商师土力学与基础工程第三版(赵明华)课后习题答案武汉理工大学出版社.pdf

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1、《土力学与基础工程》第三版�赵明华�课后习题答案22.2dser+drwd(1−n)swrwswS1=(2)=(3)s=dr1+e1+envm1v=1vv=ev=v+v=1+edse=d=svsvsvvpsswmw100%m=dv=dw=100%m=wm=wdssswswwsswmsm=m+m=d(1+w)swswms1=dvdsw=d1+evwd2wswd=ses=100%s=⇒rrsrvevmd(1+w)d(1+w)rdwr+drser+drswswswswrwswr=g=g=g===v1+e1+e1+e1+evenvwdvd(1−n)3vws=sn=100%n=⇒e=s=100%

2、=rv1+e1−nvenv2.3v=1s33d=2.70=32.2%=1.91g/cm=1.0g/cmsw'2.506srr33v=1,d=2.70,w=32.2%,=1.91g/cm,=1.0g/cmssw2d(1+w)2.70(1+0.322)1.0swe=−1=−1=0.871.9131v=e=0.87cmv32v=wd=0.322*2.70=0.87cmws33v=1+e=1+0.87=1.87cm4m=d=2.70*1.0=2.70gssw5m=wd=0.322*2.70*1.0=0.87gwsw6m=m+m=3.57gswwdv0.87sw7s=*100%=*100%=10

3、0%rev0.87v8''ds−12.7−1*103r=g=g==9.1kN/mw1+e1+0.8732.472cm129.5g121.5g2.7wesrrrr'r,satd3m129.53v=72cmm=129.5gm=121.5gd=2.7===1.799g/cmssv72mm−m129.5−121.5(1)ws*100%w=*100%==*100%=6.6%msm121.5s3mm121.5ssds=⇒vs===45vv=v−vs=72−45=27vd2.7swsv27m129.5−121.52vwe===0.60v===8wv451swv83ws==*100%=29.6rv27

4、v34r=g=1.799*10=18.0kN/mms+vvw121.5+2735r=g=*10=20.6kN/msatv72'ms−vsw121.5−4536r'=g=g=*1010.6Kn/mv72ms121.53r=g=g=*10=16.9kN/mddv72rrrr'satd2.52.6832.0%ers=100%d=2.68w=32.0%rsvmvvvs=w*100%=100%⇒v=vw=w*100%=ww=vw⇒m=vwrwvsvmmmwvsssmvsm=dv∴vwv=dvwd=⇒=dvsssswsswvssvwswvdvwvssQe===dw=2.68*0.32=0.86sv

5、vssds(1+w)2.68×1+0.323∴r=g=*10=19kN/mw1+e1+0.8632.61.77g/cm,9.8%2.670.4610.943eDr3=1.77g/cmw=9.8%d=2.67e=0.461e=0.943sminmaxds(1+w)w2.67∗(1+0.098)e=−1=−1=0.6561.774e−e0.943−0.656maxD===0.595re−e0.943−0.461maxminQ0.67>D>0.33∴r32.7=1.66g/cm,d=2.69s40%w?3dsw2.69∗1=1.66g/cmd=2.69s=40%e=−1=−1=0.620ds

6、r1.66dse0.40∗0.62rw==*100%=9.2%d2.69s32.8w=28.5%,r=19kN/m,d=2.68,s>220.50.50.250.20.075<0.075mm9.418.621037.513.5%12343mN=1410.075mm9.4%+18.6%+21.0%+37.5%=86.9%50%d(1+w)2.68∗(1+0.285)∗1sw2e=−1=−1=0.811.9wd0.285∗2.68ss==∗100%=94.3%re0.8134N=1410

7、=35.4%LP5w−wp36.4−35.41I=w−w=48−35.4=12.6I===0.08pLpLI12.6p210