Fabricated thin-wall profiled steel sheet composite wall

Abstract

The invention discloses a fabricated thin-wall profiled steel sheet composite wall which comprises a covering body and a pouring concrete layer located in a cavity formed by the covering body, and the covering body comprises edge columns located on the left side and the right side and composite plate layers fixedly connected with the front side faces and the rear side faces of the edge columns. The combined plate layer sequentially comprises an external decorative plate, a heat preservation layer located on the inner side of the external decorative plate, a profiled steel plate located on the inner side of the heat preservation layer and an internal reinforcing mesh located on the inner side of the profiled steel plate from outside to inside, and the external decorative plate, the heat preservation layer and the profiled steel plate are fixedly connected through external screws. The profiled steel sheet is a deep groove type profiled steel sheet, pipelines can be placed in the grooves, the formwork and measure cost is reduced, and the assembly rate is improved; structural members such as the profiled steel sheet, the steel member and the line pipe are manufactured in a factory, the characteristics of industrialization, standardization and integration are met, and the building cost can be reduced while material waste and damage on a building installation site are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to an assembled thin-wall corrugated steel plate combined wall. Background Art

[0002] The traditional shear wall system is composed of edge frame beams and reinforced concrete shear walls embedded in the edge frame. Reinforced concrete shear walls have high lateral stiffness and relatively low cost, and have been widely used in practical engineering. However, since they are cast in situ during construction, they require a large number of formwork and supports, a long construction period, and high technical requirements for construction workers; under the action of reciprocating seismic loads, concrete is prone to cracking, which causes the rapid degradation of stiffness, making the hysteresis performance of reinforced concrete shear walls poor, and unable to effectively realize the functions of energy consumption and shock absorption.

[0003] The composite wall of thin-walled corrugated steel plate is a type of shear wall system composed of thin-walled corrugated steel plate and reinforced concrete, which is an improvement on the traditional reinforced concrete shear wall. By combining thin-walled corrugated steel plate and reinforced concrete, the thin-walled corrugated steel plate can provide a template for pouring concrete, and the concrete can wrap the steel plate to play the role of heat preservation, heat insulation, and fire prevention. Shear connectors are set between the thin-walled corrugated steel plate and the reinforced concrete plate to enhance the coordination of the forces between the two. Due to the existence of out-of-plane undulations, the composite wall of thin-walled corrugated steel plate has a significantly increased bending stiffness in the strong axis direction. Its function is similar to placing some stiffening ribs in a certain direction of an ordinary flat steel plate shear wall to improve the bending stiffness in this direction. Due to the improvement of this bending stiffness, the elastic buckling load of the thin-walled corrugated steel plate composite wall under the action of in-plane shear force is significantly improved; in addition, due to the significant increase in out-of-plane stiffness, the thin-walled corrugated steel plate composite wall is not easy to deform under the action of external force, which is more convenient for the transportation and construction and installation of components, and is not easy to cause component deformation and geometric initial defects. In addition, the assembled thin-walled corrugated steel plate composite wall also contains an insulation layer, an external decorative panel, and a pipeline to achieve the integration of the composite wall. The existing thin-walled steel plate composite wall is mainly composed of flat steel plates. When setting up pipeline troughs, additional formwork is required, which increases the formwork and measures costs; and the structure of the existing thin-walled corrugated steel plate composite wall usually lacks sufficient sound insulation performance, resulting in indoor noise problems; the thermal conductivity of thin-walled corrugated steel plates is high, which easily leads to significant temperature changes in the building, and additional insulation measures are required to improve energy efficiency, resulting in waste and damage of materials at the installation site, and can also increase construction costs. Summary of the invention

[0004] The purpose of the present invention is to provide an assembled thin-wall corrugated steel plate composite wall to solve the problems of traditional buildings being non-green and environmentally friendly, complex in construction, high in resource consumption and poor in bearing performance.

