KH P/2024/00004CN A 20250207 20060101
G
01 N 29 04 A 20060101
G
01 N 29 44 A KH P/2024/00004CN 20240614 CCCC INFRASTRUCTURE MAINTENANCE GROUP LTD.
Building 8, Jiangsu Building, No. 88 Ding, Andingmenwai Street, Dongcheng District, Beijing, 100011, Beijing 100011 CN
CN CCCC ROAD AND BRIDGE INSPECTION AND MAINTENANCE CO., LTD.
Fu Qian Street No. 9-155, Niulanshan Town, Shunyi District, Beijing 101300 CN
CN TSINGHUA UNIVERSITY
No. 1, Tsinghua Park, Haidian District, Beijing 100084 CN
CN QIAO LEI
CN
GUO HE
CN
WANG SHICHENG
CN
LIN PING
CN
YAO JUNHUA
CN
LI SHICHUN
CN
HU ZHUYOU
CN
XIANG ZHIHAI
CN
LU QIUHAI
CN
ABACUS IP
No.436, Plov Lum, Sangkat Kakab, Khan Posenchey, Phnom Penh KH
PASSIVE EXCITATION-TYPE BRIDGE DAMAGE EVALUATION METHOD PASSIVE EXCITATION-TYPE BRIDGE DAMAGE EVALUATION METHOD PT202501-A 20250207 20240614 20250207 Re-registration of Chinese Patent

<p>A passive excitation-type bridge damage evaluation method: excitation teeth uniformly distributed on a single excitation wheel are used for performing passive excitation at a fixed excitation frequency on a bridge deck, and an acceleration sensor is used for acquiring an acceleration signal transmitted to the excitation teeth from the bridge deck. By means of extracting a maximum value point of an equivalent acceleration speed from a time-frequency analysis result, a stiffness mutation moment is determined to have been detected, and according to an inflection point in a corresponding power spectrogram, a bridge damage position is determined and a degree of damage is determined.</p>

<p>A passive excitation-type bridge damage evaluation method: excitation teeth uniformly distributed on a single excitation wheel are used for performing passive excitation at a fixed excitation frequency on a bridge deck, and an acceleration sensor is used for acquiring an acceleration signal transmitted to the excitation teeth from the bridge deck. By means of extracting a maximum value point of an equivalent acceleration speed from a time-frequency analysis result, a stiffness mutation moment is determined to have been detected, and according to an inflection point in a corresponding power spectrogram, a bridge damage position is determined and a degree of damage is determined.</p>