Shear-resistant connecting part suitable for double-steel-plate concrete wallboard structure

Abstract

The invention relates to the technical field of civil engineering, and discloses a shear-resistant connecting part suitable for a double-steel-plate concrete wallboard structure, the shear-resistant connecting part is connected between an upper steel plate and a lower steel plate, the shear-resistant connecting part comprises a plurality of first buckle plates and a plurality of second buckle plates, the first buckle plates are positively arranged on the lower surface of the upper steel plate in a rectangular array mode, and the second buckle plates are arranged on the lower surface of the lower steel plate in a rectangular array mode. The first buckle plates are of isosceles trapezoid plate structures with upper openings, the tops of the first buckle plates are fixedly welded to the lower surface of the upper steel plate, inverted-trapezoid clamping grooves are formed between every two adjacent first buckle plates, the second buckle plates are of isosceles inverted-trapezoid plate structures with lower openings, and the second buckle plates are buckled into the clamping grooves in a one-to-one correspondence mode. The inclined face of each second buckle plate is tightly attached to the inclined faces of the two adjacent first buckle plates so as to prevent concrete slurry from entering subsequently, through holes are horizontally formed in each row of the first buckle plates and the second buckle plates which are tightly attached to each other, and the first buckle plates and the second buckle plates penetrate through the through holes one by one through locking rods extending transversely and are locked.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering, and in particular to a shear connection component suitable for a double steel plate concrete wall panel structure. Background Art

[0002] Compared with ordinary reinforced concrete shear wall panel structures, double steel plate concrete composite wall panel structures can utilize material complementarity and structural innovation to significantly inhibit crack expansion and improve the structure's lateral stiffness and overall energy absorption capacity, thereby solving the problems of poor ductility and difficult crack control in ordinary reinforced concrete shear walls. It has demonstrated irreplaceable application value in high-rise building shear walls, nuclear protection walls, immersed tubes or shield tunnels, polar offshore platforms and protection projects, and can meet safety requirements under extreme load conditions.

[0003] At present, the concrete composite wall panel structure includes inner and outer steel plates, concrete, and shear connection components connecting the steel plates and concrete, etc., which constrain the concrete through the steel plates on both sides. Among them, the shear connection components play the role of transmitting the shear force of the steel plate and concrete interface, restraining the buckling of the steel plate, improving the integrity and seismic performance, etc., which has a decisive influence on the overall stress performance of the shear wall panel structure. Once it is damaged, it will greatly weaken the integrity, bearing capacity and durability of the structure. At present, the existing shear connection components are mainly divided into many types such as stud connectors, tension bolts or tie rod connectors. Among them, the stud connectors are mainly welded to the steel plates on both sides and embedded in the internal concrete to achieve the connection between the steel plate and the concrete. The tension bolt connectors are mainly opened in the steel plate, inserted with bolts and fixed to limit the tendency of the steel plate and concrete to separate and slip from each other, resist transverse and longitudinal shear forces and improve the integrity of the structure.

[0004] However, existing shear-resistant connecting components have some defects, resulting in poor structural integrity and stability of the composite wall panels. Specifically, the tension bolts in the shear-resistant connecting components need to be drilled in the steel plate, which not only weakens the cross-section of the steel plate, resulting in a decrease in the integrity and strength performance of the structure, but also makes it difficult for the single bolt or tie bar connector to coordinate the collaborative work of the steel plate and concrete, and cannot effectively limit the separation and slippage between the two. At the same time, exposed metal components such as bolts are prone to rust in marine environments or high-humidity areas, reducing the long-term anchoring performance of the connector and the shear resistance. This makes the wall panel structure unable to cope with loads such as earthquakes, impacts and explosions in extreme environments. Summary of the Invention

[0005] The present invention provides a shear connection component suitable for a double steel plate concrete wall panel structure, which can solve the above-mentioned problems in the prior art.

