Full-prefabricated shear wall structure system with edge component steel bars connected in staggered mode and construction method of full-prefabricated shear wall structure system

Abstract

The invention discloses an edge member reinforcing steel bar staggered connection full-prefabricated shear wall structure system and a construction method thereof, the upper area of an edge member and a middle wallboard form an integrated prefabricated structure to form a prefabricated part of the edge member, and a cast-in-place cavity with a trapezoidal section is reserved in the lower area of the edge member; the compactness of concrete in a cast-in-place cavity can be effectively improved, so that the connecting strength of two adjacent layers of prefabricated shear walls is improved, meanwhile, a connecting beam joint groove is reserved in the top of the edge component, and a connecting beam can be erected in the connecting beam joint groove, so that the in-place precision and the construction efficiency of the connecting beam are improved, and the construction cost is reduced. The butt joint structures of the prefabricated shear walls on the same layer are rapidly connected with the embedded parts at the side ends of the prefabricated wall bodies, effective connection of the wall bodies on the same layer is achieved, all components are prefabricated, on-site wet construction is reduced to the maximum extent, full-prefabricated building of the shear wall structure is formed, and the construction efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering, and in particular to a fully prefabricated shear wall structure system with staggered edge member steel bar connections. Background Art

[0002] Traditional prefabricated shear wall vertical reinforcement connections mostly use wet connection methods, such as sleeve grouting, grout-anchor lap joints, etc., which have low construction efficiency. The SGBL structural system, that is, the vertical distributed reinforcement is not connected to assemble the integral shear wall structural system. The vertical reinforcement of the shear wall is disconnected at the floor slab, and the length and reinforcement amount of the cast-in-place edge components at both ends are increased to ensure the realization of the bearing capacity. The upper and lower prefabricated wall panels are connected by extrusion mortar at the floor level to ensure the overall performance of the shear wall structural system.

[0003] Chinese patent publication number CN 220598827 U discloses a prefabricated, assembled, monolithic concrete shear wall structure comprising a prefabricated shear wall, an ultra-high-performance concrete post-cast joint, a mortar layer, and a floor slab. The vertical distributed reinforcement in the center of the prefabricated shear wall is configured using a minimum reinforcement ratio. The vertical distributed reinforcement at the bottom of the wall does not extend beyond the prefabricated wall and is disconnected at the horizontal joint with the lower floor slab. The longitudinal reinforcement within the edge members of the shear wall is increased in area based on the principle of equal bending strength. The longitudinal reinforcement of the edge members of the upper and lower shear walls is connected by staggered, inter-anchored ultra-high-performance concrete. By strengthening the longitudinal reinforcement at the edge of the prefabricated shear wall, the vertical distributed reinforcement in the center of the shear wall is disconnected.

[0004] The above scheme provides a solution for connecting horizontal joints between layers of prefabricated shear walls. During on-site construction, in addition to being connected to the wall at the bottom, the top of the prefabricated shear wall will be connected to the connecting beam, and the two sides will be connected to the side walls through vertical joints. The vertical joints of the shear wall structure are usually connected by post-cast edge components. However, the edge components of the existing SGBL structure prefabricated shear wall are prefabricated at full height, and the components need to be connected by close-jointed joints. As a result, when the prefabricated shear wall is connected to the top connecting beam and the side wall, the connecting beam and the side wall are difficult to position, and the connection structure is complicated and cumbersome, which not only increases the time cost of construction and extends the overall construction period, but also has low connection strength, resulting in poor overall construction quality of the prefabricated shear wall.

[0005] Therefore, how to effectively improve the overall connection strength and construction quality of the prefabricated shear walls of the SGBL structural system and shorten the construction period has become an urgent problem to be solved in this field. Summary of the Invention

[0006] In view of the defects of the prior art, the purpose of the present invention is to provide a fully prefabricated shear wall structure system with high construction quality and efficiency and reliable connection, with staggered edge member steel bars and a construction method thereof.

[0007] In order to achieve the above-mentioned object, the present invention provides a fully prefabricated shear wall structure system with staggered edge member steel bars, including a prefabricated shear wall, wherein the prefabricated shear wall includes a central wall panel and edge members arranged on both sides of the central wall panel, the bottom end of the central vertical steel bar in the central wall panel is disconnected at the horizontal joint, and the top of the prefabricated shear wall is matched with a connecting beam.

[0008] The upper region of the edge member and the middle wall panel form an integrated prefabricated structure to constitute the prefabricated portion of the edge member. A cast-in-place cavity is reserved in the lower region of the edge member. Edge longitudinal reinforcement is distributed in the edge member. The top ends of the edge longitudinal reinforcement extend beyond the top surface of the floor slab, and the bottom ends extend beyond the bottom surface of the prefabricated portion. The edge longitudinal reinforcements are distributed in the cast-in-place cavity. The edge longitudinal reinforcements in the edge members of two adjacent layers are staggered and overlapped in the cast-in-place cavity. The bottom surface of the prefabricated portion is configured as an inclined surface inclined toward the top end of the prefabricated portion to form a cast-in-place cavity with a trapezoidal cross-section.

[0009] A connecting beam node groove for cooperating with the connecting beam is reserved on the top of the edge member, anchor steel bars are embedded in the connecting beam node groove, and the connecting beam is erected in the connecting beam node groove.

[0010] Furthermore, the outer side surface of the cast-in-place cavity is higher than the inner side surface.

[0011] Furthermore, a lap steel cage extends from the end of the coupling beam, and the lap steel cage is tied and connected to the anchor steel bars.

[0012] Furthermore, a connecting beam steel bar is pre-embedded in the end area where the connecting beam cooperates with the connecting beam node groove. One end of the connecting beam steel bar is distributed along the length direction of the connecting beam, and the other end is bent to form a butt-jointed steel bar that cooperates with the anchor steel bar. A butt-jointed sleeve is provided at the end of the butt-jointed steel bar.

[0013] Furthermore, limiting grooves are distributed in the connecting beam node grooves, and the end areas where the connecting beams cooperate with the connecting beam node grooves are provided with docking protrusions adapted to the limiting grooves.

