposed section in each stress steel bar connecting group are lapped and welded into a whole, and the right upper exposed section and the right lower exposed section in each stress steel bar connecting group are lapped and welded into a whole.
Two longitudinal horizontal steel bars 1-2 which are symmetrically distributed left and right in the precast shear wall 1 are fastened and connected into a whole through a plurality of transverse horizontal steel bars 1-4 which are distributed on the same horizontal plane from front to back, wherein the transverse horizontal steel bars 1-4 are horizontally distributed and are vertically distributed with the longitudinal horizontal steel bars 1-2; the left end and the right end of each transverse horizontal steel bar 1-4 are connected to the joint between one vertical stress steel bar 1-3 and the longitudinal horizontal steel bar 1-2.
In this example, l=50cm.
During actual construction, the value of L can be correspondingly adjusted according to specific requirements.
In this embodiment, the vertical height of the grouting structure 2-1 is 5cm to 10cm greater than L. During actual construction, the vertical height of the grouting structure 2-1 can be correspondingly adjusted according to specific requirements.
In this embodiment, as shown in fig. 1, the left upper exposed section and the left lower exposed section in each of the stressed steel bar connection groups are connected to form a left steel bar connection structure, and the right upper exposed section and the right lower exposed section in each of the stressed steel bar connection groups are connected to form a right steel bar connection structure; the left steel bar connecting structure and the right steel bar connecting structure in each stressed steel bar connecting group are symmetrically distributed, and the middle supporting structure is arranged between the left steel bar connecting structure and the right steel bar connecting structure.
Referring to fig. 2, in this embodiment, the upper steel pad 2-3 and the lower steel pad 2-4 are both cube pads. During actual processing, the upper steel cushion block 2-3 and the lower steel cushion block 2-4 are simple and convenient to process and convenient to weld and fix, and can be directly, simply, conveniently and firmly welded and fixed on the I-steel 2-2.
Moreover, a plurality of upper steel cushion blocks 2-3 welded and fixed on the upper wing plate form a saw upper tooth wave-shaped shearing-resistant structure, so that on one hand, the upper part of the middle connecting structure is more firmly and reliably connected with the grouting structure 2-1 into a whole, the connection strength and the connection reliability of the middle connecting structure and the grouting structure 2-1 are improved, and the integrity of the horizontal connecting structure 2 is ensured; on the other hand, the connection strength and the shearing resistance between the horizontal connection structure 2 and the upper-layer shear wallboard can be effectively improved, the stress effect of the connection part between the horizontal connection structure 2 and the upper-layer shear wallboard is improved, and the integrity and the connection reliability of the horizontal connection structure 2 and the upper-layer shear wallboard are ensured.
Correspondingly, a plurality of lower steel cushion blocks 2-4 welded and fixed on the lower wing plate form a lower sawtooth waveform shear structure, on one hand, the lower part of the middle connecting structure is more firmly and reliably connected with the grouting structure 2-1 into a whole, the connection strength and the connection reliability of the middle connecting structure and the grouting structure 2-1 are improved, and the integrity of the horizontal connecting structure 2 is ensured; on the other hand, the connection strength and the shearing resistance between the horizontal connection structure 2 and the lower-layer shear wallboard can be effectively improved, the stress effect of the connection part between the horizontal connection structure 2 and the lower-layer shear wallboard is improved, and the integrity and the connection reliability of the horizontal connection structure 2 and the lower-layer shear wallboard are ensured.