[0005] The object of the present invention is achieved in that: A fabricated thin-wall corrugated steel plate composite wall comprises a covering body and a cast concrete layer in a cavity formed by the covering body, the covering body comprises edge columns on left and right sides, and a composite plate layer fixedly connected to the front and rear side surfaces of the edge columns, the composite plate layers comprising, from outside to inside, an external decorative plate, an insulation layer located on the inner side of the external decorative plate, a corrugated steel plate located on the inner side of the insulation layer, and an internal steel mesh located on the inner side of the corrugated steel plate, the external decorative plate, the insulation layer and the corrugated steel plate being fixedly connected by external screws.

[0006] The corrugated steel plates on the front and rear side surfaces are fixedly connected by tension bolts.

[0007] The groove of the corrugated steel plate is provided with a mounting hole for the tension bolts to pass through.

[0008] A grouting sleeve is arranged in the cavity of the combined wall and is located at the bottom of the longitudinal reinforcement. The grouting opening and the grouting discharge opening of the grouting sleeve pass through the combined board layer.

[0009] A U-shaped steel mesh is pre-embedded on the upper part of the internal steel mesh, and the U-shaped steel mesh is connected and fixed to the internal steel mesh by binding steel wires.

[0010] A pre-buried wire conduit is arranged between the thermal insulation layer and the corrugated steel plate.

[0011] The heat-insulating layer is consistent with the corrugation of the corrugated steel plate, and the pre-buried wire conduit is located in the groove between the heat-insulating layer and the corrugated steel plate.

[0012] The protrusions of the corrugated steel plate and the protrusions of the thermal insulation layer are provided with connection holes for passing external screws.

[0013] The beneficial effects of the present invention are: 1. The corrugated steel plate of the present invention is a deep-groove corrugated steel plate, which can utilize the grooves to place pipelines, thereby reducing the costs of formwork and measures, and improving the assembly rate and other advantages; 2. The corrugated steel plates, steel components, wire pipes and other structural parts involved in the present invention are all manufactured in the factory, meeting the characteristics of industrialization, standardization and integration, and can reduce construction costs while reducing material waste and damage at the construction installation site. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a front view of the present invention; Figure 3 A schematic diagram of the connection of the corrugated steel plates of the present invention; Figure 4 It is a schematic diagram of a U-shaped steel bar hook of the present invention; Figure 5 is a schematic diagram of a grouting sleeve of the present invention; Figure 6 It is a schematic diagram of the inner structure of the combined wall of the present invention; Figure 7 A schematic diagram of the outer structure of the combined wall of the present invention; Figure 8 Schematic diagram of the pre-buried wire conduit inside the combined wall of the present invention Figure 1 ; Fig. 9 Schematic diagram of the pre-buried wire conduit inside the combined wall of the present invention Figure 2 ; Fig.10 The present invention uses finite element simulation software to simulate the bearing capacity and energy dissipation capacity of thin-walled corrugated steel plate composite wall and reinforced concrete shear wall under low-cycle reciprocating loads, and a hysteresis curve comparison diagram; Fig.11 Comparison diagram of concrete stress damage of the present invention; In the figure: edge column 1, internal steel mesh 2, corrugated steel plate 3, grouting sleeve 4, U-shaped steel hook 5, tension bolt 6, screw 6a, washer 6b, nut 6c, insulation layer 7, external decorative panel 8, embedded wire tube 9, external screw 10, sleeve grouting hole 11. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] like Figure 1 to Figure 2 As shown, an assembled thin-walled corrugated steel plate composite wall comprises a covering body and a cast concrete layer in a cavity formed by the covering body, wherein the covering body comprises edge columns 1 located on the left and right sides, and a composite board layer fixedly connected to the front and rear sides of the edge columns 1, the edge columns 1 on the left and right sides and the composite board layers on the front and rear sides together form a cavity, and a concrete layer is cast in the cavity to form a thin-walled corrugated steel plate composite wall, wherein the composite board layers are, from outside to inside, an external decorative panel 8, an insulation layer 7 located inside the external decorative panel 8, a corrugated steel plate 3 located inside the insulation layer 7, and an internal steel mesh sheet 2 located inside the corrugated steel plate 3, and the external decorative panel 8, the insulation layer 7 and the corrugated steel plate 3 are fixedly connected by external screws 10. Before casting the prefabricated column 1, a portion of the steel mesh sheet 2 extending out of the composite wall body is extended into the prefabricated column 1 for casting, so as to realize the assembly of the thin-walled corrugated steel plate composite wall, integrate the column and the wall, and improve the connection strength of the column and the wall.

