CN-121976639-A - Metal roof plate structure based on laser welding and wind resistance calculation method

Abstract

The invention relates to the field of buildings, in particular to a metal roof plate structure based on laser welding and a wind resistance calculation method, wherein roof plates are arranged on purlines at intervals in a straight line, two adjacent groups of roof plates are connected and fixed with the purlines through connecting supports, each connecting support comprises a support straight section which is vertically arranged with the purlines as a structural main body, support lock catch sections are arranged on the end faces of the adjacent purlines of the support straight sections, the support lock catch sections are locked and fixed with the purlines, support bending sections are arranged on the end faces, far away from the purlines, of the support straight sections at intervals along the length direction of the support straight sections, the bending directions of the adjacent support bending sections are opposite, and the support bending sections are matched with the support straight sections to form a reverse hook shape. The invention can effectively fix the metal roof board and obviously improve the integral wind resistance of the roof board system.

Inventors

• WANG JINGFENG
• MA ZHIHAO
• LIU YONG
• CHEN JINGWEI
• SUN YIXUAN
• SHEN CHEN
• ZHANG LING
• Cao Chenjian
• SUN YANPING

Assignees

• 合肥工业大学

Dates

Publication Date

20260505

Application Date

20260402

Claims (9)

1. 1. The metal roof plate structure based on laser welding is characterized in that roof plates (2) are arranged on purlines (1) at intervals in a straight line, and two adjacent groups of roof plates (2) are fixedly connected with the purlines (1) through connecting supports (3); The connecting support (3) comprises a support straight section (31) which is taken as a structural main body and is vertically arranged with the purline (1), wherein a support lock catch section (32) is arranged at the end face of the support straight section (31) adjacent to the purline (1), the support lock catch section (32) is configured to be locked and fixed with the purline (1), support bending sections (33) are arranged at intervals on the end face of the support straight section (31) far away from the purline (1) along the length direction of the support straight section (31), the bending directions of the adjacent support bending sections (33) are opposite, and the support bending sections (33) are matched with the support straight section (31) to form a reverse hook shape; The butt joint ends of two adjacent groups of roof plates (2) are bent to sequentially form a roof plate clamping section (21), a roof plate bending section (22) and a roof plate edge folding section (23), the two adjacent groups of roof plate clamping sections (21) clamp and fix a support straight section (31) connected with a support (3), the roof plate bending section (22) and the support bending section (33) are matched in bending shape to support the corresponding support bending section (33), and the roof plate edge folding sections (23) of the two adjacent groups of roof plates (2) are folded to be folded; the initial folding end of the roof board edge folding section (23) is used as a first welding node (5), one end of each adjacent purline (1) of two adjacent groups of roof board clamping sections (21) is used as a second welding node (6), and the first welding node (5) and the second welding node (6) are continuously or discontinuously welded.
2. 2. The metal roof plate structure based on laser welding according to claim 1, wherein a base (11) corresponding to the position of the connecting support (3) is arranged on the purline (1), the base (11) is fixed on the purline (1) through a locking screw (13), the base (11) is bent integrally to form a base locking section (12), and the base locking section (12) and the support locking section (32) are locked and positioned in a clamping hook mode.
3. 3. A metal roofing board structure based on laser welding according to claim 1, characterized in that it further comprises a welding device (4) running along the length direction of the roofing board (2), at least two groups of laser sources (41) with adjustable positions are arranged on the welding device (4), the two laser sources (41) respectively correspond to the positions of the corresponding welding nodes on the two groups of roofing boards (2), and the welding nodes are welded by laser while running along the roofing board (2).
4. 4. The metal roofing board structure based on laser welding according to claim 1, wherein the best welding parameters of different welding nodes are determined by evaluating the weld quality under different combinations of welding power, welding speed and defocus through an orthogonal test method.
5. 5. The metal roof plate structure based on laser welding according to claim 4, wherein the thickness of the roof plate (2) is 0.3mm, the welding power is 1800w, the welding speed is 2.7 m/min-3 m/min, and the defocus amount is 0 when the first welding node (5) is subjected to welding operation.
6. 6. The metal roof plate structure based on laser welding according to claim 5, wherein the first welding node (5) is welded and fixed continuously, and the initial folding end of the roof plate edge folding section (23) at the first welding node (5) is welded and fixed continuously.
7. 7. The metal roof plate structure based on laser welding according to claim 5, characterized in that the thickness of the roof plate (2) is 0.3mm, the welding power is 1500w, the welding speed is 1.2m/min, and the defocus amount is 0 when the second welding node (6) is subjected to welding operation.
8. 8. The metal roof plate structure based on laser welding according to claim 7, wherein the second welding node (6) is fixed by intermittent welding, and adjacent roof plate clamping sections (21) at the second welding node (6) are connected and fixed with the support straight sections (31) after welding.
9. 9. The method for calculating wind resistance of a metal roof plate structure based on laser welding according to any one of claims 1 to 7, wherein the wind resistance of the roof plate is P: Wherein b is the width of the roof panel (2); t is the thickness of the roof board (2); l is the arrangement interval of the connecting support (3) along the length direction of the roof board (2); w is the length of the connecting support (3).

