| 基于断裂力学分析桥梁结构极限承载力 |
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| 引用本文： | 陈维田,王芳,任国杰.基于断裂力学分析桥梁结构极限承载力[J].交通标准化,2011(14):103-106. |
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| 作者姓名： | 陈维田 王芳 任国杰 |
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| 作者单位： | 中交第一公路勘察设计研究院有限公司,陕西西安,710075 |
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| 摘 要： | 采用断裂力学方法,通过比较不同的宏观断裂力学模型,得出适合混凝土有限元分析的模型——裂纹带模型。基于该模型,编制有限元结构分析程序——桥梁结构承载力分析系统,计算试验梁的极限承载力,并将计算结果与试验数据相比较,验证本程序计算结果基本准确可靠,同时,与采用现行公路桥涵设计规范计算的该试验梁承载力相比较,证明现行公路桥涵设计规范在计算桥梁结构承载力时,安全储备较高。
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| 关 键 词： | 桥梁结构 极限承载力 断裂力学 有限元结构分析程序 |
Ultimate Bearing Capacity of Bridge Structure Based on Fracture Mechanics |
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| CHEN Wei-tian,WANG Fang,REN Guo-jie.Ultimate Bearing Capacity of Bridge Structure Based on Fracture Mechanics[J].Communications Standardization,2011(14):103-106. |
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| Authors: | CHEN Wei-tian WANG Fang REN Guo-jie |
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| Institution: | (CCCC First Highway Consultants Co.,Ltd.,Xi′an 710075,China) |
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| Abstract: | The paper compared different macrographs fracture mechanics models by fracture mechanics,and got the finite-element analysis model,which was crack band model.Based on crack band model,the finite-element structure analysis program of Bridge Bearing Capacity Analysis System was programmed.Then it calculated the ultimate bearing capacity of a test beam by this program and compared the calculated numeric value with the laboratory numeric value to prove the accuracy of program.Meanwhile,it compared the result wi... |
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| Keywords: | bridge structure ultimate bearing capacity fracture mechanics finite-element structure analysis program |
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