Page 3 - INSTRUMENTED PILE LOAD TEST ON SOFT GROUND
P. 3

Construction Problems on Soft Soils







                          High Compressibility                                      • Excessive Settlements





                             Low Shear Strength                                     • Stability Problems






                                  Creep Behavior                                    • Settlement in the Service Period







          When one or more upper soil layers are highly compressible and
          too weak to support the load transmitted by the superstructure,

          piles are used to transmit the load to underlying bedrock or a                                               SPT-No                         SPT-No                     SPT-No
          stronger soil layer, as shown in Figure-a-b



          When bedrock is not encountered at a reasonable depth below
          the ground surface, piles are used to transmit the structural load

          to the soil gradually. The resistance to the applied structural load                                           RQD
          is derived mainly from the frictional resistance developed at the

          soil-pile interface (see Figure-c)                                                                                                          SPT-No





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