轻骨料混凝土预制隔热构件的安全与节能技术（论文）.pdf

·231 · 轻骨料混凝土预制隔热构件的安全与节能技术 陈金月 1， 陈占虎 1， 刘立朋 2 （1. 河北三楷深发科技股份有限公司，051430，石家庄；2. 河北金铎建设工程有限公司，051430，石家庄） 摘　要： 为研究在现浇混凝土内置保温体系中用轻骨料混凝土隔热构件代替部分层间挑板处理热桥方法 的可行性，首先使用试验的方法验证了轻骨料混凝土隔热构件在层间挑板中的安全性，然后使用模拟的方法 计算该隔热构件的热工性能。结果表明：取石墨聚苯板的厚度为 250 mm，轻骨料混凝土预制隔热构件置于 挑板中间位置，并且长度为 150 mm，经试验分析，轻骨料混凝土预制隔热构件与混凝土组合悬臂构件挠度 为 0.02 mm，远小于挠度计算限值，且均未出现裂缝，安全性能满足要求；对比使用砂浆和真空板处理层间 挑板的热工性能，采用 DEST软件在满足被动式超低能耗建筑能效指标前提下计算了外墙总传热系数的较合 理的限值，验证了轻骨料混凝土隔热构件热工性能满足要求。 关键词：内置保温体系；层间挑板；轻骨料混凝土预制隔热构件；安全性分析；节能分析 中图分类号：TU 71 文献标志码：A 文章编号：1000-4726(2023)02-0231-04 reseArch on sAfety And energy sAving technology of lightweight AggregA te concrete pref ABricAted therMAl insulAtion coMponents CHEN Jin-yue 1 , CHEN Zhan-hu 1 , LIU Li-peng 2 (1. Hebei Sunsky Deeply Developed Technology Co., Ltd., 051430, Shijiazhuang, Hebei, China; 2. Hebei Jinduo Construction Engineering Co., Ltd., 051430, Shijiazhuang, Hebei, China) Abstract: In order to study the feasibility of using lightweight aggregate concrete insulation members to replace part of the interlayer cantiledged slabs in the thermal bridge treatment of cast- in-place concrete internal insulation system, firstly, the safety of the lightweight aggregate concrete insulation member in the interlayer is verified by test. Then the simulation method is used to calculate the thermal performance of the insulation component. The results show that the thickness of the graphite polystyrene board is 250 mm, and the prefabricated heat insulation member of lightweight aggregate concrete is placed in the middle of the pick plate, and the length is 150 mm, According to the test analysis. According to the test analysis, the deflection of the prefabricated heat insulation member of lightweight aggregate concrete and the cantilever member of concrete combination is 0.02 mm, which is far less than the deflection calculation limit, and no cracks appear. the safety performance meets the requirements. By comparing the thermal performance of mortar and vacuum plate in the treatment of interstorey cantileted plate, the DEST software is used to calculate the reasonable limit of the total heat transfer coefficient of external wall on the premise of meeting the energy efficiency index of passive ultra-low energy consumption building, and it is verified that the thermal performance of lightweight aggregate concrete insulation component meets the requirements. keywords: built-in thermal insulation system; interlayer cantilever plate; lightweight aggregate concrete prefabricated thermal insulatio