Nonlinear random seismic response analysis of the double-trough aqueduct based on fiber beam element model

Research and development of three-dimensional vibration simulation technologies for nuclear facilities is one mission of the Center for Computational Science and e-Systems of the Japan Atomic Energy Agency (JAEA). A seismic intensity of upper 5 was observed in the area of High-Temperature Engineering Test Reactor (HTTR) at the Oarai Research and Development Center of JAEA during the 2011 Tohoku earthquake. In this paper, we report a seismic response analysis of this earthquake using three-dimensional models of the HTTR building. We performed a parametric study by using uncertainty parameters. Furthermore, we examined the variation in the response result for the uncertainty parameters to create a valid 3D finite element model.

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Random Seismic Response Analysis of Long-Span Bridge Structures

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.2157 ◽

2012 ◽

Vol 204-208 ◽

pp. 2157-2161 ◽

Cited By ~ 1

Author(s):

Zhang Jun Liu ◽

Yan Fu Xing ◽

Yong Wan

Keyword(s):

Seismic Response ◽

Independent Random Variables ◽

Response Analysis ◽

Orthogonal Expansion ◽

Bridge Structure ◽

Seismic Response Analysis ◽

Long Span ◽

Long Span Bridge ◽

Bridge Structures ◽

Random Seismic Response

Based on the orthogonal expansion method of stochastic processes, seismic acceleration processes can be represented as a linear combination of deterministic functions modulated by a set of mutually independent random variables. In conjunction with the probability density evolution method, the random seismic response of bridge structures can be successfully researched. A long-span bridge structure is taken as an example. The probabilistic information of the response of a long-span bridge structure in different control under earthquake excitations is investigated. The investigation provides a new approach to the random seismic response analysis of long-span bridge structures.

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Research on the random seismic response analysis for multi- and large-span structures to multi-support excitations

Earthquake Engineering and Engineering Vibration ◽

10.1007/s11803-015-0042-1 ◽

2015 ◽

Vol 14 (3) ◽

pp. 527-538 ◽

Cited By ~ 4

Author(s):

Bo Zhao ◽

Yuanqing Wang ◽

Zhihua Chen ◽

Yongjiu Shi ◽

Yang Jiang ◽

...

Keyword(s):

Seismic Response ◽

Response Analysis ◽

Seismic Response Analysis ◽

Large Span ◽

Random Seismic Response

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Finite Element Seismic Response Analysis of a Reinforced Concrete Pier with a Fractured Fine Tetrahedron Mesh

Journal of Earthquake and Tsunami ◽

10.1142/s1793431116400133 ◽

2016 ◽

Vol 10 (05) ◽

pp. 1640013

Author(s):

Shigenobu Okazawa ◽

Takumi Tsumori ◽

Takuzo Yamashita ◽

Satoyuki Tanaka

Keyword(s):

Finite Element ◽

Reinforced Concrete ◽

Seismic Response ◽

Seismic Waves ◽

Element Model ◽

Response Analysis ◽

Analysis Model ◽

Seismic Response Analysis ◽

Seismic Experiment ◽

Node Connectivity

A seismic response analysis of a reinforced concrete (RC) pier has been undertaken using seismic waves recorded at the Takatori station during the southern Hyogo perfecture earthquake in 1995 in Japan. Distinguishing characteristics of this analysis are as follows. First, the RC pier has been modeled using the finite element method with a solid mesh. The analysis model has been generated using tetrahedral elements with node connectivity, not only in the concrete but also in the reinforcement steel. Also, an analysis has been undertaken on fracture treatments in the concrete. Using PDS-FEM, a system of suitable fractures in the concrete resulting from the seismic event can be simulated. Ultimately, a finite element model is established with a fine tetrahedron mesh with about 20 million elements. We calculate a seismic response analysis using the K computer at the RIKEN Advanced Institute for Computational Science, and compare that result with a seismic experiment in E-Defense to confirm the computational approach.

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Simulation of the In Situ Spatially Varying Ground Motions and Nonlinear Seismic Response Analysis of the Cable-Stayed Bridge

Shock and Vibration ◽

10.1155/2020/3063402 ◽

2020 ◽

Vol 2020 ◽

pp. 1-19

Author(s):

Jin Zhang ◽

Ke-jian Chen ◽

Neng-pan Ju ◽

Shi-xiong Zheng ◽

Hong-yu Jia ◽

...

Keyword(s):

Seismic Response ◽

Ground Motions ◽

Element Model ◽

Response Analysis ◽

Seismic Response Analysis ◽

Nonlinear Seismic Response ◽

Cable Stayed Bridge ◽

Long Span ◽

Wave Effects

To study the nonlinear seismic behavior and seismic resistance of the long-span cable-stayed bridges subjected to earthquakes, the multidimensional and multisupported artificial ground motions are synthesized first based on the in situ site conditions of the bridge considering the coherent and traveling wave effects. Then, considering the material nonlinearity of the cable-stayed bridge, a 3D finite element model is established based on the OpenSees platform, and the nonlinear seismic response analysis of the bridge is carried out under the synthetic artificial ground motions. The nonlinear seismic response of main bridge components such as piers, towers, bearings, and cables is analyzed, and key conclusions and observations are drawn.

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Damping Value for Seismic Response Analysis of Long-Span Bridges

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.90-93.1522 ◽

2011 ◽

Vol 90-93 ◽

pp. 1522-1525

Author(s):

Ling Ling Yu

Keyword(s):

Seismic Response ◽

Dynamic Properties ◽

Element Model ◽

Response Analysis ◽

Seismic Response Analysis ◽

Long Span Bridges ◽

Rayleigh Damping ◽

Long Span ◽

Damping Theory ◽

The Finite Element Model

The current problems on damping in seismic response analysis of bridges is presented. The Rayleigh damping theory is simply introduced in this paper. Taking the Longtan River Bridge for instance, the finite element model of Longtan River Bridge (left line) is established. Then, the dynamic properties of the bridge is analyzed. Based on this, the Rayleigh damping constants and in an ANSYS dynamic analysis are obtained.

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