混凝土梁裂缝宽度、刚度的统一计算方法及应用  

A unified computing model for the crack width and the flexural stiffness in concrete members and it's application

作　　者：周建民[1] 朱军[1] 朱顺宪[1] 

机构地区：[1]上海铁道大学土木建筑学院,上海200331

出　　处：《铁道学报》2000年第B05期62-66,共5页Journal of the China Railway Society

基　　金：铁道部科技发展计划项目 !(87G12 )

摘　　要：在模拟裂缝间钢筋应变分布的基础上 ,建立了混凝土梁滑移、裂缝宽度及刚度的统一计算方法 ,并提出了物理概念明确、计算简便的简化设计公式。所建议的计算公式经大量模型梁试验数据验证表明 ,计算公式具有较高的精度。Based on the simulating steel strain distribution in cracks, this paper establishes a unified computing model for the slip, the crack width and the flexural stiffness in concrete members. In addition, simpler calculating formulas which have a definite physical meaning are presented also in the paper. The formulas recommended are verified with the test data, the results show that the formulas have higher precision.

关 键 词：混凝土梁 裂缝 刚度 计算模式 宽度 桥梁 

分 类 号：U448.33[建筑科学—桥梁与隧道工程]