| 钢筋混凝土结构三维非线性有限元裂缝追踪计算探讨 |
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| 引用本文： | 徐镇凯,杨志华,刘瑶. 钢筋混凝土结构三维非线性有限元裂缝追踪计算探讨[J]. 南昌大学学报(工科版), 2007, 29(2): 171-174,180 |
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| 作者姓名： | 徐镇凯 杨志华 刘瑶 |
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| 作者单位： | 南昌大学,建筑工程学院,江西,南昌,330031;南昌工程学院,江西,南昌,330099 |
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| 摘 要： | 用有限元法在计算机上对钢筋混凝土结构裂缝的产生与发展进行数值模拟时,有限元模型的选取至关重要,采用不同的有限元模型模拟出来的结果相差较大.本文针对钢筋混凝土结构的裂缝分析,提出了考虑箍筋和受压钢筋作用的三维有限元分析模型,同时引入混凝土多参数强度准则和非线性本构关系,对钢筋混凝土结构进行三维非线性有限元应力分析及裂缝开裂过程追踪;并与试验结果进行比较,吻合较好;说明考虑了箍筋作用的有限元模型对钢筋混凝土结构裂缝分析来说是较为合理的有限元模型.
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| 关 键 词： | 钢筋混凝土结构 非线性分析 有限元模型 裂缝 |
| 文章编号： | 1006-0456（2007）02-0171-04 |
| 收稿时间： | 2006-11-13 |
| 修稿时间： | 2006-11-13 |
Study on Three Dimensions Nonlinear Finite Element Tracing Crack of Reinforced Concrete Structures |
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| XU Zhen-kai,YANG Zhi-hua,LIU Yao. Study on Three Dimensions Nonlinear Finite Element Tracing Crack of Reinforced Concrete Structures[J]. Journal of Nanchang University(Engineering & Technology Edition), 2007, 29(2): 171-174,180 |
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| Authors: | XU Zhen-kai YANG Zhi-hua LIU Yao |
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| Affiliation: | 1. School of Architectural Engineering, Nanchang University, Nanchang 330031, China; 2. Nanchang Institute of Technology, Nanchang 330099, China |
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| Abstract: | When people imitate the crack happening and developing of reinforced concrete structures in computer by finite element method,it is very important to select the finite element model,because the imitation results of different model have great difference.Aiming at the crack analysis of reinforced concrete structures,the authors put forward a three dimension finite element model,which considers the effect of stirrup and compression bar and introduces several parameter strength criterion and nonlinear constitutive relation.The author uses this model to imitate the crack trace of reinforced concrete structures in computer,the results of imitation very coincide with the results of experiments.This shows that the finite element model of considering the effect of stirrup and compression bar is a rational model in analyzing crack of reinforced concrete structures. |
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| Keywords: | reinforced concrete structure nonlinear analysis finite element model crack |
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