公开(公告)号：US20170253526A1

公开(公告)日：2017-09-07

申请号：US15512068

申请日：2014-10-24

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Bo WU ,  Qiang ZHANG

IPC: C04B18/16 ,  E04C3/34 ,  E04C3/36

CPC classification number: C04B18/167 ,  C04B18/04 ,  C04B28/02 ,  E04C3/30 ,  E04C3/34 ,  E04C3/36 ,  Y02W30/95 ,  C04B14/48 ,  C04B32/02

Abstract: An axial compression steel tubular column with internal local restraint and filled with high strengthen compound concrete containing normal-strength demolished concrete lumps and a construction process. The axial compression column includes a steel tube (1), high-strength fresh concrete (2), normal-strength demolished concrete lumps (3), a spiral stirrup (4), and longitudinal erection bars (6). The spiral stirrup (4) is arranged at a middle part inside the steel tube (1). The high-strength fresh concrete (2) is poured and the normal-strength demolished concrete lumps (3) are put alternately inside the steel tube (1). A compressive strength of the high-strength fresh concrete (2) is 30˜90 MPa greater than that of the normal-strength demolished concrete lumps (3).

公开(公告)号：US20170254083A1

公开(公告)日：2017-09-07

申请号：US15512069

申请日：2014-10-24

Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY

Inventor： Bo WU ,  Qiang ZHANG

IPC: E04C3/32 ,  E04C3/34 ,  B28B1/16 ,  B28B1/08 ,  C04B18/16 ,  C04B28/02

CPC classification number: E04C3/32 ,  B28B1/08 ,  B28B1/16 ,  C04B18/16 ,  C04B28/02 ,  C04B2111/2053 ,  C04B2201/50 ,  C04B2201/52 ,  E04C3/34 ,  E04C3/36 ,  E04H9/021

Abstract: A seismic steel tubular column with internal local restraint and filled with high strengthen compound concrete containing normal-strength demolished concrete lumps, and a construction process. The seismic column includes a steel tube (1), high-strength fresh concrete (2), normal-strength demolished concrete lumps (3), horizontal stirrups (4), and longitudinal erection bars (5). The horizontal stirrups (4) are arranged at upper and lower ends inside the steel tube (1). The high-strength fresh concrete (2) is poured and the normal-strength demolished concrete lumps (3) are put alternately inside the steel tube (1). A compressive strength of the high-strength fresh concrete (2) is 30˜90 MPa greater than that of the normal-strength demolished concrete lumps (3).