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11.
公路桥梁养护是保证公路桥梁应用质量和使用寿命的关键环节。本文通过对公路桥梁养护的病害和防治问题进行研究,结合衡德高速公路桥梁养护的实际案例,分析公路桥梁养护工作中常见的病害问题,并解析出现病害问题的原因,提出有效的防治策略,以促进公路桥梁养护工作水平的提高。 相似文献
12.
韩自力马战国谷牧尹京柴金飞段培勇司道林 《铁道建筑》2022,(8):23-28
重载铁路线路设备运维中汇集了大量检测监测数据,融合应用多源大数据分析,研究建立线路设备可视化全寿命周期管理和智能运维决策技术是实现重载线路设备智能运维需解决的关键技术问题之一。本文以朔黄铁路线路设备运维为背景,应用BIM、GIS等技术,将设备履历、状态、维修情况、病害等信息进行“一张图”融合,研究桥隧BIM+GIS融合以及轻量化技术;对比常用大数据分析方法的特点,提出基于结构仿真+大数据分析的智能运维决策方法研究思路,并以轨道结构状态评估为例,建立了基于模糊层次分析的状态评价方法。 相似文献
13.
为适应CRTSⅢ型轨道板高精度、快速、自动化检测的需求,将KUKA机器人与三维激光扫描仪相结合,设计出一套基于KUKA工业机器人的CRTSⅢ型轨道板表面特征点云自动化采集系统。利用KUKA机器人编程语言来实现机器人运动程序和逻辑控制程序的编写,利用C#语言来实现计算机控制系统程序及人机交互程序界面的编写,通过自定义通讯协议来实现计算机与机器人程序总体集成。研究表明,系统在各坐标分量上的重复定位精度为0.08 mm,点位重复定位精度为0.06 mm,能够满足相关规范中对检测项目0.5 mm的最高精度要求。该系统已在某轨道板生产线得到应用,大幅提高了检测效率,减少了人工投入和操作难度,实现了检测过程的高度自动化。 相似文献
14.
In order to assess temperature field in microwave heating for recycling asphalt pavements,a 2D mathematic heat transfer model was developed based on Fourier heat transfer theory The microwave internal heat?generation was researched by using surface field of pyramidal horn replacing approximate radiation field In addition,the boundary conditions were built and normalization processing was implemented The control volume based finite differential method (CV-BDM) was used to establish the implicit discrete scheme of the conservation
equations,and the numerical value simulation was employed By continuous or intermittent
radiation heating technique,a microwave heating experimental system at 2 145 GHz was carried out to investigate temperature variation characteristics of asphalt pavements along with heating time The result shows that (1) the increase of temperature of asphalt mixture during microwave heating is obviously nonlinear,the temperature rises slowly in the initial stage of the heating but increases rapidly in the late heating period; (2) the temperature distribution is non-uniform that the temperature in central area of the surface is higher while it is lower on edge; (3) the uniformity of temperature within asphalt mixtures can be improved by using intermittent heating technique,and the heating time must be reasonable The simulation results are in preferable agreement with the experiment 相似文献