Analysis for Seismic Response of Long Span Rigid Frame Bridge

2011 ◽  
Vol 194-196 ◽  
pp. 1962-1966
Author(s):  
Xiao Jun Ning ◽  
Yi Tang Zhou
Keyword(s):  
Seismic Response ◽  
Lower Cost ◽  
Bending Moment ◽  
Bridge Design ◽  
Long Span ◽  
Rigid Frame ◽  
Rigid Frame Bridge ◽  
Intensity Region

Rigid frame bridge is widely used in China because of its lower cost. The aseismatic ability of rigid frame bridge is difficult to judge for designer when the bridge is used to span valley in intensity region. The seismic response of one rigid frame bridge with 160m span is calculated. It is indicated that the aseismatic ability of rigid frame bridge is good and bridge design is controlled by bending moment at bottom of pier.

Analysis on Long-Span Bridge Seismic Response in Multi-Dimensional and Multi-Point Mode

2011 ◽  
Vol 117-119 ◽  
pp. 58-61
Author(s):  
Cang Hai Zhang ◽  
Jun Wu Dai
Keyword(s):  
Seismic Response ◽  
Single Track ◽  
Academic Field ◽  
Excitation Mode ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Long Span Bridge ◽  
Rigid Frame Bridge ◽  
Specific Project

The Seismic excitation mode has been the hot and difficult topic both in engineering and academic field. This paper mainly discussed the excitation direction and the combination of excitation direction of ground motion, comparatively analyzed seismic response in four excitation mode, which including the single-track one-point incentive, single-track multi-point incentive, much-track one-point incentive, and much-track multi-point incentive, with specific project examples of large-span continuous rigid frame bridge, and get the corresponding conclusions.

Seismic Response Analysis on Continuous Rigid-Frame Bridges with High Piers Based on Fiber Model

2012 ◽  
Vol 446-449 ◽  
pp. 3710-3713
Author(s):  
Kai Wu Jia ◽  
Ming Quan Liu ◽  
Xi Min Song ◽  
Hong Zhen Kang
Keyword(s):  
Seismic Response ◽  
Shear Force ◽  
Travelling Wave ◽  
Response Analysis ◽  
Fiber Model ◽  
2008 Wenchuan Earthquake ◽  
Nonlinear Seismic Response ◽  
Long Span ◽  
Rigid Frame ◽  
Rigid Frame Bridge

In this paper, with the help of program Thufiber, fiber model is used to simulate bridge piers, solid element is used to simulate the superstructure in program MSC.Marc. The effects of the travelling wave on the nonlinear seismic response of the long-span continuous rigid-frame bridge with high piers are analyzed under 2008 Wenchuan Earthquake Wave excitation. The results show that travelling wave has much effect on displacement and shear force of high piers of the bridge. The displacement of the pier top decreases 20% to 50% and the shear force at the pier base increases from 20% to 30%.

Seismic Response Analysis of Partial Curve Long-Span Rigid Frame Bridge with Super High Pier

2011 ◽  
Vol 308-310 ◽  
pp. 1314-1321
Author(s):  
Yang Liu ◽  
Da Wang ◽  
Min Hai Chen
Keyword(s):  
Seismic Response ◽  
Seismic Performance ◽  
Great Influence ◽  
Time History ◽  
Dynamical Stability ◽  
Response Analysis ◽  
Long Span ◽  
Rigid Frame ◽  
High Pier ◽  
Rigid Frame Bridge

Based on the time history analysis method, some curve long-span rigid frame bridge with super high pier in Sichuan was taken as the studying case, and a studying of natural vibration characteristics and seismic response. Comparative study was emphasis carried on seismic performance between the partial curve bridge and the straight. In addition, the exhaustive research to about between crosswise relation to the structure overall rigidity contribution and to the structure and the seismic performance influence is conducted. The conclusion of the study shows that the seismic performance of the straight long-span rigid frame bridge with super high pier is surpassing the curve bridge. The curve linear has little influence to the base frequency of this kind of structure, and The rigidity is mainly effected by the bridge pier. If additionally builds the crosswise relation between the structure, the dynamic characteristic of the structure will be improved greatly. The height of this type bridge has great influence on the dynamical stability, the height is lower and the dynamical stability is better, which is more advantageous to the structure seismic behavior.

