高层建筑隔震设计若干问题探讨
- 摘 要
-
(北京市建筑设计研究院有限公司， 北京 100045)
［摘要］结合工程实例对隔震结构设计中的嵌固刚度比问题进行分析，认为嵌固验算位置选取不合理将使嵌固刚度比要求失去实际意义；对隔震支座位移计算的地震输入及位移控制方法进行探讨，认为采用单向位移的控制方法偏不安全；对隔震支座拉应力计算相关问题进行分析和探讨的结果表明，在支座出现拉应力后，对隔震层的内力的计算将进入复杂的非线性阶段，如果计算模拟不得当将使支座拉应力计算结果出现严重偏差，影响隔震方案。［关键词］高层建筑; 隔震设计; 地震动输入; 嵌固刚度比; 最小剪重比中图分类号：TU352.12 文献标识码：A 文章编号：1002-848X(2015)18-0068-03
Discussion on several issues of isolation design for high-rise buildingsBu Longgui, Miao Qisong(Beijing Institute of Architectural Design, Beijing 100045, China)Abstract: Combined with an engineering example, build-in stiffness ratio for vibration isolation structure in the design was analyzed. It is considered that the selection of build-in check location should be reasonable or the build-in stiffness will lose practical significance. Isolation of displacement calculation of ground motion input and displacement control method were discussed, and it is considered that the one-way displacement control method of partial is unsafe. Analysis and discussion on relevant issues for tensile stress calculation of the isolation were done. The result shows that after tensile stress occurs in the bearing, internal force calculation of isolation layer will enter the stage of complex nonlinear, if computing simulation is not proper, the tensile stress of the bearing will appear serious deviation, so that impacts isolation scheme.Keywords: high-rise building; isolation design; ground motion input; build-in stiffness ratio; minimum shear-weight ratio
作者简介：卜龙瑰，硕士，高级工程师，Email：99790522@qq.com。
