Composite thermal insulation prefabricated steel-concrete shear wallboard and connecting method

Abstract

A composite thermal insulation prefabricated steel-concrete shear wallboard and a connecting method thereof relate to the technical field of constructional engineering, the composite thermal insulation prefabricated steel-concrete shear wallboard sequentially comprises a concrete slab, a steel skeleton and a thermal insulation board from inside to outside, the inner and outer side surfaces of the steel skeleton are respectively and fixedly provided with a steel bar net rack, and the steel skeleton comprises a plurality of vertical steel members arranged at intervals; steel screens matched with the steel members in length are connected between the adjacent steel members, and the steel screens are close to the inner side of the steel framework; the concrete plate is formed on the inner side face of the steel framework and the inner side face of the steel plate net and wraps the reinforcing steel bar net frame located on the side, and the connecting end of the reinforcing steel bar net frame extends out of the concrete plate. The steel members located at the left end and the right end are provided with elevation adjusting positioners, and the elevation adjusting positioners are used for connecting and adjusting the elevations of the upper wall plate and the lower wall plate which are adjacent. By means of the mechanical elevation positioning and core-pulling-free concrete forming structure, the production and construction efficiency is effectively improved, and meanwhile the structural reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering, and particularly relates to a composite thermal insulation prefabricated steel-concrete shear wall panel and a connecting method. BACKGROUND

[0002] In the field of fabricated buildings, the connection precision and construction efficiency of prefabricated shear wall panels directly affect the overall engineering quality and progress. In traditional construction, the vertical connection of upper and lower shear wall panels usually adopts a steel sleeve grouting or bolt connection method, which needs to rely on on-site measurement, manual spacer adjustment and secondary grouting fixation. The elevation control precision is greatly affected by human factors, and cumulative errors are prone to occur. At the same time, in order to form a concrete pouring channel in the wall panel to facilitate the subsequent lap joint of vertical steel bars, the existing process usually needs to pre-embed a core-pulling pipe, which is pulled out after pouring to form a cavity. This process not only increases the complexity of the process, but also easily causes concrete blockage or hole wall damage due to incomplete pipe pulling, affecting the integrity of the new and old concrete during subsequent pouring.

[0003] The above traditional method has obvious limitations: first, the elevation adjustment relies on manual layer-by-layer calibration, which is low in efficiency and difficult to ensure precision, especially in multi-layer superposition construction, the error accumulation problem is prominent; second, the core-pulling pipe process has construction hazards, which increases the complexity of factory prefabrication and may weaken the overall integrity of the wall. Therefore, there is an urgent need for a new shear wall panel connection technology that can achieve fast and accurate elevation positioning while optimizing the concrete pouring process. SUMMARY

[0004] One of the purposes of the present application is to provide a composite thermal insulation prefabricated steel-concrete shear wall panel, which uses mechanical elevation positioning and core-pulling-free concrete forming structure to improve production and construction efficiency and at the same time improve structural reliability.

[0005] In order to solve the above technical problems, the present application adopts the following technical scheme: a composite thermal insulation prefabricated steel-concrete shear wall panel, which comprises a concrete panel, a steel framework and a thermal insulation panel from inside to outside, the inner and outer sides of the steel framework are respectively fixed with a steel mesh frame, the steel framework comprises a plurality of vertical steel members arranged at intervals, a steel sheet mesh matching the length of the steel member is connected between adjacent steel members, and the steel sheet mesh is close to the inner side of the steel framework; the concrete panel is formed on the inner side of the steel framework and the steel sheet mesh, and wraps the steel mesh frame on that side, and the connecting end of the steel mesh frame extends from the concrete panel; the steel members at the left and right ends are provided with elevation adjustment positioners, and the elevation adjustment positioners are used to connect and adjust the elevation of adjacent wall panels above and below.

[0006] Preferably, a plurality of rib strips are arranged at intervals on the surface of the steel sheet mesh. The length of the rib strip matches the width of the steel sheet mesh, and the rib strip is arranged on the surface of the steel sheet mesh facing the inside of the steel framework.

[0007] More preferably, the steel member comprises two end I-beams respectively located at left and right ends and a plurality of middle I-beams located between the two end I-beams, and the end I-beams and the middle I-beams are all provided with a plurality of through holes spaced apart along respective length directions.

[0008] More preferably, the end I-beams are both provided with end plates horizontally arranged at upper and lower ends, and the end plates are provided with two connecting holes, and the elevation adjustment positioners are two in number and connected to the end plates through the corresponding connecting holes.

