铁道科学与工程学报2018，Vol.15Issue(4)：986-994,9.
带上盖物业地铁车辆段盖板结构耐火性能研究
Study on fire resistance performance of the cover plate upon subway vehicle depot with over development of buildings
摘要
Abstract
Through the investigation of codes and engineering cases, the fire endurance limit and the design measures of the main components of the cover plate upon metro depot were determined. Based on the thermal elasto-plastic constitutive model, a nonlinear element analysis program was developed to numerically simulate the transient temperature field and the mechanical behavior of the most unfavorable slab and beam in the cover plate structure. The calculation results show that the design measures of the beam and slab of the cover structure could meet the requirements of 3.00 h fire resistance. According to the comparative study of the thermal stress and deformation of the two-way slab and unidirectional slab under fire, the relationship between the membrane effect and the length-width ratio was obtained. By regression analysis, the relationship curve between the temperature rise of the unexposed surface and the thickness along the direction of temperature gradient is proposed and the minimum thickness of the cover plate is defined. The results could provide reference for the fire protection design of this kind of structure.关键词
地铁车辆段/钢筋混凝土盖板结构/耐火极限/瞬态温度场/高温变形/薄膜效应Key words
subway vehicle depot/reinforced concrete cover plate/fire endurance/transient temperature field/temperature deformation/membrane effect分类
建筑与水利引用本文复制引用
张新,罗俊礼,徐志胜,倪天晓,彭锦志,谢宝超..带上盖物业地铁车辆段盖板结构耐火性能研究[J].铁道科学与工程学报,2018,15(4):986-994,9.基金项目
中南大学中央高校基本科研业务费专项资金资助项目(2013zzts049) （2013zzts049）
湖南省教育厅科学研究项目(16C1077) （16C1077）
