公路交通技术
公路交通技術
공로교통기술
Technology of Highway and Transport
2015年
5期
53-56
,共4页
预应力锚索%锚碇%应力%变形
預應力錨索%錨碇%應力%變形
예응력묘색%묘정%응력%변형
prestressed anchor cable%anchorage%press%deformation
根据某渡槽出口岸平衡锚碇的结构形式及其工程地质条件建立三维数值模型，研究岩体、预应力锚索和锚碇体的应力和变形的响应。结果表明：1）平衡锚碇受力范围大部分集中在锚碇体表面，传递至锚碇深部的最大主应力并不明显；2）在附加荷载作用下，锚碇整体表现为以前缘岩坎为支点，后部向上转动的变形模式，锚碇及其围岩的位移均处于毫米级别，其最大值约为13 mm，位移影响范围较小。
根據某渡槽齣口岸平衡錨碇的結構形式及其工程地質條件建立三維數值模型，研究巖體、預應力錨索和錨碇體的應力和變形的響應。結果錶明：1）平衡錨碇受力範圍大部分集中在錨碇體錶麵，傳遞至錨碇深部的最大主應力併不明顯；2）在附加荷載作用下，錨碇整體錶現為以前緣巖坎為支點，後部嚮上轉動的變形模式，錨碇及其圍巖的位移均處于毫米級彆，其最大值約為13 mm，位移影響範圍較小。
근거모도조출구안평형묘정적결구형식급기공정지질조건건립삼유수치모형，연구암체、예응력묘색화묘정체적응력화변형적향응。결과표명：1）평형묘정수력범위대부분집중재묘정체표면，전체지묘정심부적최대주응력병불명현；2）재부가하재작용하，묘정정체표현위이전연암감위지점，후부향상전동적변형모식，묘정급기위암적위이균처우호미급별，기최대치약위13 mm，위이영향범위교소。
This paper establishes a 3D numeric model in accordance with structural forms of balanced anchorage of some aqueduct out of port and studies response of rock mass,prestressed anchor cables and anchorage bodies to stress and deformation.The results show that 1)The most loaded zone concentrates on the surface of anchorage bodies,and the max.main stress transferred to deep part of anchorage is not significant;2)Under the effect of additional load,the anchorage integrally behaves as deformation mode in which the rear part rotates upward with front rock step as pivot,displacement of anchorage and wall rock is at mm level,of which the max.value is approximate 13mm,so the scope of influence is small.
