高速铁路无砟轨道钢轨精调过程控制关键技术

在高速铁路钢轨精调施工过程中,如果对静态调整过程控制重视不够,不能充分掌握关键技术,将导致联调联试时,钢轨精调工作量增加,调整难度增大,继而影响联调联试,因此,严格把握钢轨精调的关键技术是十分必要的,有利于轨道几何尺寸尽快满足联调联试的要求。根据石武客运专线钢轨精调作业的经验,结合使用轨检小车对钢轨进行精调施工的特点,对钢轨精调的过程进行梳理分析,提出在施工准备阶段、施工阶段和成果验收阶段需要分别把握的关键技术,并利用检测数据进行分析验证,实践表明,这些关键技术对钢轨精调起到了决定作用。

Key Technologies of Process Control of Steel Rail Fine Adjustment of High-speed Railway

In the process of steel rail fine adjustment construction of high-speed railway,if ignoring the process control or paying no attention to the key technologies during static adjustment,the workload and difficulty of steel rail fine adjustment during integrated commissioning will be increased,and consequently the integrated commissioning will be influenced adversely. Therefore,it is very important to master the key technologies of steel rail fine adjustment,in order that the track geometry size can quickly meet the requirement of integrated commissioning. This paper, based on the experience on steel rail fine adjustment for Shijiazhuang-Wuhan passenger dedicated line,in combination with the characteristic ofsteel rail fine adjustment by the use of track inspection trolley,analyzed the process of steel rail fine adjustment in details. Furthermore,this paper proposed the key technologies which should be mastered respectively in construction preparation stage,construction stage and acceptance stage; and also carried out relevant analysis and verification by using inspection data. It is proved by practice that these key technologies have played significant roles in fine adjustment of steel rail.