竖直传高自动化研究

在工程安全监测自动化系统中 ,垂直位移监测自动化是其重要组成部分 ,而联系不同高程面上垂直监测系统的高程传递自动化系统无疑是整体垂直位移监测自动化系统的纽带。论述了竖直传高自动化的原理 ,介绍了遥测仪竖直传高的构成、指标、特点及其竖直传高精度 ,解决了垂直位移监测系统整体自动化中的难题。竖直传高仪不仅能在不同层面间进行高程传递 ,而且能把各层面垂直位移监测联系成整体 ,使其实现垂直位移监测整体系统自动化。该方法显著提高了工效 。

浅谈山区高速公路薄壁高墩竖直度的质量控制

文章结合泉三高速公路三明段SMA1合同段的施工经验,对山区高速公路薄壁高墩竖直度质量控制措施进行了分析与阐述。

高速铁路站台限界测量小车的研制

介绍一种以轨道面为测量基准,对高速铁路站台限界进行高精度测量的站台限界测量小车。通过H形走行机构中的高精度位移传感器、里程编码器和倾角传感器获取轨道的轨距、超高、走行里程等数据,基于机器视觉的非接触式测量方式,通过线激光发生器发射的激光在站台上形成站台轮廓线,由高分辨率的工业面阵相机摄取图像,经图像识别处理后,综合轨道数据最终获得站台的轨心距、竖高限界数据;通过软件界面直观地查看站台限界测量数据曲线,并能直接生成站台限界测量数据报表。

余热锅炉在煤气发生炉上的应用

介绍利用余热锅炉回收煤气发生炉出口余热的工艺流程、技术条件及设备选型,分析温度、阻力降、积灰等因素对系统的影响,进行相应的设计与改造。改造后的流程运行稳定,达到了设计指标,实现了对煤气显热的回收,节能效果和经济效益良好。

Calculus of the Railway Vertical Stiffness Depending on the Base Plate Stiffness and the Ballast for High Speed Railways

The study aims to determine a mathematical formula that correlates the vertical stiffness of the principal elements of a high speed railway. To do this, beginning on the traditional formulations, a new mathematical model has been proposed, and has been verified and confirmed with the real information of high speed railways. Finally, there has been obtained a simple expression that correlates simply the vertical stiffness of the railway with the vertical stiffness of the elements that compound it, essentially with the base plate and the ballast system set. On the other hand, also the accuracy of the model has been verified to select the stiffness of the base plate and the ballast system depending on one of this stiffness and the total vertical stiffness that it is wanted. With this simplified formula, it is possible to optimize the vertical stiffness of the railway to obtain the best behavior in each zone and to reduce the final cost of the use of the via, taking in consideration the energy needed to move the trains, the maintenance cost, the useful life, etc.. The process to optimize the railway stiffness in each point depends on the vertical stiffness of the ballast and the sub-ballast, and it is possible to use different plate bases with different stiffness to obtain the optimal stiffness that has been previously obtained with a cost and maintenance analysis.