An assembled concrete shear wall structure with anchor plate steel bar lap connection

Abstract

The present invention provides a prefabricated concrete shear wall structure with anchor plate steel bar overlap connection, which includes an upper shear wall unit and a lower shear wall unit; an upper steel section is embedded in the upper shear wall unit; an upper end plate is arranged at the end of the upper steel section extension section; a lower steel section is embedded in the lower shear wall unit; a lower end plate is arranged at the end of the lower steel section extension section; an upper anchor plate is fixedly arranged at the end of the upper steel bar extension section; a lower anchor plate is fixedly arranged at the end of the lower steel bar extension section; and a first buckle plate is also provided; the first buckle plate includes a connecting hole and a wedge-shaped connecting groove; when connected, the connecting hole is sleeved on the tail of the lower steel bar extension section, and the upper steel bar extension section is slid into the wedge-shaped connecting groove by rotating the first buckle plate; the center line of the wedge-shaped connecting groove is in the form of an involute that gradually increases with the center radius of the connecting hole. The present invention greatly improves the shear resistance and tensile resistance between the two concrete units, and is easy to implement and promote, simple to operate, and highly efficient.

Description

Technical Field

[0001] The invention relates to the technical field of green energy-saving building engineering, and in particular to an assembled concrete shear wall structure with anchor plate reinforcement overlap connection. Background Art

[0002] Since shear wall structures are widely used in my country's medium and high-rise buildings, especially residential buildings with huge construction demand, prefabricated reinforced concrete shear wall structures have become the current development focus of my country, and a variety of representative prefabricated reinforced concrete shear wall structure technology systems have been formed.

[0003] At present, the main connection methods for steel bars in prefabricated reinforced concrete shear wall structures in my country are grouting sleeves and constrained grout anchors. Although relevant studies have shown that the use of sleeve grouting, constrained grout anchors and other methods can meet the requirements of "equivalent to cast-in-place", these two connection methods have disadvantages in terms of cost, precision, construction efficiency, and construction quality, which restrict the development of prefabricated reinforced concrete shear wall structures. Specifically, they are: 1. High processing accuracy requirements, high construction difficulty, and low efficiency. The commonly used connection methods for steel bars in prefabricated reinforced concrete shear wall structures, such as grouting sleeves and constrained grout anchors, have high requirements for the processing accuracy of prefabricated reinforced concrete shear walls. If the position of the steel bars is slightly deviated, it will be difficult for the on-site steel bars to penetrate the sleeves or reserved channels. At the same time, due to the large number of shear wall steel bars and the high-altitude operation, the precision requirements for on-site construction are extremely high. Inserting more than a dozen or even dozens of steel bars into the steel sleeves of prefabricated reinforced concrete shear wall at the same time is like threading a needle with several tons of heavy objects in the air, resulting in a series of specific problems and implementation costs such as high construction difficulty, high labor costs of professional teams, high measures costs, waste parts, and broken steel bars. The advantage of prefabricated buildings is that they can improve on-site construction efficiency. However, due to the low processing precision of prefabricated components, the lack of industrial workers, and the difficulty of construction, in actual projects, it is often the case that the construction speed of prefabricated concrete shear wall structures is slower than that of cast-in-place structures. 2. Grouting connection is a concealed project and quality assurance is difficult. After the protruding steel bars of the lower prefabricated reinforced concrete shear wall are inserted into the reserved sleeves or holes of the upper prefabricated reinforced concrete shear wall, high-strength grouting materials need to be poured into them. Since this process has high operating requirements and is a concealed project, the construction quality of grouting is difficult to guarantee, and even if problems are found, it is difficult to remedy them, and there are certain safety hazards. Moreover, there is currently a lack of effective means to detect the quality of grouting. Summary of the invention

[0004] The purpose of the present invention is to provide a prefabricated concrete shear wall structure with anchor plate reinforcement lap connection to solve at least one of the above-mentioned technical problems existing in the prior art. This application is a divisional application of the patent with application number 2022106692424, application date June 14, 2022, and name "A prefabricated reinforced concrete shear wall structure and prefabricated shear wall unit".

