铁路路堑装配式绿化挡墙关键技术分析研究

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摘要 研究目的: 本文以川南城际铁路泸州车站路堑边坡装配式绿化挡墙工点为依托,对该挡墙结构的受力特点、位移变形情况采用仿真模拟分析研究,确定该挡墙技术合理、经济可行的关键技术参数。
研究结论: (1)装配式绿化路堑挡墙紧贴开挖坡体施作,必要时设置趾板和凸榫;(2)趾板宽度为1 m时较无趾板情况下的墙体位移有显著下降,建议趾板宽度设置为1～1.5 m;(3)锚杆的设置会显著改善装配式挡墙的受力和位移,挡墙设置锚杆时,锚杆间距对装配式路堑挡墙的变形和稳定性有较大影响,对于风化泥岩的路堑边坡,建议锚杆竖向间距不大于2.1 m;(4)墙体主要表现为肋柱受压,且肋柱与基础底板连接处发生显著应力集中,应合理进行构造柱配筋,并加强肋柱与基础底板处的配筋设计;(5)本研究成果对路堑支挡工程的推广应用具有指导意义。

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	司文明
	张昕升
	唐元丽
	蒋楚生
	赵晓彦

关键词 ：路堑边坡, 装配式绿化挡墙, 趾板和凸榫, 锚杆

Abstract：Research purposes: Based on the construction site of the prefabricated greening retaining wall for the cutting slope of Luzhou Station of the South Sichuan intercity railway, this paper analyzes and studies the stress characteristics, displacement and deformation of the retaining wall structure by simulation, so as to determine the key technical parameters that are technically reasonable and economically feasible.
Research conclusions: (1) The prefabricated greening cutting retaining wall shall be assembled and constructed close to the excavated slope, and toe slabs and tenons shall be set if necessary. (2) When the toe slab width is 1 m, the wall displacement is significantly lower than that without toe slab. It is recommended that the toe slab width be set at 1~1.5 m. (3) The setting of anchor rod will significantly improve the stress and displacement of the prefabricated retaining wall. When the retaining wall is provided with anchor rods, the spacing of anchor rods has a great impact on the deformation and stability of the prefabricated cutting retaining wall. For the cutting slope of weathered mudstone, it is recommended that the vertical spacing of anchor rods be no more than 2.1 m. (4) The main performance of the wall is that the rib column is compressed, and significant stress concentration occurs at the connection between the rib column and the foundation slab. Therefore, the structural column reinforcement should be carried out reasonably, and the reinforcement design of the rib column at the foundation slab should be strengthened. (5) The research results have guiding significance in the popularization and application of cutting retaining engineering.

Key words： cutting slope prefabricated greening retaining wall toe slab and tenon anchor stock

收稿日期: 2022-09-26

PACS:

U213

作者简介: 司文明,1986年出生,男,高级工程师。

引用本文:

司文明, 张昕升, 唐元丽, 蒋楚生, 赵晓彦. 铁路路堑装配式绿化挡墙关键技术分析研究[J]. 铁道工程学报, 2022, 39(12): 24-29.
SI Wenming, ZHANG Xinsheng, TANG Yuanli, JIANG Chusheng, ZHAO Xiaoyan. Analysis and Study of the Key Technologies of Prefabricated Greening Retaining Wall for Railway Cutting. Journal of Railway Engineering Society, 2022, 39(12): 24-29.

链接本文:

https://tdgcxb.crec.cn/CN/ 或 https://tdgcxb.crec.cn/CN/Y2022/V39/I12/24

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