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| Application of Rotational Cone Penetration in Geological Exploration for A Large Bridge in Tianjin |
| GAO Yan-xia, GAO Xiu-mei |
| The Third Railway Survey and Design Institute Group Corporation,Tianjin 300142, China |
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Abstract Research purposes: At present, the drilling and cone penetration are used for the geological exploration for railway in the areas of Tianjin and North China Plain. However, the conventional double penetration is difficult to penetrate the compacted silt and sand layer with burred depth of more than of 35m. The mechanical properties of the deep soil are obtained mainly by the drilling sampling and standard penetration test. The boring hole depth can not meet the needs of the design of the current railway bridge and inspection and calculation of the settlement of the soft soil subgrade. To seek the continuously, rapidly and accurately static cone penetration test technology featured with no disturbance and being used for the hard and deep stratum is the new research direction on the geotechnical testing technology.
Research conclusions: With the new rotational penetration test technology applied in survey for a super big railway bridge in Nangang of Tianjin, the penetration depth reached at 80m. The application showed this technology overcame the conventional static cone penetration tests demerits, such as unable to penetrate the hard and deep stratum and the shallow testing depth, met the needs of the engineering design and the rotational cone penetration was an in-site test method available for railway and the high-rise building.
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Received: 27 September 2012
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[1] 叶启民，刘永超，孟庆文.铁路静力触探四十年的成就[J].铁道工程学报,2005(S): 419-424.
Ye Qimin, Liu Yongchao, Meng Qingwen. The 40 Yerars Achievements of Cone Penetration Test ( CPT) for China Railway [J]. Journal of Railway Engineering Society, 2005(S): 419-424.
[2] 隋民锋,康志勇，高延霞.深孔静力触探的试验与应用[J].岩土工程界,2002(11): 61-62
Sui Minfeng, Kang Zhiyong, Gao yan Xia. Static Cone Penetration Test and Application in Deep Drill [J]. Geotechnical Engineering World, 2002(11): 61-62.
[3] 赵凤林，陈新军，叶启民.岩土工程原位测试旋转触探的测试方法及其专用设备[P].中国专利， ZL2006100143157.
Zhao Fenglin, Chen Xinjun, Ye Qimin. Testing Method for Geotechnical In-situ Rotary Sounding and Its Equipment [P]. Chinese Patient, ZL2006100143157.
[4] TB 10018—2003,铁路工程地质原位测试规程[S].
TB 10018—2003, Code for In-situ Measurement of Railway Engineering Geology [S].
[5] 赵凤林,陈新军.一种基于旋转触探的参数采集及处理微机系统[J].铁道工程学报, 2011(10): 111-114.
Zhao Fenglin, Chen Xinjun. A Computer System for Parameter Collecting and Processing Based on the RPT Technology [J]. Journal of Railway Engineering Society, 2011(10): 111-114.
[6] DB /T29—191—2009,天津市地基土层序划分技术规程[S].
DB /T29—191—2009, Technical Specification for Division of Subsoil Sequence in Tianjin [S].
[7] 陈新军,杨怀玉，赵凤林.应用旋转触探试验划分地层及确定土类定名方法研究[J].工程勘察, 2012(4): 16-20.
Chen Xinjun, Yang Huaiyu, Zhao Fenglin. Study on Stratigraphic Division and Soil Classification by Using Rotary Penetration Sounding Tests [J]. Geotechnical Investigation & Surveying, 2012(4): 16-20.
[8] 高颂东.静力触探参数与地基土物理力学指标（天津地区）相关分析研究[J].岩土工程界, 2003(7): 75-77.
Gao Songdong. Correlation Analyses of Static Sounding Parameters and the Physical- mechanic Indexes of Foundation Soil (Tianjing area) [J]. Geotechnical Engineering World, 2003(7): 75-77.
[9] 徐佳成,陈祖煜，王玉杰.静力触探实验数据库的建立及土体参数相关性分析[J].岩土工程技术,2010(6): 307-311.
Xu Jiacheng, Chen Zuyu, Wang Yujie. Database Establishment of CPT and Correlation Analysis of Soil Parameters [J]. Geotechnical Engineering Technique, 2010(6): 307-311.
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2013, Vol. 30 