[0005] In order to solve the above technical problems, the present invention provides an assembled concrete shear wall structure with anchor plate reinforcement overlap connection, comprising: an upper shear wall unit and a lower shear wall unit;

[0006] An upper steel section is embedded in the upper shear wall unit; an extended section of the upper steel section extends from the connection end of the upper shear wall unit, and an upper end plate is provided at the end of the extended section of the upper steel section;

[0007] A lower steel section is embedded in the lower shear wall unit; an extended section of the lower steel section extends from the connecting end of the lower shear wall unit, and a lower end plate is provided at the end of the extended section of the lower steel section;

[0008] The upper shear wall unit and the lower shear wall unit are butt-jointed, the upper end plate and the lower end plate are fixedly connected, and the upper steel section and the lower steel section further form an integrally arranged load-bearing frame;

[0009] Concrete is poured between the upper shear wall unit and the lower shear wall unit to form a cast-in-place concrete unit.

[0010] Preferably, bolt holes are provided on the upper end plate and the lower end plate, and the two are fixedly connected by bolts. Of course, the two can also be fixedly connected by welding or riveting.

[0011] Furthermore, an upper steel bar is embedded in the upper shear wall unit, and an extended section of the upper steel bar extends from the connection end of the upper shear wall unit; an upper anchor plate is fixedly provided at the end of the extended section of the upper steel bar;

[0012] A lower steel bar is embedded in the lower shear wall unit, and the lower steel bar extension section extends from the connection end of the lower shear wall unit; a lower anchor plate is fixedly provided at the end of the lower steel bar extension section;

[0013] When the upper shear wall unit and the lower shear wall unit are butt-jointed, the upper steel bar extension section and the lower steel bar extension section are indirectly overlapped and embedded in the cast-in-place concrete unit.

[0014] Furthermore, the upper anchor plate is vertically arranged to the upper steel bar extended section; the lower anchor plate is vertically arranged to the lower steel bar extended section.

[0015] Furthermore, the upper anchor plate and the lower anchor plate are square, diamond or circular plates.

[0016] Preferably, the (plate surface) area of ​​the upper anchor plate and the lower anchor plate is greater than or equal to 6 times the cross-sectional area of ​​the upper steel bars and the lower steel bars, respectively.

[0017] Furthermore, the surfaces of the connection end faces of the upper shear wall unit and the lower shear wall unit are roughened to strengthen the connectivity between the upper shear wall unit and the lower shear wall unit and the cast-in-place concrete unit.

[0018] Furthermore, restraining stirrups or a steel skeleton are arranged inside the cast-in-place concrete unit and around the upper steel bar extension section and the lower steel bar extension section.

[0019] The restraining stirrups can be in the form of rectangular stirrups or spiral stirrups. The stirrups restrain the concrete in the overlap area, which can improve the anchoring performance of the steel bars in the cast-in-place concrete unit, thereby improving the force transmission performance of the steel bar connection joint. The stirrup spacing is within 40mm to 100mm, which not only meets the maximum aggregate particle size requirements of the concrete, but also has a strong restraining effect on the core concrete.

[0020] Preferably, the spacing of the steel bars constraining the stirrups or steel skeleton is within 40 mm to 60 mm, which not only meets the maximum aggregate particle size requirement of the concrete, but also has a strong restraining effect on the core concrete.

[0021] Furthermore, the upper shear wall unit and the lower shear wall unit are precast concrete shear walls.

[0022] Furthermore, the upper anchor plate and the lower anchor plate are respectively fixed to the upper steel bar extension section and the lower steel bar extension section by means of perforation plug welding or threaded connection.

[0023] Furthermore, each of the upper steel bar extension sections includes a plurality of upper anchor plates spaced apart in the axial direction;

[0024] And / or, each of the lower steel bar extension sections includes a plurality of the lower anchor plates spaced apart along the axial direction.

[0025] Arranging 2-5 or even more anchor plates along the axial direction of the steel bar can further improve the anchoring performance of the steel bar, thereby improving the force transmission performance of the indirect lap steel bar. The distance between the steel bar anchor plates can be designed according to the specific project conditions to achieve optimal performance.

[0026] Furthermore, it also includes a spiral steel bar that is sleeved outside the upper steel bar extension section or the lower steel bar extension section; one end of the spiral steel bar is pre-embedded in the upper shear wall unit or the lower shear wall unit, and the other end of the spiral steel bar extends out of the end face of the upper shear wall unit or the lower shear wall unit; when the upper shear wall unit and the lower shear wall unit are butt-jointed, the lower steel bar extension section or the upper steel bar extension section is inserted into the spiral steel bar from the outside.

