Dynamic behavior of reinforced slopes: horizontal acceleration response

2010 ◽  
Vol 17 (4) ◽  
pp. 207-219 ◽  
Author(s):  
C.-C. Huang ◽  
J.-C. Horng ◽  
W.-J. Chang ◽  
S.-Y. Chueh ◽  
J.-S. Chiou ◽  
...  
Keyword(s):  
Dynamic Behavior ◽  
Acceleration Response ◽  
Horizontal Acceleration ◽  
Reinforced Slopes

Effects of Adjacent Ground Treatment on Site Seismic Response

2011 ◽  
Vol 90-93 ◽  
pp. 1576-1580
Author(s):  
Gang Ge ◽  
Jian Min Liu
Keyword(s):  
Ground Motion ◽  
Single Layer ◽  
Soil Improvement ◽  
Soil Reinforcement ◽  
The Other ◽  
Acceleration Response ◽  
Horizontal Acceleration ◽  
Ground Treatment ◽  
Single Block ◽  
Adjacent Soil

The effect of adjacent soil improvement on ground motion is studied using finite element method, when seismic wave is introduced from the single layer on bedrock. The influence of ground motion on soil reinforcement is analyzed; the impacts of the reinforcement zone width, depth, elastic modulus, and the soil improvement interval on response of the ground motion are also investigated. Study shows: for the same site, when the distance between two adjacent foundation consolidation interval is less than 3 to 4 times the width of the reinforcement area, the interaction acceleration response amplitude of various points on the surface of the two adjacent reinforcement area increased significantly than the single block; within the interval , increasing one of the two adjacent foundation’s width, depth, and the other foundation surface, the horizontal acceleration response will Subsequently enlarged; when the interval between the reinforcement area is greater than the range, this effect is negligible.

Dynamic Behavior of the Five Storied Pagoda Under the Earthquake and the Wind

2009 ◽  
Author(s):  
Tadashi Mikoshiba ◽  
Chikahiro Minowa ◽  
Toshio Chiba
Keyword(s):  
Dynamic Behavior ◽  
Dynamic Characteristics ◽  
The Other ◽  
Wind Pressure ◽  
Frame Structure ◽  
Central Axis ◽  
Seismic Load ◽  
Strong Wind ◽  
Acceleration Response ◽  
Acceleration Data

Five storied pagoda is built of wood and is known as a high earthquake proof structure. The pagoda is composed of the frame and the center column. The center column is structurally independent of the frame structure. Many researchers have mainly been interested in its dynamic characteristics under the earthquake. They have focused on the acceleration response of the pagoda. This time, we observed not only its dynamic characteristics under seismic load but also under strong wind load. We focused on the displacement response of the pagoda. By integrating the acceleration data twice, the displacement of the structure was obtained. Under low level earthquake, the pagoda swayed about the central axis of the structure. On the other hand, the pagoda was statically deformed by the wind pressure and swayed in the deformed central axis of the structure. The dynamic behavior of the pagoda in the wind is distinctly different from that of the earthquake.

The Test Study of Bus Engine Mounting Device Dynamic Behavior in Engine’s Idling Status

2011 ◽  
Vol 105-107 ◽  
pp. 462-465
Author(s):  
Wei Feng Zhang ◽  
Xin Gang Zhang ◽  
Chuan Shuai Fan ◽  
Wei Liu ◽  
Jun Jie Chen
Keyword(s):  
Signal Processing ◽  
Energy Transfer ◽  
Transfer Function ◽  
Fixed Points ◽  
Dynamic Behavior ◽  
Processing Technology ◽  
Vibration Source ◽  
Acceleration Response ◽  
Transfer Characteristics ◽  
Test Study

To investigate the main vibration source which caused the serious vibration in passenger ride area of one type bus under its engine’s idling status, the effect of isolated vibration and energy transfer characteristics of the engine mounting block are tested and analyzed by modern signal processing technology in this paper. By the measurement of the acceleration response signals of engine’s exciting points and the fixed points of engine’s mounting on its chassis, the transfer function of engine’s mounting block under engine’s idling status was obtained. The calculation and analyzed results draw a conclusion that: the stiffness of the engine’s front mounting is too hard, and the vibration of the engine in idling status was amplified obviously. And then the harshness of the studied bus could be improved according to this conclusion.

