Impact forces on bridge piers in the event of ship collisions

The aim of this thesis is to propose a simple technique to estimate the maximum impact forces acting on bridge piers in the event of ship collisions. This technique is determined for Dutch commercial inland waterway ships (CEMT classes) and set up to be applied by bridge engineers to determine the required bridge pier strength. Many collision...

Experimental research on hydrodynamic failure of river bridges on spread footings

Collapse of partially or fully submerged river bridges as a result of river floods is investigated. To this end, post-failure analysis of a bridge in Japan’s Iwate Prefecture that collapsed in 2013 is conducted. Failure of this particular bridge is atypical because piers have also toppled over, which can be attributed to the spread footing...

Bodembescherming rond brugpijlers

Onderzoek naar de ontgrondingen rond brugpijlers met een focus op de ontrgronding rond de pijlers van de Waalbruggen in Nijmegen. Door het graven van een nevengeul ontstaat een andere hydraulische situatie waardoor de bescherming rond de pijler aangepast moet worden.

Hydraulic Structures: Caissons

Lecture notes CT3330. Introduction, history of caissons, construction of standard caisson, design of standard caisson, construction of pneumatic caissons.

Scour manual

Feasibility study of protection systems for bridge Piers at Deepwater

Protection systems against ship collision are studied in the first report for this thesis. Based on this initial study a number of 10 protection systems for bridge piers at deepwater (>100 m) are developed. As an example a proposed bridge pier for a bridge over the Strait of Gibraltar with a foundation depth of 300 m is chosen. The major...

Analytical approach to some practical aspects of local scour around bridge piers

Local scour is one of the most important causes on bridge failures during floods, and recent changes of river environments makes it difficult to predict the scour depth and design an appropriate protection works. In this study, firstly an analytical model to describe scouring process around a pier has been derived based on reasonable...

Strömungvorgang und Kolkproblem am runden Brückenpfeiler

Objective of this study was to examine the interaction of flow regimen and scouring at round piers and to obtain simple relationships in order to give the planning engineer a clear and practice oriented method of calculation. The experiments were preceded by an intensive study of the literature and the theoretical treatment of the problem. The...

Sheet piling cofferdams and caissons

Design of steel cofferdams and caissons (diving wells); sinking pneumatic caissons; concrete caissons