地震和暴雨工况下边-滑-坡稳定性分析方法评价-何专

29320096BulletinofSoilandWaterConservationVol.29,No.3Jun.,2009:2008-09-11:2008-11-23:(973)/0(2008CB425802);/0(SC20060090);/1050(XZJE2006-01):(1985)),(),,,E-mail:[e-mail]()何专,姚令侃(,610031):()(),GEO-SLOPE,(),,,,(),,()():;;;;:B:1000)288X(2009)03)0178)05:X4,P315AssessmentonMethodsofAnalyzingSlope(Landslide)StabilityUnderEarthquakeandRainstormHEZhuan,YAOLing-kan(CollegeofCivilEngineering,SouthwestJiaotongUniversity,Chengdu,Sichuan610031,China)Abstract:Thejointeffectofearthquakeandrainstormistheextremeconditionwhichcauseslandslideinna-ture.Thecurrentcodestoevaluatetheimpactsofbothearthquakeandrainstormonslopestabilityarejustasimpleadditionofthetwofactors.ByusingtheGEO-SLOPEsoftwareandemployingdynamicselementinf-initeandlimitequilibriumtheory,thispaperevaluatesthestabilityofthetypicalslopesitesalongtheS-ichuan)TibethighwayandXichang)Panzhihuafreewayunderthecouplingofearthquakeandrainstorm,inordertofindthedifferenceofsimpleadditionandthecouplinganalysisofearthquakeandrainstorm,andalsoevaluatestheapplicabilityofregularcomputationalmethods.Researchhasfoundthatthecouplingofearth-quakeandrainstormhasmoreseriousimpactstoslopestabilitythanthesimpleadditionofimpactofearth-quakeandrainstormalone.Keywords:slope;landslide;earthquake;rainstorm;stabilityevaluation()290,90%[1],300km×2008/5#120213,135km,334,)40%[2-3],()5656,(),;(),,,(),,[4-7],GEO-SLOPE,()1GEO-SLOPE分析方法GEO-SLOPEGEO-SLOPEIn-ternationalLtd.,()QUAKE/WSLOPE/W,,,,,GEO-SLOPE(),,1.1QUAKE/W(),QUAKE/W,QUAKE/W(),SLOPE/WNewmark()[8];{Fg}=[M]{ag}(1):[M])));{ag})))1.2[9]QUAKE/WSLOPE/W(),,,uwu(x,y)=a+bx+cy+ENi=11K(hm-hi)2lg(hm-hi)2(2):x,y)));h))),h=hm-hi=(xm-xi)2+(ym-yi)2;a,b,c,K1,K2,Kn))),:K0K(h1-hn)1x1y11xNyN000000K1abc=u1uN000:K(h)=h2lgh1.3,,QUAKE/W,(),SLOPE/W()QUAKE/W,,,,,[10],,(),QUAKE/WuexcessRc3c=12+1Parcsin2(NNL)1a-1(3):uexcess)));Rc3c)));N)));NL)));A))),0.71()11.4GEO-SLOPE,(S.F.)(ESr)(ESm),1793:():S.F.=ESrESm(4):Sr=sB=B1cc+(Rn-ua)tanUc+(ua-uw)tanUb2Sm=SB;s)));B)));Rn)));cc)));Uc)))(Rn-ua);ua)));uw)));(ua-uw))));Ub))),Rn,SmQUAKE/WRn=Rx+Ry2+Rx-Ry2=cos2H+Sxysin2HSm=Sxycos2H-Rx-Ry2sin2H:Rx)))x;Ry)))x,y;Sxy)))x,y;H)))x1.5()(),()Newmark()1.0,Newmark,,,;,;,Newmark[11-12]2典型工点分析,,(2)22.12.1.1地形地貌,,,,,Ò,,2b~5b,25m2.1.2地层岩性(Qme4);(Qdel4);(Qdl+el4);(Qal+pl4);(Qfgl3);(J2x)2.1.3地质构造及地震烈度Ø,)(),,,),,,,0.90s,0.20g2.1.4水文地质条件(1)Qdl+el4,Qfgl3(),,,;,(2),,,2.2GEO-SLOPEQUAKE/W,53,3~6m,,,2~4m(),,()3318029,(4),()4,1.0,Newmark2~9mm,,,;,,1.0,,,,1,0.558,0.076m,,,0.974,1mm,(1)2)1(0.4g)(0.2g)(0.2g)0.8421.1311.4771.712+0.5530.7240.9741.1372cmNewmark(0.4g)(0.2g)(0.2g)44.7000+55.87.60.02)3地震和暴雨作用叠加分析与耦合分析的差别研究,10537,105,Ø,,,,,,,65kmØ,,,,,,,,,(),,,0.067,0.2,0.4g[6][13-14]10,()33()K4096+603)6621.2061.0151.1110.7660.9220.5450.7570.413K4103+041)2631.3010.9211.2690.6641.1240.5891.0510.584K4097+450)5781.2211.0511.1600.7251.0640.5280.8820.493K29+9601.1230.8100.9770.6630.8670.6130.8060.537K33+150)4001.7121.1371.4770.9741.1310.7240.8420.553K41+4901.1891.0161.0380.8330.9290.7150.8330.580K47+5001.1211.0091.0720.9590.9480.8310.8610.727K49+5202.2011.9022.0481.7341.9471.5321.8051.488AK0+180)3001.0740.9500.9940.8370.9280.7820.8720.734K108+6421.8461.4921.6811.3361.3361.0711.0500.8401813:(),(4)(1)()7.5%,18.5%,27.6%(2)()18.9%(3),()32.5%,41.7%,48.4%;,12%426.4%37.4%46.5%32.5%41.7%48.4%,1(2)2,;,,[(3)],2,3;,(2),(),4结语(1),(),,,(2)()(),()(3)(4),,)GEO-SLOPE,(),,[][1],,,.[J].,2005,28(3):17-22.[2].[J].:,2008,35(4):366-370.[3],,,.5#12[J].,2008,26(3):272-275.[4].(JTJ044-89)[M],:,1999:6-7.[5].(GB50330-2002)[Z].,2002:25-27[6],,.[J].,2008(4):1-3.[7],,,.[J].,2007,26(1):3590-3595.[8].[J].,2007(9):65-67.[9],.[J].,2008,29(4):1061-1066.[10]CHENChuan-sheng,JIANGXin,ZHANGXu.Liq-uefactionsusceptibilityofsoilswithclayparticlesfromearthquake-inducedlandslides[J].ResearchofSoilandWaterConservation,2008,14(5):276-278.[11],.[M].2.:,1996:532-535.[12],.[M].:,2002:35-40.[13],.[J].,2007,18(4):20-22.[14],.[J].,2004(9):64-65.18229