浆喷桩地基控制高速铁路工后沉降的研究

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Abstract Research purposes:The treatment of the soft soil foundation of high － speed railway is crucial to the post －construction settlement of the subgrade．The deep cement mixing pile ( DCMP) is one way to treat the soft soil subgrade，and whether it meets the relevant technical requirements or not relates to the application of the DCMP in treating the soft soil foundation of high － speed railway． The effect of treating the soft soil foundation with deep cement mixing pile was fully studied by doing the field experiment．

Research conclusions:The experiment shows application of DCMP in treating the same soft soil subgrade as in the experimental section can meet the requirement of post － construction settlement for 5centimeters in a short period．The stress and differential settlement of composite foundation can be adjusted by gravel mat and geogrid． The pile body does not penetrate into embankment with the gravel mat and geogrid under it． With gravel and geogrid，the goal of homogenizing the stress and adjusting differential deformation can be achieved． The analysis of tested settlement show the rate of consolidation of the DCMP composite foundation is faster than the natural foundation．

Key words： railway engineering DCMP composite foundation post－construction settlement treatment of soft soil foundation

Received: 02 August 2012

PACS:

TU413.62

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Cite this article:

LI Tian － yi. Research on Controlling Post － construction Settlement of DCMP Composite Foundation of High － speed Railway[J]. 铁道工程学报, 2012, 29(11): 18-22.

URL:

http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2012/V29/I11/18

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