[0006] The foldable plate has a plurality of first and second locking plates, each of which is connected to the bottom surface of the upper and lower plates by a plurality of threaded holes.

[0007] Preferably, the length of the locking rod is shorter than the length of the upper steel plate.

[0008] Preferably, a lock buckle is provided on the outer side of each first snap plate located at the edge. The lock buckle is a right-angled trapezoidal plate structure. The upper bottom surface of the lock buckle is open and the opening faces downward. The lower part of the lock buckle is fixedly connected to the lower steel plate. The inclined surface of the lock buckle is fitted with the outer inclined surface of the corresponding first snap plate, and the two ends of the locking rod respectively pass through the two corresponding lock buckles at the edge.

[0009] Preferably, each lock buckle is placed inside between the upper steel plate and the lower steel plate.

[0010] Preferably, the through hole passes through the lock buckle, both ends of the lock rod extend out of the lock buckles on both sides, and both ends are provided with external thread grooves for tightening the lock nut.

[0011] Preferably, there is a clearance fit between the through hole and the locking rod.

[0012] Preferably, the length of the external thread grooves at both ends of the locking rod is 1 / 15 to 2 / 15 of the total length of the locking rod.

[0013] Preferably, the first snap plate and the second snap plate are both made of Q235 steel, and the thickness of both is greater than 4 mm.

[0014] Preferably, both the upper steel plate and the lower steel plate are made of Q235 steel plates with a thickness greater than 4 mm.

[0015] Compared with the prior art, the beneficial effects of the present invention are: compared with the existing tension bolts and other methods, the structure of the present connection component does not require drilling holes in the steel plates, thereby ensuring the integrity and strength of the cross-sections of the upper and lower steel plates, and compared with single bolts or tie rod connection components, it can have synergy through the mutual restraint of the first clip plate and the second clip plate, and can effectively limit the separation and slippage of each component. At the same time, the present connection component has the performance of long-term connection and tightening. Specifically, compared with traditional connection components, the structure of the present connection component avoids the loss of integrity and original strength of the upper and lower steel plates caused by drilling holes when setting the tension bolts in the current traditional connection components through the mechanical interlocking of the first clip plate and the second clip plate and the locking through the locking rod. Moreover, the present connection component is modularly prefabricated and has excellent integrity and economy. The upper steel plate and the lower steel plate are respectively welded with multiple first clip plates and second clip plates, thereby realizing the effect of welding and fixing different areas of multiple components, avoiding the situation where stress concentration is caused by only a few fixations. Specifically, the first clip plates and the second clip plates in the same row are tightly and staggeredly fastened, and the internal transverse locking rod is passed through to further reinforce the tight connection between the first clip plates and the second clip plates, so as to realize the integral forming connection of the connecting components, and the special shape of the first clip plates and the second clip plates increases the contact area between the concrete and the first clip plates and the second clip plates after pouring the concrete, thereby effectively improving the overall strength and shear resistance of the composite wall panel. At the same time, the first clip plates, the second clip plates, the locking rod and other components in the shear connection component can be directly prefabricated in the factory, realizing modular installation and construction, speeding up the construction progress, and reducing the construction and transportation costs and difficulty.

[0016] In summary, the shear connection component is feasible in construction, has reasonable force, and can structurally meet the application strength and specification requirements of the wall panel composed of upper steel plate, lower steel plate and concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a partially exploded structure of a shear connection component applicable to a double steel plate concrete wall panel structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure from a front side of a shear connection component applicable to a double steel plate concrete wall panel structure provided by an embodiment of the present invention; Figure 3 A schematic diagram of a partial structure of a shear connection component applicable to a double steel plate concrete wall panel structure provided by an embodiment of the present invention; Figure 4 A schematic diagram of a partial structure from a front side perspective of a shear connection component applicable to a double steel plate concrete wall panel structure provided by an embodiment of the present invention; Figure 5A schematic diagram of a tilted bottom view of a partial structure of a shear connection component applicable to a double steel plate concrete wall panel structure provided by an embodiment of the present invention; Figure 6 for Figure 5 Schematic diagram of the upward-looking structure.

