摘要
地铁车站的整体抗爆安全性能与其站台柱抗爆能力的大小密切相关.为此,从截面选择、轴压比的确定、箍筋形式及配筋率等方面对站台柱的抗爆性能进行了系统研究,并提出优化设计方法.研究结果表明:在对地铁车站站台柱进行抗爆设计时,截面形状宜采用圆形;增大箍筋直径或提高纵筋配筋率都不能显著提高钢筋混凝土柱抗爆性能,减小箍筋间距对提高柱子的抗爆能力具有明显的效果;针对圆柱提出改善其抗爆性能的箍筋配置方法;提出了站台柱合理安全防护距离的概念,并针对典型地铁车站给出建议值.
Platform column is the most important structural member, and its blast resistance capability is directly related to the integral blast resistance performance of subway station structure. In this paper, systematic researches are carried out on the selection of cross section, axial compression ratio, reinforcement form and ratio of stirrups, and optimization design methods are proposed for improving the blast resistance performance of typical subway sta- tion platform columns. The results show that a circular cross section is suggested in the blast-resistant design of sub- way station platform column. Reducing stirrup spacing can significantly improve the blast resistant capability of platform column, while increasing the diameter of stirrups or the ratio of longitudinal reinforcement has little effect. Furthermore, a new stirrup arrangement method for circular RC column is proposed to enhance its blast resistant ca- pability. A conception of reasonable safety protection distance for typical subway station platform columns is proposed with suggested values.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2013年第2期95-101,共7页
Journal of Tianjin University(Science and Technology)
基金
国家自然科学基金重点资助项目(51238007)
国家自然科学基金面上资助项目(51178306)
国家自然科学基金青年基金资助项目(51008209)
国家科技支撑计划资助项目(2012BAJ07B05)
教育部博士点基金新教师基金资助项目(20100032120042)
关键词
地铁车站
站台柱
抗爆性能
优化设计
安全距离
subway station
platform column
blast resistance performance
optimization design
safe distance
