| 基于有限元的在役桥梁综合损伤评测法 |
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| 引用本文： | 王凌波,贺拴海,赵煜,蒋培文.基于有限元的在役桥梁综合损伤评测法[J].广西大学学报(自然科学版),2011,36(1):94-100. |
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| 作者姓名： | 王凌波 贺拴海 赵煜 蒋培文 |
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| 作者单位： | 长安大学,桥梁与隧道陕西省重点实验室,陕西,西安,710064 |
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| 基金项目： | 国家交通部西部交通建设科技项目(200731881232); 国家自然科学基金资助项目(50908017) |
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| 摘 要： | 为研究在役桥梁遭受混凝土开裂、钢筋锈蚀、预应力缺损等诸多病害作用下梁体的实际刚度分布状况,根据平截面假定及有限元基本原理,推导梁桥纵向刚度分段求解方程组.借助室外实梁试验,通过施加跨中集中荷载,读取纵梁各代表性分段测点挠度值以修正桥梁纵向刚度.分析结果表明:由于损伤原因及损伤程度各不相同,实际梁体刚度分布随纵向分配区域...
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| 关 键 词： | 纵向刚度 桥梁检测 有限元 不可见损伤 |
A comprehensive evaluation method of damage in in-service girder bridges based on the finite element method |
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| WANG Ling-bo,HE Shuan-hai,ZHAO Yu,JIANG Pei-wen.A comprehensive evaluation method of damage in in-service girder bridges based on the finite element method[J].Journal of Guangxi University(Natural Science Edition),2011,36(1):94-100. |
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| Authors: | WANG Ling-bo HE Shuan-hai ZHAO Yu JIANG Pei-wen |
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| Institution: | WANG Ling-bo,HE Shuan-hai,ZHAO Yu,JIANG Pei-wen(Key Laboratory of Shaanxi Province for Bridge and Tunnel,Chang'an University,Xi'an 710064,China) |
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| Abstract: | In older to study the actual stiffness distribution of beams suffered from all kinds of diseases such as concrete crack,rebar corrosion and prestressed defect,subsection equation of longitudinal stiffness was deduced according to the plane cross-section assumption and the finite element theory.Applying a concentrated load to the mid-span of the beams in-site and obtaining deflection results of the typical sections,longitudinal stiffness of the bridge is corrected and the theory is verified.The analysis resu... |
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| Keywords: | longitudinal stiffness bridge detection finite element invisible damage |
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