Field Monitoring of a Tunnel Bridge During Jackin Construction

摘要：

Frame tunnel bridges are commonly selected when overhead crossing bridges at intersection of railway and highway are built.In these situations jacking construction method is frequently used for the frame tunnel bridge.During construction of tunnel bridges there are some important safety risks.Field monitoring of a frame tunnel bridge,Dengzhuang Bridge,during jacking construction is presented in this paper.The maximum tensile strain is 91με which is smaller than the ultimate tensile strain of concrete.The monitored bridge did not crack during jacking stage.The research results of this paper provide helpful reference for the design,construction and crack prevention of frame tunnel bridges.

关键词： frame tunnel bridges jacking construction deferential settlements crack

作者: Wenliang Lu Wenhui Li

作者单位: School of Civil Engineering Beijing Jiaotong University Beijing,China Beijing Urban Engineering Design & Research Institute Co.,Ltd.Beijing,China

会议类型: 国际会议

会议名称: 2009 8th International Conference on Reliability,Maintainability and Safety(第八届中国国际可靠性、维修性、安全性会议)

会议地点: 成都

会议语种:英文

页码: 502-506

在线出版日期: 2009-08-24（万方平台首次上网日期，不代表论文的发表时间）