CN215563520U - Assembly type mixed shear wall system with steel pipe concrete connection nodes - Google Patents

Abstract

The utility model discloses an assembled hybrid shear wall system with a steel pipe concrete connection node. The prefabricated wall unit structure comprises a prefabricated wall unit structure, wherein steel components formed by welding a strip steel plate, a ribbed plate, a stud, an ear plate and the like are embedded at the upper end and the lower end of the prefabricated wall unit structure, and the strip steel plate is welded with a vertical steel bar and outwards extends out of the prefabricated wall unit structure; forming a rib on the horizontal steel bar, sealing the rib in an annular manner, and spot-welding the vertical steel bar at the end part; the prefabricated wall units are temporarily fixed through the ear plates, and the upper plate outlet end and the lower plate outlet end are connected with the left plate outlet end and the right plate outlet end at the floor by groove welding seams; and (3) putting the horizontal steel bars of the adjacent prefabricated wall units into the steel bar outlet sections, overlapping or welding the opening stirrups and the horizontal steel bars, and pouring self-compacting concrete around the prefabricated wall units after the prefabricated wall units are installed to form a complete assembly type mixed shear wall system. The assembled hybrid shear wall system has the advantages of excellent stress performance, convenient construction, economy and reasonability, breaks through some technical bottlenecks encountered in engineering application of the existing assembled concrete shear wall, and has larger market popularization value.

Description

Assembly type mixed shear wall system with steel pipe concrete connection nodes

Technical Field

The utility model relates to an assembly type shear wall system of constructional engineering and a construction method thereof, in particular to an assembly type hybrid shear wall system with a steel pipe concrete connection node.

Background

The assembly structure not only occupies a basic position in an assembly type building integrated system, but also plays a leading role in 'leading-up soldiers' for realizing the building industrialization target. At present, the fabricated structure system mainly takes a fabricated concrete structure and a fabricated steel structure as main components, wherein the technical research and development investment of the fabricated concrete structure is earlier, the policy support is more, and certain progress is achieved, but the control targets of distance quality, environmental protection, efficiency, cost and the like have not small gaps. The technical standard of the fabricated concrete has more limitations compared with the requirements of key parts of a building, such as building height, seismic intensity, a reinforced area at the bottom of a shear wall, a core tube and the like, on the technical standard formulation aspect, compared with a cast-in-place concrete structure, the fabricated concrete has more judicious scientific attitude on the existing fabricated concrete structure technology; the prefabricated concrete structure mainly comprises a plane beam slab system, and a vertical structure system, particularly a prefabricated concrete shear wall, is less adopted, so that the total prefabrication rate and the assembly rate of the prefabricated concrete structure are low.

The existing prefabricated concrete structure technology is generally researched and developed around the technical path of 'equal cast-in-place', and in terms of structural performance, the existing prefabricated concrete structure can only be infinitely close to cast-in-place 'in theory, but according to the existing technical standard, the situation that the existing prefabricated concrete structure is close to cast-in-place' in engineering practice is difficult. Taking the assembled integral shear wall as an example, the upper part and the lower part of the prefabricated shear wall are connected, the concrete part of the prefabricated shear wall consists of a horizontal post-pouring belt and grouting materials filled at the joint of the plate surface, and higher requirements are provided for the roughness of the concrete contact surface and the grouting process; the vertical steel bars of the shear wall are connected in a limited space by grouting sleeves, extrusion sleeves or slurry anchor lap joints, strict requirements are put on the sleeve quality and the construction precision, and the connecting modes such as a single row of ribs are additionally arranged in the quincunx arrangement of partial broken ribs or in the middle of all the broken ribs of the precast shear wall, so that the workload of rib connection can be reduced, but the effective section of the shear wall is weakened to a certain extent.

The double-faced superposed shear wall, the ring rib buckling anchoring shear wall and the shear wall prefabricated by the prior insertion method are improved in the up-and-down connection mode of the existing assembled integral shear wall, and the core thought of the double-faced superposed shear wall is that the construction problem of vertical steel bar alignment connection is solved by a method of arranging a concrete post-pouring belt, but various defects still exist. In the former, self-compacting concrete needs to be poured between two layers of precast concrete plates, the cast-in-place concrete amount is large, and the effective thickness of the section of the shear wall at the floor is reduced greatly because the vertical connecting steel bars are in the cavity; the back two adopt the anchor rather than connecting according to antidetonation tension overlap joint length because of vertical reinforcing bar in limited hidden beam height scope, and the antidetonation atress performance of vertical reinforcing bar has great weakening than cast-in-place shear force wall, if vertical reinforcing bar adopts thick liquid anchor overlap joint like according to antidetonation tension length overlap joint, then need pour a large amount of concrete in the scene, have the original intention of default assembled structure, can inevitably have the horizontal construction seam that exposes in addition.

The existing integral shear wall assembling technology has the problems of complex connecting nodes, high construction difficulty, difficulty in hidden engineering detection and the like, and the reliability of shear wall connection can be reduced in engineering practice; although the construction difficulty of the improved assembled integral shear wall is reduced, the anti-seismic stress performance of the shear wall is weakened compared with that of a cast-in-place shear wall. At present, the popularization and application of the assembled shear wall are restricted by some problems encountered in the aspects of design, construction, quality inspection and the like, and the market dilemma can be overcome only by breaking through the technical bottleneck at present and developing the high-performance and high-quality assembled shear wall, so that the development of the assembled building and even the building industrialization is promoted.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the background art, the utility model aims to provide an assembled integral shear wall system with excellent structural stress performance and good economy and a set of construction method with mature technology, convenient installation and reliable connection, and solves the technical bottlenecks of the existing assembled shear wall in the aspects of design, construction, quality inspection and the like; the realization of control targets such as quality, environmental protection, efficiency, cost and the like of the fabricated concrete shear wall structure is promoted.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the prefabricated wall mainly comprises an initial layer prefabricated wall unit, a middle layer prefabricated wall unit and a top layer prefabricated wall unit which are arranged from bottom to top according to the wall surface; the prefabricated wall unit of the starting layer is positioned on the wall surface of the starting bottom floor, the prefabricated wall unit of the top layer is positioned on the wall surface of the top floor, and the prefabricated wall unit of the middle layer is positioned on any one of the wall surfaces of the middle floors between the bottom floor and the top floor;

the prefabricated wall units on the initial floor, the middle-layer prefabricated wall units and the top-layer prefabricated wall units are all prefabricated wall unit structures, and the prefabricated wall unit structures on the upper and lower adjacent floors and the adjacent prefabricated wall unit structures on the same floor are all connected;

the prefabricated wall unit structure mainly comprises an upper end and a lower end banded steel plate, a steel bar truss and a middle concrete member, wherein the concrete member is a concrete wall positioned in the middle of the prefabricated wall unit structure, the steel bar truss comprises two reticular steel bars which are embedded in the concrete member and are respectively arranged on wall surfaces close to two sides of the concrete member, each reticular steel bar is mainly formed by vertically and crossly arranging and welding a plurality of vertical steel bars which are arranged in parallel at intervals and a plurality of horizontal steel bars which are arranged in parallel at intervals, the two horizontal steel bars at the same horizontal height of the two reticular steel bars horizontally extend out of the concrete member and are oppositely bent and butted to form an annular steel bar, an end vertical steel bar is arranged at the bending part of the annular steel bar, the end vertical steel bar is also vertically arranged in parallel to the vertical steel bar, and the end vertical steel bar is welded with the bending part of the annular steel bar;

the upper end and the lower end of the concrete member are respectively provided with two upper end strip-shaped steel plates and two lower end strip-shaped steel plates, the middle parts of the two upper end strip-shaped steel plates/the two lower end strip-shaped steel plates are embedded in the concrete member and are respectively welded with the vertical steel bars of the two net-shaped steel bars, and the two sides of the upper end strip-shaped steel plate and the lower end strip-shaped steel plate extend out of the concrete member and then are welded with the vertical steel bars at the end part; the two upper end strip-shaped steel plates at the upper end of the concrete component are arranged in parallel, the two lower end strip-shaped steel plates at the lower end of the concrete component are arranged in parallel, a plurality of horizontal stiffening ribs and a plurality of vertical stiffening ribs are arranged between the two upper end strip-shaped steel plates and the two lower end strip-shaped steel plates at intervals along the horizontal direction, and the horizontal two ends of each horizontal stiffening rib and the vertical stiffening rib are respectively connected between the inner side surfaces of the two upper end strip-shaped steel plates/the two lower end strip-shaped steel plates, so that the two upper end strip-shaped steel plates/the two lower end strip-shaped steel plates are connected into a whole through the horizontal stiffening ribs and the vertical stiffening ribs; the outer surface of the horizontal stiffening rib is welded with a stud;

the outer side surfaces of two upper end strip-shaped steel plates/two lower end strip-shaped steel plates on two outer sides of each vertical stiffening rib are respectively provided with an ear plate, and the ear plates on two sides and the corresponding vertical stiffening ribs are positioned on the same vertical plane.

