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Settlement characteristics of bridge approach embankment based on scale model test

基于缩尺模型试验的路桥过渡段沉降特性

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Abstract

In order to analyze the effects of backfill materials, geometries and slab setting on the settlement of bridge approach embankment, scale model was built based on the structural characteristics of bridge approach embankment, and scale model tests were carried out under different conditions. The results show that when graded gravels were selected as the backfill materials, the effect of setting approach slab to reduce the differential settlement is more prominent. When lime soils were selected as the backfill material, approach slab can moderate the longitudinal settlement slope. When using different backfill materials, the ultimate settlement of the positive trapezoidal backfill geometries is less than that of the inverted trapezoid, and the backfill geometries have little effect on the settlement slope.

摘要

为了研究不同回填材料、回填结构及桥头搭板的设置对路桥过渡段沉降的影响,本文根据路桥 过渡段的结构特性,进行了不同条件下的路桥过渡段缩尺模型试验。结果表明,使用级配碎石作为回 填材料进行路桥过渡段路基回填时,设置搭板对减小路桥过渡段差异沉降的效果更为明显;使用石灰 土时,设置搭板可以缓和桥台后路线纵向不同位置的沉降坡度。使用不同回填材料时,正梯形回填结 构最终沉降量均小于倒梯形,且回填结构对沉降坡度的影响不大。

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Authors and Affiliations

  1. School of Highway, Chang’an University, Xi’an, 710064, China

    Jiu-peng Zhang  (张久鹏), Tao Liu  (刘涛), Jian-zhong Pei  (裴建中) & Rui Li  (李蕊)

  2. China Railway Second Academy Engineering Group Co. Ltd., Chengdu, 610036, China

    Dao-guang Zou  (邹道光)

  3. National Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science & Technology, Changsha, 410114, China

    Yu-qing Zhang  (张裕卿)

  4. Aston Institute of Materials Research, Engineering Systems & Management Group, Aston University, Birmingham, B4 7ET, UK

    Yu-qing Zhang  (张裕卿)

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  1. Jiu-peng Zhang  (张久鹏)
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  3. Jian-zhong Pei  (裴建中)
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Correspondence to Jiu-peng Zhang  (张久鹏).

Additional information

Foundation item: Project(51978068) supported by the National Natural Science Foundation of China; Project(2018YFE0103800) supported by the National Key R&D Program of China; Project(2017M620434) supported by the China Postdoctoral Science Foundation; Project(310821173501) support by the Special Fund for Basic Scientific Research of Central College of Chang’an University, China

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Zhang, Jp., Liu, T., Pei, Jz. et al. Settlement characteristics of bridge approach embankment based on scale model test. J. Cent. South Univ. 27, 1956–1964 (2020). https://doi.org/10.1007/s11771-020-4422-y

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  • DOI: https://doi.org/10.1007/s11771-020-4422-y

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