文档介绍：某公路边坡支护设计
摘要
滑坡是现阶段公路工程建设过程中经常遇到的地质灾害现象,随着中国国民经济的迅速发展,工程滑坡灾害问题更是日趋严重,如何解决象滑坡这样的地质灾害现象,是公路建设者面临的一个严峻的问题。
在公路工程建设中,涉及到大量边坡防护工程。用于边坡防护的结构体系多种多样,比如预应力锚索、锚杆、抗滑桩、挡土墙等等。
抗滑桩支护是加固治理滑坡的一种行之有效的方法,它施工简便、快速、加固效果好,己经在世界各国的滑坡治理中得到比较广泛的应用。
近年来,一种结合锚和坡面结构的新型边坡防护体系,即混凝土格构锚固体系,已大量运用于边坡防护工程中,它是通过钢筋混凝土格构梁将锚固力传递给坡体,改善坡体应力状态,使坡体受压,产生抗滑力,从而达到稳固坡体的目的。
本设计通过方案的选择,主要采用格构锚固体系对拟加固边坡进行治理。经过施工工艺、工程量、造价等方面进行比选,确定格构梁锚固体系支护方案。
关键词:边坡治理,预应力锚索,格构梁
A Way Slope Support Design
Abstract
Landslide is mon geological disaster which we usually met in our speedway project. It induce a large number of loss every year. With the rapid development of China's national economy, the problem of landslide disasters is growing. How to deal with such thing is a serious challenge for way builders.
Slope retaining is an important problem which is usually involved in the speedway project. Many kinds of measure have been used for the slope retaining, such as anchor bar, prestressed anchor, pile and retaining wall.
As for its simple and fast construction and its good strengthening effect,anti-slide pile is a very efficient measure in the measures of landslide treatment, which is widely used all over the world.
Nowadays,a pound structure of lattice beam and prestressed anchor is widely used for preventing and remedying landside. The anchor force is transferred by the lattice beam to the slope body, and results in pressive stress in the slope body and the stress distribution in the body is improved.
The treatment scheme, of slope reinforcement mainly adopts Framed anchor Structures and Anti-slide Pile Retaining Structure in the design. paring Study of Construction Technology, Engineering Amount and Engineering Cost, and finally choice the Supporting Scheme.
Keywords: Landslide Treatment, anti-slide pile, prestressed anchor lattice beam.
1 绪论
问题的提出
随着我国西部大开发的推进,长江三峡库区、三江地区、红水河等能源基地的兴建加快,同时由于经济发展的要求,我国公路的建设也日益加快,因而边坡加固在国民经济建设中占有日益重要的位置。支档加固工程作为滑坡防治的有效方法因而备受关注。
公路建设对国民经济增长起到了巨大的推动作用,提高了人们的生活质量,但同时对生态环境造