《结构力学》期末复习题答案

。图。1。。图20图CA图PPPBA3图图杆杆杆FPFPC4图2图2BB2图次5图图次。图6ACACACACFPAC有。图个个个6717.用位移法计算图EA=∞，则基本未知量有。图个个个3232332231。。8FF0BPRM0F0CCRFPF0M02FlFl-3lF0FFAPPPF0FFFFFF0yPRAP9图11Mqaaqaqa0022C22M0F0CfH则FPFBBP11MMdsF1ABEIEAAP1p1MMdsEIAP1B1B112图1Xc11图17.从几何组成上讲,静定和超静定结构都是几何不变体系图F0F90kNyAyF0F0xAxM2031.540330kNm左侧受拉A取FF20360kN14取取取图15M0F52052.52030F62kNARBRBF0FF205100kNF38kNyRAyRBRAxRAxRAx取BCBRBMF2.5202.51.25BC中RB622.525062.5kNm下侧受拉M0ACDRAxM60kNm右侧受拉CAF38kN,F62kN取F20kN;F20kN；FF0下QDQCAF38kN;F38kN17图1M2034066180kNmA21F40620100kNRAx2取MM20360kNmMM20360kNm上侧受拉M20360kNm左侧受拉11M2034066180kNm左侧受拉23K图11Mql2010250kNm0C228811FFFql2010100kN0AyAyBy2Mf20CAxBxH4.33KKMFxFy20x0.5xKAyKHKKKFFcosFsin0KHKFqxcos30Fsin3000AyKH100202.52FFsinFcos0KHK00AyKH100202.50.5502yaxbx2有2abDy0.0450.853m2Dy0.08x0.80.0850.80.4D25;0.4DDDEy0.04150.8153m2Ey0.08x0.80.080.80.4D250.4;DDD120FF100510015100kN0AyAyFF200100100kN0ByByM100101005500kNm0CMf50040CFFF125kNAxBxHDDMF5F310051253125kNmDHDFFcosFsinLQD0LQDDHDFcossinFAyDHD5210012546.42kN2929FFcosFsinRQD0RQDDHDF100cossinFAyDHD5210010012546.42kN2929DFFsinFcosL0LFDHDFsinAyDHD25100125135.2kN受压)21FFsinFcosRDHDAyDHD25EEMF5F352.5EHEFFcosFsin0QEQEEHEF105cosFsinByEHE5202929EFFsinFcos0DHDByDHD25y0MFFFARBpRAppp1F00CP42CppH44162yD4164mdy4f44dxll2x1640.5162212sin;cosD5D544162yE41612mdy4f44dxll2x16120.51622125sin;cosE5EMMFy0DDHD3FF4m31.5mFpp42pFFcosFsinLQD0QDDHD3FFF2510.4472Fppp42p55FFsinFcosLND0QDDHD3FF7Fp451245250.7826FpppFFcosFsinRQD0QDDHDFFF2145250.4472Fppp5pFFsinFcosLND0QDDHDFF3Fp451245250.3354FpppMMFy0EEHEFF4m30.5mFpp24pFFcosFsin0QEQE2EFpHEF10p4525FFsinFcos0NEQEE2HEFF5Fp45145250.5590FpppB23图M0PMFxx0x4mPP1M160kNmqx160kNm5x0x6m22P2111EI21010Pa24000cm499284111EIP1P1PDCCA111346160kNm5x3xxdx2000140480x5x80x1.25x632409602880108028801620mcm25图B11EIEIBP1122AB22113lqlqll223322CCC11VMMdsAyAyEIEIP1122AB11lqll2llql22EI322144441M0FlFl0FFApCxCx2p12pxpyBBB1MMdsMMdsBPP1122BDFl112p2262232ppCC1PP22BDFl311p262ppBX01B12EI1111AB5Fl3111lFl5MMdspPEIEI2226P1ABl35Xp11p11P30M05FlPP2pl5MF02PCp将X1X01311216m6m6m332434111B1M20/m6m6m22.56m2AAC128图M0F33MFl445mP11Mql10630kNm22121211Mql10630kNm1222iM0ABMiZMZ451.5EIZ45BABA1411MiZMZ30EIZ30BCBC111MiZMZ300.5EIZ30FCBBC1CB11BMMM00BBABC1.5EIZ45EIZ300EIZ6kNm111M0ABBA1M36mBC11111FMMF366021kNFQABQAB6ABBA4211FMMF366039kNFQBAQBAABBA42111FQBCQBc6BcCB6211FQBAQBAABBA621M3623042kNm下沿受拉中21M362710613.5kNm下沿受拉2BC中834图解：11M20660m2211M20660mF22i2MiZ604Z60EIZ60ABAB161311BAAB161311ACAC16121CA22ZEIZ;MiZEIZADAD1191DAAD191AMMMM00AABACAD1229111121MEIZ6031.2kN;MEIZ6074.4kNmAB31BA311AC21CA22AD91DA911FMM21.63.6kNQCACAAC6FMM21.63.6kNQACCAAC6111FMMF31.274.420652.8kNFQAB6ABBA62111FMMF31.274.420667.2kNFQBB6ABBA62FFMM0ADDAM2中2852.8x62.64m120122maxQAB126.252.625202.6438.496kNm211Mql30440kNmF2211Mql30440kNmF22Z,Z211MiZ2ZEIZCC14121MiZ4ZEIZ4CAC111MiZiZ4CD12121MiZiZ2DC121211MiZ2ZEIZ42BDBD222MiZ4ZEIZ4DBBD222MiZ404DEDE222MiZ402EDDE222MMM00CCACDEIZ2EIZEIZ03EIZEIZ011212M0MMM0DDCDBDEEIZ2EIZEIZ2EIZ400EIZ5EIZ400122212m30171250m1272110MEIZkNm27C120MEIZkNm7CA1406020M2EIZEIZkNm777CD1220120100MEIZ2EIZkNm777DC12130MEIZkNm27BD260MEIZkNm7DB212071607M2EIZ4040kNmDE23407MEIZ40kNmED21