The I-steel 2-2 in the middle connecting structure is simple in structure and low in input cost, the I-steel 2-2 is high in strength, the I-steel 2-2 arranged in the middle of the inner side of the horizontal connecting structure 2 is a common I-steel, the integrity, shearing resistance and stress effect of the horizontal connecting structure 2 can be effectively improved, the problems of dislocation, displacement, fracture and the like caused by shaking of an upper shearing wall and a lower shearing wall of the horizontal connecting structure 2 are avoided, and the service effect and the service life of the horizontal connecting structure 2 are ensured; meanwhile, the I-steel 2-2 has certain self-adaptive deformability, and as each stress steel bar connecting group of the upper and lower layer shear walls is welded and fixed into a whole after the left upper exposed section and the left lower exposed section are lapped, each stress steel bar connecting group is welded and fixed into a whole after the right upper exposed section and the right lower exposed section are lapped, the left steel bar connecting structure and the right steel bar connecting structure have certain self-adaptive deformability, so that the horizontal connecting structure 2 has certain self-adaptive deformability, the ductility and the service life of the horizontal connecting structure 2 can be effectively improved, the stress performance and the service effect of the integral shear wall structure are further improved, the connecting quality, the bearing capacity and the ductility and the durability of the connecting part between the upper and lower layer shear walls are substantially improved, and a heavy anti-seismic measure is provided on the basis of connecting the vertical stress steel bar 1-3 with the grouting structure 2-1, and the service life of the integral shear wall structure can be further ensured by the middle connecting structure.
The upper left exposed section and the lower left exposed section in each stress steel bar connecting group are lapped and then welded and fixed into a whole, the upper right exposed section and the lower right exposed section in each stress steel bar connecting group are lapped and then welded and fixed into a whole, so that the stress steel bars are connected simply and reliably, the connection quality is easy to ensure, the stress performance of the vertical stress steel bar connecting part can be effectively ensured, only the lapped vertical stress steel bars 1-3 are welded and fixed into a whole, the lapped upper and lower vertical stress steel bars 1-3 are directly connected into a whole, the vertical stress transmission is more direct and reliable, and the connection reliability and the stress performance between the upper and lower layers of the shear wall can be further improved. In addition, compare with traditional steel bar connecting sleeve, construction process is more simple and convenient, only need with overlap joint vertical atress reinforcing bar 1-3 welded fastening as an organic whole can, can avoid simultaneously that sleeve joint quality that steel bar connecting sleeve exists is difficult for guaranteeing, closely knit difficult assurance, the poor scheduling problem of steel bar connection quality.
During actual construction, the upper steel cushion block 2-3 and the lower steel cushion block 2-4 are horizontally arranged, and the upper steel cushion block 2-3 and the lower steel cushion block 2-4 are arranged along the thickness direction of the integral shear wall structure.
In this embodiment, the upper wing plate and the lower wing plate of the i-steel 2-2 are symmetrically arranged, the structures and the dimensions of all lower steel cushion blocks 2-4 in the lower rigid protection layer are the same, the structures and the dimensions of all upper steel cushion blocks 2-3 in the upper rigid protection layer are the same, and the structures and the dimensions of the upper steel cushion blocks 2-3 and the lower steel cushion blocks 2-4 are the same; the plurality of lower steel cushion blocks 2-4 in the lower rigid protection layer are uniformly distributed, and the plurality of upper steel cushion blocks 2-3 in the upper rigid protection layer are uniformly distributed;
the left side walls of the upper steel cushion block 2-3 and the lower steel cushion block 2-4 are flush with the left side wall of the upper wing plate of the connected I-steel 2-2, and the right side walls of the upper steel cushion block 2-3 and the lower steel cushion block 2-4 are flush with the right side wall of the upper wing plate of the connected I-steel 2-2.
During actual processing, the middle supporting structure is processed in advance in a factory, so that the processing is simple and convenient, the processing quality can be effectively ensured, only the installation is needed on site, the site construction efficiency can be effectively improved, the site construction difficulty is reduced, and the construction period is shortened.
The distance between the front and rear adjacent two upper steel cushion blocks 2-3 in the upper rigid protection layer is the same as the distance between the front and rear adjacent two lower steel cushion blocks 2-4 in the lower rigid protection layer, and one lower steel cushion block 2-4 is arranged under each upper steel cushion block 2-3 in the upper rigid protection layer; the distance between the front and rear adjacent upper steel cushion blocks 2-3 in the upper rigid protective layer is 250-350 mm, the front and rear width of the upper steel cushion blocks 2-3 is D, the value range of D is 150-180 mm, and the thickness of the upper steel cushion blocks 2-3 is 50-80 mm. In this embodiment, the distance between two adjacent upper steel pads 2-3 in the upper rigid protection layer is 300mm, d=160 mm, and the thickness of the upper steel pad 2-3 is 60mm. During actual processing, the distance between the front and rear adjacent upper steel cushion blocks 2-3 in the upper rigid protective layer, the thickness of the upper steel cushion blocks 2-3 and the value of D can be respectively and correspondingly adjusted according to specific requirements.
