Three-Dimensional Seismic Response Analysis of Buried Continuous or Jointed Pipelines

This paper presents a three-dimensional quasi-static analysis of continuous or jointed pipelines. Transfer Matrix Method was applied to the analysis providing for nonlinear behaviors of joints and soil frictions. An improved computer program ERAUL-II (Earthquake Response Analysis of Underground Lifelines-II) was developed for numerical computations. First, numerical response analyses were carried out for three-dimensional pipe systems with steel or cast iron pipe materials subject to large ground deformations or seismic ground motions. Analytical results show that torsional properties of pipes are also important factors for seismic behavior, which cannot be known by two-dimensional analyses. Second, experimental test data of three-dimensional steel pipe systems were simulated by using the ERAUL-II program. Simulated results agree well with the experimental values.

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Analysis on Aseismic Performance of the Beijing Yintai Center

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.163-167.3872 ◽

2010 ◽

Vol 163-167 ◽

pp. 3872-3877

Author(s):

Zhi Qiang Zhang ◽

Ai Qun Li ◽

Yong Sun ◽

Meng Ya Huang

Keyword(s):

Seismic Behavior ◽

Dynamic Properties ◽

Three Dimensional ◽

Response Analysis ◽

Analysis Method ◽

Element Analysis ◽

Plastic Analysis ◽

Earthquake Action ◽

Rare Earthquake ◽

Three Dimensional Finite Element

In this study, the seismic behavior of the main tower building of Beijing Yintai Center is presented with regard to the dynamic characteristics analysis and seismic response analysis. Firstly, by means of three-dimensional finite element analysis software, the dynamic properties and seismic responses under frequent earthquake action of the structure are obtained, respectively. It can be seen that the structure has a rational arrangement for structural elements and has a good seismic behavior. Then, the seismic behavior of the structure is studied through the dynamic elasto-plastic analysis method and static elasto-plastic analysis method under rare earthquake. Analysis results of both analysis methods show that the behavior of the structure accords with the earthquake performance objectives and the structure would not collapse under the rare earthquake action.

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Seismic Response Analysis of Inclined Leg Rigid Frame Bridge Considering Soil-Pile Interaction

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.90-93.1220 ◽

2011 ◽

Vol 90-93 ◽

pp. 1220-1223

Author(s):

Chun Hui Zhang ◽

Xing Jun Qi ◽

Qi Hui Chen

Keyword(s):

Seismic Response ◽

Ground Motion ◽

Dynamic Characteristics ◽

Ground Motions ◽

Three Dimensional ◽

Element Model ◽

Response Analysis ◽

Rigid Frame ◽

Pile Interaction ◽

Rigid Frame Bridge

In this article, an inclined leg bridge is taken as the research object. The three-dimensional finite element model is established, and soil spring is used to simulate soil-pile interaction. The dynamic characteristics of the two models are calculated. Two different ground motions are selected to analyze seismic response of the bridge. The dynamic characteristics and seismic response of bridge are compared in the conditions whether considering soil-pile interaction. The results show that the stress and displacement under qian’an ground motion action is bigger than that under Elcentro ground motion because the two ground motions have different frequency characteristics .After considering soil-pile interaction, the natural frequencies of inclined leg bridge decrease, and the longitudinal displacement of bridge increases obviously, at the same time the stress in the top and bottom of inclined leg increase obviously and the stress among main girder is not obviously increased. Soil-pile interaction maybe cause some adverse effect for inclined leg rigid frame bridge.

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An Improved Fault-to-Site Analysis Tool Towards Fully HPC-Enhanced Physics-Based Urban Area Response Estimation

Journal of Earthquake and Tsunami ◽

10.1142/s1793431116400182 ◽

2016 ◽

Vol 10 (05) ◽

pp. 1640018 ◽

Cited By ~ 1

Author(s):

Pher Errol B. Quinay ◽

Tsuyoshi Ichimura

Keyword(s):

Urban Area ◽

Ground Motions ◽

Earthquake Response ◽

Response Analysis ◽

Analysis Tool ◽

Good Balance ◽

Site Analysis ◽

Step Procedure ◽

Earthquake Response Analysis ◽

Area Response

This paper describes the improvement to a fault-to-site analysis tool for use in a fully HPC-enhanced physics-based urban earthquake response analysis. We developed a three-step procedure, involving coarse and refined partitioning for the preprocessing stage, that achieves good balance in computational load and FE nodes used in communications. An end-to-end approach to computing in K computer was also implemented. The results of strong- and weak-scaling tests validate the capability of the tool for application to dynamic analysis involving billions of unknowns. In application to reproduction of observed ground motions, improvements in solution in comparison with previously conducted validations were obtained. The tool was also used to generate synthetic ground motions for analyzing the response of thousands of buildings in an urban area due to a scenario earthquake.

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