摘要
从便于进行大型复杂结构优化设计运用的角度出发，基于钢筋混凝土梁正常使用阶段最大裂缝宽度的计算，推导出裂缝截面混凝土名义拉应力与最大裂缝宽度的理论关系公式。基于大量试验资料的数理统计分析和可靠性要求，提出了名义拉应力的简化计算公式和实用公式。达到了以控制截面名义拉应力来实现控制最大裂缝宽度的目的。
In view of the convenient for optimum design of large and complex structures, based on the calculation of the maximum crack width of reinforced concrete beam under serviceability, the theoretical formula is deduced for relating the nominal tensile stress to the maximum crack w/dth of reinforced concrete beam. On the basis of＂ statistical analysis of test data and reliability requirement, the simplified and practical formulas for calculating the nominal tensile stress are proposed. Therefore, the purpose is up with controlling the nominal tensile stress to control the maximum crack width.
出处
《南水北调与水利科技》
CAS
CSCD
2010年第A01期36-38,共3页
South-to-North Water Transfers and Water Science & Technology
关键词
钢筋混凝土
梁
裂缝宽度
名义拉应力
优化设计
reinforced concrete
beam
crack width
nominal tensile stress
optimum design
