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| 离散单元法中杆段多弹簧模型的改进 | |
| 引用本文： | 王强,吕西林. 离散单元法中杆段多弹簧模型的改进[J]. 沈阳建筑工程学院学报(自然科学版), 2007, 23(2): 191-194 |
| 作者姓名： | 王强 吕西林 |
| 作者单位： | [1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]同济大学土木工程防灾国家重点实验室,上海200092 |
| 基金项目： | 国家自然科学基金;沈阳建筑大学校科研和教改项目 |
| 摘 要： | 目的为应用离散单元法进行钢筋混凝土梁柱构件在一般荷载作用下的非线性反应分析,对杆段多弹簧模型进行改进.方法通过引入剪切弹簧,来传递单元之间的剪切力,剪切弹簧的本构关系采用二线型原点指向模型.并推导出弹簧组的力-位移关系与单元的运动方程.结果建立了完整的杆段多弹簧模型,并给出了剪切弹簧计算参数的确定方法.结论改进后的杆段多弹簧模型能够较好地描述钢筋混凝土梁柱构件压弯耦合以及剪切非线性性能. |
| 关 键 词： | 离散单元法 杆段多弹簧模型 钢筋混凝土梁柱 剪切弹簧 非线性分析 |
| 文章编号： | 1671-2021(2007)02-0191-04 |
| 修稿时间： | 2006-08-18 |
The Improvement of Segment-Multi-Spring Model of DEM |
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| WANG Qiang,L Xilin. The Improvement of Segment-Multi-Spring Model of DEM[J]. Journal of Shenyang Archit Civil Eng Univ: Nat Sci, 2007, 23(2): 191-194 | |
| Authors: | WANG Qiang L Xilin |
| Affiliation: | WANG Qiang,L(U) Xilin |
| Abstract: | In this paper,the segment-multi-spring model(SMSM)is improved so as to apply the distinct element method(DEM)to the nonlinear analysis of RC beams and columns under common load.The shearing force between the elements is transferred by introducing shear spring.The bilinear origin-oriented model is employed for the hysteresis model of the shearing spring.The force-displacement relationship of spring groups as well as the motion equation of elements is derived.A comprehensive SMSM is established and the analytic parameters of the shear spring are also determined.The improved SMSM can correctly simulate the axial-bending coupling performance as well as the shear nonlinear performance. |
| Keywords: | distinct element method(DEM) segment-multi-spring model(SMSM) RC member shear spring nonlinear analysis |
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