阅读说明：本技术 内藏型钢的装配式双面叠合剪力墙 (Built-in profile steel assembled double-side superposed shear wall ) 是由 粟俊富 吴边 张良 施维 张凤亮 董浩 敖凌宇 刘芝伟 蒙祖泉 于 2020-12-31 设计创作，主要内容包括：本发明公开了一种内藏型钢的装配式双面叠合剪力墙,包括两块叶板,两块叶板通过型钢连接,型钢的横截面呈H形,H形的四个端点和叶板中的钢筋连接,型钢纵向布置在叶板中并从叶板的上下两端露出。本发明创新性地提出了以钢管混凝土为核心的钢-混凝土组合结构作为约束剪力墙的边缘构件,该新型结构抗侧力体系,克服了传统钢筋混凝土剪力墙边缘构件无法装配式施工的技术缺陷。创新性地发明了一种制作、安装简便,受力合理的竖向接缝构造形式；预制的构件定位完成后,只需要非常少量现场后浇混凝土,即可完成构件的安装。(The invention discloses an assembled double-sided superposed shear wall with built-in profile steel, which comprises two leaf plates, wherein the two leaf plates are connected through the profile steel, the cross section of the profile steel is H-shaped, four end points of the H-shaped profile steel are connected with steel bars in the leaf plates, and the profile steel is longitudinally arranged in the leaf plates and is exposed from the upper end and the lower end of the leaf plates. The invention innovatively provides a steel-concrete combined structure taking concrete filled steel tubes as a core as an edge member of a constraint shear wall, and the novel structural lateral force resisting system overcomes the technical defect that the edge member of the traditional reinforced concrete shear wall cannot be constructed in an assembly mode. The invention innovatively provides a vertical joint structure form which is simple and convenient to manufacture and install and reasonable in stress; after the prefabricated components are positioned, only a small amount of on-site post-cast concrete is needed, and the components can be installed.)

1. The utility model provides a two-sided superimposed shear wall of assembled of built-in shaped steel, includes two leaf boards, its characterized in that: the two leaf plates are connected through section steel, the cross section of the section steel is H-shaped, four end points of the H shape are connected with the steel bars in the leaf plates, and the section steel is longitudinally arranged in the leaf plates and exposed out of the upper ends and the lower ends of the leaf plates.

2. The built-in steel type fabricated double-sided laminated shear wall of claim 1, wherein: two rows of studs are respectively arranged on two sides of the H-shaped steel.

3. The built-in steel type fabricated double-sided laminated shear wall of claim 2, wherein: and positioning angle steels are arranged at four contact points of the profile steel and the transverse steel bars in the blade plate.

4. The built-in steel type fabricated double-sided laminated shear wall of claim 3, wherein: the framework of the blade plate is of a grid structure formed by transverse steel bars and longitudinal steel bars, profile steel is arranged on every two grids in the transverse direction, four contact points of each profile steel and the transverse steel bars are located on the longitudinal central line of each grid, and the longitudinal steel bars do not extend out of the blade plate.

5. The built-in steel type fabricated double-sided laminated shear wall of claim 1, wherein: the section steel can be C-shaped steel, angle steel or steel pipe.

6. The built-in steel type assembled double-sided superposed shear wall according to any one of claims 1 to 5, characterized in that: the upper shear wall and the lower shear wall are fixedly connected through section steel when in butt joint, and the upper section steel and the lower section steel are connected through welding, bolts or flanges.

7. The built-in steel type fabricated double-sided laminated shear wall of claim 6, wherein: the end part of the superposed shear wall extends into a side surface of the square steel tube column and a mounting groove formed by the two guard plates, a row of studs are arranged along the side surface of the square steel tube, the end parts of the two leaf plates of the superposed shear wall are provided with transversely extending reinforcing steel bars, concrete is filled in the square steel tube, and concrete is filled between the two guard plates and the superposed shear wall.

8. The superposed shear wall mounting structure of claim 7, wherein: four sides of the square steel pipe can be provided with two guard plates according to requirements and are used for fixing one, two, three or four superposed shear walls.

