Purline sliding connection joint for integrated construction of metal roof and construction method

Abstract

The invention discloses a purline sliding connection joint for metal roof integrated construction and a construction method.The joint comprises a first purline, a second purline and a steel jacket core, the steel jacket core is inserted to the two sides of the inner wall of the first purline and the two sides of the inner wall of the second purline, and a plurality of long round holes are formed in the end of the steel jacket core; and a connecting bolt which is temporarily fixed with the second purline is arranged in the oblong hole. The main purlins are connected through the steel sleeve core and the insertion core, temporary connection in the integrated construction process is achieved, meanwhile, the effect of releasing internal force is achieved, a connection joint which is temporarily fixed during construction and allows relative sliding to a certain degree is formed, and deformation of a main body steel structure is effectively adapted. After the structure is stably unloaded, final welding and fixing are conducted, the safety of the integrated construction stage of the metal roof can be guaranteed, and the stability and durability of the final structure can also be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of building steel structures, and more particularly to a purlin sliding connection node for integrated metal roof construction and a construction method. Background Art

[0002] With the continuous improvement of the construction industry's requirements for efficient construction technology and quality, the integrated metal roof construction technology came into being. By highly integrating the installation process of steel structure components and metal roofs, the metal roofs are installed synchronously during the ground assembly stage, and then the roof system can be put in place with the integrated construction of the steel structure, effectively avoiding the complexity and risks of high-altitude decentralized installation. However, due to the poor ability of the upper main purlin welding nodes of the integrated construction to adapt to structural deformation, stress concentration is easily generated at the nodes, resulting in loose purlin connections and leakage. In severe cases, the roof panel structure is deformed or even damaged, affecting the safety and durability of the roof system.

[0003] CN205116413U discloses a tent structure, which specifically discloses (see paragraph

[0030] of its specification, Figure 1-Figure 2 ): Specifically, the first oblique beam 102 and the second oblique beam 103 each include two hollow oblique beams and a sleeve connecting the two hollow oblique beams. In the tent structure disclosed therein, although the connection method of the oblique beams is involved, the technical problem solved by setting the sleeves in the two oblique beams is to achieve the detachable connection and size adjustment of the tent. In addition, the steel set is opened with an ordinary circular hole, so that the steel set does not have the function of releasing the internal force of the node.

[0004] Therefore, developing an innovative node structure and supporting construction method to effectively control the purlin deformation problem during integrated construction has become a technical key that needs to be solved urgently.

[0005] In view of this, this application is made. Summary of the invention

[0006] The invention provides a purlin sliding connection node for metal roof integrated construction and a construction method, which solves the shortcomings of the existing metal roof integrated construction technology.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a purlin sliding connection node for integrated construction of metal roof, comprising a first purlin, a second purlin and a steel sleeve core, the steel sleeve core is inserted into both sides of the inner wall of the first purlin and the second purlin, and a plurality of oblong holes are arranged at the ends of the steel sleeve core, and connecting bolts for temporary fixing with the second purlin are arranged in the oblong holes.

[0008] A plurality of oblong holes are arranged on both sides of the end of the steel sleeve core, and the steel sleeve core is inserted into the inner walls of the first purlin and the second purlin to achieve temporary connection in the integrated construction process, while releasing the internal force, and then fixed after the main structure construction is completed. The total gap between the steel sleeve core and the inner walls of the first purlin and the second purlin is 4mm. No welding is done during the integrated construction process, and welding is done after the unloading deformation stress is eliminated. The fracture position of the steel sleeve core and the second purlin is temporarily fixed by bolts passing through the oblong holes, and the connecting bolts are tightened after unloading to adapt to the deformation of the main steel structure.

[0009] Furthermore, the first purlin and the second purlin are connected with purlin supports and fixed by welding.

[0010] Furthermore, the first purlin and the second purlin are continuous purlins, and the cross-section is a rectangular tube cross-section.

[0011] Furthermore, the connecting bolts are 5.6 grade ordinary galvanized bolts.

[0012] The construction method of the purlin sliding connection node for the integrated construction of the metal roof comprises the following steps: Step 1: During ground assembly, insert the steel sleeve core into both sides of the inner wall of the first purlin and the second purlin. The steel sleeve core is not welded during the integrated construction process; Step 2: Use connecting bolts to pass through the oblong holes to temporarily fix the steel sleeve core and the second purlin break position to complete the ground installation of the purlin structure; Step 3: Integrate the purlin structure installed on the ground with the main structure; Step 4: After the integrated construction is in place, tighten the bolts after the overall structure is unloaded, and then weld the steel sleeve core to the first purlin. The use of bolts is completed in two stages. During the integrated construction, do not fully tighten the bolts. Wait until the integrated construction is in place and the overall structure is unloaded before tightening the bolts.

[0013] In summary, the present invention achieves temporary connection in the integrated construction process by using steel sleeve core-insertion connection between the main purlins, while releasing the effect of internal force, forming a connection node that is temporarily fixed during construction but allows a certain degree of relative sliding, effectively adapting to the deformation of the main steel structure. After the structure is unloaded and stabilized, the final welding fixation is performed, which can not only ensure the safety of the integrated construction stage of the metal roof, but also ensure the stability and durability of the final structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of a purlin sliding connection node used for metal roof integrated construction according to the present invention; Figure 2 The present invention is a top view of a purlin sliding connection node used for integrated metal roof construction.

