Seismic performance and bearing capacity analysis of corrugated pipe through-hole columns
In response to the question of whether the seismic performance and bearing capacity of corrugated pipe through-hole columns can achieve"equivalent cast-in-place",this paper analyzed the hysteresis performance,skeleton curve,displacement ductility,stiffness degradation,energy dissipation capacity and other seismic performance indexes of corrugated pipe through-hole column specimens(including one column without defects and one prefabricated column with 30％grouting defects)by means of quasi-static test,and given the formula for calculating the bearing capacity of the corrugated pipe through-hole columns.The quasi-static tests show that the pipe can produce effective circumferential restraint,and the corrugated pipe through-hole column can meet the requirements of"equivalent cast-in-place";the grouting defects of 30％or less in the pipe will weaken the seismic performance of the prefabricated columns,but the effect is relatively small;the results of the calculation of the bearing capacity formula for corrugated pipe through-hole columns coincide well with the test results.This study can provide some theoretical basis for the application of corrugated pipe through-hole columns in the field of assembled structures and the preparation of corresponding specifications.
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