* * Structural Performance on Reinforced Concrete and Precast Concrete Columns Using Ultra High Strength Materials by Toshio MATSUMOTO and Hiroshi NISHIHARA Abstract In this experimental study, in order to clarify the structural performance of RC and precast concrete (PCa) columns with ultra-high strength materials, anti-symmetrical cyclic lateral and varying axial loads, corresponding to the axial load acting on the exterior column in a lower story, were applied to the six specimen columns. Test results on the RC and PCa columns, using 80N/mm 2 or 120N/mm 2 design standard compressive strength and high strength reinforcement, were subsequently reported. The current design codes turned out to be applicable for evaluating the bending and deformation capacities of the RC and PCa columns with ultrahigh strength materials. (F c 80 F c 120) (SD490 USD685) (SBPD1275/1420) (PCa) RC 6 F c 120N/mm 2 80N/mm 2 PCa RC RC USD685) (SBPD1275/1420) RC 60N/mm 2 1)15) (F c 80 F c 120) (SD490 * 23
1/3 (b) (D)=330330(mm) M/(QD)=2.0 6 (F c )80 N/mm 2 120N/mm 2 F c RC 16- D22(SD490)16-D19(USD685) (PCa) 16 4 PC -RB6.2(SBPD 1275/1420)@50 p w =0.73% C80D22C80D19 (p g ) PC80D19 ( ) C120D22C120D19 PC120D19 F c 120N/mm 2 C80D22C80D19 PC80D19 PCa PCa ( 10mm) el F c 80N/mm 2 F c 120N/mm 2 el. 10% 6(13mm) 24
L 0.2F c bd Q N 0.55F c bd (F c 120 N/mm 2 0.50F c bd) -0.7a g y (a g y : ) (Q) (N) NQ10 NQ50 F c 120N/mm 2 F c 80N/mm 2 1700kN 2 (R= h) R= 1/4001 1/200 1/100 1/67 1/50 2 1/33 1/20 1 1D 25
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R=+1/100 C80D19 PC80D19 Q-R (Q-R ) P- C80D22 R=+1/100 (R=+1/20) 3 PC80D19 (Q) P- P- C80D22 C80D19R=+1/50 1 P- PC80D19 R=+1/33 95% C80D22 (a) F c 80N/mm 2 R=-1/33 C80D22C80D19 PC80D19 R=+1/20 1 P- 9396% PCa PC80D19 PCa PC80D19 ( ) (b) F c 120N/mm 2 R=+1/200+1/100 C80D22 C120D22C120D19 PC120D19 Q-R F c 80N/mm 2 1 C80D19 R=+1/100 PCa PC120D19 PC80D19R=+1/200+1/100 2 C120D22 R=+1/200 27
R=-1/200 C120D19 PC120D19 R=1/200 R=+1/200+1/100 Q-R PC120D19 R=+1/100 F c 80N/mm 2 R=+1/67 P- C120D22 C120D19R=+1/67 PCa PC120D19 R=+1/100 PC120D19R=+1/67 R=+1/100 PC120D19 C120D19 R=-1/33 R=+1/20 P- 8391% (N u =a g y +0.85(bD-a g ) B ) F c 120N/mm 2 PCa PC120D19 F c 80N/mm 2 ( ) PCa RC F c 80N/mm 2 3 ( ) (h=1320mm) (0.2% ) ( y =0.77%) PCa R=-1/100 PC80D19 C80D22 F c 80N/mm 2 F c 120N/mm 2 C80D19 R=+1/100 R= +1/100 F c 120N/mm 2 PC80D19 28
F c 120N/mm 2 1D 4 F c 80N/mm 2 F c 120N/mm 2 70% PCa R=+1/100 PCa PC80D19 R=+1/100 29
19) ACI 318 NZ 20) ( cu )0.3% ACI 120N/mm 2 P- 16) 100180N/mm 2 17) () F c 80N/mm 2 ACI 18) P- P- ( ACI ) 0.3% C80D22 C80D19 P- ACI PCa PC80D19 PC120D19 F c 120N/mm 2 PC120D19 ACI F c 80N/mm 2 0.3% F c 120N/mm 2 P- ACI PCa PC120D19 P- F c 80N/mm 2 F c 120N/mm 2 ACI 30
F c 120N/mm 2 ACI PCa ACI 10 1)15) 60N/mm 2 23 1)15) 1)15) ACI ( cu =0.3%) 1) 60N/mm 2 B P- =65.7173 N/mm 2 ACI 2) N/(bD B )=0.35 P- 0.6 ACI 3) P- 150N/mm 2 4) RC ACI PCa 45 31
NZ NZ NZ 55 N/mm 2 (1) ( 1 k 3 )0.75 ACI 0.85 P- NZ 150 N/mm 2 1 =0.85-0.004( B -55)0.75: B 55N/mm 2 (1) P- ( 1 ) (2) 1 =0.85-0.002( B -55)0.65: B 55N/mm 2 (2) P- NZ ( 1 ) (2) PCa 1 22) ( ) Q-R P- P- 160N/mm 2 F c 80N/mm 2 21) P- P- 100N/mm 2 22) F c 120N/mm 2 P- 10/1000rad. P- ( )Q-R P- P- 80% 21) P- F c 80N/mm 2 PC80D19P- 95% 32
NZ F c 80N/mm 2 ( 1 ) F c 120N/mm 2 P- 5) P- P- C120D22 P- C120D19 D/3 () 1/2 RC [1] 4 PCa ( 1 1) )C-2 pp. 171-1741996.9 D22(SD490) D19(USD685) 2) ( [2] 3 RC 3 pp. 111-1161996.12 [3] 3 RC ( 1 2) 2) F c 80N/mm 2 ( )C-2 pp. 37-401997.9 F c 120N/mm 2 PCa [4] 2 RC RC ( 3) ( )C-2 pp. 375-3761998.9 [5] 4 RC (F c =120N/mm 2 ) ( 1 2) ( )C-2 pp. 3) F c 80N/mm 2 607-6102000.9 120N/mm 2 0.55 [6] 3 0.5 F c 120N/mm 2 Vol.22No.3pp. 943-9482000.6 [7] 6 4) ( 5 ACI6) ( )C- 2 pp. 423-4262001.9 [8] 6 ACI P- ( 3 4) ( )C-2 pp. 399-4022001.9 33
[9] 4 [21] RC ( 1 2) ( )C-2 pp. 415-418 2001.9 [10] ( 1 34 Vol.16No.1pp. 55-662005.1 [22] 5 RC 18 pp. 109-1142003.12 2) ( )C-2 pp. 151-1542003.9 [11] 6 ( 7 8) ( )C-2 pp. 155-1582003.9 [12] 6 ( 9 10) ( )C-2 pp. 477-4802004.8 [13] 5 (F c = 150N/mm 2 ) RC ( )C-2 pp. 491-4922004.8 [14] 5 ( 1 2) ( )C-2 pp. 473-4762004.8 [15] 6 ( 5 6) ( )C-2 pp. 201-2042005.9 [16] ( 2) 505 pp. 93-99 1998.3 [17] 100180N/mm 2 577 pp. 77-84 2004.3 [18] Vol.16No.3 pp. 59-682005.9 [19]American Concrete Institute: Building Code and Commentary, ACI318 M-02, 2002 [20]Standards New Zealand : The Design of Concrete Structures, NZS 3101-1995, 1995