同济大学学报（自然科学版）2012，Vol.40Issue(6)：823-828,6.DOI:10.3969/j.issn.0253-374x.2012.06.004
火灾高温下隧道衬砌管片力学性能试验
Experimental Study on Mechanical Performance of Lining Segments in Fire Accidents
摘要
Abstract
To investigate the mechanical performance of the tunnel lining segments, a series of fire experiments on the reinforced concrete (RC) and the steel fiber reinforced concrete (SFRC) segments under different load cases were conducted. The HC curve was employed in the experiments. The results indicate that the internal force of the segments varies significantly, which is equal to a loading and unloadinj action on the segments and aggravate their damages.The initial load presents a great effect on the ultimate load of the segments after high temperature, and the greater the initia load, the smaller the ultimate load. Furthermore, the ultimate load of the RC segments is larger than the ones of the SFRC segments. The maximum temperature has lesser influence on the ultimate load of the SFRC segments under high temperature, while it exerts a significant effect on the RC segments. And the higher the maximum temperature, the smaller the ultimate load of the RC segments under high temperature.关键词
火灾高温/隧道衬砌/力学性能/钢纤维混凝土Key words
high temperature/ tunnel lining/ mechanical performance/ steel fiber reinforced concrete分类
交通工程引用本文复制引用
闫治国,朱合华,梁利..火灾高温下隧道衬砌管片力学性能试验[J].同济大学学报（自然科学版）,2012,40(6):823-828,6.基金项目
国家自然科学基金(50808137,50978197) （50808137,50978197）
光华同济土木学院基金及长江学者和创新团队发展计划(IRT1029) （IRT1029）
