【摘要】 结合深圳市地铁二号线侨香站基坑特点及周边环境,制定了有针对性的监测方案,并使用测斜仪、水准仪、频率接收仪对基坑深层水平位移、周边建筑沉降、支撑轴力等项目进行了跟踪监测。监测结果表明,深层水平位移变化受土体蠕变、地下水位升降以及附加荷载等因素影响,位移曲线形状大体呈"弓"形,建筑物沉降和轴力变化与基坑开挖深度变化基本一致。监测信息为优化施工方案和合理组织施工提供了可靠的依据,确保了基坑工程的施工质量以及施工期间周边建筑的安全,对类似工程有一定的参考价值。更多还原

【Abstract】 According to the characteristics and surrounding environment of the foundation pit of Shenzhen Metro No.2 Line’s Qiaoxiang Station,the targeted monitoring program is made for deep foundation pit,and the horizontal displacement,settlement and axial force of the pit are monitored by using the inclinometer,level and frequency receivers.The monitoring results show that the deep changes in the horizontal displacement would be affected by the soil creep,water level fluctuation,additional load and other factors,the displacement curve shape of the big lanes would appear as the "bow" shape,and the building’s settlement and changes in axial force would be basically consistant with the depth of the excavation.The monitoring information has provided the reliable data for the design optimization and rational organization during the construction to ensure the quality of the construction and the safety of the surrounding buildings,thus to provide some references for similar projects.更多还原