期刊论文

Study on long-term deflectionof cracking concrete beams

中文

四川建筑科学研究

1008-1933

2008

34

1

69-72

10.3969/j.issn.1008-1933.2008.01.019

06SK3100:湖南省科技计划 YKZ0601:益阳市科研计划项目

本校为第一机构

开裂混凝土构件的长期挠曲变形难以预测,配筋率、荷载大小及徐变收缩效应均是影响构件长期挠曲变形的重要因素。以钢筋混凝土梁近700 d的收缩徐变试验为基础,运用双线性法预测开裂钢筋混凝土梁的长期挠曲变形,编制了分析计算程序,与试验实测结果吻合较好,并对影响构件长期挠曲变形的因素进行了参数分析,本文方法便于工程实际应用。

It is difficult to predict long-term deflection of cracking concrete members, steel ratio, magnitude of load, creep and shrinkage effect are all the important factors which affect long-term deflection of members. Based on about 700 days＇ creep experiment of RC beams, long-term deflection of cracking RC beams were predicted by meaning of bilinear method, a program was compiled, the results fit the test data nicely, and analyzed parameters which affect long-term deflection of members, the method used i...