A connection structure and construction technology for a precast shear wall panel and a cast-in-place part

Abstract

The present invention discloses a connection structure and construction technology between a precast shear wall panel and a cast-in-place part, belonging to the technical field of precast shear wall panel construction. It includes two adjacent precast shear wall panels. On the adjacent side end faces of the two precast shear wall panels, paired connecting steel bars are extended. The ends of the connecting steel bars are connected through a connecting part with an M-shaped bend. Vertically erected cast-in-place part vertical steel bars are respectively penetrated and fixed at the bending positions of the connecting parts of the two precast shear wall panels, and the bending positions on both sides of the connecting parts of the two precast shear wall panels correspond up and down. The four cast-in-place part vertical steel bars are clamped and positioned through the connecting part with an M-shaped bend. Especially for the two vertical steel bars A at the bending positions on both sides of the connecting part, reliable connection and precise positioning of the left and right precast shear wall panels can be achieved. When pouring concrete, the connecting parts on both sides are clamped by the cast-in-place part vertical steel bars, avoiding the outward displacement of the precast shear wall panels, ensuring the pouring quality of the cast-in-place part and the construction quality.

Description

Technical Field

[0001] The invention belongs to the technical field of precast shear wall panel construction, and particularly relates to a connection structure and construction technology between a precast shear wall panel and a cast-in-place part. Background Art

[0002] Precast shear wall panels are generally made of reinforced concrete and precast in factories. They are suitable for high-rise shear wall structural systems and are widely used as the main vertical load-bearing components in high-rise residential buildings. Together with precast beams, slabs and other components through a post-cast composite layer, they form an integral precast shear wall structural system. The system has good structural performance and can fully meet the requirements in terms of structural load-bearing, earthquake prevention and disaster reduction, and service durability. The post-cast connection with cast-in-place edge members can play a good guiding and supporting role for the post-cast part, which is beneficial to improving the standardization level of the overall structure construction.

[0003] Generally, a cast-in-place part needs to be designed between adjacent precast shear wall panels to achieve reliable and stable connection of adjacent precast shear wall panels and ensure the quality of building construction.

[0004] A section of connecting steel bars usually extends from the side end face of the precast shear wall panel for connecting with the frame steel bars of the cast-in-place part to realize the pouring of the cast-in-place part. The connecting steel bars extended from the precast shear wall panel are usually straight or bent with hooks, and are only fixed by wire bundling with the frame steel bars of the cast-in-place part. It is impossible to ensure the reliability of the connection between two adjacent precast shear wall panels and the accuracy of positioning. When pouring the cast-in-place part, the precast shear wall panel is prone to outward displacement under the tension of the concrete, which will cause the wire bundling the connecting steel bars of the precast shear wall panel and the frame steel bars of the cast-in-place part to be broken, thus unable to ensure the pouring quality of the cast-in-place part and affecting the construction quality. Summary of the Invention

[0005] To solve the above problems, the invention provides a connection structure and construction technology between a precast shear wall panel and a cast-in-place part. By clamping the two side connection parts with the vertical steel bars of the cast-in-place part, the outward displacement of the precast shear wall panel is avoided, the pouring quality of the cast-in-place part is ensured, and the construction quality is ensured.

[0006] On the one hand, the invention is realized by the following technical solutions:

[0007] A connection structure between a precast shear wall panel and a cast-in-place part includes two adjacent precast shear wall panels. Paired connecting steel bars extend from the adjacent side end faces of the two precast shear wall panels, and the ends of the connecting steel bars are connected through a connecting part bent in an M shape; vertical cast-in-place part vertical steel bars are respectively penetrated and fixed at the bending positions of the connecting parts of the two precast shear wall panels, and the bending positions on both sides of the connecting parts of the two precast shear wall panels correspond up and down.

[0008] A further improvement of the present invention is that the vertical steel bars of the cast-in-place part and the connecting part are fixed by wire bundling.

[0009] A further improvement of the present invention is that the vertical steel bars of the cast-in-place part include two vertical steel bars B arranged at the bending position in the middle of the connecting part and two vertical steel bars A arranged at the bending positions on both sides of the connecting part.

[0010] A further improvement of the present invention is that the two vertical steel bars A and the two vertical steel bars B are connected and fixed by a vertical steel bar positioning frame.

[0011] A further improvement of the present invention is that the vertical steel bar positioning frame is in a quadrilateral bending structure and is sleeved and fixed on the outside of the four vertical steel bars of the cast-in-place part.

[0012] A further improvement of the present invention is that the vertical steel bar positioning frame is in a triangular structure and is sleeved and fixed on the outside of two vertical steel bars B and one vertical steel bar A.

