ballast track

Against to high-speed railway , ballast track and ballastless track have their own merits and drawbacks .

针对高速铁路，有砟轨道和无砟轨道各有优缺点。

The lager impact force between wheel and rail will accelerate the rail deformation and reduce the stability of the rail . Therefore , during the construction of the ballast track , the management value of the rail system need be reduced constantly .

较大的轮轨冲击力又将导致轨道变形加速，稳定性降低，因此在有砟轨道施工过程中要不断降低轨道系统的各项管理值。

A Discussion on the Analytic Model for Ballast Track Structures

轨道结构分析模型的探讨

Slab track structure is one of the most important structures of non ballast track .

板式轨道结构是无碴轨道一种重要的结构形式。

Ballastless track is more economic than ballast track in long run .

长远来看，其经济性优于有砟轨道。

Compared with common railway of ballast track , it is required to paved by ballastless track on the whole line and has stricter control of roadbed deformation .

它与普通线路的有碴轨道相比，对路基沉降的变形要求更高、更严。

Because the ballastless track is superior to the traditional ballast track in the form of the above performances , ballastless track is widely applied in the high-speed railway construction abroad .

无碴轨道由于在上述性能方面明显优越于传统的有碴轨道结构，因而在国外高速铁路建设中得到了广泛应用。

Different from traditional ballast track , there are significant differences in the control of subgrade settlement , the structure of subgrade bed , the construction of transitional section , as well as general pre-evaluation when constructing ballastless track .

与传统有碴轨道相比，客运专线路基地段铺设无碴轨道后，对路基工程的沉降变形控制、基床结构、过渡段设置及铺设前的综合评估有明显的差别。

The heavy-haul railway track in the world is mainly ballast track . Recent years , with the development of high speed railway , passenger special lines and urban rail transit , ballastless track has been widely installed and become maturer and maturer in technology .

目前世界各国的重载线路基本以有砟轨道为主，近些年来，随着高速铁路、客运专线及城市轨道交通的发展，无砟轨道得到了广泛应用，技术日益成熟。

The Low Cost Wide-Sleeper Ballast Bed Track with Damping Rubber Bits

廉价减振型宽枕碎橡胶道床轨道

Study on the Regression Model of Ballast Impedance of Track Circuit with Concrete Sleepers

混凝土轨枕轨道电路道碴阻抗回归模型的研究

The basical features of sand hazard along the railway are eroding ballast , covering track and wearing equipments in desert and semidesert areas .

荒漠、半荒漠地带铁路沙害的基本特征是沙侵道床、埋没轨道、磨蚀设备。

But in fact , due to the great variation of ballast resistance during track work and change of " stress free temperature " of the rail , they are hard to measure then hard to control .

但道床阻力在作业时变化很大，钢轨在线路上长期使用，锁定轨温可能发生变化，温度力亦不易控制。

Effects of Ballast Thickness on Rail Track Structure

道碴厚度对轨道结构的影响

Research on Improving the Ballast Elasticity of the Track on Nanjing Yangtze River Bridge

南京长江大桥有砟桥道床弹性改善的研究

Using theory of strength of track structure and vehicle - track coupling vibration dynamic model , we analyze the effects the different thickness of ballast act on relevant track structure parts and deduce the rational thickness of ballast .

本文应用轨道结构强度计算理论及车辆－轨道耦合振动动力学仿真计算模型，分析了不同道床厚度对相关轨道结构部件的影响，得出了合理道床厚度的建议值。

The analysis reveals elastic sleeper may better springiness of rail , cushion the shock on the train , and the vibration of ballast bed , lessen smash of ballast , prolong track maintenance circle , also keep train on a safe and quiet run .

通过对两种轨道动力响应的对比分析，表明弹性轨枕不仅能够提高轨道弹性，缓和列车冲击，减轻道床振动，减少道碴粉化，延长轨道维护周期，还能保持行车的安全性与平稳性。