Bridge design

Hello,

I’m currently working on a simple bridge model in SOFiSTiK to get familiar with the software. The bridge is 10 meters wide and 14 meters long, without prestressing. My goal is to correctly design the slab reinforcement based on the applied loads.

However, I’ve encountered some issues and would greatly appreciate any guidance.

When I run the CSM Bridge Design – Superpositioning, I receive a large number of errors in the MAXIMA module. It seems that the system fails to generate results for the QUAD elements and spring supports.

Here are two examples from the log:


i’ve tried several approaches, but I’m not sure how to resolve this issue or what it actually stems from.

Issue with multilayer reinforcement design
I’m trying to perform multilayer reinforcement design based on the results from superpositioning. However, when I attempt to reference a combined load case (LC 1128), I receive an error saying that the load case is not available.

Here is the relevant part of my Teddy input:

here is the teddy code
+PROG AQUA urs:3 $ Materials
HEAD Materials
PAGE UNII 0
ECHO FULL no
ECHO MAT FULL

END

+prog sofiload urs:50.1
lc 20 titl “design forces ULS” type NONE

!copy 1 1.5
!copy 2 1.3
copy 1128

end

+PROG ASE urs:9 $ Linear Analyse
HEAD Calculation of forces and moments
PAGE UNII 0
CTRL OPT WARP VAL 0
CTRL OPT SPRI VAL 12
LC (1 2 1)
LC (51 52 1)
LC (81 84 1)
LC (91 98 1)
lc 20
END

-PROG BEMESS urs:50.2
HEAD Global reinforcement settings
ECHO FULL

GEOM H - HA 60[mm] DHA 24[mm] HB 60[mm] DHB 24[mm]

para nog 25

!Baummannmetoden, bytt ut LAY 1 til Lay 0. Gir samme resultat men har mer kontroll over armerinsmengden i lagene
END

+PROG BEMESS urs:4
HEAD Multi-Layer-Definition
LAY POS Z DIRE D AS ASMA WK
‘UPP’ 60 0 20 0 16 0.15
‘UPP’ 75 90 0 0 16 0.15
‘UPP’ 85 0 20 0 -
‘UPP’ 95 90 20 0 - $ the most inner layer may not have an ASMA

     'LOW'  95   90  20  0     -
     'LOW'  85    0  20  0     -
     'LOW'  75   90  20  0    16  0.15
     'LOW'  60    0  20  0    16   0.15

PARA - $ - = all groups

END
+PROG BEMESS urs:50.4
HEAD Plate design using global PARA settings
ECHO FULL EXTR

CTRL TYPE ULTI LAY 1 LCR 20

LC 20

GRP NO 25

END

+PROG BEMESS urs:10
HEAD Crack width Design
ctrl crac lcri 1 lcr 2
lc 20
crac wk para
END

I suspect either the load case is not being generated properly or not accessible at the point I’m referencing it. Any help on how to correctly pass superposed results into reinforcement design would be really helpful.

Thanks in advance for any suggestions!
I’m new to SOFiSTiK and trying to build a solid foundation. Any input is appreciated.
BruDesign1.dwg (290.4 KB)
BruDesign1.sofistik (718.9 KB)

Regarding the first image: Check the report browser output of the MAXiMA superposition to see which actions and load cases are involved in combination/superposition 11. These load cases obviously do not have all the results that could be superimposed.

Regarding third image: load case 1128 is normally created by MAXiMA and includes only results like internal forces, displacemeents, spring forces,…, but no loads. Therefore this message is correct.