[0018] Description of reference numerals: 1. Upper steel plate; 2. Lower steel plate; 3. First snap plate; 31. Through hole; 4. Slot; 5. Second snap plate; 6. Lock rod; 61. External thread groove; 7. Lock buckle; 8. Lock nut. DETAILED DESCRIPTION

[0019] A specific embodiment of the present invention is described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] refer to Figure 1 and Figure 4 The present invention provides a shear connection component suitable for a double steel plate concrete wall panel structure, which is connected between the upper steel plate 1 and the lower steel plate 2, including: a plurality of first clip plates 3 and a plurality of second clip plates 5. The plurality of first clip plates 3 are arranged in a rectangular array in the positive direction on the lower surface of the upper steel plate 1. The first clip plates 3 are an isosceles trapezoidal plate structure with an upper opening. The tops of the first clip plates 3 are welded and fixed to the lower surface of the upper steel plate 1. An inverted trapezoidal slot 4 is formed between two adjacent first clip plates 3. The plurality of second clip plates 5 are all isosceles inverted trapezoidal plate structures with a lower opening, and are snapped into each slot 4 one by one. The lower part of the second clip plates 5 is welded and fixed to the upper surface of the lower steel plate 2. The inclined surface of the second clip plates 5 is tightly attached to the inclined surfaces of the two adjacent first clip plates 3 to prevent subsequent entry of concrete slurry. Each row of the first clip plates 3 and the second clip plates 5 that are tightly attached to each other are horizontally opened with a through hole 31, and are penetrated and locked one by one by a transversely extending locking rod 6.

[0022] In the above embodiment, the structure of the connection component does not require drilling holes in the steel plates compared to existing tension bolts, etc., which ensures the integrity and strength of the cross-sections of the upper steel plate 1 and the lower steel plate 2. Moreover, compared with single bolts or tie rod connection components, the mutual restraint between the first clip plate 3 and the second clip plate 5 can be coordinated, which can effectively limit the separation and slippage of each component. At the same time, the connection component has the performance of long-term connection and tightening. Specifically, compared with traditional connection components, the structure of the connection component avoids the loss of integrity and original strength of the upper steel plate 1 and the lower steel plate 2 caused by drilling holes when setting the tension bolts in the current traditional connection components, and the connection component is modular prefabricated, with excellent integrity and economy. The shear connection component is divided into the upper steel plate 1 and the lower steel plate 2 by the mechanical interlocking of the first clip plate 3 and the second clip plate 5 and the locking rod 6. By welding multiple first snap plates 3 and second snap plates 5 separately, the welding and fixing of different areas of multiple components is achieved, avoiding the situation where stress concentration is caused by only a few fixations. Specifically, the first snap plates 3 and the second snap plates 5 in the same row are tightly and staggeredly fastened, and the internal transverse locking rod 6 is passed through to further reinforce the tight connection between the first snap plates 3 and the second snap plates 5, so as to achieve an integrally formed connection of the connecting components. The special shape of the first snap plates 3 and the second snap plates 5 increases the contact area between the concrete and the first snap plates 3 and the second snap plates 5 after pouring the concrete, thereby effectively improving the overall strength and shear resistance of the composite wall panel. At the same time, the first snap plates 3, the second snap plates 5 and the locking rod 6 and other components in this shear-resistant connecting component can be directly prefabricated in the factory to achieve modular installation and construction, speed up the construction progress, and reduce the construction and transportation costs and difficulty.

[0023] In summary, the shear connection component is feasible in construction, has reasonable force, and can structurally meet the application strength and specification requirements of the wall panel composed of the upper steel plate 1, the lower steel plate 2 and the concrete.

[0024] Further, refer to Figure 1 、 Figure 2 and Figure 4 , the length of the locking rod 6 is less than the length of the upper steel plate 1.

