35m跨預應力箱型轉換梁分析與設計
耿耀明，陸秀麗
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(同濟大學建筑設計研究院三所,上海 200092)［摘要］對東莞大劇院工程中的預應力箱型轉換梁的分析與設計進行了介紹。通過ANSYS有限元程序對箱梁進行分析，得到箱梁整體受力特點，確定箱梁側壁計算模型，在豎向荷載作用下，側壁可簡化為平面內彎、剪構件來計算。并系統(tǒng)地闡述了有粘結預應力箱梁設計中預應力筋的計算方法、構造措施及施工組織等技術問題。［關鍵詞］箱梁;有粘結預應力;有限元Analysis and Design of Bonded Prestressed Box Transfor Beam in 35m SpanGeng Yaoming,Lu Xiuli(Architectural Design and Research Institute of Tongji University,Shanghai 200092,China)Abstract:Through the finite element program ANSYS,a detailed analysis and design of bonded prestressed box beam in the project of Dongguan Great Theatre is introduced,and the features of its global mechanical behavior have been obtained. Moreover,the calculation model of sidewall of the beam is also determined here. When the sidewall is subjected to vertical load,it can be simplified to a member forced by moment and shear in plane. The method of calculation of prestressing bar and its construction measure and progress are discussed systematically.Keywords:box beam; bonded prestressing; finite element作者簡介：耿耀明，博士，工程師，E-mail:gymdg@263.net。參考文獻［1］陶學康.后張預應力混凝土設計手冊［M］.北京：中國建筑工業(yè)出版社，1996.［2］上海市標準.預應力混凝土結構設計規(guī)程(DBJ08—69—97)［S］.
