礁灰岩嵌岩桩的端承特性试验研究

doi:10.13722/j.cnki.jrme.2017.1102

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Abstract

In order to serve the pile foundation designs in China-Maldives Friendship Bridge construction project, and investigate the end bearing characteristics of rock-socketed pile in coral reef limestone, indoor mechanical tests and end bearing pile model tests were carried out on the reef limestone cores drilling from the bridge foundation position. By these means，the strength and failure law of reef limestone samples under three direction compression in the pile end are obtained. Experiment results show that the pile end stress are obviously higher than the uniaxial compression strength，and greatly influenced by specimen structure and strength. In different structure specimens，the pile end stress curve are in different growth trend with pile top displacement. In the processing of test results, we determined the vertical compressive ultimate bearing capacity of single pile in different structure specimens according to the technical code for testing of building foundation piles(JGJ106—2014). Considering the influence of diameter scale between actual pile and model test，the design reference of ultimate end bearing value in different structure types of reef limestone are determined after reduction associate with in-situ pile test result.

Key words： rock mechanics reef limestone rock-socketed pile end bearing capacity model test

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	Articles by authors
	LIU Haifeng1
	2
	ZHU Changqi1
	CUI Xiang1
	2
	MENG Qingshan1
	WU Wenjuan1
	2

Cite this article:

LIU Haifeng1,2,ZHU Changqi1, et al. Experimental research on end bearing characteristics of rock-socketed pile in reef limestone[J]. , 2018, 37(S2): 4348-4355.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2017.1102 OR https://rockmech.whrsm.ac.cn/EN/Y2018/V37/IS2/4348

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