| 钢筋混凝土空间梁单元截面刚度计算的Cranston方法应用探讨 |
| |
| 引用本文： | 柯红军,李传习,李德慧.钢筋混凝土空间梁单元截面刚度计算的Cranston方法应用探讨[J].公路交通科技,2006,23(4):67-70. |
| |
| 作者姓名： | 柯红军 李传习 李德慧 |
| |
| 作者单位： | 1. 长沙理工大学,湖南,长沙,410076
2. 江西省交通科学研究所,江西,南昌,330038 |
| |
| 摘 要： | 研究了用空间杆系有限元进行钢筋混凝土结构空间弹塑性极限承载力分析中求截面弹塑性刚度的Cranston方法。通过理论分析,指出了已有方法在Cranston迭代收敛后求截面刚度的缺陷或不明确之处,提出了用有效截面的换算截面重心及数值积分求截面刚度时,均应采用微元切线模量的观点。在自编程序中采用不同模量对同一试验进行了全过程分析,有限元分析结果与试验结果对比,证明了该方法的正确性,可以用于大跨度钢筋混凝土结构的极限承载力分析。
|
| 关 键 词： | 空间杆系 弹塑性极限承载力 截面刚度 Cranston法 |
| 文章编号： | 1002-0268(2006)04-0067-04 |
| 收稿时间： | 2004-11-24 |
| 修稿时间： | 2004年11月24 |
Calculating Method for Section Stiffness of RC Structures Taking Elasticity and Plasticity into Account-Cranston Method and Its Application |
| |
| KE Hong-jun,LI Chuan-xi,LI De-hui.Calculating Method for Section Stiffness of RC Structures Taking Elasticity and Plasticity into Account-Cranston Method and Its Application[J].Journal of Highway and Transportation Research and Development,2006,23(4):67-70. |
| |
| Authors: | KE Hong-jun LI Chuan-xi LI De-hui |
| |
| Institution: | 1.Changsha University of Science and Technology, Hunan Changsha 410076, China; 2. Jiangxi Traffic Research Institute, Jiangxi Nanchang 330038, China |
| |
| Abstract: | The method of how to calculate the section's stiffness of the RC structure by link and beam finite elements is researched.By theoretical analysis,the defects or ambiguities in the existing Cranston method are discussed and pointed out.The standpoint that the tangent modulus should be used when calculating the center of gravity and stiffness of the useful cross section is brought forward.Various modulus were adopted in the program to analyze the test.The conclusion shows that the method is right comparing the FEM results with the test results and can be used to analyze the limit beaving capacity of large span concrete structure. |
| |
| Keywords: | Spatial staff finite element Elastic-plastic ultimate load capacity Section stiffness Cranston method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