[0013] A further improvement of the present invention is that the vertical steel bar positioning frame is in a triangular structure and is sleeved and fixed on the outside of two vertical steel bars A and one vertical steel bar B.

[0014] A further improvement of the present invention is that the connecting parts on the two precast shear wall panels are arranged staggered up and down at intervals.

[0015] A further improvement of the present invention is that the connecting part and the corresponding pair of connecting steel bars are integrally bent and formed.

[0016] Another aspect of the present invention is realized through the following technical solutions:

[0017] A construction process for precast shear wall panels and cast-in-place parts includes the following steps:

[0018] S1: Place two adjacent precast shear wall panels so that the bending positions on both sides of the connecting parts on both sides correspond up and down;

[0019] S2: Place a vertical steel bar positioning frame on the upper side of the connecting part;

[0020] S3: Insert four vertical steel bars of the cast-in-place part from top to bottom, so that two vertical steel bars B are placed at the bending positions in the middle of the connecting parts on both sides, and two vertical steel bars A are placed at the bending positions on both sides of the connecting part. And the connecting parts on both sides share two vertical steel bars A. Move the two precast shear wall panels away from each other and adjust until the two vertical steel bars A are clamped and limited to the two sides of the connecting part;

[0021] S4: Fix the vertical steel bars of the cast-in-place part and the connecting part by wire bundling;

[0022] S5: Adjust the up and down position of the vertical steel bar positioning frame, and fix the vertical steel bar positioning frame and the four vertical steel bars of the cast-in-place part by wire bundling;

[0023] S6: Support the cast-in-place part of the space and pour concrete.

[0024] As can be seen from the above technical solutions, the beneficial effects of the present invention are:

[0025] The overall structure is simple, the construction is convenient, and the practicability is good. The four vertical steel bars of the cast-in-place part are clamped and positioned by the M-shaped bent connecting part. Especially for the two vertical steel bars A at the bent positions on both sides of the connecting part, reliable connection and precise positioning of the left and right precast shear wall panels can be realized. When pouring concrete, the two side connecting parts are clamped by the vertical steel bars of the cast-in-place part, avoiding the outward displacement of the precast shear wall panels, ensuring the pouring quality of the cast-in-place part and the construction quality. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic structural diagram of the specific embodiment of the present invention.

[0028] Figure 2 It is a schematic structural diagram of the precast shear wall panel of the specific embodiment of the present invention.

[0029] Figure 3 For Figure 1 It is a partial enlarged structural diagram of part A in

[0030] Figure 4 It is a top view schematic diagram of the specific embodiment of the present invention.

[0031] Figure 5 It is a schematic diagram of the first vertical steel bar positioning frame and the vertical steel bars of the cast-in-place part of the specific embodiment of the present invention.

[0032] Figure 6 It is a schematic diagram of the second vertical steel bar positioning frame and the vertical steel bars of the cast-in-place part of the specific embodiment of the present invention.

[0033] Figure 7 It is a schematic diagram of the third vertical steel bar positioning frame and the vertical steel bars of the cast-in-place part of the specific embodiment of the present invention.

[0034] In the attached drawings: 1. Prefabricated shear wall panel; 2. Connecting steel bars, 21. Connecting part; 3. Vertical steel bars of the cast-in-place part, 31. Vertical steel bar A, 32. Vertical steel bar B; 41. First vertical steel bar positioning frame, 42. Second vertical steel bar positioning frame, 43. Third vertical steel bar positioning frame. Specific implementation mode

[0035] To make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the present invention will be clearly and completely described below in conjunction with the attached drawings in the specific embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0036] As Figure 1-4 shown, the present invention discloses a connection structure between a prefabricated shear wall panel and a cast-in-place part, including two adjacent prefabricated shear wall panels 1. On the adjacent side end faces of the two prefabricated shear wall panels 1, paired connecting steel bars 2 are extendedly provided. The ends of the connecting steel bars 2 are connected through a connecting part 21 with an M-shaped bend; vertical steel bars 3 of the cast-in-place part are respectively penetrated and fixed at the bending positions of the connecting parts 21 of the two prefabricated shear wall panels 1, and the bending positions on both sides of the connecting parts 21 of the two prefabricated shear wall panels 1 are corresponding up and down, that is, the bending positions on both sides of the two connecting parts 21 share two vertical steel bars 3 of the cast-in-place part.

