高烈度地震设防区高铁站房消能减震设计研究

Application research of energy-dissipated technology in a high-speed railway station building in high seismic intensity region

随着中国高铁建设的迅速发展,中国铁路技术水平逐渐走在世界前列。国内高铁站房多为大跨度空间结构,侧向刚度较弱。传统的抗震设计方法会导致构件截面过大,影响建筑使用功能、美观性和经济性,在高烈度地震设防区该问题尤为突出。本文以某位于高烈度地震设防区的高铁站房为工程背景,提出了屈曲约束支撑与黏滞阻尼墙联合控制的减震技术方案,对结构进行了多遇及罕遇地震作用分析与优化设计。研究结果表明,采用该联合减震方案可达到多遇地震作用下控制结构变形,罕遇地震作用下减少结构损伤的显著效果。

With the rapid rise of China s high-speed railway construction, China s railway technology level is gradually in the forefront of the world. Domestic high-speed railway station buildings are mostly large span space structures with weak lateral stiffness. The traditional seismic design method will lead to the large cross section of components, which will affect the use function, aesthetics and economy of the building. In order to seek for a better scheme, taking a high-speed railway station house located in a high seismic intensity area as the engineering background, this paper puts forward a damping technology scheme of joint control of buckling restraint support and viscous damping wall, and carries out time history analysis and optimization design for the structure under the action of frequent earthquakes and rare earthquakes. The results show that the joint scheme can control the structural deformation under frequent earthquakes and reduce the structural damage under rare earthquakes.