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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

39卷

期数:

2022年01期

页码:

87-96

栏目:

混凝土结构

出版日期:

2022-02-15

文章信息/Info

Title:

Thermal Performance Research and Optimal Design of Concrete Self-insulation Compound Block

文章编号:

1673-2049(2022)01-0087-10

作者:

隋学敏¹,龚书宽^1,2,徐 彪¹,黄 华¹

(1.长安大学 建筑工程学院,陕西 西安 710061; 2. 中信建筑设计研究总院有限公司,湖北 武汉 430014)

Author(s):

SUI Xue-min¹, GONG Shu-kuan^1,2, XU Biao¹, HUANG Hua¹

(1. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. CITIC General Institute of Architectural Design and Research Co., Ltd., Wuhan 430014, Hubei, China)

关键词:

自保温砌块;  热工性能;  数值模拟;  孔型优化;  传热系数

Keywords:

self-insulation block;  thermal performance;  numerical simulation;  hole pattern optimization;  heat transmission coefficient

分类号:

TU522.3

DOI:

10.19815/j.jace.2021.02011

文献标志码:

A

摘要:

针对寒冷地区住宅建筑墙体保温的需求,设计了7种混凝土复合自保温砌块方案,采用有限元分析软件ANSYS对砌块传热过程进行数值分析,对比相同孔洞率条件下不同孔型分布方案对自保温砌块热阻的影响; 根据影响规律对砌块热工性能进行优化研究,提出了交错排列三排孔、采用填充保温材料的孔洞隔断砌块边壁热流、孔洞外厚内窄的砌块优化设计方案。结果表明:孔洞排数的增加使得砌块导热热阻增大,孔洞列数的增加使得砌块导热热阻降低; 交错排列的孔洞可以较好地提高砌块的导热热阻; 外侧孔洞与内侧孔洞的厚度比例宜选择1.6～2.0; 优化后自保温砌块的导热热阻达到2.37 m²·K·W^-1,当量导热系数为0.118 W·m^-1·K^-1,抗压强度为8.7 MPa,满足自保温砌块用于外墙自承重墙体的设计要求; 采用该砌块砌筑的自保温墙体的传热系数为0.428 W·m^-2·K^-1,满足寒冷地区住宅建筑节能75%的设计标准,比采用相同材料和墙体厚度的外保温墙体的传热系数降低23%。

Abstract:

In response to the thermal insulation requirements of wall in residential buildings in cold zones, seven schemes of concrete self-insulation compound block were designed. The finite element analysis software ANSYS was used to simulate the heat transmission of block, and the effects of the distribution of holes on the thermal resistance of self-insulation blocks under the same porosity rate were compared. According to the influence characteristics, the thermal performance of the block was optimized, and an optimized design scheme for blocks with three rows of staggered columns holes which filled with thermal insulation materials to block the heat flow on the side walls of the block, and thick outside holes and narrow inside holes was proposed. The results show that the increase of the row number of holes makes the thermal resistance of the block increase, and the increase of the column number of holes makes the thermal resistance of the block decrease. The staggered column distribution of holes can better improve the thermal resistance of the block and the thickness ratio of the outer hole and the inner hole should be 1.6-2.0. The proposed thermal conduction resistance of the optimal self-insulation block reaches 2.37 m²·K·W^-1, the equivalent thermal conductivity is 0.118 W·m^-1·K^-1, and the compressive strength is 8.7 MPa. The compressive strength meets the design requirements of self-insulation blocks for external self-supporting walls. The heat transmission coefficient of the self-insulating wall built with this optimal block is 0.428 W·m^-2·K^-1, which meets the design standard of 75% energy saving for residential buildings in cold zones of China, and the heat transmission coefficient is reduced by 23% compared to the external thermal insulation walls with the same materials and wall thickness.

参考文献/References:

[1] LIU Y,YANG L,HOU L Q,et al.A Porous Building Approach for Modelling Flow and Heat Transfer Around and Inside an Isolated Building on Night Ventilation and Thermal Mass[J].Energy,2017,141:1914-1927.
[2]清华大学建筑节能研究中心.中国建筑节能年度发展研究报告2015[M].北京:中国建筑工业出版社,2015.
The Building Energy Conservation Research Center of Tsinghua University.Annual Report on Building Energy Efficiency in China 2015[M].Beijing:China Architecture & Building Press,2015.
[3]张磊蕾.我国自保温混凝土砌块的发展现状及研究方向[C]//崔琪.房建材料与绿色建筑.北京:中国建材工业出版社,2009:545-552.
ZHANG Lei-lei.The Development Status and Research Direction of Self-thermal Insulating Concrete Block of China[C]//CUI Qi.Housing Construction Materials and Green Buildings.Beijing:China Building Materials Press,2009:545-552.
[4]QIAN F.Insulation and Energy-saving Technology for the External Wall of Residential Building[J].Advanced Materials Research,2012,3702:1263-1270.
[5]VYTCHIKOV Y,SAPAREV M,CHULKOV A.Analyzing Screen Heat Insulation and Its Effect on Energy Consumption While Heating Building Envelopes in Conditions of Intermittent Heating[J].MATEC Web of Conferences,2016,86:04019.
[6]HU X J,WANG Y.Feasibility Analysis of Applying Thermal Insulation Composite Wall in Residential Buildings[J].Advanced Materials Research,2012,1649:293-296.
[7]AL-JABRI K S,HAGO A W,AL-NUAIMI A S,et al.Concrete Blocks for Thermal Insulation in Hot Climate[J].Cement and Concrete Research,2005,35(8):1472-1479.
[8]田斌守,章 岩,杨树新,等.节能65%目标与自保温混凝土砌块[J].混凝土与水泥制品,2008(1):49-52.
TIAN Bin-shou,ZHANG Yan,YANG Shu-xin,et al.Energy Saving 65% Target and Self-insulating Concrete Block[J].China Concrete and Cement Products,2008(1):49-52.
[9]金立虎.混凝土复合保温填充砌块及装饰保温贴面砌块生产与应用技术问答[M].北京:中国建材工业出版社,2015.
JIN Li-hu.Questions and Answers on Production and Application of Concrete Composite Thermal Insulation Filling and Decorative Thermal Insulation Veneer Blocks[M].Beijing:China Building Materials Press,2015.
[10]LI F L,CHEN G L,ZHANG Y Y,et al.Fundamental Properties and Thermal Transferability of Masonry Built by Autoclaved Aerated Concrete Self-insulation Blocks[J].Materials,2020,13(7):1680.
[11]YUN T S,JEONG Y J,HAN T S,et al.Evaluation of Thermal Conductivity for Thermally Insulated Concretes[J].Energy and Buildings,2013,61:125-132.
[12]QU X,ZHAO X.Previous and Present Investigations on the Components,Microstructure and Main Properties of Autoclaved Aerated Concrete — A Review[J].Construction and Building Materials,2017,135:505-516.
[13]王长宝,张茂亮,陈 闯,等.陶粒混凝土自保温砌块及其热工性能的研究[J].混凝土,2013(10):145-147,150.
WANG Chang-bao,ZHANG Mao-liang,CHEN Chuang,et al.Research on Thermal Insulating Performance of Ceramsite Concrete Self-insulation Blocks[J].Concrete,2013(10):145-147,150.
[14]蒋志平,张茂亮,陈 闯,等.陶粒混凝土轻质自保温砌块的研究[J].混凝土,2015(12):123-126.
JIANG Zhi-ping,ZHANG Mao-liang,CHEN Chuang,et al.Research on Ceramsite Concrete Lightweight Self-insulation Blocks[J].Concrete,2015(12):123-126.
[15]吴振江,张 库,张宝文.高保温的轻集料墙体砌块:CN201109959[P].2008-09-03.
WU Zhen-jiang,ZHANG Ku,ZHANG Bao-wen.High-insulation Lightweight Aggregate Wall Block:CN201109959[P].2008-09-03.
[16]吴 聪,刘福胜,范 军,等.工字型自保温混凝土夹心秸秆砌块墙体热工性能研究[J].混凝土,2015(6):127-130.
WU Cong,LIU Fu-sheng,FAN Jun,et al.Research on the Heat Transfer Performance of I-shaped Self-insulation Concrete Block Wall Filling with Compressed Blocks of Straw[J].Concrete,2015(6):127-130.
[17]民用建筑热工设计规范:GB 50176—2016[S].北京:中国建筑工业出版社,2017.
Code for Thermal Design of Civil Building:GB 50176—2016[S].Beijing:China Architecture & Building Press,2017.
[18]宋岩丽.寒冷地区节能65%与自保温砌块的研究[J].混凝土与水泥制品,2011(7):47-50.
SONG Yan-li.Research on Energy Saving by 65% and Self-thermal Insulation Blocks in Cold Regions[J].China Concrete and Cement Products,2011(7):47-50.
[19]田国华,缪正坤,季 翔,等.建筑垃圾复合保温砌块开发及性能试验研究[J].混凝土,2014(8):130-132,135.
TIAN Guo-hua,MIAO Zheng-kun,JI Xiang,et al.Development and Experimental Study on Properties of Compound Insulation Concrete Blocks Using Building Waste[J].Concrete,2014(8):130-132,135.
[20]梅毕祥,许 明,贾益纲,等.基于ANSYS的混凝土极限荷载影响因素分析[J].南昌工程学院学报,2009,28(1):35-40.
MEI Bi-xiang,XU Ming,JIA Yi-gang,et al.Analysis of Factors Affecting Ultimate Load of Concrete Based on ANSYS[J].Journal of Nanchang Institute of Technology 2009,28(1):35-40.
[21]杨召通.多排自保温混凝土复合砌块结构优化设计分析[D].西安:长安大学,2019.
YANG Zhao-tong.Optimum Design Analysis of Multi-row Self-insulating Concrete Composite Block Structure[D].Xi'an:Chang'an University,2019.

相似文献/References:

[1]习红军,赵登育.玻璃幕墙热工性能及节能研究[J].建筑科学与工程学报,2010,27(04):109.
　XI Hong-jun,ZHAO Deng-yu.Research on Thermal Performance and Energy-saving ofGlass Curtain Wall[J].Journal of Architecture and Civil Engineering,2010,27(01):109.

备注/Memo

备注/Memo:

收稿日期:2021-02-07
基金项目:国家自然科学基金项目(51708060); 西安市建设科技计划项目(SZJJ2019-02)
作者简介:隋学敏(1981-),女,山东东营人,副教授,工学博士,博士后,E-mail:suixuemin@163.com。

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更新日期/Last Update: 2021-02-10