Selection of Artificial Boundary Condition on Soil-Structure Dynamic Interaction

Numerical simulation is an important method to study the structural vibration response. And artificial boundary conditions will directly affect the reliability of numerical simulation results. While when we conduct numerical simulation of vibration, it is often assumed the input surface to be a fixed boundary. The purpose of this paper is to make a study on rationality of this method by the use of simulation on a two-dimensional homogeneous elastic half-space model and a soil-structure dynamic interaction model. The results show that: when fixed boundary used, after the wave reflected to the fixed boundary, it couldn’t leave the calculation region and will reflects back into the calculation region again; when viscous boundary used, the energy will be absorbed by the bottom boundary when the wave achieved the viscous boundary. It simulates the real situation that the wave goes through boundary surface into the infinite medium. So, when carrying out numerical simulation on structural dynamic analysis, the selection of fixed boundary is inclined to an incorrect result, while the select of viscous boundary is more accurate and reasonable.

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The Research on Soil-Structural Dynamic Interaction

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.90-93.2292 ◽

2011 ◽

Vol 90-93 ◽

pp. 2292-2296

Author(s):

Xiao Li Dong ◽

Jun Hong Hao ◽

Yan Zhen Wang ◽

Rui Hua Wang

Keyword(s):

Soil Structure ◽

Dynamic Interaction ◽

Structural Dynamic ◽

Advantages And Disadvantages ◽

Structure Dynamic ◽

At Home

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The Research Methods of Soil and Structural Dynamic Interaction

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.250-253.2068 ◽

2011 ◽

Vol 250-253 ◽

pp. 2068-2073

Author(s):

Xiao Li Dong

Keyword(s):

Seismic Response ◽

Soil Structure ◽

Underground Structure ◽

Dynamic Interaction ◽

Subway Station ◽

Underground Structures ◽

Structural Dynamic ◽

Advantages And Disadvantages ◽

Urban Construction ◽

Structure Dynamic

This paper will introduce the basic methods of soil-structure dynamic interaction at home and abroad, and analysis the advantages and disadvantages of these methods. Finally, the paper will put forward opinions on the research tendency of soil-structure dynamic interaction. With the development of urbanization, the urban population, planning area and urban environment are faced with tremendous stress, so developing and utilizing the underground space becomes the concerns of many cities. In recent decades, the underground structure has been widely used in urban construction, transportation, national defense engineering, and hydraulic engineering and so on. Especially in the urban construction, with underground railway which has been seemed as the large-capacity backbone and fast public transport system has become an important issue of urban passenger traffic solution. In our country, there are still large potential in developing and utilizing the underground structure and the structure forms will become more and more complicated. China is a strong and frequent earthquake country, the earthquake-proof problems about the underground structures such as Long-span subway station has become city astigmatic engineering and the important research content on disaster prevention and mitigation. These researches can ensure the safe use of underground structures and reduce natural disasters to humankind. To the subway station and the tunnel structure, soil characteristics significantly influence the structure seismic response and destruction features. In seismic response process, the overburden of gravitational can greatly affect on the structural seismic response. The solution to the underground structure seismic problem should focus on two aspects: on one hand we should focus on the research of soil-structure dynamic interaction; on the other hand, we should deal with soil’s half-limitlessness simulation problem.

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Improvement of Laminar Shear Container for Shaking Table Test

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.588-589.1889 ◽

2012 ◽

Vol 588-589 ◽

pp. 1889-1893

Author(s):

Hai Feng Sun ◽

Li Ping Jing ◽

Qing Hai Wei ◽

Xian Chun Meng

Keyword(s):

Soil Structure ◽

Shaking Table Test ◽

Boundary Effect ◽

Underground Structure ◽

Dynamic Interaction ◽

Shaking Table ◽

Important Method ◽

Model Soil ◽

Structure Dynamic ◽

Laminar Shear

Shaking table test is an important method to study on the problem of the soil-structure dynamic interaction. The property of the soil container directly affects the accuracy of the result. A laminar shear container was designed for shaking table test. And a shaking table test on soil-underground structure dynamic interaction which structure lay in clay was conducted. The results of the test show that the container eliminated the boundary effect when the dynamic load was applied in only one horizontal direction. Meanwhile, the stiffness of the soil container could be changed according to the change of the model soil, which is applicable to decrease the boundary effect.

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Experimental investigation of the seismic effects during blasting works

MATEC Web of Conferences ◽

10.1051/matecconf/202031300019 ◽

2020 ◽

Vol 313 ◽

pp. 00019 ◽

Cited By ~ 1

Author(s):

Daniel Papán ◽

Zuzana Papánová

Keyword(s):

Experimental Investigation ◽

Dynamic Analysis ◽

Dynamic Load ◽

Soil Structure ◽

Seismic Waves ◽

Experimental Studies ◽

Dynamic Interaction ◽

Seismic Effects ◽

Structure Dynamic ◽

Structural Failures

The interested part of dynamic analysis is the blasting work effects propagation through soil. This type of the dynamic load can be significant when the soil structure dynamic interaction hasn´t favourable conditions. It can cause structural failures on buildings. The main aim of the paper is to investigate how we can estimate the magnitudes of the seismic waves during blasting works. The results are based on experimental studies.

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