The prefabricated wall unit structure of the prefabricated wall unit of the starting layer is completely the same as that of the middle-layer prefabricated wall unit, and the prefabricated wall unit structure of the top-layer prefabricated wall unit is different from that of the middle-layer prefabricated wall unit in that the strip-shaped steel plate at the upper end of the outer side far away from one side of the top-layer prefabricated floor slab is taken out and welded on the outer side of the top-layer prefabricated floor slab and the strip-shaped steel plate at the upper end of the inner side close to one side of the top-layer prefabricated floor slab is not taken out upwards.

The lower ends of the prefabricated wall units on the starting layer are connected with the embedded layer cast-in-place reinforced concrete shear wall and the embedded layer cast-in-place reinforced concrete floor below the bottom floor, the prefabricated wall units on the starting layer and the middle layer prefabricated wall units as well as the middle layer prefabricated wall units on the upper floor and the lower floor are connected with the middle layer prefabricated floor of the middle floor, and the prefabricated wall units on the top layer are connected with the top layer prefabricated floor of the top floor.

Two slotted steel plates which are parallel to each other and are arranged at intervals are pre-embedded in the top of the embedded layer cast-in-place reinforced concrete shear wall, the two slotted steel plates are lapped and welded with vertical steel bars inside the embedded layer cast-in-place reinforced concrete shear wall, a plurality of horizontal stiffening ribs and a plurality of vertical stiffening ribs are arranged between the two slotted steel plates at intervals along the horizontal direction, and the horizontal two ends of each horizontal stiffening rib and the horizontal two ends of each vertical stiffening rib are respectively connected between the two slotted steel plates; the outer side surfaces of the two slotted steel plates on the two outer sides of each vertical stiffening rib are respectively provided with an ear plate, and the ear plates on the two sides and the corresponding vertical stiffening ribs are positioned on the same vertical plane;

the embedded layer cast-in-place reinforced concrete floor mainly comprises concrete, an upper reinforcing mesh and a lower reinforcing mesh which are embedded at the upper part and the lower part in the concrete, wherein the upper reinforcing mesh mainly comprises a plurality of upper reinforcing steel bars which are arranged in parallel at intervals, the upper reinforcing mesh mainly comprises a plurality of lower reinforcing steel bars which are arranged in parallel at intervals, the upper reinforcing steel bars and the lower reinforcing steel bars horizontally extend out of the steel plates and are connected to the slotted steel plates and pass through the notches of the slotted steel plates to be bent and anchored, the slotted steel plates extend upwards to form plates, and cast-in-place concrete is poured between the upper reinforcing steel bars and the lower reinforcing steel bars horizontally extend out of the steel plates and the slotted steel plates.

Setting a gap between the lower end of the lower end strip-shaped steel plate of the prefabricated wall unit structure of the initial layer and the slotted steel plate of the embedded layer cast-in-place reinforced concrete shear wall after parallel alignment, welding the gap through a groove weld, enclosing a space formed by the slotted steel plate of the embedded layer cast-in-place reinforced concrete shear wall, the plate outlet section of the lower end strip-shaped steel plate of the prefabricated wall unit of the initial layer and the horizontal stiffening ribs of the prefabricated wall unit structure of the initial layer and the embedded layer cast-in-place reinforced concrete shear wall as a cavity, pouring self-compacting concrete in the cavity, and welding studs on the surfaces of the horizontal stiffening ribs in the cavity facing to the center of the cavity;

setting a gap for welding through a groove weld after the upper end of an upper end strip steel plate of the prefabricated wall unit structure of the starting layer and the lower end of a lower end strip steel plate of the prefabricated wall unit structure of the middle layer are aligned in parallel, enclosing a space formed by the upper end strip steel plate of the starting layer prefabricated wall unit, a plate outlet section of the lower end strip steel plate of the middle layer prefabricated wall unit and horizontal stiffening ribs of the prefabricated wall unit structures of the starting layer prefabricated wall unit and the middle layer prefabricated wall unit as a cavity, pouring self-compacting concrete in the cavity, and welding studs on the surfaces of the horizontal stiffening ribs in the cavity, which face the center of the cavity;

the upper end of an upper end strip-shaped steel plate of a middle-layer prefabricated wall unit structure of a next floor and the lower end of a lower end strip-shaped steel plate of a middle-layer prefabricated wall unit structure of a previous floor are aligned in parallel and then are provided with gaps for welding through groove welding seams, a space formed by enclosing the upper end strip-shaped steel plate of the middle-layer prefabricated wall unit of the next floor, a plate outlet section of the lower end strip-shaped steel plate of the middle-layer prefabricated wall unit of the previous floor and horizontal stiffening ribs of two middle-layer prefabricated wall units of upper and lower adjacent floors serves as a cavity, self-compacting concrete is poured in the cavity, and studs are welded on the surfaces of the horizontal stiffening ribs in the cavity, which face the center of the cavity;

the upper end of the upper end band-shaped steel plate of the middle-layer prefabricated wall unit structure and the lower end of the lower end band-shaped steel plate of the top-layer prefabricated wall unit prefabricated wall structure are parallelly aligned and then are welded through groove weld joints, and a space formed by enclosing the upper end band-shaped steel plate of the middle-layer prefabricated wall unit, the plate outlet section of the lower end band-shaped steel plate of the top-layer prefabricated wall unit and the horizontal stiffening ribs of the middle-layer prefabricated wall unit and the top-layer prefabricated wall unit is used as a cavity, self-compacting concrete is poured in the cavity, and studs are welded on the surfaces of the horizontal stiffening ribs in the cavity towards the center of the cavity.

The prefabricated wall units on the initial layer, the prefabricated wall units on the middle layer and the prefabricated wall units on the top layer of the same floor are connected through open stirrups, specifically, the horizontal steel bars of the adjacent prefabricated wall unit structures are connected through the open stirrups, and two ends of each open stirrup are respectively lapped or welded with the two horizontal steel bars of the adjacent prefabricated wall unit structures; and self-compacting concrete is poured in the spaces of the horizontal steel bar outlet sections of the initial layer prefabricated wall unit, the middle layer prefabricated wall unit and the top layer prefabricated wall unit.

The top of each middle-layer prefabricated wall unit is connected with a middle-layer prefabricated floor slab, the middle-layer prefabricated floor slab mainly comprises concrete, an upper reinforcing mesh and a lower reinforcing mesh, the upper reinforcing mesh and the lower reinforcing mesh are embedded in the concrete, the upper reinforcing mesh is mainly composed of a plurality of upper reinforcing bars which are arranged in parallel at intervals, the upper reinforcing mesh is mainly composed of a plurality of lower reinforcing bars which are arranged in parallel at intervals, the horizontal outlet bars of the upper reinforcing bars and the lower reinforcing bars are connected to the outer side surface of an upper end strip-shaped steel plate of the middle-layer prefabricated floor slab and are sealed in an annular mode, post-pouring concrete is poured between the horizontal outlet bar sections of the upper reinforcing bars and the lower reinforcing bars and the upper end strip-shaped steel plate, and detachable hanging templates are hung and arranged at the lower parts of the horizontal outlet bar sections of the upper reinforcing bars and the lower reinforcing bars; the top of each top-layer prefabricated wall unit is connected with a top-layer prefabricated floor slab, the top-layer prefabricated floor slab mainly comprises concrete, an upper reinforcing mesh and a lower reinforcing mesh, the upper reinforcing mesh and the lower reinforcing mesh are embedded in the concrete, the upper reinforcing mesh mainly comprises a plurality of upper reinforcing bars which are arranged in parallel at intervals, the upper reinforcing mesh mainly comprises a plurality of lower reinforcing bars which are arranged in parallel at intervals, the upper reinforcing bars and the lower reinforcing bars are horizontally led out to be connected to the outer side surface of an upper end strip-shaped steel plate of the top-layer prefabricated floor slab and are sealed in an annular mode, post-pouring concrete is poured between horizontal led-out sections of the upper reinforcing bars and the lower reinforcing bars and an upper end strip-shaped steel plate, and a detachable hanging template is hung and arranged on the lower portions of the upper reinforcing bars and the lower reinforcing bar led-out sections.

Before construction, the ear plates at the lower end of the prefabricated wall unit at the starting layer and the ear plates of the embedded layer cast-in-place reinforced concrete shear wall, the ear plates at the upper end of the prefabricated wall unit at the starting layer and the ear plates at the lower end of the prefabricated wall unit at the middle layer, the ear plates of the adjacent prefabricated wall units at the middle layers and the ear plates at the upper end of the prefabricated wall unit at the middle layer and the lower end of the prefabricated wall unit structure of the prefabricated wall unit at the top layer are fixedly connected through mounting bolts and ear plate connecting plates.