9. The superposed shear wall mounting structure of claim 8, wherein: the side of the square steel pipe is welded with a U-shaped steel to form a rectangular compartment, and then two guard plates and a middle stud are welded, and the end part of the transverse extending steel bar is provided with a mechanical anchoring joint.

10. The superposed shear wall mounting structure of claim, wherein: firstly, placing a framework of the shear wall in a leaf plate template for concrete pouring, pouring concrete in the other template after solidification, inversely inserting a forming part into the template, and fixing the template after the concrete is formed to obtain the superposed shear wall; and (3) transporting the formed shear wall to a site for installation, installing square steel pipes on two sides of the shear wall, sealing a gap between the leaf plate and the guard plate by using a sealing material after the installation is finished, and pouring concrete into the square steel pipes and the shear wall.

Technical Field

The invention relates to a structure of a superposed shear wall.

Background

The invention aims at the shear wall structure system which always occupies an important position in the building market of China, and the main technical system for assembling the integral shear wall structure at present can be divided into a sleeve grouting connection system, a slurry anchor lap joint connection system, a superposed shear wall structure system and the like. The sleeve grouting connection system and the grout anchor lap joint connection system are from different vertical steel bar connection technical routes, but all require the accurate positioning and grouting operation process of steel bars in the field assembly and installation process, the precision requirement on the installation and positioning is very high, simultaneously, the grouting operation belongs to hidden engineering, currently, effective field quality acceptance means is lacked, and the potential safety hazard and the risk of the structure exist. Due to the technical defects, the two technical systems are applied to high-intensity areas and high-rise shear wall structures very rarely.

The superposed shear wall structure system has wide application in the field of assembly type buildings in European and American developed countries represented by Germany, and has a complete whole-process industrial chain of standard, research and development, design, production, assembly and installation, maintenance and detection and the like. After the introduction of the superimposed shear wall system into China, through the rapid development in recent years, a complete industrial chain has been formed and is applied to the assembly type residential engineering in a plurality of regions nationwide, such as Shanghai and Zhejiang. The system mainly adopts the on-site post-cast strip to realize the connection of the vertical steel bars of the shear wall, and has wide popularization and application prospects at present. The invention follows the common understanding in the industry of developing and assembling integral buildings in China, namely the concept of 'equal cast-in-place', aims at developing an assembled residential structure system which accords with the national conditions of China, and improves the technical system of the superposed shear wall structure based on the concept.

The traditional superposed shear wall is adopted, because the vertical steel bars of the wall body need to bear the transmission of the tensile stress and the shear stress in the wall body, the vertical steel bars need to be effectively connected at the horizontal joint, the wall body is limited by a post-pouring working surface, the steel bar stress can be indirectly transmitted only by adopting a steel bar inserting method at present, the force transmission effect is poorer than that of direct connection, and the extra steel consumption is increased. The method is limited by the production process flow, and at present, all the superposed shear walls need to be provided with lattice type steel bar trusses, but the steel bar trusses cannot effectively connect in the assembling construction process and cannot exert the stress effect, so that the greater steel bar waste is caused, and the steel consumption is increased invisibly.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: aiming at the problems existing in the interconnection of the superposed shear walls, the superposed shear wall with the built-in steel is provided to meet the connection requirements of an upper shear wall and a lower shear wall, and the constraint structures on two sides of the shear wall are also designed.

The technical scheme of the invention is as follows:

the utility model provides a two-sided superimposed shear wall of assembled of built-in shaped steel, includes two acanthus leaf, and two acanthus leaf pass through shaped steel and connect, and the cross section of shaped steel is the H shape, and four extreme points of H shape and the reinforcing bar in the acanthus leaf are connected, and shaped steel longitudinal arrangement is in the acanthus leaf and is exposed from the upper and lower both ends of acanthus leaf.

Two rows of studs are respectively arranged on two sides of the H-shaped steel.