Studies on the Mechanical Performance of Long Span Continuous Rigid Frame Bridge under the Influences of Different Curvature Radius

2014 ◽  
Vol 1020 ◽  
pp. 119-123
Author(s):  
Jiang Xiao Feng ◽  
Jun Dong ◽  
Tian Liang
Keyword(s):  
Mechanical Properties ◽  
Bending Moment ◽  
Tangential Displacement ◽  
Radius Of Curvature ◽  
Curvature Radius ◽  
Finite Element Software ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Rigid Frame Bridge

The effect of curvature radius on the mechanical properties of continuous rigid frame bridge with high pier and long span is studied in this paper. Taking the Wayaobao Bridge as the research object, the models including both of the linear rigid frame bridge and the different radius of curvature rigid frame bridge are established by using the finite element software MIDAS/Civil, and the mechanical properties of the finished stage are analyzed, and the influence of the radius of curvature on the deformation and internal force of continuous rigid frame bridge are researched. The alteration in curvature radius almost had no influence on the bridge vertical displacement, vertical bending moment. The tangential displacement gradually become smaller, but little change with the decrease of bridge’s curvature radius.The radial displacement, transverse bending moment, torque of the bridge increased with the decrease of bridge’s curvature radius.The force and deformation of the bridge structure are more unfavorable with the decrease of bridge's curvature radius. The study can provide some suggestions for design and construction control of curved frame bridge.

The Study of Aseismatic Performance of Continuous Rigid-Frame Bridge

2011 ◽  
Vol 243-249 ◽  
pp. 1901-1907
Author(s):  
Yong He Li ◽  
Ren Xiong ◽  
Ai Rong Liu ◽  
Jun Ping Zhang
Keyword(s):  
Plastic Hinge ◽  
Bending Moment ◽  
Reinforcement Ratio ◽  
Strong Impact ◽  
Plastic Rotation ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Rigid Frame Bridge ◽  
The Impact

The aseismatic performance of long span continuous rigid-frame bridge is an important but difficult research topic. To explore the impact of pier height and reinforcement ratio on long span continuous rigid-frame bridge’s aseismatic performance, Midas/Civil bridge Finite Element program is used to construct the three-dimensional model of a continuous rigid-frame bridge in this research. Fiber element and plastic hinge are used in pier simulation. Through the adjustment of pier height and ratio of reinforcement, the internal force, displacement and plastic rotation of bridge pier’s critical sections are analyzed under the action of seismic loading. Thereby, the impact of pier height and plastic hinge on such bridge’s aseismatic performance is obtained. It is shown that: maximum displacement, bending moment and plastic rotation increase at pier cap with pier height, indicating that pier height has strong impact on seismic response. And with increasing reinforcement ratio, the bending moment and yielding moment at pier cap and base both increase. Therefore, suitable pier height and reinforcement ratio should be selected for better aseismatic performance.

Study on Seismic Performance for Long-Span Continuous Rigid Frame Bridge

2014 ◽  
Vol 1079-1080 ◽  
pp. 292-295
Author(s):  
Ying Xin Hui ◽  
Wen Jie He ◽  
Xue Feng Li
Keyword(s):  
Performance Evaluation ◽  
Seismic Response ◽  
Seismic Performance ◽  
Thin Wall ◽  
Seismic Performance Evaluation ◽  
Long Span ◽  
Continuous Rigid Frame Bridge ◽  
Rigid Frame ◽  
Single Column ◽  
Rigid Frame Bridge

Compare the dynamic characteristics and earthquake response between double thin-wall pier and single column pier, also study influence of prestress to seismic response or seismic performance evaluation. The results showed that the performance of double thin-wall pier is more reasonable than that of single column pier, the influence of prestress to seismic response is too small, but is important to seismic performance evaluation which should be considered, and the force of internal and external limb should be reasonable to avoid large difference between the two limbs in serviceability state.

Sign in / Sign up

Export Citation Format

Share Document