The Western Scheldt Tunneling Project in the Netherlands provided a unique opportunity to evaluate the effects of trimix usage on the health of compressed air workers and the efficiency of the project. Data analysis addressed 318 exposures to compressed air at 3.9-4.4 bar gauge and 52 exposures to trimix (25% oxygen, 25% helium, and 50% nitrogen) at 4.6-4.8 bar gauge. Results revealed three inc...

The analytical solutions of wave induced horizontal and vertical forces on perforated caissons resting on porous elastic seabed have been established. The solution in the seabed is divided into a symmetric part and an anti-symmetric part. A numerical experiment has been carried out to examine the effects on horizontal forces, vertical forces and phase lags between them due to the relative wave ...

With the continuous improvement of urban residents’ lives, demand for infrastructure construction increases, requiring more and advanced engineering technology. We should not only speed up progress project, but also reduce impact on surrounding environment. Our company has had several achievements in this regard, prefabricated open caisson process is one them. In paper, application method analy...

Abstract Caisson foundations, typically adopted for both onshore and offshore structures, are usually subject to combined loading acting during working conditions exceptional events such as earthquakes. Assessment of their performance under general loadings is therefore fundamental, serviceability ultimate limit states. In this study, a simplified displacement-based approach, aimed at prelimina...