tunnels

Decrease of the maximum speed in highway tunnels as a measure to foster energy savings and sustainability

The high energy consumption of the lighting installations in highway tunnels has become a hot topic in the last few years due to the high figures in terms of money, consumed energy, use of raw materials, emissions of greenhouse gases due to the remarkable number of manufactured elements, and maintenance, among others. In spite of the different strategies proposed up to date and their savings, the potential benefits of decreasing the maximum speed allowed in tunnels have not been considered in depth as a complementary measure yet.

The response of framed buildings on raft foundations to tunnelling. A centrifuge and numerical modelling study

The expansion of cities often involves tunnel construction, which may result in detrimental effects on existing structures. This paper considers the interaction between tunnelling-induced ground deformations and framed buildings on raft foundations. The aim of the paper is to study the differences between scenarios where an equivalent plate and a real frame are used in the tunnel-building interaction problem. The paper includes experimental data obtained from geotechnical centrifuge tests and predictions of building response based on numerical analyses.

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