APPARATUS FOR PRESTRESSING CONCRETE FLOOR OF INCLINED SHAFT WALL

摘要

An apparatus for prestressing a concrete floor of an inclined shaft wall isprovided,comprising two end bearing components, a corrugated pipe, a tension bearingrod piece and twoanchor heads. The tension bearing rod piece comprises a left and right tensionbearing rodsconnected via a loading mechanism and passes through the corrugated pipe. Thetwo end bearingcomponents are respectively arranged at the left and right ends of the tensionbearing rod piece.The two anchor heads respectively lock the left and right end bearingcomponents. Beforepouring the shaft wall's floor, the loading apparatus is pre-buried. After thefloor concrete'sstrength increases to certain extent, a transverse prepressing stress isapplied to the floor concretethrough the loading mechanism. An internal space of the loading apparatus isblocked bygrouting to integrate the tension bearing component, the loading apparatus andthe like with thefloor concrete.