[0027] After pouring concrete between the upper shear wall unit and the lower shear wall unit, the spiral steel bar is buried in the cast-in-place concrete unit. The spiral steel bar restrains the concrete in the overlapped area, further improving the force transmission performance of the steel bar connection joint.

[0028] Furthermore, it also includes an outer sleeve sleeved outside the upper steel bar extension section or the lower steel bar extension section; one end of the outer sleeve is pre-buried in the upper shear wall unit or the lower shear wall unit, and the other end of the outer sleeve extends out of the end surface of the upper shear wall unit or the lower shear wall unit; when the upper shear wall unit and the lower shear wall unit are butt-jointed, the lower steel bar extension section or the upper steel bar extension section is inserted into the outer sleeve from the outside. It is used to enhance the restraint effect on the core concrete of the cast-in-place concrete unit and further improve the force transmission performance of the steel bar connection joint.

[0029] Furthermore, the outer sleeve is a steel pipe, a metal bellows or an FRP pipe.

[0030] In addition, the present application also discloses a prefabricated shear wall unit, which includes: a wall body and built-in steel sections;

[0031] The upper and lower end surfaces of the wall are respectively provided with extended sections of built-in steel sections, and the ends of the extended sections of built-in steel sections are provided with connecting end plates.

[0032] Furthermore, in the height direction, the built-in steel sections are arranged along the height direction of the wall, and the upper and lower ends of the built-in steel sections extend out of the upper and lower end surfaces of the wall respectively.

[0033] Furthermore, the built-in steel sections may not be arranged along the entire height of the wall, but may be buried inward to a certain depth on the upper and lower surfaces of the wall, thereby saving steel consumption.

[0034] Furthermore, the built-in steel section is provided with a shear connection key on the inner side section inside the wall; the shear connection key includes but is not limited to studs or PBL shear connection keys, etc., which strengthen the interaction between the built-in steel section and concrete and increase the structural integrity.

[0035] Furthermore, it also includes built-in steel bars, and the upper and lower end faces of the wall are respectively provided with extended sections of the built-in steel bars, and the ends of the extended sections of the built-in steel bars are provided with anchor plates.

[0036] Furthermore, a plurality of anchor plates are arranged on the extended section of the built-in steel bar and are spaced apart along the axial direction.

[0037] Furthermore, the upper end face or the lower end face of the wall is also provided with a spiral steel bar; the spiral steel bar is sleeved outside the built-in steel bar; one end of the spiral steel bar is embedded in the wall, and the other end of the spiral steel bar extends out of the wall end face.

[0038] When two adjacent prefabricated shear wall units are butt-jointed, the inner steel bar extension section of one prefabricated shear wall unit is inserted from the outside into the spiral steel bar on the other prefabricated shear wall unit.

[0039] Furthermore, an outer sleeve is provided on the upper end face or the lower end face of the wall; the outer sleeve is sleeved outside the built-in steel bars; one end of the outer sleeve is embedded in the wall, and the other end of the outer sleeve extends out of the end face of the wall.

[0040] When two adjacent prefabricated shear wall units are butt-jointed, the inner steel bar extension section of one prefabricated shear wall unit is inserted from the outside into the outer sleeve on the other prefabricated shear wall unit.

[0041] Furthermore, the outer sleeve is a steel pipe, a metal bellows or an FRP pipe.

[0042] By adopting the above technical solution, the present invention has the following beneficial effects:

[0043] The present invention provides an assembled reinforced concrete shear wall structure, which realizes the efficient connection of the pre-buried steel bars of the shear wall; adopts the cast-in-place construction method, eliminates the hidden sleeve grouting and constrained grouting works, is intuitive to operate, and is easy to inspect for quality, and can effectively ensure the construction quality of the steel bar joints; eliminates the construction steps of on-site steel bar positioning and punching, improves the construction error tolerance, reduces the construction difficulty, and improves the construction efficiency.

[0044] The invention has the following beneficial effects:

[0045] 1. The novel assembled reinforced concrete shear wall horizontal joint structure proposed in the present invention can realize the efficient connection of assembled shear wall units, and has the characteristics of high degree of factory prefabrication and less on-site wet work.