In the fabricated hybrid shear wall system, the vertical connection of the prefabricated units and the horizontal connection at the floors are both steel pipe concrete composite structures, and the stress performance is superior to that of a steel structure or a reinforced concrete structure; compared with the existing assembly type concrete shear wall technology, the assembly type mixed shear wall system is convenient and quick to install without supporting, calibrating reinforcing steel bars, sleeve grouting, slurry anchor lap joint, seam grouting and other connecting technologies in construction, the existing standards are used for steel structure welding, concrete pouring and quality detection, and the technology is mature and reliable; compared with an assembly type steel structure, the prefabricated wall unit only comprises partial steel components at the upper end and the lower end, the rest parts are common reinforced concrete, the steel consumption is greatly reduced, and meanwhile, the exposed surface of steel parts is less, and the coating engineering quantity of corrosion resistance and fire resistance is small.

The assembled hybrid shear wall system has the advantages of excellent stress performance, convenient construction, economy and reasonability, breaks through some technical bottlenecks encountered in engineering application of the existing assembled concrete shear wall, and has larger market popularization value.

Compared with the prior art, the utility model has the following characteristics and beneficial effects:

the utility model takes the steel-concrete composite structure theory, especially the steel pipe concrete theory as guidance, develops a new way on the vertical connection problem of the assembled concrete shear wall, creatively introduces the steel pipe concrete connection node, and breaks through the technical bottleneck of the existing assembled concrete shear wall.

The utility model relates to an assembly type hybrid shear wall system (hereinafter referred to as an assembly type hybrid shear wall) with a steel pipe concrete connection node, which is suitable for the existing assembly type concrete structure, such as an assembly type shear wall structure, an assembly type frame-shear wall structure and the like; the method can also be used for super high-rise buildings such as an assembled concrete frame-core tube structure, an assembled tube-in-tube structure, an assembled steel frame-concrete core tube structure and the like. The reason why the assembled hybrid shear wall can be universally applied to various structural forms is that the performance of the assembled hybrid shear wall structure can be stronger than that of a cast-in-place structure.

According to the theory of a steel-concrete combined structure, the combined structure can give full play to the mechanical properties of two materials through reasonable combination and collocation, and obtain more excellent structural properties; as a branched steel pipe concrete structure of a combined structure, particularly in a vertical member, two materials of a steel pipe and concrete interact in a stress process, namely the steel pipe restrains core concrete of the steel pipe, so that the concrete is in a complex stress state, the strength of the concrete is improved, and the plasticity and the ductility are improved; meanwhile, due to the existence of the concrete, the local yield of the steel pipe can be delayed or avoided too early, so that the full play of the material performance of the steel pipe can be ensured, the two materials in the concrete-filled steel pipe vertical member mutually make up the weakness of each other, and the advantages of each other are fully played, so that the concrete-filled steel pipe vertical member has higher bearing capacity which is generally higher than the sum of the independent bearing capacities of the steel pipe and the core concrete which form the concrete-filled steel pipe. The steel pipe concrete structure theory is verified through a large number of structure tests and is widely applied to engineering practice.

According to the theory of a steel pipe concrete structure, the connection of the lower end of the fabricated hybrid shear wall adopts a combined structure similar to the steel pipe concrete, the steel pipe part of the combined structure is formed by welding two strip-shaped steel plates, a plurality of horizontal stiffening ribs and vertical stiffening ribs, and after the upper strip-shaped steel plate and the lower strip-shaped steel plate are in butt welding, self-compacting concrete is poured in a cavity of a steel member formed by enclosing the steel plate members, so that the combined structure with the periphery being the steel plates and the interior being core concrete is formed; meanwhile, the construction joint at the joint of the new concrete and the old concrete and the butt weld of the strip-shaped steel plate are staggered, namely, the whole steel plate is arranged outside the concrete construction joint, and the whole cast concrete is arranged inside the butt weld of the steel plate, so that the construction defects of the steel plate and the steel plate can be overcome, and the connection reliability is enhanced; in addition, the composite structure is similar to a box type steel pipe concrete composite beam in the length direction, and a hidden beam of the shear wall is replaced; therefore, the connection performance of the upper end and the lower end of the fabricated mixed shear wall can be higher than that of the cast-in-place reinforced concrete shear wall both theoretically and practically.

The prefabricated wall units of the fabricated mixed shear wall are connected at the same floor according to a combined structure, namely a box type steel pipe concrete combined beam; the connection outside the floor is a reinforced concrete structure, but some improvements are made; the key groove is made to prefabricated wall unit both sides concrete, and the horizontal reinforcement symmetry play muscle of prefabricated wall unit forms annular closed hoop, and the hoop bight sets up vertical reinforcing bar and horizontal reinforcement spot welding, and with upper and lower banded steel sheet welding, form stable steel bar truss. The opening stirrups are placed on the horizontal steel bar reinforcement outlet section one by one, the opening directions of the opening stirrups are changed alternately and are lapped or welded with the horizontal steel bars, the continuity of the horizontal steel bars is guaranteed, self-compacting concrete is poured on the reinforcement outlet section of the horizontal steel bars, and the left and right connection mode of the same layer of the assembled type concrete shear wall is equivalent to a reinforcement plate of a casting belt after construction reserved for the reinforced concrete cast-in-place shear wall.

Because the connection of the lower layer of the fabricated hybrid shear wall is stronger than that of the reinforced concrete cast-in-situ shear wall, and the connection of the left layer and the right layer of the fabricated hybrid shear wall is not weaker than that of the reinforced concrete cast-in-situ shear wall, the structural performance of the fabricated hybrid shear wall can be generally higher than that of the reinforced concrete cast-in-situ shear wall, and the aim of being stronger than that of cast-in-situ is achieved.

The utility model has another important advantage in the aspect of the construction of the fabricated mixed shear wall, and the conventional construction technology and the conventional quality inspection means are adopted from the processes of factory manufacturing of the shear wall prefabricated units, field hoisting and splicing of the shear wall prefabricated units, formation of the fabricated mixed shear wall system and the like, so that the construction quality of the fabricated mixed shear wall system is ensured.

The welding of steel components at the upper end and the lower end of a prefabricated unit of the shear wall, the double-side welding or the single-side welding of a vertical steel bar and a strip-shaped steel plate, the binding and spot welding of a steel bar framework in the prefabricated unit, the formwork erecting and the concrete pouring have very mature construction technologies and detection means; the field hoisting splicing of the shear wall prefabricated units adopts a plurality of ear plates for temporary fixation, and the upper and lower banded steel plates are butted by groove welding, which is a common steel column construction method; the construction of pouring concrete in the rib outlet section and the cavity of the composite structure is similar to the post-pouring belt of the cast-in-place structure after-pouring construction; therefore, the whole set of construction process of the assembly type hybrid shear wall is mature, simple and even simple, and has strong controllability and high reliability. Compared with the existing assembly type concrete shear wall technology, the method has the advantages that no support, no calibration steel bar, no sleeve grouting, no slurry anchor lap joint, no seam grouting and other complex connecting processes are needed.

The assembled hybrid shear wall is fast in construction, and the plate outlet length and the rib outlet length of the shear wall prefabricated units are the same, so that hoisting of the shear wall prefabricated units is not interfered with each other, and the problem of rib outlet avoidance does not exist; horizontal steel bar outlet sections on two sides of the prefabricated units of the shear wall are enclosed to form steel bar trusses, so that deviation or damage possibly caused in the transportation process of the prefabricated units can be reduced; opening stirrups are placed on the horizontal reinforcement outlet sections on the two sides of the shear wall prefabricated unit, and the opening stirrups can be inserted into the reinforcement outlet sections only by being properly bent at a certain angle, so that the lap joint or welding of the horizontal reinforcements is realized; the construction efficiency can be greatly improved by the aid of the construction measures. In addition, factory manufacturing and field installation of the shear wall prefabricated units can be carried out synchronously, if the engineering is urgently needed, the strip-shaped steel plates can be thickened, the installation lug plates can be reinforced to provide vertical support, the rib forming sections of each layer of prefabricated floor slab can be reinforced, and the prefabricated floor slab and the strip-shaped steel plates can be welded to provide horizontal support; splicing and welding of the shear wall prefabricated units from bottom to top are completed firstly, concrete of each layer is poured finally, the ear plates are cut off, construction of the upper layer is not needed after the concrete is poured to reach the age after the lower layer is poured, and therefore the construction period can be greatly shortened.

The assembled mixed shear wall has good economy and higher comprehensive cost performance. Compared with the existing assembled integral shear wall, the steel consumption is increased because the assembled mixed shear wall contains part of the steel pipe concrete combined connection nodes. According to the concrete-filled steel tube theory, the concrete-filled steel tube uses the least material to meet the same performance target as the comparison condition; particularly, the fabricated mixed shear wall does not need to be supported, and does not need complex connecting processes such as sleeve grouting, slurry anchor lapping, seam grouting and the like, so that a part of materials and construction cost can be saved, particularly, the fabricated mixed shear wall has a shorter construction period and higher construction efficiency, and a large amount of financial cost and labor cost can be saved; the price influence factors such as materials, labor and construction period are comprehensively considered, and the assembled type mixed shear wall can obtain higher cost performance than the existing assembled integral type shear wall.