In the actual use process, the upper steel cushion block 2-3 and the lower steel cushion block 2-4 play a role in enhancing the shearing resistance, and meanwhile, the upper steel cushion block 2-3 and the lower steel cushion block 2-4 can protect and strengthen the I-steel 2-2, so that the strength and the stress effect of the I-steel 2-2 are further enhanced.
In this embodiment, the lateral width of the upper steel pad 2-3 is the same as the width of the upper wing plate, and the width of the upper wing plate is 5cm. During actual construction, the transverse widths of the upper wing plate, the lower wing plate, the upper steel cushion block 2-3 and the lower steel cushion block 2-4 can be respectively and correspondingly adjusted according to specific requirements.
In order to further improve the connection effect between the grouting structure 2-1 and the concrete wall 1-1 in the upper-layer shear wallboard, improve the integrity and stress effect of the grouting structure 2-1 and the concrete wall 1-1 in the upper-layer shear wallboard, and simultaneously improve the connection effect between the grouting structure 2-1 and the concrete wall 1-1 in the lower-layer shear wallboard, improve the integrity and stress effect of the grouting structure 2-1 and the concrete wall 1-1 in the lower-layer shear wallboard, the bottom surface of the lower steel cushion block 2-4 is higher than the bottom surface of the grouting structure 2-1, and the upper surface of the upper steel cushion block 2-3 is lower than the upper surface of the grouting structure 2-1; the vertical distance between the bottom surface of the lower steel cushion block 2-4 and the bottom surface of the grouting structure 2-1 where the lower steel cushion block is positioned and the vertical distance between the upper surface of the upper steel cushion block 2-3 and the upper surface of the grouting structure 2-1 where the upper steel cushion block is positioned are not more than 1cm. At this time, a grouting material cushion layer is arranged between the lower steel cushion block 2-4 and the concrete wall body 1-1 below the lower steel cushion block and between the upper steel cushion block 2-3 and the concrete wall body 1-1 above the upper steel cushion block.
In actual construction, the bottom surface of the lower steel cushion block 2-4 can be flush with the bottom surface of the grouting structure 2-1 where the lower steel cushion block is located, and the upper surface of the upper steel cushion block 2-3 can be flush with the upper surface of the grouting structure 2-1 where the upper steel cushion block is located.
In this embodiment, the vertical height of the middle support structure is the same as the vertical height of the grouting structure 2-1 in which it is located. And the bottom surface of the lower steel cushion block 2-4 is flush with the bottom surface of the grouting structure 2-1 where the lower steel cushion block is positioned, and the upper surface of the upper steel cushion block 2-3 is flush with the upper surface of the grouting structure 2-1 where the upper steel cushion block is positioned. Therefore, the installation of the intermediate support structure is very simple in practical construction.
In order to further improve the shearing effect and the stress performance of the I-steel 2-2, as shown in fig. 1, a web plate of the I-steel 2-2 is vertically arranged, and a plurality of shearing resistant groups which are horizontally arranged are arranged on the web plate from top to bottom; each shear group comprises two rows of shear members 2-5 symmetrically arranged on the left side and the right side of the web, each row of shear members 2-5 comprises a plurality of shear members 2-5 which are arranged on the same horizontal plane from front to back along the length direction of the web, and each shear member 2-5 is horizontally arranged and vertically arranged with the web.
In this embodiment, the shear members 2-5 are shear studs welded to the web.
In actual use, the shearing resistant member 2-5 may be other types of shearing resistant members, such as horizontal steel bars.
