Vehicle Parameters Influence on Vertical Load-Carrying Natural Frequency of Railway Double-Track Steel Truss Continuous Bridge

2012 ◽  
Vol 446-449 ◽  
pp. 2613-2616
Author(s):  
Jian Ying Ren ◽  
Mu Biao Su ◽  
Wen Ping Li
Keyword(s):  
Natural Frequency ◽  
Vertical Load ◽  
Load Carrying ◽  
Steel Truss ◽  
Double Track

Vertical Load-Carrying Natural Frequency of Railway Double-Track Steel Truss Continuous Bridge

2011 ◽  
Vol 243-249 ◽  
pp. 1968-1971
Author(s):  
Jian Ying Ren ◽  
Wen Ping Li ◽  
Mu Biao Su
Keyword(s):  
Natural Frequency ◽  
High Speed ◽  
Maximum Deviation ◽  
Vertical Load ◽  
Average Value ◽  
Steel Truss Bridge ◽  
Load Carrying ◽  
Steel Truss ◽  
Truss Bridge ◽  
Double Track

The railway double-track continuous bridge vertical load-carrying frequency is theoretical derived with the vehicle-bridge system mode1. The vertical load-carrying frequencies of the3×64 m through stud welding railway steel truss bridge are calculated, when two trains with 20 same high-speed passenger vehicles are traveling on the bridge from both ends. The change regularity of this double-track continuous bridge vertical load-carrying natural frequency with two trains on it is similar with the single-track simply supported bridge and this bridge vertical load-carrying natural frequency only one train on it. This bridge vertical load-carrying frequency when two train on it is smaller than that only train on it. The maximum deviation percentage between the vertical load-carrying natural frequency and the vertical natural frequency is 6.0452%. The vertical load-carrying frequency can be replaced by the average value.

Vehicle Parameters Influence on Vertical Load-Carrying Natural Frequency of Railway Double-Track Steel Truss Continuous Bridge

2012 ◽  
Vol 446-449 ◽  
pp. 2613-2616
Author(s):  
Jian Ying Ren ◽  
Mu Biao Su ◽  
Wen Ping Li
Keyword(s):  
Natural Frequency ◽  
High Speed ◽  
Vertical Load ◽  
Suspension Spring ◽  
Steel Truss Bridge ◽  
Load Carrying ◽  
Steel Truss ◽  
Truss Bridge ◽  
Double Track ◽  
Bridge System

The railway double-track continuous bridge vertical load-carrying frequency is calculated with the vehicle-bridge system mode1. When two lines with 20 same high-speed passenger vehicles are traveling on the 3×64 m through stud welding railway steel truss bridge from both ends, it is analyzed that the vehicle parameters how to influence the bridge vertical load-carrying frequency. The bridge vertical load-carrying frequency is influenced by the unsprung mass of each wheel-set of the vehicle, the suspension spring stiffness, the vehicle length and the mass of the vehicle. But it is independent of the speed of the train．It is shown that the bridge vertical load-carrying frequency is the vehicle-bridge system natural frequency, it is only depend on its natural parameters.

Vehicle Parameters Influence on Railway Double-Track Pre-Stressed Concrete Continuous Bridge Vertical Load-Carrying Natural Frequency

2012 ◽  
Vol 446-449 ◽  
pp. 2544-2547
Author(s):  
Jiang Ying Ren ◽  
Mu Biao Su ◽  
Wen Ping Li
Keyword(s):  
Natural Frequency ◽  
High Speed ◽  
Vertical Load ◽  
Suspension Spring ◽  
Passenger Vehicles ◽  
Load Carrying ◽  
Train Speed ◽  
Girder Bridge ◽  
Double Track ◽  
Bridge System

When two lines with 20 same high-speed passenger vehicles are traveling on the 40 m+4×72 m+40 m party pre-stressed concrete continuous box-girder bridge from both ends, this bridge vertical load-carrying frequency is calculated with the vehicle-bridge system mode1. When the vehicle parameters, such as the unsprung mass of each wheel-set of the vehicle, the suspension spring stiffness, the vehicle length and the mass of the vehicle, are changed, the bridge vertical load-carrying frequencies are changed too. But when the train speed is changed, the bridge vertical load-carrying frequencies aren’t changed. It is shown that the bridge vertical load-carrying frequency is the vehicle-bridge system natural frequency, it is only depend on its natural parameters.