Compared with the existing assembly steel structure, the prefabricated units of the assembly type mixed shear wall only comprise part of steel parts at the upper end and the lower end, the rest are made of common reinforced concrete, the steel consumption is greatly reduced, meanwhile, the exposed surfaces of the steel parts are few, the coating engineering quantity of corrosion resistance and fire resistance is small, and the economic index advantage is obvious.

Drawings

FIG. 1 is a fabricated hybrid shear wall^{Is/are as follows}Schematic diagram of prefabricated wall unit structure.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a sectional view taken along line B-B of fig. 1.

Fig. 4 is a cross-sectional view taken along line C-C of fig. 1.

FIG. 5 is an elevation view of an upper portion of an assembled hybrid shear wall architecture.

FIG. 6 is a D-D side view of an upper portion of an assembled hybrid shear wall architecture.

FIG. 7 is an elevation view of a mid-portion of an assembled hybrid shear wall architecture.

FIG. 8 is a D-D side view of a middle portion of an assembled hybrid shear wall architecture.

FIG. 9 is an elevation view of a lower portion of a fabricated hybrid shear wall architecture.

FIG. 10 is a D-D side view of the lower portion of the fabricated hybrid shear wall architecture.

Fig. 11 is a cross-sectional view E-E of fig. 9.

Fig. 12 is a sectional view taken along line F-F in fig. 5, 7 and 9.

Fig. 13 is a G-G sectional view of fig. 5, 7 and 9.

Reference numerals: 1-embedded layer cast-in-place reinforced concrete shear wall, 2-initial layer prefabricated wall unit, 3-middle layer prefabricated wall unit, 4-top layer prefabricated wall unit, 5-embedded layer cast-in-place reinforced concrete floor slab, 6-middle layer prefabricated floor slab, 7-top layer prefabricated floor slab, 8-slotted steel plate, 9-lower end strip-shaped steel plate, 10-horizontal stiffening rib, 11-bolt, 12-vertical stiffening rib, 13-lug plate, 14-mounting bolt, 15-lug plate connecting plate, 16-groove welding line, 17-self-compacting concrete, 18-upper end strip-shaped steel plate, 19-outer side upper end strip-shaped steel plate, 20-inner side upper end strip-shaped steel plate, 21-opening stirrup, 22-detachable hanging template, 1.1-4.1-vertical steel bar, 1.2-4.2-horizontal steel bars, 2.3-4.3-end vertical steel bars, 5.1-7.1-upper steel bars of a floor slab, 5.2-7.2-upper steel bars of the floor slab and 6.3-7.3-post-cast concrete.

Detailed Description

The utility model is further described with reference to the accompanying drawings and the detailed description.

The concrete implementation of the utility model is mainly composed of an initial layer prefabricated wall unit 2, a middle layer prefabricated wall unit 3 and a top layer prefabricated wall unit 4 which are arranged from bottom to top according to the wall surface; the starting layer prefabricated wall unit 2 is positioned on the starting bottom floor wall surface, the top layer prefabricated wall unit 4 is positioned on the top floor wall surface, and the middle layer prefabricated wall unit 3 is positioned on any middle floor wall surface between the bottom floor and the top floor; the prefabricated wall units 2 at the initial layer and the prefabricated wall units 4 at the top layer are only one layer, and the prefabricated wall units 3 at the middle layer can have at least one layer or zero.

The prefabricated wall units 2 on the initial floor, the prefabricated wall units 3 on the middle floor and the prefabricated wall units 4 on the top floor are all of prefabricated wall unit structures, the prefabricated wall units are connected with one another vertically and horizontally, and the prefabricated wall unit structures on the adjacent floors are connected with one another vertically and adjacent prefabricated wall unit structures on the same floor;

taking the prefabricated wall unit 3 in the middle layer of the fabricated hybrid shear wall as an embodiment, referring to fig. 1 to 4, the prefabricated wall unit 3 is composed of steel assemblies at the upper end and the lower end, steel bar trusses at the left end and the right end and large-area reinforced concrete members in the middle.

The prefabricated wall unit structure mainly comprises upper and lower end strip-shaped steel plates 9 and 18, a steel bar truss and a middle large-area concrete member, wherein the concrete member is a concrete wall positioned in the middle of the prefabricated wall unit structure and is formed by pouring concrete,

the steel bar truss comprises two reticular steel bars which are buried in a concrete member and are respectively arranged on wall surfaces close to two sides of the concrete member, the two reticular steel bars are the same in structure, each reticular steel bar is mainly formed by vertically arranging and welding a plurality of vertical steel bars 3.1 which are arranged in parallel at intervals and a plurality of horizontal steel bars 3.2 which are arranged in parallel at intervals, the vertical steel bars 3.1 do not extend out of the concrete member, the two horizontal steel bars 3.2 with the same horizontal height of the two reticular steel bars horizontally extend out of the concrete member and are oppositely bent and butted to form annular steel bars, an end vertical steel bar 3.3 is arranged at the bending part of the annular steel bar, the end vertical steel bar 3.3 is also vertically arranged in parallel with the vertical steel bar 3.1, and the end vertical steel bar 3.3 is welded with the bending part of the annular steel bar;

the upper end and the lower end of the concrete member are respectively provided with two upper end strip-shaped steel plates 18 and two lower end strip-shaped steel plates 9, the two upper end strip-shaped steel plates 18 are arranged oppositely to the parallel at intervals, the two lower end strip-shaped steel plates 9 are arranged oppositely to the parallel at intervals, the middle parts of the two upper end strip-shaped steel plates 18/the two lower end strip-shaped steel plates 9 are embedded in the concrete member and respectively welded with the vertical steel bars 3.1 of the two net-shaped steel bars, the continuity of the vertical steel bars is ensured, and the two sides of the upper end strip-shaped steel plates 18 and the lower end strip-shaped steel plates 9 are welded with the corresponding end vertical steel bars 3.3 at one side of each of the two end strip-shaped steel plates 18 and the two lower end strip-shaped steel plates 9 after extending out of the concrete member, so as to form a stable steel bar truss; the two upper end strip-shaped steel plates 18 at the upper end of the concrete component are arranged in parallel, the two lower end strip-shaped steel plates 9 at the lower end of the concrete component are arranged in parallel, a plurality of horizontal stiffening ribs 10 and a plurality of vertical stiffening ribs 12 are arranged between the two upper end strip-shaped steel plates 18 and the two lower end strip-shaped steel plates 9 at intervals along the horizontal direction, the horizontal stiffening ribs 10 and the vertical stiffening ribs 12 are arranged in a staggered mode, the horizontal two ends of the horizontal stiffening ribs 10 and the vertical stiffening ribs 12 are connected between the inner side surfaces of the two upper end strip-shaped steel plates 18/the two lower end strip-shaped steel plates 9 respectively so as to improve the anchoring force of the steel component, and the two upper end strip-shaped steel plates 18/the two lower end strip-shaped steel plates 9 are connected into a whole through the horizontal stiffening ribs 10 and the vertical stiffening ribs 12; the inner surface of the horizontal stiffening rib 10 is attached to the outer surface of the concrete member, and the outer surface of the horizontal stiffening rib 10 is welded with the stud 10, so that the double functions of improving the gripping force of new and old concrete and improving the combined effect of the steel pipe concrete structure are achieved, as shown in fig. 5-12;

the outer side surfaces of two upper end strip-shaped steel plates 18/two lower end strip-shaped steel plates 9 on two outer sides of each vertical stiffening rib 12 are respectively provided with an ear plate 13, the ear plates 13 on two sides are symmetrically arranged, and the ear plates 13 on two sides and the corresponding vertical stiffening ribs 12 are positioned on the same vertical plane.

The lower extreme banded steel sheet 9 is downward, all goes out the board to controlling, and horizontal reinforcement 3.2 goes out the muscle, and vertical reinforcement 3.3 does not go out the muscle, goes out the wall of concrete component promptly, welds horizontal stiffening rib 10 and vertical stiffening rib 12 of taking the toggle pin 11 between two lower extreme banded steel sheets 9, and banded steel sheet 9 anchors in the prefabricated wall unit construction and with the welding of the vertical reinforcement 3.1 in the prefabricated wall unit construction. The outer side surface of the lower end strip-shaped steel plate 9 is welded with a plurality of lug plates 13, and the lug plates 13 and the vertical stiffening ribs 12 are the same in number and correspond in position.

