Experimental modal validation of a semi-analytical method for assessing dynamic behaviour of flood gates

A new semi-analytical model is developed to predict the dynamic response of slender gates in combination with an overhang, which are subjected to standing waves. Still little is known for these types of gates for this specific forcing type. The semi-analytical model is still in its development phase and must be validated on its performance. This...

Optimization of steel plate girders in bending: Using FEM-analyses on S690 and S890 steel plate girders

A parametric study, using the FEM-software package ABAQUS, validated on experimental results found by Abspoel, was conducted on S690 steel plate girders to address if the results of the previous researches was valid. Using a slightly different analytical model the results show the maximum web slenderness of this steel grade in both 6000 mm2 and...

Technical feasibility of a quick bridge replacement strategy with minimal traffic hindrance: On the retainment of existing foundations and the application of Advanced Cementitious Materials in an Accelerated Bridge Construction method

Bridges are a crucial part of the dense Dutch highway network. Almost 50% of the current bridges are built between 1960 and 1980 for an intended service life of 50 years and thus they might reach the end of their lifetime in the near future. This strongly indicates that a large challenge can be expected regarding infrastructural replacement.<br/...

Semi-analytical method of buckling strength prediction for plates stiffened with T-shaped stiffeners having slender (class 4) webs

A master thesis about stiffening plates with very slender stiffeners is presented. The master thesis represents a completion of my master studies and is written in order to qualify for the degree of M.Sc., Master of Science in Structural Engineering at Delft University of Technology. Current work is done in close collaboration with Iv-Consult,...

Trillingen van betonnen voetgangersbruggen / Vibrations of concrete footbridges

Nowadays more and more slender concrete footbridges are designed. Footbridges are designed thinner to increase esthetic value, as well as incorporate sustainability and to reduce building costs, with a consequence that the eigenfrequency of the bridge can drop so low that it may fall into a range of frequencies that is susceptible to vibrations...

Mega Floating Concrete Bridges

Introduction This graduation project has been initiated to research the technical feasibility of floating bridges. The project has been done in co-operation with the FDN engineering company and Delft technical university. A design is made of a continuous pontoon floating bridge, which connects a mainland to an island. Floating bridges can be...