Soil-Structure Interaction of Flexible Temporary Trench Box: Parametric Studies Using 3D FE Modelling

Table 5

Construction sequence of FE modelling for sensitive blue clay in PLAXIS-3D.

Phase	In the model	Drainage
Phase 0	Only soil elements (no structure)	procedure
Phase 1	Excavation (1^st layer, depth: 0.6 m) fissured brown clay	Drained
Phase 2	Excavation (2^nd layer: 0.6 to 2 m) brown clay	Plastic: undrained B^1 (soil model)
Phase 3	Adding structural element	Plastic: undrained B^1 (soil model)
Phase 4	Excavation (3^rd layer: 2 m to 6 m) sensitive blue clay	Plastic: undrained B^1 (soil model)

¹In the undrained (B) drainage type, modelling of undrained behaviour using effective parameters for stiffness and undrained shear strength parameters is allowed.