Model test on mechanical behavior of rigid load shedding culvert under high fill

SONG Ding-bao; PU He-fu; CHEN Bao-guo; MENG Qing-da

doi:10.16285/j.rsm.2019.0031

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Model test on mechanical behavior of rigid load shedding culvert under high fill

更新时间：2026-06-25

- Model test on mechanical behavior of rigid load shedding culvert under high fill
- Vol. 41, Issue 3, Pages: 823-830(2020)
- 作者机构：
  
  1. 华中科技大学土木工程与力学学院,湖北,武汉,430074
  2. 中国地质大学(武汉) 工程学院,湖北,武汉,430074
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2019.0031
  CLC： U449
- Online First：25 May 2020，
  
  Published：2020
- 稿件说明：
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SONG Ding-bao, PU He-fu, CHEN Bao-guo, et al. Model test on mechanical behavior of rigid load shedding culvert under high fill[J]. 2020, 41(3): 823-830.
DOI：

SONG Ding-bao, PU He-fu, CHEN Bao-guo, et al. Model test on mechanical behavior of rigid load shedding culvert under high fill[J]. 2020, 41(3): 823-830. DOI： 10.16285/j.rsm.2019.0031.

摘要

为了研究高填方减载式刚性涵洞结构的减载效果，利用模型试验分别对减载式刚性涵洞、采用一般减载方法的涵洞和未减载涵洞的涵顶垂直土压力和侧墙水平土压力进行对比分析。在此基础之上，建立了减载式刚性涵洞涵顶垂直土压力理论模型，推得了减载式刚性涵洞涵顶垂直土压力计算式，并将模型试验结果与理论分析结果进行了对比分析。研究结果表明，减载式刚性涵洞不仅能够有效缓解涵顶应力集中，而且与一般减载涵洞相比还能有效减小涵洞侧墙水平土压力；对于减载式涵洞涵顶垂直土压力，理论计算结果与模型试验结果一致且两者相差较小，从而验证了理论模型的适用性和正确性。

Abstract

For investigating the performance of load shedding culvert (LSC)

model tests were conducted first. The performance of LSC was compared with those of imperfect-trench-installation culvert (ITC) and embankment-installation culvert (EC). Vertical earth pressure and horizontal earth pressure were measured in the model tests. Then

a theoretical model was established

and the formula for calculating the vertical earth pressure on the top slab of LSC was deduced. The proposed theoretical model was validated by comparing the results with those from model test. Research results illustrate that the LSC

compared EC

can effectively reduce the vertical earth pressure on the top slab. Comparing with ITC

LSC can not only improve the load reduction effect on the top slab but also reduce the horizontal earth pressure on the culvert sidewall. Theoretical results of the vertical earth pressure on the LSC top slab were consistent with the model test results

which indicate that the proposed theoretical model is correct and applicative.

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Related Institution

Faculty of Engineering, China University of Geosciences

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School of Civil Engineering and Architecture, Hubei University of Technology

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