钢结构(第三版)戴国欣主编课后习题答案

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=16GN/m/__f'33FGHIJAK,max412*=1.2x10=12P(h>1.5y/t~=1.5712=5.2mm,h=3mmfminfᑁ-ᑖSAN=4•Z0.7W=1.22x2x0.7x8x125x160=2732802V=273.28KN3NiOQN,=4N——^=-xl000—--^=196.69KN22232N7OQNஹ=aஹN——^=-xl000———=530.03/C^11232abcA,Nஹ530.03/.>——;--------=--------------=296/71/7?,0.7"#
2x0.7x8x160ᑣg▭abG=296+8=304/71/7?<60%=60x8=480mm,o310mm஺Z,n2',——110/71/7?,M£0.7/?/"r'2X0.7X8X160ᑣg▭ab<=110+8=11Smm<60h=60x8=480mm,o120mm஺2f(2):☢;FGHIJAtu(ovw=8P஻y(h-6mmf2]?ᑁ-ᑖSAN2=a2N=§xl000=333KN,N௃=%N=§x1000=667KNabcA,ஹ|6672-----------------=-------------------------=3/2mm,M£0.)ᔙ;2x0.7x8x160

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2Tr,462.2Fx166.2=3.360xl(T*/2.231xlO8-VFVḄ⁐-A7=ᓝ-1.938x10"F£65158.72(4)^(5.295xIO-4F)2+[(3,36^^-938)x10^F]2<160nV28.04+18.86xl0^*F<160n6.85xlOY41607F&233577N=233.58KN3.3᝞3.82ᡠ¢£¤Ḅজஹঝஹঞ஺ᩞQ235B,ᩩE43',)*஺3.82⚪3.3(1)ᑁ-ᑖ᪆AV=F=98KN,M=F-e(2)☢ᦪcAo=10mm☢Ḅ,:193150x7x3.5+2x69x7x(7+12+3.5)+2x193x7x(—+7+12+7)----------------------------------------------------------------------------------=75.5/mn150x7+2x69x7+2x193x7

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²·¸᪗¶,¸c¹ḄÖb஺3.83>⚪3.5(1)ᑁ-ᑖ᪆AV=374KN,M=1122kN.tn(2)☢ᦪcA/=_Lx8xl0003+2x280xl4x5072=2.68xl09mm4x12S=280x14x507+500x8x250=2987440(”஻/wS=280x14x507=1987440(஻/wi(3)-cÙ374x1()3>2987440max=52.1N/mm21.1/"'=1.1x185=204N/mm2àáâ

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=1.CD.14G=532KN-vv44N@=d♦»minf=20x8x305=67AKN*min{NA,NA}=53.2KNK+Zy
=164000mm2(3)ᑁ-cN=…»ëì3-39.26KNTḄ-Aw½+ír164000N=___E____40.25x10◘6°=i4.73KN164000N“.ï=ᳮVḄ-A,io(n10ভM=]%+|ñ+22=739.262+14.73+10
2=46.4KN<%=53.2KN3.7᝞3.84ᡠA᪀òᩞQ235B,å᪝ãᑴå᪝஺জḄå᪝rঝóᔣ¤ḄÛÜḄå᪝஺4=4=170õ©஺

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N@=4.ö/=2--140=87.9KNN
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74=150஻஻஻&d=190mm஺2N=NA^—=350x—=2475KN,X22M=Nஹe=247.5x0.020=4.95KN-m72V2V=Nஹ.=350x—247.5KN,ᵫᡲ஺22NM-y247.5xlO34.95x1()6x120t=40.22KN

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ʤ☢:A“=3—3-do).Z‘min=(240—3x22)x14=2436óó2,N'=N——x0.5x3=600-----x0.5x3=500KN99b=+=5M:=205.3஻஻஺2ὃ⇋஺᝞B2Cᵨ116E16FGH.IJKLMNO%PQRE1KJᩞCᵨQ235JULVOWXYZ[\]E2KᦋᵨQ345JU,VOWXY_ᔲa℉c3]E3K᝞B;<>YZ330KNEVOeKL116fᔲ⌕h]᝞Li᪀⌼lCmnopqrf⌕h]PRE1KJᩞCᵨQ235JULVOWXYZ[\]s⊤uH6Ḅ☢xA=26.1cm?,i=6.51cm,i=1,S9cmxy\=—=|"=40<[2]=150,a☢Ls⊤u=0.941z65.7v

