Single Beam Load Test of Continuous Beam

2014 ◽  
Vol 578-579 ◽  
pp. 801-804
Author(s):  
Ya Xun Yang ◽  
Wei Ya Fan
Keyword(s):  
Prestressed Concrete ◽  
Static Load ◽  
Load Test ◽  
Static Load Test ◽  
Box Girder ◽  
Single Beam ◽  
Control Section ◽  
Design Requirements ◽  
Girder Bridge ◽  
Actual Control

GengYuHe bridge was a prestressed concrete continuous box girder bridge,based on the static load test of single beam bridges compared with theoretical calculation value,check whether the actual control section stress of the bridge are in conformity with the design requirements,and give advice.

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.

Bridge Structure Performance Evaluation Based on Dynamic Load Test

2012 ◽  
Vol 238 ◽  
pp. 694-696 ◽  
Author(s):  
Yan Zeng
Keyword(s):  
Prestressed Concrete ◽  
Static Load ◽  
Load Test ◽  
Bridge Structure ◽  
Static Load Test ◽  
Box Girder ◽  
Dynamic Load Test ◽  
Actual Service ◽  
Calculation Results ◽  
Service State

Static load test was carried out on Hengshui interchange ramp bridge of Lin-Chang expressway. The superstructure of the bridge is cast-in-place prestressed concrete continuous box-girder. The actual service state of the bridge is analyzed by the comparison of experimental and calculation results. The study provides the initial technical files and the basis of acceptance, operation, maintenance and management for the 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.

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.

The Modification to the FEM Model of the Prestressed Concrete Beam with the Combination of the Data of Static and Dynamic Test

2014 ◽  
Vol 707 ◽  
pp. 401-405
Author(s):  
Tao He ◽  
Chong Ji Zhao
Keyword(s):  
Prestressed Concrete ◽  
Static Load ◽  
Dynamic Test ◽  
Load Test ◽  
State Variables ◽  
Static Load Test ◽  
Fem Model ◽  
Modified Model ◽  
Finite Element Software ◽  
T Beam

Using the finite element software ANSYS to establish the model of prestressed concrete T beam .With the combination of dynamic and static load test data, the objective function was constructed by taking the vertical deflection of the static load test and the top five vertical natural frequency of dynamic test as state variables. The results revealed that,after being modified ,the error between the calculation value and the testal results of the model was converged in a reasonable error range.In addition ,The modified model could be used in the assessment of bridge structure performance,and it shows the practical application value.

Field Damage Inspection and Static Load Test Analysis of Jiamusi Highway Prestressed Concrete Bridge in China

2010 ◽  
Vol 163-167 ◽  
pp. 1147-1156 ◽  
Author(s):  
Ali Fadhil Naser ◽  
Zong Lin Wang
Keyword(s):  
Prestressed Concrete ◽  
Steel Reinforcement ◽  
Load Test ◽  
Concrete Bridge ◽  
Bridge Structure ◽  
Static Load Test ◽  
Box Girder ◽  
Good State ◽  
Prestressed Concrete Bridge ◽  
Corrosion Of Steel

The main purpose of damage inspection of the bridge components is to ensure the safety of a bridge and to identify any maintenance, repair, or strengthening which that need to be carried out. The essential damages that occur in reinforced concrete bridge include different type of cracks, scalling and spalling of concrete, corrosion of steel reinforcement, deformation, excessive deflection, and stain. The main objectives of this study are to inspect the appearance of Jiamusi highway prestressed concrete bridge and describe all the damages in the bridge structural components, and to evaluate the structural performance of the bridge structure under dead and live loads. The field tests that are adopted in this study are the depth of concrete carbonation test, compressive strength of concrete test, corrosion of steel reinforcement test, and static load test. According to inspection of the bridge structure appearance, the overall states of bridge structure in good and there are not serious damages, but there are diagonal and longitudinal cracks in the inside web of box girder within block No.8 and 9. Expansion joints suffer from serious damage such as deformation of expansion joint rubber, dislocating, shedding, and cracking. The field test results show that the concrete of the bridge structure has not carbonation; the strength of concrete in good state; there is not corrosion in steel reinforcement; The values of load test for vertical deflection, strain, and stress are less than the theoretical values and the results of cracks observation show that there is not changing in the length of diagonal cracks in the web of box girder when the load test is applied. This indicates that the working state and carrying capacity of the bridge structure in good state.

Experimental Static Load Test of Prestressed Concrete Slab-on-Ground Model

2017 ◽  
Vol 865 ◽  
pp. 320-324
Author(s):  
Petr Mynarcik ◽  
Jiri Koktan
Keyword(s):  
Prestressed Concrete ◽  
Static Load ◽  
Flood Hazard ◽  
Concrete Slab ◽  
Load Test ◽  
Concrete Column ◽  
Static Load Test ◽  
Model Situation ◽  
Research Activities ◽  
Series Of Experiments

This experimental static load test is part of research activities scoped on problematics with involved foundation conditions. Especially for areas with influence of undermining or flood hazard. Concept of experiment was designed like a model situation of interaction between concrete column, concrete slab-on-ground and subsoil. During static load process were measured deformations, tensions inside the experimental model and geotechnical values on contact surface of concrete slab-on-ground and subsoil. These data were processed and presented in this article. The described experimental static load test is part of a series of experiments focusing on the problematics of concrete constructions in interaction with subsoil and was realized at the Faculty of Civil Engineering, VŠB –Technical University of Ostrava.

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