水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
3期
31-35
,共5页
隧道工程%挡土墙%稳定性分析%数值计算
隧道工程%擋土牆%穩定性分析%數值計算
수도공정%당토장%은정성분석%수치계산
tunnel project%retaining wall%stability analysis%numerical calculation
以贵阳市轨道交通1号线下麦西隧道施工下穿环城高速公路交通涵出口挡土墙为例，采用弹塑性理论、摩尔库仑准则，利用 Midas Gts 软件系统数值分析施工过程中隧道衬砌内力和围岩的应力、变形和塑性区，对比不同支护形式时隧道衬砌内力、围岩塑性区等的差异。计算结果表明：在隧道开挖过程中，当隧道开挖到距离挡土墙位置20 m 时就应该对挡土墙采取支护措施，特别应加强挡墙的底部，东南角，西南角的加固措施。
以貴暘市軌道交通1號線下麥西隧道施工下穿環城高速公路交通涵齣口擋土牆為例，採用彈塑性理論、摩爾庫崙準則，利用 Midas Gts 軟件繫統數值分析施工過程中隧道襯砌內力和圍巖的應力、變形和塑性區，對比不同支護形式時隧道襯砌內力、圍巖塑性區等的差異。計算結果錶明：在隧道開挖過程中，噹隧道開挖到距離擋土牆位置20 m 時就應該對擋土牆採取支護措施，特彆應加彊擋牆的底部，東南角，西南角的加固措施。
이귀양시궤도교통1호선하맥서수도시공하천배성고속공로교통함출구당토장위례，채용탄소성이론、마이고륜준칙，이용 Midas Gts 연건계통수치분석시공과정중수도츤체내력화위암적응력、변형화소성구，대비불동지호형식시수도츤체내력、위암소성구등적차이。계산결과표명：재수도개알과정중，당수도개알도거리당토장위치20 m 시취응해대당토장채취지호조시，특별응가강당장적저부，동남각，서남각적가고조시。
Taking the construction of Xiamaixi Tunnel in Guiyang City Rail Transit No .1 Line crossing underneath the ring express highway for example and by using the elastic-plastic theory ,Mohr-Coulomb criteria and Mids-Gts software , the internal force of tunnel lining and the stress ,deformation and plastic area of surrounding rock during the construction were calculated and analyzed systematiclly and numerically ,and the differences between them under different supporting were compared .The results suggest that when the distance of the tunnel working face is 20 meters to the retaining wall , the supporting measures should be taken on ,especially the measures should be taken on for reinforcing the bottom as well as the southeast corner and southwest corner of the retaining wall .