The construction of the upper end steel strip plates 18 is basically similar to that of the lower end steel strip plates 9, in the specific implementation, a stud 11 for connecting with a floor slab is welded on the outer side surface of one upper end steel strip plate 18, and a horizontal stiffening rib 10 is connected between anchoring ends of the upper end steel strip plate 18 anchored into the prefabricated wall unit structure, so that the horizontal stiffening rib 10 is added.

The key groove that the interval equipartition was done to the both sides face of concrete member among the prefabricated wall unit construction along vertical direction, the length that the horizontal reinforcement 3.2 goes out the muscle is the same with the length that lower extreme banded steel 9, the 18 levels of upper end banded steel go out the board, the tip that the horizontal reinforcement 3.2 goes out the muscle section is the annular and seals, tip vertical reinforcement 3.3 and horizontal reinforcement 3.2 are at the cross spot welding, tip vertical reinforcement 3.3 upper and lower ends respectively with lower extreme banded steel 9, the welding of upper end banded steel 18.

In the above description, the reference numerals of the vertical reinforcing bars 3.1, the horizontal reinforcing bars 3.2 and the end vertical reinforcing bars 3.3 are for the middle prefabricated wall unit 3, and the same is true for the starting prefabricated wall unit 2 and the top prefabricated wall unit 4, the starting prefabricated wall unit 2 has the vertical reinforcing bars 2.1, the horizontal reinforcing bars 2.2 and the end vertical reinforcing bars 2.3, and the top prefabricated wall unit 4 has the vertical reinforcing bars 4.1, the horizontal reinforcing bars 4.2 and the end vertical reinforcing bars 4.3.

In the fabricated hybrid shear wall system with the steel pipe concrete connection node, in the specific implementation, the prefabricated wall unit structure of the top prefabricated wall unit 4 can be different from the prefabricated wall unit structures of the initial prefabricated wall unit 2 and the middle prefabricated wall unit 3. The prefabricated wall unit structure of the prefabricated wall unit 2 at the initial layer is identical to that of the prefabricated wall unit 3 at the middle layer, and the prefabricated wall unit structure of the prefabricated wall unit 4 at the top layer is different from that of the prefabricated wall unit 3 at the middle layer in that a strip-shaped steel plate 19 at the upper outer end of one side far away from the prefabricated floor slab 7 at the top layer is taken out and welded with studs 11 at the outer side, and a strip-shaped steel plate 20 at the upper inner end of one side close to the prefabricated floor slab 7 at the top layer is not taken out upwards.

The embodiment of the prefabricated wall units which are effectively connected to form a complete shear wall system is shown in fig. 5-13, and the fabricated hybrid shear wall system with the steel pipe concrete connection nodes comprises an initial layer prefabricated wall unit 2, a middle layer prefabricated wall unit 3, a top layer prefabricated wall unit 4, connection of the lower end of the initial layer prefabricated wall unit 2 with a cast-in-place wall 1 and a cast-in-place plate 5, connection of the prefabricated wall units with each other up and down, left and right, connection of the prefabricated wall units with a middle layer prefabricated floor slab 6 and a top layer prefabricated floor slab 7, and the like.

Specifically, the lower end of the starting-layer prefabricated wall unit 2 is connected with the embedded-layer cast-in-place reinforced concrete shear wall 1 and the embedded-layer cast-in-place reinforced concrete floor 5 below the bottom floor, and the embedded-layer cast-in-place reinforced concrete shear wall 1 and the embedded-layer cast-in-place reinforced concrete floor 5 are positioned below the ground and used as the wall surface and the roof plate of the basement; the prefabricated wall units 2 of the starting floor and the prefabricated wall units 3 of the middle floor as well as the prefabricated wall units 3 of the middle floors of the upper and lower adjacent floors are connected with the prefabricated floor slab 6 of the middle floor, and the prefabricated wall units 4 of the top floor are connected with the prefabricated floor slab 7 of the top floor.

Prefabricated wall unit structures in the same floor are connected through the opening stirrups 21.

The embedded layer cast-in-place reinforced concrete shear wall 1 is a cast-in-place wall, two slotted steel plates 8 which are parallel to each other and are arranged at intervals are embedded at the top of the embedded layer cast-in-place reinforced concrete shear wall, vertical steel bars 1.1 and horizontal steel bars 1.2 which are the same as the internal structure of a prefabricated wall unit structure are also arranged inside the embedded layer cast-in-place reinforced concrete shear wall 1 and are in lap welding with the vertical steel bars 1.1 inside the embedded layer cast-in-place reinforced concrete shear wall 1, a plurality of horizontal stiffening ribs 10 and a plurality of vertical stiffening ribs 12 are arranged between the two slotted steel plates 8 at intervals along the horizontal direction, and the horizontal two ends of the horizontal stiffening ribs 10 and the vertical stiffening ribs 12 are respectively connected between the two slotted steel plates 8; the inner surfaces of the horizontal stiffening ribs 10 are also attached to the outer surface of the concrete part of the embedded layer cast-in-place reinforced concrete shear wall 1; the outer side surfaces of the two slotted steel plates 8 on the two outer sides of each vertical stiffening rib 12 are respectively provided with an ear plate 13, the ear plates 13 on the two sides are symmetrically arranged, and the ear plates 13 on the two sides and the corresponding vertical stiffening ribs 12 are positioned on the same vertical plane;

the embedded layer cast-in-place reinforced concrete floor 5 is a cast-in-place plate and mainly comprises concrete, an upper reinforcing mesh and a lower reinforcing mesh which are embedded at the upper part and the lower part in the concrete, the upper reinforcing mesh is mainly composed of a plurality of upper reinforcing steel bars 5.1 which are arranged in parallel at intervals, the upper reinforcing mesh is mainly composed of a plurality of lower reinforcing steel bars 5.2 which are arranged in parallel at intervals, horizontal outlet ribs of the upper reinforcing steel bars 5.1 and the lower reinforcing steel bars 5.2 are connected to a slotted steel plate 8 and pass through a slot opening of the slotted steel plate 8 to be bent and anchored, the embedded layer cast-in-place concrete range is shown in figures 5 and 10 by a diagonal line part, the slotted steel plate 8 is upwards discharged, and cast-in-place concrete 5.3 is poured between the horizontal outlet rib sections of the upper reinforcing steel bars 5.1 and the lower reinforcing steel bars 5.2 and the slotted steel plate 8.

The lower ends of the prefabricated wall unit structures of the initial layer prefabricated wall units 2 are respectively connected with the embedded layer cast-in-place reinforced concrete shear wall 1 and the embedded layer cast-in-place reinforced concrete floor slab 5, the upper ends of the prefabricated wall unit structures of the initial layer prefabricated wall units 2 are connected with the lower ends of the prefabricated wall unit structures of the middle layer prefabricated wall units 3 at the lowest part, the prefabricated wall unit structures of the adjacent middle layer prefabricated wall units 3 are connected, and the upper ends of the prefabricated wall unit structures of the middle layer prefabricated wall units 3 at the uppermost part are connected with the lower ends of the prefabricated wall unit structures of the top layer prefabricated wall units 4 by adopting a steel pipe concrete composite structure. The method specifically comprises the following steps:

the lower end of the lower end strip-shaped steel plate 9 of the prefabricated wall unit structure of the initial layer prefabricated wall unit 2 and the slotted steel plate 8 of the embedded layer cast-in-place reinforced concrete shear wall 1 are parallelly aligned and then are provided with gaps for welding through a groove weld 16, the space enclosed between the slotted steel plate 8 of the embedded layer cast-in-place reinforced concrete shear wall 1, the plate outlet section of the lower end strip-shaped steel plate 9 of the initial layer prefabricated wall unit 2, the horizontal stiffening rib 10 of the prefabricated wall unit structure of the initial layer prefabricated wall unit 2 and the embedded layer cast-in-place reinforced concrete shear wall 1 serves as a cavity, self-compacting concrete 17 is poured in the cavity, and the horizontal stiffening rib in the cavity is welded with a stud 11 on the surface facing the center of the cavity.

