The invention provides a calculation method of a
pipe joint
hoop strain of a tide load sinking
pipe tunnel. The method includes steps of, assuming a back
silt layer on the
pipe joint as an impervious
bed, and regarding the change of the
tide level as a large area load pO added on the impervious
bed, wherein the location of an underground level is the top face of the impervious
bed; not considering about influence of tide on the pipe joint structure, calculating water, soil pressure and
subgrade reaction acted on the outer wall of the pipe joint; applying a winkler foundation module, regarding the loop strain calculation as the plane strain problem; analyzing the loop stress and deformation of the pipe joint structure by a load-structure method; through the calculation of
cross model stress of the pipe joint, acquiring the relationship of the loop stress strain relationship of the pipe joint; finally, through calculation, acquiring the loop
strain distribution of inner and outer walls of the pipe joint under one
tide level and influence of the loop strain of every point of inner and outer walls of the pipe joint along with the change of the
tide level. The calculation result can be used for predicting the loop strain of the pipe joint of the sinking pipe tunnel in operation stage, judging the part where may generate crack, and carrying out key monitoring and prevention.