公开(公告)号：US12000141B2

公开(公告)日：2024-06-04

申请号：US17777862

申请日：2021-06-01

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Fuyou Xu ,  Weizhi Zhu ,  Bo Wang ,  Wenjie Li ,  Gao Liu

IPC: E04B1/98 ,  E01D19/00 ,  F16F15/067

CPC classification number: E04B1/98 ,  E01D19/00 ,  F16F15/067

Abstract: The present invention provides a semi-active vibration absorption and energy dissipation control system for restraining vortex-induced vibration of bridges. It has the advantages and characteristics that: (1) springs are horizontally placed at the bottom of a beam, and lengths are not limited, so that the frequency requirement of a low-frequency target can be satisfied; (2) different target frequencies can be realized through different combinations of a plurality of springs connected in series and in parallel, so that multi-order vortex-induced vibration control needs are satisfied; (3) the springs made of fiber reinforced nylon materials are adopted, and are notched, so that a frequency implementation range can be greatly widened; (4) the material and the form of a mass body are not limited, and a water bag can be used, which has low cost and is convenient for disassembly, assembly and mass adjustment.

公开(公告)号：US11807998B2

公开(公告)日：2023-11-07

申请号：US17777773

申请日：2021-02-22

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Fuyou Xu ,  Minshan Pei ,  Gao Liu ,  Wenjie Li ,  Taotao Mao

IPC: E01D19/00 ,  F16F7/10

CPC classification number: E01D19/00 ,  F16F7/10 ,  F16F2222/08 ,  F16F2230/0005

Abstract: The present invention belongs to the technical field of wind-induced vibration control study of bridges, and provides a dangling net cloth device for suppressing flutter of a sea-crossing bridge, i.e., a large-area dangling net cloth equipped with multiple balance weights, which is suspended below a girder by ropes and is immersed in water. When wind-induced vibration occurs on a bridge, the device is driven to move in the water, and gravity of the device as well as a huge additional mass force and an additional damping force produced by the water on the net cloth will do negative work on the girder to consume vibration energy of the bridge and effectively suppress large vibration of the bridge. The device adopts lightweight standardized components which are convenient to install, detach, transport, and store, and has the advantages of safety, reliability, economy, and practicality.