Lightweight steel plate-concrete composite shear wall with transverse rib arrangement and connection method

Abstract

The present invention provides a light steel plate-concrete composite shear wall with transverse rib arrangement, comprising: a ribbed light steel plate, concrete, self-tapping screws and edge restraint members; the ribbed light steel plate is two parallel and oppositely arranged pieces, each of the ribbed light steel plates comprises at least two sub-steel plates, the two sub-steel plates are arranged along the height direction of the wall and fixedly connected by self-tapping screws; the edge restraint members are arranged at both ends of the ribbed light steel plate along the length direction, and are fixedly connected to the ribbed light steel plate by self-tapping screws to form a closed strip section, and the concrete is filled in the strip section. The present invention proposes a light steel plate-concrete composite shear wall with transverse rib arrangement, which has a simple structure, sufficient material utilization, and convenient and reliable connection, and a connection method.

Description

Technical Field

[0001] The invention relates to a building structure, in particular to a light steel plate-concrete composite shear wall with transversely arranged ribs and a connection method. Background Art

[0002] The steel plate-concrete composite shear wall is a new type of lateral force resisting member, which is composed of steel plates on both sides and concrete inside. During the construction stage, the steel plate can be used as a permanent formwork for concrete pouring. During the normal use stage, the steel plate can prevent the concrete cracks from being exposed and participate in the structural force, and the inner concrete can be arranged without or only with structural steel bars. It can be seen that the steel plate-concrete composite wall has good construction convenience and performance, and is worthy of promotion and application in engineering.

[0003] The thickness of the steel plate of the traditional steel plate-concrete composite shear wall is usually greater than 10mm. At the same time, in order to ensure that the steel plate and concrete can work together, shear-resistant connection structures such as stiffening ribs are required. Usually, the stiffening ribs are arranged vertically parallel to the wall height. However, in multi-story buildings, the shear wall bears a small axial force, while the shear force is relatively large. If the traditional steel plate-concrete composite shear wall construction measures are adopted, it will lead to problems such as a high steel content in the section, and the longitudinal stiffening ribs cannot effectively participate in resisting the horizontal shear force, resulting in insufficient utilization of the composite shear wall materials and poor economic efficiency.

[0004] The above problems can be solved by using light steel plates with strip ribs as outer steel plates. The thickness of light steel plates is 0.75-1.8 mm, and they are usually made of cold-rolled galvanized coils. They are lightweight, corrosion-resistant, and industrially standardized. The strip ribs can be effectively embedded in the concrete, which can enhance the collaborative working performance between the steel plate and the concrete, and effectively reduce the calculated width-to-thickness ratio of the steel plate, thereby improving the local stability of the steel plate. The transversely arranged strip ribs can also play the role of horizontally distributed steel bars, effectively participating in resisting horizontal shear forces, and fully utilizing the steel plate material.

[0005] The connection between the steel plates of the existing steel plate-concrete composite shear wall and the connection between the steel plate and the edge components usually require a large number of auxiliary materials such as steel plates and steel bars, and all involve welding. Welding operations have high requirements for welding personnel and construction conditions. In addition, earthquake damage shows that welds are prone to cracking under the action of earthquake reciprocating loads, resulting in a decrease in structural performance. Therefore, seeking a more convenient and reliable connection method is of great significance to the promotion and application of composite shear walls. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and to propose a light steel plate-concrete composite shear wall with horizontally arranged ribs and a connection method which has simple structure, sufficient material utilization, and convenient and reliable connection.

[0007] In order to solve the above technical problems, the present invention provides a light steel plate-concrete composite shear wall with transversely arranged ribs, comprising: a light steel plate with ribs, concrete, self-tapping screws and edge restraining members;

[0008] The ribbed light steel plates are two parallel and oppositely arranged plates, each of which comprises at least two sub-steel plates, and the two sub-steel plates are arranged along the height direction of the wall and fixedly connected by self-tapping screws;

[0009] The edge restraining members are arranged at both ends of the ribbed light steel plate along the length direction, and are fixedly connected to the ribbed light steel plate by self-tapping screws to form a closed strip section, and the concrete is filled in the strip section.

