APPLICATIONS OF SMART BRICKS FOR STRAIN FIELD RECONSTRUCTION IN MASONRY WALLS: NUMERICAL ANALYSIS AND SHAKING TABLE TESTS

2019 ◽  
Author(s):  
Antonella D'Alessandro ◽  
Andrea Meoni ◽  
Nicola Cavalagli ◽  
Massimiliano Gioffrè ◽  
Filippo Ubertini
Keyword(s):  
Numerical Analysis ◽  
Strain Field ◽  
Shaking Table ◽  
Masonry Walls ◽  
Shaking Table Tests ◽  
Field Reconstruction

scholarly journals Shaking Table Tests and Numerical Analysis on the Seismic Response of Karst-Crossing Socketed Piles in Dry Sandy Soil Foundation

2020 ◽  
Vol 15 (5) ◽  
pp. 701-709
Author(s):  
Peisen Wang ◽  
Hongyan Ding ◽  
Puyang Zhang
Keyword(s):  
Numerical Analysis ◽  
Seismic Response ◽  
Strain Distribution ◽  
Shaking Table ◽  
Karst Cave ◽  
Peak Strain ◽  
Shaking Table Tests ◽  
Karst Areas ◽  
Foundation Pile ◽  
Friction Pile

The foundation piles in karst areas have different mechanical properties from those in other areas. Targeting a critical highway bridge in a karst area, this paper designs two kinds of foundation pile models: friction pile, and KCSP, based on theories on dynamic tests. Then, shaking table tests were carried out to ascertain the features of pile strain distribution of KCSP under earthquakes. During the tests, a large laminar suspended shear box was adopted to mimic the boundary effect of soil. In addition, numerical simulations were conducted to disclose the effects of karst cave on pile strain. The test results indicate that: the peak strain of KCSP increased with the peak acceleration; For both KCSP and friction pile, the peak strain decreased first and then increased along the depth; The presence of karst cave can adversely affect the seismic response of foundation pile; The taller the karst cave, the larger the peak strain of the pile; the peak strain of KCSP was larger at the two ends, and smaller in the middle. The numerical analysis shows that: the peak strain of foundation pile in karst cave increased significantly with cave height; The peak strain of the pile passing through multiple caves was similar to that of the pile passing through only one cave, under the same cave height; But the multi-cave scenario differed from the single-cave scenario in peak strain distribution. The research results provide new insights into the seismic design of pile foundation of bridges in karst areas.

scholarly journals NUMERICAL ANALYSIS FOR SHAKING TABLE TESTS OF WOODEN HOUSES CONSIDERING CONSTRAINT OF DEFORMATION BY EXTERIOR MORTAR WALLS

2016 ◽  
Vol 81 (724) ◽  
pp. 971-980 ◽  
Author(s):  
Takafumi NAKAGAWA ◽  
Mikio KOSHIHARA ◽  
Tatsuya MIYAKE ◽  
Hiroshi ISODA ◽  
Takahiro TSUCHIMOTO ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Shaking Table ◽  
Shaking Table Tests

scholarly journals Seismic Response of Flat Ground and Slope Models through 1 g Shaking Table Tests and Numerical Analysis

2021 ◽  
Vol 11 (4) ◽  
pp. 1875
Author(s):  
Yong Jin ◽  
Hoyeon Kim ◽  
Daehyeon Kim ◽  
Yonghee Lee ◽  
Haksung Kim
Keyword(s):  
Numerical Analysis ◽  
Seismic Waves ◽  
Shaking Table Test ◽  
Time History ◽  
Shaking Table ◽  
Numerical Analyses ◽  
Shaking Table Tests ◽  
Shear Box ◽  
Laminar Shear ◽  
Flat Ground

In order to verify the reliability of numerical analysis, a series of 1 g shaking table tests for flat ground and slope were conducted using a laminar shear box subjected to different seismic waves. Firstly, numerical analyses, using the DEEPSOIL and ABAQUS software, were done to compare the results of flat ground experiments. After that, finite element analyses with ABAQUS were conducted to compare the results of slope experiments. For numerical analyses, considering the influence of the boundary, the concept of adjusted elastic modulus was proposed to improve the simulation results. Based on the analyses, it is found that in terms of acceleration-time history and spectral acceleration, the numerical analysis results are in good agreement with the experiment results. This implies that numerical analysis can capture the dynamic behavior of soil under 1 g shaking table test conditions.

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

2012 ◽  
Vol 12 (05) ◽  
pp. 1250034 ◽  
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.

Sign in / Sign up

Export Citation Format

Share Document