钢筋-次轻混凝土粘结性能细观分析建模方法研究  

Study on the Modeling Method for Mesoscopic Numerical Simulation of Bond Behavior Between Bars and Semi-Lightweight Concrete

作　　者：张燕坤 黄安 王翔 吴海英 ZHANG Yankun;HUANG An;WANG Xiang;WU Haiying(School of Civil Engineering,North China Univ.of Tech.,100144,Beijing,China;Hefei Cement Research & Design Institute Co.,Ltd.,230051,Hefei,China;GuiZhou Yuan Feng Heng Engineering Co.,Ltd.,550009,Guiyang,China;Ordos Vocationa College,017000,Ordos,China)

机构地区：[1]北方工业大学土木工程学院,北京100144 [2]合肥水泥研究设计院有限公司,合肥230051 [3]贵州沅丰恒工程有限公司,贵阳550009 [4]鄂尔多斯职业学院,鄂尔多斯017000

出　　处：《北方工业大学学报》2019年第2期98-102,共5页Journal of North China University of Technology

基　　金：北京市自然科学基金“改性植物纤维对高温下复合保温混凝土性能的影响及其机理研究”(2172021)

摘　　要：为实现钢筋与次轻混凝土粘结性能的细观数值模拟,本文基于随机骨料模型提出了一种带肋钢筋与次轻混凝土粘结性能细观数值模拟的建模方法.首先通过富勒级配曲线和瓦拉文公式确定骨料的粒径分布,然后计算骨料颗粒数,运用蒙特卡罗方法实现普通骨料和轻骨料的随机投放,生成次轻混凝土随机骨料模型.在上述分析的基础上采用ANSYS有限元结构分析软件自带的参数化设计语言(APDL)建立了钢筋与次轻混凝土单端拉拔试件的二维平面分析模型,验证了该建模方法的有效性.In order to realize the mesoscopic numerical simulation of the bond behavior between bars and semi-lightweight concrete,this paper came up with a modeling method for mesoscopic numerical simulation method of bond behavior between ribbed bars and semi-lightweight concrete based on the random aggregate model( RAM). First,the size distribution of coarse aggregate is determined based on the Fuller grading curve and the Walraven formula,then the number of aggregate particles is calculated. Second,the random distribution of normal aggregate and lightweight aggregate is performed with the Monte-Carlo method,and the random aggregate model of semi-lightweight concrete is built. Third,the plane model of specimens for single-ended pullout test between bars and semi-lightweight concrete is built with the ANSYS parametric design language( APDL). Finally,the validity of this method is verified.

关 键 词：骨料级配理论 蒙特卡罗方法 随机骨料模型 次轻混凝土 细观分析 

分 类 号：TU377.1[建筑科学—结构工程]