[0010] In a preferred embodiment: the sub-steel plate is a closed-end corrugated steel plate, a shrink-end corrugated steel plate or a steel plate with strip ribs, and the plate thickness is 0.75-1.8 mm.

[0011] In a preferred embodiment: the ribs are arranged along the transverse direction of the sub-steel plate.

[0012] In a preferred embodiment: the edge restraint member is a rectangular steel tube.

[0013] In a preferred embodiment: two longitudinal connecting plates are welded to the steel plate on one side of the rectangular steel tube, the spacing between the connecting plates is equal to the thickness of the shear wall, and the longitudinal connecting plates are provided with a plurality of long strip cuts along the height direction of the wall, and the positions of the cuts correspond to the positions of the ribs of the sub-steel plates.

[0014] In a preferred embodiment: the ribs are plugged into the cutouts so that the ribbed light steel plate and the rectangular steel tube have overlapping portions, and the overlapping portions are connected by self-tapping screws to form a closed strip section.

[0015] In a preferred embodiment: the edge restraining components are steel cages and edging steel plates.

[0016] In a preferred embodiment: the edging steel plate is a channel steel or a cold-bent U-shaped steel, and a plurality of long strip cuts are opened along the flange edge in the wall height direction, and the positions of the cuts correspond to the positions of the ribs of the sub-steel plate.

[0017] In a preferred embodiment: the ribs are plugged into the cutouts so that the ribbed light steel plate and the edging steel plate have overlapping portions, the overlapping portions are connected by self-tapping screws to form a closed strip section, and the steel cage is provided at predetermined positions at both ends of the section.

[0018] The present invention also provides a construction method of a light steel plate-concrete composite shear wall with transversely arranged ribs, which is characterized by comprising the following steps:

[0019] 1) Align and overlap the lower edge ribs of the upper steel plate with the upper edge ribs of the lower steel plate, and use self-tapping screws to connect the upper and lower steel plates to make them into ribbed light steel plates;

[0020] 2) Place the two spliced ​​ribbed light steel plates and the two edge restraint members in a predetermined relative position; wherein the ribbed light steel plate is used as the web steel plate of the combined shear wall, and the ribs are arranged transversely;

[0021] 3) The ribs of the ribbed light steel plate are wedged into the long strip cutouts of the edge restraining member. After the position is fixed, the ribbed light steel plate and the edge restraining member are connected with self-tapping screws to form a closed strip section groove.

[0022] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0023] The outstanding advantage of the light steel plate-concrete composite shear wall with transversely arranged ribs proposed in the present invention is that the steel plate is light and thin, the steel content of the composite wall section is low, and it has good applicability in multi-story buildings. The transversely arranged strip ribs not only improve the working performance between the outer steel plate and the inner concrete, but also the ribs can effectively participate in resisting horizontal loads, thereby improving the shear bearing capacity of the composite shear wall. Compared with traditional connection methods, the present invention greatly simplifies the construction process. Whether it is the connection between steel plates or the connection between steel plates and edge members, it only needs to be connected once by drilling, tapping, and fixing with self-tapping screws through electric tools. This connection method has reliable quality, simple operation, and low requirements for equipment and personnel. The present invention improves the mechanical properties and construction convenience of the steel plate-concrete composite shear wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the connection between ribbed light steel plates;

[0025] Figure 2 Three-dimensional diagram of each component of the light steel plate-concrete composite shear wall with transversely arranged ribs using rectangular steel tubes as edge restraint members;

[0026] Figure 3 Three-dimensional diagram of lightweight steel plate-concrete composite shear wall with transversely arranged ribs using rectangular steel tubes as edge restraint members;

[0027] Figure 4 Three-dimensional diagram of light steel plate-concrete composite shear wall with transverse rib arrangement using steel cage and edge steel plate for edge restraint components;

