Design Optimization of Pile Slab Wall Reinforcement Scheme for High Cutting Slope

YAN Qiong, PowerChina Roadbridge Group Co., Ltd., Beijing 100048, ChinaFollow
CAO Zhensheng, PowerChina Roadbridge Group Co., Ltd., Beijing 100048, China
WANG Meng, School of Civil and Resource Engineering, University of Science and Technology Beijing
WU Shunchuan, 2. School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China; 3. Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China
HAN Longqiang, Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, China

Abstract

The rationality of the reinforcement and support scheme for high and steep slopes formed by deep cutting of expressways, especially the reinforcement and support of large pile-slab wall structures, has been a common concern of scientific researchers and technical personnel in the field of highway subgrade engineering. In this paper, the right-side deep cutting slope in section K50 + 758.5–K50 + 850 of Jianshui (Gejiu)–Yuanyang Expressway project in Honghe Hani and Yi Autonomous Prefecture, Yunnan Province was taken as the research object. Based on the strength reduction theory and the normal, earthquake, and rainstorm conditions of slope construction, FLAC3D finite difference software was used. By comparing the slope stability indexes such as slope safety factor, maximum slope displacement, axial stress of anchor rod (cable), and shear strain increment cloud map before and after the design optimization, the design and analysis models of high cutting slope reinforcement were optimized. The calculation results show that the slope can eliminate the reinforcement and support structure of pile-slab walls, and the scheme meets the dual indexes of rationality and benefit. Finally, combined with the stability monitoring data of the slope and the reinforced structure, it is verified that the optimization scheme conforms to the low-carbon concept and has obtained remarkable economic benefits.

Publication Date

1-18-2024

DOI

10.14048/j.issn.1671-2579.2022.06.002

First Page

Last Page

Submission Date

May 2025

Recommended Citation

Qiong, YAN; Zhensheng, CAO; Meng, WANG; Shunchuan, WU; and Longqiang, HAN (2024) "Design Optimization of Pile Slab Wall Reinforcement Scheme for High Cutting Slope," Journal of China & Foreign Highway: Vol. 42: Iss. 6, Article 2.
DOI: 10.14048/j.issn.1671-2579.2022.06.002
Available at: https://zwgl1980.csust.edu.cn/journal/vol42/iss6/2

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