scholarly journals Experimental investigation of the seismic effects during blasting works

2020 ◽  
Vol 313 ◽  
pp. 00019 ◽  
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.

Numerical Simulation of Soil-Structure Dynamic Interaction System under Blasting Load

2012 ◽  
Vol 204-208 ◽  
pp. 303-307
Author(s):  
Wen Le Gao ◽  
Bo Huang ◽  
Chen Wang
Keyword(s):  
Earthquake Engineering ◽  
Soil Structure ◽  
Seismic Waves ◽  
Dynamic Interaction ◽  
Earthquake Resistance ◽  
Blasting Vibration ◽  
Engineering Structures ◽  
Finite Element Software ◽  
Structure Dynamic ◽  
The Impact

Soil-Structure Dynamic Interaction (SSDI) is an important content of earthquake engineering and earthquake resistance of engineering structures. However, very few researches have been done on Pile-Soil-Structure Interaction (PSSI) under blasting vibration so far. In this paper, large finite element software ANSYS/LS-DYNA is used to simulate PSSI under blasting vibration. Research shows that the top displacement, acceleration and shear stress of piles are larger than the tip of piles, and the distribution laws are inverted triangles. What’s more, PSSI system sustains its vibration after the impact of blasting seismic waves, but the effect of the vibration is smaller than the blasting seismic waves does, which roughly conform to the measured results. These conclusions could provide theory basis for earthquake resistance of engineering structures and design of pile foundation.

Improvement of Laminar Shear Container for Shaking Table Test

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.

The Research on Soil-Structural Dynamic Interaction

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

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.

Selection of Artificial Boundary Condition on Soil-Structure Dynamic Interaction

2010 ◽  
Vol 450 ◽  
pp. 498-501 ◽  
Author(s):  
Hai Feng Sun ◽  
Li Ping Jing ◽  
Xian Chun Meng
Keyword(s):  
Numerical Simulation ◽  
Soil Structure ◽  
Dynamic Interaction ◽  
Artificial Boundary ◽  
Structural Dynamic ◽  
Fixed Boundary ◽  
Calculation Region ◽  
Structure Dynamic ◽  
Viscous Boundary ◽  
Selection Of

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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