[0009] More preferably, the elevation adjustment positioner comprises a screw rod penetrating the connecting hole of the end plate, an upper nut and a lower nut threadedly connected to the screw rod, and an elevation gasket located between the upper nut and the lower nut and used for adjusting to an elevation position to abut against the end plate of the upper end I-beam, and the upper nut and the lower nut are respectively used for abutting against the side of the upper and lower two adjacent end plates away from the elevation gasket.

[0010] More preferably, the through holes on the end I-beams are square holes, the through holes on the middle I-beams are round holes, and the number of the through holes of the middle I-beams is less than that of the end I-beams.

[0011] More preferably, the insulation board is fixed to the outer side of the steel framework through a plurality of metal insulation connecting pieces, the outer end surface of the steel member is provided with a plurality of fixed nuts spaced apart along the length direction, the metal insulation connecting piece comprises a head and a rod portion with a diameter smaller than that of the head, the end of the rod portion is provided with a thread, and the rod portion of the metal insulation connecting piece penetrates the insulation board and is connected with the fixed nut.

[0012] More preferably, the steel mesh frame comprises a plurality of vertical steel bars and a plurality of horizontal steel bars arranged in a longitudinal and transverse manner, the horizontal steel bars are welded to the steel framework, and the vertical steel bars are welded to the horizontal steel bars.

[0013] In addition, the application also provides a connecting method of the composite insulation prefabricated steel-concrete shear wall plate, that is, when connecting two composite insulation prefabricated steel-concrete shear wall plates, the method comprises the following steps:

[0014] S1, installing the elevation adjustment positioner on the end plate of the end I-beam of the lower composite insulation prefabricated steel-concrete shear wall plate;

[0015] S2, pouring the floor concrete and the shear wall plate concrete to fix the lower composite insulation prefabricated steel-concrete shear wall plate;

[0016] S3, adjusting the height of the elevation gasket to a specified elevation;

[0017] S4, hoist the upper composite thermal insulation prefabricated steel reinforced concrete shear wall panel to the installation position, and make the screw rod of the elevation adjustment positioner pass through the end plate connecting hole of the end I-beam of the upper composite thermal insulation prefabricated steel reinforced concrete shear wall panel, then screw the upper nut on the screw rod, so as to press the end plate of the upper composite thermal insulation prefabricated steel reinforced concrete shear wall panel on the elevation gasket, thereby completing the fixed connection of the upper composite thermal insulation prefabricated steel reinforced concrete shear wall panel.

[0018] Compared with the prior art, the beneficial effects of the present application are that:

[0019] 1. By prefabricating steel frame, steel mesh frame and steel sheet mesh in the factory, a solid three-dimensional space frame is formed. The formed concrete slab wraps and anchors the inner steel mesh frame, and is tightly combined with the space frame, so that the wall panel has excellent overall performance, bending and shear performance, load bearing capacity and seismic performance are greatly improved.

[0020] 2. The wall panel is prefabricated in the factory, and the thermal insulation layer and the concrete structure layer are integrated, realizing the integration of thermal insulation and structure, completely avoiding the secondary thermal insulation construction on site, greatly shortening the construction period. Especially the setting of the elevation adjustment positioner at both ends enables quick and accurate elevation fine adjustment and connection of adjacent wall panels on site, completely solving the industry pain points of difficult adjustment, long time consumption and additional support during installation of traditional prefabricated wall, realizing efficient and high-precision assembly construction.

[0021] 3. The internal space frame uses steel sheet mesh, which eliminates the complex process of traditional core-pulling hole-forming, simplifies the production process, improves production efficiency and reduces cost. All key processes are completed in the factory, the quality is stable and controllable, effectively avoiding human uncertainty during on-site construction, ensuring the uniformity and durability of component quality, and reducing the maintenance cost in the later period. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure in the embodiment;

[0023] Figure 2 It is a schematic diagram of the structure of the steel frame in the embodiment;

[0024] Figure 3 It is a schematic diagram of the structure of the wall panel in the embodiment;

[0025] Figure 4 It is a schematic diagram of the structure of the end I-beam and the metal thermal insulation connecting piece in the embodiment;

[0026] Figure 5 It is a schematic diagram of the structure of the intermediate I-beam and the metal thermal insulation connecting piece in the embodiment;

[0027] Figure 6 It is a schematic diagram of the structure of the intermediate I-beam and the metal thermal insulation connecting piece in the embodiment;Figure 5 An enlarged schematic view of the structure at point A in the figure;

[0028] Figure 7 A schematic view of the installation of the height adjustment positioner in the end plate in the embodiment;

[0029] Figure 8 A schematic view of the connection of the height adjustment positioner to the upper and lower end plates in the embodiment.

