模型试验的分离相似设计方法——以锚索格构加固边坡模型试验为例

发布时间：2018-06-04 10:47

本文选题：分离相似设计方法 + 土-结构相互作用　；参考：《岩土力学》2016年09期

【摘要】：提出了模型试验的分离相似设计方法,以锚索、格构梁加固边坡振动台试验为例进行介绍。将传统量纲分析法中描述振动台试验各个相关参数之间关系的函数关系式定义为1级特征方程。根据边坡、锚索、格构和地震波特性的不同,将1级特征方程进行分离处理,得到分别用于边坡、锚索、格构和地震波相似设计的2级特征方程。根据每个2级特征方程中参数的重要程度不同,将关键设计参数从2级特征方程中分离出来,组成3级特征方程。根据3级、2级和1级特征方程可以分别推导得到针对边坡、锚索、格构梁和地震波各自的关键参数、相关参数和无关参数相似比,选择关键参数相似比作为模型设计的主要依据,并对试验模型进行了相似设计。解决了按照传统量纲分析法要求,模型试验无法同时满足所有参数相似比要求的问题。
[Abstract]:A separate similarity design method for model test is presented, and an example of shaking table test for reinforcement of slope with anchor cable and lattice beam is introduced. This paper defines the function relation of the traditional dimensionality analysis method which describes the relation between the parameters of the shaking table test as the first order characteristic equation. According to the different characteristics of slope, anchor cable, lattice and seismic wave, the one-order characteristic equation is separated and treated, and the two-order characteristic equation is obtained for the similar design of slope, anchor cable, lattice structure and seismic wave, respectively. According to the different importance of the parameters in each two-order characteristic equation, the key design parameters are separated from the two-order characteristic equation to form the third-order characteristic equation. According to the characteristic equations of stage 2 and order 1, the similarity ratios of key parameters, correlation parameters and independent parameters for slope, anchor cable, lattice beam and seismic wave can be derived, respectively. The similarity ratio of key parameters is chosen as the main basis of model design, and the similarity design of test model is carried out. According to the requirement of traditional dimensional analysis, the model test can not satisfy the requirement of similarity ratio of all parameters at the same time.
【作者单位】：西南交通大学土木工程学院;海南大学土木建筑工程学院;中国电建集团华东勘测设计研究院有限公司;核工业西南勘察设计研究院有限公司;
【基金】：国防基础科研计划(No.B0220133003) 中国水电顾问集团公司重大科技项目(No.KY2012-01-02-02-W6)~~
【分类号】：TU476

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