안녕하십니까.. 영남대학교 지반공학 연구실에 김성년 이라고 합니다..
요즘 flac-2D 로 터널에 대한 내진해석을 연구중인데요..
솔직히 잘 모르겠네요
지중 또는 지하 구조물에 대한 내진 설계에 관한 서적도 나름대로 봤습니다만..
내공이 부족한지 ... 정성이 부족한지.. 참 막막하네요 ㅠㅠ
flac에 있어 내진설계에 관해 전체적인 흐름을 알고 싶습니다.. 메뉴얼을 봤습니다만..
무슨 의미인지..잘 모르겠습니다..
다시한번 정중하게 부탁드리옵건데.. 많은 가르침 부탁드립니다..
제가 어렵게 구한 dat문 보시고 어떤 의미인지 설명좀 부탁드립니다.
아래 부분은 정적인 부분이 끝난후에 실시한 동적 해석인데요
솔직히 잘 모르겠습니다..
귀찮으시더라도 ..상세하게 설명좀 부탁드리겠습니다..
제 멜주소는 code53@hanmail.net ..입니다.
********** 지반의 고유주기와 진동수를 찾기 위하여 해석하는 단계 ***************
new
re s03.sav
ini xdis 0 ydis 0 xvel 0 yvel 0
set dyn on
his dytime ; 2
his ydis i 51 j 69 ;천단부 3
his xdis i 48 j 65 ;좌측 측벽부 4
his xdis i 54 j 63 ;우측 측벽부 5
;step 100
solve dytime 3.0
set his dis.his
his write 4 5 vs 2
sav d01.sav
*After free vibration analysis, natural period is estimated as
* T = 0.83 sec (1.20 HZ)
ret
********** 지표면에서의 가속도를 확인한 후 감쇄율을 적용한다. ****************
new
re s03.sav
his reset
set dyn on
app ff
set rayleigh 0.02 1.20 stiff
hist read 1 soft.dat
hist write 1 table 55
app xacc=1.0 his table 55 j 1
app yacc=0.0 j 1
set dytime 0.0
set dydt 5.0e-5
his dytime
; surface acceleration
his xacc i 21 j 81
his xacc i 55 j 81
his xacc i 83 j 81
step 200000
save d02.sav
new
re s03.sav
********* 감쇄율을 적용한 후 내진해석 실시 *********************************
title
earthquake resistant analysis
*******************************************************************
his reset
set dyn on
app ff
set rayleigh 0.02 1.20 stiff
hist read 1 soft.dat
hist write 1 table 55
;app xacc=1.0 his table 55 j 1
;app xacc=0.1689 his table 55 j 1
app xacc=0.205 his table 55 j 1
app yacc=0.0 j 1
set dytime 0.0
set dydt 5.0e-5
his nstep 1200
set ncwrite 100
his dytime ; his 2
; crown
his ydis i 51 j 69 ; his 3
his yvel i 51 j 69 ; his 4
his yacc i 51 j 69 ; his 5
; left side
his xdis i 48 j 65 ; his 6
his xvel i 48 j 65 ; his 7
his xacc i 48 j 65 ; his 8
; right side
his xdis i 54 j 63 ; his 9
his xvel i 54 j 63 ; his 10
his xacc i 54 j 63 ; his 11
; surface acceleration
his xacc i 21 j 81 ; his 12
his xacc i 30 j 81 ; his 13
his xacc i 40 j 81 ; his 14
his yacc i 55 j 81 ; his 15
his yacc i 70 j 81 ; his 16
his yacc i 83 j 81 ; his 17
DEF prbeam1
nnn=nnstep
i=0
command
set log stru.log
end_command
loop while i < nn
command
step nnn
set log on
print struct beam
set log off
end_command
i=i+1
end_loop
END
; dynamic analysis
set nnstep 1200 nn 250 ; 15 sec
prbeam1
save d03.sav
ret
요즘 flac-2D 로 터널에 대한 내진해석을 연구중인데요..
솔직히 잘 모르겠네요
지중 또는 지하 구조물에 대한 내진 설계에 관한 서적도 나름대로 봤습니다만..
내공이 부족한지 ... 정성이 부족한지.. 참 막막하네요 ㅠㅠ
flac에 있어 내진설계에 관해 전체적인 흐름을 알고 싶습니다.. 메뉴얼을 봤습니다만..
무슨 의미인지..잘 모르겠습니다..
다시한번 정중하게 부탁드리옵건데.. 많은 가르침 부탁드립니다..
제가 어렵게 구한 dat문 보시고 어떤 의미인지 설명좀 부탁드립니다.
아래 부분은 정적인 부분이 끝난후에 실시한 동적 해석인데요
솔직히 잘 모르겠습니다..
귀찮으시더라도 ..상세하게 설명좀 부탁드리겠습니다..
제 멜주소는 code53@hanmail.net ..입니다.
********** 지반의 고유주기와 진동수를 찾기 위하여 해석하는 단계 ***************
new
re s03.sav
ini xdis 0 ydis 0 xvel 0 yvel 0
set dyn on
his dytime ; 2
his ydis i 51 j 69 ;천단부 3
his xdis i 48 j 65 ;좌측 측벽부 4
his xdis i 54 j 63 ;우측 측벽부 5
;step 100
solve dytime 3.0
set his dis.his
his write 4 5 vs 2
sav d01.sav
*After free vibration analysis, natural period is estimated as
* T = 0.83 sec (1.20 HZ)
ret
********** 지표면에서의 가속도를 확인한 후 감쇄율을 적용한다. ****************
new
re s03.sav
his reset
set dyn on
app ff
set rayleigh 0.02 1.20 stiff
hist read 1 soft.dat
hist write 1 table 55
app xacc=1.0 his table 55 j 1
app yacc=0.0 j 1
set dytime 0.0
set dydt 5.0e-5
his dytime
; surface acceleration
his xacc i 21 j 81
his xacc i 55 j 81
his xacc i 83 j 81
step 200000
save d02.sav
new
re s03.sav
********* 감쇄율을 적용한 후 내진해석 실시 *********************************
title
earthquake resistant analysis
*******************************************************************
his reset
set dyn on
app ff
set rayleigh 0.02 1.20 stiff
hist read 1 soft.dat
hist write 1 table 55
;app xacc=1.0 his table 55 j 1
;app xacc=0.1689 his table 55 j 1
app xacc=0.205 his table 55 j 1
app yacc=0.0 j 1
set dytime 0.0
set dydt 5.0e-5
his nstep 1200
set ncwrite 100
his dytime ; his 2
; crown
his ydis i 51 j 69 ; his 3
his yvel i 51 j 69 ; his 4
his yacc i 51 j 69 ; his 5
; left side
his xdis i 48 j 65 ; his 6
his xvel i 48 j 65 ; his 7
his xacc i 48 j 65 ; his 8
; right side
his xdis i 54 j 63 ; his 9
his xvel i 54 j 63 ; his 10
his xacc i 54 j 63 ; his 11
; surface acceleration
his xacc i 21 j 81 ; his 12
his xacc i 30 j 81 ; his 13
his xacc i 40 j 81 ; his 14
his yacc i 55 j 81 ; his 15
his yacc i 70 j 81 ; his 16
his yacc i 83 j 81 ; his 17
DEF prbeam1
nnn=nnstep
i=0
command
set log stru.log
end_command
loop while i < nn
command
step nnn
set log on
print struct beam
set log off
end_command
i=i+1
end_loop
END
; dynamic analysis
set nnstep 1200 nn 250 ; 15 sec
prbeam1
save d03.sav
ret