[0046] 2. In the new prefabricated reinforced concrete shear wall structure, the steel structure is wrapped in concrete, which can improve the fire resistance and anti-corrosion performance of the structure and reduce the subsequent fire resistance and anti-corrosion construction costs.

[0047] 3. Compared with the existing technology, the connection of the horizontal joints of the new prefabricated reinforced concrete shear wall adopts the cast-in-place construction method, which eliminates the hidden grouting project and can effectively ensure the construction quality of the steel bar connection at the horizontal joints.

[0048] 4. Since the hidden grouting project is cancelled, there is no need to reserve grouting channels for prefabricated components, and the processing cost of prefabricated components is reduced.

[0049] 5. The cast-in-place construction method is adopted on site, which does not require additional grouting materials and professional grouting workers, saving on-site construction costs.

[0050] 6. Compared with the existing technology, the connection of the horizontal joints of the new prefabricated reinforced concrete shear wall does not require the construction steps of on-site steel bar positioning holes. The vertical connection of the prefabricated shear wall unit uses indirect steel bar lap joints as the basic structural form, which improves the construction error tolerance and improves the construction efficiency.

[0051] 7. The basic structural form of indirect lap joint of steel bars is a very mature steel bar connection method with mature on-site construction experience. The construction quality can be well guaranteed, and a series of specific problems such as waste parts and broken bars are also improved, which not only improves construction efficiency but also reduces construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0053] Figure 1 A schematic structural diagram of a prefabricated shear wall unit provided in Example 1 of the present invention;

[0054] Figure 2 This is a structural schematic diagram of a second implementation mode of a prefabricated shear wall unit in Example 1 of the present invention;

[0055] Figure 3 This is a structural schematic diagram of a third implementation mode of a prefabricated shear wall unit in Example 1 of the present invention;

[0056] Figure 4 This is a schematic diagram of the structure of a wall when a steel beam is preset in Embodiment 1 of the present invention;

[0057] Figure 5 A schematic structural diagram of an assembled reinforced concrete shear wall structure provided in Example 2 of the present invention;

[0058] Figure 6 A partial schematic diagram of an assembled reinforced concrete shear wall structure provided in Example 2 of the present invention;

[0059] Figure 7 It is a partial schematic diagram of a shear wall structure when restrained stirrups are provided in Embodiment 2 of the present invention;

[0060] Figure 8 is a three-dimensional diagram of a steel bar connection structure in Example 3 of the present invention;

[0061] Fig. 9 This is a schematic structural diagram of the first gusset plate in Embodiment 3 of the present invention;

[0062] Fig.10 It is a three-dimensional diagram of the steel bar connection structure in Example 4 of the present invention;

[0063] Fig.11 This is a schematic structural diagram of the first gusset plate in Embodiment 4 of the present invention;

[0064] Fig.12 It is a three-dimensional diagram of the steel bar connection structure in Example 5 of the present invention.

[0065] Reference numerals:

[0066] 10-wall; 20-internal steel; 21-extension section of steel; 22-connection end plate; 30-internal steel bar; 31-extension section of steel bar; 32-anchor plate; 40-spiral steel bar; 41-outer casing; 42-steel beam; 43-restraint stirrups; 50-cast-in-place concrete unit; 60-first gusset plate; 61-connection hole; 62-wedge-shaped connection groove; 63-card slot; 60a-second gusset plate; 64-U-shaped long groove;

[0067] 10a-upper shear wall unit; 10b-lower shear wall unit; 20a-upper profile steel; 21a-upper profile steel extension section; 22a-upper end plate; 20b-lower profile steel; 21b-lower profile steel extension section; 22b-lower end plate; 30a-upper reinforcement; 31a-upper reinforcement extension section; 32a-upper anchor plate; 30b-lower reinforcement; 31b-lower reinforcement extension section; 32b-lower anchor plate; 33b-tail. DETAILED DESCRIPTION

[0068] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "upper", "lower", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0070] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] The present invention is further explained below in conjunction with specific implementation modes.

[0072] Example 1

[0073] like Figure 1 As shown, the present embodiment provides a prefabricated shear wall unit, which includes: a wall 10 and an internal steel section 20; the upper and lower end surfaces of the wall 10 are respectively provided with a steel section extension section 21 of the internal steel section 20, and the end of the steel section extension section 21 is provided with a connecting end plate 22. The connecting end plate 22 is horizontally arranged and used for connecting and fixing two adjacent walls 10 above and below.

