Study on the Load Test of Xiangjiang Cable-Stayed Bridge

2013 ◽  
Vol 361-363 ◽  
pp. 1438-1441
Author(s):  
Yue Long Sun ◽  
Lei Wang
Keyword(s):  
Bearing Capacity ◽  
Mechanical Characteristic ◽  
Dynamic Characteristics ◽  
Working Condition ◽  
Load Test ◽  
Bridge Structure ◽  
Dynamic Tests ◽  
Cable Stayed Bridge ◽  
Actual Working ◽  
Static And Dynamic Tests

Xiangjiang Bridge is a newly built bridge. In order to understand the actual working condition and the bearing capacity of the bridge, the static and dynamic tests are carried out. This paper describes the principles and methods of the load test and the measurement of the stiffness and dynamic characteristics of the bridge structure. Through analyzing the test, the data and information of bridge can be accumulated and the mechanical characteristic of this kind of bridge is discussed.

Study on the Load Test of Old Bridge

2011 ◽  
Vol 250-253 ◽  
pp. 1422-1425
Author(s):  
Ping Zhang ◽  
Lei Wang ◽  
Dong Xiao Li
Keyword(s):  
Bearing Capacity ◽  
Dynamic Characteristics ◽  
Dynamic Load ◽  
Mechanical Characteristics ◽  
Working Condition ◽  
Load Test ◽  
Bridge Structure ◽  
Dynamic Tests ◽  
Load Tests ◽  
Static And Dynamic Tests

It may appear different diseases after years of operation on old bridges. In order to understand the actual working condition and the bearing capacity of the bridge, the static and dynamic tests are taken. It describes the principle and methods for the load test via taking Banlashan Arch Bridge for example in this paper. The stiffness, strength and dynamic characteristics of bridge structure are measured, and the maintenance and reinforcing schemes are proposed, according to the results of static and dynamic load tests. Through analyzing the tests, the data and information of bridge can be accumulated, and the mechanical characteristics of this kind of bridge are discussed.

Study on the Load Test of Ji'an Slab Bridge

2014 ◽  
Vol 501-504 ◽  
pp. 1247-1250
Author(s):  
Ming Li ◽  
Lei Wang ◽  
Zhuang Li ◽  
Danni Wang ◽  
Xing Hang Long ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Working Conditions ◽  
Dynamic Characteristics ◽  
Dynamic Load ◽  
Load Test ◽  
Dynamic Tests ◽  
Actual Working ◽  
Dynamic Load Test ◽  
Static And Dynamic Tests

Ji'an Bridge is a newly built bridge. In order to understand the bearing capacity and actual working conditions of the bridge, the static and dynamic tests were carried out. This paper mainly describe the methods and principles of the load test. Through static and dynamic load test, we can detect and analyze the bridges action of stress, deflection and dynamic characteristics, then evaluate the bearing capacity of the bridge, which can provide reference for other similar bridges.

Study on the Static and Dynamic Load Test of Nicky Bridge

2014 ◽  
Vol 501-504 ◽  
pp. 1194-1198
Author(s):  
Dan Ni Wang ◽  
Lei Wang ◽  
Ming Li ◽  
Yue Long Sun
Keyword(s):  
Dynamic Load ◽  
Working Condition ◽  
Dynamic Structure ◽  
Dynamic Structure Factor ◽  
Load Test ◽  
Dynamic Tests ◽  
Actual Working ◽  
Dynamic Load Test ◽  
Static And Dynamic Tests ◽  
Working Performance

In order to understand the actual working condition and the bearing capacity of the bridge, the static and dynamic tests were carried out. By measuring the stress-strain and deformation of the main control sections of the bridge, we can determine if the design expectations of the structure and its actual working performance were consistent. Through dynamic load test motivating the bridge, we got the dynamic structure factor and vibration characteristics.

