混凝土( RC/PC)开孔梁抗裂性能与裂缝宽度验算
- 摘 要
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刘荣桂 吕志涛
(东南大学 南京 210096)[提要] 通过对10根混凝土( RC/PC)开孔梁的试验分析,详细讨论了混凝土(RC/PC)开孔梁的开裂特性,在此基础上用ADINA非线性有限元程序(混凝土模式)对试验结果进行了量化对比分析,最后提出了混凝土(RC/PC)开孔梁抗裂验算公式。计算结果表明,所给方法简便、实用,可直接应用于工程实际。
[关键词] 混凝土 仿真试验 抗裂 开孔This papcr discusscs the charactcristics of cracking in RC/PC bcams with large opcnings in dctails by cxpcrimcntal analysis of 10 samplcs. Bascd on analysis of ADINA finite clcmcnt program( with the modcl of concrctc), we give formulas for calculating the width of cracking in bcams with large opcnings. Calculating rcsults show that the mcthod providcd is rcliablc, convcnicnt, and can be uscd in cnginccring dcsigning dirccrly.
Keywords: concrcte structurc; imitatcd tcst; cracking; opcning