Abstract：Embedded ballastless tracks are stable, low maintenance, and good at shock absorption and noise reduction, such that it accommodates the requirements of urban rail transit operation, and has been widely used in the construction of modern tram lines. Owning to the structural characteristics of embedded tracks, its optimization focuses on the trough structure and the polymer composite covering the rail. In this work，the static and dynamic behaviors of embedded ballastless tracks are analyzed by using the finite element software ANSYS. On the basis of topology optimization, given the requirements of cost, safety, noise, and vibration on the urban rail transit, the structure of embedded rail trough is optimized. The results indicate that less composite material at the junction of embedded rail waist and bottom saves the cost while guaranteeing track stiffness. Instead of being lowered in height, polymer composite material should cover the rail completely to decrease the noise and vibration. The width of the bearing slot should range between 200 and 220 mm at normal parts. Increasing the width of the bearing slot is the most effective measure to reduce the vibration in the areas subject to strict vibration requirement. The elastic modulus of the composite material should be chosen to ensure the track transverse stiffness and reduce the stress level of concrete track slab.
徐正和. 现代有轨电车的崛起和探索[J]. 现代城市轨道交通,2005(2):11-15 XU Zhenghe. The emergence and exploration of modern trams[J]. Modern Urban Transit, 2005(2):11-15
[2]
薛美根,杨立峰,程杰. 现代有轨电车主要特征与国内外发展研究[J]. 城市交通,2008,6(6):716-717 XUE Meigen, YANG Lifeng, CHENG Jie. Modern trams:characteristics & development both at home and abroad[J]. Urban Transport of China, 2008, 6(6):716-717
[3]
李元坤,苗彦英. 国外现代有轨电车建设发展的启示[J]. 城市轨道交通研究,2013,16(6):29-32 LI Yuankun, MIAO Yanying. Enlightenment of modern tram construction and development in foreign countries[J]. Urban Mass Transit, 2013, 16(6):29-32
[4]
翟婉明,赵春发. 现代轨道交通工程科技前沿与挑战[J]. 西南交通大学学报,2016,51(2):209-226 ZHAI Wanming, ZHAO Chunfa. Frontiers and challenges of sciences and technologies in modern railway engineering[J]. Journal of Southwest Jiaotong University, 2016, 51(2):209-226
[5]
李芾,杨阳. 城市自导向胶轮电车技术特点与应用[J]. 西南交通大学学报,2016,51(2):291-299 LI Fu, YANG Yang. Characteristics and application of urban rubber-tyred self-steering trams[J]. Journal of Southwest Jiaotong University, 2016, 51(2):291-299
[6]
胥燕军,林红松,王健,等. 现代有轨电车轨道结构综述[J]. 铁道标准设计,2014,56(7):58-62 XU Yanjun, LIN Hongsong, WANG Jian, et al. Overview on track structure for modern tramway[J]. Railway Standard Design, 2014, 56(7):58-62
[7]
牛月明,戴月辉. 钢轨嵌入式轨道结构及其设计优化[J]. 城市轨道交通研究,2003,6(6):100-102 NIU Yueming, DAI Yuehui. The structure of embedded track[J]. Urban Mass Transit, 2003, 6(6):100-102
[8]
秦超红. 嵌入式轨道线路稳定性研究[D]. 成都:西南交通大学,2014.
[9]
李娟,胥燕军,任娟娟. 现代有轨电车单层板轨道结构参数研究[J]. 铁道标准设计,2015,59(4):24-27 LI Juan, XU Yanjun, REN Juanjuan, et al. Study on parameters of modern tram single plate track structure[J]. Railway Standard Design, 2015, 59(4):24-27
[10]
毕澜潇,赵坪锐,林红松,等. 嵌入式轨道PVC管埋设方式对轨道结构受力影响分析[J]. 铁道标准设计,2017,61(7):37-42 BI Lanxiao, ZHAO Pingrui, LIN Hongsong, et al. Analysis on force effect of embedded track pvc tube on track structure[J]. Railway Standard Design, 2017, 61(7):37-42
林红松,颜华. 有轨电车埋入式无砟轨道及关键部件型式研究[J]. 铁道工程学报,2016(6):60-65 LIN Hongsong, YAN Hua. Type research on the embedded ballastless track structures and key components of modern tram way[J]. Journal of Railway Engineering Society, 2016(6):60-65
[13]
李成辉. 轨道[M]. 成都:西南交通大学出版社,2012:68-70
[14]
MARKINE V, DE MAN A, JOVANOVIC S, et al. Modelling and optimisation of an embedded rail structure[J]. Rail International, 2000(1):15-23
[15]
伍先俊,朱石坚,曹建华. 结构声振研究的功率流方法[J]. 力学进展,2006,36(3):362-372 WU Xianjun, ZHU Shijian, CAO Jianhua. Review on structural vibration power flow prediction methods[J]. Advances in Mechanics, 2006, 36(3):362-372
[16]
伍先俊,程广利,朱石坚. 最小振动功率流隔振系统ANSYS优化设计[J]. 武汉理工大学学报(交通科学与工程版),2005,29(2):186-189 WU Xianjun, CHENG Guangli, ZHU Shijian. Isolation system optimization by ansys for minimizing vibration power flow[J]. Journal of Wuhan University of Technology (Transportation Science & Engineering), 2005, 29(2):186-189
[17]
吴永芳. 轨道减振效果系统评价方法研究[J]. 中国铁道科学,2013,34(3):1-6 WU Yongfang. Investigation into the evaluation method for vibration damping effect of track systems[J]. China Railway Science, 2013, 34(3):1-6
