公开(公告)号：US09777499B2

公开(公告)日：2017-10-03

申请号：US14740817

申请日：2015-06-16

Applicant: National Applied Research Laboratories

Inventor： Yu-Chi Sung ,  Kuo-Chun Chang ,  Kuan-Chen Lin ,  Hsiao-Hui Hung ,  Chi-Rung Jiang ,  Ming-Chun Lai

IPC: E04H9/02 ,  E04C3/22 ,  E04C3/34 ,  E04C5/06 ,  E04C5/08 ,  E01D19/02

CPC classification number: E04H9/025 ,  E01D19/02 ,  E04C3/22 ,  E04C3/34 ,  E04C5/0645 ,  E04C5/08

Abstract: A precast segment suitable for block-stacking concept is disclosed. The precast segment includes a first surface, an opposite second surface, plural through holes, and plural male-female connecting sets. The through holes extend from the first surface and toward the second surface to communicate between the first surface and the second surface. Each male-female connecting set includes a shear key and a joint hole, wherein the shear key protrudes from one of the first surface and the second surface to serve as a male connecting unit, and the joint hole is formed in the other of the first surface and the second surface to serve as a female connecting unit. Accordingly, the precast segments can be block-stacked by mortise-and-tenon joints to construct a bridge pier system. Compared to the conventional construction methodology, the present invention can enhance the efficiency of segment fabrication and avoid high prestress force.