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| 客运专线路基工程中管桩应用机理研究 | |
| 引用本文： | 刘永超,许再良,张劲松,王清龙.客运专线路基工程中管桩应用机理研究[J].铁道工程学报,2011(2). |
| 作者姓名： | 刘永超 许再良 张劲松 王清龙 |
| 作者单位： | 1. 天津大学,天津,300072 2. 铁道第三勘察设计院集团有限公司,天津,300142 3. 天津建城基业集团有限公司,天津,300301 |
| 基金项目： | 国家自然科学基金资助项目(51078263] |
| 摘 要： | 研究目的:管桩已广泛应用于客运专线和高速铁路建设工程中,为深入探讨管桩的承载性能和路基实测沉降特性,并研究管桩的抗剪性能及在路基整体稳定中的作用,结合京津城际客运专线的设计、施工和沉降监测,系统地研究管桩在路基工程中的应用机理.研究结论:管桩具有高强、工期快、质量易于控制等优点,可满足客运专线建设标准高的要求,总沉降量和不同阶段的沉降速率明显优于其它加固方式;在水平力作用下土质地基中管桩是受弯破坏形态,按抗剪强度验算路基整体稳定性导致安全系数估值偏高;管桩承载有桩筏结构、桩板结构和桩网结构等方式,建议加强施工质世控制、提高桩间土强度、改善桩顶的连接方式并开展桩梁结构的研究. |
| 关 键 词： | 路基稳定 复合抗剪强度 客运专线 管桩 沉降 破坏形态 |
Research on Applicable Mechanism of Pipe Pile in Subgrade Engineering of Passenger Dedicated Line |
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| LIU Yong-chao,XU Zai-liang,ZHANG Jin-song,WANG Qing-long.Research on Applicable Mechanism of Pipe Pile in Subgrade Engineering of Passenger Dedicated Line[J].Journal of Railway Engineering Society,2011(2). | |
| Authors: | LIU Yong-chao XU Zai-liang ZHANG Jin-song WANG Qing-long |
| Institution: | LIU Yong-chao1,XU Zai-liang2,ZHANG Jin-song2,WANG Qing-long3 (1.Tianjin University,Tianjin 300072,China,2.The Third Railway Survey and Design Institute Group corporation,Tianjin 300142,3.Tianjin Jianchengjiye Construction Group Co.Ltd,Tianjin 300301,China) |
| Abstract: | Research purposes: Pipe pile has been widely applied in construction of passenger dedicated line and high-speed railway.Combining the design,construction and subsidence monitoring of the Beijing-Tianjin Intercity Railway,the applicable mechanism of the pipe pile in the subgrade engineering was systematically studyed for further understanding of the pipe pile's bearing capacity and the roadbed's actual settlement characteristics,and for the study on the pipe pile's shear performance and role in guaranteeing ... |
| Keywords: | subgrade stability composite shear strength passenger dedicated line pipe pile settlement failure state |
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