After the foundation pile is used to make holes and before the concrete is poured, embed a number of sonic logging pipes in the pile as the channels for the acoustic wave transmitting and receiving transducers.
Description
Crosshole Sonic Logging Software features •Ability to simultaneously review six data profiles •History mapping of already collected data •First Arrival Time (FAT) detection •Easy defect identification •Three methods of signal strength evaluation (Speed of sound,energy or amplitude) •Sonic Map - Signal strength versus time and depth in traditional waterfall diagram •First Arrival Time - Signal travel time from transmitter to receiver, versus depth •Wave-speed Plot - Wave-speed (an indicator of concrete strength) versus depth •Wave–speed Table - Wave-speeds, means and standard deviations •Energy or Amplitude Plot - Signal strength versus depth •Defect location graphically and in table format •PSD curve graph-shows the relationship curve between PSD and depth (conducive to tube tilt judgment) •The defect location can be displayed in graphs and lists
Crosshole Sonic LoggingCases Acoustic tube oblique or bent
Pile body segregation The pile is 36 meters long and the pile body is separated.
The pile length is 54 meters, and the pile bottom sediment.
The pile is 45 meters long, 2-4 meters from the top of the pile, the hole wall collapses to form a mud mass.
The pile is 46 meters long, with 24-25 meters segregated under the top of the pile.
The pile is 68 meters long, and it is separated at 12-13 meters below the top of the pile.
The pile is 44 meters long, and the vertical sediment is 3 meters below the pile top.
The pile is 72 meters long, with 3.5-4.5 meters of faulted sediment under the pile top.
