上海某高層再生混凝土結構設計與分析*
盧家森1，鄭振鵬1，肖建莊2
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(1 上海市城市建設設計研究總院， 上海 200125； 2 同濟大學， 上海 200092)
［摘要］五角場鎮(zhèn)340街坊商業(yè)辦公用房2A座結構高度45.6m，采用鋼筋混凝土框架-核心筒結構體系，3層以上結構構件應用再生混凝土材料，為國內首個采用再生混凝土的高層建筑。結合工程項目背景，介紹工程結構設計中的關鍵技術問題，包括再生混凝土材料分項系數(shù)及其彈性模量取值、再生混凝土強度設計值的確定和構件設計方法、結構設計與分析方法、抗震構造措施，并對再生混凝土的施工驗收提出了具體的要求。采用YJK及MIDAS Building兩種軟件對結構進行了整體計算分析，分析結果表明，兩個軟件在多遇地震作用下各項指標趨于一致，均滿足規(guī)范要求。采用SAP2000軟件補充了結構在罕遇地震作用下的靜力彈塑性分析，分析結果表明結構性能滿足預設的抗震性能目標。［關鍵詞］高層建筑; 再生混凝土; 再生混凝土材料分項系數(shù); 靜力彈塑性分析中圖分類號：TU375,TU973 文獻標識碼：A 文章編號：1002-848X(2016)12-0011-07
Structural design and analysis of a high-rise recycled concrete structure in ShanghaiLu Jiasen1, Zheng Zhenpeng1, Xiao Jianzhuang2(1 Shanghai Urban Construction Design & Research Institute, Shanghai 200125, China; 2 Tongji University, Shanghai 200092, China)Abstract: Commercial office building 2A in NO. 340 block in Wujiaochang Town has the structural height of 45.6m with reinforced concrete frame-corewall structural system including recycled concrete adopted in structural members above the third floor. The project is the first high-rise building adopting recycled concrete at domestic. Based on the project background, key technical issues in the structural design were introduced, such as recycled concrete material partial factor and elastic modulus value determination, recycled concrete strength value determination and member design method, structural design and analysis methods and the seismic construction details. In addition, specific requirements for the construction and acceptance of recycled concrete were put forward. The overall structural analysis was carried out by using programs of YJK and MIDAS Building. Analysis results show that the indicators under the effect of requent earthquake by two programs tend to be consistent and meet the requirements of the specifications. The static elasto-plastic analysis of structures under rare earthquake was carried out by using SAP2000, and the results show that the performance of the structure can meet the expected seismic performance goals.Keywords: high-rise building; recycled concrete; material partial factor of recycled concrete; Pushover analysis
*上海市科學技術委員會科研項目（14231201301）。作者簡介：盧家森，博士，一級注冊結構工程師，英國皇家結構工程師協(xié)會會員，Email：lujiasen99@sina.com。
