A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bridge pavement unevenness identification method based on limited vehicle response
The invention discloses a bridge pavement unevenness identification method based on limited vehicle response. The method comprises the following steps that 1, a vehicle-mounted sensor is arranged in the center position of an axle of a measuring vehicle or on a carriage over the axle of the measuring vehicle; 2, a tractor is adopted to guide the measuring vehicle to pass through the bridge to be measured at a constant speed, and the vertical response of the measuring vehicle is collected; 3, constructing a balance equation of the vehicle and the bridge, obtaining a state-space equation of the axle coupling system according to the defined state vector, and carrying out discretization representation on the state-space equation of the axle coupling system; 4, taking the acceleration response as an observation value, and carrying out discretization representation on the vehicle acceleration; 5, representing the state vector at the (k + 2) moment by using the state vector at the k moment to obtain the vehicle displacement at the (k + 2) moment; 6, considering observation noise existing in practice to obtain an improved system observation equation; and step 7, according to an extended Kalman filtering algorithm, solving to obtain the road surface unevenness.
本发明公开了一种基于有限车辆响应的桥梁路面不平整度识别方法，包括如下步骤：步骤一：将车载传感器布置在测量车车轴的中央位置或正上方的车厢上；步骤二：采用牵引车引导测量车匀速驶过待测桥梁，采集测量车的竖向响应；步骤三：构建车辆和桥梁的平衡方程，根据定义的状态向量得到车桥耦合系统的状态空间方程，并将车桥耦合系统的状态空间方程进行离散化表示；步骤四：以加速度响应作为观测值，将车辆加速度进行离散化表示；步骤五：以用k时刻状态向量表示k+2时刻的状态向量，得到k+2时刻的车辆位移；步骤六：考虑实际中存在的观测噪声,得到改进的系统观测方程；步骤七：根据扩展卡尔曼滤波算法，求解得到路面不平整度。
Bridge pavement unevenness identification method based on limited vehicle response
The invention discloses a bridge pavement unevenness identification method based on limited vehicle response. The method comprises the following steps that 1, a vehicle-mounted sensor is arranged in the center position of an axle of a measuring vehicle or on a carriage over the axle of the measuring vehicle; 2, a tractor is adopted to guide the measuring vehicle to pass through the bridge to be measured at a constant speed, and the vertical response of the measuring vehicle is collected; 3, constructing a balance equation of the vehicle and the bridge, obtaining a state-space equation of the axle coupling system according to the defined state vector, and carrying out discretization representation on the state-space equation of the axle coupling system; 4, taking the acceleration response as an observation value, and carrying out discretization representation on the vehicle acceleration; 5, representing the state vector at the (k + 2) moment by using the state vector at the k moment to obtain the vehicle displacement at the (k + 2) moment; 6, considering observation noise existing in practice to obtain an improved system observation equation; and step 7, according to an extended Kalman filtering algorithm, solving to obtain the road surface unevenness.
本发明公开了一种基于有限车辆响应的桥梁路面不平整度识别方法，包括如下步骤：步骤一：将车载传感器布置在测量车车轴的中央位置或正上方的车厢上；步骤二：采用牵引车引导测量车匀速驶过待测桥梁，采集测量车的竖向响应；步骤三：构建车辆和桥梁的平衡方程，根据定义的状态向量得到车桥耦合系统的状态空间方程，并将车桥耦合系统的状态空间方程进行离散化表示；步骤四：以加速度响应作为观测值，将车辆加速度进行离散化表示；步骤五：以用k时刻状态向量表示k+2时刻的状态向量，得到k+2时刻的车辆位移；步骤六：考虑实际中存在的观测噪声,得到改进的系统观测方程；步骤七：根据扩展卡尔曼滤波算法，求解得到路面不平整度。
Bridge pavement unevenness identification method based on limited vehicle response
基于有限车辆响应的桥梁路面不平整度识别方法
YANG YONGBIN (author) / LI ZHI (author) / LIU ZHEN (author)
2023-10-31
Patent
Electronic Resource
Chinese
IPC:
G01B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
,
Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen
/
E01C
Bau von Straßen, Sportplätzen oder dgl., Decken dafür
,
CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE
/
G06F
ELECTRIC DIGITAL DATA PROCESSING
,
Elektrische digitale Datenverarbeitung
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