预应力混凝土结构裂缝控制及其可靠性分析
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摘要
用基于耐久性要求的设计方法对两榀框架楼面梁按处于低侵蚀及中等侵蚀环境 ,众多种荷载组合进行了配筋计算 ,并用两种方法计算相应的裂缝宽度。对计算结果的统计分析表明 ,两种侵蚀环境下的裂缝开展宽度均满足耐久性的控制要求。因此 ,该设计方法的验算公式与其相应的裂缝控制宽度是相辅相成的 ,设计方法也是安全可靠的
Under the action of slight and moderate corrosive environments, two frame structures subjected to the action of a lot of load combinations are analyzed. The correspondent crack width is also computed by two methods. The statistical analysis of the calculated results demonstrates that the crack width under two kinds of corrosive environments satisfies the requirements of crack control. Therefore, the checking formula for the designing method is consistent with the crack control width and the designing method is safe and reliable.
Under the action of slight and moderate corrosive environments, two frame structures subjected to the action of a lot of load combinations are analyzed. The correspondent crack width is also computed by two methods. The statistical analysis of the calculated results demonstrates that the crack width under two kinds of corrosive environments satisfies the requirements of crack control. Therefore, the checking formula for the designing method is consistent with the crack control width and the designing method is safe and reliable.
引文
1 张德锋,吕志涛.裂缝对预应力混凝土结构耐久性的影响.工业建筑,2000,30(11):12～14
2 吕志涛,杨建明.部分预应力混凝土框架结构的预应力度及配筋选择.建筑结构,1993(9):33～36
3 张德锋,吕志涛.基于耐久性要求的预应力混凝土框架结构设计方法.工业建筑,2003,33(3):31～34
4 陶学康.无粘预应力混凝土设计与施工.北京:地震出版社,1993.223～237
5 吕志涛,孟少平.现代预应力设计.北京:中国建筑工业出版社,1998.105～116
2 吕志涛,杨建明.部分预应力混凝土框架结构的预应力度及配筋选择.建筑结构,1993(9):33～36
3 张德锋,吕志涛.基于耐久性要求的预应力混凝土框架结构设计方法.工业建筑,2003,33(3):31～34
4 陶学康.无粘预应力混凝土设计与施工.北京:地震出版社,1993.223～237
5 吕志涛,孟少平.现代预应力设计.北京:中国建筑工业出版社,1998.105～116
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