[0014] Furthermore, the edge member is a straight-line edge member, and the prefabricated portion is distributed along the entire height of the upper region of the straight-line edge member.

[0015] Furthermore, the edge member is an L-shaped edge member or a T-shaped edge member, and the L-shaped edge member or the T-shaped edge member includes a horizontal section and a corner section, and a connecting beam node groove is reserved at the top of the prefabricated part corresponding to the corner section.

[0016] Furthermore, it also includes a prefabricated interior wall horizontally connected to the edge member, an adjustable rotating buckle is provided on the outer side surface of the prefabricated interior wall, a reserved groove is provided on the outer side surface of the edge member that cooperates with the prefabricated interior wall, and a connecting steel lasso extends from the reserved groove to cooperate with the adjustable rotating buckle.

[0017] In order to achieve the above-mentioned object, the present invention provides a construction method for a fully prefabricated shear wall structure system with staggered edge member steel bars. Based on the staggered edge member steel bars system, the construction method comprises:

[0018] Prefabrication of prefabricated shear walls is carried out by prefabricating the edge components and the middle wall panels in an integrated manner. A prefabricated part is formed in the upper area of ​​the edge components, and a cast-in-place cavity with a trapezoidal cross-section is formed in the lower area. A connecting beam node groove is reserved at the top of the edge components, and edge longitudinal reinforcement is embedded in the edge components. The bottom end of the edge longitudinal reinforcement extends out of the bottom surface of the prefabricated part and is distributed in the cast-in-place cavity. The edge longitudinal reinforcements in the two adjacent layers of edge components are staggered.

[0019] Lay the mortar in the area corresponding to the lower floor slab and the middle wall panel, hoist the upper precast shear wall, place the upper middle wall panel in correspondence with the mortar, stagger and overlap the edge longitudinal reinforcement in the upper edge member and the edge longitudinal reinforcement in the lower edge member, set closed stirrups in the cast-in-place cavity, and pour concrete slurry;

[0020] Hoist the coupling beam, set it in the coupling beam node groove, tie it to the anchor steel bars, and pour concrete slurry in the coupling beam node groove.

[0021] The present invention provides a fully prefabricated shear wall structure system with staggered edge member steel bar connections and a construction method thereof. The upper area of ​​the edge member and the middle wall panel form an integrated prefabricated structure, which constitutes the prefabricated part of the edge member, and a cast-in-place cavity with a trapezoidal cross-section is reserved in the lower area of ​​the edge member, which can effectively improve the density of concrete in the cast-in-place cavity, so as to improve the connection strength of the two adjacent layers of prefabricated shear walls. At the same time, a connecting beam node groove is reserved at the top of the edge member, and the connecting beam can be erected in the connecting beam node groove to improve the positioning accuracy of the connecting beam and improve construction efficiency. The connection strength is improved by anchoring the steel bars, thereby improving construction efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 and Figure 2 A schematic structural diagram of a fully prefabricated shear wall structure system with staggered edge member steel bars connected according to the present invention;

[0024] Figure 3Schematic diagram of the coordination of the edge members and the reinforcement of the middle wall panel in the present invention;

[0025] Figure 4 Schematic diagram of the distribution of vertical steel bars in the middle of the present invention;

[0026] Figure 5 Schematic diagram of the coordination of edge components of two adjacent layers;

[0027] Figure 6 It is a structural schematic diagram of the straight edge component in the present invention;

[0028] Figure 7 and Figure 8 Schematic diagram of the structure of the L-shaped edge member of the present invention;

[0029] Figure 9 and Figure 10 Schematic diagram of the structure of the T-shaped edge member in the present invention;

[0030] Figures 11 to 15 This is a schematic diagram of the matching of the connecting beam and the reserved groove of the connecting beam in the present invention;

[0031] Figure 16 Schematic diagram of the cooperation between the edge member and the side wall in the present invention;

[0032] Figures 17 to 19 Schematic diagram of the connection between the edge member and the prefabricated interior wall in the present invention;

[0033] Figure 20 Schematic diagram of the connection between the edge member and the prefabricated exterior wall in the present invention.

[0034] Reference numerals:

[0035] 1. Middle wall panel; 11. Middle vertical reinforcement; 12. Middle horizontal reinforcement;

[0036] 2. Edge members; 201. First-layer edge members; 202. Second-layer edge members; 203. L-shaped edge members; 2031. Horizontal sections; 2032. Corner sections; 204. T-shaped edge members; 21. Precast sections; 211. Bottom surfaces; 212. Coupling beam connection grooves; 2121. Limiting grooves; 22. Cast-in-place cavity; 221. Inner surface; 222. Outer surface; 23. Edge longitudinal reinforcement; 231. First-layer edge longitudinal reinforcement; 2311. Third edge longitudinal reinforcement; 232. Second-layer edge longitudinal reinforcement; 2321. First edge longitudinal reinforcement; 2322. Second edge longitudinal reinforcement; 24. Closed stirrups; 25. Reserved grooves; 26. Connecting steel noose; 27. Internally threaded sleeves; 28. Anchor bars;

[0037] 3. Prefabricated interior wall; 31. Adjustable rotating buckle; 32. Bolt;

[0038] 4. prefabricated outer wall; 41. C-shaped channel steel buckle; 42. welded anchor; 43. water stop rubber strip; 44. connecting round hole; 45. screw rod with nut;

[0039] 5. coupling beam; 51. lapping steel cage; 52. coupling beam steel bar; 521. butt joint steel bar; 53. butt joint sleeve; 54. butt joint protrusion. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific drawings.

[0041] Embodiment one

[0042] Reference Figure 1 , which shows an example of the edge component steel bar staggered connection full prefabricated shear wall structure system provided by the present application.

[0043] As can be seen from the drawings, the edge component steel bar staggered connection full prefabricated shear wall structure system of the present example includes a prefabricated shear wall, which includes a middle wall panel 1 and edge components 2 arranged on both sides of the middle wall panel 1.

