悬索桥隧道锚碇与临近构筑物相互影响分析  

Analysis and Study of Mutual Influences Between Anchorages of Suspension Cable Suspension Bridge Tunnels and Adjacent Structures

作　　者：夏国邦 喻正富 

机构地区：[1]云南普宣高速公路建设指挥部,云南宣威655400

出　　处：《公路交通技术》2016年第1期61-66,共6页Technology of Highway and Transport

基　　金：云南省交通运输厅科技项目(云交科2011(LH)12-a号)

摘　　要：在综合分析运用工程地质勘察资料的基础上,建立普立特大桥隧道锚碇主塔系统及山体稳定分析的工程地质概化模型。采用三维有限差分法模拟隧道锚碇、索塔基础、上方公路隧道及周围山体,对天然岩体、岩体开挖及施加设计荷载后等各阶段岩体的变形、应力释放及应力重分布、卸荷松弛区的范围、塑性区分布特点进行计算分析,并评价各构筑物围岩各阶段的变形稳定特征、相互影响情况及可能出现的变形破坏模式。On the basis of comprehensively analyzing and utilizing geological survey data of projects, this paper establishes engineering geological generalized model of main tower system of Pulite Bridge tunnel anchorages massif stability analysis. The paper adopts 3D finite differential method to simulate tunnel anchorages, cable tower foundations, above highway tunnels and surrounding massifs, etc. , calculates and analyzes natural rocks, wall rock deformation, stress release, stress redistribution, range of unloaded relaxation area and distribution features of plastic area after rock excavation and application of design load; and evaluates stable features of deformation at various stages of all structure rocks, mutual influences and possible deformation failure modes.

关 键 词：隧道锚碇 围岩变形 围岩稳定性 地质概化模型 岩体力学参数 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]