摘要
目的研究强震作用下边坡模型与原型之间的相似关系,为材料配比试验和振动台试验提供相似依据,有利于实现振动台边坡试验动力响应特征。方法通过对相似三定律进行研究,以量纲分析法为主,分离相似设计和重力相似理论为辅,完善量纲分析法的不足,对参与模型试验的物理量进行分级定性。结果在静力相似设计中,以L、ρ、g作为控制量,将物理量分为关键参数、相关参数和无关参数,其中控制量L、ρ、g和关键参数τ、c、σ、φ的相似比分别为C_(L)=1000、C_(ρ)=1、C_(g)=1、C_(τ)=C_(c)=C_(σ)=1000、C_(φ)=1;在动力相似设计中,振动台输入的地震波需按时间相似比C_(t)=32进行压缩。结论基于相似理论分析,确定了贡扎滑坡相似设计关系和各物理量相似比,为顺利开展振动台试验打下基础。
In order to study the similar relationship between the slope model and the prototype under the action of strong earthquake provides a similar basis for the material ratio test and the shaking table test,which is conducive to the realization of the dynamic response characteristics of the shaking table slope test.Through the study of the three laws of similarity,the dimensional analysis method is the main method,and the separation of similar design and the gravitational similarity theory are supplemented to improve the deficiencies of the dimensional analysis method,and the physical quantities participating in the model test are classified and qualitatively determined.In the static similar design,L、ρ、g are used as the control variables,and the physical quantities are divided into key parameters,related parameters and irrelevant parameters.Among them,the control variables L、ρ、g and the key parametersτ、c、σ、φare similar The ratios are C_(L)=1000、C_(ρ)=1、C_(g)=1、C_(τ)=C_(c)=C_(σ)=1000、C_(φ)=1;in the dynamic similar design,the seismic wave input from the shaking table needs to be compressed according to the time similarity ratio C_(t)=32.Based on the analysis of similarity theory,the similar design relationship of Gonza landslide and the similarity ratio of various physical quantities are determined,which lays the foundation for smoothly carrying out the shaking table test.
作者
郭明珠
邹玉
孙海龙
GUO Mingzhu;ZOU Yu;SUN Hailong(Faculty of Architecture,Civil and Transportation Engineering,Beijing University of Technology,Beijing,China,100124)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2021年第4期594-601,共8页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家重点研发计划项目(2018YFC1505001)。
关键词
振动台试验
相似理论
量纲分析法
重力相似律
shaking table test
similarity
dimensional analysis method
gravity similarity law
作者简介
郭明珠(1963-),男,教授,博士,主要从事防灾减灾工程与防护工程等方面研究。
