scholarly journals DYNAMIC BEHAVIOR ANALYSIS OF A PLAIN CONCRETE PIER DURING SHAKING TABLE TEST BY USING REFINED DEM

2017 ◽  
Vol 73 (4) ◽  
pp. I_32-I_47
Author(s):  
Aiko FURUKAWA ◽  
Hiroki YOSHIKAWA ◽  
Junji KIYONO
Keyword(s):  
Behavior Analysis ◽  
Dynamic Behavior ◽  
Shaking Table Test ◽  
Plain Concrete ◽  
Shaking Table

Study on Dynamic Behavior of Ancient Timber Structures Roof

2013 ◽  
Vol 475-476 ◽  
pp. 1559-1562
Author(s):  
Jun Dai
Keyword(s):  
Dynamic Behavior ◽  
Vibration Isolation ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Maximal Response ◽  
Construction Technology ◽  
Magnification Factor ◽  
Finite Element Software ◽  
Moderate Earthquake ◽  
Dynamic Magnification Factor

The roof model of the palace timber buildings was established according to the construction technology of the Ying-tsao fa-shih. Based on its analysis of dynamic behavior with shaking table test and ANSYS finite element software, the dynamic behavior of structure and its maximal response under different conditions were gotten, and also the dynamic magnification factor of the beams layer and the whole structure were gotten, at last the results got by shaking table test was compared with the numerical simulation. Research shows that the nature frequency of the model is 1.486 Hz which is much bigger than that of the whole structure; the maximal displacement of beam layer gradually increases with the increase of ground motion intensity and the height of structure; the vibration isolation performance of semi-rigid tenon-mortise joints in rare earthquake (400gal) is better than that in moderate earthquake (220gal) and frequent earthquake (110gal); the dynamic magnification factor between layers was about 1, and roof 0.9 or so.

Shaking Table Test on Unreinforced Stone Masonry Pagoda

2012 ◽  
Vol 166-169 ◽  
pp. 730-733 ◽  
Author(s):  
Fei Zhu ◽  
Feng Lai Wang ◽  
Xu Jie Sun ◽  
Y. Zhao
Keyword(s):  
Dynamic Behavior ◽  
Seismic Performance ◽  
Seismic Design ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Cultural Value ◽  
Scale Model ◽  
Stone Masonry ◽  
Experimental Program ◽  
Ancient China

Unreinforced stone masonry pagodas have great cultural value and should be detailed investigation its mechanical properties. These buildings were not designed to resist earthquakes in ancient China, at least not in the way of current methods. The objectives of this research were to understand the dynamic behavior of unreinforced stone masonry pagoda and its seismic performance. To accomplish these, a 1/12 scale model of China Dinosaurs Pagoda was constructed and tested on shaking table. The octangle model height is 3.96m, with aspect ratio of height to width is 2.93, both parameters exceed the stipulated limit of Code for Seismic Design of Building. The model built with the stones and motars similar to the prototype materials and the arrangements. Its dynamic behavior and seismic performance were tested on the shaking table towards the free vibration and three earthquake waves. The experimental program adopted in the research is explained in this paper.

Dynamic Behavior of Buried Flexible Pipes of Varying Thickness Using the Shaking Table Test

2012 ◽  
Author(s):  
T. Kawabata ◽  
Y. Sonoda ◽  
Y. Mohri ◽  
M. Ariyoshi ◽  
Y. Iwasaki
Keyword(s):  
Dynamic Behavior ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Varying Thickness ◽  
Flexible Pipes

A Dynamic Behavior of the Frame Structure Allows the Columns to Uplift

2006 ◽  
Author(s):  
Tadashi Mikoshiba ◽  
Chikahiro Minowa ◽  
Takanori Sato ◽  
Li Shao ◽  
Toshio Chiba
Keyword(s):  
Dynamic Response ◽  
Dynamic Behavior ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Frame Structure ◽  
Structure Model ◽  
Seismic Impact

