混凝土( RC/PC)開孔梁抗裂性能與裂縫寬度驗算
劉榮桂 呂志濤
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劉榮桂 呂志濤
(東南大學 南京 210096)[提要] 通過對10根混凝土( RC/PC)開孔梁的試驗分析,詳細討論了混凝土(RC/PC)開孔梁的開裂特性,在此基礎上用ADINA非線性有限元程序(混凝土模式)對試驗結果進行了量化對比分析,最后提出了混凝土(RC/PC)開孔梁抗裂驗算公式。計算結果表明,所給方法簡便、實用,可直接應用于工程實際。
[關鍵詞] 混凝土 仿真試驗 抗裂 開孔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