| 混合配筋预应力梁的截面长期应力分析 |
| |
| 引用本文： | 徐金声,陈永春,高红旗.混合配筋预应力梁的截面长期应力分析[J].建筑结构学报,1985,6(5):16-28. |
| |
| 作者姓名： | 徐金声 陈永春 高红旗 |
| |
| 作者单位： | 中国建筑科学研究院结构所
,中国建筑科学研究院结构所
,中国建筑科学研究院结构所 |
| |
| 摘 要： | 本文提供了钢筋(包括劲性骨架)混凝土梁承受预应力及长期荷载作用下精确而实用的理论分析方法及其通解,可用于计算任意时间梁截面上任意位置的应力值(长期预应力损失值)。 本方法的特点是将混凝土的收缩、徐变及预应力筋松弛三者的相互影响同时考虑,分层建立平衡方程,而对混凝土和预应力筋的应力应变关系运用徐变理论的物理方程,通过变形协调关系,计入预应力筋在变长度下的松弛,建立方程组,用线性代数获得通解。 文中附有计算例题。
|
| 收稿时间： | 1985-10-05 |
| 修稿时间： | 1985-10-05 |
Long-Term Stress Analysis in a Beam Cross-Section Reintorced Compositely with Prestressed Tendons and Non-Prestressed Steel |
| |
| Xu Jinshen Chen Yongchun Gao Honggi.Long-Term Stress Analysis in a Beam Cross-Section Reintorced Compositely with Prestressed Tendons and Non-Prestressed Steel[J].Journal of Building Structures,1985,6(5):16-28. |
| |
| Authors: | Xu Jinshen Chen Yongchun Gao Honggi |
| |
| Affiliation: | Xu Jinshen Chen Yongchun Gao Honggi (Institute of Building Structures,China Academy of Building Research ) |
| |
| Abstract: | This paper presents an accurate and practical method for theoretical analysis of prestressed concrete beams reinforced compos-itely with tendons and non-prestressed steel ( including section steel ) subjected to prestress and long-term loading. This method can be used to compute the stresses or long-term prestress losses in any point of the beam section at arbitrary time.The method is taking account of the interaction of shrinkage, creep of concrete, and relaxation of tendons, and setting equilibrium equations for different layers of tendons, As for the stress and strain relation of concrete and tendons in consideration of relaxation of shortened length of tendons, by using the physical equation in creep theory and compatibility of deformation, the general solution is obtained with solving linear algebra equations. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《建筑结构学报》浏览原始摘要信息 |
|
点击此处可从《建筑结构学报》下载全文 |
|
