工程地质学报2017，Vol.25Issue(3)：671-677,7.DOI:10.13544/j.cnki.jeg.2017.03.012
岩溶桩基振动台试验中岩体相似材料的配比研究
EXPERIMENT STUDY ON SIMILARITY RATIO OF SIMILAR MATERIAL OF ROCK MASS FOR SHAKING TABLE TEST OF PILE IN KARST REGION
摘要
Abstract
Shaking table test is an effective method to study the effect of seismic conditions on engineering practice at present.The selection of appropriate material ratio is the key to successful simulation of the prototype project.Based on Zhoujiawan Bridge of the Chongqing-Guizhou high-speed railway,the orthogonal test is used to study the rock material according to the separation similar design method and secondary refinement test.In this study,barite powder,quartz sand,iron powder,gypsum and rosin alcohol solution are used as proportion materials.The rock mass density,gravity acceleration and geometrical size are regarded as control indexes.By the method of extreme difference analysis,the influence of material contend of model test on simulating the main parameters of rock is studied.Then the second test for refining the analysis and determining the final material mix is conducted.The results show the follows.(1) The proportion of materials affects the main parameters such as deformation modulus,cohesion and internal friction angle on different emphasis and different degrees.(2)The similarity design method can be used to select the main parameters of each component in the similar test.The orthogonal test and the secondary refinement test can quickly and efficiently design and test the main parameters.Finally the parameters are obtained to meet the requirements of the model test.关键词
振动台试验/分离相似设计方法/正交试验/二次试验Key words
Shaking table test/Separation similarity design method/Orthogonal experiment/Secondary Experiment分类
天文与地球科学引用本文复制引用
江松,黄明,付俊杰,张光武..岩溶桩基振动台试验中岩体相似材料的配比研究[J].工程地质学报,2017,25(3):671-677,7.基金项目
国家自然科学基金(41672290),福建省自然科学基金(2016J01189)资助. （41672290）