114=/°=2600=]384=]50,b☢Ls⊤u᜜=0.353vi„18.9NW(pAf=0.353x2610x215=198086N=198.1KN஺E2KᦋᵨQ345JULVOWXY_ᔲa℉c3?4=40a⊈,ᢥᐸ=48s⊤u᜜=0.9213454=138,b☢Lᢥ138.=164s⊤u᜜=0.265235NYZ33OKNEVOeKL116fᔲ⌕h?᝞,i᪀⌼lCmnopqrf⌕h]8uuuuuuuuuuuujuuZN=3WTKN>198.1KN,ᡠ᦮஺ᙠᔣᥛL¡O%஺/=£==69=£=150,b☢Ls⊤u᜜=0.757N<᜛¥=0.757x2610x215=42479IN=424.8KN>300KN,᦮஺4.6V+.§012W=;<>Y5000KNEVOeKL238m,6789஺⌕hVOH¨Jᡈª9.I«☢2஺PRH¨J2E1K¬⌱☢V®=60=᜛=0.807EbKE,N5000X103cocz,2eg-2——I஺8000ᑣA=--=--------------=28961/MW=289.61c",=i.=—=----133mm-(pf0.807x215xyA60⌱“W428x407x20x35,ᐸ☢x4=361.4஻?஻/,(=18.2஺஻]Lz=10.4cmv(2)$%4=&=R?=44KM]=150,b☢Ls⊤u᜜=0.8824=¶=^^=77<·ᑓ=150,b☢Ls⊤u᜜=0.707a=—=—5000x1()3_=1957Mpa

12ª9.I«32(1)¬⌱☢᪷»H¨J☢L¬⌱ª9.I«☢L᝞¼ᡠ½஺(2)O%¾ᦪA=420x32x2+400xl8=34080mm2/ஹ.=Â(420x4643-18xJ)3.4109W,/=2x-^x32x4203=3.95xl08/nm4400=Xv(2)᦮$%4=&=Æ(=254[Ç=150,b☢Ls⊤uᓄ=0.9534=¥=◤3=74<[/1]=150,b☢Ls⊤u%=0.726a=—=500°*10=()2.3Mpa2UL_ᔲfØᐰW=VO₹X3200KN஺(a)0>)

13PRO%EaK¼☢(1)O%¾ᦪR4=500x20x2+500x8=24000஻?஻/1on7=^x8x5003+2x20x500x(250+y)2=1.435xlO9mm4V/=2x—x20x5003=4.17xl08m/724'121.435X109”4-17xl°8=131.8^---------=244.5mm,i2400024000(2)᦮$%4=Þ=^^=41Â[/1]=150,b☢Ls⊤u=0.8954=à=ᚆâ=764·஽=150,b☢Ls⊤uᑁ=0.714131.8N1700xIO3b=—==186.7Mpa

14NlonnxlO3cr===226.8஻paN/=205Mpa,᦮஺SpA0.588x24000E3KÌÍ$%400—10b'o—=—V—=7.84E10+0.1x95K=19.5h400ð=ñ=40YZ1500KN,JᩞZQ235B,☢ùú஺PRE1K¬⌱☢RVû=70=>᜛L=0.751EbK3ᑣ4=஻1500X10=9289/??m2=92.89cm2,-0.751x215⌱2[32a,,ᐸ☢xA=48.50x2=97஺ü2,i=12.44cmy(2)$%ý;Ḅ᦮4=&=^^=60<[/1]=150,b☢Ls⊤u%=0.807er=-=1500X10,=191.6Mpa4=—=46()2-3()2=52ni=—==144.2mm,x452i1442b=——=--=327.7mm=>b=330mm,᝞ᡠ஺0.440.444!"#$Ḅ᦮'(

152=2.24cm,/,=304.7C/M4,i=2.51cm0]-☢/#$Ḅ0ᦪ:255?/,=2x[304.7+48.50'(^^)2]=16402c/=1.64x107஻el_7500OxT-=.__=58,?x130&=J1+B=V582+302=65<[R=150n(p=0.780xN1500xIO3——=--------------=198.3Mpa<=2\5Mpe1,H#$Ḅ᦮'(IJ஺(pA0.780x97x1()2x(5)LMḄNZ=30x2.51=75.3czn=753/nzn01⌱ᵨLMSTU-260x180x8,ᑣ4+180=753+180=933஻஻%,X4=930YY?ᑖ[\]^k1=L=3047xl°=3276mm31/,930LM\]^Z=ᓃ=—1ߟx(—X8X1803X2)=30470/nm3a255.21230470=9.326326797xlQ2x215cᔣefg==24535N8524535X9302=44705Na255.2j><93஺v/M=T<=k=-2--------=5.704X106^-/WM222XmnSTU=8ᵨ⊈?pᵨHqm?ᑣmrN"s^U4=180஻wz447056x5.704x1()6!"mruTf=44AMpa,J2=188.6A7pa0.7x8x1800.7x8xl80af2)2++44.4=160Mpa=f
'=160M/)a1.22