[0028] Figure 5 Top view of a light steel plate-concrete composite shear wall with transversely arranged ribs using steel cages and edging steel plates as edge restraint members;

[0029] Figure 6 Front view of a light steel plate-concrete composite shear wall with transversely arranged ribs using rectangular steel tubes as edge restraint members;

[0030] Figure 7 A top view of a light steel plate-concrete composite shear wall with transversely arranged ribs using rectangular steel tubes as edge restraint members;

[0031] In the figure: 1 - sub-steel plate; 2 - self-tapping screws; 3 - concrete; 4 - rectangular steel pipe; 5 - steel cage; 6 - edging steel plate; 7 - longitudinal steel bar; 8 - stirrups. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted 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 an indirect connection through an intermediate medium. It can be the internal connection 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.

[0035] refer to Figure 1 Align the lower edge ribs of the upper steel plate 1 with the upper edge ribs of the lower steel plate 1, and use self-tapping screws 2 to connect the upper and lower steel plates 1 to form a ribbed light steel plate. The spacing between the self-tapping screws is 50 to 150 mm.

[0036] refer to Figures 2 to 4, a ribbed transversely arranged light steel plate-concrete composite shear wall structure, which includes a ribbed light steel plate, a self-tapping screw 2, concrete 3 and an edge restraint member. The edge restraint member can be a rectangular steel pipe 4 or a steel cage 5 and an edge steel plate 6. The rectangular steel pipe 4 can be a cold-bent, welded steel pipe. Two longitudinal connecting plates are welded to the steel plate on one side of the steel pipe. The spacing of the connecting plates is equal to the thickness of the shear wall. The longitudinal connecting plate has a number of long strip cuts along the height direction. The length of the cut is 50 to 100 mm. The position of the cut corresponds to the position of the steel plate ribs, so that the ribs can be accurately wedged into the long strip cuts. After the spliced ​​ribbed light steel plate 1 and the rectangular steel pipe 4 are positioned according to the predetermined position, the self-tapping screw 2 is used to connect the ribbed light steel plate 1 and the rectangular steel pipe 4 to form a closed strip section. The self-tapping screw 2 is drilled, tapped, and fixed by an electric tool to complete the connection at one time. The ribs of the ribbed light steel plates 1 on both sides can be arranged in an aligned or staggered manner.

[0037] The edge restraint member may also be a steel cage 5 and a edging steel plate 6. The edging steel plate 6 may be a channel steel or a cold-bent U-shaped steel. The cross-sectional height of the edging steel plate 6 is equal to the wall thickness. The flange edge of the edging steel plate 6 is provided with a plurality of long strip cuts along the height direction of the wall. The length of the cuts is 50 to 100 mm. The positions of the cuts correspond to the positions of the steel plate ribs, so that the ribs can be accurately wedged into the long strip cuts. After the ribbed light steel plate 1 and the edging steel plate 6 are positioned at a predetermined position, the self-tapping screws 2 are used to connect the ribbed light steel plate 1 and the edging steel plate 6 to form a closed strip section. The steel cage 5 includes longitudinal steel bars 7 and stirrups 8. The steel cage 5 is respectively arranged at the ends of both sides of the closed strip section. The structural requirements may refer to the provisions on the edge members of reinforced concrete shear walls in the Code for Seismic Design of Buildings GB 50011-2010.

[0038] The concrete 3 is filled in the strip-shaped section, and the concrete 3 may be ordinary concrete, lightweight concrete or high-performance concrete.

[0039] The construction method of the present invention is:

[0040] First, align and overlap the lower edge ribs of the sub-steel plate 1 with the upper edge ribs of the sub-steel plate 1, and use self-tapping screws 2 to connect the upper and lower sub-steel plates 1 to make them a whole. According to the requirements of the wall height, complete the splicing of several sub-steel plates 1 in sequence. After that, place the two spliced ​​ribbed light steel plates and two edge constraint members in a predetermined relative position. Among them, the ribbed light steel plate 1 is used as the web steel plate of the combined shear wall, and the ribs are arranged horizontally. The steel plate ribs are wedged into the long strip cutouts of the edge member connecting plate. After fixing the position, use self-tapping screws 2 to connect the ribbed light steel plate 1 and the edge member to form a closed strip section groove. If the edge member uses a steel cage 5, the steel cage 5 is placed on both sides of the strip section respectively, and finally concrete 3 is poured in the closed strip section. When the concrete 3 meets the maintenance requirements, the construction of the present invention is completed.

