A field study was initiated in 1988 to investigate the in-service performance of an anchored diaphragm wall embedded in over-consolidated London Clay, which was constructed in 1972. Instruments were installed in front of and behind the wall and in situ testing performed to establish the stress regime in the ground close to the structure. Lateral stresses were determined from push-in pressure cells, Camkometer and Marchetti dilatometer measurements. Piezometers were installed to monitor porewater pressures. Information on long term performance was also obtained from the load cells and inclinometer tubes installed at the time of construction to monitor anchor loads and both wall and ground movements. The results are discussed in the context of measurements made during construction of the wall and also compared with finite element predictions.
Samenvatting