EPS外保温系统的力学分析和数值仿真  

Mechanical Analysis and Numerical Simulation of EPS External Thermal Insulating System

作　　者：张研[1] 蒋林华[1,2] 储洪强[1] 徐怡[1] 

机构地区：[1]河海大学力学与材料学院,江苏南京210098 [2]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098

出　　处：《建筑材料学报》2010年第4期478-482,共5页Journal of Building Materials

基　　金：国家自然科学基金资助项目(50808066;50978085);中央高校基本科研业务费专项资金资助项目(2009B14814);河海大学引进人才启动基金资助项目(20081204)

摘　　要：采用弹性损伤本构模型和参数,通过非线性有限元方法实现了EPS外保温系统黏结强度的原型结构仿真,并对改进材料性能和调整结构的EPS外保温系统进行了数值仿真与分析.研究发现,原型系统的数值分析结果与试验结果相一致,即原型系统的黏结强度无法达到国家强制要求;通过分析各因素的影响作用,改进系统的数值仿真给EPS外保温系统提出了采用锚固构件及砂浆抗拉强度为2.50MPa的优化方案,此时所得到的系统黏结强度可达0.48MPa.研究结果表明EPS外保温系统数值仿真可以有效运用于结构设计和材料选择.Based on the experimental result of EPS external thermal insulating system,an elastic damage constitutive model and its parameters were introduced.Numerical simulation of this system was presented by using the nonlinear finite element method.Analysis shows that the simulation of prototype is in good agreement with the experimental result and the present adhesive strength of this system can not meet the obligatory requirement.The simulation of advanced system analyses the influence of each factor and optimized project is presented finally.It has been shown that numerical simulation can be well used in the design of EPS external thermal insulating system and choice of materials.

关 键 词：EPS外保温系统 黏结强度 聚合物改性砂浆 本构模型 数值仿真 

分 类 号：TU973.2[建筑科学—结构工程]