In this embodiment, the web is provided with an upper shearing group and a lower shearing group, and the two shearing groups are symmetrically arranged between the upper wing plate and the lower wing plate.
A plurality of shearing resistant members 2-5 in each row of shearing resistant members 2-5 are uniformly distributed, and the distance between two adjacent shearing resistant members 2-5 in front and back is 180-220 mm. In this embodiment, the distance between two adjacent front and rear shear members 2-5 is 200mm.
During actual construction, the number of the shearing resistant groups arranged on the web plate, the arrangement positions of the shearing resistant groups and the spacing between the front and rear adjacent shearing resistant pieces 2-5 can be respectively adjusted according to specific requirements, the use mode is flexible, and the processing and the manufacturing are simple and convenient.
The construction method of the assembled shear wall structure shown in fig. 3 comprises the following steps of respectively installing a plurality of layers of shear wall plates from bottom to top:
step one, mounting a bottom layer shear wallboard: hoisting the bottom-layer shear wall boards of the multi-layer shear wall boards in place by adopting hoisting equipment, and completing the installation process of the bottom-layer shear wall boards;
The bottom layer of the shear wallboard is one layer of the shear wallboard at the bottommost part of the plurality of layers of the shear wallboards;
step two, mounting a shear wallboard at the upper layer, wherein the process is as follows:
step 201, hoisting a middle supporting structure: before the upper layer of the shear wall board is hoisted, hoisting the middle supporting structure in place by adopting hoisting equipment, and enabling the hoisted middle supporting structure to be positioned right above the upper shear wall board;
the upper layer of the shear wallboard is a currently installed shear wallboard, and the upper shear wallboard is a layer of the shear wallboard which is positioned below the currently installed shear wallboard and adjacent to the currently installed shear wallboard in the integral shear wall structure; the currently installed shear wallboard is the upper layer shear wallboard, and the upper layer shear wallboard is the lower layer shear wallboard which is installed completely;
step 202, hoisting a shear wallboard: hoisting the currently installed shear wall panel into place by using the hoisting equipment, and positioning the currently installed shear wall panel directly above the middle supporting structure in step 201;
step 203, steel bar connection: welding and fixing the left upper exposed section and the left lower exposed section of each stressed steel bar connecting group in the current installed shear wallboard and the upper shear wallboard into a whole by adopting welding equipment, and simultaneously welding and fixing the right upper exposed section and the right lower exposed section of each stressed steel bar connecting group in the current installed shear wallboard and the upper shear wallboard into a whole by adopting welding equipment;
Step 204, supporting a molding template: erecting a forming template for constructing the grouting structure 2-1 at the joint between the currently installed shear wallboard and the upper shear wallboard;
the molding template comprises a left vertical side template and a right vertical side template which are symmetrically distributed, wherein the vertical side template is a straight template which is vertically distributed and is distributed along the length direction of the integral shear wall structure;
step 205, grouting: pouring grouting material into the forming templates in the step 204 to obtain a grouting structure 2-1 connected between the currently installed shear wallboard and the upper shear wallboard, pouring the middle supporting structure in the step 201 into the grouting structure 2-1, and pouring the left upper exposed section, the left lower exposed section, the right upper exposed section and the right lower exposed section of each stressed steel bar connecting group in the step 203 into the grouting structure 2-1 to obtain a horizontal connecting structure 2 for construction forming; after the grouting material is solidified, finishing the installation process of the currently installed shear wallboard;
thirdly, judging the construction completion of the integral shear wall structure: judging whether all the shear wallboards in the integral shear wall structure are installed or not, and completing the construction process of the integral shear wall structure after judging that a plurality of layers of the shear wallboards in the integral shear wall structure are installed; otherwise, returning to the step two.
In step 205, the grouting material is a high-strength non-shrinkage grouting material, so that the connection strength and the connection effect between the upper and lower layers of shear wallboards can be effectively improved. And the high-strength shrinkage-free grouting material is only required to be maintained for 1 day after being poured, so that the actual construction is simple and convenient, and the construction period can be greatly shortened.