[0037] The four vertical steel bars 3 of the cast-in-place part are clamped and positioned through the connecting part 21 with an M-shaped bend. Especially for the two vertical steel bars 3 (two vertical steel bars A31) at the bending positions on both sides of the connecting part 21, reliable connection and precise positioning of the left and right prefabricated shear wall panels 1 can be realized. When pouring concrete, the two connecting parts 21 on both sides are clamped by the vertical steel bars 3 of the cast-in-place part, avoiding the outward displacement of the prefabricated shear wall panel 1 and ensuring the pouring quality of the cast-in-place part and the construction quality. The overall structure is simple, the construction is convenient, and the practicability is good.

[0038] Among them, the vertical steel bars 3 of the cast-in-place part and the connecting part 21 are fixed by wire bundling. The connecting part 21 and the vertical steel bars 3 of the cast-in-place part are limited by wires. When pouring concrete, an integral framework is formed to ensure the construction quality.

[0039] Among them, the vertical steel bars 3 of the cast-in-place part include two vertical steel bars B32 arranged at the middle bending position of the connecting part 21 and two vertical steel bars A31 arranged at the bending positions on both sides of the connecting part 21. The two vertical steel bars A31 are shared at the bending positions on both sides of the two connecting parts 21 on both sides, and the middle bending positions of the two connecting parts 21 on both sides are embedded and bundled with the two vertical steel bars B32.

[0040] Among them, the connecting parts 21 on the two precast shear wall panels 1 are arranged at staggered intervals up and down, and the intervals are the same; this ensures the stability of the connection between the four cast-in-place vertical steel bars 3 and the two precast shear wall panels 1 and the balance of force.

[0041] Among them, two vertical steel bars A31 and two vertical steel bars B32 are connected and fixed through a vertical steel bar positioning frame. The vertical steel bar positioning frame is arranged at the middle position between the connecting parts 21 on both sides arranged in a staggered manner. The four cast-in-place vertical steel bars 3 are limited by the vertical steel bar positioning frame, so that the four cast-in-place vertical steel bars 3 form a whole, ensuring their structural performance.

[0042] In the first embodiment:

[0043] As Figure 5 shown, the vertical steel bar positioning frame is in a quadrilateral bending structure and is sleeved and fixed outside the four cast-in-place vertical steel bars 3 and is fixedly connected by wire bundling. The first vertical steel bar positioning frame 41 is in a quadrilateral structure and is arranged at an interval from the connecting parts 21 on both sides, achieving a good limiting and fixing effect on the four cast-in-place vertical steel bars 3, and the construction is simpler and more convenient.

[0044] In the second embodiment:

[0045] As Figure 6 shown, the vertical steel bar positioning frame is in a triangular structure and is sleeved and fixed outside two vertical steel bars B32 and one vertical steel bar A31 and is fixedly connected by wire bundling. The second vertical steel bar positioning frame 42 is in a triangular structure and is applied in pairs and is arranged at an interval from the connecting parts 21 on both sides to limit and fix two vertical steel bars B32 and one vertical steel bar A31. The two triangular structures have better structural performance.

[0046] In the third embodiment:

[0047] As Figure 7 shown, the vertical steel bar positioning frame is in a triangular structure and is sleeved and fixed outside two vertical steel bars A31 and one vertical steel bar B32 and is fixedly connected by wire bundling. The third vertical steel bar positioning frame 43 is in a triangular structure and is applied in pairs and is arranged at an interval from the connecting parts 21 on both sides to limit and fix two vertical steel bars A31 and one vertical steel bar B32. The two triangular structures have better structural performance.

[0048] The connecting part 21 and the corresponding pair of connecting steel bars 2 are integrally bent and formed. The connecting part 21 is integrally bent and formed by the connecting steel bars 2 extending from the inside of the precast shear wall panel 1, without welding points, and has better structural performance.

[0049] The present invention also provides a construction process for precast shear wall panels and cast-in-place parts, including the following steps:

[0050] S1: Place two precast shear wall panels 1 adjacent to each other so that the upper and lower positions of the bent portions on both sides of the connecting portion 21 on both sides correspond;

[0051] S2: Place a vertical steel bar positioning frame on the upper side of the connecting portion 21;

[0052] S3: Insert four vertical cast-in-place steel bars 3 from top to bottom, so that two vertical steel bars B32 are placed at the middle bent positions of the connecting portions 21 on both sides, and two vertical steel bars A31 are placed at the bent positions on both sides of the connecting portion 21. And the connecting portions 21 on both sides share two vertical steel bars A31. Move the two precast shear wall panels 1 away from each other and adjust until the two vertical steel bars A31 are clamped and limited to the connecting portion 21 on both sides;

[0053] S4: Bind and fix the vertical cast-in-place steel bars 3 and the connecting portion 21 with steel wires;

[0054] S5: Adjust the vertical position of the vertical steel bar positioning frame, and bind and fix the vertical steel bar positioning frame and the four vertical cast-in-place steel bars 3 with steel wires;

[0055] S6: Support the cast-in-place space and pour concrete.

