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屈曲約束支撐在某裝配式項目中的應用研究
司斌1,唐小輝1,郝露露1,鐘才敏1,謝超2
摘 要

(1 上海中森建筑與工程設計顧問有限公司, 上海 200062; 2 上海力岱結構工程技術有限公司, 上海 200086)

[摘要]屈曲約束支撐在裝配式結構中的應用是裝配式結構抗震設計的一種新思路。以某帶屈曲約束支撐的裝配式整體混凝土框架結構的商務酒店為例,結合帶屈曲約束支撐的消能減震技術,從抗震指標、經濟性及工業化預制效率、建筑功能等多方面進行結構體系對比。采用MIDAS Gen軟件對帶屈曲約束支撐的裝配式框架結構進行大震作用下抗震性能分析,并結合預制構件間的連接和屈曲約束支撐安裝施工精度等因素,采用節點核心區預制的方案,隨后對節點及構件接縫進行大震作用驗算,計算結果滿足規范要求。將屈曲約束支撐的消能減震技術和裝配式結構結合,為提高裝配式結構的抗震性能提供一種有效的技術選擇。

[關鍵詞]屈曲約束支撐(BRB); 裝配式混凝土框架結構; 結構選型; 動力彈塑性時程分析; 消能減震

中圖分類號:TU352文獻標識碼:A文章編號:1002-848X(2019)15-0032-06

 

Application research of buckling-restrained braces in a prefabricated project

Si Bin1, Tang Xiaohui1, Hao Lulu1, Zhong Caimin1, Xie Chao2

(1 Zhongsen Architectural and Engineering Designing Consultant  Ltd., Shanghai 200062, China;2 Shanghai Lead Dynamic Engineering Co., Ltd., Shanghai 200086, China)

Abstract:The application of buckling-restrained braces in assembled structure is a new idea for seismic design of assembled structures. A commercial hotel project  adopting a prefabricated concrete frame structure with buckling-restrained braces was taken as an example, the structural systems with buckling-restrained braces with other conventional structural systems were compared in terms of seismic index, economy, industrialization prefabrication efficiency and architectural function, etc. MIDAS Gen software was used to analyze the seismic performance of assembled concrete frame structure with buckling-braces under rare earthquake. Considering the connection practicability between prefabricated members and the installation accuracy of buckling-restrained braces, the scheme of prefabrication of concrete beam-column joints was adopted, and the earthquake action checking of joints and connections was carried out. The calculation results meet the requirements of the code. Combining the energy dissipation technology of buckling-restrained braces with the assembled structure to provide an effective technical choice for improving the seismic performance of the assembled structure.

Keywords:buckling-restrained brace(BRB); assembled concrete frame structure; selection of structural system; dynamic elasto-plastic time history analysis; energy dissipation

 

作者簡介:司斌,碩士,高級工程師,Email:[email protected]

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