Setting a gap for welding through a groove weld 16 after the upper end of an upper end strip steel plate 18 of a prefabricated wall unit structure of an initial layer prefabricated wall unit 2 and the lower end of a lower end strip steel plate 9 of a prefabricated wall unit structure of a lowest middle layer prefabricated wall unit 3 are aligned in parallel, and taking a space enclosed by the upper end strip steel plate 18 of the initial layer prefabricated wall unit 2, a plate outlet section of the lower end strip steel plate 9 of the middle layer prefabricated wall unit 3 and horizontal stiffening ribs 10 of the prefabricated wall unit structures of the initial layer prefabricated wall unit 2 and the middle layer prefabricated wall unit 3 as a cavity, pouring self-compacting concrete 17 in the cavity, and welding studs 11 on the surfaces of the horizontal stiffening ribs in the cavity facing to the center of the cavity;

after the upper ends of the upper end strip-shaped steel plates 18 of the prefabricated wall unit structures of the middle layer prefabricated wall units 3 of the next floor are aligned in parallel with the lower ends of the lower end strip-shaped steel plates 9 of the prefabricated wall unit structures of the middle layer prefabricated wall units 3 of the previous floor, gaps are arranged and welded through groove welding seams 16, a space formed by enclosing the upper end strip-shaped steel plates 18 of the middle layer prefabricated wall units 3 of the next floor, the plate outlet sections of the lower end strip-shaped steel plates 9 of the middle layer prefabricated wall units 3 of the previous floor and the horizontal stiffening ribs 10 of the two middle layer prefabricated wall units 3 of the adjacent floors is used as a cavity, self-compacting concrete 17 is poured in the cavity, and studs 11 are welded on the surfaces of the horizontal stiffening ribs in the cavity, facing to the center of the cavity;

the upper end of an upper end strip steel plate 18 of the prefabricated wall unit structure of the uppermost middle prefabricated wall unit 3 and the lower end of a lower end strip steel plate 9 of the prefabricated wall unit structure of the top prefabricated wall unit 4 are parallelly aligned and then are welded through a groove weld 16, a space formed by enclosing the upper end strip steel plate 18 of the middle prefabricated wall unit 3, the plate outlet section of the lower end strip steel plate 9 of the top prefabricated wall unit 4 and horizontal stiffening ribs 10 of the middle prefabricated wall unit 3 and the top prefabricated wall unit 4 serves as a cavity, self-compacting concrete 17 is poured in the cavity, and studs 11 are welded on the surfaces of the horizontal stiffening ribs in the cavity, facing to the center of the cavity.

The prefabricated wall unit structures between the floors are connected by a steel pipe concrete composite structure, namely, the horizontal plate-out ends of the strip-shaped steel plates 8, 9 and 18 are connected by welding groove welds 16, and self-compacting concrete 17 is poured at the plate-out section.

The prefabricated wall units 2 at the initial layer, the prefabricated wall units 3 at the middle layer and the prefabricated wall units 4 at the top layer of the same floor are all connected through the opening stirrups 21, specifically, the horizontal steel bars 3.2 of the adjacent prefabricated wall unit structures are connected through the opening stirrups 21, the opening directions are changed alternately, and two ends of each opening stirrup 21 are respectively lapped or welded with the two horizontal steel bars 3.2 of the adjacent prefabricated wall unit structures; and self-compacting concrete 17 is poured in the spaces of the horizontal steel bar 3.2 bar sections of the initial layer prefabricated wall unit 2, the middle layer prefabricated wall unit 3 and the top layer prefabricated wall unit 4.

The top of each middle-layer prefabricated wall unit 3 is connected with a middle-layer prefabricated floor slab 6 at one side close to a floor room, the middle-layer prefabricated floor slab 6 mainly comprises concrete, an upper reinforcing mesh and a lower reinforcing mesh which are embedded in the concrete and arranged at the upper part and the lower part, the upper reinforcing mesh mainly comprises a plurality of upper reinforcing steel bars 6.1 which are arranged in parallel at intervals, the upper reinforcing mesh mainly comprises a plurality of lower reinforcing steel bars 6.2 which are arranged in parallel at intervals, the upper reinforcing steel bars 6.1 and the lower reinforcing steel bars 6.2 horizontally protrude out of the outer side surface of an upper end strip-shaped steel plate 18 of the middle-layer prefabricated floor slab 6 and are sealed in an annular mode, post-cast concrete 6.3 is poured between the horizontal protruding section of the upper reinforcing steel bars 6.1 and the lower reinforcing steel bars 6.2 and the upper end strip-shaped steel plate 18, and a detachable hanging template 22 is hung and arranged at the lower parts of the protruding sections of the upper reinforcing steel bars 6.1 and the lower reinforcing steel bars 6.2.

The top of each top-layer prefabricated wall unit 4 is connected with a top-layer prefabricated floor slab 7 at one side close to a floor room, the top-layer prefabricated floor slab 7 mainly comprises concrete, an upper reinforcing mesh and a lower reinforcing mesh which are embedded in the concrete and are arranged at the upper part and the lower part, the upper reinforcing mesh mainly comprises a plurality of upper reinforcing bars 7.1 which are arranged in parallel at intervals, the upper reinforcing mesh mainly comprises a plurality of lower reinforcing bars 7.2 which are arranged in parallel at intervals, the upper reinforcing bars 7.1 and the lower reinforcing bars 7.2 are horizontally led out and connected to the outer side surface of an upper end strip-shaped steel plate 18 of the top-layer prefabricated floor slab 7 and are sealed in an annular mode, post-cast concrete 7.3 is poured between the horizontal led-out sections of the upper reinforcing bars 7.1 and the lower reinforcing bars 7.2 and the upper end strip-shaped steel plate 18, and a detachable hanging template 22 is hung and arranged at the lower parts of the upper reinforcing bars 7.1 and the lower reinforcing bars 7.2.

Before construction, the ear plates 13 at the lower end of the prefabricated wall unit 2 at the starting layer and the ear plates 13 of the embedded layer cast-in-place reinforced concrete shear wall 1, the ear plates 13 at the upper end of the prefabricated wall unit 2 at the starting layer and the ear plates 13 at the lower end of the prefabricated wall unit 3 at the lowest middle layer, the ear plates 13 of the adjacent prefabricated wall units 3 at the middle layers and the ear plates 13 at the upper end of the prefabricated wall unit 3 at the uppermost middle layer and the lower end of the prefabricated wall unit structure of the prefabricated wall unit 4 at the top layer are fixedly connected through mounting bolts 14 and ear plate connecting plates 15.

After the connection lug plates 13 are installed, groove welding 16 welding and self-compacting concrete 17 pouring are carried out.

In the concrete implementation, the construction process of each prefabricated wall unit structure is the same, taking middle-layer prefabricated wall unit 3 as an example, the factory manufacturing process of the prefabricated wall unit structure is as follows:

respectively welding upper horizontal stiffening ribs 10, vertical stiffening ribs 12 and lug plates 13 on a lower end strip-shaped steel plate 9 and an upper end strip-shaped steel plate 18 to form steel components, and obtaining upper and lower end steel components;

classifying and placing finished steel components at the upper end and the lower end for later use;

binding 3.2 horizontal steel bars, 3.1 vertical steel bars, 3.3 vertical steel bars at the end parts and tie bars to form mesh steel bars, and splicing the two mesh steel bars to form a steel bar framework;

inserting the upper and lower end steel assemblies into two ends of the steel reinforcement framework, respectively welding the vertical steel bars 3.1 and the end vertical steel bars 3.3 with the lower end strip-shaped steel plate 9 and the upper end strip-shaped steel plate 18, and fixing the end vertical steel bars 3.3 and the horizontal steel bars 3.2 in a spot welding manner;

supporting a matched steel template for pouring the intermediate-layer prefabricated wall unit 3, and performing key slot or roughness treatment on the left end face and the right end face of the wall unit by using the matched steel template;

sixthly, pouring concrete in the middle of the middle-layer prefabricated wall unit 3, and vibrating to be compact;

seventhly, demolding after the middle-layer prefabricated wall unit 3 is molded and cured;

step eight, welding studs 11 on the horizontal stiffening ribs 10 and the upper end strip-shaped steel plates 18 to complete the prefabrication process of the middle-layer prefabricated wall unit 3;

the prefabrication process of the prefabricated wall units 2 at the initial layer and the prefabricated wall units 4 at the top layer is basically similar, wherein the prefabricated wall units 2 at the initial layer as the initial layer are jointed with steel components which take slotted steel plates 8 as main components and horizontal stiffening ribs 10, vertical stiffening ribs 12, ear plates 13 and studs 11 as accessories in a factory.

In specific implementation, the prefabricated wall unit structure is constructed and installed in the field construction process of the fabricated mixed shear wall:

firstly, as shown in fig. 5 to 11, steel components which take slotted steel plates 8 as main components and horizontal stiffening ribs 10, vertical stiffening ribs 12, ear plates 13 and studs 11 as accessories are pre-embedded in an embedded layer cast-in-place reinforced concrete shear wall 1 and an embedded layer cast-in-place reinforced concrete floor slab 5, so as to complete the construction of two cast-in-place embedded layers;

secondly, conveying finished prefabricated wall unit products to a construction site in batches from bottom to top to wait for installation;

hoisting the prefabricated wall unit 2 of the initial layer, and temporarily fixing the prefabricated wall unit with the embedded layer cast-in-place reinforced concrete shear wall 1 and the embedded layer cast-in-place reinforced concrete floor 5 through the lug plates 13, the lug plate connecting plates 15 and the mounting bolts 14;

fourthly, vertically connecting the plate outlet end of the banded steel plate 9 at the lower end of the prefabricated wall unit 2 at the starting layer with the plate outlet end of the slotted steel plate 8 in the cast-in-place consolidation layer by adopting a groove welding seam 16;

step five, repeating the step three and the step four to finish the vertical installation of the prefabricated wall units 2 of the adjacent initial layers;

step six, horizontally connecting the lower end strip-shaped steel plates 9 and the upper end strip-shaped steel plates 18 of the adjacent initial layer prefabricated wall units 2 by adopting groove welding seams 16;

seventhly, putting the opening stirrups 21 on the reinforcement outlet sections of the horizontal reinforcements 2.2 of the prefabricated wall units 2 on the initial layer, and overlapping or welding the opening stirrups 21 with the horizontal reinforcements 2.2, wherein the opening directions are changed alternately;

step eight, forming a formwork at a rib outlet section of the horizontal steel bars 2.2 of the prefabricated wall unit 2 at the starting layer, and pouring self-compacting concrete 17 to the position close to the horizontal stiffening rib 10 at the upper end of the prefabricated wall unit 2 at the starting layer; and hoisting the prefabricated floor 6, extending the reinforcement outlet ends of the floor steel bars 6.1 and 6.2 to the side of the strip steel plate 18, hanging a detachable hanging template 22 at the lower part of the reinforcement outlet section of the floor, pouring concrete 6.3, and connecting the prefabricated wall unit 2.

