Objective

QUAD-S Monitoring uses vibration-based monitoring with accelerometers and high-frequency data acquisition to measure cable tension accurately. Methodology, installation of sensors on cables, and real-time analysis for cable-stayed bridge safety.

Challenge

Accurately measuring cable tension safely and efficiently.

Solution

QUAD-S Monitoring uses vibration-based monitoring with accelerometers and high-frequency data acquisition to measure cable tension accurately.

Methodology

Installation of accelerometers directly on cables using specialized clamps.
Inducing vibrations either manually or with a rubber mallet.
Capturing acceleration signals and processing them through Fast Fourier Transform (FFT) to determine fundamental vibration frequencies.

Application Conditions

Measurements performed with partial road closure to eliminate traffic-induced vibrations.
Utilized lifting equipment (nacelle) to safely access cable locations.

Monitoring System

Sensors

Data Acquisition

Results

Real-time, precise tension measurement within ±5%, enabling proactive maintenance and ensuring structural safety.

Project Gallery

Cable-stayed bridge with monitoring setup

Close-up of cable monitoring installation

Estimating Cable Tension by Vibration Method

Quick Summary

Related Equipment