Dynamic Response of Concrete Arch Bridge under Blast Loading

2014 ◽  
Vol 501-504 ◽  
pp. 1283-1286
Author(s):  
Xing Jun Qi ◽  
Qing Liu ◽  
Fang Jian Shang
Keyword(s):  
Dynamic Response ◽  
Impact Load ◽  
Blast Loading ◽  
Calculation Model ◽  
Repair Work ◽  
Arch Bridge ◽  
Long Span ◽  
Damage Degree ◽  
Long Span Bridge ◽  
Explosion Accidents

In order to reduce loss of terrorist attacks or accidental explosion accidents to traffic facilities of the state and society, antiknock safety of long-span bridge needs to be further studied. A deck arch bridge calculation model of fluid-structure interaction was established, and explicit dynamic analysis was presented to study the dynamic response of long-span arch bridge under blast loading, and the explosion effect to the overall structure of the bridge was analysed. The results show that the area around explosion center, has local large deformation and heavy damage degree, while a little far region has low deformation and damage degree; When explosives is located on the deck, the damage of blast-impact load on the main arch ring can be neglected, which is advantageous to the late bridge repair work. The results of this article can be provided as important theoretical reference to antiknock and explosion-proof of bridges in the future work.

Rush Repair Method and Suggestion of Long-Span Arch Bridge in Wartime

2012 ◽  
Vol 538-541 ◽  
pp. 3211-3214
Author(s):  
Li He ◽  
Yong Jiu Qian
Keyword(s):  
Damage Assessment ◽  
Research Work ◽  
Blast Loading ◽  
Arch Bridge ◽  
Repair Method ◽  
Long Span ◽  
Future War ◽  
Arch Bridges ◽  
Damage Condition ◽  
Modern War

The enemies pay much attention to the opponent significant bridge in modern war and future war. A number of long-span arch bridges are damaged by blast loading. According to the damage condition and damage assessment of long-span arch bridge subjected to blast loading, a variety of methods suitable for rush repair in wartime are summarized, the rationalization proposals of enhancing anti-blast ability of long-span arch bridge are proposed. The research work is meaningful for the rush repair of long-span arch bridge.

scholarly journals Dynamic Response of a Long-Span Concrete-Filled Steel Tube Tied Arch Bridge and the Riding Comfort of Monorail Trains

2018 ◽  
Vol 8 (4) ◽  
pp. 650 ◽  
Author(s):  
Hongye Gou ◽  
Wen Zhou ◽  
Changwei Yang ◽  
Yi Bao ◽  
Qianhui Pu
Keyword(s):  
Dynamic Response ◽  
Steel Tube ◽  
Arch Bridge ◽  
Concrete Filled Steel Tube ◽  
Long Span ◽  
Tied Arch Bridge

Typical diseases of a long-span concrete-filled steel tubular arch bridge and their effects on vehicle-induced dynamic response

2020 ◽  
Vol 14 (4) ◽  
pp. 867-887
Author(s):  
Jianling Hou ◽  
Weibing Xu ◽  
Yanjiang Chen ◽  
Kaida Zhang ◽  
Hang Sun ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Arch Bridge ◽  
Long Span

Design and Optimization of Concrete-Filled Steel Tube Arch Bridge Using Cable-Hoisting Method

2011 ◽  
Vol 255-260 ◽  
pp. 896-900
Author(s):  
Xiao Fei Liang ◽  
Yue Xu ◽  
Hong Jing Du
Keyword(s):  
Steel Tube ◽  
Hunan Province ◽  
Construction Technology ◽  
Systematic Analysis ◽  
Arch Bridge ◽  
Design And Optimization ◽  
Long Span ◽  
Long Span Bridge ◽  
Cfst Arch Bridge ◽  
Hoisting System

Based on the hoisting construction feature of large hinge-support tower and field circumstance, the cable hoisting system for Meng-dong river grand bridge at the west of Hunan province is designed. Studying on cable hoisting system design and construction of the CFST arch bridge, the paper takes systematic analysis and calculations on the key construction technology of the CFST arch bridge, and puts it in practice successfully which provides experience for the similar long—span bridge construction of the follow.

