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随着城市地下轨道交通的迅猛发展,相当数量的城市桥梁面临着地铁穿越的影响,很多桥梁在地铁施工穿越过程中出现了相当程度的沉降、变形、裂缝甚至局部塌陷,严重的影响了桥梁的使用功能。笔者以北京十号线二期地铁穿越新兴桥为研究对象,建立了在役桥梁受地铁施工穿越的监测指标体系、对监测数据进行了分析处理,对地铁穿越施工对在役桥梁影响进行了评估。
With the rapid development of urban underground rail transit, a considerable number of urban bridges are facing the impact of subway traversing. Many bridges have experienced considerable settlement, deformation, cracks and even partial collapse during subway construction and have a serious impact on the bridge’s Use function The author takes the second phase of Beijing Metro Line 10 crossing Xinxing Bridge as the research object and establishes the monitoring index system of the existing bridges under the subway construction crossing. The monitoring data are analyzed and treated, and the influence of the subway crossing construction on the existing bridges is evaluated .