Research at structural concrete laboratory
Concrete structures in direct contact with soil (tunnels, cut-and-cover
tunnels, pipes, retaining structures, foundations, abutments and
transition slabs of bridges, ...) are subjected to internal forces that
strongly depend on their deformations and those of the soil. The
study of this interaction is very important for the proper design of
A research on retaining structures and cut-and-cover tunnels has demonstrated that significant savings can be achieved if the structure has a sufficient deformation capacity and if the soil-structure interaction is correctly represented. This work, with the support of the Swiss Federal Road Office has led to the development of a new guideline for the design of cut-and-cover tunnels.
Another work in progress aims at checking up to what length integral bridges without expansion joints at the abutments can be built. In this case, the displacements at the bridge ends imposed by the expansion or contraction of the bridge superstructure are distributed in the soil and the pavement through the transition slab.
Soil-structure interaction in retaining structures and cut-and-cover tunnels
Soil-structure interaction at the abutments of integral bridges