[0044] The bottom end of the middle vertical steel bar 11 in the middle wall panel 1 is disconnected at the horizontal joint, the upper region of the edge component 2 is integrally prefabricated with the middle wall panel 1 to form a prefabricated part 21 of the edge component 2, the lower region of the edge component 2 forms a cast-in-place cavity 22, the edge longitudinal steel bars 23 are distributed in the edge component 2, the top end of the edge longitudinal steel bars 23 extends out of the top surface of the floor slab, the bottom end extends out of the bottom surface of the prefabricated part 21 and is distributed in the cast-in-place cavity 22, and the edge longitudinal steel bars 23 in the edge components 2 of adjacent two layers are staggered, thereby reducing the lapping difficulty of the edge longitudinal steel bars 23, the bottom surface 211 of the prefabricated part 21 is configured as an inclined surface inclined towards the top end of the prefabricated part 21 to form a cast-in-place cavity 22 with a trapezoidal cross section, and the concrete pouring operation is performed in the cast-in-place cavity 22, which can effectively improve the concrete density and construction quality.

[0045] Further, the top of the edge component 2 is reserved with a coupling beam joint groove 212 for cooperation with the coupling beam 5, and the anchor steel bars 28 are pre-buried in the coupling beam joint groove 212 to enable the coupling beam 5 to be erected in the coupling beam joint groove 212, thereby improving the erection accuracy and construction efficiency.

[0046] In combination with Figure 1 and Figure 2 , wherein the edge components 2 are arranged on both sides of the middle wall panel 1, and the upper regions are integrally prefabricated with the middle wall panel 1 to form an integrated structure with the middle wall panel 1 to constitute the prefabricated part 21 of the edge component 2, and simultaneously form the cast-in-place cavity 22 in the lower region of the edge component 2 which is not prefabricated.

[0047] In this way, during construction, the edge components 2 and the middle wall panels 1 can be hoisted synchronously to ensure the connection accuracy. At the same time, the pouring of on-site concrete is only carried out in the cast-in-place cavity 22, which can effectively reduce the amount of wet work on site, improve construction efficiency and ensure the seismic performance of the structural system.

[0048] Combine Figure 3 Furthermore, a central vertical steel bar 11 and a central transverse steel bar 12 are preset in the central wall panel 1, and the central vertical steel bar 11 and the central transverse steel bar 12 are arranged in a grid-like distribution to enhance the structural strength of the central wall panel 1.

[0049] Combine Figure 3 and Figure 4 , wherein the top end of the middle vertical steel bar 11 is bent and anchored into the connection node between the middle wall panel 1 and the upper floor slab, and the bottom end is disconnected at the horizontal joint between the middle wall panel 1 and the lower floor slab to form an SGBL structural system, so that when the middle wall panel 1 is connected to the lower floor slab, the middle vertical steel bar 11 does not need to be vertically connected.

[0050] Combine Figure 1 and Figure 2 Furthermore, edge longitudinal reinforcement 23 is preset inside the edge member 2, and the top end of the edge longitudinal reinforcement 23 extends out of the top surface of the floor slab, so as to facilitate the overlap with the edge longitudinal reinforcement 23 of the upper edge member 2, and the bottom end of the edge longitudinal reinforcement 23 extends out of the prefabricated part 21 and is distributed in the cast-in-place area 22, so as to facilitate the overlap with the edge longitudinal reinforcement 23 of the lower edge member 2.

[0051] Further, combined with Figure 3 Several edge stirrups are distributed along the height direction of the edge member 2 to fix the edge longitudinal reinforcement 23, and the edge stirrups are only distributed in the prefabricated part 21, and reinforcement overlap space is reserved in the cast-in-place cavity 22.

[0052] Combine Figure 3 In addition, the two ends of the middle transverse steel bars 12 of the prefabricated part 21 corresponding to the edge member 2 in the middle wall panel 1 extend into the prefabricated part 21 respectively, and cooperate with the edge longitudinal bars 23 inside the prefabricated part 21 to form a grid distribution, which can not only improve the prefabrication stability of the middle wall panel 1 and the edge member 2, but also improve the structural strength of the prefabricated part 21.

[0053] Correspondingly, the two ends of the middle transverse steel bar 12 corresponding to the cast-in-place cavity 22 in the middle wall panel 1 extend to the end of the middle wall panel 1 respectively, and do not cooperate with the edge longitudinal reinforcement 23 inside the cast-in-place cavity 22, thereby providing a matching distribution space for the overlap of the edge longitudinal reinforcement 23 of the upper edge component 2 and the edge longitudinal reinforcement 23 of the lower edge component 2 in the cast-in-place cavity 22.

[0054] In order to reduce the difficulty of overlapping the edge longitudinal reinforcement 23, the edge longitudinal reinforcement 23 of the two adjacent layers of edge components 2 are staggered, so that when the two adjacent layers of edge components 2 are butt-jointed, the edge longitudinal reinforcement 23 of the lower layer edge component 2 can be directly inserted into the cast-in-place cavity 22 of the upper layer edge component 2, and staggered with the edge longitudinal reinforcement 23 of the upper layer edge component 2.

[0055] Combine Figure 5 As an example, the edge longitudinal reinforcements 23 are evenly distributed around the inner periphery of the edge member 2, and the distribution position of the second layer edge longitudinal reinforcement 232 in the second layer edge member 202 of the upper layer is offset from the distribution position of the first layer edge longitudinal reinforcement 231 in the first layer edge member 201 of the lower layer, and the distribution position and distribution spacing of the first layer edge longitudinal reinforcement 231 and the second layer edge longitudinal reinforcement 232 are adapted to each other. For example, the distribution spacing formed between the first edge longitudinal reinforcement 2321 and the second edge longitudinal reinforcement 2322 in the second layer edge longitudinal reinforcement 232 corresponds to the distribution position of the third edge longitudinal reinforcement 2311 in the first layer edge longitudinal reinforcement 231.

