基于率相关内聚力本构模型的混凝土细观单轴受拉性能

doi:10.12068/j.issn.1005-3026.2023.11.018

东北大学学报（自然科学版） ›› 2023, Vol. 44 ›› Issue (11): 1647-1655.DOI: 10.12068/j.issn.1005-3026.2023.11.018

基于率相关内聚力本构模型的混凝土细观单轴受拉性能

肖诗云，王杨

(大连理工大学建设工程学院，辽宁大连 116024)

发布日期:2023-12-05
通讯作者: 肖诗云
作者简介:肖诗云(1973-)，男，湖南澧县人，大连理工大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51878113).

Mesoscopic Uniaxial Tensile Properties of Concrete Based on Rate-Dependent Cohesive Constitutive Model

XIAO Shi-yun， WANG Yang

School of Infrastructure Engineering， Dalian University of Technology， Dalian 116024， China.

Published:2023-12-05
Contact: XIAO Shi-yun
About author:-
Supported by:
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摘要/Abstract

摘要： 混凝土宏观率相关效应研究已经取得了十分丰富的成果，其细观结构和材料参数显著影响混凝土宏观力学性能，因此，从细观尺度研究混凝土动态性能是揭示混凝土宏观率相关效应的重要途径.本文引入应变率影响，修正界面内聚力本构模型，从细观尺度研究了不同骨料含量和骨料形状的混凝土在不同加载速率下的单轴抗拉破坏模式和力学特性.分析结果表明:随着加载速率增加，混凝土破坏裂缝分布更加均匀；混凝土抗拉强度的增量与应变率的对数呈线性关系；混凝土抗拉强度随骨料含量增加近似线性减小，但骨料形状对其影响很小.

关键词: 混凝土；内聚力本构模型；加载速率；随机骨料模型；单轴受拉

Abstract: The research on macroscopic rate-dependence of concrete has achieved very rich results， and its meso structural and material parameters significantly affect the macroscopic mechanical properties of concrete. Therefore， studying the dynamic properties of concrete at the meso-scale is an important way to reveal the macroscopic rate-dependence of concrete. In this paper， the influence of strain rate was introduced to modify the interfacial cohesion constitutive model， and the uniaxial tensile failure mode and mechanical properties of concrete with different aggregate content and shapes were studied under various loading rates from the mesoscale. The results show that the distribution of failure cracks becomes increasingly uniform with the increase of loading rate. The increment in tensile strength of concrete exhibits a linear relationship with the logarithm of strain rate. The tensile strength of concrete decreases linearly with an increase in aggregate content， while the aggregate shape has little effect on it.

Key words: concrete; cohesive constitutive model; loading rate; random aggregate model; uniaxial tension

中图分类号:

TU528.1

肖诗云，王杨. 基于率相关内聚力本构模型的混凝土细观单轴受拉性能[J]. 东北大学学报（自然科学版）, 2023, 44(11): 1647-1655.

XIAO Shi-yun， WANG Yang. Mesoscopic Uniaxial Tensile Properties of Concrete Based on Rate-Dependent Cohesive Constitutive Model[J]. Journal of Northeastern University(Natural Science), 2023, 44(11): 1647-1655.

