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《Journal of Shanghai Jiaotong University》 2013-09
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Field Test of Segment Characteristics for Shield Advancing in Mined Tunnel

ZHANG Chang-guang;ZHANG Qing-he;ZHANG Zhen-guang;School of Civil Engineering,Chang'an University;Department of Geotechnical Engineering,Tongji University;Shanghai No.1 Municipal Engineering Co.Ltd.;  
In the construction of a certain tunnel in Shenzhen Metro,a field test of segment characteristics was conducted for the novel shield after the drill and blast composite construction method.The concrete strain gauge,earth pressure cell and reinforced axial dynamometer were installed.The variation laws for the longitudinal strain of girth contact surface for concrete segment,earth pressure and axial force of reinforced instrument were monitored and discussed.The results show that the variation with time of monitoring values can be divided into two stages;the overall pre-pressure basically meets the requirement;the longitudinal strain of girth contact surface for concrete segment and earth pressure are very unevenly distributed;grouting can improve and control the force and floating of segment;reinforcement design of segment should be optimized as the measured axial force is much smaller than its design value;a number of orderly tightening ring bolts and grouting behind wall segment are needed.
【Fund】: 国家自然科学基金项目(41202191);; 中国博士后科学基金项目(2012M520079、2013T60868);; 高等学校博士学科点专项科研基金项目(20120205120001);; 长安大学中央高校基本科研业务费专项资金(2013G2283007);; 上海城建集团科技攻关项目资助
【CateGory Index】: U455.43
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【Citations】
Chinese Journal Full-text Database 5 Hits
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 ZHANG Zhi-wei1,JIA Yan-min1,ZHAO Yan-juan2(1.College of Civil Engineering,Northeast Forestry University,Harbin 150040, China;2.No.4 Engineering CO.,Ltd.of China Railway 13 Bureau Group Corporation,Harbin 150008,China);CONSTRUCTION TECHNOLOGY OF SHIELD TUNNELING OF GUANGZHOU METRO TUNNEL[J];Low Temperature Architecture Technology;2010-06
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