[0056] In this way, when two adjacent layers of edge components 2 are butted together, the third edge longitudinal reinforcement 2311 in the first layer of edge longitudinal reinforcement 231 can be inserted into the distribution spacing of the first edge longitudinal reinforcement 2321 and the second edge vertical reinforcement 2322, and distributed in parallel with the first edge longitudinal reinforcement 2321 and the second edge longitudinal reinforcement 2322. Correspondingly, all the first layer edge longitudinal reinforcements 231 in the first layer of edge components 201 can be respectively inserted into the distribution spacing of the second layer edge longitudinal reinforcement 232 in the second layer of edge components 202, so as to achieve staggered distribution and facilitate steel bar overlap.

[0057] Preferably, when the steel bars are overlapped in the cast-in-place cavity 22, the offset spacing between two adjacent edge longitudinal bars 23 is not less than 2d. For example, the spacing between the third edge longitudinal bar 2311 in the first layer of edge longitudinal bars 231 and the first edge longitudinal bar 2321 in the adjacent second layer of edge member 202 is not less than 2d, and the overlap length, that is, the length of the top end of the edge longitudinal bar 23 extending out of the floor slab is not less than 11d, where d is the diameter of the edge longitudinal bar 23, to ensure stable overlap of the two adjacent edge longitudinal bars 23.

[0058] Furthermore, the top ends of the first layer edge longitudinal reinforcement 231 and the second layer edge longitudinal reinforcement 232 are bent at a slope of not less than 1:6 to ensure that the spacing between the first layer edge longitudinal reinforcement 231 and the second layer edge longitudinal reinforcement 232 is not less than 2d, and to ensure effective grip and force transmission between the later cast-in-place concrete and the first layer edge longitudinal reinforcement 231 and the second layer edge longitudinal reinforcement 232, so that the first layer edge longitudinal reinforcement 231 and the second layer edge longitudinal reinforcement 232 are staggered and connected one by one, ensuring one-to-one force transmission, so as to improve the overall bearing performance of the precast shear wall.

[0059] Combine Figure 3 and Figure 5 At this time, closed stirrups 24 are set in the cast-in-place cavity 22, and the closed stirrups 24 are distributed around the first layer edge longitudinal reinforcement 231 and the second layer edge longitudinal reinforcement 232 respectively, connecting and fixing the first layer edge longitudinal reinforcement 231 and the second layer edge longitudinal reinforcement 232 to achieve the steel bar overlap of the two adjacent layers of edge components 2.

[0060] Casting concrete in the cast-in-place cavity 22 can form a reinforced concrete connection structure with the first layer of edge longitudinal reinforcement 231 and the second layer of edge longitudinal reinforcement 232. At the same time, the cast-in-place concrete in the cast-in-place cavity 22 is connected with the prefabricated part 21 to form an integral edge member 2.

[0061] Preferably, ultra-high strength concrete (UHPC) or extremely ductile concrete (ECC) is poured into the cast-in-place cavity 22 to improve the connection strength between the first layer edge longitudinal reinforcement 231 and the second layer edge longitudinal reinforcement 232 and the prefabricated part 21 .

[0062] Combine Figure 1 and Figure 2 In order to improve the connection strength between the cast-in-place concrete in the cast-in-place cavity 22 and the old concrete in the prefabricated part 21, the bottom surface 211 of the prefabricated part 21 is configured as an inclined surface inclined toward the top of the prefabricated part 2 to form a cast-in-place cavity 22 with a trapezoidal cross-section, and the inner side surface 221 of the cast-in-place cavity 22 that cooperates with the middle wall panel 1 is low and the outer side surface 222 is high.

[0063] As an example, in this embodiment, the inner side surface 221 of the cast-in-place cavity 22 is 200 mm high, and the outer side surface 222 is 300 mm high.

[0064] In this way, concrete is poured into the cast-in-place cavity 22 at a higher position on the outer side surface 222 of the cast-in-place cavity 22, and the concrete is leveled near the inner side surface 221 of the middle wall panel 1 under the action of gravity, which is conducive to ensuring the dense pouring of concrete and improving the pouring quality of the joint surface between the cast-in-place concrete in the cast-in-place cavity 22 and the old concrete of the prefabricated part 2, so as to form a structurally stable edge member 2.

[0065] Furthermore, for the middle wall panels 1 of two adjacent layers, mortar is laid on the area corresponding to the middle wall panels 1 on the lower floor slab, and the middle wall panels 1 are placed on the mortar. The mortar is squeezed out to achieve the connection of the middle wall panels 1, and the middle vertical steel bars of the two adjacent layers of the middle wall panels 1 do not need to be connected, so as to improve construction efficiency.

[0066] Compared with the prior art, when two adjacent layers of shear walls are connected, a horizontal through-slit is formed at the bottom of the shear wall, resulting in reduced ductility of the wall and poor seismic performance. The middle wall panel 1 of this structural system cooperates with the edge member 2 to configure the bottom of the prefabricated shear wall into a convex shape. The joints at the bottom of the prefabricated shear wall are only distributed on both sides of the middle wall panel 1, and are composed of the inclined bottom surface 211 of the prefabricated part 21, the inner side surface 221 and the outer side surface 222 of the cast-in-place cavity 22, forming a trapezoidal distribution that is compatible with the cast-in-place cavity 22, and relatively trapezoidal distribution joints are formed on both sides of the middle wall panel 1 to reduce the risk of reduced ductility and seismic performance caused by horizontal through-slits, and effectively ensure the connection strength.

[0067] Furthermore, the high-strength concrete in the cast-in-place cavity 22 area is stronger than the precast portion 21, forming a nearly rigid domain that effectively constrains the wall bottom of the edge member 2, thereby raising the plastic hinge position of the precast shear wall formed by the middle wall panel 1 and the edge member 2, thereby causing the damage area of ​​the precast shear wall to move upward along the wall height. When the precast shear wall is damaged, it is usually manifested as the concrete in the upper rigid domain on the compression side of the precast shear wall being crushed and the steel bars yielding under pressure. After the damage area moves upward along the wall height, it can effectively improve the bearing capacity and make the ductility, energy consumption and other indicators of the precast shear wall equivalent to the strength of the high-strength concrete in the cast-in-place cavity 22 area, thereby improving the overall wall's stress strength and seismic performance.