Study on the Static and Dynamic Load Test of Continuous Girder Bridge

2013 ◽  
Vol 405-408 ◽  
pp. 1641-1644
Author(s):  
Shi Hua Yu ◽  
Ting Zhang ◽  
Qing Yun Zhao
Keyword(s):  
Bearing Capacity ◽  
Dynamic Load ◽  
Mechanical Characteristics ◽  
Working Condition ◽  
Load Test ◽  
Dynamic Tests ◽  
Dynamic Load Test ◽  
Continuous Girder Bridge ◽  
Static And Dynamic Tests ◽  
Girder Bridge

As we all know that the bridge may appear different diseases after years of operation. The static and dynamic tests are taken to test the actual working condition and the bearing capacity of the bridge. This article describes the principles and methods of the brdige test. We will analyze the tests, the data and information of bridge so that we can accumulate the mechanical characteristics of this bridge.

Inspection and Evaluation of Load-Bearing Capacity of Single Tower Composite Girder Cable-Stayed Bridge

2012 ◽  
Vol 538-541 ◽  
pp. 1785-1788
Author(s):  
Xie Dong Zhang ◽  
Jin Zhi Wang ◽  
Jun Feng Guo
Keyword(s):  
Bearing Capacity ◽  
Dynamic Load ◽  
Static Load ◽  
Load Test ◽  
Bridge Structure ◽  
Static Load Test ◽  
Test Measure ◽  
Cable Stayed Bridge ◽  
Composite Girder ◽  
Dynamic Load Test

In order to evaluate single tower composite girder Cable Bridge actual bearing capacity and working property on design using load, a single-tower composite girder cable-stayed bridge is taken as an example, by means of static load test, dynamic load test, reasonably measures evaluates the single tower composite girder cable-stayed bridge's bearing capacity. The static load test measure static properties of bridge structure (static strain, static deflection, etc.), dynamic load test, measure the dynamic properties of bridge structure (vibration frequency, damping, forced vibration amplitude, impact coefficient, etc.). Results show that the rigidity strength integrity and dynamic characteristics of bridge structure are favorable; the structure’s bearing capacity is favorable.

Bridge Structure Detection Based on Load Test

2013 ◽  
Vol 438-439 ◽  
pp. 891-893
Author(s):  
Yan Zeng ◽  
Yong Zeng
Keyword(s):  
Working Condition ◽  
Load Test ◽  
Normal Operation ◽  
Bridge Structure ◽  
Continuous Beam ◽  
Loading Method ◽  
Structure Detection ◽  
Continuous Beam Bridge ◽  
Calculation Results ◽  
Beam Bridge

By the detection of a three spans continuous beam bridge, the detection loading method and arrangement of measuring points are discussed, the static and dynamic detection results such as the deflection, stress and inherent vibration frequency are comparative analyzed with those of theoretical calculation. Results show that the bridge is safe under actual working condition, which provides the basis for normal operation and maintenance of the bridge.

Axial Force Studies of ESPCP System Based on Triz Theory

2012 ◽  
Vol 152-154 ◽  
pp. 866-871 ◽  
Author(s):  
Wei Xiang Li ◽  
Shi Jie Wang
Keyword(s):  
Bearing Capacity ◽  
Axial Force ◽  
Working Condition ◽  
Matrix Analysis ◽  
System Configuration ◽  
Design Project ◽  
Actual Working ◽  
Submersible Motor

The configuration characteristics and actual working condition of the downhole unit of existing electrical-submersible-motor driven progressing cavity pumping (ESPCP) system are analyzed in detail. Appling the methods and the main tools of Triz theory, conflicting analysis is performed for the axial bearing capacity affecting submersible depth and operational lifespan of downhole unit. The parameters of physical and technical contradictions are standardized. Appropriate principles of invention are selected through contradiction matrix analysis and a more reasonable innovation design project of the ESPCP system configuration is developed. As such, the axial bearing capacity of downhole unit has been effectively improved.

