Guidelines for Numerical Analysis and Seismic Design of Underground Pipes

Application of Numerical Analysis and Model Experiment on Seismic Design of Large Steel Celltype Quay Wall

PROCEEDINGS OF COASTAL ENGINEERING JSCE ◽

10.2208/proce1989.55.936 ◽

2008 ◽

Vol 55 ◽

pp. 936-940

Author(s):

Kazunobu MOROHOSHI ◽

Eiji KOHAMA ◽

Masaharu WATANABE ◽

Osamu KIYOMIYA ◽

Takahiro SUGANO ◽

...

Keyword(s):

Numerical Analysis ◽

Seismic Design ◽

Model Experiment ◽

Large Steel ◽

Quay Wall

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The Timber Floor Seismic Design by Means Finite Element Method

Civil Engineering Journal ◽

10.28991/cej-2019-03091352 ◽

2019 ◽

Vol 5 (7) ◽

pp. 1557-1565

Author(s):

Abdoullah Namdar ◽

Shan Saimai

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Numerical Analysis ◽

Seismic Design ◽

Input Data ◽

Damping Ratio ◽

Seismic Load ◽

The Finite Element Method ◽

Load Response ◽

Element Method

To improve accuracy results of numerical analysis, the finite element method software needs to use appropriately with considering accurate input data. Among several factors in realistic and economical seismic structural design, the damping ratio needs to be investigated as a calculated and input data in numerical analysis. In the present study, the effect of accurate damping ratio on timber floor seismic design has numerically been examined. The 6 first modes from a series of eigenvalues were selected to calculate natural frequency and damping ratio. The seismic results with and without applied calculated damping ratio were compared. The strain, displacement, and seismic load response are interpreted. The numerical analysis results were showed that the higher nonlinear displacement occurs in timber floor when the damping ratio was modified in numerical modeling. It was found that the floor seismic design is more critical compared to a column in select accurate damping ratio. The damping ratio has highly effect on timber floor seismic design.

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SHAKING TABLE TESTS AND NUMERICAL ANALYSIS FOR VERTICAL SEISMIC RESPONSE OF QUAYSIDE CONTAINER CRANES

International Journal of Structural Stability and Dynamics ◽

10.1142/s0219455412500344 ◽

2012 ◽

Vol 12 (05) ◽

pp. 1250034 ◽

Cited By ~ 4

Author(s):

Y. L. JIN ◽

T. X. WU ◽

Z. G. LI

Keyword(s):

Numerical Analysis ◽

Seismic Design ◽

Large Scale ◽

Shaking Table ◽

Earthquake Resistance ◽

Shaking Table Tests ◽

Seismic Excitations ◽

Engineering Structures ◽

Scaled Model ◽

Container Cranes

Vertical seismic performance is an important issue for the seismic design of large-scale engineering structures. The structure, which is relatively flexible and unrestricted vertically, may resonate and its response is obviously magnified under vertical earthquake excitations. The main objective of this study is to investigate the earthquake-resistance performance of a quayside container crane under vertical seismic excitations. To this end, a geometric-scaled model of 1:50 was firstly constructed according to the similitude law. Then using this model, a hammering modal test and a series of shaking table tests were successively conducted to obtain the dynamic characteristics and vertical seismic responses. Furthermore, the experimental results were compared with the computed results of prototype obtained from numerical analysis and agreed fairly well. From dynamic response results, it is found that the large-scale structure has relatively high vertical earthquake-resistance capacity and could satisfy the seismic design requirement. The findings reported in this paper are expected to provide some valuable information for studying other similar structures in the future.

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