静定结构内力计算练习题.doc

q N(b)ql(a)1、作弯矩图。q Nql 2ql 2D20 kND10 kN10 kN10 kN4 m4 m4 m4 m4 m4 m4 m10 kN/m(m)10 kN/m1 m(l)M N1 m4 m(k)4 m4 m4 m(j)4 m4 m4 m(i)(g)CBAql 2q NqlDEDBACq Nql 2ql(h)BCDAEq Nql 2ql(f)ECBBAAq Nql 2(e)q NACBql 2(d)DCBAECBqlql 2q N(c)BAqCllllllFPllqBABACMqCBABCAqqM(g)(h)(f)(c)(d)(e)(b)(a)2、求支座反力，并作弯矩图。FPqBEADCBDCBADCBADCAlqllllqllqCDABqlql 2DqCBA50 kN/m4 m3 m3 mCBDA50 kN100 kN/m3 m3 m4 mql 2DBACql(g)(h)(e)(f)(d)(c)(b)(a)3、作弯矩图。(a)4、作弯矩图。FP(c)(b)qGFEDCBACGFEDBADBEDCBAEDCBADCBAllllllqqMMlllllllllFPFPFPllCAMBACql 2M NM N(j)(h)(i)(g)(f)(d)(e)BAABABBBllllFPFPFPqlllClFPqCBACBACBAMCAMCACqC(g)(h)(e)(f)(d)(c)(b)(a)5、作弯矩图。(a)6、作弯矩图。(b)FAqlllql 22l(g)ql 2l2lAlllllFPFPFPFPBDHIFGECADlCAq NBql(h)qlql 2q NCBq Nql(e)MFEDCBACGECBBAq N(f)(d)q N(c)10 kN/m10 kN/mqlGllllll10 kN10 kN2 m2 m2 m2 m2 m2 m2 m2 m(i)10 kN10 kN4 kN/m2 m2 m2 m2 m4 m(h)q N(g)FEDCBABql 2(f)q NDCBq N(d)ABDGF(c)ECq NBAq Nql(b)ql 2q Nq N(a)7、作弯矩图。EFBql 2DCAB(e)(h)作内力图。llFP212 mFP21llFP1FPqlllllFPl2 m2 m2 m2 m(g)作内力图。21(d)2150 kN(c)12350 kN2 m2 m2 m2 m2 m2 m(b)32110 kN4 m4 m4 m4 m5 kN4 m4 m(a)(e)8、求指定杆件内力。(f)4 m4 m4 m4 m(a)(c)(e)(g)2 mll2150 kN30 kNFPFPlll21(f)lllFP21(h)ll2150 kNl30 kN30 kN50 kN321(d)3212 m2 m2 m2 m2 m2 m2 m50 kN2 m1250 kN2 m2 m(b)110 kN4 m4 m4 m4 m9、求指定杆件内力。ql(b)(a)10、作弯矩图。AAEBACFD20kN2 m2 m2 m4 m(d)EDHlq N4 m4 mAqqqllllGFCql 2EBDl10 kN20 kN10 kN10 kN10 kN/m2 m