阳台断桥构造在装配式钢结构住宅体系中的应用  

Balcony Thermal Bridge Insulation Technology in Prefabricated Steel Structure Residential Building

作　　者：张正庭 王亚斯 郑建敏 吴宏磊 ZHANG Zhengting;WANG Yasi;ZHENG Jianmin;WU Honglei(Shanghai Research Institute of Building Sciences Co.,Ltd.,Shanghai 201108,China;Longyuan Mingzhu Technology Co.,Ltd.,Shanghai 200336,China;Tongji Architectural Design(Group)Co.,Ltd.,Shanghai 200092,China)

机构地区：[1]上海市建筑科学研究院有限公司,上海201108 [2]龙元明筑科技有限责任公司,上海200336 [3]同济大学建筑设计研究院(集团)有限公司,上海200092

出　　处：《施工技术（中英文）》2021年第14期122-124,共3页Construction Technology

基　　金：住房和城乡建设部科技计划项目:钢结构被动式超低能耗住宅建筑体系及关键技术研究(2019-K-091)。

摘　　要：基于被动房结构断桥设计理念,提出一种适宜装配式钢结构住宅体系应用的阳台断桥构造。通过理论计算和现场检测综合评估,对比分析常规阳台做法和考虑阳台断桥做法的热桥分布及热损失情况,验证通过断桥技术优化后是否可实现较良好的热桥阻隔目标。结果显示,采用阳台结构断桥设计,阳台板与主体结构连接部位和周边温差均<1.0℃,无明显热工缺陷;相较于常规阳台板做法,在冬季工况条件下,热桥线传热系数可降低23%,热桥阻断效果良好。Based on the design concept of broken bridge of passive house structure,a balcony broken bridge structure suitable for the application of prefabricated steel structure residential system is proposed.Through the comprehensive evaluation of theoretical calculation and on-site detection,the thermal bridge distribution and heat loss of the conventional balcony method and the balcony broken bridge method are compared and analyzed to verify whether the better thermal bridge barrier target can be achieved after the broken bridge technology is optimized.The results show that the temperature difference between the connection part of the balcony and the main structure and the surrounding area is less than 1.0 ℃,and there is no obvious thermal defects.Compared with the conventional balcony slab method,the heat transfer coefficient of the thermal bridge line can be reduced by 23% in winter,and the blocking effect of the thermal bridge is good.

关 键 词：钢结构 装配式 住宅 阳台 断桥 检测 

分 类 号：TU391[建筑科学—结构工程]