|
|
|
| Research on Survey Evaluation and Reinforcement Control Standard for Existing Railway |
| ZHAO Xiu － shao1，ZHU Jian － nong2，DAI Yu － qing2，WANG Liang － liang2，GENG Da － xin1，LIU Wei1 |
| 1． East China Jiaotong University，Nangchang，Jiangxi 330013，China; 2． Shanghai Design Institute Group Co． Ltd．and Construction Headquarters，China Railway Group Ltd． Shanghai 200070，China |
|
|
|
|
Abstract Research purposes: The existing railway must be evaluated in survey for reinforcement after operation for years to meet the requirements of the speed － raise and electrification． As there is no mathematical statistics method for survey evaluation on the existing railway，the filling materials segment method，task segment method and enforcement segment method are used for the evalution of the existing railway section by section after comparing the mathematical statistics method in " Code for Design of Building Foundations" and " Standards for highway Engineering Quality Inspection and Evaluation" ．
Research conclusions: The " Standards for highway Engineering Quality Inspection and Evaluation" is more suitable for survey evaluation of the existing railway． Taking the evaluation of dynamic deformation modulus as an example，combined with the related standard of the railway，the minimum Evd control standard is 40 MPa which don＇t need reinfor cement． The road sections length that need reinforcement are reduced when using segment evaluation method，achieving good effect． According to the statistics data and segment results，the Evd value has a close relationship with filling type on the surface of roadbed． It is difficult to ensure large stiffness when using A and B types filling，so lime or cement improved soil should be used to get larger stiffness．
|
|
Received: 30 December 2010
|
|
|
|
|
|
［1］ 赵文，谢强，Yongping Chen． 路基压实质量Evd评价建议标准试验研究［J］． 铁道工程学报，2009( 9) : 9 － 13．
Zhao Wen，Xie Qiang，Yongping Chen． Experimental Research on the Proposed Standard for Subgrade Compaction Quality with Evd Evaluation［J］． Jouranl of Railway Engineering Society，2009( 9) : 9 － 13．
［2］ 薄会申，李铂． 地基系数K30与变形模量Ev 及动态变形模量Evd的对比试验研究［J］． 铁道勘察，2007( 3) : 59 － 61．
Bo Huishen，Li Bo． The Comparison Experimental Study Among Foundation Coefficient ( K30 ) ，Deformation Modulus ( Ev) and Dynamic Deformation Modulus ( Evd ) ［J］． Railway Investigation and Surveying，2007( 3) : 59 － 61．
［3］ 沈培辉，杨平． 路面压实密实度评价方法的研究现状及展望［J］． 工程与试验，2010( 2) : 1 － 3．
Shen Peihui， Yang Ping． Research Status and Expectation on Evaluation Method of Pavement Compaction［J］． Engineering ＆ Test，2010( 2) : 1 － 3．
［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］ 郭传臣． Evd在新建地方铁路路基工程中的应用［J］． 铁道标准设计，2008( 2) : 17 － 19．
Guo Chuanchen． The Application of Evd in New －building Local Railway Roadbed Project［J］． Railway Standard Design，2008( 2) : 17 － 19．
［6］ 程远水，朱忠林，张千里，等． 提速线路路基检测评估方法及适用条件分析［J］． 铁道建筑，2007( 1) : 74 － 76．
Cheng Yuanshui，Zhu Zhonglin，Zhang Qianli，etc．The Research of Detection Methods and Applicable Conditions［J］． Railway Engineering，2007( 1) : 74 － 76．
［7］ 马伟斌，张千里，朱忠林，等． 既有线提速路基评估方法综述及进展［J］． 中国铁路，2006( 6) : 34 － 37．
Ma Weibin，Zhang Qianli，Zhu Zhonglin，etc． Advance in Evaluation of Speedup － railway Subgrade［J］．Chinese Railways，2006( 6) : 34 － 37．
［8］ JTG F80 /1—2004，公路工程质量检验评定标准［S］．
JTG F80 /1—2004，Quality Inspection and Evaluation Standards for Highway Engineering［S］．
［9］ GB 50007—2002，建筑地基基础设计规范［S］．
GB 50007—2002， Code for Design of Building Foundation［S］．
［10］ 铁建设［2005］160 号，客运专线铁路路基工程施工质量验收暂行标准［S］．
Rail Construction［2005］No． 160，Interim Standards for Quality Acceptance in Railway Subgrade Engineering Construction of Passenger Dedicated line［S］．
［11］ 王从贵． 动态变形模量Evd与地基系数K30的相关性研究［J］． 路基工程，2004( 2) : 4 － 6．
Wang Conggui． The Correlation Research Between Dynamic Deformation modulus ( Evd ) and Foundation Coefficient ( K30) ［J］． Subgrade Engineering，2004( 2) :4 － 6．
|
|
|
|
2011, Vol. 28 
