scholarly journals The effect of using concrete-filled tube columns on steel moment frame with different numbers of stories by dynamic time history analysis

2020 ◽  
Vol 12 (2) ◽  
pp. 266-276
Author(s):  
Farshad Shekari ◽  
Mohsen Oghabi
Keyword(s):  
Time History ◽  
Time History Analysis ◽  
Moment Frame ◽  
Steel Moment Frame ◽  
History Analysis ◽  
Dynamic Time

Investigation on Effect of Analysis Variables on Structural Integrity of the Nuclear Piping Under Beyond Design Basis Earthquake

2017 ◽  
Author(s):  
Jong-Sung Kim ◽  
Suk-Hyun Lee ◽  
Hyeong Do Kweon
Keyword(s):  
Finite Element ◽  
Structural Integrity ◽  
Seismic Analysis ◽  
Time History ◽  
Time History Analysis ◽  
Design Basis ◽  
History Analysis ◽  
Study Results ◽  
Transition Length ◽  
Dynamic Time

In this study, effect of analysis variables on structural integrity of nuclear piping under beyond design basis earthquake was investigated via performing dynamic time history seismic analysis. A finite element model of the piping system such as shut-down cooling line was developed combining solid and beam elements. Dynamic time history analysis was performed via finite element elastic plastic stress analysis. Validity of the dynamic time history analysis procedure was verified via comparing with the previous study results. Finally, the effect of analysis variables such as finite element characteristics, transition length between elbow and straight line, fluid effect, etc. was investigated via performing parametric dynamic time history seismic analysis. As a result, it was found that use of the 1st incompatible element is recommended, the transition length is the same as curvature of the elbow, and fluid has to be considered.

Second-order dynamic time-history analysis of beam-columns with nonsymmetrical thin-walled steel sections

2021 ◽  
Vol 160 ◽  
pp. 107367
Author(s):  
Wen-Long Gao ◽  
A.H.A. Abdelrahman ◽  
Si-Wei Liu ◽  
Ronald D. Ziemian
Keyword(s):  
Time History ◽  
Time History Analysis ◽  
Second Order ◽  
Beam Columns ◽  
History Analysis ◽  
Steel Sections ◽  
Thin Walled ◽  
Dynamic Time

Design of FPB about Bridge in High-Intensity Earthquake Area

2013 ◽  
Vol 838-841 ◽  
pp. 1577-1580
Author(s):  
Jun Yong Xia ◽  
Ling Jun Kong ◽  
Xin Yun Leng
Keyword(s):  
High Intensity ◽  
Seismic Isolation ◽  
Time History ◽  
Time History Analysis ◽  
Parameter Determination ◽  
Design Verification ◽  
History Analysis ◽  
Dynamic Time ◽  
Earthquake Area ◽  
Design And Application

In this paper, a seismic isolation scheme by FPB about bridge in high-intensity earthquake area is introduced. Typical methods and calculation examples of using dynamic time-history analysis in this scheme as well as the process and methods of parameter determination and design verification of FPB are put forward. All these methods play guiding roles in the seismic isolation design of bridges and the design and application of FPBs.

Research on Dynamic Characteristics and Response of Double-Tower Connected Structures

2014 ◽  
Vol 578-579 ◽  
pp. 877-881
Author(s):  
Qiang Liu
Keyword(s):  
Comparative Study ◽  
Dynamic Analysis ◽  
Modal Analysis ◽  
Dynamic Characteristics ◽  
Time History ◽  
Structure Type ◽  
Time History Analysis ◽  
Analysis Method ◽  
History Analysis ◽  
Dynamic Time

The dynamic analysis method and theory of double-tower connected structures is discussed in this paper .Then modal analysis、static and dynamic time-history analysis is researched with the FEM software ANSYS. Through the structure of monomer and comparative study of the structure in different locations, the basic rules of dynamic characteristics and the rules of layout corridor can be achieved. In addition, by symmetric and asymmetric conjoined comparative study, the basic choose rules of structure type can also be achieved.

Influence Factors and Repair Effects of Seismic Damage to a Box Section Steel Pier

2019 ◽  
Vol 13 (03n04) ◽  
pp. 1940001
Author(s):  
Zhongqiu Fu ◽  
Dongyang Wu ◽  
Liang Fang ◽  
Donghua Chen ◽  
Bohai Ji
Keyword(s):  
Energy Dissipation ◽  
Bearing Capacity ◽  
Seismic Performance ◽  
Nonlinear Dynamic ◽  
Time History ◽  
Time History Analysis ◽  
Steel Plates ◽  
Box Section ◽  
History Analysis ◽  
Dynamic Time

The seismic performance of a steel pier of box section was studied through low-cycle cyclic testing. The damaged specimens were repaired by filling with concrete and welding steel plates. The low-cycle cyclic test was then repeated. The effects of repairs were investigated by comparison of failure mode, energy dissipation performance, and ductility before and after repair. To supplement the data, the influence of different factors on the seismic bearing capacity and ductility of steel piers were analyzed by finite element method. The repair effects were compared by threshold of the displacement from the experiment. Based on the displacement angle response of the nonlinear dynamic time history analysis, the seismic performance is checked. The results show that repair had favourable effects on the damaged specimens. The horizontal bearing capacity and ductility of the specimens filled with concrete are significantly enhanced. Reinforcement by steel plates can increase the ductility and cumulative energy dissipation of the steel pier. An axial compression ratio of 0.2 and a concrete filling ratio of 30% are suggested. The horizontal bearing capacity can be improved by increasing the steel strength while the concrete strength shows little effect. The angular displacement from nonlinear dynamic time-history analysis was less than the test threshold, so the existing methods used for seismic performance verification are safe.

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