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Investigation on the settlement of high rock- fill embankment using centrifuge tests
Frontiers in Physics ( IF 3.1 ) Pub Date : 2021-05-31 , DOI: 10.3389/fphy.2021.547991
Hong Jun Jing , Ming Jie Gou , Yan Qing Zhang , Ki-IL Song

In this paper, a more than 50 m high rock fill embankment of the second-class road reconstruction project from Xunyang to Ankang of the national road 316 in Shaanxi, China, was selected as the research object. A set of centrifuge tests was performed to study the deformation laws and the impact on the surrounding environment of high rock fill embankment. The test results showed that: (i) the high rock fill embankment was stable during construction and operation; (ii) during construction, settlement occurred at the embankment top, and uplift occurred at the slope foot. Moreover, the deformation at the top was greater than that at the slope foot, and the deformations both the top and the slope toe, reached maximum value at the end of construction; (iii) during operation, the settlement at the embankment top continued, and it changed rapidly at the start of operation. And then, the rate of settlement slowed down and reached a steady state finally. The deformation of the slope foot was very small; and (iv) in terms of the deformation range, the construction and long-term operation of the high rock fill embankment will not affect the nearby railway and water area. This study can also provide basis and reference for the design and construction of similar project in mountain areas.

中文翻译:

离心机试验研究高堆石路堤沉降

本文以陕西316国道浔阳至安康二级公路改建工程50 m以上的填石路堤为研究对象。进行了一套离心机试验,研究了高堆石路堤的变形规律及其对周围环境的影响。试验结果表明:(i)高填石路堤在施工和运营过程中是稳定的;(ii) 施工过程中,路堤顶部发生沉降,坡脚发生隆起。且坡脚顶部变形大于坡脚,坡脚顶部和坡脚的变形均在施工结束时达到最大值;(iii) 运行期间,路堤顶部沉降持续,并且在开始运行时变化很快。然后,沉降速度放缓,最终达到稳定状态。坡脚变形很小;(iv) 就变形范围而言,高填石路堤的建设和长期运营不会影响附近的铁路和水域。本研究也可为山区类似工程的设计和施工提供依据和参考。
更新日期:2021-05-31
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