Vertical Load-Carrying Natural Frequency of Railway Double-Track Pre-Stressed Concrete Continuous Bridge

2011 ◽  
Vol 255-260 ◽  
pp. 797-800 ◽  
Author(s):  
Jian Ying Ren ◽  
Wen Ping Li ◽  
Mu Biao Su ◽  
Qing Yuan Zeng
Keyword(s):  
Natural Frequency ◽  
High Speed ◽  
Maximum Deviation ◽  
Vertical Load ◽  
Box Girder ◽  
Average Value ◽  
Passenger Vehicles ◽  
Load Carrying ◽  
Girder Bridge ◽  
Double Track

The railway double-track continuous bridge vertical load-carrying frequency is theoretical derived with the vehicle-bridge system mode1. The vertical load-carrying frequencies of the 40 m+4×72 m+40 m party pre-stressed concrete continuous box-girder bridge are calculated, when two trains with 20 same high-speed passenger vehicles are traveling on the bridge from both ends. The change regularity of this double-track continuous bridge vertical load-carrying natural frequency with two trains on it is similar with that of the single-track simply supported bridge and this bridge as one train on it. This bridge vertical load-carrying frequency when two trains on it is smaller than that only train on it. The maximum deviation percentage between the vertical load-carrying natural frequency and the vertical natural frequency is 1.17837%.This bridge vertical load-carrying frequency can be replaced by its natural frequency, and there isn’t obvious error. If the vertical load-carrying frequency should be calculated, it can be replaced by the average value.

Experimental Study of Composed Wall with Site Laying Reinforcing Rib under the Effect of Vertical Load

2014 ◽  
Vol 501-504 ◽  
pp. 954-958
Author(s):  
Wei Dong Sun ◽  
Xin Yu Niu
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Energy Saving ◽  
Failure Mode ◽  
Building Structure ◽  
Vertical Load ◽  
Environmental Friendly ◽  
Earthquake Resistant ◽  
Load Carrying

Composed wall with site laying reinforcing rib is composed of reinforced concrete rib, girtstrip and filling brickwork. This kind of wall is energy-saving, environmental-friendly and of good earthquake resistant performance. It is suitable to village building structure. In this paper, the load carrying capability and failure mode of this kind of composed wall under the effect of vertical load, the maximum bearing capacity of the wall and its influencing factors are mainly introduced.

scholarly journals Ultimate Capacity of Vertical Pile Subjected to Combination of Vertical and Lateral Load

2019 ◽  
Vol 8 (9S2) ◽  
pp. 647-652
Keyword(s):  
Carrying Capacity ◽  
Ultimate Load ◽  
Lateral Load ◽  
Load Factor ◽  
Load Carrying Capacity ◽  
Vertical Load ◽  
Ultimate Capacity ◽  
Inclined Load ◽  
Load Carrying ◽  
Ultimate Load Carrying Capacity

Pile under general condition is subjected to combination of vertical and lateral loads In the analytical approaches to predict the load-displacement responses of a pile under central inclined load, it is assumed that the lateral displacement of the pile head is independent by the vertical load factor of the inclined load. Similarly, while estimating the ultimate resistance it is considered that the vertical load factor of the inclined load does not influence the ultimate lateral resistance of the pile during determination of ultimate load carrying capacity of vertical pile. In the present work, an empirical relation has been developed to predict the ultimate load carrying capacity of vertical piles subjected to combination of both vertical and lateral load in cohesion less soil. Effect of lateral load on vertical load deflection behavior of vertical piles when axial loads are present are discussed through several experimental results obtained from tests on model piles. Ultimate capacity is found to be a continuous function of ultimate lateral load, ultimate vertical load capacity and tangent of angle of resultant load made with vertical axis of pile.

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