[1]丁晓燕,罗永磊,陈忠范,等.严寒地区基于热工和力学性能的混凝土自保温砌块设计及优化[J].东南大学学报(自然科学版),2015,45(1):145-150.[doi:10.3969/j.issn.1001-0505.2015.01.026]
 Ding Xiaoyan,Luo Yonglei,Chen Zhongfan,et al.Self-insulation concrete block design and optimization based on thermal and mechanical properties in cold regions[J].Journal of Southeast University (Natural Science Edition),2015,45(1):145-150.[doi:10.3969/j.issn.1001-0505.2015.01.026]
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严寒地区基于热工和力学性能的混凝土自保温砌块设计及优化()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第1期
页码:
145-150
栏目:
材料科学与工程
出版日期:
2015-01-20

文章信息/Info

Title:
Self-insulation concrete block design and optimization based on thermal and mechanical properties in cold regions
作者:
丁晓燕罗永磊陈忠范徐明
东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096
Author(s):
Ding Xiaoyan Luo Yonglei Chen Zhongfan Xu Ming
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
自保温砌块 热工性能 力学性能 ANSYS 优化分析
Keywords:
self-insulation concrete block thermal property mechanical properties ANSYS optimization design
分类号:
TU522.3
DOI:
10.3969/j.issn.1001-0505.2015.01.026
摘要:
设计了一种墙厚280 mm、满足东北严寒地区节能要求的混凝土自保温砌块.首先,分析了影响混凝土自保温砌块保温及受力性能的主要指标;其次,基于规范对砌块块形的相关要求,设计了15种自保温砌块块形;然后,利用ANSYS有限元分析软件,求解这15种砌块的传热系数和抗压强度;最后,运用多目标性能优化方法对砌块热工性能、力学性能和容重进行综合优化,得出最佳块形,并对其进行二次热工性能、力学性能优化,以得到最终最优块形.结果表明:最终最优块形的传热系数为0.350 W/(m2·K),毛截面抗压强度为6.50 MPa,横肋与竖肋应力相近,自保温砌块受力更加合理;在空心率相同的前提下,自保温层宜采用非均匀排列,近冷热源两侧端面的保温层越厚,砌块保温节能效果越好.
Abstract:
A self-insulation concrete block(SICB)with the thickness of 280 mm meeting the energy-saving standard in northeast cold regions is designed. First, the main influential indices of thermal and mechanical properties of SICB are analyzed. Then, 15 types of SICB are designed according to the criterion of block shape. Their heat transfer coefficients and compressive strengths are calculated by using the ANSYS finite element software. Finally, the multi-objective optimization method is used to comprehensively optimize the thermal property, mechanical property and density, and the best block type is obtained. The mechanical and thermal properties of the best block type are optimized again to obtain the final best block type. The results show that the heat transfer coefficient of the final best block type is 0.350 W/(m2·K)and the compressive strength of the gross section is 6.50 MPa. The stiffness of the transverse rib is similar to that of the vertical rib. The load-bearing capacity of the SICB becomes more reasonable. In the premise of the same hollow rate, it is appropriate to use non-uniform arrangement. The thicker the insulation layer near the hot and cold heat source end face on both sides, the better the energy-saving and insulation effect.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2014-06-15.
作者简介: 丁晓燕(1982—),女,博士生;陈忠范(联系人),男,博士,教授,博士生导师,zfchen@seu.edu.cn.
基金项目: “十二五”国家科技支撑计划资助项目(2011BAJ08B04)、江苏省普通高校研究生科研创新计划资助项目(3205004905).
引用本文: 丁晓燕,罗永磊,陈忠范,等.严寒地区基于热工和力学性能的混凝土自保温砌块设计及优化[J].东南大学学报:自然科学版,2015,45(1):145-150. [doi:10.3969/j.issn.1001-0505.2015.01.026]
更新日期/Last Update: 2015-01-20