In this embodiment, the middle support structure is suspended and supported on the upper shear wall panel during the middle support structure suspending in step 201. Accordingly, when the shear wall panel lifting is performed in step 202, the currently installed shear wall panel is lifted and supported on the middle support structure in step 201. Therefore, the practical construction is simple and convenient, and the construction process is safe and reliable.
In this embodiment, the high-strength non-shrinkage grouting material is a high-strength non-shrinkage cement-based grouting material.
The high-strength non-shrinkage cement-based grouting material is a dry-mixed material which is prepared by taking cement as a base material, adding a proper amount of natural high-strength aggregate, concrete admixture and the like, and has the characteristics of high fluidity, early strength, high strength, micro-expansion and the like after being mixed by adding water.
In step 205, after grouting material is poured into the molding template, the grouting structure 2-1 is also required to be maintained for 1-2 days. In this example, the curing time was 1 day.
In this embodiment, one layer of the shear wall boards at the bottommost among the multiple layers of the shear wall boards is a bottom shear steel plate;
the bottom shear steel plate is supported on a horizontal supporting structure, the horizontal supporting structure is a reinforced concrete beam or a reinforced concrete foundation, and the bottom sections of all the vertical stress steel bars 1-3 in the bottom shear steel plate are fixed in the horizontal supporting structure;
during actual construction, before the bottom shear wall plate is installed in the first step, measuring and paying-off are carried out on the construction position of the integral shear wall structure.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.

Claims (7)

1. An assembled shear wall structure, its characterized in that: the integrated shear wall structure is formed by connecting a plurality of layers of shear wall boards from top to bottom, wherein the structures of the plurality of layers of shear wall boards are identical and are uniformly distributed on the same vertical surface, the thicknesses of the plurality of layers of shear wall boards are identical, and the integrated shear wall structure is a rectangular wall body;
Each layer of shear wall board is vertically distributed and is a prefabricated shear wall (1), and each prefabricated shear wall (1) is a rectangular wall body horizontally distributed; each precast shear wall (1) comprises a concrete wall body (1-1) and an internal supporting framework poured into the concrete wall body (1-1); the inner supporting framework comprises a left vertical steel bar framework and a right vertical steel bar framework which are symmetrically distributed, the two vertical steel bar frameworks are distributed in parallel, and the two vertical steel bar frameworks are distributed along the length direction of the prefabricated shear wall (1); each vertical reinforcement framework is formed by connecting N vertical stress reinforcements (1-3) which are vertically distributed and a plurality of longitudinal horizontal reinforcements (1-2) which are vertically distributed on the same vertical surface from bottom to top, and the plurality of vertical stress reinforcements (1-3) are distributed on the same vertical surface from front to back along the length direction of the prefabricated shear wall (1); each longitudinal horizontal steel bar (1-2) in the vertical steel bar framework is fixedly connected with a plurality of vertical stress steel bars (1-3) into a whole; wherein N is a positive integer and N is more than or equal to 5; the bottom section of each vertical stress steel bar (1-3) in the precast shear wall (1) extends to the lower part of the concrete wall (1-1), the upper section of each vertical stress steel bar (1-3) extends to the upper part of the concrete wall (1-1), the bottom section and the upper section are steel bar exposed sections, the length of each steel bar exposed section is L, and the value range of L is 40 cm-60 cm;
Two vertical stress steel bars (1-3) which are symmetrically distributed in the left and right of the precast shear wall (1) form a stress steel bar group, and each stress steel bar group is positioned on one cross section of the precast shear wall (1); the vertical steel reinforcement framework positioned on the left side in the prefabricated shear wall (1) is a left steel reinforcement framework, and the vertical steel reinforcement framework positioned on the right side in the prefabricated shear wall (1) is a right steel reinforcement framework;