[0041] The above is only a preferred specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. Rib transversely arranged light steel plate-concrete composite shear wall, characterized by include: Ribbed light steel plates, concrete, self-tapping screws, and edge restraints; The ribbed light steel plates are two parallel and oppositely arranged plates, each of which comprises at least two sub-steel plates, and the two sub-steel plates are arranged along the height direction of the wall and fixedly connected by self-tapping screws; The edge restraining members are arranged at both ends of the ribbed light steel plate along the length direction, and are fixedly connected to the ribbed light steel plate by self-tapping screws to form a closed strip section, and the concrete is filled in the strip section; The sub-steel plate is a steel plate with strip ribs, and the plate thickness is 0.75-1.8 mm; The edge restraining member is a rectangular steel tube; two longitudinal connecting plates are welded to the steel plate on one side of the rectangular steel tube, the spacing between the connecting plates is equal to the thickness of the shear wall, and the longitudinal connecting plate has a plurality of long strip cuts along the wall height direction, and the position of the cuts corresponds to the position of the ribs of the sub-steel plate.

2. The light steel plate-concrete composite shear wall with transversely arranged ribs according to claim 1 is characterized in that: The ribs are arranged along the transverse direction of the sub-steel plate.

3. The light steel plate-concrete composite shear wall with transversely arranged ribs according to claim 1 is characterized in that: The ribs are plugged into the cutouts so that the ribbed light steel plate and the rectangular steel pipe have overlapping portions, and the overlapping portions are connected by self-tapping screws to form a closed strip section.

4. Rib transversely arranged light steel plate-concrete composite shear wall, characterized by include: Ribbed light steel plates, concrete, self-tapping screws, and edge restraints; The ribbed light steel plates are two parallel and oppositely arranged plates, each of which comprises at least two sub-steel plates, and the two sub-steel plates are arranged along the height direction of the wall and fixedly connected by self-tapping screws; The edge restraining members are arranged at both ends of the ribbed light steel plate along the length direction, and are fixedly connected to the ribbed light steel plate by self-tapping screws to form a closed strip section, and the concrete is filled in the strip section; The sub-steel plate is a steel plate with strip ribs, and the plate thickness is 0.75-1.8 mm; The edge restraining components are a steel cage and an edge steel plate; the edge steel plate is a channel steel, and a plurality of long strip cuts are opened along the flange edge in the wall height direction, and the positions of the cuts correspond to the positions of the ribs of the sub-steel plate.

5. The light steel plate-concrete composite shear wall with transversely arranged ribs according to claim 4 is characterized in that: The ribs are plugged into the cutouts so that the ribbed light steel plate and the edging steel plate have overlapping portions, and the overlapping portions are connected by self-tapping screws to form a closed strip section, and the steel cages are arranged at predetermined positions at both ends of the section.

6. A construction method for a light steel plate-concrete composite shear wall with transversely arranged ribs as claimed in any one of claims 1 to 5, characterized in that The steps include: 1) Align and overlap the lower edge ribs of the upper steel plate with the upper edge ribs of the lower steel plate, and use self-tapping screws to connect the upper and lower steel plates to make them into ribbed light steel plates; 2) Place the two spliced ​​ribbed light steel plates and two edge restraint members in predetermined relative positions; the ribbed light steel plates are used as the web steel plates of the combined shear wall, and the ribs are arranged transversely; 3) The ribs of the ribbed light steel plate are wedged into the long strip cutouts of the edge restraint member. After the position is fixed, the ribbed light steel plate and the edge restraint member are connected with self-tapping screws to form a closed strip section groove.

Images