Browse > Article
http://dx.doi.org/10.7843/kgs.2020.36.11.157

A Study on the Model Test for Estimating Dynamic Vertical Load Added to Shallow Foundation for Machine  

Ha, Ik-Soo (Dept. of Civil Engrg., Kyungnam Univ.)
Yoo, Mintaek (Railroad Structure Research Team, Korea Railroad Research Institute)
Publication Information
Journal of the Korean Geotechnical Society / v.36, no.11, 2020 , pp. 157-165 More about this Journal
Abstract
At present, there are no clearly stated criteria or theories in calculating additional vertical dynamic loads that occur at the machine foundation due to vibration and reflecting them in the design at home and abroad. According to the domestic standard, although it is not a serious vibration condition, the additional dynamic load due to vibration is considered up to 100% of the static load. This is an extremely conservative design. The purpose of this study is to propose a model test method for evaluating the quantitative magnitude of additional dynamic loads that are generated at certain static loads due to vertical mechanical vibrations. As preliminary basic tests for the model tests, the test for evaluating the effects of reflective wave that may occur within a limited size soil box and the test for estimating the natural frequency of the devised model soil-foundation system were carried out. From the analysis of results for basic tests, a method to minimize the influence of the reflected wave was prepared, and the effect of the resonance of the model system was minimized during the model tests. After the basic tests, the main model tests were conducted. Through the proposed main test, the quantitative magnitude of additional dynamic loads caused by machine vibration on a shallow foundation for machine on medium dense sand foundations were evaluated. From the results of the model test, the feasibility of design applied at home and abroad was reviewed.
Keywords
Additional dynamic load; Machine foundation; Mechanical vibration; Model test; Shallow foundation;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Lee, J.S. (2014), "Estimation on 3-D Numerical Modeling of a Floasting Single Pile subjected to Machine Vibration", Master's Thesis, Kyungnam University (in Korean).
2 Arya, S.C., O'Neill, M.W., and Pincus, G. (1984), "Design of Structures and Foundations for Vibrating Machines", Gulf Publishing Company, Houston, Texas.
3 Baidya, D.K. and Muralikrishna, G. (2001), "Natural Frequency of Vibrating Foundations on Layered Soil System-An Experimental Investigation", International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics, Paper No.2.02.
4 Bhowmik, D., Baidya, D.K., and Dasgupta, S.P. (2016), "A Numerical and Experimental Study of Hollow Steel Pile in Layered Soil Subjected to Vertical Dynamic Loading", Soil Dynamics and Earthquake Engineering, 85, pp.161-165.   DOI
5 Boominathan, A. and Lakshmi, T. (2000), "Dynamic Characteristics of Pile Group under Vertical Vibration", The 12th World Conference on Earthquake Engineering, pp.1-8.
6 Ha, I.S. and Han, J.T. (2016), "Evaluation of the Allowable Axial Bearing Capacity of a Single Pile Subjected to Machine Vibration by Numerical Analysis", International Journal of Geo-Engineering, Vol.7, No.1, 22, pp.1-12.
7 Han, J.T., Kwon, S.Y., Ha, I.S., and Kim, U.G. (2013), "Evaluation on Bearing Capacity for Machine Foundation in Plant considering Dynamic Load", The 39th Conference Proceedings of the Korean Society of Civil Engineers, KSCE, pp.2775-2778 (in Korean).
8 KGS (2018), Manual of Foundation Design Criteria, Korean Geotechnical Society, pp.863-892 (in Korean).
9 Korea Institute of Construction Technology (2014), "Development of Evaluation Technology on Bearing Capacity of Foundation for Vibrating Machines in Plant", Research Report, KICT (in Korean).
10 Manna, B. and Baidya, D.K. (2010), "Dynamic Nonlinear Response of Pile Foundations under Vertical Vibration-theory Versus Experiment", Soil Dynamics and Earthquake Engineering, 30(6), pp.456-469.   DOI
11 Novak, M. and F. Grigg, R. (1976), "Dynamic Experiments with Small Pile Foundations", Canadian Geotechnical Journal, Vol.13, No.4, pp.372-385.   DOI