the prefabricated shear wall (1) is an external reinforced steel bar shear wall or an internal reinforced steel bar shear wall, the external reinforced steel bar shear wall and the internal reinforced steel bar shear wall in the integral shear wall structure are distributed in a staggered manner, and the horizontal spacing between two adjacent vertical stress reinforced steel bars (1-3) in front and back in all vertical reinforcement frameworks of the integral shear wall structure is the same; the distance between the left and right vertical reinforcement cages in the reinforcement external shear wall is larger than the distance between the left and right vertical reinforcement cages in the reinforcement internal shear wall, the horizontal distance between the left side wall of the left reinforcement cage and the right side wall of the right reinforcement cage in the reinforcement internal shear wall is d, and the clear distance between the left and right vertical reinforcement cages in the reinforcement external shear wall is the same as d;
The upper and lower adjacent layers of the shear wallboards in the integral shear wall structure are connected through a horizontal connecting structure (2), and the horizontal connecting structure (2) is distributed along the length direction of the integral shear wall structure; the horizontal connecting structure (2) comprises a grouting structure (2-1) formed by pouring grouting materials poured between two adjacent layers of the shear wall boards, and a middle supporting structure poured in the middle of the inner side of the grouting structure (2-1), wherein the grouting structure (2-1) is horizontally arranged and is a horizontal grouting layer arranged along the length direction of the integral shear wall structure, the cross section of the horizontal grouting layer is square, and the width of the horizontal grouting layer is the same as the thickness of the prefabricated shear wall (1); the horizontal grouting layer is connected between the upper layer and the lower layer of the shear wall boards, and the vertical height of the horizontal grouting layer is larger than L; the middle supporting structure comprises an I-steel (2-2) which is horizontally arranged, an upper rigid protection layer which is arranged right above the I-steel (2-2) and a lower rigid protection layer which is arranged right below the I-steel (2-2), the I-steel (2-2) is arranged along the length direction of the integral shear wall structure, and the upper rigid protection layer and the lower rigid protection layer are horizontally arranged and are both arranged along the length direction of the integral shear wall structure; the upper wing plate and the lower wing plate of the I-steel (2-2) are horizontally arranged and are both arranged along the length direction of the integral shear wall structure; the upper rigid protection layer comprises a plurality of upper steel cushion blocks (2-3) which are arranged on the same horizontal plane from front to back along the length direction of the integral shear wall structure, and the plurality of upper steel cushion blocks (2-3) are welded and fixed on the upper wing plate; the lower rigid protection layer comprises a plurality of lower steel cushion blocks (2-4) which are arranged on the same horizontal plane from front to back along the length direction of the integral shear wall structure, and the plurality of lower steel cushion blocks (2-4) are welded and fixed on the lower wing plate; the upper surface of the upper rigid protection layer and the bottom surface of the lower rigid protection layer are both horizontal planes, and the vertical distance between the upper surface of the upper rigid protection layer and the bottom surface of the lower rigid protection layer is not greater than the vertical height of the grouting structure (2-1); the lengths of the horizontal connecting structure (2) and the I-steel (2-2) are the same as the length of the integral shear wall structure;
The upper and lower adjacent layers of the shear wall plates in the integral shear wall structure comprise an upper layer of shear wall plates and a lower layer of shear wall plates positioned right below the upper layer of shear wall plates, the bottom sections of all vertical stress steel bars (1-3) in the upper layer of shear wall plates are poured in a grouting structure (2-1), and the upper sections of all vertical stress steel bars (1-3) in the lower layer of shear wall plates are poured in the grouting structure (2-1); the stress steel bar sets in the lower-layer shear wallboard are lower-layer stress steel bar sets, and the stress steel bar sets in the upper-layer shear wallboard are upper-layer stress steel bar sets; the upper layer stress steel bar groups are uniformly distributed right above each lower layer stress steel bar group in the upper and lower adjacent layers of the shear wall boards, each lower layer stress steel bar group and one upper layer stress steel bar group right above the lower layer stress steel bar group form a stress steel bar connection group, and four vertical stress steel bars (1-3) in each stress steel bar connection group are positioned on the same cross section of the integral shear wall structure;