参考文献

[1]Bischoff P H，Perry S H.Impact behavior of plain concrete loaded in uniaxial compression［J］.Journal of Engineering Mechanics，1995，121(6):685-693.
[2]Malvar L J，Ross C A.Review of strain rate effects for concrete in tension［J］.ACI Materials Journal，1998，95(6):735-739.
[3]肖诗云，林皋，王哲，等.应变率对混凝土抗拉特性影响［J］.大连理工大学学报，2001，41(6):721-725.(Xiao Shi-yun，Lin Gao，Wang Zhe，et al.Effects of strain rate on dynamic behavior of concrete in tension［J］.Journal of Dalian University of Technology，2001，41(6):721-725.)
[4]Yan D M，Liu K H，Fan L F，et al.An experimental investigation of pre-loading effects on the dynamic behaviour of concrete［J］.Magazine of Concrete Research，2017，69(11):586-594.
[5]宁建国，商霖，孙远翔.混凝土材料动态性能的经验公式、强度理论与唯象本构模型［J］.力学进展，2006，36(3):389-405.(Ning Jian-guo，Shang Lin，Sun Yuan-xiang.The developments of dynamic constitutive behavior of concrete［J］.Advances in Mechanics，2006，36(3):389-405.)
[6]牛海英，李国一，于林平.混凝土应变率效应综述［J］.大连大学学报，2016，37(6):11-14.(Niu Hai-ying，Li Guo-yi，Yu Lin-ping.The state-of-the-art of concrete strain rate effect［J］.Journal of Dalian University，2016，37(6):11-14.)
[7]李忠献，刘泽锋.混凝土动态本构模型综述［J］.天津大学学报(自然科学与工程技术版)，2015，48(10):853-863.(Li Zhong-xian，Liu Ze-feng.Review of concrete dynamic constitutive model［J］.Journal of Tianjin University(Science and Technology)，2015，48(10):853-863.)
[8]Wittmann F H，Roelfstra P E，Sadouki H.Simulation and analysis of composite structures［J］.Materials Science and Engineering，1985，68(2):239-248.
[9]Cundall P A，Strack O D L.A discrete numerrical model for granular assemblies［J］.Geotechnique，1979，29(1):47-65.
[10]Mohamed A R，Hansen W.Micromechanical modeling of crack-aggregate interaction in concrete materials［J］.Cement and Concrete Composites，1999，21(5/6):349-359.
[11]Mohamed A R，Hansen W.Micromechanical modeling of concrete response under static loading—part 1:model development and validation［J］.ACI Materials Journal，1999，96(2):196-203.
[12]Mohamed A R，Hansen W.Micromechanical modeling of concrete response under static loading—part II:model predictions for shear and compressive loading［J］.ACI Materials Journal，1999，96(3):354-358.
[13]Zhu W C，Tang C A.Numerical simulation on shear fracture process of concrete using mesoscopic mechanical model［J］.Construction and Building Materials，2002，16(8):453-463.
[14]Zhu W C，Teng J G，Tang C A.Mesomechanical model for concrete.part I:model development［J］.Magazine of Concrete Research，2004，56(6):313-330.
[15]Kwan A K H，Wang Z M，Chan H C.Mesoscopic study of concrete II:nonlinear finite element analysis［J］.Computers & Structures，1999，70(5):545-556.
[16]Wang Z M，Kwan A K H，Chan H C.Mesoscopic study of concrete I:generation of random aggregate structure and finite element mesh［J］.Computers & Structures，1999，70(5):533-544.
[17]刘宝琛，伍小平.细观力学实验技术综述［J］.实验力学，1992，7(1):1-10.(Liu Bao-chen，Wu Xiao-ping.A brief review on experimental techniques of mesomechanics［J］.Journal of Experimental Mechanics，1992，7(1):1-10.)
[18]张楚汉，唐欣薇，周元德，等.混凝土细观力学研究进展综述［J］.水力发电学报，2015，34(12):1-18.(Zhang Chu-han，Tang Xin-wei，Zhou Yuan-de，et al.State-of-the-art of literature review on concrete meso-scale mechanics［J］.Journal of Hydroelectric Engineering，2015，34(12):1-18.)
[19]单智，方联民，高晶.混凝土力学性能及其细观力学机理研究综述［J］.混凝土，2015，7(7):11-17.(Shan Zhi，Fang Lian-min，Gao Jing.Review of studies on mechanical property and micro mechanism of concrete［J］.Concrete，2015，7(7):11-17.)

基于率相关内聚力本构模型的混凝土细观单轴受拉性能

Mesoscopic Uniaxial Tensile Properties of Concrete Based on Rate-Dependent Cohesive Constitutive Model

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