[0074] In the height direction, the built-in steel section 20 is arranged along the height direction of the wall 10, and the steel extension sections 21 at the upper and lower ends of the built-in steel section 20 extend out of the upper and lower end surfaces of the wall 10 respectively. Alternatively, the built-in steel section 20 may not be arranged along the height direction of the wall 10, but only buried inward to a certain depth on the upper and lower surfaces of the wall 10 to save steel. More preferably, the built-in steel section 20 is provided with a shear connection key (not shown) on the inner section of the wall 10; the shear connection key includes but is not limited to a stud or a PBL shear connection key, etc., to strengthen the interaction between the built-in steel section 20 and the concrete and increase the integrity of the structure.

[0075] This embodiment further includes built-in steel bars 30 . The upper and lower end surfaces of the wall 10 are respectively provided with steel bar extension sections 31 of the built-in steel bars 30 . Anchor plates 32 are provided at the ends of the steel bar extension sections 31 .

[0076] The number of anchor plates 32 on each steel bar extension section 31 is set according to needs, and preferably, 2-5 anchor plates 32 are provided and spaced apart along the axial direction.

[0077] Based on the above technical solution, optionally and more preferably, Figure 2 As shown, the upper end face or the lower end face of the wall 10 is further provided with a spiral steel bar 40; the spiral steel bar 40 is sleeved outside the internal steel bar 30; one end of the spiral steel bar 40 is pre-buried in the wall 10, and the other end of the spiral steel bar 40 extends out of the end face of the wall 10. When two adjacent prefabricated shear wall units are butt-jointed, the steel bar extension section 31 of one prefabricated shear wall unit is inserted from the outside into the spiral steel bar 40 on the other prefabricated shear wall unit.

[0078] Alternatively, based on the above technical solution, optionally and more preferably, Figure 3 As shown, the upper end face or the lower end face of the wall 10 is also provided with an outer sleeve 41; the outer sleeve 41 is sleeved outside the internal steel bar 30; one end of the outer sleeve 41 is pre-buried in the wall 10, and the other end of the outer sleeve 41 extends out of the end face of the wall 10. When two adjacent prefabricated shear wall units are butt-jointed, the steel bar extension section 31 of one prefabricated shear wall unit is inserted from the outside into the outer sleeve 41 on the other prefabricated shear wall unit. The outer sleeve 41 is a steel pipe, a metal corrugated pipe or an FRP pipe.

[0079] Reference Figure 4 As shown, more preferably, a steel beam 42 is preset in the wall 10, and the steel beam 42 extends from the left and right sides of the wall 10, which can be used to fix the walls 10 arranged side by side, or to facilitate the connection and fixation between the wall 10 and the frame beam, and can also be connected with the concrete floor to form a combined floor structure. Preferably, the steel beam 42 passes through the wall 10 in the horizontal direction, thereby improving the strength of the entire wall 10.

[0080] The novel prefabricated reinforced concrete shear wall horizontal joint structure proposed in the present invention can realize the efficient connection of prefabricated shear wall units, and at the same time has the characteristics of high factory prefabrication and less on-site wet work. Compared with the prior art, the connection of the novel prefabricated reinforced concrete shear wall horizontal joint adopts a cast-in-place construction method, eliminating the hidden grouting project, which can effectively ensure the construction quality of the steel bar connection at the horizontal joint. In addition, since the hidden grouting project is eliminated, the prefabricated components do not need to reserve grouting channels, and the processing cost of the prefabricated components is reduced.

[0081] Example 2

[0082] Reference Figure 5 and 6 As shown, this embodiment discloses an assembled reinforced concrete shear wall structure, including: an upper shear wall unit 10a and a lower shear wall unit 10b.

[0083] An upper steel section 20a is embedded in the upper shear wall unit 10a; an upper steel section extending section 21a extends from the connection end of the upper shear wall unit 10a, and an upper end plate 22a is provided at the end of the upper steel section extending section 21a; a lower steel section 20b is embedded in the lower shear wall unit 10b; a lower steel section extending section 21b extends from the connection end of the lower shear wall unit 10b, and a lower end plate 22b is provided at the end of the lower steel section extending section 21b; the upper shear wall unit 10a and the lower shear wall unit 10b are butt-jointed, the upper end plate 22a and the lower end plate 22b are fixedly connected, and the upper steel section 20a and the lower steel section 20b further form an integrally arranged load-bearing skeleton; concrete is poured between the upper shear wall unit 10a and the lower shear wall unit 10b to form a cast-in-place concrete unit 50.