the bottom section of each vertical stress steel bar (1-3) in the left steel bar framework of the upper-layer shear wallboard is an exposed section on the left upper side, and the bottom section of each vertical stress steel bar (1-3) in the right steel bar framework of the upper-layer shear wallboard is an exposed section on the right upper side; the upper section of each vertical stress steel bar (1-3) in the left steel bar framework of the lower-layer shear wallboard is a left lower-side exposed section, and the upper section of each vertical stress steel bar (1-3) in the right steel bar framework of the lower-layer shear wallboard is a right lower-side exposed section; the left upper exposed section and the left lower exposed section in each stress steel bar connecting group are overlapped and welded together, and the right upper exposed section and the right lower exposed section in each stress steel bar connecting group are overlapped and welded together;
The left upper exposed section and the left lower exposed section in each stressed steel bar connecting group are connected to form a left steel bar connecting structure, and the right upper exposed section and the right lower exposed section in each stressed steel bar connecting group are connected to form a right steel bar connecting structure; the left steel bar connecting structure and the right steel bar connecting structure in each stressed steel bar connecting group are symmetrically distributed, and the middle supporting structure is arranged between the left steel bar connecting structure and the right steel bar connecting structure;
the upper steel cushion block (2-3) and the lower steel cushion block (2-4) are both cube cushion blocks;
the web plate of the I-steel (2-2) is vertically arranged, and a plurality of shearing resistant groups which are horizontally arranged are arranged on the web plate from top to bottom; each shear resistant group comprises two rows of shear resistant pieces (2-5) symmetrically arranged on the left side and the right side of the web, each row of shear resistant pieces (2-5) comprises a plurality of shear resistant pieces (2-5) which are arranged on the same horizontal plane from front to back along the length direction of the web, and each shear resistant piece (2-5) is horizontally arranged and vertically arranged with the web.
2. A fabricated shear wall structure according to claim 1, wherein: the upper steel cushion block (2-3) and the lower steel cushion block (2-4) are horizontally arranged, and the upper steel cushion block (2-3) and the lower steel cushion block (2-4) are arranged along the thickness direction of the integral shear wall structure.
3. A fabricated shear wall structure according to claim 2, wherein: the upper wing plates and the lower wing plates of the I-steel (2-2) are symmetrically arranged, the structures and the sizes of all lower steel cushion blocks (2-4) in the lower rigid protection layer are the same, the structures and the sizes of all upper steel cushion blocks (2-3) in the upper rigid protection layer are the same, and the structures and the sizes of the upper steel cushion blocks (2-3) and the lower steel cushion blocks (2-4) are the same; a plurality of lower steel cushion blocks (2-4) in the lower rigid protection layer are uniformly distributed, and a plurality of upper steel cushion blocks (2-3) in the upper rigid protection layer are uniformly distributed;
the left side walls of the upper steel cushion block (2-3) and the lower steel cushion block (2-4) are flush with the left side wall of the upper wing plate of the connected I-steel (2-2), and the right side walls of the upper steel cushion block (2-3) and the lower steel cushion block (2-4) are flush with the right side wall of the upper wing plate of the connected I-steel (2-2).
4. A fabricated shear wall structure according to claim 3, wherein: the distance between the front and rear adjacent two upper steel cushion blocks (2-3) in the upper rigid protection layer is the same as the distance between the front and rear adjacent two lower steel cushion blocks (2-4) in the lower rigid protection layer, and one lower steel cushion block (2-4) is arranged under each upper steel cushion block (2-3) in the upper rigid protection layer; the distance between the front and rear adjacent steel-feeding cushion blocks (2-3) in the upper rigid protective layer is 250-350 mm, the front and rear width of the steel-feeding cushion blocks (2-3) is D, the value range of D is 150-180 mm, and the thickness of the steel-feeding cushion blocks (2-3) is 50-80 mm.
5. A fabricated shear wall structure according to claim 3, wherein: the bottom surface of the lower steel cushion block (2-4) is higher than the bottom surface of the grouting structure (2-1), and the upper surface of the upper steel cushion block (2-3) is lower than the upper surface of the grouting structure (2-1); the vertical distance between the bottom surface of the lower steel cushion block (2-4) and the bottom surface of the grouting structure (2-1) where the lower steel cushion block is positioned and the vertical distance between the upper surface of the upper steel cushion block (2-3) and the upper surface of the grouting structure (2-1) where the upper steel cushion block is positioned are not more than 1cm.