16yz{5.1|}~Ḅ᫡᝞5.53ᡠ?MU⚜ᑴM?m᫡஺}~ឤ₹Ḅ᪗ᒹ᫡U2.OZN/m2஺⌱᫡-☢?ᩞUQ345஺u1ஹ¡¢q,=(2+20)x3=66kNIinKq=(1.2x2+1.4x20)x3=91.2kNIm1710M>—ql£=—x91.2x62=410.4ZN-mx88m4104x1()6nW>———1324939mmJ=1324.9393xrf1.05x295x⌱145a1433cm3I=32241cm4x3ஹ!"u1)£^410.4xl06"4=272.8MpaY/=295Mp“1.05xl433xl032)ᢰ^___S_________66x600()4‘-384-384,2.06x105x32241x104=16.77mm>[v]=15mm⌱I50aI=46472cm4x5q,-l4566x60004v=------------=------------------------------------384EI3842.06x105x46472xlO4X3)᦮(u¥N"஺4)¦(u§U¨©?¥!"஺

175.3u5.54(a)ᡠḄª[᫡?ᐸ-☢U/¬¡¢[5.54(b)],ᩞᧇUQ235B¯᫡Ḅ°±²᫡³ᙳᨵ¶ᔣ[·¯ᙠ¹°₹(ºᒹ᫡)F=160AN(N)Ḅ¼ᵨB?᫡½ᔲ¿Àᐸ᦮'(ឋÂÃஹN"᫡]4=30x1+80x0.8+10x1=1045?/-1ÃÄÃÃq=104x1(F*X76.98=0.8RV/m“qFPI,C0.8xl22160x12“me…-B)€BOD4-BB"max=%È+1=1-2*-------+-------=497.3Ë•m84[2ஹN"°²$Í]V-IDXID680x0.8x40.5+10x1x81y+0.5=33.2cm30x1+80x0.8+10x1=AX0.8X8()3+(82/2—33.2)2x80x0.8+30x1x(33.2-0.5)2+10x1x(48.8-0.5)2=93440஺Y4lx934403W=—=-----=2810cmXYy33.2[3ஹÏᜐ]Ñ▬⊤3.1=>ᨴ=1.75=5x(1x3()3+1xf)=2330cm4yyᳮ=4.7cm>VAV1044=4%=600/4.7=127.7,,,,,ஹ(1x30)/12.ab=QU+/)=-—=0962ঢ=0.8(26—l)=0.8x(2x0.96—l)=0.7404320=L75xØx235x---127.72235=2.5>0.6Ú“07-Ú=0.957Ù=1.07—(Pb2.5[4ஹ᫡᦮'(N"M4Q74x106—u--------Û1849MpaY/=2]5Mpq(IJ)0.957x2810xl03

185.4uNÝ⚪5.1Ḅ°ßà᫡máâᔠ᫡?ᒹ⌱-☢ஹN"äåmrஹæῳMYèéḄßê஺ᩞUQ345?E50©mᩩìm஺uq=66KN/mkq=9I.2KNImF=66x6=396KNkí=91.2x6=547.2KNy=£x547.2=1368KN2M=1368x9-547.2x(6+3)=7387.2KN-m7387.2xl06”஺ïguW/,>--=---------------=23849xlOmm3xrf1.05x295x(1)⌱-☢u.fZ2295imin=-----:-------x-----x400x180001.34xl06\V]1.34xl()6T=1585mmhe==2x(23849x1஺3í=1786mñX᫡ῳMòh0=1700YYV,c1368x103>1.2—^—I/y_________________=5Jmmhf|•1700x170nvt=y/~h^/3.5=11.SmmwXóÛ12mmäå“ô|õ=ö49x9_12x1700=10629mmfh617006n÷=%ø%=170%170%=(340ø567)mmXbf=500mmᑣ஺=io62%oo=21.2mmX=24mm2£^!":

19%=(ùX12xù+500x24x862)=1.468x1073nlmI=-^(500xl7483-488X17003)=2.27X1010/WM4xú=%=2.27x□%74=2.597xl07/mt3A=500x24x2+1700x12=44400/wn27387.2xlO6=HO9MP"Yf=295mMp«-1.05x2.597xlO71368x103x1.468x1()7=73.7Mp"Yfஹ,=170Mp஺2.27xl0'°xl2(3)᦮(!"u%=3000/500=6Y16◤!".(4)]^!"u(5)äå²ῳMḄÿ
(6)᫡5x45x396qk==110%18185ql4_5110x(18000)4k--------------X-----------------------=32mmY[v]=384EI3842.06xl05x2.27xlO10X31368x103x(500x24x862)h>2.2mmf1.4x2.27xl0'°x200I"//#hf>8mmA1.5max=1-5A/24=7.3mmh/t=1700/12=142,0w80Y142Y170,012ᔣ45a2O.5஻o=0.5x1700=850mmY2/i=2x1700=3400mm0#a=3000᪷:;ᙠ=>₹@Aᵨᜐ./DE:V]=1368AW

