L/2

1 11 -1 11 SPACE SPACE 44()zwdwEIP xdx= ()wPx x ()== dMQdxdQPxdx 22()= dMPxdx 22()zdwEIM xdx= zEI 44()zdwEIP xdx= (1 1 . 1) L/2 PxL/2EI 11-1 EI L/2L/2 xx z y 2L2L11 -2 11 SPACE SPACE 0=wP ()wx 0/2xL < 440zdwEIdx= 4 313zdwEICdx= 2122zdwEIC x Cdx=+ 21232zCdwEIxC x Cdx=++ ()32123462zCCEI w xxxC x C=+++ 4 2 3 11-2 ()()2332000000222 LxzLxwdwdxxLdwdxLdwPQEIdx ====== == = = ( ) ( ) 430==CC ( ) 2122082zLxLCdwLEICdx==+= ( ) ( ) (1 1.)

2 2 ) (1 1 . 3) (1 1 . 8) (1 1 . 7 ) (1 1 . 4 ) (1 1 . 5) (1 1 . 6 ) ( ) (1 1 . 9 ) ( ) 11-2 Q(L/2) 11 -3 11 SPACE SPACE31322zLxdwPEICdx=== ( ) ( ) 1228= =PCPLC ( ) ()3233212164( )3( )48zzzPPLwxxxEIEIPLxxEILL= + = + ( ) 2=xL 32192zLPLwEI == ( ) ( ) 2122()14()828zdwMxEICx CdxPLPPLxxL= = = + = 313()2zdvPQxEICdx= = = 11-3 ( ) ( ) ( ) ( ) ( ) (1 1 . 1 3) 11-3 8PL 8PL8PL 2PL 2PL+ + 11 -4 11 SPACE SPACE 11-4(a) 44=wdwEIPdx 4 3212343 2123411621112462zwzwdwEIP xC xC x CdxEI wP xC xC xC x C=+++=++++ 4 0(0) 0;0() 0;0xxLdwwdxdwwLdx====== ( ) ( ) ( ) 3040(0)0zxxdwEICdxEI wC===== 2 ( ) ( ) ( ) 331243 21211062111()02462==++==++=zwxLzwdwEIP LC L C LdxEI w LP LC LC L 21221211062110123++=++=wwPLCL CPLCL C 12,CC ( ) ( ) (1 1.

3 1 9 ) (1 1 . 2 1) ( ) ( ) ( ) (1 1 . 2 5) (1 1 . 2 6 ) (1 1 . 2 7 ) 11-4 zEI wP212wPL 212wPL 224wPL2wPL2wPL 4max384wzPLwEI=(a) (b) (c) (d) (e) 11 -5 11 SPACE SPACE122212= =wwPLCPLC 222222()22126( )6( ) 112ww wzwPPPdwMxEIx Lx LdxPLxxLL= = + = + 22(0)12()224= =wwPLMPLLM ()22( ) 12= + = + wwwPLQxPxPLxL 11-4(b) (c) ( ) ( ) 43224432()()241224() 2() ()24= + = + wzwzPxLxLxwxEIPLxxxEILLL 322332()()64122() 3() ()12 == + = + wzwzPdwxLxL xxdx EIPLxxxEILLL ( ) (1 1 . 2 8) ( ) (1 1.

4 3 0 ) ( ) ( ) ( ) 11 -6 11 SPACE SPACE4max()2384==wzPLLwwEI 40, tcm== SPACE 11 ()3315100 800192192 == =PLEIcm 11-3 22545320500/40; 10 102339202yyctEkNcmDcmt cmAcmIcmIZZcmD===== == == D D t 11-6 ( ) 11-5 100kN4m4m 4m4m100kN( ) 11 -7 11 SPACE SPACE 11-8 2 11-9 4m 11-7 100kNm 100kNm100kNm+50kN-50kN 11-8 11-9 11-10 11-11 11 -8 11 SPACE SPACE 11-11 11-12 11-13 11-12 11-14 11-13 11 -9 11

5 SPACE SPACE 11-16 100 11-17 11-15 11-16 11-17 11 -10 11 SPACE SPACE SPACE I/O SOUTPUT Divided step number 100 -------------------------------------- Unstable number: 0 Nx Qy Qz Mx My Mz 1 1 2 1 3 1 4 1 5 1

6 6 1 11-20 *1 11-19 Z 11-19 *1 11-18 Soutput 11 -11 11 SPACE SPACE 11-20 Ctrl+ 11-20 11-21 11 -12 11 SPACE =cm ( ) Shift+ SPACE 11-1 SPACE SS400 220500/kN cm H-350x175x7x11 ( ) 50kN50kN2m2m2m6m100kNm3m6m3m50kN50kN3m3m 3m50kN6m4m2m50kN2m50kN50kN50kN2m2m2m8m 11-1 11-2 11-3 11-4 11-5