This spreadsheet computes influence lines of bending moment and shear force for the sections of continuous beams.

A value of the influence line at position 'X' presents a force in the structural member due to a concentrated downward unit load applied at this position.

The forces in statically undetermined structure are found using method of forces described on the page 'Solver'. The worksheet formulas are used to solve the structure for a single load. VBA is used to automate this task for various locations of moving load.

Starting guide

A.  Enable  VBA
In Office 2007/2010  the Security Warning will appear in the upper left corner of the screen. Click on Options, and then select Enable This Content option.
B.  Load Solver Add-in.
The spreadsheet is using the Solver to find truck locations producing maximum and minimum forces in the beam. The Solver Add-in is a Microsoft Office Excel add-in which is already installed on your computer as a part of Microsoft Office. To use it, however, you need to load it first.

* Influence Lines download link provides freeware version of the software.

Influence Line Diagrams for Single or Multispan Decks

Influence Line diagrams for bending moments at critical sections in a single or multi-span continuous beam.

Continuous Beam Analysis for Excel

The easiest and most straight forward continuous beam analysis program available.

Investigation Of Reinforced Concrete Column Section

ShortCol computes ultimate strength of reinforced concrete column subjected to combined axial force and bending moment.

Shear Capacity and Confinement Reinforcement of Columns

Calculates shear capacity and confinement reinforcement of circular and oblong shape reinforced concrete columns.

Static and Moving Load Analysis of Bridges

Builds two-dimensional bridge models and performs static and moving load analyzes. Uses GT STRUDL as a structural analysis engine.

Submit a review about Influence Lines software with your social media profile