[0056] The connection structure and construction technology of the precast shear wall panel and the cast-in-place part use the connecting portion 21 with an M-shaped bend to clamp and position the four vertical cast-in-place steel bars 3. Especially the two vertical steel bars A31 at the bent positions on both sides of the connecting portion 21 can realize the reliable connection and precise positioning of the two precast shear wall panels 1 on the left and right. When pouring concrete, the connecting portions 21 on both sides are clamped by the vertical cast-in-place steel bars 3 to prevent the precast shear wall panel 1 from shifting outwards, ensuring the pouring quality of the cast-in-place part and the construction quality. The overall structure is simple, the construction is convenient, and the practicability is good.

[0057] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is the difference from other embodiments. For the same and similar parts between each embodiment, reference can be made to each other.

[0058] The terms "upper", "lower", "outer side", "inner side", etc. in the specification, claims and above-mentioned drawings of the present invention, if any, are used to distinguish the relative relationship in position and do not need to be given a qualitative definition. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any deformation thereof are intended to cover non-exclusive inclusion.

[0059] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A construction process for precast shear wall panels and cast-in-place parts, characterized in that, A connection structure between a precast shear wall panel and a cast-in-place part is adopted. The connection structure between the precast shear wall panel and the cast-in-place part includes two adjacent precast shear wall panels (1). On the adjacent side end faces of the two precast shear wall panels (1), paired connecting steel bars (2) are extended. The ends of the connecting steel bars (2) are connected through a connecting part (21) with an M-shaped bend. Vertical cast-in-place part vertical steel bars (3) are respectively penetrated and fixed at the bending positions of the connecting parts (21) of the two precast shear wall panels (1). The cast-in-place part vertical steel bars (3) include two vertical steel bars B (32) arranged at the middle bending positions of the connecting part (21) and two vertical steel bars A (31) arranged at the bending positions on both sides of the connecting part (21). The two vertical steel bars A (31) and the two vertical steel bars B (32) are connected and fixed through a vertical steel bar positioning frame; It includes the following steps: S1: Place the two precast shear wall panels (1) adjacent to each other so that the bending positions on both sides of the connecting parts (21) on both sides correspond up and down; S2: Place a vertical steel bar positioning frame on the upper side of the connecting part (21); S3: Penetrate four cast-in-place part vertical steel bars (3) from top to bottom so that the two vertical steel bars B (32) are placed at the middle bending positions of the connecting parts (21) on both sides, and the two vertical steel bars A (31) are placed at the bending positions on both sides of the connecting part (21). And the two connecting parts (21) on both sides share the two vertical steel bars A (31). Move the two precast shear wall panels (1) away from each other and adjust until the two vertical steel bars A (31) clamp and limit the two sides of the connecting part (21); S4: Bind and fix the cast-in-place part vertical steel bars (3) and the connecting part (21) with steel wires; S5: Adjust the up and down positions of the vertical steel bar positioning frame and bind and fix the vertical steel bar positioning frame and the four cast-in-place part vertical steel bars (3) with steel wires; S6: Support the cast-in-place part space and pour concrete.

2. The construction process of the precast shear wall panel and the cast-in-place part according to claim 1, characterized in that, The cast-in-place part vertical steel bars (3) and the connecting part (21) are bound and fixed with steel wires.

3. The construction process of the precast shear wall panel and the cast-in-place part according to claim 1, characterized in that The vertical steel bar positioning frame has a quadrilateral bending structure and is sleeved and fixed outside the four cast-in-place part vertical steel bars (3).

4. The construction process of the precast shear wall panel and the cast-in-place part according to claim 1, characterized in that, The vertical steel bar positioning frame has a triangular structure and is sleeved and fixed outside two vertical steel bars B (32) and one vertical steel bar A (31).

5. The construction process of the precast shear wall panel and the cast-in-place part according to claim 1, characterized in that, The vertical steel bar positioning frame has a triangular structure and is sleeved and fixed outside two vertical steel bars A (31) and one vertical steel bar B (32).

6. The construction process of the precast shear wall panel and the cast-in-place part according to claim 1, characterized in that, The connecting parts (21) on the two precast shear wall panels (1) are arranged in a staggered manner up and down at intervals.

7. The construction process of the precast shear wall panel and the cast-in-place part according to claim 1, characterized in that, The connecting part (21) and the corresponding paired connecting steel bars (2) are integrally bent and formed.

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