Dear IDS,
I do not know how to thank you for your special efforts and time. I really appreciate your knowledge, effort and time.
I will see the models and get back to you.
Thanks a lot.
Kindly see the attached file. Now, the tendon is on zero eccentricity without any software errors.http://files.engineering.com/getfile.aspx?folder=b9ffa9a4-1611-4877-b1dc-1e7d2513c7c8&file=give_up.st7
Dear BAretired
I completely agree with you. but I do not know how to model it correctly.
Dear Brad805
the rebar dia is 10 mm.
and I donot know if there is limitation for student version.
distributed load case is only 10 kn/m
combination load case is from distributed load and prestress
note: I applied 1 mm eccentricity to avoid software error (as explained in strand7 manual)
http://s7.postimg.org/xk3e1v9sb/mom.jpg bending moment of combination load case...
HI,
thanks all for your responses.
the member has same moment capacity with and without prestress as it can be calculated from wl^2/8.
I modeled the problem as simply supported beam to understand the effect of prestress and then will change to soil support and use winkler model.
The prestress tendon is modelled as truss element with rigid links to the concrete. The axial egfect of the prestress is appeared as expected. However, no effect of the prestress on the moment capacity at all.
Cheears
Hi IDS,
I model 8 metres length of simply supported beam with distributed load and prestressed tendons with zero eccentricity. I model the beam as beam element and as plate element.the tendon was stressed to about 85% of the total strength. Concret strength is 32 mpa. Beam dimensions in both...