And positioning angle steels are arranged at four contact points of the profile steel and the transverse steel bars in the blade plate.

The framework of the blade plate is of a grid structure formed by transverse steel bars and longitudinal steel bars, profile steel is arranged on every two grids in the transverse direction, four contact points of each profile steel and the transverse steel bars are located on the longitudinal central line of each grid, and the longitudinal steel bars do not extend out of the blade plate.

The upper shear wall and the lower shear wall are fixedly connected through the section steel when in butt joint. The upper section steel and the lower section steel are connected by welding, bolts or flanges.

The utility model provides a superimposed shear wall mounting structure, includes superimposed shear wall, and superimposed shear wall tip stretches into in the mounting groove that a side of square steel tube stand and two backplate constitute, arranges one row of toggle bolt along the square steel tube side, and two leaf plate tip of superimposed shear wall have the reinforcing bar of transversely stretching out, and the packing concrete in the square steel tube is between two backplate and the superimposed shear wall filled concrete.

Four sides of the square steel pipe can be provided with two guard plates according to requirements and are used for fixing one, two, three or four superposed shear walls.

The side of the square steel pipe is welded with a U-shaped steel to form a rectangular compartment, and then two guard plates and a middle stud are welded.

And the end part of the transverse extending steel bar is provided with a mechanical anchoring joint.

Firstly, placing a framework of the shear wall in a leaf plate template for concrete pouring, pouring concrete in the other template after solidification, inversely inserting a forming part into the template, and fixing the template after the concrete is formed to obtain the superposed shear wall; and (3) transporting the formed shear wall to a site for installation, installing square steel pipes on two sides of the shear wall, sealing a gap between the leaf plate and the guard plate by using a sealing material after the installation is finished, and pouring concrete into the square steel pipes and the shear wall.

The invention has the beneficial effects that: the invention innovatively provides that the section steel members are arranged in the double-sided overlapped wallboard, lattice type steel bar trusses are replaced in the member production process, and meanwhile, the section steel members realize the connection of an upper layer and a lower layer through horizontal seams on site to replace vertical steel bars, so that the effect of transferring the stress of the wall body is achieved.

The invention innovatively provides a steel-concrete combined structure taking concrete filled steel tubes as a core as an edge member of a constraint shear wall, and the novel structural lateral force resisting system overcomes the technical defect that the edge member of the traditional reinforced concrete shear wall cannot be constructed in an assembly mode. The invention innovatively provides a vertical joint structure form which is simple and convenient to manufacture and install and reasonable in stress; after the prefabricated components are positioned, only a small amount of on-site post-cast concrete is needed, and the components can be installed.

The assembled integral built-in profile steel double-sided superposed shear wall further develops a superposed shear wall structure system. After the section steel components are introduced, a novel structural side force resisting system of the assembled integral type built-in section steel double-sided superposed shear wall is formed. Because the vertical stressed steel bars are changed into the vertical distributed steel bars, the reinforcement ratio of the vertical steel bars is reduced, and the lattice type steel bar truss is cancelled, although the section steel component is introduced, the total steel consumption is not increased greatly.

A large number of researches and engineering practices show that the overall working performance of the reasonably designed steel-concrete combined structural member is obviously superior to the simple superposition of the performances of the steel-concrete combined structural member. Compared with the traditional superposed shear wall, the system can greatly improve the bending mechanical property and the elastic-plastic deformation property of the shear wall under the condition of not obviously increasing the steel consumption, has more excellent anti-seismic property, can further expand the application range of the superposed shear wall structure system, and has great value for popularization and application of the technical system in high seismic intensity areas, high-rise buildings and super high-rise buildings.

Drawings

Fig. 1 is a schematic view of the overall structure of the shear wall of the present invention.

Fig. 2 is a top view of fig. 1.

FIG. 3 is a schematic cross-sectional view of the section steel.

Fig. 4 is a side view of fig. 3.

FIG. 5 is a schematic view of a lateral two-end constraint structure of a shear wall. .

Fig. 6 is an exploded view of a single lumen steel tube restraining member.