Description

Metal roof plate structure based on laser welding and wind resistance calculation method Technical Field The invention relates to the field of buildings, in particular to a metal roof plate structure based on laser welding and a wind resistance calculation method. Background The vertical overlock metal roof board is widely applied to modern large-span space structures and marked buildings due to the excellent drainage performance, light weight, high strength and attractive visual effect. Traditional vertical serging metal roofing systems are typically connected by mechanical serging, i.e., mechanically engaging adjacent panel ribs with a special tool, and securing and waterproofing are achieved by friction and mechanical interlocking between the panel ribs. However, with the complexity of building modeling and the improvement of structural safety requirements, the traditional mechanical serging roof board system has the defects that firstly, the connection strength provided by mechanical engagement is relatively limited, the connection strength is not completely fixedly connected, under the action of extreme wind loads such as strong wind and typhoon, the connection node of the roof board is extremely easy to release and fail, the roof board is lifted off integrally to cause serious economic loss and potential safety hazard, secondly, the tightness of mechanical serging depends on the tightness degree of engagement, sealing failure is easy to occur after long-term use or temperature deformation, leakage is caused, and furthermore, the field mechanical serging construction efficiency is lower, the serging quality is greatly influenced by human factors, the quality control difficulty is high, and the connection strength at the node after connection is often insufficient. Therefore, how to effectively fix the existing metal roof board and improve the overall wind resistance of the roof board system becomes a technical problem to be solved. Disclosure of Invention In order to avoid and overcome the technical problems in the prior art, the invention provides a metal roof plate structure based on laser welding and a wind resistance calculation method. The invention can effectively fix the metal roof board and obviously improve the integral wind resistance of the roof board system. In order to achieve the above purpose, the present invention provides the following technical solutions: the metal roof plate structure based on laser welding comprises roof plates which are linearly arranged at intervals on purlines, and two adjacent groups of roof plates are fixedly connected with the purlines through connecting supports; the connecting support comprises support straight sections which are vertically arranged as a structural main body and purlines, wherein support lock catch sections are arranged on the end surfaces of the purlines adjacent to the support straight sections, and are locked and fixed with the purlines; the butt joint ends of two adjacent groups of roof boards are bent to sequentially form a roof board clamping section, a roof board bending section and a roof board edge folding section, wherein the two adjacent groups of roof board clamping sections clamp and fix the support straight section of the connecting support, the roof board bending section is matched with the bending shape of the support bending section to support the corresponding support bending section, and the roof board edge folding sections of the two adjacent groups of roof boards are folded to be folded to form edges; and the initial folding end of the roof board edge folding section is used as a first welding node, one end of the adjacent purlines of the adjacent two groups of roof board clamping sections is used as a second welding node, and the first welding node and the second welding node are continuously or discontinuously welded. As a further scheme of the invention, a base corresponding to the position of the connecting support is arranged on the purline, the base is fixed on the purline through a locking screw, the base is integrally bent to form a base locking section, and the base locking section is locked and positioned with the support locking Duan Kagou. The invention further provides a welding device running along the length direction of the roof board, wherein at least two groups of laser sources with adjustable positions are arranged on the welding device, the two laser sources respectively correspond to the positions of corresponding welding nodes on the two groups of roof boards, and the welding nodes are welded by laser while running along the roof board. As a still further proposal of the invention, the welding quality under the combination of different welding powers, welding speeds and defocusing amounts is evaluated by an orthogonal test method to determine the optimal welding parameters of different welding nodes. As a still further proposal of the invention, the thickness of the roof board is 0.3mm, the welding