【作者】 李俊； 朱宏平； 郭小川；

【Author】 Li Jun, Zhu Hongping, Guo Xiaochuan ( School of Civil Engineering & Mechanics, Huazhong University of Science & Technology, WUHAN 430074; Wuhan Municipal Engineering Design and Research Institute, WUHAN 430010)

【机构】 华中科技大学土木工程与力学学院； 武汉市政工程设计研究院；

【摘要】 连续刚构桥中墩梁固接处(即箱梁0#块)的结构构造和应力分布情况都比较复杂,运用平面杆系有限元法得到的计算结果不能准确反映0#块的三维应力状态。本文结合新建武汉天兴洲公铁两用长江大桥南岸主线高架桥预应力混凝土连续刚构桥,运用三维有限元分析程序ANSYS对0#块在施工阶段和成桥后正常使用阶段进行了空间有限元应力分析,掌握了 0#块的应力分布状况和分布规律,为0#块优化设计提供了依据．更多还原

【Abstract】 The zero segment is the key part of a prestressed concrete continuous rigid-frame bridge due to the complexity of its structure and stress distribution. The existing study shows that using the general plane-members finite element method (FEM) fails to reflect the spatial stress status of the zero segment. In this paper, the Tianxingzhou Road/Rail Yangtze River Bridge, a prestressed concrete continuous rigid-frame bridge, is taken as an example, and the three dimensional FEM ANSYS is used to analyze its spatial stress under construction and service phases for guiding the optimal design of the zero segment.更多还原