压力分散型锚索在向莆铁路的应用

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摘要研究目的：向莆铁路尤溪车站位于福建省低山区,车站开挖路堑边坡高度大、工程地质条件差。为保证边坡稳定并保持车站绿化环境,设计采用了近年一项新的锚固技术)压力分散型预应力锚索加固;坡面采用框架梁内三维排水柔性生态系统+喷混植生防护。

研究结论：本文从压力分散型锚索的加固机理、压力分散型锚索的设计计算和施工注意事项等方面进行了全面的阐述。从不同锚固体系的对比分析进而确定向莆铁路尤溪车站采用压力分散型锚索的适宜性,结合工点工程地质条件进行了工点压力分散型锚索的代表性设计计算,对于压力分散型锚索的施工工艺和施工注意事项进行了深入的探讨。文章内容和结论对于山区地质条件复杂铁路高边坡、高速公路高边坡工程预应力锚索加固设计和施工具有借鉴意义。

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	刘好正

关键词 ：向莆铁路, 路堑高边坡, 压力分散型锚索, 锚固体系, 加固

Abstract：Research purposes: The Youxi Railway Station of the Xiangtang -Putian Railway lies in the low-terrain mountain area in Fujian Province with poor engineering geological conditions. Construction of this station needs excavation of high cutting slopes.To ensure the stability of the cutting slopes and keep the greening environment around the station, a new anchor technology developed in recentyears, namely, the compression dispersion -type anchorwas used. It can be described as the flexible ecosystem in the framework on slopping surface resulted from the three dimensions drainage system and the plants and biology protection owing to the spray sowing.

Research conclusions: In this paper, the introduction is given to the all-round reinforcement mechanism, design and calculation works of the compression dispersion -type anchor and the related matters for caution in the engineering application. Through the comparison and analysis of various anchor systems, the adapt ability of adopting the compression dispersion -type anchor to the Youxi Station was determined. The typical design calculation of the compression dispersion -type anchor was made according to the engineering geological conditions. The detailed discussion was made on the construction technology and the related matters for caution in the engineering application. The compression dispersion -type anchor presented in this paper can be as the reference to the design and construction of high cutting slopes for railway and highway in the mountain area with complicated geological conditions.

Key words： Xiangtang -Putian Railway high cutting slope compression dispersion -type anchor anchor systems reinforcement

收稿日期: 2010-08-22

PACS:

U455

作者简介: 刘好正, 1974年出生,男,高级工程师,注册岩土工程师。

引用本文:

刘好正. 压力分散型锚索在向莆铁路的应用[J]. 铁道工程学报, 2010, 27(10): 20-25.
LIU Hao-zheng. Application of Compression Dispersion-type Anchor in Construction of the Xiangtang-Putian Railway. 铁道工程学报, 2010, 27(10): 20-25.

链接本文:

http://tdgcxb.crec.cn/CN/ 或 http://tdgcxb.crec.cn/CN/Y2010/V27/I10/20

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