Seismic shaking table test for large-scale underground cavern group (Ⅱ):Test scheme

LIU Xiao-min; SHENG Qian; CHEN Jian; KE Wen-hui; YANG Ji-hua

doi:10.16285/j.rsm.2015.06.021

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Seismic shaking table test for large-scale underground cavern group (Ⅱ):Test scheme

更新时间：2026-06-25

- Seismic shaking table test for large-scale underground cavern group (Ⅱ):Test scheme
- Vol. 36, Issue 6, Pages: 1683-1690(2015)
- 作者机构：
  
  1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北,武汉,430071
  2. 中国建筑第六工程局有限公司,天津,300451
  3. 黄河勘测规划设计有限公司,河南,郑州,450003
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2015.06.021
  CLC： TU452
- Online First：14 June 2018，
  
  Published：2015
- 稿件说明：
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LIU Xiao-min, SHENG Qian, CHEN Jian, et al. Seismic shaking table test for large-scale underground cavern group (Ⅱ):Test scheme[J]. 2015, 36(6): 1683-1690.
DOI：

LIU Xiao-min, SHENG Qian, CHEN Jian, et al. Seismic shaking table test for large-scale underground cavern group (Ⅱ):Test scheme[J]. 2015, 36(6): 1683-1690. DOI： 10.16285/j.rsm.2015.06.021.

摘要

为了解大型地下洞室群在地震过程中的动态响应特征，以大渡河流域的大岗山水电站大型地下洞室群为原型，开展地震模拟振动台物理模型试验研究。作为国内外首次进行此类振动台试验研究，系统介绍整个试验的方案设计。首先，根据本次试验的目的和特性，给出试验基本简化原则，并对模型体系进行相似设计，按照完全相似模型推导出各物理量的动力相似常数、确定模拟范围、模型尺寸和相似材料配比。然后，对试验边界条件进行设计，确定了作为柔性边界的聚苯乙烯泡沫板的材料和几何参数，制作了用于测量围岩内部应力的应变砖传感器，并介绍模型制作、洞室成型与开挖等工艺步骤；最后，确定试验输入波形，并按相似理论要求进行调整，给出模型试验的加载工况。经后期试验数据的分析，证明试验条件简化合理，模型设计与制作成功。一整套模型设计方法与制作工艺，可供今后类似试验作为参考。

Abstract

In order to study the dynamic response of the large-scale underground cavern group during earthquakes，the large-scale underground cavern group of the Dagangshan hydropower is selected as the prototype to conduct the shaking table test. Being the first shaking table test on such field of research

the entire design of the experiment is given in detail. Firstly，basic simplified principles of the test，dynamic similar parameters derived by absolute similarity theory，simulation range

model dimensions and similar material ratio are given according to the objects and features of the test. Then，test boundary conditions and measurement system are designed. Polystyrene foam board is used as a flexible boundary and its material and geometric parameters are suggested. Strain brick sensors for measuring the internal stress of the surrounding rock are manufactured. Model making process

cavern forming and excavation are presented. Finally，input waveforms are elected and adjusted according to the similarity theory

and loading subsequence of the model test is given. Test data demonstrate that simplification of test conditions is reasonable

and the design and production of test model are successful

it can provide a guide for similar model designing and making.

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