Study on the Static and Dynamic Load Test of Ramp Bridge

2013 ◽  
Vol 361-363 ◽  
pp. 1101-1104
Author(s):  
Qing Yun Zhao ◽  
Lei Wang ◽  
Shi Hua Yu ◽  
Zhi Qiang Lu ◽  
Yue Long Sun
Keyword(s):  
Bearing Capacity ◽  
Dynamic Characteristics ◽  
Dynamic Load ◽  
Mechanical Characteristics ◽  
Load Test ◽  
Live Load ◽  
Girder Bridges ◽  
Dynamic Load Test ◽  
Curved Girder Bridges

Ramp bridges are usually curved girder bridges, and show unique mechanical characteristics under live load. On the basis of an interchange ramp bridge static and dynamic load test in a radius of 230m, the bridges stress, deflection and dynamic characteristics were analyzed and the bearing capacity was evaluated.

Diagnostics of an Existing Cable-Stayed Bridge by Means of the Dynamic Load Test

2015 ◽  
Vol 769 ◽  
pp. 200-205 ◽  
Author(s):  
Michal Polak ◽  
Petr Fajman ◽  
Jiri Maca ◽  
Tomáš Plachý
Keyword(s):  
Dynamic Load ◽  
Dynamic Behaviour ◽  
Load Test ◽  
Diagnostic Methods ◽  
Actual State ◽  
Bridge Structure ◽  
Structural Element ◽  
Cable Stayed Bridge ◽  
Dynamic Load Test ◽  
Bridge Reconstruction

The cable-stayed bridge at the inner ring road in Prague in the Czech Republic was put into operation in 1997. In 2008 a crack was found in the bridge structure area where the end beam was connected with the upper deck of the box section and where the bridge expansion joint system was anchored. The basic objective of diagnostic works, which were started immediately after the finding of the crack, was obtaining the basis for bridge structure modifications, among other things, to prevent formation of similar damages in the future. A series of diagnostic methods was used for determination of the bridge actual state and the real static and dynamic bridge behavior. One of these methods was the dynamic load test. It was focused on an examination of the bridge forced vibration which was caused by dynamic effects of a usual traffic flow. An arrangement of the test was not quite usual because the experiment was concentrated on dynamic behaviour of bridge support areas especially. The abutment area, the pylon area and the area of a pillar with the bearing with a tensile structural element were observed on the investigated bridge. The dynamic load test was performed in two stages. The first stage was focused on investigation of bridge dynamic behaviour in original structural conditions and on obtaining the basis for design of bridge adjustments. The second stage was realized after bridge reconstruction in December 2012 and verified the effectiveness of bridge modifications.

scholarly journals Dynamic Characteristics of a Double-Pylon Cable-Stayed Bridge with Steel Truss Girder and Single-Cable Plane

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Yong Zeng ◽  
Yutong Zeng ◽  
Hao Yu ◽  
Yujie Tan ◽  
Hongmei Tan ◽  
...  
Keyword(s):  
Dynamic Characteristics ◽  
Structural Parameters ◽  
Load Test ◽  
Torsional Stiffness ◽  
Seismic Stability ◽  
Dead Load ◽  
Cable Stayed Bridge ◽  
Subspace Iteration ◽  
Steel Truss ◽  
Steel Truss Girder

The dynamic characteristics are closely linked to the seismic stability and wind-resistant of the bridge. But different bridge types have different dynamic characteristics. In order to study the dynamic characteristics of a double-pylon cable-stayed bridge with a single-cable plane and steel truss girder whose main span is the longest in the world, the dynamic load test was done, and the finite element and the subspace iteration methods were used to analyze the vibration mode of the bridge. The influence of different structural parameters on the dynamic characteristics of the bridge was analyzed. The changed structural parameters are cable layout, stiffness of steel truss girder, stiffness of stayed cables, stiffness of pylons, the concentration of dead load, number and location of auxiliary piers, and structural system. The results show that the bending and torsion resistance of the double-pylon cable-stayed bridge with a single-cable plane and steel truss girder is weak. The torsional stiffness of the cable-stayed bridge with a double-cable plane is stronger than that of the cable-stayed bridge with a single-cable plane. The seismic stability and wind-resistant of the bridge can be improved by using light dead load, improving the stiffness of pylon and girder, and adding auxiliary piers scientifically. However, the change of cable stiffness has a complex influence on the dynamic characteristics of the bridge. The conclusion can offer references for the construction, maintenance, and design of the same type of bridges.

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