[0068] The edge member 2 thus formed forms an integrated prefabricated structure with the middle wall panel 1 to constitute the prefabricated portion 21 of the edge member 2. The lower area of ​​the edge member 2 forms a cast-in-place cavity 22, and the edge longitudinal reinforcement 23 of the two adjacent layers are staggered. This can effectively reduce the difficulty of steel bar splicing, reduce the amount of on-site pouring work, improve the connection construction efficiency of the two adjacent layers of prefabricated shear walls, and shorten the construction period.

[0069] Combine Figure 1 and Figure 2 Furthermore, in order to enable the prefabricated shear wall to be quickly connected to the coupling beam 5 and ensure the connection strength, a coupling beam node groove 212 is reserved at the top of the edge member 2 (the top of the prefabricated part 21) for cooperating with the coupling beam 5. Anchor steel bars 28 are embedded in the coupling beam node groove 212 so that the coupling beam 5 can be quickly erected in the coupling beam node groove 212, thereby improving the coupling beam positioning accuracy and construction efficiency.

[0070] Combine Figure 6 Specifically, if the prefabricated shear wall is used as a load-bearing and partition wall, the edge member 2 is configured as a straight-line edge member, and the prefabricated part 21 is distributed along the upper area of ​​the straight-line edge member. There is no need to reserve a connecting beam node groove 212. After pouring concrete in the cast-in-place cavity 22, the edge member 2 and the middle wall panel 1 are formed into a straight-line prefabricated shear wall, which can bear load and perform partitioning.

[0071] Combine Figure 1、 Figure 2 、 Figure 7 and Figure 8 Furthermore, the prefabricated shear wall serves as a single-sided corner wall, and the edge member 2 on the corner side of the middle wall panel 1 is configured as an L-shaped edge member 203, and the edge member 2 on the other side of the middle wall panel 1 is configured as a straight-line edge member. The L-shaped edge member 203 is composed of a horizontal section 2031 and a corner section 2032 distributed on one side of the horizontal section 2031.

[0072] For the L-shaped edge member 203, the horizontal section 2031 of the prefabricated part 21 that cooperates with the middle wall panel 1 has the same structure as the I-shaped edge member, and a connecting beam node groove 212 is reserved at the top of the corner section 3032 on the corner side of the prefabricated part 21.

[0073] In this way, after the cast-in-place cavities in the I-shaped edge members and L-shaped edge members 203 on both sides of the middle wall panel 1 are poured with concrete respectively, they are formed into L-shaped prefabricated shear walls with the middle wall panel 1, which can be used as single-sided corner walls, and the reserved connecting beam node grooves 212 can be overlapped with the connecting beam 5 after the corner, thereby improving the connection strength between the L-shaped prefabricated shear wall and the connecting beam 5, and allowing the connecting beam 5 to be accurately positioned, thereby improving construction efficiency.

[0074] Accordingly, the L-shaped edge member 203 forms a cast-in-place cavity 22 with a trapezoidal cross section in the horizontal section 2031 and the corner section 3032 , respectively, to ensure that the connection strength of two adjacent layers of L-shaped edge members 203 is improved through the cast-in-place cavity 22 with a trapezoidal cross section.

[0075] Combine Figure 9 and Figure 10 Furthermore, the prefabricated shear wall serves as a double-sided corner wall, and the edge member 2 on the corresponding corner side of the middle wall panel 1 is configured as a T-shaped edge member 204, and the edge member 2 on the other side of the middle wall panel 1 is configured as a straight-line edge member. The T-shaped edge member 204 is composed of a horizontal segment 2031 and corner segments 2032 distributed on both sides of the horizontal segment 2031.

[0076] For the T-shaped edge member 204, the horizontal section of the prefabricated part 21 that cooperates with the middle wall panel 1 has the same structure as the I-shaped edge member, and connecting beam node grooves 212 are reserved at the top of the corner sections corresponding to the double-sided corners on both sides of the prefabricated part 21.

[0077] In this way, after the cast-in-place cavities in the I-shaped edge members and T-shaped edge members 204 on both sides of the middle wall panel 1 are respectively poured with concrete, they are formed into a T-shaped prefabricated shear wall with the middle wall panel 1, which can be used as a double-sided corner wall, and the reserved connecting beam node groove 212 can be overlapped and matched with the connecting beams 5 after the corners on both sides, thereby improving the connection strength between the T-shaped prefabricated shear wall and the connecting beam.

[0078] Accordingly, the T-shaped edge member 204 forms a cast-in-place cavity 22 with a trapezoidal cross section in the horizontal section 2031 and the corner section 3032 , respectively, to ensure that the connection strength of the two adjacent layers of L-shaped edge members 203 is improved through the cast-in-place cavity 22 with a trapezoidal cross section.

[0079] The edge member 2 thus constructed can realize the corner rotation of the prefabricated shear wall and is stably connected to the horizontal coupling beam 5 .

[0080] In order to improve the connection strength, anchoring steel bars 28 are pre-embedded in the connecting beam node groove 212 . The anchoring steel bars 28 extend and are distributed in the connecting beam node groove 212 for connection with the connecting beam 5 .

[0081] Combine Figure 11 In some embodiments, a lap steel cage 51 is extended from the end of the coupling beam 5 so that when the coupling beam 5 is docked with the coupling beam node groove 212, the lap steel cage 51 is laid in the coupling beam node groove 212 and tied with the anchor steel bar 28, such as Figure 12 as shown to increase connection strength.

[0082] Combine Figure 13 In some embodiments, a connecting beam steel bar 52 is pre-embedded inside the end area of ​​the connecting beam 5 that cooperates with the connecting beam node groove 212. One end of the connecting beam steel bar 52 is distributed along the length direction of the connecting beam 5, and is bent at the other end that cooperates with the anchor steel bar 28 to form a docking steel bar 521 that cooperates with the anchor steel bar 28. A docking sleeve 53 is provided at the end of the docking steel bar 521, and a connecting hole corresponding to the docking sleeve 53 is provided at the bottom of the connecting beam 5.

