土力学与基础工程课后思考题答案.pdf

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1、土力学与基础工程课后思考题答案土力学与基础工程课后思考题答案222.211swdde=+(2)1rws ws erd re+=+(3)(1)Srwdnsn=1sv=vsvev=vve=1svvvve=+=+sssmdv=1wpssswswmd vd=wsmwm=100%wsswmwmwd=(1)swswmmmdw=+=+1sdmv=1swdde=+2wrvvsv=100%srwdse=srwds e=(1)(1)11swswdwdw rmrgggvee+=+1sws wd wrd re+=+1rws ws erd re+=+3vvnv=100%11enneen=+wrvvsv=100%=swd

2、e=(1)svdnn2.31sv=sd=2.70=32.2%=1.913/g cm31.0/wg cm=2.506rsr1sv=,2.70sd=,w=32.2%,=1.91g/3cm,31.0/wg cm=svsvvv vveve=+w wsm mm m1 10 00%0%(1)1)swsw(1)1)dwdw(1)1)1)sw=+=+dwdw(1)1)veve=+ve1dw wm mw wm=wm100%0%s s3(1)2.70(1 0.322)1.0110.871.91swdwe+=13vv0.87ecm=20.322wsvwd=*2.70=0.873cm311 0.871.87ve=+=

3、+=3cm42.70sswmd=*1.0=2.70g50.322wswmwd=*2.70*1.00.87g=63.57swmmmg=+=7srwdse=wvvv*0.87100%0.87=*100%=100%812.7 1110.87swdrgge=+*1039.1/kN m=2.4723cm129.5g121.5g2.7wersrsatr rdr,372vcm=m=129.5g121.5smg=2.7sd=3129.51.799/72mg cmv=(1)wmwms=*100%=ssmmm*100%129.5 121.5121.5=*100%=6.6%7070g g2222*2 2.7070*

4、1.0wggggw0.8787g g=0.8787100%0%0=1 1s sd ds sggggggggsggggsgggggggggg+e e4ssswmdv=121.52.7sssmvd=45=724527vsvvv=22745vsvev=0.60129.5 121.581wwwmv=3827wrvvsv=*100%=29.641.799rg=*10=18.0kN/3m5svwsatmvrgv+=121.52772+=*10=20.6kN/3m6121.54572sswmvrggv=*1010.6Kn/3m121.572sddmrggv=*10=16.9kN/3msatrrdr r2.5

5、2.6832.0%er100%rs=2.68sd=32.0%w=wrvvsv=*100%=100%wvvv=wsmwm=*100%=wwsvm=vwsvmvwsvmw=ssswmdv=ssswmd v=vwsswvd vw=vssvd v w=vsssssvd v wed wvv=Q=2.68*0.32=0.86(1)2.6811 0.86swdwrge+=+1+0.32*10=19kN/3m2.61.77g/3cm,9.8%2.670.4610.943erD31.77/g cm=w=9.8%2.67sd=min0.461e=max0.943e=(1)1swdwe+=2.67(10.098)1

6、1.77+=0.65623232.0%0%w=wvwvvvvvwvwvvvvvvv68w wsmm m=*1 10000%=swvwvwv vwvws sd wd ws=2 2 685maxmaxmin0.9430.6560.5950.9430.461reeDee=Q0.67rD 0.332.7=1.66g/3cm,sd=2.6940%w?31.66/dg cm=2.69sd=40%rs=2.69 1110.6201.66swdde=0.40 0.62w2.69rss ed=*100%=9.2%2.8w=28.5%,r=19kN/3m,2.68sd=,mm220.50.50.25 0.20.0

7、750.075%9.4 18.621037.513.512343mN=1410.075mm9.4%+18.6%+21.0%+37.5%=86.9%50%2e=(1)2.68(10.285)1110.811.9swdw+=0.285 2.68100%94.3%0.81srwdse=34N=1410N152.9w=36.4%Lw=48%Pw=35.4%.(1)PILI(2)w=36.4%Lw=48%Pw=35.4%0 0.5.50 0.25 08.6 621213m3md d25 0.20 0.0 0750 075mm1)21 1swsw1)1)1)1)swsw=2 28614835.412.6p

