上盖物业对复杂地层中的地铁车站影响效应预测
王呼佳1许炜萍2赵楚轩2杨朋1肖支飞2
Impact Effect Prediction of Overhead Property on Metro Station Built in Complex Strata
WANG HujiaXU WeipingZHAO ChuxuanYANG PengXIAO Zhifei
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作者信息:1.中铁二院工程集团有限责任公司,610031,成都；
2.西南交通大学交通隧道工程教育部重点实验室，610031,成都
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Affiliation:China Railway Eryuan Engineering Group Co., Ltd., 610031, Chengdu, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2019.07.006
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中图分类号/CLCN:U291
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栏目/Col:研究报告
摘要:
采用理论分析、数值分析和现场实测等手段，对广州地铁鹅掌坦站施工安全和上盖物业效应进行研究。结果表明：基坑施工导致的地面最大沉降为19 mm，围护结构最大水平位移为11 mm（位于基坑2/3开挖深度处），且地面沉降与围护结果水平位移均小于允许值30 mm；在基坑深度方向下部支撑轴力大于上部支撑，在纵向上支撑轴力呈现中间大、两边小的分布规律；上盖物业导致的地表沉降具有不均匀沉降特性，建筑物倾斜值为0.001，小于允许倾斜度，车站中柱应力增幅约为3.6 MPa，表明上盖物业对车站的附加影响不大，车站主体结构处于安全状态。研究结果可为类似复杂地层中地铁车站的修建和上盖物业的开发提供借鉴。
Abstracts:
By means of theoretical analysis, numerical test and field measurement, the construction safety of Ezhangtan Station in Guanghzou metro and the effect of overhead property are studied. The result shows that the maximum ground settlement caused by foundation pit construction is 19 mm, the maximum horizontal displacement of enclosure structure is 11 mm, which is located at 2/3 excavation depth of the foundation pit. Both settlement and lateral displacement are less than the allowable value of 30 mm. The axial force of lower support is larger than that of upper support along the depth direction of foundation pit, and the distribution law of middle support is larger than that of the upper support in the longitudinal direction. The ground settlement caused by the overhead property has the characteristics of uneven settlement, and the inclination value of the building is 0.001 which is small than the allowable inclination. The increase of the stress in the middle column of the station is about 3.6 MPa, indicating that the overhead property has little additional influence on the station, and the main structure of the station is in safety. This research results provide technical guidance and reference for metro stations built in complex strata and the overhead property development.
引文 / Ref:
王呼佳，许炜萍，赵楚轩，等.上盖物业对复杂地层中的地铁车站影响效应预测[J].城市轨道交通研究，2019，22(07):21.
WANG Hujia，XU Weiping，ZHAO Chuxuan，et al.Impact effect prediction of overhead property on metro station built in complex strata[J].Urban Mass Transit，2019，22(07)：21.
WANG Hujia，XU Weiping，ZHAO Chuxuan，et al.Impact effect prediction of overhead property on metro station built in complex strata[J].Urban Mass Transit，2019，22(07)：21.
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