[0015] Marking instructions: 1. First purlin; 2. Second purlin; 3. Purlin support; 4. Steel core; 5. Connecting bolt; 6. Oblong hole. DETAILED DESCRIPTION

[0016] The following is combined with Figure 1 to Figure 2 The specific implementation manner of a purlin sliding connection node and a construction method for integrated metal roof construction of the present invention is further described in detail.

[0017] A purlin sliding connection node and construction method for integrated construction of metal roofs, comprising a first purlin 1, a second purlin 2, a purlin support 3, a steel sleeve core 4, and a connecting bolt 5. A plurality of oblong holes 6 are arranged on both sides of the end of the steel sleeve core 4, and the steel sleeve core 4 is inserted into the inner walls of the first purlin 1 and the second purlin 2 to achieve temporary connection during the integrated construction process, while releasing the effect of the internal force, and then welding and fixing after the main structure construction is completed. The total gap between the steel sleeve core 4 and the inner walls of the first purlin 1 and the second purlin 2 is 4 mm, and welding is not temporarily performed during the integrated construction process. After the unloading deformation stress is eliminated, welding is performed to form a transition of continuous purlins. Bolts 5 are used to temporarily fix the steel sleeve core 4 and the second purlin 2 through the oblong holes, and the bolts 5 are tightened after unloading to adapt to the deformation of the main steel structure. The connecting bolts 5 are 5.6-grade ordinary galvanized bolts. The first purlin 1 and the second purlin 2 are continuous purlins with a rectangular tube cross-section. In the integrated construction, the first purlin 1 and the second purlin 2 are fixed to the purlin support 3 by welding.

[0018] The first purlin and the second purlin of the present application belong to the purlin system of the metal roof. The purlin is located above the main structural beam-column system, and its main function is to support the roof and ensure the structural stability and deformation adaptability of the roof.

[0019] The technical problem solved by setting up the steel sleeve core in this application is not for detachable connection and size adjustment, but to achieve temporary connection and release the internal force of the node through this special steel sleeve core with oblong holes and purlins (this application emphasizes that several oblong holes are set at the end of the steel sleeve core), which solves the problem of loose purlin connection caused by stress concentration at the nodes in the field of integrated construction.

[0020] This application tightens the bolts after the overall structure is unloaded, and then welds the steel sleeve core to the first purlin. Compared with conventional welding technology, it has the following differences: Different welding timing: It is common knowledge to achieve a fixed connection between two metal products by welding, but the difference of this application lies in the specific timing of welding during the construction process. Generally, welding is carried out directly during integrated construction and then the overall structure is unloaded. This application emphasizes that the steel sleeve core is not welded during the integrated construction, but needs to wait until the integrated construction is in place and the overall structure is unloaded before it can be welded and fixed.

[0021] Special welding purpose: This application is not only a simple fixed connection problem, but also achieves the special effect of firmly connecting the steel sleeve core and the first purlin while releasing the node stress by combining the reasonable welding timing selection in the integrated construction process.

[0022] A construction method for a purlin sliding connection node for integrated metal roof construction mainly comprises the following steps: Step 1: During ground assembly, the steel core sleeve 4 is inserted into both sides of the inner walls of the first purlin 1 and the second purlin 2. During the integrated construction process, the steel core sleeve 4 is not welded temporarily.

[0023] Step 2: Use connecting bolts 5 to pass through the oblong holes 6 to temporarily fix the steel sleeve core 4 and the second purlin 2 at the break position, completing the ground installation of the purlin structure.

[0024] Step 3: Integrate the purlin structure installed on the ground with the main structure.

[0025] Step 4: After the integrated construction is in place, tighten the connecting bolts 5 after the overall structure is unloaded, and then weld the steel core 4 to the first purlin 1. The use of bolts is completed in two stages. During the integrated construction, do not fully tighten the bolts until the integrated construction is in place and the overall structure is unloaded.

[0026] 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 construction method for a purlin sliding connection node for integrated metal roof construction, characterized in that: The steps include: Step 1: During ground assembly, insert the steel sleeve core into both sides of the inner wall of the first purlin and the second purlin. The steel sleeve core is not welded during the integrated construction process; Step 2: Use connecting bolts to pass through the oblong holes to temporarily fix the steel sleeve core and the second purlin break position to complete the ground installation of the purlin structure; Step 3: Integrate the purlin structure installed on the ground with the main structure; Step 4: After the integrated construction is in place, tighten the bolts after the overall structure is unloaded, and then weld the steel sleeve core to the first purlin. The use of bolts is completed in two stages. During the integrated construction, do not fully tighten the bolts. Wait until the integrated construction is in place and the overall structure is unloaded before tightening the bolts.

2. A purlin sliding connection node for metal roof integrated construction, characterized in that: It includes a first purlin, a second purlin and a steel core sleeve. The steel core sleeve is inserted into the inner walls of the first purlin and the second purlin, and a gap is reserved on both sides of the inner walls of the first purlin and the second purlin. A plurality of oblong holes are arranged at the ends of the steel core sleeve, and connecting bolts for temporary fixing with the second purlin are arranged in the oblong holes.

3. The purlin sliding connection node for metal roof integrated construction according to claim 2, characterized in that: The first purlin and the second purlin are connected with purlin supports and fixed by welding.

4. The purlin sliding connection node for metal roof integrated construction according to claim 2, characterized in that: The first purlin and the second purlin are continuous purlins, and the cross section is a rectangular tube cross section.

5. The purlin sliding connection node for metal roof integrated construction according to claim 2, characterized in that: The connecting bolts are 5.6 grade ordinary galvanized bolts.

Images