马普托大桥南锚碇工程半成岩力学特性试验研究

doi:10.13722/j.cnki.jrme.2016.1501

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (461 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要半成岩是一种半岩半土的特殊工程地质载体，目前针对半成岩力学特性的研究较少。依托马普托大桥南侧锚碇工程，设计可同时进行岩基承载及两相胶结面剪切的现场试验框架，开展基底细砂半成岩载荷试验和混凝土–半成岩两相胶结面剪切现场试验，获得细砂半成岩的承载和剪切力学参数，进一步深入研究和讨论半成岩变形模量的预测方法及混凝土–半成岩两相胶结面剪切破坏的形态及机制。研究表明细砂半成岩的承载性能与岩石类似，采用基于现场地质条件的经验方法可以较准确地估算半成岩的变形模量；细砂半成岩的混凝土–半成岩两相剪切具有独特的性质，其低致密性导致与混凝土形成很强的胶结作用和较明显的胶结带，从而增加了两相胶结面的粗糙程度。在预测混凝土与半成岩两相胶结抗剪强度时，需充分考虑混凝土浸入半成岩的胶结作用。研究结果为大桥锚碇设计提供了可靠的参数支持，为类似地质条件的工程提供可靠依据。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	张琦1
	2
	徐江1
	2
	戴国亮1
	2
	秦伟1
	2
	白鹏宇3

关键词 ：岩土工程, 半成岩, 现场试验, 力学特性, 变形模量, 胶结作用

Abstract：Hypabyssal rock is a special material with the property between rock and soil. Few researches have been conducted on the mechanical properties of hypabyssal rock. In this study，a field test device for conducting the load carrying tests and the shearing tests simultaneously was designed. The load carrying test of fine sand hypabyssal rock and the shear test on cementation surface of concrete and fine sand-hypabyssal rock were conducted at the south anchorage base of Maputo bridge. The load carrying and shearing parameters of the fine sand-hypabyssal rock are obtained. Based on the obtained parameters，the prediction of deformation modulus of hypabyssal rock and the morphology and mechanism of shear failure of cementation surface were further studied and discussed. The bearing property of hypabyssal rock was found to be similar to rock. The empirical methods based on the on-site geological conditions can be used to estimate the deformation modulus accurately. However，the shear property of the cementation surface is different from the rock. Its low compactness leads to the strong cementation with the concrete and form an obvious adhesive zone. The cementation should be fully considered when the shear strength of the hypabyssal rock-concrete cementation surface is evaluated.

Key words： geotechnical engineering hypabyssal rock field experiment mechanical property deformation modulus cementation

引用本文:

张琦1，2，徐江1，2，戴国亮1，2，秦伟1，2，白鹏宇3. 马普托大桥南锚碇工程半成岩力学特性试验研究[J]. 岩石力学与工程学报, 2017, 36(10): 2484-2491.
ZHANG Qi1，2，XU Jiang1，2，DAI Guoliang1，2，QIN Wei1，2，BAI Pengyu3. Experimental study on mechanical property of hypabyssal rock at south anchorage base of Maputo bridge. , 2017, 36(10): 2484-2491.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2016.1501 或 http://www.rockmech.org/CN/Y2017/V36/I10/2484