6. A method of constructing the fabricated shear wall structure of claim 1, wherein: and respectively installing a plurality of layers of the shear wallboards from bottom to top, wherein the process is as follows:
step one, mounting a bottom layer shear wallboard: hoisting the bottom-layer shear wall boards of the multi-layer shear wall boards in place by adopting hoisting equipment, and completing the installation process of the bottom-layer shear wall boards;
the bottom layer of the shear wallboard is one layer of the shear wallboard at the bottommost part of the plurality of layers of the shear wallboards;
step two, mounting a shear wallboard at the upper layer, wherein the process is as follows:
step 201, hoisting a middle supporting structure: before the upper layer of the shear wall board is hoisted, hoisting the middle supporting structure in place by adopting hoisting equipment, and enabling the hoisted middle supporting structure to be positioned right above the upper shear wall board;
The upper layer of the shear wallboard is a currently installed shear wallboard, and the upper shear wallboard is a layer of the shear wallboard which is positioned below the currently installed shear wallboard and adjacent to the currently installed shear wallboard in the integral shear wall structure; the currently installed shear wallboard is the upper layer shear wallboard, and the upper layer shear wallboard is the lower layer shear wallboard which is installed completely;
step 202, hoisting a shear wallboard: hoisting the currently installed shear wall panel into place by using the hoisting equipment, and positioning the currently installed shear wall panel directly above the middle supporting structure in step 201;
step 203, steel bar connection: welding and fixing the left upper exposed section and the left lower exposed section of each stressed steel bar connecting group in the current installed shear wallboard and the upper shear wallboard into a whole by adopting welding equipment, and simultaneously welding and fixing the right upper exposed section and the right lower exposed section of each stressed steel bar connecting group in the current installed shear wallboard and the upper shear wallboard into a whole by adopting welding equipment;
step 204, supporting a molding template: erecting a forming template for constructing a grouting structure (2-1) at the joint between the currently installed shear wallboard and the upper shear wallboard;
The molding template comprises a left vertical side template and a right vertical side template which are symmetrically distributed, wherein the vertical side template is a straight template which is vertically distributed and is distributed along the length direction of the integral shear wall structure;
step 205, grouting: pouring grouting material into the forming template in the step 204 to obtain a grouting structure (2-1) connected between the currently installed shear wallboard and the upper shear wallboard, pouring the middle supporting structure in the step 201 into the grouting structure (2-1), and pouring the left upper exposed section, the left lower exposed section, the right upper exposed section and the right lower exposed section of each stressed steel bar connecting group in the step 203 into the grouting structure (2-1) to obtain a horizontal connecting structure (2) for construction forming; after the grouting material is solidified, finishing the installation process of the currently installed shear wallboard;
thirdly, judging the construction completion of the integral shear wall structure: judging whether all the shear wallboards in the integral shear wall structure are installed or not, and completing the construction process of the integral shear wall structure after judging that a plurality of layers of the shear wallboards in the integral shear wall structure are installed; otherwise, returning to the step two.
7. The method of claim 6, wherein: in step 205, after grouting material is poured into the molding template, the grouting structure (2-1) is also required to be maintained for 1-2 days.
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CN107989228A (en) * 2017-12-20 2018-05-04 中冶建筑研究总院有限公司 A kind of prefabricated steel reinforced concrete shear wall structure and its preparation and installation method
CN209227836U (en) * 2018-11-09 2019-08-09 沈阳建筑大学 Prefabricated concrete structure wall-column all steel is keyed structure

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CN103924711A (en) * 2014-05-01 2014-07-16 西安科技大学 Assembled type gridding shearing wall structural system and construction technology of assembled type gridding shearing wall structural system
CN104763082A (en) * 2015-03-26 2015-07-08 天津大学建筑设计研究院 Upper and lower connecting structure of assembled shearing force wall
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