This Proforma calculates the load carrying capacity of an arch (up to 40 tonnes gross vehicle weight) based on the modified MEXE (Military Engineering and Experimental Establishmen ) method as described in the Design Manual for Roads and Bridges Standards BD 21/01 & BA 16/97(Amendment No.2).
There is no guidance in the Standards to determine when axle lift-off will occur. The TRL have recorded the load distribution on double axles crossing a number of humped-back bridges. These results have been used to estimate the effects of lift-off and a spreadsheet has been developed to determine the appropriate axle factor based on the road alignment over the bridge.
* MEXE Analysis download link provides freeware version of the software.
The effective span and maximum bearing pressure for a plate girder with no specific bearing is calculated in accordance with BD 56/10 clause 16 and Figure 16. 1A
BEAMANAL is a MS-Excel spreadsheet workbook for the analysis of single-span beams (simple, propped, fixed, or cantilever) and continuous beams of up to 5 spans.
Influence Line diagrams for bending moments at critical sections in a single or multi-span continuous beam.
Abnormal Load Vehicles, HB Vehicles, BD21 Annex D Vehicles and BD86 STGO Vehicles are analysed as moving loads across a single or multi-span continuous line beam to determine critical bending moments and shear forces.
Calculates bending moments and shear forces for loads on a single span or continuous multi-span beam using the moment distribution method.
A Plane Frame Analysis for bending moments, axial and shears forces in a plane frame structure under point loads, UDL's, linearly varying distributed loads (soil pressures) and moments.
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