scholarly journals Simulation of Earthquake Response of High Building with Soil-structure System

2012 ◽  
Author(s):  
Yun ZHAO ◽  
Hua WEI ◽  
Haijun WANG
Keyword(s):  
Soil Structure ◽  
Earthquake Response ◽  
Structure System ◽  
High Building

scholarly journals Dynamic Analysis of Partially Embedded Structures Considering Soil-Structure Interaction in Time Domain

2011 ◽  
Vol 2011 ◽  
pp. 1-23 ◽  
Author(s):  
Sanaz Mahmoudpour ◽  
Reza Attarnejad ◽  
Cambyse Behnia
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Response ◽  
Time Domain ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Structure System ◽  
Structure Interaction ◽  
Scaled Boundary Finite Element ◽  
Element Method

Analysis and design of structures subjected to arbitrary dynamic loadings especially earthquakes have been studied during past decades. In practice, the effects of soil-structure interaction on the dynamic response of structures are usually neglected. In this study, the effect of soil-structure interaction on the dynamic response of structures has been examined. The substructure method using dynamic stiffness of soil is used to analyze soil-structure system. A coupled model based on finite element method and scaled boundary finite element method is applied. Finite element method is used to analyze the structure, and scaled boundary finite element method is applied in the analysis of unbounded soil region. Due to analytical solution in the radial direction, the radiation condition is satisfied exactly. The material behavior of soil and structure is assumed to be linear. The soil region is considered as a homogeneous half-space. The analysis is performed in time domain. A computer program is prepared to analyze the soil-structure system. Comparing the results with those in literature shows the exactness and competency of the proposed method.

Internal Explosions in Embedded Concrete Pipes

2011 ◽  
Vol 82 ◽  
pp. 452-457 ◽  
Author(s):  
Pamela Bonalumi ◽  
Matteo Colombo ◽  
Marco di Prisco
Keyword(s):  
Soil Structure ◽  
Soft Soil ◽  
High Energy ◽  
Radial Acceleration ◽  
Structure System ◽  
Concrete Pipe ◽  
Pressure Time ◽  
Time Histories ◽  
Solid Explosives ◽  
Thin Plastic

Blast tests on a full-scale concrete pipe embedded in soft soil were carried out to evaluate the behavior of the soil-structure system under the internal detonation of high-energy solid explosives. Two different stages were considered: the former focused on the detonation of a low entity charge within the pipe to maintain the concrete in the elastic regime and the latter concerned with adopting larger quantities of explosive to produce cracking and failure of the structure. Cylindrical charges ranging from few grams to hundreds of grams of a high-energy solid explosive were investigated and different tests were performed for each quantity by inserting the explosive charge in a cardboard cylinder hanged up in the middle of the pipe central segment by means of three thin plastic wires. The following quantities were measured in different sections along the pipe: side-on and reflected pressure-time histories at the inner surface of the structure, pipe radial acceleration, peak particle acceleration of the surrounding soil by means of accelerometers placed at different distances and depths from the section where the explosion occurred. The experimental results obtained during the performed blast tests are thus analyzed to understand the soil-structure system behavior under such fast transient dynamic phenomena.

Enhancement of FrontISTR for analyzing earthquake response of large-scale soil-structure interaction model

2016 ◽  
Vol 2016.29 (0) ◽  
pp. F01-1
Author(s):  
TAKAHASHI Yoshiyuki ◽  
MORITA Naoki ◽  
Toshihide SAKA ◽  
Gaku HASHIMOTO ◽  
Hiroshi OKUDA ◽  
...  
Keyword(s):  
Soil Structure ◽  
Large Scale ◽  
Interaction Model ◽  
Soil Structure Interaction ◽  
Earthquake Response ◽  
Structure Interaction

Use of Simple Model to Predict the Forced Vibration Responses of Hualien Model Structure

1999 ◽  
Vol 15 (3) ◽  
pp. 117-126
Author(s):  
Cheng-Hsing Chen ◽  
Shuh-Hua Yang
Keyword(s):  
Simple Model ◽  
Dynamic Response ◽  
Forced Vibration ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Structure System ◽  
Structure Interaction ◽  
Vibration Responses ◽  
Mat Foundation ◽  
Vibration Tests

AbstractThis paper uses a simple model, the lumped single-degree-of-freedom system on rigid mat foundation, to investigate the effects of soil-structure interaction on the dynamic response of a soil-structure system. Based on that, the key parameters affecting the natural frequency of a soil-structure system can be easily identified and be used to assess the effects of soil-structure interaction. Accordingly, it was used to simulate the dynamic response of the forced vibration tests conducted at Hualien, Taiwan. Results obtained show that the simple model can predict the field responses very satisfactorily.

Finite-Infinite Element Dynamic Analysis of Pile-Soil-Structure System Considering the Change of Groundwater Level

2011 ◽  
Vol 250-253 ◽  
pp. 2291-2295
Author(s):  
Wei Hu ◽  
Guang Fan Li ◽  
Juan Du
Keyword(s):  
Dynamic Characteristics ◽  
Groundwater Level ◽  
Soil Structure ◽  
Horizontal Displacement ◽  
Element Model ◽  
Geological Condition ◽  
Shearing Stress ◽  
Structural Dynamic ◽  
Structure System ◽  
Infinite Element

The rise of groundwater level can reduce soil’s effective stress and destroy it’s structure. As a result, the dynamic characteristics of pile-soil-structure system will be changed remarkably. In this paper, a structural dynamic model was used for saturated loess, and the finite-infinite element model of pile-soil-structure system was established to study the groundwater level’s influence on the system’s dynamic characteristics, which included the distributions of pile section’s shearing stress, horizontal displacement and acceleration. The results indicated that, the height of groundwater level did not change the distribution shapes of shearing stress, horizontal acceleration, but had effect on their values. To the top section’s shearing stress and horizontal displacement, there almost had a same dividing groundwater level. When groundwater level was higher than that one, the shearing stress and horizontal displacement were increasing with the rising of groundwater level, but the regulations were just opposite when groundwater level under that height. The study also shown that, to a determinate geological condition and pile foundation, there has a dividing groundwater level, and which is also the most secure level to the pile-soil-structure system. The conclusion can give theoretic instruction for the safety evaluation of pile-soil-structure system around water area.

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