路面加速加载实验设备研究
2021-11-07王刚贾倩张鹏管志光张吉卫杨福广
王刚 贾倩 张鹏 管志光 张吉卫 杨福广
摘要:路面加速加载实验设备可在短时间内完成路面数年后的破坏情况,是检测路面状态的最有效的手段之一。现有的足尺路面加速加载实验设备普遍存在价格昂贵,体积质量大,不易移动,结构复杂等问题。本文在现有设备的基础上,开发研制了回转式路面加速加载实验设备,设备规格小、质量轻、运输方便、操作简单,解决了大型足尺加速加载设备的不足之处。可高效、准确的完成路面加速加载性能实验研究,为道路建设提供可靠依据。
Abstract: The road surface accumulation and loading equipment is one of the most effective means to detect the state of the road surface, which can complete the damage of the road surface in a short time. The existing full scale equipment for road surface generally has some problems, such as high price, large mass, difficult to move and complex structure. On the basis of the existing equipment, this paper develops a rotary road accelerated loading experimental equipment, which has small size, light weight, convenient transportation and simple operation, and overcomes the shortcomings of large full scale equipment. It can efficiently and accurately complete the test and research on accelerated loading performance of pavement, and provide reliable basis for road construction.
关键词: 路面加速加载;回转式;实验设备
Key words: road surface accumulation and loading;rotation;experiment equipment
中图分类号:U418.6 文献标识码:A 文章編号:1674-957X(2021)21-0058-02
1 国内外路面加速加载实验设备发展现状
目前,城市道路和高速公路大多为沥青路面,沥青路面平整度高、接缝少、具有一定的弹性等优点,但随着时间推移,沥青路面会发生劣化。特别是在高强度高负荷的碾压下沥青路面发生硬化和疲劳损坏的几率变大,导致其寿命减少[1]。
如何在较短的时间内,模拟数年甚至数十年路面的碾压情况,来检验路面质量是当前社会科学发展亟需解决的问题。国外研制了多类型的路面检测设备,模拟车辆车轮碾压路面的情况,可以在短时间内模拟数年内该路面实际的交通流量,可为检测路面状态、分析路面生命周期内的破坏机理和优化道路性能指标提供依据。
路面加速加载实验设备可分为环道式、直道可移动式和固定轨道式三类[2]。
1.1 环道式路面加速加载实验设备……p>