[0084] Preferably, bolt holes are provided on the upper end plate 22a and the lower end plate 22b, and the two are fixedly connected by bolts, or can be fixedly connected by welding or riveting.

[0085] More preferably, an upper steel bar 30a is embedded in the upper shear wall unit 10a, and an upper steel bar extending section 31a extends from the connecting end of the upper shear wall unit 10a; an upper anchor plate 32a is fixedly provided at the end of the upper steel bar extending section 31a; a lower steel bar 30b is embedded in the lower shear wall unit 10b, and a lower steel bar extending section 31b extends from the connecting end of the lower shear wall unit 10b; a lower anchor plate 32b is fixedly provided at the end of the lower steel bar extending section 31b; when the upper shear wall unit 10a and the lower shear wall unit 10b are butt-jointed, the upper steel bar extending section 31a and the lower steel bar extending section 31b are indirectly overlapped and embedded in the cast-in-place concrete unit 50.

[0086] Among them, the upper anchor plate 32a is vertically arranged with the upper steel bar extension section 31a; the lower anchor plate 32b is vertically arranged with the lower steel bar extension section 31b. The upper anchor plate 32a and the lower anchor plate 32b are square, diamond or circular plate bodies. Preferably, the (plate surface) area of ​​the upper anchor plate 32a and the lower anchor plate 32b is respectively greater than or equal to 6 times the cross-sectional area of ​​the upper steel bar 30a and the lower steel bar 30b. And, the surface of the connecting end surface of the upper shear wall unit 10a and the lower shear wall unit 10b is roughened to strengthen the connectivity between the upper shear wall unit 10a and the lower shear wall unit 10b and the cast-in-place concrete unit 50.

[0087] Preferably, the present embodiment further includes a spiral reinforcement 40 which is sleeved on the outside of the upper reinforcement extension section 31a or the lower reinforcement extension section 31b; one end of the spiral reinforcement 40 is pre-buried in the upper shear wall unit 10a or the lower shear wall unit 10b, and the other end of the spiral reinforcement 40 extends out of the end face of the upper shear wall unit 10a or the lower shear wall unit 10b; when the upper shear wall unit 10a and the lower shear wall unit 10b are butt-jointed, the lower reinforcement extension section 31b or the upper reinforcement extension section 31a is inserted from the outside into the spiral reinforcement 40. After pouring concrete between the upper shear wall unit 10a and the lower shear wall unit 10b, the spiral reinforcement 40 is buried in the cast-in-place concrete unit. The spiral reinforcement 40 constrains the concrete in the overlap area, further improving the force transmission performance of the reinforcement connection joint. Refer to Figure 4 As shown, the spiral reinforcement 40 can also be replaced by an outer sleeve 41 in the form of a steel pipe, a metal corrugated pipe or an FRP pipe.

[0088] Reference Figure 7As shown, optionally, constraining stirrups 43 (or steel skeleton) are provided inside the cast-in-place concrete unit 50 and around the upper steel bar extension section 31a and the lower steel bar extension section 31b. The constraining stirrups 43 can be in the form of rectangular stirrups or spiral stirrups. The stirrups constrain the concrete in the overlap area, which can improve the anchoring performance of the steel bars in the cast-in-place concrete unit 50, thereby improving the force transmission performance of the steel bar connection joint. The spacing between the stirrups is within 40mm to 100mm, which not only meets the maximum aggregate particle size requirements of the concrete, but also has a strong restraining effect on the core concrete. Preferably, the spacing between the restraining stirrups 43 or the steel skeleton is within 40mm to 60mm, which not only meets the maximum aggregate particle size requirements of the concrete, but also has a strong restraining effect on the core concrete.

[0089] The upper anchor plate 32a and the lower anchor plate 32b are respectively fixed on the upper steel bar extension section 31a and the lower steel bar extension section 31b by plug welding or threaded connection. Each upper steel bar extension section 31a may include a plurality of upper anchor plates 32a arranged at intervals along the axial direction; each lower steel bar extension section 31b may include a plurality of lower anchor plates 32b arranged at intervals along the axial direction. For example, 2-5 or even more anchor plates are arranged along the axial direction of the steel bar, which can further improve the anchoring performance of the steel bar, and thus improve the force transmission performance of the indirect lap steel bar. The distance between the steel bar anchor plates can be designed according to the specific engineering conditions to achieve optimal performance.