Analysis on the Collision Couple between Drift Ice and Long-Span Prestressed Concrete T-Rigid Frame Bridge Pier

2015 ◽  
Vol 648 ◽  
pp. 17-24
Author(s):  
Jian Min Zhang ◽  
Zheng Guo Yuan ◽  
Ying Ping Wu
Keyword(s):  
Prestressed Concrete ◽  
Calculation Model ◽  
Bridge Pier ◽  
Long Span ◽  
Rigid Frame ◽  
Long Span Bridge ◽  
Cold Area ◽  
Collision Force ◽  
The Stability ◽  
Rigid Frame Bridge

Long-span bridge across the river in cold areas, is often impacted by the drift ice in spring, thus having some severe effects on the stability and vibration of the bridge structure. With a long-span prestressed concrete T-rigid frame bridge as studied object, based on the display analysis function of the LS-DYNA software, this paper represents the simulating process of the contact and collision between the drift-ice and T-rigid frame bridge pier, and the influence of various factors was analyzed, such as model boundary condition, contact types of river ice and pier, algorithm and element connection transition area. Thus the reasonable calculation model of the collision force caused by drift-ice to pier was determined. The result has important theoretical and practical value to ensure the safety of the bridge in cold area, as well as to reduce the project cost.

Seismic Response Analysis of Long-Span Bridge under Uniform and Traveling-Wave Excitations

2011 ◽  
Vol 368-373 ◽  
pp. 690-694
Author(s):  
Kai Yan Xu ◽  
De Min Wei ◽  
Can Liu
Keyword(s):  
Traveling Wave ◽  
Strong Motion ◽  
Response Analysis ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Damage Degree ◽  
Long Span Bridge ◽  
Property Loss ◽  
Object Of Study ◽  
Flexible Component

Earthquake is a kind of natural disaster which is difficult to predict and the damage degree is very great, occurrence of the strong motion often leads to the tremendous life and property loss. Bridge is an important part of the lifeline engineering, it is very necessary to conduct the comprehensive and systemic investigation on the bridge aseismic. In this paper, a 670.56m span cable-stayed bridge was chosen as object of study, the FEM model of it was established, and the dynamic characteristic and nonlinear seismic responses under uniform and traveling-wave excitations were systematic studied. The results show that: 1) the mode of connection between the pier, tower and the beam is crucial to the dynamic response of bridge which should be simulated correctly. 2) Its former 10 rank frequency are located very close which shows that more mode shape should be taken into account when dealing with the dynamic analysis. 3) The traveling-wave excitation has appreciable impact on such kind of cable-stayed bridge, especially on the more flexible component, which should be paid much attention to while design.

Application of Fuzzy Comprehensive Evaluation Method in Long-Span Arch Bridge Damaged in Wartime

2012 ◽  
Vol 538-541 ◽  
pp. 940-944
Author(s):  
Li He ◽  
Yong Jiu Qian
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Blast Loading ◽  
Fuzzy Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Arch Bridge ◽  
Comprehensive Evaluation Method ◽  
Long Span ◽  
Main Factors ◽  
Damage Condition

In order to quickly assess the damaged long-span arch bridge in wartime, fuzzy comprehensive evaluation method (FCEM) is applied. Considering the main factors of strength, stiffness and stability, ignoring durability and applicability, the damage performance evaluation elements of long-span arch bridge subjected to blast loading are concluded. Combined with the specific long-span arch bridge subjected to blast loading, the damage condition is assessed with FCEM. For illustration, a highway arch bridge damaged in wartime is utilized to show the feasibility of FCEM. Because of the damaged features of uncertainty and fuzzy, FCEM can effectively assess the damaged conditions of a long-span arch bridge.

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