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（天津市建筑設(shè)計(jì)院， 天津 300074）

［摘要］石林峽觀景臺(tái)位于北京市平谷區(qū)石林峽主峰頂部，采用斜拉索結(jié)構(gòu)。介紹了結(jié)構(gòu)體系及特點(diǎn)，采用MIDAS/Gen對(duì)結(jié)構(gòu)進(jìn)行了模態(tài)分析和非線性分析，并對(duì)主拱進(jìn)行了非線性屈曲分析。分析結(jié)果表明，結(jié)構(gòu)總體方案合理，拉索布置及其初始預(yù)拉力的設(shè)定合理，能夠保證結(jié)構(gòu)的安全性和舒適性。

［關(guān)鍵詞］石林峽觀景臺(tái)； 索結(jié)構(gòu)； 非線性分析； 屈曲分析

中圖分類號(hào)：TU394文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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

作者簡(jiǎn)介：劉振文，碩士，高級(jí)工程師，Email：liuzhenwen1980@126.com。