[0090] The present invention provides an assembled reinforced concrete shear wall structure, which realizes the efficient connection of the pre-buried steel bars of the shear wall; adopts the cast-in-place construction method, eliminates the hidden sleeve grouting and constrained grouting works, is intuitive to operate, and is easy to inspect for quality, and can effectively ensure the construction quality of the steel bar joints; eliminates the construction steps of on-site steel bar positioning and punching, improves the construction error tolerance, reduces the construction difficulty, and improves the construction efficiency.

[0091] Example 3

[0092] This embodiment is basically the same as Embodiment 2, except that:

[0093] Reference Figure 8 As shown, this embodiment also includes a first gusset plate 60 for connecting two adjacent upper steel bar extension sections 31a and lower steel bar extension sections 31b.

[0094] Reference Fig. 9As shown, the first gusset plate 60 includes a connection hole 61 and a wedge-shaped connection groove 62 (a connection groove with a larger opening). The lower steel bar extension section 31b (or the upper steel bar extension section 31a) is provided with a protruding tail 33b on the outer side of the lower anchor plate 32b (or the upper anchor plate 32a). When connected, the connection hole 61 is sleeved on the tail 33b of the lower steel bar extension section 31b. By rotating the first gusset plate 60, the upper steel bar extension section 31a slides into the wedge-shaped connection groove 62. The center line of the wedge-shaped connection groove 62 is in the form of an involute that gradually increases with the center radius of the connection hole 61. The wedge-shaped connection groove 62 has a large opening and a narrow bottom. When the upper steel bar extension section 31a slides into the wedge-shaped connection groove 62, it is gradually clamped or pressed against a side wall of the wedge-shaped connection groove 62, thereby realizing a rigid connection between the upper steel bar extension section 31a and the lower steel bar extension section 31b in the transverse direction, thereby increasing the shear force transmission capacity of the two.

[0095] Furthermore, locking grooves 63 are arranged at intervals on the side walls on the left and right sides of the wedge-shaped connecting groove 62. After the upper steel bar extending section 31a slides into the locking groove 63, the upper steel bar extending section 31a is further locked to increase the connection strength between the two.

[0096] Example 4

[0097] This embodiment is basically the same as Embodiment 3, except that:

[0098] Reference Fig.10 As shown, in this embodiment, a second gusset plate 60a is included for connecting two adjacent upper reinforcement extension sections 31a and lower reinforcement extension sections 31b. The two ends of the second gusset plate 60a are clamped between the two upper anchor plates 32a and the two lower anchor plates 32b, respectively. Thus, a rigid or semi-rigid connection between the upper reinforcement extension section 31a and the lower reinforcement extension section 31b in the axial direction is achieved, further increasing the connection force between the upper and lower concrete units.

[0099] Reference Fig.11 As shown, the second clip plate 60a includes two U-shaped long grooves 64 arranged perpendicular to each other. The two U-shaped long grooves 64 arranged perpendicular to each other make the second clip plate 60a of this embodiment very versatile. Even if the distance between the upper steel bar extending section 31a and the lower steel bar extending section 31b varies greatly, the same second clip plate 60a can be used to quickly realize the connection between two adjacent upper steel bar extending sections 31a and lower steel bar extending sections 31b.

[0100] Example 5

[0101] Reference Fig.12 As shown, in this embodiment, two adjacent upper steel bar extension sections 31a and lower steel bar extension sections 31b are directly connected by a first gusset plate 60 and a second gusset plate 60a.

[0102] Two upper anchor plates 32a are arranged at intervals on the upper steel bar extending section 31a; lower anchor plates 32b are arranged at intervals on the lower steel bar extending section 31b, and the lower steel bar extending section 31b is provided with a tail 33b on the outer side of the lower anchor plate 32b, one end of the first buckle plate 60 is mounted on the tail 33b of the lower steel bar extending section 31b through a connecting hole 61, and the other end of the first buckle plate 60 is connected to the upper steel bar extending section 31a through a wedge-shaped connecting groove 62.