[0030] In the figure:

[0031] 1, concrete plate; 2, insulation plate; 3, steel reinforcement frame; 3a, vertical steel reinforcement; 3b, horizontal steel reinforcement; 4, steel mesh; 4a, rib; 5, end I-beam; 5a, end plate; 6, middle I-beam; 7a, screw rod; 7b, upper nut; 7c, lower nut; 7d, height spacer; 8, metal insulation connecting piece; 9, fixing nut. DETAILED DESCRIPTION

[0032] For the convenience of those skilled in the art, the present application will be further described below in conjunction with the embodiments and the accompanying drawings, and the content mentioned in the embodiments is not a limitation on the present application.

[0033] It needs to be pointed out in advance that in the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances. In addition, in the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include the first and second features in direct contact, or can include the first and second features not in direct contact but in contact through another feature between them.

[0034] As Figures 1 to 3 shown, a composite insulation prefabricated steel shear wall plate comprises, from the inside out, a concrete plate 1, a steel framework, and an insulation plate 2, the inner and outer sides of the steel framework are respectively fixed with a steel reinforcement frame 3, the steel framework comprises a plurality of vertical steel members arranged at intervals, a steel mesh 4 matching the length of the steel member is connected between adjacent steel members, and the steel mesh 4 is next to the inner side of the steel framework; the concrete plate 1 has a thickness of 50 mm and is formed on the inner side of the steel framework and the steel mesh 4, and wraps the steel reinforcement frame 3 on that side, and the connecting end of the steel reinforcement frame 3 extends out of the concrete plate 1; the steel members at the left and right ends are provided with a height adjustment positioner, which is used to connect and adjust the height of adjacent wall plates above and below.

[0035] The steel plate net 4 is a plate structure with mesh holes, and a plurality of ribs 4a are arranged on the surface of the steel plate net 4 at intervals, the length of the rib 4a matches the width of the steel plate net 4, and the rib 4a is arranged on the surface of the steel plate net 4 facing the inside of the steel framework. Then, the wallboard finally forms a cavity sandwich structure with concrete 1 and insulation board 2 on both sides and a steel framework in the middle, so that during the subsequent construction of the wallboard, the new concrete can be poured into the cavity and better combined with the old concrete (i.e. concrete board 1), because the rib 4a can significantly enhance the mechanical engagement and anchoring effect with the internal newly poured concrete, so that the newly poured concrete and the steel plate net 4 are not simply planar bonded, thereby effectively improving the bonding strength and load transfer efficiency between the two, and the concrete board 1 is combined with the steel plate net 4 in advance, so that the new and old concrete can achieve better bonding effect.

[0036] As shown in Figure 4 and Figure 5 , the steel member in the embodiment includes two end I-beams 5 respectively located at the left and right ends and a plurality of intermediate I-beams 6 located between the two end I-beams 5, and the end I-beams 5 and the intermediate I-beams 6 are both provided with a plurality of through holes at intervals along the respective length directions. Moreover, the through holes on the end I-beams 5 are square holes, the through holes on the intermediate I-beams 6 are round holes, and the number of the through holes of the intermediate I-beams 6 is less than that of the end I-beams 5. By arranging square holes and round holes, the steel member can enhance the mechanical engagement with the concrete, improve the shear strength and load transfer efficiency of the wallboard, and reduce the self-weight of the member while ensuring the fluidity of the concrete.

[0037] The upper and lower ends of the end I-beam 5 are both provided with an end plate 5a arranged horizontally, the end plate 5a is provided with two connecting holes, and the number of the elevation adjustment locators is two and they are connected to the end plate 5a through the corresponding connecting holes. Figure 7 and Figure 8 As shown in the drawings, the elevation adjustment locator includes a screw rod 7a penetrating the connecting hole of the end plate 5a, an upper nut 7b and a lower nut 7c threadedly connected to the screw rod 7a, and an elevation gasket 7d located between the upper nut 7b and the lower nut 7c and used to adjust to the elevation position to abut against the end plate 5a of the end I-beam 5 above, and the upper nut 7b and the lower nut 7c are respectively used to abut against one side of the upper and lower adjacent two end plates 5a away from the elevation gasket 7a. The structure of the elevation adjustment locator realizes the quick, accurate fine adjustment and firm locking of the vertical elevation when connecting the upper and lower prefabricated wallboards through the cooperation of the screw rod, the nut and the gasket. The double-nut design can effectively clamp the upper and lower components to ensure reliable load transfer; the unique adjustable gasket as the reference pressure bearing surface completely eliminates the elevation cumulative error in traditional construction, greatly improving the precision and efficiency of the assembly construction. As a preferred, the structure of the elevation gasket 7d can be a square gasket, thereby realizing a larger contact area bearing in cooperation with the end plate 5a.

