汪云龙,袁晓铭,孙锐,张文彬,王克

• 1:中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室

摘要(Abstract)：

珊瑚吹填土是因南海造岛工程需求而引起重视的新型工程材料,对其初始剪切模量(G_(max))的研究是人工岛地基变形分析与稳定性分析的基础。利用自主研发的无黏性土初始剪切模量试验设备,研究珊瑚吹填土振动加密过程中的G_(max)发展规律,并与标准砂和砾石配置的一般无黏性土和陆相沉积的砾性土进行对比。试验结果显示,珊瑚吹填土与陆源无黏性土的G_(max)压实度关系不同,前者存在先增后减的阈值,而后者单调增加。研究表明,珊瑚吹填土的工程性质具有显著的区域性;工程建设中对珊瑚吹填土振动加密效果的控制,应根据试验确定合理的压实度区间,不可直接套用陆源土方法。

关键词(KeyWords)： 珊瑚吹填土;岛礁工程;初始剪切模量;压实度;砾性土

Abstract:

Keywords:

基金项目(Foundation): 中国地震局工程力学研究所基本科研业务费专项资助项目(2017B09);; 国家自然科学基金项目(41602321)资助~~

作者(Author): 汪云龙,袁晓铭,孙锐,张文彬,王克

DOI: 10.16441/j.cnki.hdxb.20160473

参考文献(References)：

• [1]Fookes P G.The geology of carbonate soils and rock and their engineering characteristics and description[C].Engieering for Calcareous Sediments[C].Balkema:Rotterdam,1988:787-796.
• [2]吕海波,汪稔,孔令伟.钙质土破碎原因的细观分析初探[J].岩石力学与工程学报,2001,20(S1):890-892.Lv Haibo,Wang Ren,Kong Lingwei.Preliminary mesoscopic analysis of factors of breakage in calcareous soil[J].Chinese Journal of Rock Mechanics and Engineering,2001,20(S1):890-892.
• [3]Kaggwa W S,Poulos H G.Comparison of the Behavior of Dense Carbonate Sediments and Silica in Cyclic Triaxial Tests[R].[s.l.]:In The University of Sydney Research Report No.R611,1990:331-346.
• [4]钱琨,王新志,陈剑文.南海岛礁吹填钙质砂渗透特性试验研究[J].岩土力学,2017,38(6):1-8.QIAN Kun,WANG Xinzhi,CHEN Jianwen,et al.Experimental study on permeability of calcareous sand for islands in the South China Sea[J].Rock and Soil Mechanics,2017,38(6):1-8.
• [5]袁晓铭,李瑞山,孙锐.新一代土层地震反应分析方法[J].土木工程学报,2016(10):95-102.Yuan Xiaoming,Li Ruishan,Sun Rui.A new generation method for earthquake response analysis of soil layers[J].China Civil Engineering Journal,2016(10):95-102.
• [6]李青,徐中华,王卫东,等.上海典型黏土小应变剪切模量现场和室内试验研究[J].岩土力学,2016,37(11):3263-3269.LI Qing,XU Zhong-hua,WANG Wei-dong,et al.Field and laboratory measurements on shear modulus of typical Shanghai clay at small strain[J].Rock and Soil Mechanics,2016,37(11):3263-3269.
• [7]刘恩龙,沈珠江.人工制备结构性土力学特性试验研究[J].岩土力学,2007,28(4):679-683.Liu Enlong,Shen Zhujiang.Experimental study on mechanical properties of artificially structured soils[J].Rock and Soil Mechanics,2007,28(4):679-683.
• [8]周燕国.土结构性的剪切波速表征及对动力特性的影响[D].杭州:浙江大学,2007.Zhou Yanguo.Shear Wave Velocity-Based Characterization of Soil Structure and Its Effects on Dynamic Behavior[D].Hangzhou:Zhejiang University,2007.
• [9]Tokimatsu K,Yamazaki T,Yoshimi Y.Soil liquefaction evaluations by elastic shear moduli[J].Soils&Foundations,1986,26(1):25-35.
• [10]单华刚.珊瑚礁钙质土中桩基工程承载性状研究[D].武汉:中国科学院武汉岩土力学研究所,2000.Shan Huagang.Research on Bearing Behaviour of Pile in Calcareous Soil of Coral Reef[D].Wuhan:Institute of Rock and Soil Mechanics,The Chinese Academy of Science,2000.
• [11]汪云龙,曹振中,袁晓铭,等,基于弯曲元技术的无黏性土剪切波速与相对密度联合测试方法[J].岩石力学与工程学报,2016,35(S1):3418-3423.Wang Yunlong,Cao Zhenzhong,Yuan Xiaoming,et al.A testing method for shear-wave velocity and relative density of cohesionless soil using bending-element technique[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(S1):3418-3423.

文章评论(Comment)：