CRTS Ⅲ型轨道板平整度检测方法对比研究

Comparative Study on Flatness Detection Methods of CRTS Ⅲ Track Slab

平整度是CRTSⅢ轨道板外形尺寸一个重要检测指标,规范、有效、快速的检测轨道板平整度对生产企业控制轨道板翘曲形变具有重要意义。本文通过对现阶段常见的3种快速测定方法进行总结分析,阐述各检测手段对平整度检测结果、检测效率的影响,并与传统检测方法进行对比,对比分析结果表明:(1)全站仪法和快速检测平台法可对轨道板进行全尺寸测试,其他测试方法仅能测试轨道板的平整度;(2)六工位测量机和激光PSD检测法对轨道板铺放要求相对较低,减少了轨道板吊铺工序,提高了检测效率;(3)全站仪可以进行有效检定,其他检测方法所配套的新型检测设备暂无公认的检定方法,检测结果的确认需通过与全站仪法的检测结果进行比较。

The flatness is an important detection index of the outer dimensions of the CRTS Ⅲ track slab.The standardized,effective and rapid detection of the track slab flatness is of great significance for the production enterprise to control the warping deformation of the track slab.Through the summary and analysis of three kinds of common rapid detecting methods at present,this paper expounds the influence of different detecting method on the flatness detection result and detection efficiency and compares with the traditional detecting methods.The results show that:(1)the total station instrument method and the rapid detection platform method can detect the full-scale track slab,while the other detecting methods can only detect the flatness of the track slab;(2)the six-station measuring machine and laser PSD detection method has relatively low requirements for laying of the track slab,which reduces the hanging process of the track slab and improves the detection efficiency;(3)the results detected by total station instrument method can be effectively verified,while at present,there is no recognized verification method for the new type of detecting equipment supported by other detecting methods,and the verification of detecting results needs to be compared with the results detected by total station instrument method.