To investigate the dynamic behavior of the frame structure which allows the columns to uplift, a shaking table test was conducted by using a 4-story frame structure model. The effect of the absence or presence of the uplift and the damper in the column on the dynamic behavior of the structure were clarified. Dynamic response of the traditional frame structure with damper was compared to that of structure with damper in the columns. By using damper in the columns, the seismic impact of the structure was controlled. It is confirmed that the frame structure which is allowed the columns to uplift has an adequate seismic ability.

scholarly journals Dynamic Behavior of Ground Improved Using a Crushed Stone Foundation Wall

2019 ◽  
Vol 11 (10) ◽  
pp. 2767
Author(s):  
Su-Won Son ◽  
Pouyan Bagheri ◽  
Jin-Man Kim
Keyword(s):  
Dynamic Behavior ◽  
Shaking Table Test ◽  
Soft Soil ◽  
Shaking Table ◽  
Crushed Stone ◽  
Natural Period ◽  
Long Period ◽  
Acceleration Amplification ◽  
Short Period ◽  
Foundation Wall

The improvement of soft clay and dredged soils to carry structures is increasingly important. In this study, the dynamic behavior of a crushed stone foundation wall in clay soil was analyzed using a 1g shaking table test. The response accelerations and spectra for three input ground motions were analyzed relative to the distance from the foundation wall, confirming that the acceleration was damped from the outside. The acceleration according to the distance from the wall was not significant under long-period motions, while different responses were obtained under short-period motions. The increased ground stiffness provided by the crushed stone wall lowered the natural period of the ground, and the acceleration amplification under short-period seismic waves was larger than that under long-period waves. Finally, equations were derived to describe the relationship between the acceleration amplification ratio and distance from the wall. The slopes of the proposed equations are larger under shorter periods, implying that the change in acceleration change with distance from the wall is more significant under shorter periods. The results of this study can be used to inform the design of soft soil improvements and the structures built atop them.

Fiber Reinforced Concrete Frame Shaking Table Test

2014 ◽  
Vol 893 ◽  
pp. 597-601
Author(s):  
Guo Wang Meng ◽  
Jia Mei Zhou ◽  
Chuan Yi Sui ◽  
Qi Yan
Keyword(s):  
Reinforced Concrete ◽  
Failure Modes ◽  
Shaking Table Test ◽  
Plain Concrete ◽  
Fiber Reinforced Concrete ◽  
Shaking Table ◽  
Maximum Strain ◽  
Fiber Reinforced ◽  
Reinforced Concrete Frame ◽  
Maximum Acceleration

Two full scale frames were tested on a shaking table to investigate seismic performance and fracture mechanism of fiber reinforced concrete in contrast to the plain concrete. The information about acceleration response, the maximum strain value as well as the time to reach it, the typical strain - time curves and the crack development of two test frames were presented. Test results indicate that reinforced concrete did not crack during the test; the fiber reinforced concrete could better absorb or consume energy in the process of stress redistribution after peak acceleration; maximum strain and maximum acceleration did not occur at the same time; structure came into being deformation even failure when the seismic energy in the structure gone up to certain extent, and the dynamic failure would be their main failure modes.

scholarly journals Experimental Study on Dynamic Behavior of Unreinforced Masonry Walls

2013 ◽  
Vol 8 (2) ◽  
pp. 305-311 ◽  
Author(s):  
Taiki Saito ◽  
◽  
Luis Moya ◽  
Cesar Fajardo ◽  
Koichi Morita ◽  
...  
Keyword(s):  
Dynamic Behavior ◽  
Failure Mode ◽  
Shear Failure ◽  
Shaking Table Test ◽  
Unreinforced Masonry ◽  
Masonry Wall ◽  
Shaking Table ◽  
Masonry Walls ◽  
Plane Failure ◽  
Out Of Plane

The dynamic behavior of an unreinforced masonry wall is investigated through a shaking table test of two specimens. In order to represent a non-engineering one-story house, the first specimen consists of a Cshaped structure with masonry walls connected only at their ends. The second specimen is built to represent an upper story, so the C wall is connected at the top by a wooden diaphragm floor, and a weight is suspended onto it. The test results show each specimen exhibits different behaviors. In the first specimen, an out-of-plane failure mode governs. In the second specimen, a shear failure mode governs.

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