[0025] In the above embodiment, it can be ensured that the locking rod 6, each first snap plate 3 and the second snap plate 5 are all placed inside between the upper steel plate 1 and the lower steel plate 2, and can be wrapped after the subsequent concrete pouring.

[0026] Further, refer to Figure 3 、 Figure 4 and Figure 5A lock buckle 7 is provided on the outside of each first snap plate 3 located at the edge. The lock buckle 7 is a right-angled trapezoidal plate structure. The upper bottom surface of the lock buckle 7 is open and the opening is facing downward. The lower part of the lock buckle 7 is fixedly connected to the lower steel plate 2. The inclined surface of the lock buckle 7 is in contact with the outer inclined surface of the corresponding first snap plate 3. The two ends of the locking rod 6 respectively pass through the two corresponding lock buckles 7 at the edge. The through hole 31 passes through the lock buckle 7. The two ends of the locking rod 6 extend out of the lock buckles 7 on both sides, and both ends are provided with external thread grooves 61 for tightening the locking nut 8.

[0027] In the above embodiment, the lock buckle 7 is provided to facilitate the locking of the locking rod 6. Specifically, the lock buckle 7 is an inverted right-angled trapezoidal structure. After its inclined surface is aligned and fitted with the inclined surface of the adjacent second snap plate 5, the other waist plate will be in a vertical state. At this time, after the locking rod 6 is horizontally penetrated and the locking nut 8 locks the locking rod 6, the inner end face of the locking nut 8 will be pressed against the vertical outer plate wall of the lock buckle 7, thereby ensuring the locking degree between the various connecting components and further improving the stability. The center lines of the through holes 31 opened in each row of the first snap plate 3, the second snap plate 5 and the lock buckle 7 are collinear, and the provided external thread groove 61 is used for spiral tightening of the locking nut 8.

[0028] Further, refer to Figure 1 and Figure 6 Each lock buckle 7 is placed inside between the upper steel plate 1 and the lower steel plate 2.

[0029] In the above embodiment, it is possible to prevent the lock buckle 7, the first snap plate 3 and the second snap plate 5 from being exposed outside the upper steel plate 1 or the lower steel plate 2, resulting in incomplete coverage by concrete.

[0030] Further, refer to Figure 1 , there is a clearance fit between the through hole 31 and the locking rod 6.

[0031] In the above embodiment, it is possible to avoid the situation where the laterally extending locking rod 6 cannot pass through each through hole 31 to be locked, resulting in the inability to complete the construction and installation of the shear connection component. At the same time, by reserving a gap, it is possible to cope with the stress expansion after stress concentration, which is similar to the principle of the expansion joint of a bridge.

[0032] Further, refer to Figure 4 The length of the external thread grooves 61 at both ends of the locking rod 6 is 1 / 15 to 2 / 15 of the total length of the locking rod 6.

[0033] In the above embodiment, by limiting the length of the external thread grooves 61 at both ends of the locking rod 6 to 1 / 15 to 2 / 15 of the total length of the locking rod 6 , it is possible to ensure that the locking rod 6 can be locked during the subsequent fixing process.

[0034] Further, refer to Figure 1The first snap plate 3 and the second snap plate 5 are both made of Q235 steel, and the thickness of both is greater than 4 mm.

[0035] In the above embodiments, the overall shear resistance of the composite wall panel can be effectively improved, thereby enhancing the coordinated working ability of the various components of the structure and avoiding premature failure of the shear connection components.

[0036] At the same time, the locking rod 6 adopts a bolt rod with a performance grade of 4.8 and a diameter greater than 12 mm.

[0037] Further, refer to Figure 1 The upper steel plate 1 and the lower steel plate 2 are both made of Q235 steel plates with a thickness greater than 4 mm.

[0038] In the above embodiments, the overall structural failure caused by insufficient strength or thickness of the upper steel plate 1 and the lower steel plate 2 can be avoided, and the effective embedding of the shear connection components and the effective improvement of the shear performance of the structure can be achieved.

