| 桥上CRTSⅡ型板式无砟轨道底座板屈曲分析 |
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| 引用本文： | 张丰华,唐进锋,谭亚.桥上CRTSⅡ型板式无砟轨道底座板屈曲分析[J].石家庄铁道学院学报(社会科学版),2016(1):55-58,74. |
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| 作者姓名： | 张丰华 唐进锋 谭亚 |
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| 作者单位： | 中南大学 土木工程学院;中南大学 土木工程学院;中南大学 土木工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(E080704) |
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| 摘 要： | 根据桥上CRTS Ⅱ型板式无砟轨道结构特性，利用有限元分析方法，采用梁单元模拟钢轨，实体单元模拟轨道板、底座板和桥梁，弹簧单元分别模拟砂浆填充层和滑动层，建立CRTSⅡ型板式无砟轨道纵向力计算模型。基于现场测量的底座板厚度资料和桥梁资料，计算出模型中各单元参数值。利用当地气温资料和轨道机车类型，得到最大温升和列车制动力值，计算出温度荷载和列车制动荷载作用下底座板厚度不足处纵向力值。分析温度荷载和列车制动荷载对底座板厚度不足处屈曲的影响。
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| 关 键 词： | CRTS Ⅱ型板式无砟轨道 有限元 温度荷载 屈曲 |
| 收稿时间： | 2015/1/16 0:00:00 |
Analysis on Base Plate Buckling of CRTS II Ballastless Slab Track |
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| Authors: | Zhang Fenghu Tang Jinfeng and Tan Ya |
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| Institution: | School of Civil Engineering, Central South University;School of Civil Engineering, Central South University;School of Civil Engineering, Central South University |
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| Abstract: | According to the characteristics of CRTS II slab track structure, with rails modeled by beams, slab tracks and base plates modeled by solid unit while the bearing layers modeled by springs, the model of longitudinal force of CRTS II Ballastless Slab Track is established through finite element analysis. By using the data of base plate thickness and bridge, the parameters of the model are calculated. The data of local temperature and the locomotice type are obtained, and the maximum temperature rise and brake force are calculated. By loading temperature load and brake force, the longitudinal force at base plate thickness lack is calculated. The influence of temperature load and brake force to buckling at base plate thickness lack is analyzed. |
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| Keywords: | CRTS II ballastless slab track finite element temperature load buckling |
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