Parallel Computing Traveling Wave Effect on the Seismic Response of 3D Valley Topography Site under Long-Period Seismic Excitation

2010 ◽  
Vol 163-167 ◽  
pp. 3904-3909
Author(s):  
Wei Zhang ◽  
Min Wei Zhu ◽  
Tao Tao Shan
Keyword(s):  
Parallel Computation ◽  
Traveling Wave ◽  
Seismic Waves ◽  
Three Dimensional ◽  
Vertical Acceleration ◽  
Wave Excitation ◽  
Acceleration Response ◽  
Horizontal Acceleration ◽  
Long Period ◽  
Response Increase

In this paper, three typical bedrock long-period seismic waves and two commonly used waves were selected for three dimensional seismic responses parallel computation of a valley topography site under uniform excitation and traveling wave excitation. The equivalent-linear analysis method was used in simulation of soil’s non-linear properties. Computation results showed that horizontal acceleration response increase and vertical acceleration response decrease under long-period seismic wave excitation compared with those under commonly used waves excitation. When considering wave traveling effect, the horizontal acceleration response decrease and the vertical acceleration response increase. The conclusions are useful for relevant engineering projects. Parallel computation was also performed to raise computational efficiency.

Research on the Seismic of a Large Span Roof

2013 ◽  
Vol 838-841 ◽  
pp. 424-427
Author(s):  
Hong Wei Gao ◽  
Yong Yao ◽  
Yun Peng Chu ◽  
Dai Guo Chen
Keyword(s):  
Real Time ◽  
Horizontal Displacement ◽  
Vertical Displacement ◽  
Time Response ◽  
Vertical Acceleration ◽  
Acceleration Response ◽  
Large Span ◽  
Displacement Response ◽  
Horizontal Acceleration

By calculating a large span roof structures, get the intrinsic mode and real-time response of the structural under earthquake. The results showed that, the vertical acceleration response of structure is smaller than the horizontal acceleration response under EL-Centro wave and Tangshan wave. The vertical acceleration response is greater than the horizontal acceleration response under Lanzhou wave. The vertical displacement response of structure is greater than the horizontal displacement response under earthquake. Roof Destructed before the steel skeleton damage.

scholarly journals New Zealand seismic hazard analysis

1985 ◽  
Vol 18 (4) ◽  
pp. 313-322
Author(s):  
T. Matuschka ◽  
K. R. Berryman ◽  
A. J. O'Leary ◽  
G. H. McVerry ◽  
W. M. Mulholland ◽  
...  
Keyword(s):  
New Zealand ◽  
Seismic Hazard ◽  
Seismic Design ◽  
Hazard Analysis ◽  
Response Spectra ◽  
Seismic Hazard Analysis ◽  
Return Periods ◽  
Acceleration Response ◽  
Ground Shaking ◽  
Horizontal Acceleration

The results of a seismic hazard analysis for the country by the Seismic Risk Subcommittee (SRS) of the Standards Association are presented. The SRS was formed in 1979 to advise the Standards Association Loadings Code Amendments Committee on the frequency and level of earthquake ground shaking throughout New Zealand. Results of the SRS study are in terms of estimates of five percent damped horizontal acceleration response spectra for 50, 150, 450 and 1000 year return periods. It is intended that these results will form the basis for developing seismic design response spectra for the proposed new Loadings Code (NZS 4203).

scholarly journals Seismic Response of Rock Slopes with the Anchor Cable in Centrifuge Modeling Tests

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Yong Nie ◽  
Yufei Zhao ◽  
Xiaogang Wang ◽  
Linhao Li ◽  
Hongtao Zhang
Keyword(s):  
Seismic Response ◽  
Rock Slope ◽  
Centrifuge Modeling ◽  
Amplification Coefficient ◽  
Rock Slopes ◽  
Acceleration Response ◽  
Structural Plane ◽  
Horizontal Acceleration ◽  
Anchor Cable ◽  
Acceleration Amplification

In order to study the seismic response of the rock slopes with the anchor cable, centrifuge modeling tests were performed on concrete slope models. Different seismic loadings were performed to investigate the horizontal acceleration response, the rock slope displacement, and the stress of anchor cables. The results show that the horizontal acceleration response is obviously amplified by a rock slope. Under the same conditions, the higher the seismic intensity is, the larger the acceleration amplification coefficient will be. Anchor cable can effectively reduce the acceleration amplification effect of the slope. For the slope with a structural plane, the anchor cable at the structural plane is stressed greatly during the seismic action, and the strength of anchor cables near the expected structural plane is important.

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