[0017] like Figure 3 As shown, the corrugated steel plates 3 on the front and rear sides are fixedly connected by tension bolts 6. The groove of the corrugated steel plate 3 is provided with a mounting hole for the tension bolts 6 to pass through. The tension bolts 6 include a screw rod 6a, a washer 6b and a nut 6c, and part of the screw rod 6a, the washer 6b and the nut 6c are embedded in the insulation layer 7.

[0018] like Figure 5As shown, a grouting sleeve 4 is placed in the cavity of the composite wall and is located at the bottom of the longitudinal reinforcement. The grouting port and the grouting port of the grouting sleeve 4 pass through the composite board layer. A grouting sleeve hole 11 is provided on the composite board layer so that the grouting sleeve 4 passes through the grouting sleeve hole 11. The provision of the grouting sleeve 4 facilitates the pouring of concrete in the cavity to form a concrete layer.

[0019] like Figure 4 As shown, a U-shaped steel mesh 5 is embedded in the upper part of the internal steel mesh 2, and the U-shaped steel mesh 5 is connected and fixed to the internal steel mesh 2 by binding steel wires. The U-shaped steel mesh 5 is convenient for lifting and moving the formed composite wall, thereby being easy to move.

[0020] like Figures 6 to 8 As shown, a pre-buried wire conduit 9 is provided between the insulation layer 7 and the corrugated steel sheet 3. The insulation layer 7 is consistent with the corrugation of the corrugated steel sheet 3, and the pre-buried wire conduit 9 is in the groove between the insulation layer 7 and the corrugated steel sheet 3, so there is no need to set up an additional pre-buried wire conduit 9, which simplifies the construction process.

[0021] like Fig. 9 As shown, the protrusions of the corrugated steel plate 3 and the protrusions of the insulation layer 7 are provided with connection holes for the external screws 10 to pass through, and the external decorative panel 8, the insulation layer 7 and the corrugated steel plate 3 are fixedly connected by the external screws 10, and the installation efficiency is high.

[0022] Working principle: Steel-concrete shear walls can give full play to the characteristics of the two materials through reasonable construction and form a good combination effect. The combined shear wall adopts the form of concrete filled in the corrugated steel plate 3. In terms of force mechanism, on the one hand, the corrugated steel plate 3 can provide good lateral constraints for the concrete, making it in a three-way compressive stress state, thereby improving the strength and ductility of the concrete; on the other hand, the concrete can also provide unilateral constraints for the corrugated steel plate 3, improve the buckling performance and bearing capacity of the steel, and thus produce the effect of 1+1 greater than 2. In addition, through the reasonable design of the vertical edge components, the vertical edge component insulation layer 7 and the external decorative panel 8 can be regarded as additional constraints on the steel-concrete composite shear wall, further improving the bearing capacity and ductility of the composite wall under the action of in-plane horizontal loads. In terms of processing and manufacturing, the corrugated steel plate 3 can be used as a template for concrete. At the same time, this type of shear wall can also realize industrialized production and assembly construction, reducing the amount of wet work on site and greatly shortening the construction period. The assembled thin-walled corrugated steel plate composite wall utilizes the shear elastic buckling load of corrugated steel plate which is much higher than that of flat steel plate, thus overcoming the shortcomings of flat steel plate composite shear wall, which is easy to buckle under shear and has poor hysteresis energy dissipation performance. The shear connector tension bolts 6 connect the corrugated steel plates 3 on both sides inside and outside, and form an overall earthquake-resistant structure under load. Filling the corrugated steel plate shear wall with an insulation layer 7 can effectively improve the thermal insulation performance of the wall. The thermal insulation material can reduce the heat transfer of the wall, keep the indoor temperature stable, and reduce the energy consumption of the building.

