Special Services

ES-Consult has since its establishment completed several tasks related to important civil and structural works and has also carried out many special assignments in the category of applied sience. A very important part of the activities of the firm has been assistance and technical consultances to building- and infrastructure owners.
Here follows descriptions of a series of ES-Consult's special services.



Ship Impact on Structures


On numerous occasions ships have collided with bridges, offshore structures etc. Examples are the Tjörn bridge (Sweden), the West Bridge of the Great Belt Link (Denmark) and the Maracaibo bridge (Venezuela).
ES-Consult has developed a software collection to model a collision between a ship and an off-shore structure.
The software provides a sophisticated numerical analysis of the event of a ship collision with a structure. The results are obtained in terms of member forces, displacements and accelerations.
The results are presented in plots and  tables which make interpretation and understanding easy. The results give answers to questions like: What will the permanent deformation of the foundation be? Will the bearings fail? Can a more economical foundation design be chosen?


The analysis that ES-Consult can provide, ncludes modelling of the bridge structure, the foundation and the ship structure. Reliable answers are obtained by a combination of finite elements techniques with optimization algorithms and numerical integration techniques.
The models may contain any relevant mechanisms entering a problem. Standard features are non-linear modelling of the foundation, the bearings and ship structure. However, the software is flexibly designed so that new features can be incorporated when needed.


The analysis is executed by highly skilled engineers with large experience in dynamics and structural engineering in general.
The interpretation of the results and the reporting is based on many years' experience. ES-Consult has specialized in communicating complex issues in easily understandable reports which can be of direct use to the client.
ES-Consult's experience and knowledge  have been applied in connection with the Øresund Link Project, the major bridge project between Sweden and Denmark.
All photos in this page are reproduced with courtesy of Moffat & Nichol Engineers, Richmond, Virginia, USA.