| CNC科研中心办公楼土钉拉力现场监测研究 |
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| 引用本文： | 张钦喜,段勇刚,李继红,宋景毅.CNC科研中心办公楼土钉拉力现场监测研究[J].岩土工程学报,2010(Z2). |
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| 作者姓名： | 张钦喜 段勇刚 李继红 宋景毅 |
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| 作者单位： | 北京工业大学城市与工程安全减灾教育部重点实验室;北京工业大学工程抗震与结构诊治北京市重点实验室;中铁建设集团有限公司; |
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| 摘 要： | 土钉支护中土钉拉力有多种计算方法。实践表明,土钉实际所受拉力与现有理论或规程计算结果相差较大。对CNC科研中心办公楼土钉支护进行了现场监测和分析,主要通过在土钉主筋上埋设钢筋应力计的方法,对土钉实际工作状态下的拉力进行了跟踪监测,并把实测拉力与现行常用计算方法得出的结果进行了比较和分析。研究结果表明,正常工作状态下土钉受力沿土钉长度方向呈抛物线形分布;在垂直方向,土钉拉力随深度的增加变化不大;土钉拉力明显小于现行规程计算结果。
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| 关 键 词： | 土钉支护 土钉拉力 现场监测 |
Measurements and analysis of stress in soil nails of CNC project |
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| ZHANG Qin-xi,DUAN Yong-gang,LI Ji-hong,SONG Jing-yi.Measurements and analysis of stress in soil nails of CNC project[J].Chinese Journal of Geotechnical Engineering,2010(Z2). |
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| Authors: | ZHANG Qin-xi DUAN Yong-gang LI Ji-hong SONG Jing-yi |
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| Affiliation: | ZHANG Qin-xi1,2,DUAN Yong-gang1,LI Ji-hong1,SONG Jing-yi3 (1.The Key Laboratory of Urban Security and Disaster Engineering,Ministry of Education,Beijing University of Technology,Beijing 100124 China,2.Beijing Key Lab of Earthquake Engineering and Structural Retrofit,3.China Railway Construction Group Company,Beijing 100040,China) |
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| Abstract: | There are ways to evaluate the stress of soil nails,but the actual stress is very different from theoretical analysis.In-situ measurements in CNC project in Beijing,mostly adopt the method which lays the reinforcing steel bar-stress measuring apparatus on primary reinforcing steel bar to gain actual pull force when the soil-nailing in working condition.Another method is to contrast the actual pull force with the value calculated by current regulations.The result of the study shows that the stress of soil na... |
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| Keywords: | soil-nailing retaining-structure stresses in soil nails in-situ test and measurement |
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