CONNECTING APPARATUS AND CONNECTING METHOD OF PRECAST CONCRETE BOX UNITS AND PRECAST CONCRETE BOX UNIT COMPRISING DOUBLE CONNECTING APPARATUS

摘要

PURPOSE: An apparatus and a method for connecting precast concrete box units and a precast concrete box unit with a double connection apparatus are provided to secure enough shear resistance and bending stress resistance. CONSTITUTION: An apparatus for connecting precast concrete box units comprises first and second buried ends(210a,210b), a hollow anchor member(220) for main anchorage, a hollow coupling member(230) for main anchorage, and a hollow coupling member(240) for sub anchorage. The first and second buried ends are connected to tendon installation holes(111,121) formed respectively in precast concrete box units(110,120). The hollow anchor member for main anchorage is connected to the second buried end. The hollow coupling member for main anchorage is connected to the first buried end and engaged with the hollow anchor member for main anchorage. The hollow coupling member for sub anchorage fixes a tendon(300) to the first buried end.