scholarly journals Influence Of Overload On Transverse Distribution Of T-beam Bridge

2020 ◽  
Vol 580 ◽  
pp. 012060
Author(s):  
Wei Qiang Du ◽  
Li Tao
Keyword(s):  
Transverse Distribution ◽  
Beam Bridge ◽  
T Beam

The Study of Diaphragm Beam Influence to Load Transverse Distribution of T-Beam Bridge

2011 ◽  
Vol 368-373 ◽  
pp. 557-562
Author(s):  
Guo Hui Gao ◽  
Zhen Yu Xie ◽  
Ran He ◽  
Jian Yi Song
Keyword(s):  
Theoretical Data ◽  
Mechanical Analysis ◽  
Concentrated Load ◽  
Transverse Distribution ◽  
Finite Element Software ◽  
Bridge Model ◽  
Diaphragm Beam ◽  
Beam Bridge ◽  
Bridge Models ◽  
T Beam

Diaphragm beam has grate influence to load transverse distribution factors of T-beam bridge. Two steel T-beam bridge models were made in this article, one have diaphragm beam and the other one have not. Concentrated load was applied to both of them, and mechanical analysis of the T-beam bridge model was carried out by finite element software. Compared with experiment data and theoretical data, it shows that: when the concentrated load was applied to mid-span of 1#,2# and 3# beam of the two kind bridges, the 1#,2# and 3# beam load transverse distribution factors of T-beam bridge without diaphragm beam is larger than that of T-beam bridge with diaphragm beam by 19.3%~23.2%、25.3%~30.6% and 48.1%~50.1% respectively.

The Natural Frequency Calculation Method of Simply-Supported Beam in the Sunshine Temperature Field

2013 ◽  
Vol 394 ◽  
pp. 364-367
Author(s):  
Yong Chun Cheng ◽  
Yu Ping Shi ◽  
Guo Jin Tan
Keyword(s):  
Temperature Field ◽  
Calculation Method ◽  
Natural Frequencies ◽  
Bernoulli Model ◽  
Simply Supported Beam ◽  
Simply Supported ◽  
Frequency Calculation ◽  
Natural Frequency Calculation ◽  
Beam Bridge ◽  
T Beam

The related researches show that , the sunshine temperature field can cause the changes of the natural frequencies of the simply-supported beam. In order to recover the influence law of the temperature field on the natural frequencies, the calculation method of the natural frequencies of the simply-supported beam bridge is formed. First, according to the principles of stress equivalence, transform the sunshine temperature field to the partiality axis forces. Based on the Bernoulli model, the calculation method of the natural frequencies of the simply-supported beam under the partiality axis forces at both ends is formed. At last, take one simply-supported T beam as the object of numerical modeling and verify the validity and the reliability of this method.

Calculation methods of bridge deck for prestressed short rib T-beam bridges

2020 ◽  
pp. 1-13
Author(s):  
Sijia Wang ◽  
Tianlai Yu
Keyword(s):  
Finite Element ◽  
Bridge Deck ◽  
Mechanical Performance ◽  
Test Results ◽  
Analysis Method ◽  
Slab Method ◽  
Element Analysis ◽  
Calculation Results ◽  
Beam Bridge ◽  
T Beam

Because of the low height of the prestressed short rib T-beam bridge and the poor torsion resistance of the main beam, the positive moment in the middle span of the bridge deck will increase correspondingly compared with the normal rib beam bridge. At present, there is little research on the calculation method of the bridge deck of the prestressed short rib T-beam bridge. In this paper, the space finite element method and the continuous one-way slab method are used to calculate the forces on the bridge deck, based on the space finite element method, a finite element elastic supported continuous beam method is proposed to calculate the forces on the bridge deck. By comparing the calculation results of the three methods with the test results, the reasonable calculation method of the bridge deck is studied. The results show that the spatial finite element analysis method can simulate the mechanical performance of the deck of the bridge of the prestressed short rib T-beam bridge well, the stress calculation results are consistent with the test results, and the calculation accuracy is high, which can be used in the actual engineering design; The finite element analysis method of elastic support continuous beam can also simulate the mechanical performance of the deck of the bridge of the prestressed short rib T-beam bridge. The concept of the method is clear, the calculation is convenient, and it is more suitable for the application of engineering design; The calculation results of the continuous one-way slab method are too large to be safe for design.

scholarly journals Research on Reinforcement Design Based on a T-beam Bridge

2018 ◽  
Vol 199 ◽  
pp. 032039
Author(s):  
Jingxian Shi ◽  
Jiahong Duan ◽  
Yingjie Cheng
Keyword(s):  
Reinforcement Design ◽  
Beam Bridge ◽  
T Beam

Damage Identification of T-Beam Bridge Based on Distributed Long-Gauge Strain Mode Theory

2014 ◽  
Vol 501-504 ◽  
pp. 1352-1358
Author(s):  
Bi Tao Wu ◽  
Gang Wu ◽  
Cai Qian Yang
Keyword(s):  
Reinforced Concrete ◽  
Strain Amplitude ◽  
Health Monitoring ◽  
Damage Identification ◽  
Amplitude Variation ◽  
Strain Mode ◽  
Mode Theory ◽  
Sensor Arrangement ◽  
Beam Bridge ◽  
T Beam

Damage identification of a T-beam bridge which contains five T-beams is conducted based on distributed long - gauge strain mode theory, considering the damage and aging problems of widely used simple-supported reinforced concrete T-beam bridges. Assuming that the damage occurs in the different T-beams, the normalized strain mode is used to identify the damage. The sensitivity of the normalized strain mode of each T-beam and change rule of strain mode curve is studied at the same time. It is effective to apply modal strain amplitude variation degree to detect damages. If sensors are arranged reasonablely, a good damage identification can be obtained by utilizing distributed long-gauge strain mode theory even if the damage is slight.Some suggestions are given for the sensor arrangement and health monitoring of this kind of bridge when using the distributed long-gauge strain mode theory at last.

scholarly journals Nonlinear Mechanics Study of Concrete T-beam Bridge With Cracking Damage Based on Numerical Simulation

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Numerical Simulation ◽  
Constitutive Relationship ◽  
Plastic State ◽  
Nonlinear Mechanics ◽  
Element Analysis ◽  
Structural Rigidity ◽  
Beam Bridge ◽  
Relationship Of ◽  
T Beam ◽  
Selection Of

The cracking damage of concrete bridge will seriously affect the overall safety of a structure. In this study, based on the numerical simulation, finite element analysis was carried out on the concrete T beam through the ANSYS software, and the selection of elements and the constitutive relationship of materials in the numerical simulation were introduced. It was found from the results of numerical simulation that the cracks of T beam continued to develop under the action of load, the concrete entered the plastic state from the elastic state and the mid-span deflection increased with the increase of load. In the case of the change of cracks, the larger the crack height, the larger the crack range of the beam. With the increase of load, the structural rigidity continued to degenerate, and the compressive stress of the concrete also increased. The research in this paper proves the validity of numerical simulation in the study of nonlinear mechanics of beam bridge and also makes some contributions to the study of crack damage of beam bridge.

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