大跨度场馆上金属屋面系统抗风性能研究

发布时间：2018-11-04 13:30

【摘要】：金属屋面系统是一种比较流行的屋面系统,相比于厚重的混凝土屋面,因其具有自重轻、美观以及施工简便等特点,受到工程技术人员的青睐,同时伴随着全国各大体育场馆、交通站台等建筑的兴建,其得到了广泛的应用。随着金属屋面在我国大量的应用,其抗风揭性能差、防水问题突出等问题也逐渐暴露。近几年,金属屋面发生的风揭事故已不在少数,给国民的经济财产带来很大的损失,甚至危及到人民的生命安全。因此,对于金属屋面抗风揭性能的研究具有重要意义。本文采用数据搜集及统计的方法,首先对国内市场上常用的金属屋面系统进行了分类,从系统形式、连接方式以及材料这三个方面进行分类,使工程技术人员对不同种类的金属屋面系统有深入的了解,使金属屋面系统的选用更加合理化。然后,针对全国金属屋面风揭事故进行统计,归纳和总结了金属屋面风揭事故的主要原因,同时对国内相关破坏试验最终破坏位置进行了统计,最终得出金属屋面系统风揭破坏的主要原因在于面板间咬合处破坏。针对直立锁边金属屋面系统进行局部节点试验及整体风揭试验,通过进行变参数试验来分析该屋面系统承载力的影响因素;通过观察其破坏现象,找出了试件破坏“三阶段”规律,同时找到了其咬合节点处破坏的薄弱点;另外,通过局部节点试验和整体风揭试验的结果对比研究,也验证了局部节点试验的可靠性,为今后金属屋面现场节点试验提供参考。最后,针对目前金属屋面系统设计计算存在的问题,归纳总结了一套直立锁边金属屋面系统改进计算方法和加强措施,结合局部节点试验所得的直立锁边金属屋面系统承载力,进行了直立锁边金属屋面工程实例计算,保证了该屋面工程的安全性和可靠性。目前,金属屋面市场还不够完善,无论是设计计算、板材生产,还是安装施工、后期管理,都需要有相应的制度标准进行规范管理,这样才能使金属屋面系统在国内健康、良好的发展。
[Abstract]:Metal roof system is a popular roof system. Compared with thick concrete roof, it is favored by engineers and technicians because of its light weight, beautiful appearance and easy construction. The construction of traffic platform and other buildings has been widely used. With the extensive application of metal roof in our country, the problems such as poor weathering resistance and waterproofing are gradually exposed. In recent years, there are not a few accidents of metal roof exposed by wind, which bring great loss to the people's economic property and even endanger the lives of the people. Therefore, it is of great significance to study the windbreak resistance of metal roof. In this paper, the method of data collection and statistics is used to classify the metal roof system which is commonly used in the domestic market, which is classified from three aspects: system form, connection mode and material. It makes engineers have a deep understanding of different kinds of metal roof system and makes the selection of metal roof system more reasonable. Then, according to the statistics of the metal roof wind exposure accident in China, the main reasons of the metal roof wind exposure accident are summarized, and the final damage location of the domestic relevant damage test is counted. Finally, it is concluded that the main reason of the wind-stripping damage of metal roof system is the damage of the bite between the panels. For vertical lock-in metal roof system, the local joint test and the whole wind test are carried out, and the influence factors of the bearing capacity of the roof system are analyzed by variable parameter test. By observing the failure phenomenon, the rule of "three stages" of the specimen failure is found, and the weakness of the damage at the bite joint is also found. In addition, the reliability of the local joint test is verified by comparing the results of the local joint test and the whole wind stripping test, which provides a reference for the field joint test of metal roof in the future. Finally, aiming at the problems existing in the design and calculation of metal roof system at present, a set of improved calculation methods and strengthening measures for metal roof system with vertical locking edge are summarized, and the bearing capacity of metal roof system with vertical locking edge is obtained by combining with the test of local nodes. An example of vertical locking metal roof is calculated to ensure the safety and reliability of the roof. At present, the metal roof market is not perfect enough. Whether it is design and calculation, plate production, installation and construction, and later management, it is necessary to have corresponding system standards to regulate the management, so as to make the metal roof system healthy in China. Good development.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU39;TU312.1

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