- Patent Title: Method of constructing an axial compression steel tubular column
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Application No.: US15512068Application Date: 2014-10-24
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Publication No.: US10087106B2Publication Date: 2018-10-02
- Inventor: Bo Wu , Qiang Zhang
- Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
- Applicant Address: CN Guangdong
- Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
- Current Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
- Current Assignee Address: CN Guangdong
- Agency: JCIPRNET
- Priority: CN201410476627 20140917
- International Application: PCT/CN2014/089375 WO 20141024
- International Announcement: WO2016/041236 WO 20160324
- Main IPC: C04B18/16
- IPC: C04B18/16 ; E04C3/34 ; E04C3/36 ; C04B28/02 ; C04B18/04 ; E04C3/30

Abstract:
An axial compression steel tubular column with internal local restraint and filled with high-strength 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).
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