Figure 7 is an exploded view of a multi-lumen steel tube restraining member.

Fig. 8 is a main flow line production link diagram of the double-sided folding shear wall panel.

Detailed Description

Referring to fig. 1-2, two blades 3 of the double-sided superposed shear wall are connected through a section steel 2, the section steel 2 is H-shaped in cross section, four end points of the H-shape are connected with transverse reinforcing steel bars 31 in the blades, and the section steel 2 is longitudinally arranged in the blades and exposed from the upper end and the lower end of the blades 3. A row of shear studs 21 are mounted on each side of the H-section. According to the design requirement, the section steel 2 can be set into different types such as H-shaped steel, C-shaped steel, angle steel, steel pipes and the like. The frameworks of the two leaf plates are grids consisting of transverse steel bars 31 and longitudinal steel bars 21, one section steel is arranged every two grids in the transverse direction, and four contact points of each section steel and the transverse steel bars are positioned on the longitudinal middle line of each grid; wherein the transverse reinforcing steel bar 31 extends out of the blade plate and is connected with other structural members through direct anchoring or mechanical anchoring and the like according to design requirements. The longitudinal steel bars 21 can be arranged according to the minimum reinforcement ratio, do not extend out of the wall body and do not connect at the horizontal joint. The profile steel 2 extends out of the wall body according to design requirements, and the upper layer and the lower layer can be effectively connected at the horizontal joint through various modes such as welding, bolt connection or flange connection.

Referring to fig. 3 and 4, the positioning angle steel 22 is welded at four contact points of the section steel 2 and the transverse steel bars 31 in the blade 3, and the welding line 23 is shown in the figure.

The manufacturing process of the shear wall comprises the following steps: firstly, a framework structure and a square steel tube welding structure of the shear wall are manufactured, then concrete of two blade plates is poured, the formed shear wall is transported to a site to be installed in place, square steel tubes on two sides of the shear wall are installed, and after the installation is finished, the concrete is poured into the square steel tubes and the shear wall. Before pouring concrete, the gap between the blade plate and the guard plate is sealed by a sealing material. When the shear wall is manufactured, firstly, the framework of the shear wall is placed in one blade plate template for concrete pouring, after the concrete is poured in the other template after solidification, the forming part is inverted and inserted into the template, and then the concrete is fixed to be formed. The double-sided superimposed shear wall plate adopts large platform steel mould automatic assembly line production, and the production process is as shown in figure 8: cleaning a bench formwork by an automatic sweeper, automatically paying off and automatically supporting a formwork by a mechanical formwork supporting hand, fixing embedded parts (such as wire boxes, sleeves and the like), spraying a release agent, manually binding a reinforcing mesh and lattice reinforcing steel bars, pouring a concrete spreader, vibrating a platform, curing in a steam curing room, finishing primary curing of a blade plate A, overturning a formwork table of the blade plate A, finishing positioning of the blade plate B, pouring a blade plate B by the concrete spreader, vibrating the platform, finishing secondary curing, demoulding and leaving the site at a cost.

The field assembly type construction is divided into three steps: 1) the wall body part is hoisted in place on site, and the bottom section steel is connected with the corresponding section steel member at the lower part in a site welding or other connection mode.

2) And binding corresponding structural steel bars at the horizontal joint, and finishing formwork support by adopting an aluminum formwork or other formworks.

3) According to the design requirement, common concrete, micro-expansive concrete or self-compacting concrete is poured in the cavity part in situ.

As shown in fig. 5, the two sides of the composite shear wall adopt the square steel tube 1 as a constraint member, two parallel steel plates are welded on one side surface of the square steel tube 1 as a guard plate 11, the side surface of the square steel tube 1 and the two guard plates 11 form a mounting groove, a row of studs 4 are welded between the two guard plates 11 along the side surface of the square steel tube 1, the two ends of the composite shear wall are inserted into the mounting groove, in order to adapt to a new type steel tube concrete shear wall constraint edge member, based on the construction mode of the double-sided composite shear wall, the length of the distributed steel bars of the horizontal wall body extending out of the blade plate (not less than 0.6 times of the minimum anchoring length of the steel bars) is shortened, and the end part of the composite shear wall is provided with a mechanical anchoring joint, the two ends of the composite shear wall are provided with extending transverse steel bars 31, the end part of the transverse steel bars 31. And after splicing, concrete is poured among the square steel pipe 1, the two guard plates 11 and the superposed shear wall.

