High-performance large-span metal bottom plate support reinforcing joint and construction method thereof

Abstract

The invention discloses a high-performance large-span metal bottom plate support reinforcing node and a construction method thereof, the node comprises a purline, a metal bottom plate is arranged on the purline, a reinforcing cover plate is arranged above the position, corresponding to the purline, of the metal bottom plate, and fastening devices are arranged among the purline, the metal bottom plate and the reinforcing cover plate. For a large-span metal roof bottom plate, large stress can be generated at the position of a support, and local buckling instability is prone to occurring at the position of the support. The reinforcing cover plate covers the support of the metal bottom plate, the roof bottom plate at the support is thickened to a certain degree, the skin effect can be achieved, the out-of-plane rigidity of the bottom plate at the support is effectively improved, local buckling instability of the bottom plate at the support is avoided, and the stability and safety of the roof bottom plate can be greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of building steel structures and metal roofs, and in particular to a high-performance large-span metal bottom plate support reinforcement node and a construction method thereof. Background Art

[0002] With the continuous improvement of the construction industry's requirements for efficient construction technology and quality, the construction efficiency of metal roofs has also been further developed, and the application of large-span metal base plates has also increased. Large-span metal base plates have strong spanning capabilities, which simplifies the roof structure, greatly reduces the number of components, and can be used as a construction platform for installation and construction. This series of advantages greatly improves the efficiency of roof construction. However, due to the large span and large load area of ​​large-span metal base plates, the stress of the base plate at the support is large and there is stress concentration. It is easy to cause local buckling instability before the support, resulting in poor stability and safety of the roof base plate structure. Therefore, the development of an innovative node structure and supporting construction method to effectively improve the stability and safety of large-span metal base plates has become a technical key that needs to be solved urgently. In view of this, this application is made. Summary of the invention

[0003] The present invention provides a high-performance large-span metal base plate support reinforcement node and a construction method thereof, which solves the problem that the large-span metal base plate supports of existing metal roofs are prone to instability, and significantly improves the stability and safety of the metal base plate.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a high-performance large-span metal base plate support reinforcement node, including a purlin, a metal base plate is arranged on the purlin, a reinforcing cover plate is arranged above the metal base plate corresponding to the purlin, and a fastening device is arranged between the purlin, the metal base plate and the reinforcing cover plate.

[0005] Furthermore, the reinforced cover plate is consistent with the metal bottom plate in shape and is arranged at the purlin support.

[0006] Furthermore, the reinforced cover plate protrudes from the purlin support in the width direction, and the protruding width is determined according to the actual specific plate type specifications. Furthermore, an adhesive is applied between the reinforcement cover plate and the metal bottom plate to ensure a tight connection.

[0007] Furthermore, the fastening device uses self-tapping screws for connection and fixing.

[0008] Furthermore, the metal base plate is a high-performance base plate, and the material is a high-strength steel higher than S300.

[0009] Furthermore, the metal bottom plate is a large-wave high-pressure steel plate with a wave height greater than 70 mm.

[0010] The construction method of the high-performance large-span metal base plate support reinforcement node comprises the following steps: 1) Lay the metal base plate above the purlins; 2) Apply adhesive to the bottom surface of the reinforcement cover plate, and cover and buckle the reinforcement cover plate on the metal bottom plate at the support; 3) After the cover plate is fastened, use self-tapping screws to connect the metal base plate, reinforced cover plate, and purlins at the support.

[0011] To sum up, the present invention covers the metal base plate support with a reinforcing cover plate, thickens the metal base plate at the support to a certain extent, and applies a certain anchoring force through self-tapping screws, thereby playing a skinning role and enhancing the out-of-plane stiffness of the base plate, thereby avoiding local buckling instability at the support first, and can greatly improve the stability and safety of the metal base plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an axonometric diagram of the reinforcement node of the high-performance large-span metal base plate support of the present invention; Figure 2 This is a front view of a reinforcement node of a high-performance large-span metal base plate support of the present invention; Figure 3 This is a side view of the reinforcement node of the high-performance large-span metal bottom plate support of the present invention (case 1: the metal bottom plate at the support is continuous); Figure 4 This is a side view of the reinforcement node of the high-performance large-span metal bottom plate support of the present invention (case 2: the metal bottom plate at the support is discontinuous); Figure 5 This is a side view of the reinforcement node of the high-performance large-span metal base plate support according to an embodiment of the present invention (Case 3: the support at the outermost span).

[0013] Marking instructions: 1. Purlin; 2. Metal base plate; 3. Reinforced cover plate; 4. Self-tapping screws. DETAILED DESCRIPTION

[0014] The following is combined with Figures 1 to 5 The specific implementation methods of a high-performance large-span metal base plate support reinforcement node and a construction method thereof of the present invention are further described in detail.

[0015] A high-performance large-span metal base plate 2 support reinforcement node comprises a purlin 1, a metal base plate 2 is arranged on the purlin 1, a reinforcement cover plate 3 is arranged above the metal base plate 2 corresponding to the purlin 1, and a fastening device is arranged between the purlin 1, the metal base plate 2 and the reinforcement cover plate 3.

[0016] Preferably, in this embodiment, the reinforcing cover plate 3 has the same plate shape as the metal bottom plate 2 and is arranged at the support of the purlin 1 .