[0103] The second clip plate 60a is connected to the upper steel bar extension section 31a and the lower steel bar extension section 31b respectively through the U-shaped long grooves 64 at both ends, and the two ends of the second clip plate 60a are clamped between the two upper anchor plates 32a and the two lower anchor plates 32b respectively.

[0104] This embodiment combines the advantages of the connection structures of Embodiments 4 and 5, greatly improves the shear resistance and tensile resistance between the two concrete units, is easy to implement and promote, is simple to operate, and is highly efficient.

[0105] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An assembled concrete shear wall structure with anchor plate reinforcement lap connection, characterized in that: include: upper shear wall unit and lower shear wall unit; An upper steel section is embedded in the upper shear wall unit; an extended section of the upper steel section extends from the connection end of the upper shear wall unit, and an upper end plate is provided at the end of the extended section of the upper steel section; A lower steel section is embedded in the lower shear wall unit; an extended section of the lower steel section extends from the connecting end of the lower shear wall unit, and a lower end plate is provided at the end of the extended section of the lower steel section; The upper shear wall unit and the lower shear wall unit are butt-jointed, the upper end plate and the lower end plate are fixedly connected, and the upper steel section and the lower steel section further form an integrally arranged load-bearing frame; Concrete is poured between the upper shear wall unit and the lower shear wall unit to form a cast-in-place concrete unit; An upper steel bar is embedded in the upper shear wall unit, and an extended section of the upper steel bar extends from the connection end of the upper shear wall unit; an upper anchor plate is fixedly provided at the end of the extended section of the upper steel bar; A lower steel bar is embedded in the lower shear wall unit, and an extended section of the lower steel bar extends from the connection end of the lower shear wall unit; a lower anchor plate is fixedly provided at the end of the extended section of the lower steel bar; When the upper shear wall unit and the lower shear wall unit are butt-jointed, the upper steel bar extension section and the lower steel bar extension section are indirectly overlapped and buried in the cast-in-place concrete unit; It also includes a first gusset plate for connecting two adjacent upper steel bar extension sections and a lower steel bar extension section; the first gusset plate includes a connection hole and a wedge-shaped connection groove; wherein the lower steel bar extension section is provided with a protruding tail portion on the outer side of the lower anchor plate, and when connected, the connection hole is sleeved on the tail portion of the lower steel bar extension section, and the upper steel bar extension section is slid into the wedge-shaped connection groove by rotating the first gusset plate; The center line of the wedge-shaped connecting groove is in the form of an involute that gradually increases with the center radius of the connecting hole.

2. The shear wall structure according to claim 1, characterized in that: The wedge-shaped connection groove has a large opening and a narrow groove bottom. The extended section of the upper steel bar is gradually clamped or pressed against a side wall of the wedge-shaped connection groove during the process of sliding into the wedge-shaped connection groove.

3. The shear wall structure according to claim 1, characterized in that: The side walls on the left and right sides of the wedge-shaped connecting groove are provided with clamping grooves at intervals. After the upper steel bar extending section slides into the clamping groove, the upper steel bar extending section is further locked.

4. The shear wall structure according to claim 1, characterized in that: It also includes a second gusset plate for connecting two adjacent upper steel bar extension sections and lower steel bar extension sections; two ends of the second gusset plate are respectively clamped between the two upper anchor plates and the two lower anchor plates.

5. The shear wall structure according to claim 4, characterized in that: The second gusset plate includes two U-shaped long grooves arranged perpendicular to each other.

6. The shear wall structure according to claim 4, characterized in that: Two adjacent upper steel bar extension sections and lower steel bar extension sections are directly connected through a first buckle plate and a second buckle plate; Two upper anchor plates are arranged at intervals on the upper steel bar extension section; lower anchor plates are arranged at intervals on the lower steel bar extension section, and the lower steel bar extension section is provided with a tail portion on the outer side of the lower anchor plate, one end of the first gusset plate is sleeved on the tail portion of the lower steel bar extension section through a connecting hole, and the other end of the first gusset plate is connected to the upper steel bar extension section through a wedge-shaped connecting groove; The second gusset plate is connected to the upper steel bar extension section and the lower steel bar extension section respectively through the U-shaped long grooves at both ends, and the two ends of the second gusset plate are clamped between the two upper anchor plates and the two lower anchor plates respectively.

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