[0038] The thermal insulation board 2 in the embodiment is fixed to the outer side of the steel skeleton through a plurality of metal thermal insulation connecting pieces 8, a plurality of fixed nuts 9 are arranged on the outer end surface of the steel member along the length direction at intervals, the metal thermal insulation connecting piece 8 comprises a head part and a rod part with a smaller diameter than the head part (as shown in Figure 6 The end of the rod part is provided with a thread, the rod part of the metal thermal insulation connecting piece 8 passes through the thermal insulation board 2 and is connected with the fixed nut 9. All connection operations can be completed on the outer side of the wallboard, which greatly simplifies the construction process and improves the installation efficiency and quality.

[0039] In addition, the steel mesh frame 3 comprises a plurality of vertical steel bars 3a and a plurality of horizontal steel bars 3b arranged in a longitudinal and transverse manner, the horizontal steel bars 3b are welded to the steel skeleton, and the vertical steel bars 3a are welded to the horizontal steel bars 3b.

[0040] Another innovation of the present application is that the elevation adjustment positioner is used to realize the quick and accurate elevation fine adjustment and connection of the upper and lower wallboards. The specific connection steps are as follows:

[0041] S1, the elevation adjustment positioner is installed on the end plate 5a of the end of the I-shaped steel 5 of the lower composite thermal insulation prefabricated steel shear wallboard.

[0042] S2, pouring floor concrete and shear wallboard concrete to fix the lower composite thermal insulation prefabricated steel shear wallboard.

[0043] S3, adjust the height of the elevation gasket 7d to the specified elevation.

[0044] S4, hoist the upper composite thermal insulation prefabricated steel shear wallboard to the installation position, make the screw rod 7a of the elevation adjustment positioner pass through the end plate 5a connecting hole of the end of the I-shaped steel 5 of the upper composite thermal insulation prefabricated steel shear wallboard, and then screw the upper nut 7b on the screw rod 7a, so as to press the end plate 5a of the upper composite thermal insulation prefabricated steel shear wallboard on the elevation gasket 7d, forming the state as shown in Figure 8 S4, hoist the upper composite thermal insulation prefabricated steel shear wallboard to the installation position, make the screw rod 7a of the elevation adjustment positioner pass through the end plate 5a connecting hole of the end of the I-shaped steel 5 of the upper composite thermal insulation prefabricated steel shear wallboard, and then screw the upper nut 7b on the screw rod 7a, so as to press the end plate 5a of the upper composite thermal insulation prefabricated steel shear wallboard on the elevation gasket 7d, forming the state as shown in

[0045] The technical principle core of the connection method is to replace the traditional method of relying on artificial measurement and gasket leveling with a precisely adjustable mechanical structure, achieving standardization and controllability of vertical connection. Specifically, first, a pre-positioning and bearing foundation is established: that is, by pre-installing the elevation adjustment positioner on the end of the I-beam 5 of the lower wall panel, and after pouring concrete, it is completely fixed, thereby forming a stable and elevation reference clear connection foundation. Then, a unique design of elevation gasket 7d is used, which can be precisely lifted along the screw rod 7a by rotating, achieving stepless and linear adjustment of the elevation value. The elevation gasket 7d eventually serves as the direct bearing surface of the upper wall panel, and its height position directly determines the installation elevation of the upper member. Finally, reliable mechanical locking is achieved, when the upper wall panel is hoisted into place, its dead weight is borne by the elevation gasket 7d, then by tightening the upper nut 7b, the huge pretightening force generated by the threaded pair firmly clamps the end plate 5a of the upper and lower wall panels between the elevation gasket and the nut, forming a rigid node connection, ensuring effective transfer of vertical loads. This method has achieved excellent results in terms of construction efficiency, precision control and structural reliability. Especially in the construction site, the traditional vertical elevation adjustment even needs to use inclined braces to support the wall panel, while using this connection method, the complex and tedious steps can be omitted, making the connection operation of the upper and lower wall panels fast and simple, greatly improving the construction speed of prefabricated buildings.

[0046] In order to make the ordinary skilled in the art more convenient to understand the improvement of the present application over the prior art, some drawings and descriptions of the present application have been simplified, and the above examples are the preferred implementation of the present application, in addition to this, the present application can be implemented in other ways, any obvious replacement within the concept of the present technical solution without departing from the present technical solution is within the protection scope of the present application.

