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东南沿海低层房屋抗风研究
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摘要
我国东南沿海地区经常遭受热带气旋的影响,每次台风过后,都造成大量的房屋损坏甚至倒塌。因此深入研究低层房屋的风荷载特性,并提出有效的抗风措施,具有十分重要的现实意义。
     本文根据国内外近年来有关低层房屋风荷载的研究资料以及大量的灾后调查和试验资料,对影响低层房屋抗风性能的主要因素进行较全面的归纳和分析,揭示了低层房屋表面的风压特征随房屋几何尺寸、屋面坡度、屋面形式、屋檐构造、女儿墙等因素的变化特点,分析了低层房屋的台风侵袭特征和破坏机理。在上述分析的基础上,提出了低层房屋抗强风设计的指导性意见。同时根据东南沿海地区低层房屋现状,研究探讨既有建筑结构的鉴定和加固措施。最后结合温州地区低层房屋的典型实例,研究了既有砌体结构的加固和改造措施。
The coastal area in southeast China frequently suffers the tropical cyclone. Many buildings are damaged or broken down by typhoon. Therefore it is of great significance to investigate the wind-load distribution characteristics of such buildings and accordingly find out the corresponding wind-resistant ways.
     Based on the data of researches of the wind loads on low-rise buildings recent years and that of investigations and tests, many factors that affect the wind-resistance capability of low-rise buildings have been fully analyzed. It revealed properly the principle of the variations of the wind-load distribution characteristics, with the building geometry, roof type and slope, eave configuration, parapet and dominant opening of wall etc. This paper discusses the affected characteristics of the wind load for the low-rise buildings, and analyzes the destroyed-mechanism. On the basis of the investigations, the design method and structure measurement against typhoon for the low-rise buildings have been proposed.
     The masonry structure is widely used in southeast China. This paper discusses the checking and reinforcement methods for the existing masonry structures. Finally, with the topical example of low-rise buildings in Wenzhou area, this paper discusses the reinforcement methods for these structures.
引文
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