摘要
在分析格构锚固结构受力的基础上 ,将格构梁简化为受集中力作用的弹性地基上的梁 ,提出了格构锚固结构的力学模型 ,利用 Winkler弹性地基上梁的解析解对格构梁进行了内力和变形的分析 ,发现格构梁的受力状况受弹性特征λ、梁格间距 ls以及悬臂长度影响 ;建议梁长 l与λ宜满足 lλ≥ 2π;采用较小间距的格构梁以及小吨位锚索 ,间距宜满足 lsλ<π/ 2 ,悬臂长度取 (0 .3～ 0 .5 ) ls。
Lattice frame anchor structure is a new method of landslide control.This paper proposes a mechanical model of lattice frame anchor structure and studies the design theory of RC lattice beam by analytic solution of the beam on Winkler elastic foundation quantificationally.Lattice beam is reduced to be the beam on elastic foundation acted by concentrated force.It is concluded that lattice beam is affected by the elastic characteristic λ ,space between beams l s and cantilever length.Lattice beam should be a long continuous beam and lλ≥2π . space between beams should be short and l s λ <π/2.Cantilever length relates to space between beams,but not to λ .Suggestion is that cantilever length is (0.3-0.5) l s.The lattice frame anchor structure is applied to control the project design of Taijitoudong slope in Badong County of the Three Gorges reservoir region.
出处
《地质科技情报》
CAS
CSCD
北大核心
2002年第3期89-93,共5页
Geological Science and Technology Information
基金
国家自然科学基金资助项目 (4 0 0 72 0 85 )
关键词
滑坡治理
格构锚固结构
格构梁
WINKLER地基
解析解
力学模型
landslide control
lattice frame anchor structure
lattice beam
Winkler elastic foundation
analytic solution
