Laminated Mortise and Tenon Column with Central Reinforcement for Improving Seismic Performance of Underground Structures

Abstract

The invention discloses a laminated mortise and tenon column with central reinforcement for improving seismic performance of underground structures, belongs to the technical field of earthquake-resistant column structures, including a core column; an external support component, where the external support component includes a plurality of mortise and tenon concrete column sections, the two adjacent mortise and tenon concrete column sections are connected through mortise and tenon structures, the middle of the mortise and tenon concrete column sections is provided with a first through hole, and the core column penetrates through the first through hole; and a plurality of drag-reducing and shock-absorbing pieces, where the drag-reducing and shock-absorbing pieces are sandwiched between the two adjacent mortise and tenon concrete column sections. According to the invention , the mortise and tenon concrete column sections on the outer side and the drag-reducing and shock-absorbing pieces give the core column a certain amount of bending space and bear the vertical load, avoiding the concrete cracking on the tensile side that can reduces the overall seismic performance when the core column bears excessive bending moment. With the operation of drag-reducing and shock-absorbing pieces, part of seismic energy can be effectively dissipated to make the underground structure safer.

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