Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for testing prestress of foundation pit anchor cable based on millimeter wave radar
The invention discloses a method for testing the prestress of a foundation pit anchor cable based on a millimeter wave radar, and the method comprises the steps: continuously transmitting electromagnetic waves to the anchor cable based on a radar detector, so as to obtain a corresponding phase change, and further calculating the vibration change displacement of the anchor cable; then, an anchor cable vibration frequency time history curve is obtained through software analysis, discrete Fourier transform is conducted on the anchor cable vibration frequency time history curve, a time domain signal is converted into a frequency domain signal, and the anchor cable prestress is calculated. According to the scheme, non-contact measurement is adopted, the prestress of a plurality of anchor cables can be measured at the same time, the principle is reliable, and the working efficiency is high; the millimeter wave radar can penetrate through the sheath to directly test a strong anchor cable reflection signal, the reliability of a test result is improved, and the radar can measure the middle position, which is slightly influenced by boundary conditions, of the anchor cable by adjusting the angle; the device has the advantages of non-contact measurement, all-weather performance, small external environment interference, capability of penetrating through an anchor cable sheath and the like.
本发明涉公开一种基于毫米波雷达测试基坑锚索预应力的方法，基于雷达检测仪向锚索连续发射电磁波，以得到相应的相位变化，进而计算锚索的振动变化位移；然后通过软件分析得到锚索振动频率时程曲线，并对其进行离散傅里叶变换，将时域信号转换为频域信号，计算锚索预应力。本方案采用非接触式测量，能同时实现对多根锚索预应力的测量，原理可靠、工作效率高；且毫米波雷达能穿透护套直接测试较强的锚索反射信号，提高测试结果的可靠性，而且雷达通过调整角度可以测量锚索受边界条件影响小的中部位置；具有非接触式测量、全天候、受外界环境干扰小、能穿透锚索护套等优势。
Method for testing prestress of foundation pit anchor cable based on millimeter wave radar
The invention discloses a method for testing the prestress of a foundation pit anchor cable based on a millimeter wave radar, and the method comprises the steps: continuously transmitting electromagnetic waves to the anchor cable based on a radar detector, so as to obtain a corresponding phase change, and further calculating the vibration change displacement of the anchor cable; then, an anchor cable vibration frequency time history curve is obtained through software analysis, discrete Fourier transform is conducted on the anchor cable vibration frequency time history curve, a time domain signal is converted into a frequency domain signal, and the anchor cable prestress is calculated. According to the scheme, non-contact measurement is adopted, the prestress of a plurality of anchor cables can be measured at the same time, the principle is reliable, and the working efficiency is high; the millimeter wave radar can penetrate through the sheath to directly test a strong anchor cable reflection signal, the reliability of a test result is improved, and the radar can measure the middle position, which is slightly influenced by boundary conditions, of the anchor cable by adjusting the angle; the device has the advantages of non-contact measurement, all-weather performance, small external environment interference, capability of penetrating through an anchor cable sheath and the like.
本发明涉公开一种基于毫米波雷达测试基坑锚索预应力的方法，基于雷达检测仪向锚索连续发射电磁波，以得到相应的相位变化，进而计算锚索的振动变化位移；然后通过软件分析得到锚索振动频率时程曲线，并对其进行离散傅里叶变换，将时域信号转换为频域信号，计算锚索预应力。本方案采用非接触式测量，能同时实现对多根锚索预应力的测量，原理可靠、工作效率高；且毫米波雷达能穿透护套直接测试较强的锚索反射信号，提高测试结果的可靠性，而且雷达通过调整角度可以测量锚索受边界条件影响小的中部位置；具有非接触式测量、全天候、受外界环境干扰小、能穿透锚索护套等优势。
Method for testing prestress of foundation pit anchor cable based on millimeter wave radar
一种基于毫米波雷达测试基坑锚索预应力的方法
LIU QUANWEI (Autor:in) / WANG XILEI (Autor:in) / YE SHOUJIE (Autor:in) / HUANG CHENG (Autor:in) / LIU LINSHENG (Autor:in) / YANG ZHONGNIAN (Autor:in)
07.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
/
G01L
Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden
,
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
/
G01S
RADIO DIRECTION-FINDING
,
Funkpeilung
Anchor cable prestress nondestructive testing system and testing method
| Europäisches Patentamt | 2022
Anchor cable prestress compensation construction method
| Europäisches Patentamt | 2024
Foundation pile static load test method adopting anchor cable to apply prestress
| Europäisches Patentamt | 2024
Anchor cable tensioning method for reducing prestress loss of anchor cable
| Europäisches Patentamt | 2024