（天津市建筑设计院， 天津 300074）

［摘要］石林峡观景台位于北京市平谷区石林峡主峰顶部，采用斜拉索结构。介绍了结构体系及特点，采用MIDAS/Gen对结构进行了模态分析和非线性分析，并对主拱进行了非线性屈曲分析。分析结果表明，结构总体方案合理，拉索布置及其初始预拉力的设定合理，能够保证结构的安全性和舒适性。

［关键词］石林峡观景台； 索结构； 非线性分析； 屈曲分析

中图分类号：TU394文献标识码：A文章编号：1002-848X(2019)04-0033-05

Structural analysis of Shilinxia observation deck

Liu Zhenwen， Huang Zhaowei， Hu Xueying， Zhao Yuxin，  Liu Tao， Huang Xin， Zhu Xudong

（Tianjin Architecture Design Institute, Tianjin 300074, China）

Abstract:Located in the top of the main peak of Beijing Pinggu Shilinxia， Shilinxia observation deck adopts cable-stayed structure. The structure system and characteristics was introduced. The MIDAS/Gen was uesd for structural modal analysis and nonlinear analysis, and nonlinear buckling analysis was carried for the main arch. The analysis results show that the  overall structural system is reasonable; the arrangement and initial pretension setting of cable is reasonable; the security and comfort of the structure is assured.

Keywords:Shilinxia observation deck; cable structure; nonlinear analysis; buckling analysis

作者简介：刘振文，硕士，高级工程师，Email：liuzhenwen1980@126.com。