东南大学学报（英文版）2018，Vol.34Issue(2)：220-228,9.DOI:10.3969/j.issn.1003-7985.2018.02.012
预制复合保温墙体单面受火后轴压承载力试验研究
Experimental study on axial compressive behaviors of prefabricated composite thermal insulation walls after single-side fire exposure
摘要
Abstract
The axial bearing capacity of prefabricated composite walls composed of inner and outer concrete wythes, expandable polystyrene ( EPS ) boards and steel sleeve connectors is investigated. An experimental study on the axial bearing capacity of four prefabricated composite walls after fire treatment is carried out. Two of the prefabricated composite walls are normal-temperature specimens, and the others are treated with fire. The damage modes and crack development are observed, and the axial bearing capacity, lateral deformation of the specimens, and the concrete and reinforcing bar strain are tested. The results show that the ultimate bearing capacity of specimens after a fire is less than that of normal-temperature specimens; when the insulation board thicknesses are 40 mm and 60 mm, the decrease amplitudes are 20. 8% and 16. 8%, respectively. The maximum lateral deformation of specimens after a fire is greater than that of normal-temperature specimens, and under the same level of load, the lateral deformation increases as the insulation board thickness increases. Moreover, the strain values of the concrete and reinforcing bars of specimens after a fire are greater than those of normal-temperature specimens, and the strain values increase as the thickness of insulation board increases.关键词
预制复合保温墙体/膨胀聚苯乙烯板/火灾/保温层/受火后/轴压性能Key words
prefabricated composite thermal insulation walls/expandable polystyrene board/fire exposure/insulation layer/post-fire/axial compressive behavior分类
建筑与水利引用本文复制引用
付倩,朱筱俊,梁书亭,杨建,李向民,许清风,高明珠..预制复合保温墙体单面受火后轴压承载力试验研究[J].东南大学学报（英文版）,2018,34(2):220-228,9.基金项目
The National Key Research and Development Pro-gram of China (No. 2016YFC0701703), the Natural Science Founda-tion of Higher Education Institutions of Jiangsu Province ( No. 2016TM045J), the Scientific Innovation Research of Graduate Students in Jiangsu Province (No. KYLX 0151). （No. 2016YFC0701703）
