风载对高层建筑外保温的破坏分析及加固改进

（1.南宁职业技术学院，广西 南宁  530003；2.黄石市城乡建设委员会，湖北 黄石  435000）

 

    摘要：针对目前大风荷载造成的高层建筑外墙外保温脱落问题进行研究，对外保温系统的安全性、风压对保温板破坏的影响因素等进行分析，找出破坏的深层次原因，总结保温板的破坏机理与规律，并提出抗风载较好的3种外保温构造以及对负风压较强的边角部位进行优化改进以减少风压的破坏。结果表明，在负风压区使用满粘粘结及对小区建筑群采用错落式综合布局可以降低风载对保温板的破坏，从材料的兼容性、结构刚度等方面采取措施可有效提高系统的牢固性。

    关键词：风荷载；高层建筑；负风压；破坏机理；外保温构造 

    中图分类号：TU111.4+8        文献标识码：A        文章编号：1001-702X（2018）08-0130-05

 

Failure analysis and reinforcement improvement of wind load to high-rise building exterior insulation 

HU Bo1，GAO Yanwei2，LIANG Zhu1

 （1.Nanning College for Vocational Technology，Nanning 530003，China； 

2.Huangshi Urban and Rural Construction Commission，Huangshi 435000，China）

    Abstract：Conducted research on high-rise buildings exterior insulation shedding problems caused by big wind load，analyzed the security of external insulation system and failure factors of wind pressure to the insulation board，to find out the deep-seated reasons of damage. Summarized the damage mechanism and laws of insulation board，and correspondingly proposed three external thermal insulation structures with better wind load resist performance and the site optimization improvements on the edges and corners with strong negative pressure to reduce damage of wind pressure. The results show that using full-sticky knot in the negative pressure zone and adopting a comprehensive formula scattered layout in residential buildings can reduce the damage of wind load to insulation board，take measures from material compatible and structural rigidity can effectively improve the robustness of the system. 

    Key words：wind load，high-rise building，negative wind pressure，failure mechanism，external insulation construction