Page tree
Skip to end of metadata
Go to start of metadata

You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 3 Next »

live-template: Template named 'null' is not accessible.

{{Test Problem

name = Tendons - frame moments and section cuts

description = This test problem clarifies how frame and tendon forces obtained from models with tendons should be interpreted. Both regular models and bridge modeler models are covered.

keyword = tendon; bridge; bridge modeler; section cut

program = SAP2000

version = V12.0.2

status = finalize

id = ok/tendons - frame moments and section cut forces}}


Note: Some of the features described on this pages were implemented in V14 of the program.

This attached model contains the following four separate structures (please see the screenshot below):

  • 1 span bridge structure created using bridge modeler
  • 1 span bridge structure created using manual modeling
  • 2 span bridge structure created using bridge modeler
  • 2 span bridge structure created using manual modeling

All four structures have the following properties:

  • each span length is 10m
  • deck section is a concrete deck section 0.5m deep and 3m wide
  • the structures are simply supported at each abutment and bent
  • Straight 25mm dia tendon is defined to run along the entire length of the structures. The tendon is located 0.05m from the bottom of the section and a prestressing force of 10kN with no losses was applied to the tendon.

Goals of this model:

  • Determine and review moments and other internal forces resulting from prestressing.
  • Verify prestressing forces used for flexural design check.
  • Compare prestressing forces obtained from "Display > Show Bridge Forces/Stresses" form with forces obtained from frame elements.
  • Define section cut cutting through tendon and frame, get forces and compare them with forces obtained from frame and tendon elements at the same location.

Model Screehshots


  • [SAP2000 V12.0.2 model|Tendons - frame moments and section cuts^SAP2000 V12.0.2] (Zipped SDB file)
  • No labels