Design 15 Post tension Bridges project done between 2016 to 2018

Bridge Lead, Project Management, and Construction Services

2 Bridges were curved CIP post-tensioned concrete box girders continuous in two 54m spans supported on single monolithic telescopic pier. The superstructure of the other 6 bridges are precast posttensioned girders spliced together to provide continuity with integral piers. The multi-column piers have different aesthetical features aesthetically. The abutments were spill-through, or closed conventionally or embedded with MSE walls. Another bridges is spanning over seasonal high speed streams, they are continuous 3 spans Box Beams Bridge. The bridges are aligned in different geometry, skews and curvatures. The main challenges in these bridges are: integral and semi integral bridges as new experience in KSA, comparable designs towards cost savings, sea water at or close to the foundations with high concentrations of chlorides and sulphates

Analytical Problems Were Solved

How Scalled Nisqually Earthquake 2001 affect Johnson St. Bridge

What is the real capacity and safety margins embedded in reinforced concrete T girder (model for the symmetrical half of the girder)?

Suspended cable geometry and bridge analysis

Nonlinear Analysis for Vehicular Collision  Impact on Pedestrian Bridge Piers 

  

Match the cracks between the existing inspected girder and the FE model

The crack patterns, formation and propagations.

The stiffness degradation in terms of Load-Displacement Curve.

Different models and nonlinear analysis for concrete curved slab bridge

3D Grillage for two typical spans of simply supported bridge

Seismic Analysis for approx. 2 KM light rail transit bridge. (segmental box girder post-tensioned externally)







3D FE Modeling for box girder bridge and two mode shapes.

Ductile replaceable joint connection between pre-tensioned cap and steel pipe

Residential building including freestanding staircase, curved beam folded plates and shell.

Nonlinear analysis of cable stayed bridge during incremental launching.

Modelling the concrete abutment of railway bridge, representing the potential cracks.

Smeared crack modeling of skewed pier.

Analysis and evaluation of existing massive concrete pier.

Evaluation of a concrete girder was colided by vehicle at mid-span, representing the failure mode and the changes in the concrete strains as well as reinforcement strains.

Response spectrum analysis for existing bridge.






Response spectrum analysis for retrofit solution.









Stress distribution during the increase of loads in a reinforced concrete section (Nonlinear Analysis).








3D model for rigid frame underpass.












Utilizing the unknown load factor to find the optimal cable force layouts.

Integral abutment behavior from vehicular loads and temperature variations