矿冶工程
礦冶工程
광야공정
2014年
6期
18-21
,共4页
高速公路%改扩建%边坡%边坡稳定性%FLAC3D
高速公路%改擴建%邊坡%邊坡穩定性%FLAC3D
고속공로%개확건%변파%변파은정성%FLAC3D
highway%renovation and expansion%slope%slope stability%FLAC3D
对广西柳南高速公路改扩建边坡工程的实际地质情况进行了调研分析，提出了台阶型截面开挖和抗滑桩＋锚索预加固开挖两种边坡拓宽施工方案。利用FLAC3D软件对两种方案加固效果进行了数值模拟对比分析，并且综合工程其它因素提出了合理的施工方案。结果表明：两种方案加固边坡后边坡安全系数和坡顶的竖向位移沉降都能满足规范要求，但采用抗滑桩＋锚索预加固支护形式对边坡能起到更为明显的加固效果，且对边坡坡顶竖向位移沉降较小，对于周边环境复杂的边坡更为适合。
對廣西柳南高速公路改擴建邊坡工程的實際地質情況進行瞭調研分析，提齣瞭檯階型截麵開挖和抗滑樁＋錨索預加固開挖兩種邊坡拓寬施工方案。利用FLAC3D軟件對兩種方案加固效果進行瞭數值模擬對比分析，併且綜閤工程其它因素提齣瞭閤理的施工方案。結果錶明：兩種方案加固邊坡後邊坡安全繫數和坡頂的豎嚮位移沉降都能滿足規範要求，但採用抗滑樁＋錨索預加固支護形式對邊坡能起到更為明顯的加固效果，且對邊坡坡頂豎嚮位移沉降較小，對于週邊環境複雜的邊坡更為適閤。
대엄서류남고속공로개확건변파공정적실제지질정황진행료조연분석，제출료태계형절면개알화항활장＋묘색예가고개알량충변파탁관시공방안。이용FLAC3D연건대량충방안가고효과진행료수치모의대비분석，병차종합공정기타인소제출료합리적시공방안。결과표명：량충방안가고변파후변파안전계수화파정적수향위이침강도능만족규범요구，단채용항활장＋묘색예가고지호형식대변파능기도경위명현적가고효과，차대변파파정수향위이침강교소，대우주변배경복잡적변파경위괄합。
Based on the in?situ investigation and analysis of actual geological conditions for the renovation and expansion project of Guangxi Liuzhou?Nanning Highway, two schemes were proposed for widening embankment, one is benching into the existing slope, the other is excavation with anti?slide pile plus anchor cable pre?reinforcement. Based on the analysis and comparison of the consolidating effect of two schemes by numerical simulation with FLAC3D, a technically sound construction scheme was proposed with more engineering factors taken into comprehensive consideration. It is found that two schemes after slope reinforcement result in the slope safety factor and vertical displacement at the top of slope all up to the standard. However, the second one with a better reinforcement and less vertical displacement is more feasible for the slope with more complicated surroundings.
