市域快线双块式轨枕结构参数优化研究
吴嘉1冯青松2马晓川2尹华拓1磨玉琼3孙魁2
Structure Parameters Optimization of Urban Rapid Rail Bi-block Sleeper
WU JiaFENG QingsongMA XiaochuanYIN HuatuoMO YuqiongSUN Kui
-
作者信息:1.广州地铁设计研究院股份有限公司， 510220, 广州；
2.华东交通大学土木建筑学院， 330013, 南昌；
3.广西三维铁路轨道制造有限公司， 530409， 南宁
-
Affiliation:Guangzhou Metro Design & Research Institute Co., Ltd., 510220, Guangzhou, China
-
关键词:
-
Key words:
-
DOI:10.16037/j.1007-869x.2021.10.018
-
中图分类号/CLCN:U213.3+4
-
栏目/Col:研究报告
摘要:
相较城市轨道交通线路，市域快线的设计要求更高，采用双块式轨道结构可以进一步提高其安全性、平稳性和舒适性。针对广州某市域快线的技术特点和运营需求，设计了该线路双块式轨枕结构方案；并以降低混凝土温度收缩应力为原则，确定了较为合理的双块式轨枕倒圆角半径取值。建立堆放状态下的双块式轨枕结构力学分析模型，研究钢筋桁架参数对轨枕堆放力学性能的影响规律；并以钢筋等效应力和钢筋用量综合较小为优化目标，提出了较为合理的双块式轨枕钢筋桁架结构参数。
Abstracts:
Compared with the urban rail transit lines, the design requirements for urban rapid rail are higher, but the Bi-block track structure can further improve the safety, stability and comfort of rail transit lines. According to the technical characteristics and operational requirements of a Guangzhou urban rapid rail line, the scheme of Bi-block track sleeper structure for Guangzhou urban rapid rail is designed with the reduction of temperature shrinkage stress of concrete as the principle, and the reasonable round radius value of Bi-block track is determined. Then, a mechanical analysis model of Biblock sleeper under stacking state is established, and the influence law of reinforced concrete truss parameters on the mechanical properties of sleeper stack is studied. Finally, taking the relatively small equivalent stress of reinforcement and the amount of steel bars as the optimization target, reasonable structure parameters of the Bi-block sleeper reinforced truss are proposed.
引文 / Ref:
吴嘉，冯青松，马晓川，等.市域快线双块式轨枕结构参数优化研究[J].城市轨道交通研究，2021，24(10):90.
WU Jia，FENG Qingsong，MA Xiaochuan，et al.Structure parameters optimization of urban rapid rail Bi-block sleeper[J].Urban Mass Transit，2021，24(10)：90.
WU Jia，FENG Qingsong，MA Xiaochuan，et al.Structure parameters optimization of urban rapid rail Bi-block sleeper[J].Urban Mass Transit，2021，24(10)：90.
过刊浏览
资料下载
友情链接