武汉首义广场隧道基坑支护与监测.pdf

施工技术 2011年5月下 64 CONSTRUCTION TECHNOLOGY 第40卷第341期 武汉首义广场隧道基坑支护与监测 泡秀文1，付涛，潘杰麟，林驰2，汪淑平3，蔡光煌3 (1.武汉理工大学资源与环境工程学院，潮北武汉430070；2.武汉城市建设投资开发集团有限公司， 湖北武汉430050：3.武汉市政建设集团机械化公司，湖北武汉430012) [摘要]武汉首义广场运用挡土墙、排桩、预应力钢支撑、悬臂桩、桩错、喷错等支护体系对基坑进行安全围护.运 用各种监测仪器和手段对基坑及重点文物保护单位红楼进行安全监测，对桩顶位移、相对沉降位移、连率和轴力等 参数进行观测，通过监测结果分析施工可能对红楼的影响并采取相应措施，从而确保基坑顺利施工及红楼的安全， 预测效果良好. [关键词]基坑：支护体系；安全监测：监测预报 [中图分类号]U456.3 [文献标识码]A [文章编号]1002-8498(2011)10-0064-03 Supporting and Monitoring of Tunnel Foundation Excavation in Wuhan Shouyi Square Chi Xiuwen' Fu Tao' Pan Jielin' Lin Chi? Wang Shuping' Cai Guanghuang? (1.School of Resouree Environment Engineering Wuhan University of Technology Wuhan Hubei 430070 China; 2.Wuhan Urban Construction Investment Development(Group)Co.Lid.Wuhan Hubei 430050 China; 3.Mechanization Company of Wuhan Municipal Group Wuhan Hubei 430012 China) Abstract:A series of supporting systems such as rubble retaining wall piles and steel supports cantilever piles pile-anchors spray anchors are adopted in Wuhan Shouyi Square.Meanwhile safety monitoring is carried out using advanced monitoring instruments and methods with emphasis on the key cultural relic of Honglou.Parameters including displacement of pile top relative settlement settle speed and axial stress are monitored.Based on the result of monitoring corresponding measures are applied to ensure the safe of Honglou.The result shows that construction effect is very well. Key words:foundation excavation;supporting system;safety monitoring;monitor...