[0017] Preferably, in this embodiment, the reinforced cover plate protrudes beyond the purlin in the width direction, and the protruding width is determined according to the actual specific plate type specifications.

[0018] In this embodiment, preferably, an adhesive is applied between the reinforcing cover plate 3 and the metal bottom plate 2 to ensure a tight connection.

[0019] Preferably, in this embodiment, the fastening device uses self-tapping screws 4 for connection and fixing.

[0020] In this embodiment, the metal base plate 2 is preferably a high-performance base plate, and the material is a high-strength steel higher than S300.

[0021] In this embodiment, preferably, the metal bottom plate 2 is a large-wave high-pressure steel plate with a wave height greater than 70 mm.

[0022] Specific embodiment: A high-performance large-span metal base support reinforcement section includes a purlin 1, a metal base 2, a reinforcing cover plate 3, and self-tapping screws 4. The metal base 1 is a high-performance base, made of S300 high-strength steel, and the plate type is a corrugated steel plate with a wave height of 113. The reinforcing cover plate 3 is consistent with the plate type of the metal base 1, and is arranged at the support of the purlin 1, and the width protrudes 110mm from the purlin range. An adhesive is applied between the reinforcing cover plate 3 and the metal base 1 to ensure a tight connection. The purlin 1, the metal base 2, and the reinforcing cover plate 3 are connected and fixed by self-tapping screws 4.

[0023] The construction method of the high-performance large-span metal base plate support reinforcement node comprises the following steps: 1) Lay the metal base plate 2 on the purlin 1.

[0024] 2) Apply adhesive 4 to the bottom surface of the reinforcing cover plate 3, and cover and snap the reinforcing cover plate 3 onto the metal bottom plate 2 at the support.

[0025] 3) After the reinforcing cover plate 3 is fastened, the metal base plate 2, the reinforcing cover plate 3 and the purlin 1 are connected at the support with self-tapping screws 4.

[0026] A high-performance large-span metal base plate support reinforcement node can be mainly divided into three situations: situation one: the metal base plate 2 at the support is continuous; situation two: the metal base plate 2 at the support is discontinuous; situation three: the support at the side span.

[0027] Figure 3 In the first case shown, the metal bottom plate 2 is a continuous plate at the support, and the reinforcing cover plate 3 protrudes 110mm on both sides of the purlin. Adhesive is applied between the reinforcing cover plate 3 and the metal bottom plate 1 to ensure a tight connection. The purlin 1, the metal bottom plate 2, and the reinforcing cover plate 3 are connected and fixed by self-tapping screws 4.

[0028] Figure 4 In the second case shown, the metal bottom plate 2 is discontinuous at the support and is composed of two plates. The upper metal bottom plate 2 protrudes 110mm on one side of the purlin, and the lower metal bottom plate 2 protrudes 110mm on the other side of the purlin. Adhesive is applied between the upper metal bottom plate 2 and the lower metal bottom plate 2 to ensure tight bonding. The purlin 1 and the metal bottom plate 2 are connected and fixed by self-tapping screws 4.

[0029] Figure 5 In the third case shown, at the support at the side span, the metal bottom plate 2 is only laid on one side of the purlin 1, and the reinforcing cover plate 3 only protrudes 110mm from one side of the purlin. Adhesive is applied between the reinforcing cover plate 3 and the metal bottom plate 1 to ensure a tight connection. The purlin 1, the metal bottom plate 2, and the reinforcing cover plate 3 are connected and fixed by self-tapping screws 4.

[0030] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A high-performance large-span metal base plate support reinforcement node, characterized in that: It comprises purlins, a metal bottom plate is arranged on the purlins, a reinforcing cover plate is arranged above the metal bottom plate corresponding to the purlins, and a fastening device is arranged between the purlins, the metal bottom plate and the reinforcing cover plate.

2. The high-performance large-span metal base plate support reinforcement node according to claim 1 is characterized in that: The reinforced cover plate is consistent with the metal bottom plate in shape and is arranged at the purlin support.

3. The high-performance large-span metal base plate support reinforcement node according to claim 2 is characterized in that: The reinforced cover plate protrudes beyond the purlin in the width direction, and the protruding width is determined according to the actual specific plate type specifications.

4. The high-performance large-span metal base plate support reinforcement node according to claim 1 is characterized in that: An adhesive is applied between the reinforcement cover plate and the metal bottom plate to ensure a tight connection.

5. The high-performance large-span metal base plate support reinforcement node according to claim 1 is characterized in that: The fastening device is connected and fixed by self-tapping screws.

6. The high-performance large-span metal base plate support reinforcement node according to claim 1 is characterized in that: The metal base plate is a high-performance base plate, and the material is a high-strength steel higher than S300.

7. The high-performance large-span metal base plate support reinforcement node according to claim 1 is characterized in that: The metal bottom plate is a high-performance bottom plate, and the plate type is a large-wave high-pressure steel plate with a wave height greater than 70 mm.

8. The construction method of high-performance large-span metal base plate support reinforcement node according to any one of claims 1 to 7, characterized in that: The steps include: 1) Lay the metal base plate above the purlins; 2) Apply adhesive to the bottom surface of the reinforcement cover plate, and cover and buckle the reinforcement cover plate on the metal bottom plate at the support; 3) After the cover plate is fastened, use self-tapping screws to connect the metal base plate, reinforced cover plate, and purlins at the support.

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