摘要
根据预应力混凝土桥梁的力学特性,提出了嵌入式空间预应力混凝土实体组合单元的概念。综合考虑预应力效应、徐变效应、温度荷载等影响因素,从桥梁空间应力状态的精细化分析着手,对东莞市石龙镇二桥的开裂成因及影响因素进行了研究,进而提出现阶段桥梁设计方法的改进建议。
In accordance with the mechanical behavior of prestressed concrete （PC） bridge, the concept of embedded spatial solid composite element of prestressed concrete is put forward. In consideration of influential factors, such as prestressing effect, creep effect and temperature load in a comprehensive way, and proceeding from refine analysis of bridge spatial stress conditions, the causes and influential factors leading to the cracks in the 2nd Shilong Town Bridge are studled, and proposal for improving design methods for the current PC bridges is made.
出处
《桥梁建设》
EI
CSCD
北大核心
2006年第2期77-80,共4页
Bridge Construction
关键词
预应力混凝土桥
箱形梁
裂缝
有限元法
分析
prestressed concrete bridge
box girder
crack
finite element method
analysis
