Dynamic Load Test and Data Analysis of Tiansheng Bridge

2014 ◽  
Vol 638-640 ◽  
pp. 1103-1106
Author(s):  
Hai Xia Ao ◽  
Yue Zhang ◽  
Yu Ping Yue
Keyword(s):  
Bearing Capacity ◽  
Moving Load ◽  
Strain Analysis ◽  
Time History ◽  
Load Level ◽  
Load Test ◽  
Dynamic Strain ◽  
Dynamic Load Test ◽  
Control Section ◽  
Road Grade

This test took dynamic strain detection method depending on time history curve of the dynamic deflection or the dynamic strain analysis of moving load in the control section to obtain impact factor. Using the method of environmental random vibration testing tested vibration response signals of L / 4 section of bridge test span , the cross section and 3 L / 4 section to identify the dynamic characteristics parameters of the overall vibration of Bridge, so that to determine current situation of application , assess the carrying capacity of bridge and test design load bearing capacity. According to the results of load test,the bearing capacity of Tiansheng bridge meets the requirements of "road - grade I" load level.

scholarly journals Research on the evaluation method of bearing capacity of existing Bridges based on dynamic load test

2021 ◽  
Vol 233 ◽  
pp. 03020
Author(s):  
Qingcheng Yang ◽  
Yufeng Ning ◽  
Weiwei Sun ◽  
Shunchao Cheng
Keyword(s):  
Bearing Capacity ◽  
Dynamic Load ◽  
Prestressed Concrete ◽  
Evaluation Method ◽  
Load Level ◽  
Load Test ◽  
Dynamic Strain ◽  
Rigid Frame ◽  
Dynamic Load Test ◽  
Impact Coefficient

The author carried out dynamic load test research on a prestressed concrete rigid frame bridge. Under dynamic load, the ratios of the measured and theoretical frequencies of the first four vertical vibrations of the bridge were 1.081, 1.153 respectively. The corresponding measured damping ratios are 0.011, 0.010 respectively. The maximum dynamic coefficient of bridge sports car test is 1.049, and the corresponding dynamic strain increment coefficient is 0.059. The measured impact coefficient is between 0.012 and 0.049, which is basically equivalent to the design impact coefficient of 0.05.The test results show that the existing bridge works well under the test load, and the bearing capacity of the structure meets the requirements of the design load level.

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.

Static and Dynamic Test Detection of Steel Tube Truss Arch Bridge

2012 ◽  
Vol 178-181 ◽  
pp. 2513-2520
Author(s):  
Xiao Li Li ◽  
Zong Guang Sun ◽  
Ying Fang Fan
Keyword(s):  
Natural Frequency ◽  
Dynamic Load ◽  
Dynamic Test ◽  
Steel Tube ◽  
Load Test ◽  
Measuring Point ◽  
Test Load ◽  
Dynamic Load Test ◽  
Impact Coefficient ◽  
Control Section

Static and dynamic test of 85m span half-through steel tube concrete truss arch were in. Follow contents were determined in the static test:control section deflection of steel tube concrete arch rib under test load;deck control section deflection and strain measuring in test load;deflection and strain measuring of suspender beam;strain test of suspender;crack observation of beam in loading. The deflection and strain measuring point of deck control section were on the beam. The content of dynamic load test :the measuring of impact coefficient、natural frequency and cable tension by frequency methods. Finally, operational situation of bridge was estimated.

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.

A new approach to the analysis of high-strain dynamic pile test data

1994 ◽  
Vol 31 (2) ◽  
pp. 246-253 ◽  
Author(s):  
Yves Robert
Keyword(s):  
Artificial Intelligence ◽  
Computer Program ◽  
Bearing Capacity ◽  
High Strain ◽  
Dynamic Test ◽  
Load Test ◽  
Case Method ◽  
Static Load Test ◽  
Pile Capacity ◽  
Dynamic Load Test

High-strain dynamic pile tests using the pile driving analyzer (PDA) and the Case method have been available in Canada for over 15 years. During that period of time, the hardware has evolved considerably but the way the data is interpreted has basically remained the same. The evaluation of the bearing capacity of the tested pile still uses the Case method, with the Case J factor being calculated either from the results of a static load test or, more often, from the results of one or more CAPWAP (Case pile wave analysis program) analyses. A computer program has been developed to estimate the bearing capacity of piles using the dynamic test results produced by the PDA. This program uses direct correlations between PDA data and CAPWAP results. It also includes an artificial intelligence module trained to predict CAPWAP pile capacity. It is not designed to replace the CAPWAP program, but rather to indicate when an additional CAPWAP analysis might be required. Key words : dynamic load test, computer program, artificial intelligence, CAPWAP, Case method.

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.

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.

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