Abstract:Based on a project in Ningbo, the vertical compressive static load test of super-long and large-diameter pile is carried out. And the load-settlement relationship curve of pile top is obtained, from which the ultimate bearing capacity of pile is obtained. Steel bar stress meters are buried at different depths of the pile. During the static load test period, the readings of steel bar stress meters at different depths under different loads are recorded. The variation law of axial force with load at different positions of the pile body is obtained by conversion. And the ultimate side friction and ultimate end resistance of the pile body are obtained. Based on the test results, the bearing characteristics of super-long and large-diameter piles are analyzed, and the ultimate bearing capacity of pile foundation obtained by axial force test is compared with that obtained by static load test, which is consistent with each other and proves the reliability of the test results.
