FEA Model Comparison & Staged Analysis for Curved Girder Bridges

 MODELING TYPES AND TOOLS COMPARED

 PROJECT ISSUES ADDRESSED

DECK POUR SEQUENCES LOCAL BUCKLING ACCURATE STAGE SET UP

 PRESENTATION OVERVIEW

Get a chance to ask questions to the speaker engineer directly

• - Overview of Project
• - Assumptions Made
• - Comparison of Modeling Types and Results
• - Construction Sequencing
• - Staged Load Inputs and Differences
• - Comparison of Various Staged Models
• - Conclusions and Recommendations
• - Live Q&A

Performing analysis on complex bridges, such as curved or flared structures, is a difficult task given the approximations and assumptions inherent in any modeling approach. Whether to use grillage analyses which run relatively quickly but are limited in their ability to model three dimensional effects or a full plate model to fully capture these effects but at added run times and model complexity is a challenge. Advances in computing including the Midas Civil Composite Girder Wizard have madethese types of models more accessible than ever, and engineers must have a full understanding of the assumptions being made to analyze appropriately and design structures. 

During this upcoming webinar he will provide the results of a model comparison study performed for a highly curved bridge (200-ft radius) that included a Midas Civil grillage model and all-plate model,LEAP Steel grillage model, and MDASH girder line analysis with V-load approximations. Results of the comparison will be presented with recommendations on modeling types and approaches.

Also, recent construction issues have led to an increased demand for constructability checks and construction staging. He will discuss the modeling of the stagred construction pour sequences and methods of loading and evaluating the results versus standard criteria during construction. HE will also show a separate example of a construction staging analysis that includes substructure and temporary supports. 

SPEAKER INFORMATION

Experienced Structural (Bridge) Engineer with a demonstrated history of working in the civil engineering industry. Skilled in analysis and design of bridges, including complex geometry, historic rehabilitation, and non-standard materials. Strong professional experience; currently leading a team of 22 staff engineers and designers in the transportation field (bridges, roads, traffic, construction admin), with a Master of Science (M.S.) focused in Structural Engineering from The Ohio State University.

Speaker :  Tom Less Category : Bridge Software : midas Civil Date : 2018-03-27