铁路复合地基沉降计算研究

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Abstract Research purposes: How to calculate soil foundation settlement simply as well as accurately is still an issue not well resolved in engineering design． Chord modulus reflects the nonlinear characteristics of soil ，but the applicability of chord modulus in the settlement calculation of railway composite foundation is a worthy discussion problem．

Research conclusions: The layer － wise summation method was modified based on the brief analysis of the chord modulus，and a related calculation program was written using VB computer language． Then，the settlements of gravel pile and cement mixed pile composite foundation of a railway engineering were calculated using the program．It shows that the p － s curves have good agreement with the actual values，and the method proposed in this article is applicable in the settlement calculation of railway composite foundation，which provides a preference to the similarly engineering．

Key words： modified layer － wise summation method chord modulus load test settlement calculation

Received: 27 May 2011

PACS:

TU433

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	XUE Xin － hua
	WEI Yong － xing

Cite this article:

XUE Xin － hua,WEI Yong － xing. Study on the Settlement Calculation of Railway Composite Foundation[J]. 铁道工程学报, 2011, 28(10): 42-45.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2011/V28/I10/42

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