A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Frequency method cable force calculation method for unknown rotation constraint boundary inhaul cable
The invention discloses a frequency method cable force calculation method for an unknown rotation constraint boundary inhaul cable. The method comprises the following steps: (1) according to engineering data, obtaining related parameters of the inhaul cable: inhaul cable linear density m, inhaul cable length L and inhaul cable flexural rigidity EI; (2) vibration signals of the inhaul cable are collected on site through a vibration sensor, and the frequency of the inhaul cable is obtained through analysis; (3) estimating the cable force T0 according to the hinged cables at the two ends through the fundamental frequency and related parameters of the cables; (4) estimating relative flexural rigidity xi according to the cable force T0; and (5) selecting a corresponding method to calculate the cable force T according to the relative flexural rigidity xi and the boundary condition of the inhaul cable, including a calculation method of the cable force of the consolidated inhaul cable and the consolidated-hinged inhaul cable obtained based on the frequency ratio, and the cable force of the boundary inhaul cable which is restrained by arbitrary rotation at the two ends of which xi is greater than or equal to 25 and less than or equal to 165. A practical new method is provided for cable force testing of inhaul cables, suspenders, suspension bridge anchor span cable strands and the like with indefinite end rotation constraint.
本发明公开了一种未知转动约束边界拉索的频率法索力计算方法。步骤如下：（1）根据工程资料，获得拉索的相关参数：拉索线密度m、拉索长度L、拉索抗弯刚度EI；（2）通过振动传感器现场采集拉索的振动信号，分析得到拉索的频率；（3）通过拉索的基频和相关参数，按两端铰接拉索估算索力T0；（4）根据索力T0估算相对抗弯刚度ξ；（5）根据相对抗弯刚度ξ和拉索的边界条件选择相应的方法计算索力T，包括基于频率比得到的固结拉索和固结‑铰接拉索索力计算方法，以及25≤ξ≤165的两端任意转动约束边界拉索的索力。为端部转动约束不明确的拉索、吊杆、悬索桥锚跨索股等的索力测试提供了一种实用的新方法。
Frequency method cable force calculation method for unknown rotation constraint boundary inhaul cable
The invention discloses a frequency method cable force calculation method for an unknown rotation constraint boundary inhaul cable. The method comprises the following steps: (1) according to engineering data, obtaining related parameters of the inhaul cable: inhaul cable linear density m, inhaul cable length L and inhaul cable flexural rigidity EI; (2) vibration signals of the inhaul cable are collected on site through a vibration sensor, and the frequency of the inhaul cable is obtained through analysis; (3) estimating the cable force T0 according to the hinged cables at the two ends through the fundamental frequency and related parameters of the cables; (4) estimating relative flexural rigidity xi according to the cable force T0; and (5) selecting a corresponding method to calculate the cable force T according to the relative flexural rigidity xi and the boundary condition of the inhaul cable, including a calculation method of the cable force of the consolidated inhaul cable and the consolidated-hinged inhaul cable obtained based on the frequency ratio, and the cable force of the boundary inhaul cable which is restrained by arbitrary rotation at the two ends of which xi is greater than or equal to 25 and less than or equal to 165. A practical new method is provided for cable force testing of inhaul cables, suspenders, suspension bridge anchor span cable strands and the like with indefinite end rotation constraint.
本发明公开了一种未知转动约束边界拉索的频率法索力计算方法。步骤如下：（1）根据工程资料，获得拉索的相关参数：拉索线密度m、拉索长度L、拉索抗弯刚度EI；（2）通过振动传感器现场采集拉索的振动信号，分析得到拉索的频率；（3）通过拉索的基频和相关参数，按两端铰接拉索估算索力T0；（4）根据索力T0估算相对抗弯刚度ξ；（5）根据相对抗弯刚度ξ和拉索的边界条件选择相应的方法计算索力T，包括基于频率比得到的固结拉索和固结‑铰接拉索索力计算方法，以及25≤ξ≤165的两端任意转动约束边界拉索的索力。为端部转动约束不明确的拉索、吊杆、悬索桥锚跨索股等的索力测试提供了一种实用的新方法。
Frequency method cable force calculation method for unknown rotation constraint boundary inhaul cable
未知转动约束边界拉索的频率法索力计算方法
TANG SHENGHUA (author) / GUO BAOFENG (author) / ZHANG XUEBING (author) / QIN FUQIAN (author) / ZHANG MAN (author) / KANG ZHENXING (author) / ZHOU JINRUI (author) / CAI DONGHENG (author) / CAI YIPU (author)
2024-06-07
Patent
Electronic Resource
Chinese
Inhaul cable connecting device, inhaul cable and automobile
| European Patent Office | 2023
| European Patent Office | 2023