[0023] Simulation verification: The bearing capacity and energy dissipation capacity of thin-walled corrugated steel plate composite wall and reinforced concrete shear wall under low-cycle reciprocating loads are simulated by finite element simulation software. The hysteresis curve is compared. Fig.10 As shown in Figure 2, the stress damage of concrete is Fig.11 As shown in the figure. The corrugated steel plate composite wall has a higher peak load of about 1500 kN, which is significantly higher than the peak load of the reinforced concrete shear wall and has a stronger ultimate bearing capacity. The stiffness difference between the two structures in the small displacement stage is small, but with the increase of displacement, the stiffness of the reinforced concrete shear wall decreases faster, and the stiffness of the corrugated steel plate composite wall is better maintained, with better anti-deformation capacity. The hysteresis curve of the corrugated steel plate composite wall presents a wider ring, and its energy dissipation capacity is better than that of the reinforced concrete shear wall. The hysteresis curve of the reinforced concrete shear wall gradually narrows under larger displacements, and an obvious pinching effect appears, which indicates that its energy dissipation capacity weakens with the increase of displacement. The hysteresis loop area of ​​the corrugated steel plate composite wall is relatively stable in multiple cycles, and its energy dissipation capacity remains good. Under the same displacement conditions, the concrete damage distribution of the thin-walled corrugated steel plate composite wall is relatively uniform, and the overall damage value is mostly concentrated in green and yellow (0.5-0.8), and there is no large area of ​​red area in the wall. The concrete damage range of reinforced concrete shear walls is larger, and the damage values ​​are concentrated in the red and orange areas (>0.8). The concrete failure modes are mainly bottom shear cracking and local crushing caused by bending moment.

[0024] In addition, the prefabricated components involved in the present invention are all manufactured in the factory, so they are integrated, standardized and industrialized. The prefabricated components can be directly assembled after being transported to the site, which not only ensures the quality, but also significantly speeds up the overall construction progress, thereby effectively improving the construction efficiency. At the same time, this method also reduces the pollution to the surrounding air and is more conducive to environmental protection.

[0025] In summary, the present invention has the advantages of good bearing capacity, convenient construction, reduced formwork and measures costs, and being green and environmentally friendly.

Claims

1. An assembled thin-walled corrugated steel plate composite wall, characterized by: It includes a covering body and a cast concrete layer located in a cavity formed by the covering body. The covering body includes edge columns located on the left and right sides and a composite board layer fixedly connected to the front and rear sides of the edge columns. The composite board layers are, from the outside to the inside, an external decorative panel, an insulation layer located on the inner side of the external decorative panel, a corrugated steel sheet located on the inner side of the insulation layer, and an internal steel mesh located on the inner side of the corrugated steel sheet. The external decorative panel, the insulation layer and the corrugated steel sheet are fixedly connected by external screws.

2. According to claim 1, the assembled thin-walled corrugated steel plate composite wall is characterized in that: The corrugated steel plates on the front and rear side surfaces are fixedly connected by tension bolts.

3. According to claim 2, the assembled thin-walled corrugated steel plate composite wall is characterized in that: The groove of the corrugated steel plate is provided with a mounting hole for the tension bolts to pass through.

4. The assembled thin-walled corrugated steel plate composite wall according to claim 1 is characterized in that: A grouting sleeve is arranged in the cavity of the combined wall and is located at the bottom of the longitudinal reinforcement. The grouting opening and the grouting discharge opening of the grouting sleeve pass through the combined board layer.

5. According to claim 1, the assembled thin-walled corrugated steel plate composite wall is characterized in that: A U-shaped steel mesh is pre-embedded on the upper part of the internal steel mesh, and the U-shaped steel mesh is connected and fixed to the internal steel mesh by binding steel wires.

6. The assembled thin-walled corrugated steel plate composite wall according to claim 1 is characterized in that: A pre-buried wire conduit is arranged between the thermal insulation layer and the corrugated steel plate.

7. According to claim 6, the assembled thin-walled corrugated steel plate composite wall is characterized in that: The heat-insulating layer is consistent with the corrugation of the corrugated steel plate, and the pre-buried wire conduit is located in the groove between the heat-insulating layer and the corrugated steel plate.

8. The assembled thin-walled corrugated steel plate composite wall according to claim 1 is characterized in that: The protrusions of the corrugated steel plate and the protrusions of the thermal insulation layer are provided with connection holes for passing external screws.

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