Monitoring structural responses during load testing of reinforced concrete bridges: a review

Nowadays, with the aging of the bridges and the advancements in technology, load testing has emerged as an effective method to assess existing concrete bridges with missing information, or where analytical methods do not provide an accurate assessment. Two types of load tests are identified: diagnostic load tests and proof load tests. Both...

Ultra-high performance fiber-reinforced concrete in incremental bridge launching

Incremental bridge launching is one of the many ways in which a bridge can be constructed. In The Netherlands this method is not often used. This may be explained by the fact, that there are not many suitable locations for application of this method. Incremental bridge launching is profitable for long bridges and can only be used for straight...

Structural monitoring and modal properties of a real time bridge and lab tests

For understanding the actual state of durability of concrete structures, it is important to know its response due to external loading. This response mainly depends on the actual structural and material properties of the structure, while loaded. Mechanical and chemical degradation are the main mechanisms that may affect these properties with time...

Modal analysis of a concrete highway bridge: Structural calculations and vibration-based results

In the field of civil infrastructure, Structural Health Monitoring systems are implemented more and more frequently with the aim to safeguard the safety and service-life of structures such as bridges and tunnels. Changes in the integrity of the material and/or structural properties of this class of structures is known to adversely affect their...

Data-intensive structural health monitoring in the infrawatch project

The InfraWatch project is a Dutch research project, aimed at developing novel techniques for large-scale monitoring of concrete infra-structures. The project involves a large bridge, fitted with multiple types of sensors that capture the high-resolution dynamic behavior of the bridge. With 145 sensors measuring at 100 Hz, a huge amount of data...

Arches, Nonlinear? Investigating the geometrically nonlinear behaviour of arches in 2D.

The research showed that there is only a poor relation between second order bending moment magnification via Euler buckling and the actual geometrically nonlinear behaviour of arches. The better approach for the second order effect is to think of additional bending moments caused by imperfections and by the imaginary second order loading. The...

Stabiliteit van een dragende-leuning brug uitgevoerd in beton. Stability of a concrete pedestrain bridge with load bearing railings

Usually, concrete bridges contain a ‘thick’ bridge deck. For various reasons, bridges are constructed with railings. This thesis discusses the stability problem of concrete bridges, which are designed with integrated railings into the carrying construction. The most important advantage, using load bearing railings, is a thinner bridge deck. This...