[0083] Combine Figure 14 In conjunction with this, the distribution height of the anchor steel bar 28 is adapted to the docking sleeve 53. In this way, when the coupling beam 5 is erected in the coupling beam node groove 212, the anchor steel bar 28 in the coupling beam node groove 212 is distributed correspondingly to the docking sleeve 53 and is threadedly connected to the docking sleeve 53 through the connecting hole. The anchor steel bar 28 is built into the docking sleeve 53 and docked with the docking steel bar 521. Figure 15 As shown, the connection strength between the coupling beam 5 and the coupling beam node groove 212 is improved. At the same time, the connection between the coupling beam 5 and the coupling beam node groove 212 can be quickly achieved by hoisting and positioning the coupling beam 5, thereby improving construction efficiency.

[0084] Combine Figure 13 and Figure 14Furthermore, a limiting groove 2121 is distributed in the beam node groove 212, and the limiting groove 2121 is recessed in the beam node groove 212. The end area where the connecting beam 5 cooperates with the connecting beam node groove 212 is provided with a docking protrusion 54 adapted to the limiting groove 2121, so that when the connecting beam 5 is erected in the connecting beam node groove 212, the docking protrusion 54 can be embedded in the limiting groove 2121 and move along the limiting groove 2121, thereby realizing a tight connection and cooperation between the connecting beam 5 and the connecting beam node groove 212. The limiting groove 2121 can guide and limit the moving direction of the docking protrusion 54, thereby improving the positioning accuracy and construction efficiency of the connecting beam 5.

[0085] Combine Figure 15 At the same time, the limiting groove 2121 forms a snap fit with the docking protrusion 54, which can effectively improve the connection strength between the connecting beam 5 and the connecting beam node groove 212. Pouring high-strength concrete in the beam node groove 212 can increase the contact area between the concrete and the connecting beam 5 and the connecting beam node groove 212, thereby improving the connection strength.

[0086] Example 2

[0087] Combine Figure 16 On the basis of Example 1, in order to ensure that the edge member 2 can be stably connected to the prefabricated walls on both sides of the prefabricated shear wall and to improve the connection strength of the vertical joints of the edge member 2, the outer side of the edge member 2 is further provided with a docking structure for cooperating with the prefabricated wall.

[0088] Furthermore, the prefabricated shear wall and the prefabricated wall body are distributed horizontally, and the side ends of the prefabricated wall body are provided with embedded parts for cooperating with the prefabricated shear wall. The side ends of the prefabricated shear wall and the prefabricated wall body form a docking structure. The embedded parts can be fixedly docked with the docking structure through construction components. Concrete is filled between the prefabricated shear wall and the prefabricated wall body to form a concrete connection structure.

[0089] Combine Figure 17 、 Figure 18 and Figure 19 Specifically, the prefabricated wall is a prefabricated interior wall 3, and the two sides of the prefabricated shear wall are respectively connected to the prefabricated interior wall 3. The outer surface of the prefabricated interior wall 3 is provided with adjustable rotating buckles 31 at a certain module interval in the height direction. In conjunction with this, the outer surface of the edge member 2 is provided with reserved grooves 25 corresponding to the adjustable rotating buckles 31 at a certain module interval in the height direction, and a connecting steel noose 26 for cooperating with the adjustable rotating buckles 31 extends from the reserved grooves 25. At the same time, the wall surface of the edge member 2 is provided with bolts 32 protruding from the wall surface.

[0090] In this way, when the two sides of the prefabricated shear wall are respectively connected to the prefabricated inner wall 3, the reserved groove 25 corresponds to the adjustable rotating buckle 31. One end of the smart wrench cooperates with the bolt 32, and the other end cooperates with the adjustable rotating buckle 31. With the bolt 32 as the fixed point, the adjustable rotating buckle 31 is rotated so that the adjustable rotating buckle 31 rotates facing the reserved groove 25. The adjustable rotating buckle 31 is tied to the connecting steel lasso 26 to strengthen the pretightening force between the adjustable rotating buckle 31 and the connecting steel lasso 2. At the same time, fine stone concrete is filled in the reserved groove 25 to ensure a stable connection between the edge member 2 and the prefabricated inner wall 3.

[0091] Combine Figure 20 Furthermore, the prefabricated wall is a prefabricated exterior wall 4, and the prefabricated shear wall 2 is connected to the prefabricated exterior wall 4. The outer side of the prefabricated exterior wall 4 is provided with a C-shaped channel steel clip 41 along the full height of the wall. The C-shaped channel steel clip 41 is fixed by a welding anchor 42 extending to the inside of the prefabricated exterior wall 4. A water stop strip 43 is provided inside the C-shaped channel steel clip 41. The C-shaped channel steel clip 41 is also provided with a connecting circular hole 44 at a certain module along the height direction of the prefabricated exterior wall 4.

[0092] In coordination with this, the edge member 2 is adapted to the C-shaped channel steel buckle 41, so that the edge member 2 can be embedded in the C-shaped channel steel buckle 41. An internal threaded sleeve 27 for cooperating with the connecting circular hole 44 is also pre-embedded on the outer surface of the edge member 2, and a water-stop ring is provided inside the internal threaded sleeve 27.

[0093] In this way, when the two sides of the prefabricated shear wall are respectively connected to the prefabricated exterior wall 4, the edge member 2 is embedded in the C-shaped channel steel clip 41, and the internal threaded sleeve 27 extends to the prefabricated exterior wall 4 through the connecting circular hole 44. The screw 45 with a nut is screwed into the connecting circular hole 44, which can stably connect the edge member 2 to the prefabricated exterior wall 4.

[0094] Preferably, after the nut screw 45 is screwed in, the surface of the nut screw 45 is lower than the top surface of the prefabricated exterior wall 4 or is flush with the top surface of the prefabricated exterior wall 4, and waterproof mortar is applied to the joints between the nut screw 45 and the prefabricated exterior wall 4 and the edge member 2, thereby ensuring the connection strength and waterproof performance of the prefabricated shear wall and the prefabricated exterior wall 4.

