Effect of earth reinforcement, soil properties and wall properties on bridge MSE walls

doi:10.1007/s11709-021-0764-2

Frontiers of Structural and Civil Engineering

2021, Vol. 15

Issue (5): 1209-1221 https://doi.org/10.1007/s11709-021-0764-2

本期目录

Effect of earth reinforcement, soil properties and wall properties on bridge MSE walls

Zaid MOMANI¹, Eyosias BENEBERU², Nur YAZDANI³(

)

¹. Department of Civil Engineering, Al-Ahliyya Amman University, Amman 19328, Jordan
². Bridgefarmer & Associates, Dallas, TX 75234, USA
³. Department of Civil Engineering, University of Texas at Arlington, Arlington, TX 76019, USA

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Abstract：

Mechanically stabilized earth (MSE) retaining walls are popular for highway bridge structures. They have precast concrete panels attached to earth reinforcement. The panels are designed to have some lateral movement. However, in some cases, excessive movement and even complete dislocation of the panels have been observed. In this study, 3-D numerical modeling involving an existing MSE wall was undertaken to investigate various wall parameters. The effects of pore pressure, soil cohesion, earth reinforcement type and length, breakage/slippage of reinforcement and concrete strength, were examined. Results showed that the wall movement is affected by soil pore pressure and reinforcement integrity and length, and unaffected by concrete strength. Soil cohesion has a minor effect, while the movement increased by 13–20 mm for flexible geogrid reinforced walls compared with the steel grid walls. The steel grid stresses were below yielding, while the geogrid experienced significant stresses without rupture. Geogrid reinforcement may be used taking account of slippage resistance and wall movement. If steel grid is used, non-cohesive soil is recommended to minimize corrosion. Proper soil drainage is important for control of pore pressure.

Key words： mechanically stabilized earth walls precast concrete panels backfill soil finite element modeling earth reinforcement

收稿日期: 2021-04-16 出版日期: 2021-11-29

Corresponding Author(s): Nur YAZDANI

引用本文:

. [J]. Frontiers of Structural and Civil Engineering, 2021, 15(5): 1209-1221.
Zaid MOMANI, Eyosias BENEBERU, Nur YAZDANI. Effect of earth reinforcement, soil properties and wall properties on bridge MSE walls. Front. Struct. Civ. Eng., 2021, 15(5): 1209-1221.

链接本文:

https://academic.hep.com.cn/fsce/CN/10.1007/s11709-021-0764-2
https://academic.hep.com.cn/fsce/CN/Y2021/V15/I5/1209

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