- 摘 要
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（1 昆明市公路局， 昆明 650032； 2 北京中交橋宇科技有限公司， 北京 100102）
［摘要］某橋梁結(jié)構(gòu)臨近軟土地基路段，受到道路沉降影響而出現(xiàn)嚴重病害。對該橋梁裂縫和臨近道路的沉降進行了調(diào)查，總結(jié)了該橋梁結(jié)構(gòu)的主要病害特征。采用多種有限元軟件（PLAXIS，MIDAS FEA，MIDAS Civil）對病害原因進行有限元模擬分析，結(jié)合有限元分析結(jié)果和現(xiàn)場測量結(jié)果著重分析了臨近道路沉降對該橋梁結(jié)構(gòu)的影響，總結(jié)了該橋梁結(jié)構(gòu)病害產(chǎn)生的原因。最后根據(jù)病害的產(chǎn)生原因，針對該橋梁結(jié)構(gòu)不同部位分別提出了相應的處治措施，并通過加固前后PLAXIS數(shù)值模擬結(jié)果的對比分析，說明了該處治措施的可行性和預期效果。
［關鍵詞］橋梁； 臨近道路； 沉降； 數(shù)值模擬； 處治措施
中圖分類號：TU279-7+2,TU375文獻標識碼：A文章編號：1002-848X(2018)04-0103-06
Analysis and treatment measures of influence on bridge structure by adjacent road settlement
Li Minghong1， Zhang Rui2
(1 Kunming Highway Bureau, Kunming 650032, China； 2 Beijing CCCC Qiaoyu Science and Technology Co., Ltd., Beijing 100102, China)
Abstract:A bridge structure is adjacent to the section of soft soil foundation, and serious damages are caused by the road settlement. The settlements of bridge crack and adjacent road were investigated and the damage characteristics of bridge structure were summarized. A variety of finite element software (PLAXIS, MIDAS FEA and MIDAS Civil) were used to conduct finite element simulation analyses of the causes of damages. Combined with the results of finite element analyses and field measurement results, the influence of adjacent road settlement on the bridge structure was analyzed, and the reasons for the occurrence of damages of bridge structure were summed up. Finally, according to the causes of the damages, corresponding treatment measures were put forward for different parts of the bridge structure. The feasibility and expected effect of the treatment measures were illustrated through comparative analyses of PLAXIS numerical simulation results before and after reinforcement.
Keywords:bridge; adjacent road; settlement; numerical simulation; treatment measure
作者簡介：李洪明，高級工程師，Email:826238043@qq.com。