[0095] At the same time, the welded anchor 42 of the C-shaped channel steel clip 41 extends to the interior of the prefabricated exterior wall 4, which can extend the water seepage path and cooperate with the water-stop rubber strip 43 and the water-stop ring in the internal threaded sleeve 27 to provide two waterproof connections between the edge component 2 and the prefabricated exterior wall 4, ensuring the waterproof performance of the vertical joint between the edge component 2 and the prefabricated exterior wall 4.

[0096] Thus, the present invention provides a fully prefabricated shear wall structure system with staggered edge member steel bar connections. The edge longitudinal bars 23 of the two adjacent layers of prefabricated shear walls are staggered, and concrete is poured through the cast-in-situ cavity 22 with a trapezoidal cross-section to achieve connection between the two layers of prefabricated shear walls, which can effectively improve the connection strength of the horizontal joints. At the same time, the connecting beam node groove 212 at the top of the edge member 2 is quickly connected to the connecting beam 5 to achieve effective connection between the prefabricated shear wall and the connecting beam. Furthermore, the docking structure of the edge member 2 is quickly connected to the embedded parts at the side end of the prefabricated wall to achieve effective connection between the walls on the same layer. All components are fully prefabricated, which minimizes on-site wet operations, forms a fully prefabricated construction of the shear wall structure, and improves construction efficiency and quality.

[0097] The present invention also provides a construction method for a fully prefabricated shear wall structure system with staggered edge member steel bars. Based on the fully prefabricated shear wall structure system with staggered edge member steel bars formed by the above-mentioned scheme, the construction method includes:

[0098] First, the prefabricated shear wall is prefabricated, and the edge member 2 and the middle wall panel 1 are prefabricated as an integrated whole. A prefabricated part 21 is formed in the upper area of ​​the edge member 2, and a cast-in-place cavity 22 is formed in the lower area. A connecting beam node groove 212 is reserved at the top of the edge member 2. Edge longitudinal reinforcement 23 is embedded in the edge member 2. The bottom end of the edge longitudinal reinforcement 23 extends out of the bottom surface 211 of the prefabricated part 21 and is distributed in the cast-in-place cavity 22. The edge longitudinal reinforcement 23 in the two adjacent layers of edge members 2 are staggered.

[0099] In this example, the second layer of edge longitudinal ribs 232 of the second layer edge member 202 of the upper layer and the first layer of edge longitudinal ribs 231 of the first layer edge member 201 of the lower layer are staggered.

[0100] Next, clean the lower floor slab and lay slurry in the area corresponding to the lower floor slab and the middle wall panel 1. Preferably, the laying thickness of the slurry is 20 mm.

[0101] Next, hoist the upper prefabricated shear wall, hoist the second-layer edge member 202 and the second-layer middle wall panel simultaneously, and place the second-layer middle wall panel and the mortar material correspondingly, so that the second-layer middle wall panel will squeeze out the mortar material, ensuring a stable connection between the second-layer middle wall panel and the lower floor slab.

[0102] At this time, the first layer edge longitudinal reinforcement 231 in the first layer edge member 201 is inserted into the cast-in-place cavity 22 of the second layer edge member 202, and the second layer edge longitudinal reinforcement 232 of the second layer edge member 202 is overlapped with the first layer edge longitudinal reinforcement 231 in the first layer edge member 201 in a staggered distribution one by one.

[0103] At that time, closed stirrups 24 are provided in the cast-in-place cavity 22 , and the closed stirrups 24 overlap and fix the first layer of edge longitudinal reinforcement 231 and the second layer of edge longitudinal reinforcement 232 .

[0104] Concrete is poured into the cast-in-place cavity 22 to form a reinforced concrete connection structure with the first layer edge longitudinal reinforcement 231 and the second layer edge longitudinal reinforcement 232. At the same time, the cast-in-place concrete in the cast-in-place cavity 22 is connected to the prefabricated part 21 to form an integral second layer edge member 202, so that the two adjacent layers of edge members are stably connected.

[0105] Next, the prefabricated shear wall and the coupling beam 5 are connected.

[0106] The connecting beam 5 is hoisted and set up in the connecting beam node groove 212. The docking protrusion 54 of the connecting beam 5 is embedded in the limiting groove 2121 of the connecting beam node groove 212 and moves along the limiting groove 2121. The limiting groove 2121 can guide and limit the moving direction of the docking protrusion 54 to quickly position the connecting beam 5 and ensure the positioning accuracy.

[0107] At the same time, the anchor steel bars 28 in the connecting beam node groove 212 are distributed correspondingly to the docking sleeve 53 and are threadedly connected to the docking sleeve 53. The anchor steel bars 28 are built into the docking sleeve 53 and docked with the docking steel bars 521, thereby improving the connection strength between the connecting beam 5 and the connecting beam node groove 212.

[0108] High-strength concrete is poured into the coupling beam node groove 212 to stably form the coupling beam 5 and the prefabricated wall into a reinforced concrete connection structure.

[0109] The construction method also includes a method for connecting the prefabricated shear wall with the prefabricated exterior wall 3 or the prefabricated interior wall 4 .

[0110] Specifically, the two sides of the prefabricated shear wall are respectively docked with the prefabricated interior wall 3, and the reserved groove 25 corresponds to the adjustable rotating buckle 31. One end of the smart wrench is matched with the bolt 32, and the other end is matched with the adjustable rotating buckle 31. With the bolt 32 as the fixed point, the adjustable rotating buckle 31 is rotated so that the adjustable rotating buckle 31 rotates facing the reserved groove 25, and the adjustable rotating buckle 31 is tied to the connecting steel lasso 26 to strengthen the preload force between the adjustable rotating buckle 31 and the connecting steel lasso 2. At the same time, fine stone concrete is filled in the reserved groove 25 to stably connect the edge member 2 and the prefabricated interior wall 3.

