Accession Number : ADA304988

Title :   Montgomery Point Lock and Dam Gate Study: Report 2, Montgomery Point Torque-Tube Gate, A Structural Model Study.

Descriptive Note : Technical rept. no. 2,

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS HYDRAULICS LAB

Personal Author(s) : DE Bejar, Luis A.

PDF Url : ADA304988

Report Date : NOV 1995

Pagination or Media Count : 188

Abstract : Report 2 of the final report for model studies of the torque-tube gate system at Montgomery Point Lock and Dam deals with the structural aspects of the project. Analytical models for the theoretical prediction of the hydraulic forces on the gate are developed. The results of this formulations and multiple corresponding experiments on the physical model are synthesized into mathematical expressions for hydraulic pressure fields and support bearing reactions for design. Extreme-value analyses of the data in the controlling tests and additional experiments predict hydraulic pressures on the gate under unusual and improper operation conditions. The dynamic properties of the gate (natural frequencies of free vibration, modal shapes, and equivalent viscous damping ratios) are determined for evaluation of structural safety. Simplified engineering models to predict the gate's structural response from both deterministic and stochastic points of view are developed. The study concludes with a basic spectral analysis of the data collected to investigate the safety of the gate against fatigue in the long term. (MM)

Descriptors :   *DAMS, *LOCKS(WATERWAYS), MATHEMATICAL MODELS, LOAD DISTRIBUTION, VIBRATION, SCALE MODELS, ACCELEROMETERS, PROBABILITY DISTRIBUTION FUNCTIONS, DAMPING, EIGENVALUES, RESONANT FREQUENCY, STRUCTURAL RESPONSE, SPECTRAL ENERGY DISTRIBUTION, VISCOSITY, SPECTRUM ANALYSIS, HYDRODYNAMICS, HYDRAULIC MODELS, BENDING MOMENTS, HYDROSTATIC PRESSURE, HYDRAULIC PRESSURE, ARKANSAS.

Subject Categories : Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE