含水状态对建筑材料强度演化研究及损伤建模  

Study on Strength Evolution and Damage Modeling of Building Materials under Water States

作　　者：刘韡 韩邹红 邵珠山[1,2] 陈浩哲 Liu Wei;Han Zouhong;Shao Zhushan;Chen Haozhe(Xi’an University of Architecture and Technology,Xi’an,710055,Shaanxi;Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering,Xi’an,710055,Shaanxi)

机构地区：[1]西安建筑科技大学,陕西西安710055 [2]陕西省岩土与地下空间工程重点实验室,陕西西安710055

出　　处：《建设科技》2022年第12期109-113,共5页Construction Science and Technology

基　　金：国家自然科学基金(11872287);陕西省重点研发计划(2019ZDLGY01-10)。

摘　　要：为了探究含水状态对建筑材料强度的影响,以常见硬岩——花岗岩为例,进行了力学试验与数值模拟,分析了其损伤演化规律,建立了建筑材料的损伤本构模型。研究结果表明,建筑材料的含水量与试样声发射累积能量呈负相关,与声发射累积事件呈正相关;建筑材料的含水率与其破坏模式无关,均为剪切破坏模式;建立损伤本构模型,得出选取损伤比例系数为1时,试验、数值模拟和理论所得损伤本构模型较为理想。该研究对于建筑材料的稳定性具有一定的参考价值。In order to explore the influence of water states on the strength of building materials,taking the common hard rock--granite as an example,the mechanical test and numerical simulation are carried out,the damage evolution law is analyzed,and the damage constitutive model of building materials is established.The results show that the water content of building materials has a negative correlation with the cumulative energy of acoustic emission and a positive correlation with the cumulative events of acoustic emission.The moisture content of building materials has nothing to do with its failure model,which is shear failure mode.The damage constitutive model is established,and it is concluded that the damage constitutive model obtained from experiment,numerical simulation and theory is ideal when the damage ratio coefficient is 1.This study has certain reference for the stability research of building materials.

关 键 词：建筑材料 含水率 损伤模型 损伤演化 

分 类 号：TU50[建筑科学—建筑技术科学]