Transcription of 断面の M-N - engineering-eye.com
1 Web ( ) 1RC One Point Advice 3 M-N M-N M-N failure envelope [1] M-N (M-N interaction curve) M-N M-N M-N 1. M-N 1 (N= M= ) 0=e 0>e e(=eccentoricity) NMe/= NeM = 1 / 2 M-N ,uN uM 2(a) )/(NMe= 0=e P N=P M=0 PeN=P M=P ( e) web ( ) 2 0=e cee= bee= =e 2 (a) M-N (b)
2 Bee= ubuNN bee ubuNN > bee< 2(b) over-reinforcement under-reinforcement 2 (b) e 1s c ubuNN = bee= sysEf/1= cuc = web ( ) 3 ubuNN bee sysEf/1> cuc = ubuNN > bee< sysEf/1< cuc = cuc = syyEf/= 3103/)155( = ccuf [2] 2.
3 M-N / / ddMN, uuMN, d=design/ , u=ultimate/ 3 uuNM - 3 M-N M-N [2] udiNN udiMM (1) (1) [3] 3(a) M-N web ( ) 4 3 (a) M-N 3 (b) (stress ratio) [2] (1) i 2 M, N (1) 3(b) (stress ratio) [4] (stress ratio)+ 001+++++ =MMMMy 001 =MMMMy (2) 0M 1M + yM web ( )
4 5 + + 3. M-N 4 3 3 (a) / / M-N (b) M-N (c) M-N web ( ) 6 4 M-N web ( ) 74. 2 p2 p1 p1+p2= 3 5 cuufbdNN = cuufbdMM =2 b, d1= , fc = p1 C B A M-N A B C uN uN 3 5 M-N 2 6 / (a) []kNNu []mkNMu (b) []2N/mmbdNu []22N/mmbdMu 6(a) mm M-N 6(b) 3 web ( ) 8 6 M-N 5.
5 M N . M-N / 7 7 uN uM uM web ( ) 9 7 M-N ),(uuMN =(100kN, 20kN m) kNN100= mkNM =19 a a N a N M N b N c a cu y N a b N (a c web ( ) 10 [1] MacGregor, J.)
6 G.: REINFORCED CONCRETE - Mechanics and Design-, Prentice Hall [2] 2007 [ ] [3] 2 - - 3 One Point 5 16 2 [4] Bozorgnia, Y. and Bertero, (edited by): Earthquake Engineering from Engineering Seismology to Performance-Based Engineering, CRC Press.