The square steel pipe 1 can be designed into a single-cavity constraint component or a multi-cavity constraint component, the single-cavity constraint component directly welds the guard plate 11 and the stud 4 on the side surface of the square steel pipe 1, the multi-cavity constraint component is formed by welding a U-shaped steel 12 on the side surface of the square steel pipe to form a second square cavity and then welding the guard plate 11 and the stud 4 on the outer side of the second square cavity, and the specific structure is shown in fig. 6 and 7.

According to the requirements of the site, the structure can be designed into a straight-line-shaped wall constraint edge member, an L-shaped wall single-cavity concrete filled steel tube constraint edge member, an L-shaped wall multi-cavity concrete filled steel tube constraint edge member, a T-shaped wall single-cavity concrete filled steel tube constraint edge member, a T-shaped wall multi-cavity concrete filled steel tube constraint edge member, a cross-shaped wall single-cavity concrete filled steel tube constraint edge member, a cross-shaped wall multi-cavity concrete filled steel tube constraint edge member and the like.

Firstly, according to the design requirements, the square steel tube 1, the U-shaped steel 12, the guard plate 11, the stud 4 and other parts are welded into a whole,

the invention can realize on-site full-assembly construction, and can greatly improve the on-site construction efficiency and reduce the on-site construction safety risk compared with the construction in a currently and generally adopted shear wall cast-in-place mode. This kind of novel assembled shear force wall has following several advantages:

(1) advanced technology and excellent performance

From the perspective of further development of the fabricated structure, high-strength and high-performance concrete and steel bars can be adopted more, and the prefabricated concrete member and steel member combined road is used.

A great deal of research shows that the overall structural performance of the steel-concrete composite structure is obviously superior to the simple superposition of the performances, and the steel pipe concrete structure is a good proof for the steel-concrete structure which is adopted in a great deal at present. As a steel-concrete combined structure, the invention can give full play to the respective advantages of a steel structure and a concrete structure, and can judge that the structural performance of the steel-concrete combined structure is superior to that of the traditional cast-in-place reinforced concrete shear wall based on the existing research results, thereby not only achieving the aim of equal cast-in-place, but also having better anti-seismic performance than the cast-in-place shear wall, and being applicable to the construction of fabricated houses in ultra-high-rise fabricated houses and high seismic intensity areas.

(2) Convenient assembly type construction

The invention can greatly improve the construction efficiency and the construction quality of the shear wall structure (basically avoids the use of on-site templates, greatly reduces the total amount of cast-in-place concrete), reduces the number of constructors and reduces the labor intensity of the constructors, and has the characteristics of simple structure and convenient construction.

(3) Low comprehensive cost

Compared with an assembly type steel structure lateral force resistant system, the steel consumption is obviously less, and the inherent defects that the steel performance cannot be fully exerted due to the fact that a single steel structure is subjected to integral and local instability prevention, the durability and the fire resistance of the steel structure are poor and the like are overcome. Compared with the traditional assembled concrete shear wall, the method can effectively avoid grouting sleeve connection, has the defects of high construction difficulty, no effective quality detection means and the like at present, and increases little steel consumption; and the comprehensive cost and quality risk are lower in consideration of the cost of grouting materials, sleeves, construction, detection and the like.

In conclusion, the invention combines the advantages of the steel structure and the concrete structure and overcomes the defects as much as possible, thereby being more in line with the national conditions of China at the present stage. The method has high popularization value and wide application prospect in the field of the current assembly type buildings, particularly in the field of high-rise and super high-rise residences.