20I=1368xl.5=2052KN-mmM,h.2052xlO61700.—rX=76.8Mpah2.597xlO71748V,1368xlO3T-~hJ~1700x12=61AMpawUW஻DE:M=820.8KNMi=1368x4.5—547.2x1.5=5335.2=P•R=768x^^?=199.68MPa%h2052820.8xl03r,.=---------=40.24A/P(21700x12IIIDEV=273.6KNniMUI=1368x7.5—547.2x(4.5+1.5)=6976.8ZNr/c6976.8c,11cX*nbill76.8x-------=26I.I2MPa2052273.6x1()3rHI------------=13AIMPa1700x120.85Y4Y1.25a=[1-0.75(4]0.85)]/=[1-0.75(0.97-0.85)]x295=268.45M4cr%,=3°°%7OO=L77ுLO"%□45—,cA=——%]^I...-1.627A1.2'4115.34+4(%)2N2352354`34+%ab7"=1.1=1.1X•V=70.6MPacr/9'/1.oz/IDE(76.8)2+(£LL)2=o.O82+0.903=0.985Y1268.4570.6

21199.68/1(4O24/nDE:1268.45;I70.6=0.553+0.325=0.878Y1261.12ஹ2/3.41ஹ2inDE:(-------)+(-----)=0.946+0.036=0.985y1268.4570.62ᔣghibs>+40=170°+40=97஻j,#140kk3030r>—=I4஺=9.3l஻2#10kls1515I=—X10x1403+140x10x(—+—)221222=10.4X1064A^i3x1700x123=8.8x106/nm43ht=>mnog

22N=1368547.2-7°-6X1700X12.475.2^+1000A=2x140x10+360x12=7120m/n2/=px10x(140x2+12q=2.07x1(V஻2m453.9mm2%=1°%3.9=32->%=0-929N475.2x103_,„.cc./c----=-------------=71.SMPaY/=295MPa(pA0.929X71202ntnogu5472N=1368+———=1641.6kN2wᵨ180x16xA=2x180x16+(180+100)x12=9120/wm2/,=16x(180x2+12q=6.86xl07mm46.86x107஺/]---------=oo./9120="°%6.7=20f%0.970N1641.6x103185.6MP஺Yf=295MPa(pA0.970x91201641.6x1()3=366.4MP஺yf=400Mpace2(180-40)x161641.6x10h>=1,ᵨ6஻z/஻>1.5VT6=6mmf4x0.7x(1700-2x50)x200

23~6.1ᨵ]4mḄ;ᵨQ235ḄHN400X200X8X13ᡂ;Ḅ490kN,5ᙳ20cm஺uᐸo@஺⊤A=83.37cm2,Ix=22775cm4,ix=16.53cm,iy=4.56cm,Wx=1139cm3oM=490X0.2=98kN.mu490xlO398xl06+2------------------1-----------------------------7=58.8+81.9=140.7N/mm2

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ÎÏȯ☢Õ;Öᵨ×Ø2—400X20,ᯚᑗÛ;ῳx]460X12Ý஺⌱ᵨ⌱ᵨ
ÎÏȯ☢Õ;Öᵨ×Ø2—400Þ20,ᯚᑗÛ;ῳx]460X12¢☢ᑁlox=14000mm,¢☢᜜lÒÝy=7000mmoᙳᒴÃ5M=1600X0.25=400kN.m¯☢ᱯឋA=400X20X2+460X12=21520mm2c20x4003460X123=2.134x10஺஻/2x--------+--------yWx=Ix/(h/2)=1.019X109/(500/2)=4.076X106mm3i=(I/A)1/2=(1.019X109/21520)I/2=217.6mmxxiy=(Iy/Aâ=(2.134X108/21520)1/2=99.6mmX=l/i=14000/217.6=64.3<[X]=150xoxxX=l/i=7000/99.6=70,3<[X]=150㹺⌕¼yoyyuÇ+ᐸ1600xl03400xlO6--------------------1-------------------------------T=74.3+93.5=167.8N/mm2

25¢☢᜜᦮¦§¨uX=loy/iy=7OOO/99.6=7O.3<[X]=15Oy¬b®¯☢⊤;(py=0.749(p=1,07A2/44000=1,07-70.32/44000=0.958<1.0by3=1.0txN/((pA)+3M/(