[0039] Furthermore, after completing the installation of various components, temporary steel formwork is spot welded on the three sides of the wall panel structure to fix the wall panel structure, and the remaining side is used for pouring concrete. The wall panel structure is then stood on its side to ensure that the sides of the concrete are flush with the upper steel plate 1 and the lower steel plate 2, and concrete is poured from top to bottom. To facilitate the removal of the steel formwork, lubricating oil is applied to the inner surface of the formwork before pouring concrete to facilitate the removal of the formwork and prevent the concrete on the surface of the specimen from being damaged when the formwork is removed. Finally, it is smoothed and watered for maintenance.

[0040] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A shear connection component suitable for a double steel plate concrete wall panel structure, connected between an upper steel plate (1) and a lower steel plate (2), characterized in that: include: A plurality of first snap plates (3) are arranged in a rectangular array on the lower surface of the upper steel plate (1), the first snap plates (3) being an isosceles trapezoidal plate structure with an upper opening, the tops of the first snap plates (3) being welded and fixed to the lower surface of the upper steel plate (1), and an inverted trapezoidal slot (4) being formed between two adjacent first snap plates (3); A plurality of second snap plates (5) are each in the form of an isosceles inverted trapezoidal plate structure with a lower opening, and are snapped into each of the slots (4) one by one. The lower portion of the second snap plates (5) is welded and fixed to the upper surface of the lower steel plate (2). The inclined surface of the second snap plates (5) is in close contact with the inclined surfaces of the two adjacent first snap plates (3) to prevent subsequent entry of concrete slurry. Each row of first snap plates (3) and second snap plates (5) that are in close contact with each other are horizontally provided with through holes (31), and are penetrated and locked one by one by a transversely extending locking rod (6).

2. A shear connection component suitable for a double steel plate concrete wall panel structure according to claim 1, characterized in that: The length of the locking rod (6) is smaller than the length of the upper steel plate (1).

3. The shear connection component suitable for a double steel plate concrete wall panel structure according to claim 2, characterized in that: A lock buckle (7) is provided on the outer side of each of the first snap plates (3) located at the edge. The lock buckle (7) is a right-angled trapezoidal plate structure. The upper bottom surface of the lock buckle (7) is open and the opening faces downward. The lower part of the lock buckle (7) is fixedly connected to the lower steel plate (2). The inclined surface of the lock buckle (7) fits with the outer inclined surface of the corresponding first snap plate (3). The two ends of the locking rod (6) respectively pass through the two corresponding lock buckles (7) at the edge.

4. The shear connection component suitable for a double steel plate concrete wall panel structure according to claim 3, characterized in that: Each of the lock buckles (7) is placed inside between the upper steel plate (1) and the lower steel plate (2).

5. The shear connection component suitable for a double steel plate concrete wall panel structure according to claim 3, characterized in that: The through hole (31) passes through the lock buckle (7), and both ends of the lock rod (6) extend out of the lock buckles (7) on both sides, and both ends are provided with external thread grooves (61) for fastening the locking nut (8).

6. The shear connection component suitable for a double steel plate concrete wall panel structure according to claim 5, characterized in that: There is a clearance fit between the through hole (31) and the locking rod (6).

7. The shear connection component suitable for a double steel plate concrete wall panel structure according to claim 5, characterized in that: The length of the external thread grooves (61) at both ends of the locking rod (6) is 1 / 15 to 2 / 15 of the total length of the locking rod (6).

8. The shear connection component suitable for a double steel plate concrete wall panel structure according to claim 1, characterized in that: The first snap plate (3) and the second snap plate (5) are both made of Q235 steel, and both have a thickness greater than 4 mm.

9. The shear connection component suitable for a double steel plate concrete wall panel structure according to claim 1, characterized in that: The upper steel plate (1) and the lower steel plate (2) are both made of Q235 steel plates with a thickness greater than 4 mm.

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