35m跨预应力箱型转换梁分析与设计
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(同济大学建筑设计研究院三所,上海 200092)［摘要］对东莞大剧院工程中的预应力箱型转换梁的分析与设计进行了介绍。通过ANSYS有限元程序对箱梁进行分析，得到箱梁整体受力特点，确定箱梁侧壁计算模型，在竖向荷载作用下，侧壁可简化为平面内弯、剪构件来计算。并系统地阐述了有粘结预应力箱梁设计中预应力筋的计算方法、构造措施及施工组织等技术问题。［关键词］箱梁;有粘结预应力;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作者简介：耿耀明，博士，工程师，E-mail:gymdg@263.net。参考文献［1］陶学康.后张预应力混凝土设计手册［M］.北京：中国建筑工业出版社，1996.［2］上海市标准.预应力混凝土结构设计规程(DBJ08—69—97)［S］.
