|
|||||
|
|
| 钢筋混凝土梁徐变效应试验研究与分析 | |
| 引用本文： | 曹国辉,方志,方智锋.钢筋混凝土梁徐变效应试验研究与分析[J].建筑科学,2007,23(3):52-55. |
| 作者姓名： | 曹国辉 方志 方智锋 |
| 作者单位： | 1. 湖南城市学院,湖南,益阳,413000;湖南大学,长沙,410082 2. 湖南大学,长沙,410082 3. 湖南城市学院,湖南,益阳,413000 |
| 基金项目： | 湖南省科技计划;湖南省教育厅科研项目 |
| 摘 要： | 基于徐变换算截面法推导了钢筋混凝土梁徐变收缩引起的截面应力计算公式,根据混凝土柱体2年试验观测,得到了素混凝土的徐变系数。编制了长期荷载作用下截面应力计算程序,并对完全开裂混凝土梁因徐变收缩效应引起的截面应力重分布规律进行了分析,与试验结果吻合较好,表明运用本文方法预测完全开裂混凝土梁的截面应力重分布是可行的。 |
| 关 键 词： | 钢筋混凝土梁 徐变收缩 应力应变 徐变换算截面法 |
| 文章编号： | 1002-8528（2007）03-0052-04 |
| 收稿时间： | 2006-03-31 |
| 修稿时间： | 2006-03-31 |
Experimental Study and Analysis on Creep Effect of R.C. Beams |
|
| CAO Guo-hui,FANG Zhi,FANG Zhi-feng.Experimental Study and Analysis on Creep Effect of R.C. Beams[J].Building Science,2007,23(3):52-55. | |
| Authors: | CAO Guo-hui FANG Zhi FANG Zhi-feng |
| Affiliation: | 1. Hunan City University, Yiyang 413000, Hunan , China ; 2. Hunan University, Changsha 410082, China |
| Abstract: | Formulas are deduced to calculate creep and shrinkage stresses of reinforced concrete beams based on creep transformed-section method,and creep coefficients of plain concrete are obtained according to two years test on concrete columns.A program was coded to calculate section stresses under sustained loading,and the stress redistribution regulation of completely cracked concrete beams due to creep and shrinkage effect was analyzed.The results are fitting well with test data;it shows that the method used in paper is feasible to forecast sectional stress redistribution of completely cracked concrete beams. |
| Keywords: | reinforced concrete beams creep and shrinkage stress and strain creep transformed-section method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |