scholarly journals Analysis of load test on composite I-girder bridge

2017 ◽  
Vol 7 (2) ◽  
pp. 163-173 ◽  
Author(s):  
F. Huseynov ◽  
J. M. W. Brownjohn ◽  
E. J. O’Brien ◽  
D. Hester
Keyword(s):  
Load Test ◽  
Girder Bridge

Study on Crack Causes and Strengthening Measures of Large Span PC Continuous Box Girder Bridges

2010 ◽  
Vol 163-167 ◽  
pp. 3551-3554
Author(s):  
Wei Peng ◽  
Zhi Xiang Zha
Keyword(s):  
Prestressed Concrete ◽  
Load Test ◽  
Box Girder Bridges ◽  
Element Analysis ◽  
Box Girder ◽  
Girder Bridges ◽  
Long Span ◽  
Concrete Box Girder Bridges ◽  
Girder Bridge ◽  
Engineering Projects

This template Based on cracks observation and finite element analysis of real engineering projects as well as bridge load test after reinforcement, causes and types of cracks in prestressed concrete box girder bridges and treating measurements are systematically studied. The results obtained from the calculation are presented to demonstrate the effect of sensitive factors, such as arrangement of longitudinal prestressed tendons, the magnitude of vertical prestressed force, temperature gradient, etc. The results show that the arrangement of longitudinal prestressed tendons and the magnitude of vertical prestressed force take key roles in cracks control of box girder webs. Lots of treating measurements are presented in accordance with different types of cracks, some of them are applied to a reinforcement engineering of a long span pretressed concrete continuous box girder bridge with cracks. Load test after reinforcement of the bridge demonstrates the reasonability of the treating measurements. Several design recommendations and construction measures about reinforcements and some sensitive factors mentioned above are proposed to control cracks.

Ultimate Load Test of Slab‐on‐Girder Bridge

1992 ◽  
Vol 118 (6) ◽  
pp. 1608-1624 ◽  
Author(s):  
Baidar Bakht ◽  
Leslie G. Jaeger
Keyword(s):  
Ultimate Load ◽  
Load Test ◽  
Girder Bridge

Load Test Analysis of Long-Span Prestressed Concrete Continuous Beam Bridge

2014 ◽  
Vol 1030-1032 ◽  
pp. 798-801
Author(s):  
Hua Su
Keyword(s):  
Bearing Capacity ◽  
Prestressed Concrete ◽  
Highway Bridges ◽  
Load Test ◽  
Beam Model ◽  
Test Analysis ◽  
Single Beam ◽  
Long Span ◽  
Continuous Beam Bridge ◽  
Girder Bridge

This paper takes a 45+60+45m prestressed concrete continuous box Girder Bridge as background, based on “Specification for Inspection and Evaluation of Load-bearing Capacity of Highway Bridges” (JTG/T J21-2011), single beam model and solid model are built for schematic design of load test. Compare the measured value and the theoretical value, and evaluate the bridge bearing capacity, finally provide technical base for project checking and accepting.

Experiment Study on Mechanical Characteristics Box Girder Bridge Considering Deck Pavement

2011 ◽  
Vol 90-93 ◽  
pp. 1216-1219
Author(s):  
Yan Zeng ◽  
Guang Bin Zhang ◽  
Zhi Yong Wang
Keyword(s):  
Bearing Capacity ◽  
Work Performance ◽  
Mechanical Characteristics ◽  
Load Test ◽  
Experiment Study ◽  
Box Girder ◽  
Bonding Performance ◽  
Girder Bridge ◽  
Test Result ◽  
Actual Stress

In order to understand the mechanical characteristics of shenqiu Zhidian Bridge considering the influence of pavement, On the basis of installing steel mesh in rigid bridge or consecution to enhance the bonding performance between the pavement and girder, the load test is conducted. According to the test result and the calculations result the bearing capacity and work performance of bridge are evaluated. The results show that in the design of bridge, by enhancing the bonding performance between the pavement and girder, considering the overlaid pavement participating in force corresponds with the actual stress structure.

scholarly journals STUDY ON SPATIAL STRESS EFFECT OF PC CONTINUOUS THIN-WALLED BOX GIRDER BRIDGE

2021 ◽  
Vol 30 (3) ◽  
Author(s):  
Honglei Zhang
Keyword(s):  
Finite Element ◽  
Load Test ◽  
Bottom Plate ◽  
Stress Effect ◽  
Shear Lag ◽  
Element Analysis ◽  
Box Girder ◽  
Lag Effect ◽  
Girder Bridge ◽  
Spatial Stress

In order to study the influence of spatial stress effect and shear lag effect on the cracking of PC continuous thin-walled box girder bridge, a spatial model was established by using ANSYS finite element software to analyze the internal stress distribution of the bridge. The test results are compared with the analysis results of spatial model and plane link system model through the load test of real bridge. The results show that the longitudinal stress is evenly distributed along the width direction, which means that the spatial stress effect and the shear lag effect have little influence on the downdeflection of the bridge. The shear lag coefficient at the longitudinal axis of midspan bottom plate and the intersection of bottom plate and web are larger than other positions, which is most likely to produce cracks caused by stress concentration, and should be strengthened here in practical engineering. The results of load test show that the results of spatial finite element analysis are more reliable than those of plane link system calculation, and the design and construction based on the results of spatial finite element analysis is safer.

Experimental Study on Three-Span Continuous Wide Curved Box Girder Bridge Model

2014 ◽  
Vol 638-640 ◽  
pp. 937-941
Author(s):  
Jie Jun Wang ◽  
Peng Tan ◽  
Jiang Ya Yuan ◽  
Hai Qing Yuan ◽  
Gui Ming Zhang
Keyword(s):  
Cross Sections ◽  
Load Test ◽  
Element Analysis ◽  
Box Girder ◽  
Uniformity Coefficient ◽  
Bridge Model ◽  
The Finite Element Analysis ◽  
Practical Engineering ◽  
Scale Ratio ◽  
Girder Bridge

This paper simulates the practical engineering, using plexiglass to make a three-span continuous wide curved box girder model by the geometry scale ratio 1:30. With the model load test, measured the strain and deflection of the control cross-sections, got the distribution about the stress and deflection of the wide curved continuous box girder; And we proposed the “uniformity coefficient” to express the uneven force of the curved bridge. Compared the finite element analysis results and experimental data, the results show both are in good agreement.

scholarly journals Analysis and study on static load test of box girder bridge in mining area under special load

2019 ◽  
Vol 136 ◽  
pp. 04063
Author(s):  
Shengtao Yuan ◽  
Weilong Zheng ◽  
Shunchao Chen ◽  
Chuanwen Hu ◽  
Wenbo Luo ◽  
...  
Keyword(s):  
Static Load ◽  
Mining Area ◽  
Operating Conditions ◽  
Load Test ◽  
Main Beam ◽  
Static Load Test ◽  
Box Girder ◽  
Working Performance ◽  
Box Girder Bridge ◽  
Girder 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, through static load test, the mechanical properties of the bridge under operating conditions were analyzed and studied. Static load test is the stress test of the main beam under the partial and medium load, finally, the measured results are compared with the finite element result. The results show that under the action of various loads, the check coefficient of the bridge strain and the main tensile strain check coefficient was not exceed the standard allowable value 1, the actual working performance of the structure is very good, the maximum relative residual strain was 8.33%, which are not 20% higher than the standard allowable value, the whole bridge is in the elastic deformation stage, meet with the normal use requirements.

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

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.

Diagnostic Load Test of Continuous Prestressed Box Girder Bridge

2013 ◽  
Vol 101 (1) ◽  
pp. 1-8
Author(s):  
Sayan Sirimontree ◽  
Kridayuth Chompooming ◽  
Wacharapong Prasarnklieo
Keyword(s):  
Load Test ◽  
Box Girder ◽  
Box Girder Bridge ◽  
Girder Bridge
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