Research on Soil-Underground Structure Interaction of Topography Variation in Local Site

2013 ◽  
Vol 368-370 ◽  
pp. 1701-1709
Author(s):  
Tian Ding Guan ◽  
Jie Cui ◽  
Zhi Yong Ouyang
Keyword(s):  
Response Spectrum ◽  
Underground Structure ◽  
Shaking Table ◽  
Test Results ◽  
Structure Interaction ◽  
Local Site ◽  
Table Model ◽  
Acceleration Response Spectrum ◽  
Comparison Of Tests ◽  
Natural Dynamic

Base on the studies of soil-underground structure interaction of topography variation, large shaking table model tests are conducted, and test results are analyzed contrastively. By considering the influences of earthquake type, vibration amplitude ,unidirectional or bidirectional inputs etc., natural dynamic characteristics, acceleration response, spectrum characteristics and vibration amplification effect of site soil and underground structure are studied, and soil-underground structure interaction is explored, according to methods of time and frequency domain combined, and comparison of tests no topography variation. Significant conclusions have been got, which can be served as a certain basis and reference for underground structure seismic design with local site of topography variation.

Study of Pushover Analysis on RC Framed Structure with Underground Structure Considering the Effects of Soil Structure Interaction

2020 ◽  
Vol 8 ◽  
pp. 22-29
Author(s):  
Nasala Dongol ◽  
Prachand Man Pradhan ◽  
Suman Manandhar
Keyword(s):  
Soil Structure ◽  
Response Spectrum ◽  
Underground Structure ◽  
Pushover Analysis ◽  
Standard Penetration Test ◽  
Soil Structure Interaction ◽  
Base System ◽  
Building Site ◽  
Structure Interaction ◽  
Fixed Base

This study states that the effects of soil structure interaction on the Reinforced Concrete (RC) framed structures is directly influenced by the soil properties of the site. Here, one preexisting structure is taken for the study. The building is a hospital building with two underground basements. Taking into account the actual soil condition of building site, this study provides idea on the soil structure interaction on the structure The properties of springs are calculated from different standard penetration test (SPT) values, Poisson’s ratio and elasticity of soil along the depth of the soil. Entire soil-foundation-structure system is modelled and analyzed using spring approach. Static analysis, response spectrum analysis and pushover analysis (PA) are done in order to find the variations in natural periods, base shears and deflections of the structures by incorporating soil flexibility as compared to structures with conventional fixed base. Pushover analysis is done to evaluate the performance of the structure when modelled in fixed base and spring base system.

Computer simulation of the dynamic layered soil–pile–structure interaction system

2005 ◽  
Vol 42 (3) ◽  
pp. 742-751 ◽  
Author(s):  
Xilin Lu ◽  
Peizhen Li ◽  
Bo Chen ◽  
Yueqing Chen
Keyword(s):  
Finite Element Analysis ◽  
Computer Simulation ◽  
Finite Element ◽  
Simulation Analysis ◽  
Shaking Table ◽  
Element Analysis ◽  
Finite Element Program ◽  
Structure Interaction ◽  
Interaction System ◽  
Table Model

A three-dimensional finite element analysis of the soil–pile–structure interaction system is presented in this paper. The analysis is based on data from shaking table model tests made in the State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, China. The general finite element program ANSYS is used in the analysis. The surface-to-surface contact element is taken into consideration for the nonlinearity state of the soil–pile interface, and an equivalent linear model is used for soil behavior. A comparison of the results of the finite element analysis with the data from the shaking table tests is used to validate the computational model. Furthermore, the reliability of the test result is also verified by the simulation analysis. It shows that separation, closing, and sliding exist between the pile foundation and the soil. The distribution of the amplitude of strains in the pile, the amplitude of contact pressure, and the amplitude of sliding at the soil–pile interface are also discussed in detail in this paper.Key words: soil–pile–structure interaction, shaking table model test, computer simulation, ANSYS program.

Dynamic Responses of RC Underground Subway Station and Soil during the Strong Earthquake

2011 ◽  
Vol 194-196 ◽  
pp. 2018-2023
Author(s):  
Jin Bian ◽  
Lian Jin Tao ◽  
Wen Pei Wang ◽  
Bo Zhang
Keyword(s):  
Underground Structure ◽  
Time History ◽  
Side Wall ◽  
Relative Displacement ◽  
Shaking Table ◽  
Dynamic Responses ◽  
Subway Station ◽  
Rc Structures ◽  
Underground Subway Station ◽  
Table Model

Underground subway RC structures suffered significant damage during many earthquakes, so it is important to study the seismic behavior on RC subway structure. The shaking table model test is made of the Beijing typical subway station structure. In this article, the test is introduced briefly; then, the acceleration history curves are analyzed. By the test, it is found that the interaction exits between structure and soil. Under the low intensity earthquake, the underground structure will exert a very small influence on soil and vibrates with soil; under the high intensity earthquake, the soil will exert a large thrust on the underground structure and the relative displacement exists between them. Moreover, At the bottom of the structure side wall, the peak acceleration is larger than it in soil around the place, and at the top and middle of the structure side wall, the peak accelerations are smaller than them in soil around the place; with the depth increase, decrease the peak value, the excellence frequency and its amplitude of the acceleration time history.

Experimental Instruments and Results’ Analysis of a Shaking Table Model Test for a Complex High-Rise Building

2013 ◽  
Vol 671-674 ◽  
pp. 1475-1479
Author(s):  
Yue Chen
Keyword(s):  
Model Test ◽  
Experimental Studies ◽  
Ground Level ◽  
Shaking Table ◽  
Test Results ◽  
Lateral Loads ◽  
Paper Test ◽  
High Rise ◽  
Table Model ◽  
Shaking Table Model Test

Standing 250m above the ground level, the tower employs a complicated modern tall building system that involves the use of a reinforced core, two strengthened trusses and eight composite (concrete encased steel) mega-columns in the exterior perimeter of the building to resist vertical and lateral loads. A shaking table model test was carried out according to owner’s commission due to its complexity and the requirement of the Chinese Design Codes. In this paper, test equipments and test results were analyzed and some conclusions were given. The method applied in this model test will be helpful to other similar experimental studies.

Shaking Table Model Test of Loess Tunnel Structure under Rainfall

2021 ◽  
Author(s):  
Xinhai Zhou ◽  
Xuansheng Cheng ◽  
Lei Qi ◽  
Ping Wang ◽  
Shaofeng Chai ◽  
...  
Keyword(s):  
Model Test ◽  
Shaking Table ◽  
Tunnel Structure ◽  
Table Model ◽  
Shaking Table Model Test
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