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  1. diacivil

    Strand7 and eccentric prestressed slab

    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.
  2. diacivil

    Strand7 and eccentric prestressed slab

    So you agree the proposal is not going to work?
  3. diacivil

    Strand7 and eccentric prestressed slab

    So sorry. it is here nowhttp://files.engineering.com/getfile.aspx?folder=a61e4fec-a554-44e9-8c66-7fd48953da5d&file=NEEEEEEEEEEEEEEEEEEEEEEEEEEEW.st7
  4. diacivil

    Strand7 and eccentric prestressed slab

    Sorry mate, I gave you the wrong file. the last one is attached. please have a look.
  5. diacivil

    Strand7 and eccentric prestressed slab

    Could you tell me why you suggested to do so?
  6. diacivil

    Strand7 and eccentric prestressed slab

    Hi, Would you check it please? Cheers
  7. diacivil

    Strand7 and eccentric prestressed slab

    Thanks mate. I have done similar model and it works.
  8. diacivil

    Strand7 and eccentric prestressed slab

    Still I can not upload stress strain table
  9. diacivil

    Strand7 and eccentric prestressed slab

    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
  10. diacivil

    Strand7 and eccentric prestressed slab

    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.
  11. diacivil

    Strand7 and eccentric prestressed slab

    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...
  12. diacivil

    Strand7 and eccentric prestressed slab

    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.
  13. diacivil

    Strand7 and eccentric prestressed slab

    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
  14. diacivil

    Strand7 and eccentric prestressed slab

    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...
  15. diacivil

    Strand7 and eccentric prestressed slab

    I totally agreed what you have posted Kootk for column only. However, I am still not sure how to make the concrete to behave non-linearly in Strand7.
  16. diacivil

    Strand7 and eccentric prestressed slab

    Thanks a lot guys. I just want to make sure that the concree behaves nonlinearly in Strand7, could you tell me how to do that?
  17. diacivil

    Strand7 and eccentric prestressed slab

    I appreciate it if anyone has more info about concentric slabs.
  18. diacivil

    Strand7 and eccentric prestressed slab

    The analysis was nonlinear (nonlinea aterials and nonlinear geometry). However, no effect of the concentric prestress at all.
  19. diacivil

    Strand7 and eccentric prestressed slab

    the concentric prestress reduces the deflection
  20. diacivil

    Strand7 and eccentric prestressed slab

    The results in strand7 are same if there is not prestress at all (in case of eccentric prestress). only if I applied eccentricity, I got what I expected. In opensees, the results was realistic and exactly what I expected.

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