Claims

1. A composite insulated precast steel-concrete shear wall panel, comprising, from the inside out, a concrete slab (1), a steel frame, and an insulation board (2), characterized in that: The steel frame is fixed with steel mesh (3) on both the inner and outer sides. The steel frame includes multiple vertical steel members arranged at intervals. A steel plate mesh (4) matching the length of the steel member is connected between adjacent steel members. The steel plate mesh (4) is close to the inner side of the steel frame. The concrete slab (1) is formed on the inner side of the steel frame and steel mesh (4) and wraps the steel mesh frame (3) located on that side. The connecting end of the steel mesh frame (3) extends out from the concrete slab (1). The steel components located at the left and right ends are equipped with elevation adjustment locators, which are used to connect and adjust the elevation of adjacent wall panels.

2. The composite thermal insulation precast steel-concrete shear wall panel according to claim 1, characterized in that: The steel mesh (4) has multiple ribs (4a) spaced apart on its surface.

3. The composite thermal insulation precast steel-concrete shear wall panel according to claim 2, characterized in that: The length of the rib (4a) matches the width of the steel mesh (4) and is disposed on the surface of the steel mesh (4) facing the inside of the steel frame.

4. The composite thermal insulation precast steel-concrete shear wall panel according to claim 1, characterized in that: The steel component includes two end H-beams (5) located at the left and right ends respectively and multiple intermediate H-beams (6) located between the two end H-beams (5). Both the end H-beams (5) and the intermediate H-beams (6) are provided with multiple through holes spaced apart along their respective length directions.

5. The composite thermal insulation precast steel-concrete shear wall panel according to claim 4, characterized in that: Both ends of the end I-beam (5) are horizontally provided with end plates (5a). The end plates (5a) are provided with two connecting holes. The number of the elevation adjustment locators is two, and they are respectively connected to the end plates (5a) through the corresponding connecting holes.

6. The composite thermal insulation precast steel-concrete shear wall panel according to claim 5, characterized in that: The elevation adjustment locator includes a screw (7a) passing through the connection hole of the end plate (5a), an upper nut (7b) and a lower nut (7c) threaded to the screw (7a), and an elevation shim (7d). The elevation shim (7d) is located between the upper nut (7b) and the lower nut (7c) and is used to adjust to the elevation position to abut against the end plate (5a) of the upper end of the I-beam (5). The upper nut (7b) and the lower nut (7c) are respectively used to abut against the side of the two adjacent end plates (5a) away from the elevation shim (7a).

7. The composite thermal insulation precast steel-concrete shear wall panel according to claim 4, characterized in that: The through holes on the end I-beam (5) are square holes, and the through holes on the middle I-beam (6) are round holes. The number of through holes on the middle I-beam (6) is less than the number of through holes on the end I-beam (5).

8. The composite thermal insulation precast steel-concrete shear wall panel according to claim 1, characterized in that: The insulation board (2) is fixed to the outer side of the steel frame by multiple metal insulation connectors (8). Multiple fixing nuts (9) are spaced apart on the outer end face of the steel component along its length. The metal insulation connector (8) includes a head and a rod with a diameter smaller than the head. The end of the rod is threaded. The rod of the metal insulation connector (8) passes through the insulation board (2) and is connected to the fixing nuts (9).

9. The composite thermal insulation precast steel-concrete shear wall panel according to claim 1, characterized in that: The steel mesh (3) includes multiple vertical steel bars (3a) and multiple horizontal steel bars (3b) arranged in a crisscross pattern. The horizontal steel bars (3b) are welded to the steel frame, and the vertical steel bars (3a) are welded to the horizontal steel bars (3b).

10. A method for connecting the composite thermal insulation precast steel-concrete shear wall panel as described in claim 6, characterized in that, Includes the following steps: S1. Install the elevation adjustment locator on the end plate (5a) of the end I-beam (5) of the lower composite insulated precast steel-concrete shear wall panel; S2. Pour concrete for the floor slab and shear wall panels to fix the composite insulated precast steel-concrete shear wall panels below. S3. Adjust the height of the elevation shim (7d) to the specified elevation; S4. Hoist the upper composite insulated precast steel-concrete shear wall panel to the installation position, and make the screw (7a) of the elevation adjustment locator pass through the connection hole of the end plate (5a) of the end I-beam (5) of the upper composite insulated precast steel-concrete shear wall panel. Then screw the upper nut (7b) onto the screw (7a) to press the end plate (5a) of the upper composite insulated precast steel-concrete shear wall panel onto the elevation shim (7d), thereby completing the fixed connection of the upper composite insulated precast steel-concrete shear wall panel.

Images