Evaluation of bearing capacity of reinforced concrete box ribbed arch bridge based on dynamic load test

Dynamic load test is to measure the natural vibration characteristics of the bridge structure or the forced vibration characteristics under dynamic load, and to evaluate the driving performance, driving safety and comfort of the bridge through dynamic load test. In order to evaluate the stress state and working performance of a reinforced concrete box-ribbed arch bridge, the load test of the bridge is carried out. Dynamic load test is used to test the inherent fundamental frequency, damping ratio and impact coefficient of the bridge through pulsation test and sports car test. Through the experiment with the key parts of the stress (strain) and displacement load and other important data, through analysis and study, the comprehensive analysis of the phenomenon of calculation and test, a comprehensive performance evaluation structure and function whether meet the design requirements, to provide technical basis for the safety of the bridge operation, and provide the original material for the bridge maintenance and management in the future.

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Investigation of Dynamic Load Test of an Existed Reinforced Concrete Rigid-Frame Arch Bridge

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.178-181.2121 ◽

2012 ◽

Vol 178-181 ◽

pp. 2121-2124

Author(s):

Tian Liang ◽

Jun Dong ◽

Liang Liang Yang ◽

Dong Hai Yan

Keyword(s):

Reinforced Concrete ◽

Dynamic Load ◽

Fem Analysis ◽

Load Test ◽

Dynamic Responses ◽

Arch Bridge ◽

Rigid Frame ◽

Dynamic Load Test ◽

Impact Coefficient ◽

Reconstruction Project

For an existed reinforced concrete rigid-frame arch bridge in reconstruction project, reinforcement effects of the bridge are studied and discussed while the original load grades are maintaining and it is based on dynamic load test including scheme, execution and FEM analysis in this paper. In our investigations, such characteristics as dynamic flexibility, impact coefficient, natural vibrations and dynamic responses are analyzed. All the investigations show that the bridge meets the original-designed-loading requirement, which behaves well in dynamic characteristics after being strengthened and whose stiffness also satisfies requirement.

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Evaluation of bearing capacity of reinforced concrete box ribbed arch bridge based on static load test

E3S Web of Conferences ◽

10.1051/e3sconf/202123301024 ◽

2021 ◽

Vol 233 ◽

pp. 01024

Author(s):

Mao He ◽

Xin Fu ◽

Shunchao Chen

Keyword(s):

Reinforced Concrete ◽

Static Load ◽

Load Test ◽

Original Material ◽

Static Load Test ◽

Arch Bridge ◽

Bridge Maintenance ◽

Partial Load ◽

And Function ◽

Technical Basis

In order to evaluate the stress and working performance of a reinforced concrete box-ribbed arch bridge after completion, the load test of the bridge is carried out. Static load test is to test the stress and displacement of each section of arch rib under the action of partial load and medium load. Through the experiment with the key parts of the stress (strain) and displacement load and other important data, through analysis and study, the comprehensive analysis of the phenomenon of calculation and test, a comprehensive performance evaluation structure and function whether meet the design requirements, to provide technical basis for the safety of the bridge operation, and provide the original material for the bridge maintenance and management in the future.

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Reinforced Grouting Material Member Force Performance Research

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.578-579.1262 ◽

2014 ◽

Vol 578-579 ◽

pp. 1262-1265

Author(s):

Xi Guang Cui ◽

Sheng Liang Zhao ◽

Wei Yang ◽

Xu Yang Tong ◽

Jie Geng

Keyword(s):

Reinforced Concrete ◽

Dynamic Load ◽

Load Test ◽

Deformation Condition ◽

Grouting Material ◽

Reinforced Concrete Member ◽

Dynamic Load Test ◽

Stress And Deformation ◽

Reversed Cyclic ◽

Performance Research

This paper made the same size of reinforced grouting material vertical bending cantilever beam and reinforced concrete ones, respectively for the same static and dynamic load test, the static load for drab one-time loading level, dynamic load as low reversed cyclic loading, observe their cracking and deformation condition, draw the response relationship between the load and displacement hysteresis curves, skeleton curves, Test and data results show that the stress and deformation of the reinforced grouting material member is close to or even better a reinforced concrete member, so it is reliable to replace concrete with grouting material.

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Static and Dynamic Experiment of the Behavior of the Constructed Hanjiang Super-Major Railway Bridge in Laohekou

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.255-260.1230 ◽

2011 ◽

Vol 255-260 ◽

pp. 1230-1235 ◽

Cited By ~ 1

Author(s):

Zhi Wei Qi ◽

Shu Jun Fang ◽

Guan Dong Lin ◽

Hua Wang

Keyword(s):

Dynamic Load ◽

Working Condition ◽

Damping Ratio ◽

Load Test ◽

Experimental Results ◽

Natural Vibration Frequency ◽

Railway Bridge ◽

Static Load Test ◽

Vibration Displacement ◽

Dynamic Load Test

A static and dynamic load test is carried out on the constructed Hanjiang Super-major Railway Bridge in Laohekou to ensure the reliability of the bridge and test the carrying capacity and working condition of the bridge structure. The static load test is divided into three kinds of loading conditions, each of which tests the stress and deflection of the key sections of the bridge. The transverse vibration displacement of the piers and mid-span section is measured in the dynamic load test when the train is crossing the bridge at different speeds, and the vertical dynamic deflection of the mid-span section is also tested. The natural vibration frequency, the vibration types and the damping ratio of the whole bridge are measured in the pulsating experiment. Through the comparative analysis of the experimental results and the theoretical calculation results and standard, it can be concluded that the strength, the vertical and lateral stiffness of the bridge meet the requirements of both the design and specifications, and that the bridge is in a good working condition. The test and the analysis of the experimental results of the bridge can serve as a reference to the bridges of the same type.

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Dynamic load test and load lateral distribution of box girder bridge in mining area under special load

E3S Web of Conferences ◽

10.1051/e3sconf/201913604064 ◽

2019 ◽

Vol 136 ◽

pp. 04064

Author(s):

Shengtao Yuan ◽

Weilong Zheng ◽

Shunchao Chen ◽

Chuanwen Hu ◽

Wenbo Luo ◽

...

Keyword(s):

Dynamic Load ◽

Damping Ratio ◽

Mining Area ◽

Lateral Distribution ◽

Load Test ◽

Natural Vibration Frequency ◽

Box Girder ◽

Dynamic Load Test ◽

Impact Coefficient ◽

Girder Bridge

Dynamic load test of bridge is one of the important indexes to evaluate bridge operation and bearing capacity, however, the test of the lateral distribution of bridge is one of the important means to evaluate the state of bridge. In order to evaluate the stress condition and working performance of a box girder bridge in a mining area under the special load of 100T, dynamic load test and lateral load distribution are studied, dynamic load test is to test the natural vibration frequency damping ratio and impact coefficient of the bridge through pulsating test and traffic running test, the transverse distribution of load is analyzed by deflection method and the experimental value of transverse distribution coefficient is compared with the theoretical value of girder method. The results show that under dynamic load, the first vertical natural vibration frequency of the bridge is 10.986, the damping ratio is 0.015%, and the impact coefficient is 1.07~1.26, the vertical measured fundamental frequency is larger than the calculated fundamental frequency, and the overall stiffness of the bridge meets with the design specification; the transverse connection among the box girders is close and the lateral distribution of load meets with the requirement of the design specification.

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