Hoisting the intermediate layer prefabricated floor slab 6, wherein the reinforcement outlet ends of floor slab reinforcements 6.1 and 6.2 extend to the outer side surface of the upper end strip-shaped steel plate 18 of the intermediate layer prefabricated wall unit 3, a detachable hanging template 22 is hung on the lower part of the reinforcement outlet section of the floor slab, and concrete 6.3 is poured and connected with the initial layer prefabricated wall unit 2;

step ten, when the self-compacting concrete 17 and the concrete 6.3 reach 70% of the design strength, the detachable hanging template 22 can be demoulded;

step eleven, hoisting the prefabricated middle-layer prefabricated wall unit 3, changing a cast-in-place structure formed by connecting the embedded layer cast-in-place reinforced concrete shear wall 1 and the embedded layer cast-in-place reinforced concrete floor slab 5 into an integral assembly type structure formed by connecting the initial-layer prefabricated wall unit 2 and the middle-layer prefabricated floor slab 6, and repeating the steps from three to ten; the top prefabricated wall unit 4 is similar;

step twelve, dismantling the mounting bolts 14 and the lug plate connecting pieces 15, and cutting off the lug plates 13; and finishing the field construction process of the whole assembly type hybrid shear wall system with the steel pipe concrete connection node.

In specific implementation, in order to greatly shorten the construction period, the strip-shaped steel plate can be thickened and the mounting lug plate can be reinforced so as to provide vertical support; reinforcing the ribbed sections of each layer of the prefabricated floor slabs and welding the ribbed sections with the strip-shaped steel plates to provide horizontal support; assembling and welding prefabricated wall units from bottom to top are completed firstly, and finally concrete is poured and ear plates are cut off.

The implementation and test show that the fabricated mixed shear wall system has the advantages of excellent stress performance, convenient construction, economy and reasonability, breaks through some technical bottlenecks encountered in engineering application of the existing fabricated concrete shear wall, and has higher market popularization value.

Claims (8)

1. The utility model provides a belted steel pipe concrete connected node's assembled mixed shear wall system which characterized in that:

the prefabricated wall mainly comprises a starting layer prefabricated wall unit (2), a middle layer prefabricated wall unit (3) and a top layer prefabricated wall unit (4) which are arranged from bottom to top according to the wall surface; the starting layer prefabricated wall unit (2) is positioned on the wall surface of a starting bottom floor, the top layer prefabricated wall unit (4) is positioned on the wall surface of a top floor, and the middle layer prefabricated wall unit (3) is positioned on any one middle floor wall surface between the bottom floor and the top floor; the prefabricated wall units (2) at the starting floor, the prefabricated wall units (3) at the middle floor and the prefabricated wall units (4) at the top floor are all prefabricated wall unit structures, and the prefabricated wall unit structures at the upper and lower adjacent floors and the prefabricated wall unit structures adjacent to each other in the same floor are all connected;

the prefabricated wall unit structure mainly comprises upper and lower end banded steel plates (9, 18), a steel bar truss and a middle concrete member, wherein the concrete member is a concrete wall positioned in the middle of the prefabricated wall unit structure, the steel bar truss comprises two reticular steel bars which are buried in the concrete member and are respectively arranged on wall surfaces close to two sides of the concrete member, each reticular steel bar is mainly formed by vertically and crossly arranging and welding a plurality of vertical steel bars (3.1) which are arranged in parallel at intervals and a plurality of horizontal steel bars (3.2) which are arranged in parallel at intervals, two horizontal steel bars (3.2) with the same horizontal height of the two reticular steel bars horizontally extend out of the concrete member and are oppositely bent and butted to form a ring-shaped steel bar, one end vertical steel bar (3.3) is arranged at the bending part of the ring-shaped steel bar, the end vertical steel bar (3.3) is also vertically arranged in parallel to the vertical steel bar (3.1), the bending parts of the end vertical steel bars (3.3) and the annular steel bars are welded;

the upper end and the lower end of the concrete member are respectively provided with two upper end strip-shaped steel plates (18) and two lower end strip-shaped steel platesThe middle parts of the two upper end strip-shaped steel plates (18) and the two lower end strip-shaped steel plates (9) are embedded into the concrete member and are respectively welded with the vertical steel bars (3.1) of the two net-shaped steel bars, and the two sides of the upper end strip-shaped steel plates (18) and the lower end strip-shaped steel plates (9) extend out of the concrete member and then are welded with the vertical steel bars (3.3) at the end parts; two upper end banded steel plates (18) parallel arrangement of concrete member upper end, two lower extreme banded steel plates (9) parallel arrangement of concrete member lower extreme, between two upper end banded steel plates (18) and two lower extreme banded steel plates (9) all have along horizontal direction interval arrangement a plurality of horizontal stiffening rib (10) and a plurality of vertical stiffening rib (12), the horizontal both ends of a horizontal stiffening rib (10) and a vertical stiffening rib (12) are connected respectively between the inboard surface of two upper end banded steel plates (18), the horizontal both ends of another horizontal stiffening rib (10) and another vertical stiffening rib (12) are connected respectively between the inboard surface of two lower extreme banded steel plates (9), make between two upper end banded steel plates (18) and between two lower extreme banded steel plates (9)Are all made ofThe horizontal stiffening ribs (10) and the vertical stiffening ribs (12) are connected into a whole; the outer surface of the horizontal stiffening rib (10) is welded with a stud (11);

the outer side surfaces of two upper end strip-shaped steel plates (18)/two lower end strip-shaped steel plates (9) on two outer sides of each vertical stiffening rib (12) are respectively provided with an ear plate (13), and the ear plates (13) on two sides and the corresponding vertical stiffening rib (12) are positioned on the same vertical plane.

2. The fabricated hybrid shear wall system with the concrete-filled steel tube connection node as claimed in claim 1, wherein: the prefabricated wall unit structure of the prefabricated wall unit (2) of the starting layer is completely the same as that of the middle-layer prefabricated wall unit (3), and the prefabricated wall unit structure of the top-layer prefabricated wall unit (4) is different from that of the middle-layer prefabricated wall unit (3) in that the strip-shaped steel plate (19) at the upper end of the outer side far away from one side of the top-layer prefabricated floor slab (7) is taken out and welded with the stud (11) on the outer side surface, and the strip-shaped steel plate (20) at the upper end of the inner side close to one side of the top-layer prefabricated floor slab (7) is not taken out upwards.

3. The fabricated hybrid shear wall system with the concrete-filled steel tube connection node as claimed in claim 1, wherein:

the prefabricated wall unit of the initial floor is characterized in that the lower end of the prefabricated wall unit of the initial floor (2) is connected with the embedded layer cast-in-place reinforced concrete shear wall (1) and the embedded layer cast-in-place reinforced concrete floor (5) below the bottom floor, the prefabricated wall units of the initial floor (2) and the middle layer prefabricated wall units (3) as well as the prefabricated wall units of the middle layers (3) of the upper floor and the lower floor are connected with the prefabricated floor (6) of the middle floor, and the prefabricated wall units of the top layer (4) are connected with the prefabricated floor (7) of the top floor.

