东南大学学报（英文版）2008，Vol.24Issue(1)：74-79,6.
跨海桥梁基础结构正常使用极限状态的设计方法
Design of foundation structures of sea-crossing bridges on serviceability limit state
摘要
Abstract
The target reliability indices of the foundation structures of sea-crossing bridges on the serviceability limit state (SLS) are different from those of common bridges due to their different surroundings.Consequently,three levels of the target reliability indices,which are 1.5,2.0 and 2.3,respectively,for those structures on the SLS are suggested based on the Joint Committee on Structural Safety (JCSS) model code,and a new method of calibrating factors of live loads,which is based on the contribution ratio of tensile stresses of reinforcing bars produced by various loads to the maximum crack width of concrete,is proposed.Finally,the calibration of the reliability-based factors of the frequent value and the quasi-permanent value of live loads is conducted by the Joint Committee (JC) method through an actual design,and the indices are proved to be reasonable and the new method is proved to be feasible.关键词
跨海桥梁/目标可靠度/校准法/频遇值/准永久值/基础结构Key words
sea-crossing bridges/target reliability/JC (Joint Committee) method/frequent value/quasi-permanent value/foundation structures分类
通用工业技术引用本文复制引用
金伟良,胡琦忠,帅长斌,于群力,鲁征..跨海桥梁基础结构正常使用极限状态的设计方法[J].东南大学学报（英文版）,2008,24(1):74-79,6.基金项目
The National Natural Science Foundation of China (No.50538070). （No.50538070）
