岩体物理模型试验中考虑浇筑方式的应变砖测量影响研究#br#

金属矿山 ›› 2025, Vol. 54 ›› Issue (10): 49-57.

岩体物理模型试验中考虑浇筑方式的应变砖测量影响研究#br#

袁晨玮^1,2　卢景景³　姜　玥^1,3　肖建成³　邹文栋¹　崔　健³　齐资源³

1. 苏州科技大学土木工程学院,江苏苏州 215009;2. 中国铁路上海局集团有限公司杭州工务段,浙江杭州 310009;
3. 中国科学院武汉岩土力学研究所,湖北武汉 430071

出版日期:2025-10-15 发布日期:2025-11-04
通讯作者: 姜　玥(1993—),女,副教授,博士。
作者简介:袁晨玮(2000—),男,硕士研究生。
基金资助:
国家自然科学基金项目(编号:42102307);江苏省研究生科研与实践创新计划(编号:SJCX24_1939)。

Study on the Influence of Strain Brick Measurement Considering Pouring Method in Rock Mass Physical Model Test#br#

YUAN Chenwei^1,2　LU Jingjing³　JIANG Yue^1,3　XIAO Jiancheng³　ZOU Wendong¹　CUI Jian³　QI Ziyuan³

1. School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215009,China;
2. Hangzhou Engineering Section of China Railway Shanghai Group Co. ,Ltd. ,Hangzhou 310009,China;
3. Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China

Online:2025-10-15 Published:2025-11-04

摘要/Abstract

摘要： 岩体物理模型试验因其能够直观再现工程破坏过程而在岩体工程稳定性研究中得到广泛应用。应变
砖法作为监测围岩内部应变的重要手段,其测量的准确性和可靠性尤为重要。为探究浇筑方式对应变砖应力应变特
性及测量精度的影响,明晰其微观作用机制,采用室内试验与数值模拟相结合的方法,系统分析直接浇筑和依托混凝
土板浇筑2 种方式下试样的应变、应力及破坏特征,揭示接触缝与接触面对应变砖及试样的作用机理。结果表明:轴
向应力作用下,直接浇筑产生的接触缝会导致两侧试样错动,使应变砖轴向测量数据偏大且易损坏;依托混凝土板浇
筑的试样受板体约束显著,应力、应变均偏小,且随混凝土板养护时长增加,后浇混凝土与板体粘结力减弱,承载能力
明显降低;材料非均质性会增加应变传递不确定性,接触缝宽度与深度及温度和湿度的变化均会降低应变砖测量精
度。综合分析,直接浇筑方式下,应变砖测量方法适用于低水平加载状态下的测量;以养护8 d 的预浇混凝土板为基
准板的浇筑方式下,应变砖测量方法适用于高水平加载状态下的测量。研究可为岩体物理模型试验中的岩石内部状
态测量提供指导。

关键词: 物理模型试验　浇筑方式　应变砖测量　接触缝

Abstract: Rock mass physical model test is widely used in the study of rock mass engineering stability because it can
visually reproduce the engineering failure process. As an important means to monitor the internal strain of surrounding rock,the
accuracy and reliability of strain brick method are particularly important. In order to explore the influence of pouring method on
the stress-strain characteristics and measurement accuracy of strain bricks,and clarify its microscopic mechanism,the strain,
stress and failure characteristics of specimens under direct pouring and concrete slab pouring were systematically analyzed by
combining laboratory test with numerical simulation,and the mechanism of contact seam and contact surface on strain bricks
and specimens was revealed. The results show that under the action of axial stress,the contact seam generated by direct pouring
will lead to the dislocation of the samples on both sides,which makes the axial measurement data of the strain brick too large
and easy to damage. The specimens poured on the concrete slab are significantly constrained by the slab body,and the stress
and strain are small. With the increase of the curing time of the concrete slab,the bonding force between the post-cast concrete
and the slab body is weakened,and the bearing capacity is obviously reduced. Material heterogeneity will increase the uncertainty
of strain transfer,and the change of contact seam width and depth,temperature and humidity will reduce the measurement
accuracy of strain brick. Comprehensive analysis,under the direct pouring method,the strain brick measurement method is suitable
for the measurement under low-level loading. The strain brick measurement method is suitable for the measurement under
high-level loading conditions when the pre-cast concrete slab with 8 d curing is used as the reference slab. The research can
provide guidance for the measurement of rock internal state in rock mass physical model test.

Key words: physical model test,pouring method,strain brick measurement,contact joints

中图分类号:

TU-45

袁晨玮, 　卢景景　姜　玥, 　肖建成　邹文栋　崔　健　齐资源. 岩体物理模型试验中考虑浇筑方式的应变砖测量影响研究#br#[J]. 金属矿山, 2025, 54(10): 49-57.

YUAN Chenwei, 　LU Jingjing　JIANG Yue, 　XIAO Jiancheng　ZOU Wendong　CUI Jian　QI Ziyuan. Study on the Influence of Strain Brick Measurement Considering Pouring Method in Rock Mass Physical Model Test#br#[J]. Metal Mine, 2025, 54(10): 49-57.

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