混凝土应变率效应综述  

The State-of-the-art of Concrete Strain Rate Effect

作　　者：牛海英[1] 李国一[1] 于林平[1] 

机构地区：[1]大连海洋大学海洋与土木工程学院,辽宁大连116023

出　　处：《大连大学学报》2016年第6期11-14,20,共5页Journal of Dalian University

摘　　要：混凝土材料是一种率敏感性材料,近年来,国内外对混凝土材料在动荷载下的力学性能研究取得了显著进展。在总结相关国内外文献的基础上,分析了应变率对混凝土抗压强度、抗拉强度、弹性模量、临界应变和泊松比的影响。同时从理论分析的角度指出了惯性力对混凝土材料动强度的影响程度。最后指出了目前混凝土材料率效应研究工作存在的问题,对未来发展趋势进行了展望。Rate of concrete material is a kind of sensitive material, m recent years, at home ano aoroao on me mechanical property of concrete material under dynamic load research has made significant progress. On the basis of summarizing the related literature at home and abroad, the variety relationship between the strain rate and concrete compressive strength, tensile strength, elastic modulus, the influence of critical strain and poisons＇ rate was analyzed. At the same time, from the view of theoretical analysis, the influence extent on dynamic stress of concrete materials by the inertia force was also pointed out. Finally the problems existing in the study of the rate of concrete materials were pointed out. And the future development trend is prospected.

关 键 词：应变率 抗压强度 抗拉强度 弹性模量 泊松比 临界应变 

分 类 号：TU528[建筑科学—建筑技术科学]