Structural Performance Measurements and Design Parameter Validation for Tsing Ma Suspension Bridge

1999 ◽  
pp. 487-496 ◽  
Author(s):  
C LAU ◽  
W MAK ◽  
K WONG ◽  
W CHAN ◽  
K MAN ◽  
...  
Keyword(s):  
Design Parameter ◽  
Suspension Bridge ◽  
Structural Performance ◽  
Performance Measurements

STRUCTURAL PERFORMANCE EVALUATION OF TSING MA BRIDGE DECK USING LONG-TERM MONITORING DATA

2008 ◽  
Vol 22 (11) ◽  
pp. 875-880 ◽  
Author(s):  
Y. Q. NI ◽  
H. W. XIA ◽  
J. M. KO
Keyword(s):  
Hong Kong ◽  
Performance Evaluation ◽  
Monitoring System ◽  
Measurement Data ◽  
Suspension Bridge ◽  
Monitoring Data ◽  
Structural Performance ◽  
Railway Traffic ◽  
Tsing Ma Bridge

The Tsing Ma Bridge in Hong Kong is suspension bridge with a main span of 1377 m carrying both highway and railway traffic. After completing its construction in 1997, the bridge was instrumented by the Hong Kong SAR Government Highways Department with a long-term structural health monitoring system comprising about 300 sensors permanently installed on the bridge. As part of this monitoring system, a total of 110 strain gauges have been installed to measure strain at the deck cross-sections and bearings. In this study, a method for real-time structural performance evaluation of the stiffening deck system making use of long-term strain measurement data is proposed and verified using the strain monitoring data from a typical deck cross-section of the Tsing Ma Bridge.

scholarly journals Nylon lattice design parameter effects on additively manufactured structural performance

2022 ◽  
Vol 125 ◽  
pp. 104869
Author(s):  
Daniel A. Porter ◽  
Matthew A. Di Prima ◽  
Yutika Badhe ◽  
Ankit R. Parikh
Keyword(s):  
Design Parameter ◽  
Structural Performance ◽  
Lattice Design

Verification of Structural Performance of a Main Tower Inclined Suspension Bridge by Simple Monitoring and FE Analysis

2017 ◽  
Vol 12 (3) ◽  
pp. 406-414 ◽  
Author(s):  
Carlos Arturo Liñan Panting ◽  
◽  
Kohei Nagai ◽  
Eiji Iwasaki ◽  
Thein Nu ◽  
...  
Keyword(s):  
Tensile Force ◽  
Suspension Bridge ◽  
Measured Data ◽  
Fe Analysis ◽  
Road Surface ◽  
Structural Performance ◽  
Construction Process ◽  
Surface Level ◽  
The Road ◽  
Concrete Blocks

This study conducted a simple monitoring for a deformed suspension bridge in Myanmar to confirm advances in deformation and verified the structural performance by FEM. The bridge is Twantay Bridge those main towers were inclined due to the movement of anchor blocks, that resulted in lowering of the road surface level. Therefore, inclinometers were set for simple monitoring to confirm advances in the deformation. The result of measurements performed for 50 days did not indicate any significant advances in inclination with respect to the main towers. The FE analysis to evaluate the structural performance estimated the current condition of the bridge by reproducing the construction process of the bridge and simulating the setting and removal of concrete blocks used as bridge railings as well as the sliding of anchor blocks. At each step of the analysis, the results were compared with the measured data to verify the appropriateness of the analysis. The findings confirmed that the current tensile force of the cable did not result in hazardous conditions that led to the rupture of the cable.

Control of Vibrations due to Moving Loads on Suspension Bridges

2006 ◽  
Vol 11 (3) ◽  
pp. 293-318 ◽  
Author(s):  
M. Zribi ◽  
N. B. Almutairi ◽  
M. Abdel-Rohman
Keyword(s):  
Bridge Deck ◽  
Suspension Bridge ◽  
Lyapunov Theory ◽  
Dynamic Responses ◽  
Suspension Bridges ◽  
Control Force ◽  
Moving Loads ◽  
Hydraulic Actuator ◽  
Long Span ◽  
Suspended Cables

The flexibility and low damping of the long span suspended cables in suspension bridges makes them prone to vibrations due to wind and moving loads which affect the dynamic responses of the suspended cables and the bridge deck. This paper investigates the control of vibrations of a suspension bridge due to a vertical load moving on the bridge deck with a constant speed. A vertical cable between the bridge deck and the suspended cables is used to install a hydraulic actuator able to generate an active control force on the bridge deck. Two control schemes are proposed to generate the control force needed to reduce the vertical vibrations in the suspended cables and in the bridge deck. The proposed controllers, whose design is based on Lyapunov theory, guarantee the asymptotic stability of the system. The MATLAB software is used to simulate the performance of the controlled system. The simulation results indicate that the proposed controllers work well. In addition, the performance of the system with the proposed controllers is compared to the performance of the system controlled with a velocity feedback controller.

Simulation Tool for Assignment Models: SIMASI

2014 ◽  
Vol 13 (8) ◽  
pp. 4723-4728
Author(s):  
Pratiksha Saxena ◽  
Smt. Anjali
Keyword(s):  
Optimization Procedure ◽  
Simulation Tool ◽  
Optimization Strategy ◽  
Performance Measurements ◽  
Integrated Simulation ◽  
Assignment Model ◽  
Classical Models ◽  
Simulation Results ◽  
User Friendly ◽  
Assignment Models

In this paper, an integrated simulation optimization model for the assignment problems is developed. An effective algorithm is developed to evaluate and analyze the back-end stored simulation results. This paper proposes simulation tool SIMASI (Simulation of assignment models) to simulate assignment models. SIMASI is a tool which simulates and computes the results of different assignment models. This tool is programmed in DOT.NET and is based on analytical approach to guide optimization strategy. Objective of this paper is to provide a user friendly simulation tool which gives optimized assignment model results. Simulation is carried out by providing the required values of matrix for resource and destination requirements and result is stored in the database for further comparison and study. Result is obtained in terms of the performance measurements of classical models of assignment system. This simulation tool is interfaced with an optimization procedure based on classical models of assignment system. The simulation results are obtained and analyzed rigorously with the help of numerical examples. 

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