8、LpIww=36.435.40.0812.6pLpwwII=210pI170LI=0.080.252.102.35a.b23.50m23.20m20m1abi25k=210mm/sabvh12mQQ=325k=510mm/s0i=0.00511223.5023.200.01520hhiL=2vki=5*210*0.0157.5=*410/mm s7.5Qrst=*410*3600*1*6102.7=*3310/mh*2m3()5bvk ii=*510*0.015-0.005=0.05*5/mm s105=*710 mm/s1.8=*610m/h66321.8 101 1 1.8 10/.Qvs

9、tmhm=2.11180g18%25%122 23 3.5 50 02 2=1071180mg=118%w=225w=%Q11wsmwm=*100%=18%1swmm+=180sm=152.54g1wm=27.46g22wsmmm=*100%=25%20.25wm=*152.54=38.135g38.135-27.46=10.7g2.12w(%)17.215.2 12.2 10.08.87.4P(g/cm)2.062.10 2.16 2.132.031.89=2.65opwd2.061.758110.172dw=+d=1.823d=1.925d=1.936d=2.0310.088+=1.881

10、d=1.760maxd=1.93610%sd833.13.313.111 117czrh=*2.0=34.0kpa2cz=34.0+22r h=34.0+19*3.8=106.2kpa(1)(1)1(1)swssdrdrredw=+(2.74 1)18.22.74=1+0.41=8.197kN/3m33106.2106.28.197czr h=+=+*4.2=140.6kpa r=319.6 109.6/satwrrkN m=44140.6140.69.6czr h=+=+*2.0=159.8kpa3.23.313.24159.8(4.22.0)221.8wrkpa=+=3.33.32250k

11、N/m3/5.17mkN=034755a3434.0+0+1919*.8=8=1 10 06 6.2 2k kpk1)(1)1)sdr1)dwdw(1)1)sdrdw(1)1)(2 2 7=31 106 6r hr h3+=+=+1 101 1993.3G=Gr Ad=20211=40kN;250401452FGpkpaA+=0cr=d=17.5*1=17.5kpa0145 17.5127.5cpp=kpa0-3Z(m)z/b1c104()zcp kpa=0000.250127.51220.13769.872440.07638.763660.05226.524-7Z(m)z/b(aefc)1c

12、z/b(befd)2c1202()()zccp kpa=400 0.2500.0,25 0 520.67 0.2292 0.137 23.49641.33 0.1794 0.076 26.27762 0.1376 0.052 21.685-5Z(m)z/b1c102zcp=8210.20552.285040401452 2+50=cr r=0 0pppp0 0pppppp45kpakd=17 7.5 5*1 1=11 14 45 5c c=z z/b/04 4103.43.33mmz0.2=3.4(a)Aadgf4aemb1lb=1zb=30.175c=fhmb:10.175c=mcghedc

13、m:2lb=2zb=240.120cc=1z=20.175+0.120200=118kpaBAemqj:2.5lb=1zb=10.202c=meil:1lb=1zb=20.175c=22(0.2020.175)20010.8zkpa=m118 10.8128.8zkpa=+=b11 1=30 0.1 17575c=175:2l lb b=12012011321.5lb=21.3331.5zb=10.170c=1z=40.170200=136.24kpa(2)0100pkpa=321.5lb=21.3331.5zb=10.098c=2z=20.098100=19.62kpa(3)0100pkpa

14、=321.5lb=21.3331.5zb=10.170c=3z=20.170100=34kpa(4)0100pkpa=1c=0.0724z=20.072100=14.42kpaz=136.24+19.62+34+14.42=204.28kpa3.5mb2=md1=3/0.18mkN=kNF600=mkNM=100mz0.2=3.5G=rgAd=20221=80Kn21166wbl=228463=maxFGpA+=+MW=600802 2+10043=245kpaminFGpA+=-MW=600804+-10043=95kpa18cdodr=1=18kpa0cdpp=0max227pkpa=0m

15、in77pkpa=z.62 2+3+34 4+1414 4m m2=2=20404.2 28 8k kpkmdmdF Fmzm02 0222 21 1=116666=2 212077pkpa=1lb=1zb=1c=0.1751z=0.17577=13.475kpa0150pkpa=10.1086c=20.1086z=150=16.29kpa2z=13.475+16.29=29.77kpa3.6T3.3420/150mkNp=A10m3.6:abAn:2054lb=102.54zb=10.114c=defA:1234lb=102.54zb=20.107c=cmAk:1lb=102.54zb=30

16、.061c=1230(242)zcccp=+=20.114+40.107-20.061150=80.1kpa3.73.35ABCDkPap100=G6mMz2 2c c3 30.0c c=0 0.0 061611 150=50=611(2 2z zc=+50=80.1 1k kp pk k k a a133.7AEGH121.558lb=60.758zb=10.218c=BEGIlb=82=4zb=62=32c=0.093DHGFlb=123=4zb=623=3c=0.135CFGIlb=32=1.5zb=62=340.061c=M12340()CzcCCCP+=+=(0.218-0.093-

17、0.135+0.061)100=5.1kpa1444.121asE4-1#111121 2210.9520.9360.000160.016200 100aaeepMppp=11 211 0.95212.24 150.16SaaeEMpMp+=#211 20.9950.9050.0009100ap=1 0.9952.2240.9saaEMpMp+=1.63GEEGktatanns+=)(=176+00.5/51.6=1.71.3k k2 21 1.6 60 0k kN/mN/m2 5 5+m mkN3/m7 7)5 5 2 22.7 5 5=1.6 615 m m266-66-76-753/0.

18、22mkNk=6-7222)cos()cos()sin()sin(1)cos()(coscos+=ka=222)cos()cos()sin()sin(1)cos()(1520152015351535152020cos2035cosooooooooooooo+=0.526Ea=kha221=0.518620.526=170.44mkN(2)G=0.5(0.8+2.98)622=249.48kN48.24910=x0.560.422+0.56(2.98-0.8)2231(2.98-0.8)+0.8=1.05 m321)(c cososs(s(+1)co os(s(in()s()s s)s s202

19、020c co os(s(co0o027zExExkfftaaGxz+=0=2cos424.1703)8.098.2(28.0sin424.17005.148.2493535+oo=1.73GEEGktatanns+=)(=3535cos424.170sin55.0424.17055.048.249oo+=1.376-8b=3md=12m3/5.18mkN=kPac15=o20=crp4/1p6-81dcdPcr002cot)cot.(+=2.15.18218020cot)cot152.15.18(2020+ooo=152.68kPa2ddcdP00412cot)4cot.(+=2.15.18

20、218020cot)435.18cot152.15.18(2020+ooo=181.23kPa6.9b=1.5md=2.0m3/2.18mkN=kPac0.30=o22=4/1p36.91=0P41=0.22.18218022cot)45.12.18cot0.300.22.18(2222+ooo=322.61kPa21801802020o1515 c c2020+1515od d0)4 4+2.15.1815.2+5.18 5.180202018cot ot20202020+18cot ot2020ooo28=22o)tanexp()2(45tan2+=oNq=)tanexp()2(22224

21、5tan2ooo+=7.8Nc=16.9N=6.9NNNPdqcqcu4.02.1+=1.230.016.9+18.22.07.8+0.418.21.56.9=967.668kPa3PPu=322.6kPa3Nc=16.9Nq=7.8N=4.11=iiiqc02.1=sc375.1=sq6.0=s0=0=1=bbbgggqcqc333.15.10.2=bddc=1+0.4arctan1.333=1.3729.1333.1arctan)sin1(tan2122222=+=oodqd=1bgidsbNbgidsNbgidsNPqqqqqqcccccccqc21+=30.016.91.21.37111+18.2 2.01.3751.29117.8+0.518.21.54.11110.61 102.1 02.=cs=bg gg gq qg3 33 33=3=29=1370.69kPaP=Pu/3=456.9kPa