I have a problem with my cable-stayed bridge. It has 6 pairs of main cables and 6 stay cables. Each of the cables must be tensioned to a specified force, like cable 1 - 310 kN, cable 2 - 358 kN, etc. I have blocked the displacements (UZ), and my current code in TEDDI looks like this:
+prog csm urs:20.15
head tensioning cables
eqlc 1 type G
eqlc (500 511 1) type free
eqlc (521 526 1) type free
equu (1603 1618 3) uz 0
equu (1604 1619 3) uz 0
equu (1602 1617 3) ux 0
end
+apply $(name)_csm.da
My question is, how can I set conditions so that the result will give me the specified force values in each cable? (target force?) Thank you so much for your help.
Not sure if this is helpful, but I have a model with several stressing stages where the cables are modelled as trusses so I have used the axial force as a target. See code below:
+prog CSM
head cable tuning
EQLC 5004 ; EQBE 1430001 N 334.8 ETYP TRUS CS 4 TOL 10 //10% GUTS stress
EQLC 5006 ; EQBE 1440001 N 334.8 ETYP TRUS CS 6 TOL 10 //10% GUTS stress
EQLC 5008 ; EQBE 1450001 N 334.8 ETYP TRUS CS 8 TOL 10 //10% GUTS stress
EQLC 5010 ; EQBE 1460001 N 334.8 ETYP TRUS CS 10 TOL 10 //10% GUTS stress
EQLC 5016 ; EQBE 1430001 N 1000.8 ETYP TRUS CS 16 TOL 10 //80% stressing
EQLC 5017 ; EQBE 1440001 N 891.2 ETYP TRUS CS 17 TOL 10 //80% stressing
EQLC 5018 ; EQBE 1450001 N 760.8 ETYP TRUS CS 18 TOL 10 //80% stressing
EQLC 5019 ; EQBE 1460001 N 401.6 ETYP TRUS CS 19 TOL 10 //80% stressing
EQLC 5024 ; EQBE 1430001 N 1251 ETYP TRUS CS 48 TOL 10 //Final tuning
EQLC 5025 ; EQBE 1440001 N 1114 ETYP TRUS CS 48 TOL 10 //Final tuning
EQLC 5026 ; EQBE 1450001 N 951 ETYP TRUS CS 48 TOL 10 //Final tunning
EQLC 5027 ; EQBE 1460001 N 502 ETYP TRUS CS 48 TOL 10 //Final tuning
EQIT ITER 15 FMAX 10
END
+apply “$(NAME)_csmequ.dat”