高速铁路中深厚全风化花岗岩地基处理探讨

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Abstract Research purposes: When the high － speed railway passes through deep completely decomposed Granite zones，it is necessary to search for a reasonable method for treatment design of deep completely decomposed granite foundation because the compressibility of completely decomposed granite is big and the post － construction settlement of high － speed railway should be controlled strictly． By taking an example，this paper explains the reasonable calculation method for the natural foundation settlement and deeply discusses the matter for caution in design of foundation treatment．

Research conclusions: The compression indexes of completely decomposed granite obtained from laboratory consolidation test are of low reliability，and using these indexes can easily cause the waste in foundation treatment design． The compression indexes obtained from the standard penetration test are relatively accurate and can be used for the design， but the accuracy and applicability of empirical relation between deformation modulus and SPT blow count is worth further studying in combination with the properties of local decomposed granite．

Key words： completely decomposed granite foundation treatment settlement CFG pile

Received: 08 October 2011

PACS:

U213． 1+57

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	HUANG Jian － chuan
	SUI Xiao － min

Cite this article:

HUANG Jian － chuan,SUI Xiao － min. Discussion on Treatment of Deep Completely Decomposed Granite Foundation of High － speed Railway[J]. 铁道工程学报, 2011, 28(12): 31-34.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2011/V28/I12/31

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