[0111] Correspondingly, the two sides of the prefabricated shear wall are respectively connected to the prefabricated exterior wall 4, the edge member 2 is embedded in the C-shaped channel steel clip 41, the internal threaded sleeve 27 extends to the prefabricated exterior wall 4 through the connecting circular hole 44, and the screw 45 with a nut is screwed into the connecting circular hole 44, which can stably connect the edge member 2 to the prefabricated exterior wall 4.

[0112] The present invention provides a fully prefabricated shear wall structure system with staggered edge member steel bar connections and a construction method thereof. The upper area of ​​the edge member 2 and the middle wall panel 1 form an integrated prefabricated structure, constituting a prefabricated part 21 of the edge member 2, and the lower area of ​​the edge member 2 forms a cast-in-place cavity 22 with a trapezoidal cross-section, which can effectively improve the density of concrete in the cast-in-place cavity, thereby improving the connection strength of the two adjacent layers of prefabricated shear walls. At the same time, a connecting beam node groove 212 is reserved at the top of the edge member 2, and the connecting beam 5 can be erected in the connecting beam node groove to improve the accuracy of the connecting beam placement and improve construction efficiency. The connection strength is improved by anchoring the steel bars, thereby improving construction efficiency and quality.

[0113] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully prefabricated shear wall structure system with staggered edge member reinforcement connections, comprising a prefabricated shear wall, the prefabricated shear wall comprising a central wall panel and edge members disposed on both sides of the central wall panel, the bottom ends of the central vertical reinforcements in the central wall panel being disconnected at horizontal joints, the top of the prefabricated shear wall being coupled to a coupling beam, characterized in that: The upper region of the edge member and the middle wall panel form an integrated prefabricated structure to constitute the prefabricated portion of the edge member. A cast-in-place cavity is reserved in the lower region of the edge member. Edge longitudinal reinforcement is distributed in the edge member. The top ends of the edge longitudinal reinforcement extend beyond the top surface of the floor slab, and the bottom ends extend beyond the bottom surface of the prefabricated portion. The edge longitudinal reinforcements are distributed in the cast-in-place cavity. The edge longitudinal reinforcements in the edge members of two adjacent layers are staggered and overlapped in the cast-in-place cavity. The bottom surface of the prefabricated portion is configured as an inclined surface inclined toward the top end of the prefabricated portion to form a cast-in-place cavity with a trapezoidal cross-section. A connecting beam node groove for cooperating with the connecting beam is reserved on the top of the edge member, anchor steel bars are embedded in the connecting beam node groove, and the connecting beam is erected in the connecting beam node groove.

2. The fully prefabricated shear wall structural system with staggered edge member steel bars according to claim 1 is characterized in that: The outer side surface of the cast-in-place cavity is higher than the inner side surface.

3. The fully prefabricated shear wall structural system with staggered edge member steel bars according to claim 1 is characterized in that: A lap steel cage extends from the end of the coupling beam, and the lap steel cage is connected to the anchor steel bars by binding.

4. The fully prefabricated shear wall structural system with staggered edge member steel bars according to claim 1 is characterized in that: A connecting beam steel bar is pre-embedded in the end area where the connecting beam cooperates with the connecting beam node groove. One end of the connecting beam steel bar is distributed along the length direction of the connecting beam, and the other end is bent to form a butt-jointed steel bar that cooperates with the anchor steel bar. A butt-jointed sleeve is provided at the end of the butt-jointed steel bar.

5. The fully prefabricated shear wall structural system with staggered edge member steel bars according to claim 4 is characterized in that: Limiting grooves are distributed in the connecting beam node grooves, and the end areas where the connecting beams cooperate with the connecting beam node grooves are provided with docking protrusions adapted to the limiting grooves.

6. The fully prefabricated shear wall structural system with staggered edge member steel bars according to claim 1 is characterized in that: The edge member is a straight-line edge member, and the prefabricated portion is distributed along the upper region of the straight-line edge member.

7. The fully prefabricated shear wall structural system with staggered edge member steel bars according to claim 1 is characterized in that: The edge member is an L-shaped edge member or a T-shaped edge member, and the L-shaped edge member or the T-shaped edge member includes a horizontal section and a corner section. The prefabricated part is provided with a connecting beam node groove at the top end corresponding to the corner section.

8. The fully prefabricated shear wall structural system with staggered edge member steel bars according to claim 1 is characterized in that: It also includes a prefabricated interior wall horizontally connected to the edge member, an adjustable rotating buckle is provided on the outer side of the prefabricated interior wall, a reserved groove is provided on the outer side of the edge member that cooperates with the prefabricated interior wall, and a connecting steel lasso extends from the reserved groove to cooperate with the adjustable rotating buckle.

9. A construction method for a fully prefabricated shear wall structure system with staggered edge member reinforcement connections, characterized in that: Based on the fully prefabricated shear wall structural system with staggered edge member steel bars connected according to any one of claims 1 to 8, the construction method comprises: Prefabrication of prefabricated shear walls is carried out by prefabricating the edge components and the middle wall panels in an integrated manner. A prefabricated part is formed in the upper area of ​​the edge components, and a cast-in-place cavity with a trapezoidal cross-section is formed in the lower area. A connecting beam node groove is reserved at the top of the edge components, and edge longitudinal reinforcement is embedded in the edge components. The bottom end of the edge longitudinal reinforcement extends out of the bottom surface of the prefabricated part and is distributed in the cast-in-place cavity. The edge longitudinal reinforcements in the two adjacent layers of edge components are staggered. Lay the mortar in the area corresponding to the lower floor slab and the middle wall panel, hoist the upper precast shear wall, place the upper middle wall panel in correspondence with the mortar, stagger and overlap the edge longitudinal reinforcement in the upper edge member and the edge longitudinal reinforcement in the lower edge member, set closed stirrups in the cast-in-place cavity, and pour concrete slurry; Hoist the coupling beam, set it in the coupling beam node groove, tie it to the anchor steel bars, and pour concrete slurry in the coupling beam node groove.

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