Property estimation of free-field sand in 1-g shaking table tests  

作　　者：Xu Chengshun Jiang Zhiwei Du Xiuli Deng Lijun Li Zheng 

机构地区：[1]College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100124,China [2]National Engineering Research Center of Green&Safe Construction Technology in Urban Rail Transit,Beijing Urban Construction Design and Development Group Co.,Ltd.,Beijing 100037,China [3]Department of Civil Engineering,Tsinghua University,Beijing 100084,China [4]Department of Civil and Environmental Engineering,University of Alberta,Edmonton T6G2R3,Canada [5]UniversitéGustave Eiffel,Département GERS,Laboratoire Centrifugeuses Géotechniques(CG),Bouguenais 44341,France

出　　处：《Earthquake Engineering and Engineering Vibration》2022年第3期591-604,共14页地震工程与工程振动（英文刊）

基　　金：Supported by:National Natural Science Foundation of China under Grant Nos.52008233 and U1839201;the National Key Research and Development Program of China under Grant No.2018YFC1504305;the Innovative Research Groups of the National Natural Science Foundation of China under Grant No.51421005。

摘　　要：Experimental data taken from free-field soil in 1-g shaking table tests are valuable for seismic studies on soil-structure interaction.But the available data from medium-to large-scale shaking table tests were not abundant enough to cover a large variety of types and conditions of the soil.In the study,1-g shaking table tests of a 3-m-height sand column were conducted to provide seismic experimental data about sand.The sand was directly collected in-situ,with the largest grain diameter being 2 cm and containing a water content of 6.3%.Properties of the sand were estimated under the influence of white noise plus pulse and earthquake motions,including the settlement,the dynamic properties of the sand column,and the three soil layers′shear modulus degradation relationships.The estimated properties were then indirectly verified by means of finite element analysis.Results show that the estimated parameters were effective and could be used in numerical modeling to reproduce approximate seismic responses of the sand column.

关 键 词：1-g shaking table test seismic sand response dynamic soil properties free-field sand 

分 类 号：TU41[建筑科学—岩土工程]