公开(公告)号：US20250155569A1

公开(公告)日：2025-05-15

申请号：US18940840

申请日：2024-11-08

Applicant: Southeast University

Inventor： Yanan DU ,  Decheng FENG ,  Gang WU

IPC: G01S13/90 ,  G06T7/11 ,  G06T7/521 ,  G06T7/55 ,  G06T17/05 ,  G06V20/10 ,  G06V20/17 ,  G06V20/50

Abstract: The present invention discloses a method and system for evaluating post-earthquake damage of building groups based on interferometric synthetic aperture radar (InSAR). Method includes: determining an investigation region, acquiring pre- and post-earthquake radar images of a corresponding district, and acquiring radar datasets included in radar images; acquiring a radar line-of-sight (LOS)-direction deformation map of investigation region by processing pre- and post-earthquake radar images using D-InSAR; acquiring a deformation in a main earthquake direction by decomposing an LOS-direction deformation; drawing a deformation classification map of buildings; acquiring pre- and post-earthquake optical remote sensing images of investigation region, and locating post-earthquake collapsed buildings; locating collapsed buildings in deformation classification map, comparing optical remote sensing images with deformation classification map, and locating exact positions of collapsed buildings; and evaluating post-earthquake damage of the buildings by evaluating post-earthquake damage conditions based on position information of collapsed buildings and the deformation classification map.

公开(公告)号：US20250073911A1

公开(公告)日：2025-03-06

申请号：US18896856

申请日：2024-09-25

Applicant: SOUTHEAST UNIVERSITY

Inventor： Guangming SONG ,  Feng XIE ,  Juzheng MAO ,  Fei WANG ,  Jun ZHOU ,  Aiguo SONG ,  Gang WU

IPC: B25J11/00 ,  B25J5/00 ,  B25J9/16

Abstract: Disclosed are an embracing crawling robot for detecting an underwater pier of a highway bridge and a detection method therefor. The robot includes a main body, underwater lighting systems, tool compartments, depth metering modules, servo driving wheels, inclination measurement modules, underwater manipulator arms, vision array modules, synchronized stretching and fixing systems, and driven wheels. The robot is capable of crawling around an underwater pier of a highway bridge and operating stably in an underwater environment. After cleaning surface attachments on the underwater pier, the robot performs visual detection of a disease; and after determining type and location information of the disease, the robot will transmit disease information back. The robot is capable of crawling around the underwater pier of the highway bridge stably at any depths, perceiving depth and visual information under high-speed and turbid water conditions, thereby realizing detection of the disease on the underwater pier.

公开(公告)号：US20190048602A1

公开(公告)日：2019-02-14

申请号：US16078599

申请日：2017-03-30

Applicant: SOUTHEAST UNIVERSITY

Inventor： Gang WU ,  Xinghua LI

IPC: E04G23/02

Abstract: An automatic tensioning system for strengthening a beam, a slab and a column by a pre-stressed FRP plate comprises a tensioning end anchor (1), a fixed end anchor (10), and a tensioning bracket (3) connected to the tensioning end anchor (1). A centre-hole jack (16) is provided in the middle of the tensioning bracket (3), a threaded rod (8) passes through the tensioning bracket (3) and is then connected to the centre-hole jack (16), and an upper toothed nut (13) and a lower toothed nut (19) respectively driven by a driving mechanism are provided on two sides of the tensioning bracket (3) on the threaded rod (8). A binary clip-type fixture (4) is further comprised, an upper surface thereof is provided with a cylinder (6), and a sleeve (7) nested outside the cylinder (6) is connected to the threaded rod (8).

公开(公告)号：US20180305929A1

公开(公告)日：2018-10-25

申请号：US15769771

申请日：2017-03-30

Applicant: SOUTHEAST UNIVERSITY

Inventor： Zeyang SUN ,  Gang WU

IPC: E04C3/36 ,  E04C5/06 ,  E04C5/04 ,  E04H9/02 ,  E04G23/02

CPC classification number: E04C3/36 ,  E01D19/02 ,  E01D22/00 ,  E04B1/30 ,  E04B2103/02 ,  E04B2103/06 ,  E04C3/34 ,  E04C5/015 ,  E04C5/04 ,  E04C5/0618 ,  E04C5/0622 ,  E04G23/02 ,  E04G23/0218 ,  E04G2023/0251 ,  E04H9/024 ,  E04H9/025

Abstract: A steel-fiber reinforced polymer (FRP) composite material reinforced concrete column comprises an inner steel pipe arranged in the center, wherein the inner steel pipe is internally provided with an unbonded steel strand; the outside of the inner steel pipe is provided with an outer steel pipe, concrete is poured between the inner steel pipe and the outer steel pipe, a plurality of additional small steel pipes are evenly arranged outside the outer steel pipe, and each of the additional small steel pipes is internally provided with an additional unbonded steel strand. A composite bar cage coaxial with the outer steel pipe and arranged on the outside thereof is also provided, wherein both the outer steel pipe and the composite bar cage are covered by high-ductility concrete, and at a core area, the outside of the high-ductility concrete is wrapped with an anti-spalling layer.