[5]	王保田，朱珍德，张福海，等. 花岗岩与混凝土胶结面抗剪强度的试验研究[J]. 岩土力学，2004，25(11)：1 717-1 721.(WANG Baotian，ZHU Zhende，ZHANG Fuhai，et al. Experiment on the resistance of the base-contact surface of the anchors and rocks[J]. Rock and Soil Mechanics，2004，25(11)：1 717-1 721.(in Chinese))
[17]	HOEK E，CARRANZA-TORRES C，CORKUM B. Hoek-Brown failure criterion-2002 edition[C]// HAMMAH R，BAWDEN W F，CURRAN J，et al ed. Proceedings of the North American Rock Mechanics Society NARMS-TAC 2002. Toronto：University of Toronto Press，2002：267-273. " target="_blank">
[20]	HOEK E，DIEDERICHS M S. Empirical estimation of rock mass modulus[J]. International Journal of Rock Mechanics and Mining Sciences，2006，43(2)：203-215. " target="_blank">
[6]	朱珍德，邢福东，渠文平，等. 岩石-混凝土两相介质胶结面抗剪强度分形描述[J]. 岩石力学与工程学报，2006，25(增1)：2 910- 2 917.(ZHU Zhende，XING Fudong，QU Wenping，et al. Fractal description of shear strength of cementation plane between rock and concrete[J]. Chinese Journal of Rock Mechanics and Engineering，2005，26(Supp.1)：2 910-2 917.(in Chinese))
[18]	GOKCEOGLU C，SONMEZ H，KAYABASI A. Predicting the deformation moduli of rock masses[J]. International Journal of Rock Mechanics and Mining Sciences，2003，40(5)：701-710.
[24]	BARTON N R, CHOUBEY V. The shear strength of rock joints in theory and practice[J]. Rock Mechanics，1977，10(1)：1-54. " target="_blank">
[2]	高文华，朱建群，张志敏，等. 软质岩石地基承载力试验研究[J]. 岩石力学与工程学报，2008，27(5)：953-959.(GAO Wenhua，ZHU Jianqun，ZHANG Zhimin，et al. Experiment study on bearing capacity of soft rock foundation[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(5)：953-959.(in Chinese))
[8]	SONMEZ H，ULUSAY R. Modifications to the geological strength index(GSI) and their applicability to stability of slopes[J]. International Journal of Rock Mechanics and Mining Sciences，1999，36(6)：743-760. " target="_blank">
[16]	BARTON N. Some new Q value correlations to assist in site characterization and tunnel design[J]. International Journal of Rock Mechanics and Mining Sciences，2002，39(2)：185-216.
[21]	ZHANG L Y. Determination and applications of rock quality designation(RQD)[J]. Journal of Rock Mechanics and Geotechnical Engineering，2016，8(3)：389-397. " target="_blank">
[25]	胡晓飞，杜时贵. 结构面粗糙度系数 Barton 直边法的简明公式[J]. 工程地质学报，2008，16(2)：196-200.(HU Xiaofei，DU Shigui. Concise formula of Barton′s straight edge method for joint roughness coefficient[J]. Journal of Engineering Geology，2008，16(2)：196-200.(in Chinese))
[7]	陈记，徐卫亚，朱珍德，等. 基岩-混凝土胶结面剪切强度JRC-JCS模型研究[J]. 河海大学学报：自然科学版，2003，31(4)：407-410.(CHEN Ji，XU Weiya，ZHU Zhende，et al. Study on JRC-JCS model for shear strength of bedrock-concrete cement planes[J]. Journal of Hohai University：Natural Sciences，2003，31(4)：407-410.(in Chinese))
[11]	BIENIAWSKI Z T. Engineering rock mass classifications：a complete manual for engineers and geologists in mining，civil and petroleum engineering[M]. New York：Wiley，1989：52-55. " target="_blank">
[13]	NICHOLSON G A，BIENIAWSKI Z T. A nonlinear deformation modulus based on rock mass classification[J]. International Journal of Mining and Geological Engineering，1990，8(3)：181-202. " target="_blank">
[15]	READ S A L，RICHARDS L R，PERRIN N D. Applicability of the Hoek-Brown failure criterion to New Zealand greywacke rocks[C]// VOUILLE G，BEREST P，ed. Proceedings of the Ninth International Congress on Rock Mechanics. Paris：[s.n.]，1999：655-660. " target="_blank">
[1]	边智华，李维树. 南京长江二桥基岩的工程力学性质试验研究[J]. 长江科学院院报，1999，16(4)：42-45.(BIAN Zhihua，LI Weishu. Research on engineering mechanics properties of rock foundation under second Changjiang bridge in Nanjing[J]. Journal of Yangtze River Scientific Research Institute，1999，16(4)：42-45.(in Chinese))
[12]	SERAFIM J L，PEREIRA J P. Consideration of the geomechanical classification of Bieniawski[C]// OLIVERIRA R，ed. Proceedings of International Symposium Engineering and Underground Construction. Lisbon：[s.n.]，1983：33-44. " target="_blank">
[4]	吉林，眭峰，王保田. 润扬大桥锚碇基岩摩阻力试验研究[J]. 岩石力学与工程学报，2004，23(2)：256-260.(JI Lin，XU Feng，WANG Baotian. Testing study of base resistance of the anchors at Runyang bridge[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(2)：256-260.(in Chinese))
[22]	SONMEZ H，GOKCEOGLU C，NEFESLIOGLU H A，et al. Estimation of rock modulus：for intact rocks with an artificial neural network and for rock masses with a new empirical equation[J]. International Journal of Rock Mechanics and Mining Sciences，2006，43(2)：224-235. " target="_blank">
[3]	吕天启，刘光廷. 砂砾软岩的极限承载力分析[J]. 岩石力学与工程学报，2005，24(11)：1 942-1 946.(LU Tianqi，LIU Guangting. Study on ultimate bearing capacity of soft sandy gravel rock foundation[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(11)：1 942-1 946.(in Chinese))
[9]	朱合华，张琦，章连洋. Hoek-Brown 强度准则研究进展与应用综述[J]. 岩石力学与工程学报，2013，32(10)：1 945-1 963.(ZHU Hehua，ZHANG Qi，ZHANG Lianyang. Review of research progresses and applications of Hoek-Brown strength criterion[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(10)：1 945-1 963.(in Chinese))
[10]	HOEK E，BROWN E T. Practical estimates of rock mass strength[J]. International Journal of Rock Mechanics and Mining Sciences，1997， 34(8)：1 165-1 186. " target="_blank">
[14]	MITRI H S，EDRISSI R，HENNING J. Finite element modeling of cable bolted stopes in hard rock ground mines[C]// Society for Mining Metallurgy and Exploration Annual Meeting. Albuquerque：[s. n.]，1994：94-116. " target="_blank">
[19]	SONMEZ H，GOKCEOGLU C，ULNSAY R. Indirect determination of the modulus of deformation of rock masses based on the GSI system[J]. International Journal of Rock Mechanics and Mining Sciences，2002，41(5)：849-857. " target="_blank">
[23]	LI A J，MERIFIELD R S，LYAMIN A V. Stability charts for rock slopes based on the Hoek-Brown failure criterion[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(5)：689-700.