Related Experiment Video
Updated: Jun 14, 2025

A Vibrotactile Feedback Device for Seated Balance Assessment and Training
Published on: January 20, 2019
Analysis of the frequency-response stability and reliability of a tower-column unstable rock mass on a high and steep
Fuchuan Zhou1,2, Xinrong Liu3, Hongmei Tang4
1School of Civil Engineering, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing, 400045, China.
Abstract:
The first-order second-moment checking point method was introduced to judge the instability probability and evaluate the stability of the TCURM. The frequency-response stability calculation and the reliability results were compared, and a frequency-response stability and reliability analysis method was proposed. Taking the Zengziyan W12# unstable rock mass in Nanchuan, Chongqing, China, as an example, the calculation shows that the dynamic indexes and geological indexes decrease as the stiffness of the deterioration area decreases. According to the statistical data of the laboratory test and the field investigation, reliability theory is used to evaluate the stability of the TCURM, and the failure probabilities are 80.3% and 96.27% under natural and saturated conditions, which correspond to states of poor stability and instability, respectively. The reliability evaluation results are consistent with the conclusion of the frequency-response stability analysis. The new method can provide a theoretical basis for developing the dynamic monitoring and early warning indicators of the TCURM and disaster prevention and mitigation in mountainous areas.
Related Concept Videos
Stability of structures
Beams with Unsymmetric Loadings
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
Design of Columns under an Eccentric Load
Design of Columns under a Centric Load
Euler's formula is applicable under the assumption that the column is a perfect, straight, homogenous prism, and it is operating...
Stability
The stability of an LTI system is determined by the roots of its characteristic equation, known as poles. A system is stable if it produces a bounded...
Euler's Formula for Pin-Ended Columns
To calculate the critical load,...