4. The fabricated hybrid shear wall system with the concrete-filled steel tube connection node as claimed in claim 3, wherein:

the top of the embedded layer cast-in-place reinforced concrete shear wall (1) is pre-embedded with two slotted steel plates (8) which are parallel and are just opposite to each other and arranged at intervals, the embedded layer cast-in-place reinforced concrete shear wall is in lap welding with vertical steel bars (1.1) inside the embedded layer cast-in-place reinforced concrete shear wall (1), a plurality of horizontal stiffening ribs (10) and a plurality of vertical stiffening ribs (12) are arranged between the two slotted steel plates (8) at intervals along the horizontal direction, and the horizontal two ends of each horizontal stiffening rib (10) and each vertical stiffening rib (12) are respectively connected between the two slotted steel plates (8); the outer side surfaces of the two slotted steel plates (8) at the two outer sides of each vertical stiffening rib (12) are respectively provided with an ear plate (13);

the embedded layer cast-in-place reinforced concrete floor (5) mainly comprises concrete, an upper reinforcing mesh and a lower reinforcing mesh, wherein the upper reinforcing mesh and the lower reinforcing mesh are embedded at the upper part and the lower part in the concrete, the upper reinforcing mesh is mainly composed of a plurality of upper reinforcing steel bars (5.1) which are arranged in parallel at intervals, the upper reinforcing steel bars (5.2) are mainly composed of a plurality of lower reinforcing steel bars (5.2) which are arranged in parallel at intervals, horizontal outlet bars of the upper reinforcing steel bars (5.1) and the lower reinforcing steel bars (5.2) are connected to the slotted steel plates (8) and penetrate through the notches of the slotted steel plates (8) to be bent and anchored, the slotted steel plates (8) are upwards discharged, and cast-in-place concrete (5.3) is poured between the horizontal outlet bar sections of the upper reinforcing steel bars (5.1) and the lower reinforcing steel bars (5.2) and the slotted steel plates (8).

5. The fabricated hybrid shear wall system with the concrete-filled steel tube connection node as claimed in claim 4, wherein:

the lower end of a lower end strip-shaped steel plate (9) of a prefabricated wall unit structure of an initial layer prefabricated wall unit (2) and a slotted steel plate (8) of an embedded layer cast-in-place reinforced concrete shear wall (1) are aligned in parallel, then a gap is arranged and welded through a groove weld seam (16), a space enclosed between the slotted steel plate (8) of the embedded layer cast-in-place reinforced concrete shear wall (1) and a plate outlet section of the lower end strip-shaped steel plate (9) of the initial layer prefabricated wall unit (2) and a horizontal stiffening rib (10) of the prefabricated wall unit structure of the initial layer prefabricated wall unit (2) and the embedded layer cast-in-place reinforced concrete shear wall (1) is used as a cavity, self-compacting concrete (17) is poured in the cavity, and a stud (11) is welded on the surface of the horizontal stiffening rib in the cavity, which faces the center;

after the upper end of an upper end strip-shaped steel plate (18) of a prefabricated wall unit structure of an initial layer prefabricated wall unit (2) and the lower end of a lower end strip-shaped steel plate (9) of a prefabricated wall unit structure of a middle layer prefabricated wall unit (3) are aligned in parallel, a gap is arranged and welded through a groove weld seam (16), a space formed by enclosing the upper end strip-shaped steel plate (18) of the initial layer prefabricated wall unit (2) and the lower end strip-shaped steel plate (9) of the middle layer prefabricated wall unit (3) and a horizontal stiffening rib (10) of the prefabricated wall unit structure of the initial layer prefabricated wall unit (2) and the middle layer prefabricated wall unit (3) is used as a cavity, self-compacting concrete (17) is poured in the cavity, and studs (11) are welded on the surface of the horizontal stiffening rib in the cavity, which faces the center of the cavity;

after the upper ends of the upper end strip-shaped steel plates (18) of the prefabricated wall unit structures of the middle-layer prefabricated wall units (3) of the next floor and the lower ends of the lower end strip-shaped steel plates (9) of the prefabricated wall unit structures of the middle-layer prefabricated wall units (3) of the previous floor are aligned in parallel, gaps are arranged and welded through groove welding seams (16), a space enclosed between the upper end strip-shaped steel plates (18) of the middle-layer prefabricated wall units (3) of the next floor and the plate outlet sections of the lower end strip-shaped steel plates (9) of the middle-layer prefabricated wall units (3) of the previous floor and the horizontal stiffening ribs (10) of the two middle-layer prefabricated wall units (3) of the upper floor and the lower floor is used as a cavity, self-compacting concrete (17) is poured into the cavity, and studs (11) are welded on the surfaces of the horizontal stiffening ribs in the cavity, wherein the horizontal stiffening ribs in the cavity face the center;

the upper end of the upper end strip-shaped steel plate (18) of the prefabricated wall unit structure of the middle-layer prefabricated wall unit (3) and the lower end of the lower end strip-shaped steel plate (9) of the prefabricated wall unit structure of the top-layer prefabricated wall unit (4) are parallelly aligned and then are welded through a groove weld (16), a space formed by enclosing the upper end strip-shaped steel plate (18) of the middle-layer prefabricated wall unit (3), the plate outlet section of the lower end strip-shaped steel plate (9) of the top-layer prefabricated wall unit (4) and the horizontal stiffening ribs (10) of the middle-layer prefabricated wall unit (3) and the top-layer prefabricated wall unit (4) serves as a cavity, self-compacting concrete (17) is poured into the cavity, and studs (11) are welded on the surfaces of the horizontal stiffening ribs in the cavity towards the center.

6. The fabricated hybrid shear wall system with the concrete-filled steel tube connection node as claimed in claim 4, wherein: the prefabricated wall units (2) on the initial floor, the prefabricated wall units (3) on the middle floor and the prefabricated wall units (4) on the top floor on the same floor are all connected through the opening stirrups (21), specifically, the horizontal steel bars (3.2) of the adjacent prefabricated wall unit structures are connected through the opening stirrups (21), and two ends of each opening stirrup (21) are respectively lapped or welded with the two horizontal steel bars (3.2) of the adjacent prefabricated wall unit structures; self-compacting concrete (17) is poured in the spaces of the horizontal steel bar (3.2) bar outlet sections of the initial layer prefabricated wall unit (2), the middle layer prefabricated wall unit (3) and the top layer prefabricated wall unit (4).

7. The fabricated hybrid shear wall system with the concrete-filled steel tube connection node as claimed in claim 4, wherein:

the top of each middle-layer prefabricated wall unit (3) is connected with a middle-layer prefabricated floor slab (6), the middle-layer prefabricated floor slab (6) mainly comprises concrete, an upper reinforcing mesh and a lower reinforcing mesh which are embedded at the upper part and the lower part in the concrete, the upper reinforcing mesh mainly comprises a plurality of upper reinforcing steel bars (6.1) which are arranged in parallel at intervals, the upper reinforcing mesh mainly comprises a plurality of lower reinforcing steel bars (6.2) which are arranged in parallel at intervals, the horizontal outlet ribs of the upper reinforcing steel bars (6.1) and the lower reinforcing steel bars (6.2) are connected to the outer side surface of an upper end strip-shaped steel plate (18) of the middle-layer prefabricated floor slab (6) and are sealed in an annular shape, post-cast concrete (6.3) is poured between the horizontal bar outlet sections of the upper steel bar (6.1) and the lower steel bar (6.2) and the upper end strip-shaped steel plate (18), and the lower parts of the upper reinforcing steel bar (6.1) and the lower reinforcing steel bar (6.2) rib outlet sections are suspended with detachable hanging templates (22);

the top of each top-layer prefabricated wall unit (4) is connected with a top-layer prefabricated floor slab (7), the top-layer prefabricated floor slab (7) mainly comprises concrete, an upper reinforcing mesh and a lower reinforcing mesh which are embedded at the upper part and the lower part in the concrete, the upper reinforcing mesh mainly comprises a plurality of upper reinforcing steel bars (7.1) which are arranged in parallel at intervals, the upper reinforcing mesh mainly comprises a plurality of lower reinforcing steel bars (7.2) which are arranged in parallel at intervals, the upper reinforcing steel bars (7.1) and the lower reinforcing steel bars (7.2) are horizontally connected to the outer side surface of an upper end strip-shaped steel plate (18) of the top-layer prefabricated floor slab (7) and are sealed in an annular shape, post-cast concrete (7.3) is poured between the horizontal bar outlet sections of the upper steel bar (7.1) and the lower steel bar (7.2) and the upper end strip-shaped steel plate (18), and a detachable hanging template (22) is hung and arranged on the lower parts of the upper reinforcing steel bar (7.1) and the lower reinforcing steel bar (7.2) rib outlet sections.

8. The fabricated hybrid shear wall system with the concrete-filled steel tube connection node as claimed in claim 4, wherein:

before construction, the ear plates (13) at the lower end of the prefabricated wall unit (2) at the starting layer and the ear plates (13) of the embedded layer cast-in-place reinforced concrete shear wall (1), the ear plates (13) at the upper end of the prefabricated wall unit (2) at the starting layer and the ear plates (13) at the lower end of the prefabricated wall unit (3) at the middle layer, the ear plates (13) of the adjacent prefabricated wall units (3) at the middle layer and the ear plates (13) at the upper end of the prefabricated wall unit (3) at the middle layer and the lower end of the prefabricated wall unit structure of the prefabricated wall unit (4) at the top layer are fixedly connected through mounting bolts (14) and ear plate connecting plates (15).

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