| 基于塑性铰体外预应力混凝土梁的简化计算 |
| |
| 引用本文： | 李传习,曾永革,戴亚军.基于塑性铰体外预应力混凝土梁的简化计算[J].长沙交通学院学报,2007,23(1):1-5. |
| |
| 作者姓名： | 李传习 曾永革 戴亚军 |
| |
| 作者单位： | 长沙理工大学,桥梁与结构工程学院,湖南,长沙,410076 |
| |
| 摘 要： | 在承载能力极限状态下,可把简支梁的跨中区段视为1个等曲率塑性铰(塑性区段),其余梁段可视为直线并处于绕塑性铰刚性转动的位置.利用这一概念,建立了直接通过塑性铰区长度和曲率半径求体外预应力筋应力和梁极限弯矩的简化公式,用简化公式对国外有关6片体外预应力梁进行了计算,并与试验结果进行对比,证明本研究中的简化公式具有较好的精度,值得推广.
|
| 关 键 词： | 体外预应力 简支梁 简化计算 塑性铰 等曲率 刚性转动 |
| 文章编号： | 1000-9779(2007)01-0001-05 |
| 收稿时间： | 09 13 2006 12:00AM |
| 修稿时间： | 2006年9月13日 |
Simplified calculation for the externally prestressed beam based on the plastic hinge |
| |
| LI Chuan-xi,ZENG Yong-ge,DAI Ya-jun.Simplified calculation for the externally prestressed beam based on the plastic hinge[J].Journal of Changsha Communications University,2007,23(1):1-5. |
| |
| Authors: | LI Chuan-xi ZENG Yong-ge DAI Ya-jun |
| |
| Institution: | College of Bridge atilt Structure Engineering,Changsha University of Science and Technology, Changsha 410076, China |
| |
| Abstract: | Based on the conception that the simple beam rotates rigidly around the plastic hinge in the middle when the beam is at the ultimate state of anti-bending capacity,the formula for calculating the stress in the external tendons and the ultimate anti-bending capacity of the beam were developed.Moreover,six externally prestressed beams which were experimented overseas were analyzed with this method developed,by comparing the calculation result and the experiment data,it is found that the calculating method has a satisfactory precision and is worth being promoted. |
| |
| Keywords: | stress in external tendons simple beam simplified calculation plastic hinge equivalent angularity rigid rotation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
