早龄期混凝土砖墙体收缩变形的数值模拟分析实例  

Numerical Simulation Analysis of CPB Wall Shinkage At early Ages

作　　者：傅军[1,2] 金伟良[1] 崔旸[2] 孙欣[2] 岳增国[1] 

机构地区：[1]浙江大学结构工程研究所,杭州310027 [2]浙江理工大学,杭州310018

出　　处：《墙材革新与建筑节能》2008年第11期27-31,共5页Construction Wall Innovation & Building Energy-Saving

基　　金：杭州市科技重点项目(2005333);浙江省教育厅项目(20070383)

摘　　要：结合试验实例的数据,对早龄期混凝土砖上墙时的收缩变形规律进行有限元数值模拟分析。结果表明:采用数值模拟计算早龄期混凝土砖墙体的总体位移和变形是可行的,但是计算内部应变与实测值有较大的差异;早龄期混凝土砖材性不稳定,收缩变形表现出"初始变化大,后期趋于稳定"的规律。As to study the shrinkage distortion feature of CPB wall at early ages, FEM analysis is carried out using experimental data. Including: creating model, defining constitutive-relation, selecting parameters, determining loads and solution strategy. Results proved it is feasible to simulate total displacement and distortion, but the calculated local strain is different from test value. By simulation and experiment, It can be known the early-age CPB wall has a unstable material property, Its shrinkage seems 'vary severe at begin- ning but become stable afterwards'.

关 键 词：早龄期 混凝土砖 墙体 收缩变形 ANSYS有限元软件 数值模拟 

分 类 号：TU362[建筑科学—结构工程]