Dynamic Behaviors of Railway's Base Course Materials Subjected to Long-Term Low-Level Cyclic Lo

来源 :2017年世界交通运输大会 | 被引量 : 0次 | 上传用户:ankang1989
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  The aim of this research was to develop a practical method for estimating the dynamic elastic modulus and accumulated plastic strain of a railway s base course materials subjected to increasing long-term,low-level cyclic loading.For this purpose,two series of cyclic triaxial tests,one with single-stage and the other with multi-stage loading were performed.
其他文献
公路急弯陡坡路段是山区高速公路事故频发路段,所面临的交通安全形势非常严峻。为了完善公路及公路设施,改善公路急弯陡坡路段交通安全环境,减少交通事故,提升公路安全水平,本文从急弯陡坡路段事故致因原理出发,引入制动作用指数(Braking EffectIndex,BEI)的概念,将其作为评价公路急弯陡坡路段安全性的指标,建立了线形质量评价模型,并基于六轴货车试验进行了实例验证,分析了西南某高速连续长下坡
Large diameter bored pile(LDB pile)has been widely applied to high-rise buildings,bridges,and high-speed railways,due to its high bearing capacity and simple construction.
The vehicle comprehensive performance is attenuated by the special hypobaric hypoxia environment in high-altitude area.It also causes the plateau reaction of driver and makes driving operation behavio
隐蔽工程在公路工程或房建工程中极为常见,但由于其不可见性,一旦发生质量问题,会造成巨大损失,隐蔽工程的质量直接决定整个工程的质量,故在隐蔽工程施工过程中需对各个环节的施工质量进行严格控制和管理。
Increasing the percentages of Reclaimed SBS Modified Asphalt Pavement(RSMAP)is a promising way to promote the development of sustainable roadway systems,and the excellent properties are the key to the
Joints and fractured cracks provide passageways for waters penetration into pavement and subgrade,which are the main factors causing damages of jointed plain concrete pavement(JPCP).
为更快捷、使用更少沥青样品地评价沥青低温流变性能,美国提出了一种使用DSR动态剪切流变仪和4mm(或8mm)平行板夹具的新的试验方法,称为4mm DSR 试验。
In order to figure out the mechanical behavior for rigid polyurethane concrete(RPC)in compression,uniaxial compressive tests of RPC specimens,which were molded by reaction injection,were conducted und
对涉路工程进行施工前的安全评价分析可以预防安全事故发生,降低事故影响,对保障公路运营安全具有重要意义。本文根据跨越主体的不同,对跨越式涉路工程进行分类,并结合杨北公路改建工程津蓟高速跨线桥上跨津蓟高速工程实例,对公路跨越式涉路工程展开安全评价要点分析,供相关专业人员参考。
短路基和两端构造物间的差异沉降量大于普通路段,斜向预应力混凝土复合式路面可有效解决短路基差异沉降造成的桥头跳车问题。。论文基于行车舒适性,界定在两桥(隧)之间路基长度少于200m 均可视为短路基。