后注浆群桩基础施工期沉降–时间规律试验研究

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Abstract Beijing—Shanghai high-speed railway field tests on post grouting of pile group foundation have been carried out. By analyzing the long-term settlement measured data of post grouting and non-grouting pile group foundation，the settlement development laws of post grouting and non-grouting long pile group foundation in deep soft soil have been researched. The stable time of settlement of pile group foundation are analyzed，and the influence mechanism of the post grouting effect on pile group settlement and its development laws are discussed. The conclusions are that both pile shaft grouting and pile end grouting have obvious function on the control of the settlement of long pile group foundation in deep soft soil；and the control effect of pile end grouting is superior to pile shaft grouting. For shortening time of consolidation settlement，the effect of pile end grouting is more stable. The development laws of settlement of all shaft grouting and end grouting pile group foundation have been changed obviously. Compared with corner pile grouting and side pile grouting，all pile group grouting is more beneficial to control the settlement and accelerate settlement stabilization.

Key words： soil mechanics post grouting pile group foundation settlement

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	Articles by authors
	ZOU Li1
	WU Xingxu1
	MA Jianlin1
	PENG Shengying2

Cite this article:

ZOU Li1,WU Xingxu1,MA Jianlin1, et al. EXPERIMENTAL STUDY OF SETTLEMENT-TIME REGULARITY OF POST GROUTING PILE GROUP FOUNDATION DURING CONSTRUCTION PERIOD[J]. , 2010, 29(S2): 4033-4037.

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https://rockmech.whrsm.ac.cn/EN/Y2010/V29/IS2/4033

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