Abstract
Karst is a common geological condition in engineering construction. In order to study the influence of karst cave and boundary condition on the analysis of free field ground motion in karst area, viscoelastic artificial boundary was studied in free field ground motion analysis of karst region, a three-dimensional finite element model whose dimension is 1000 m × 1000 m × 500 m was set up, characteristics of ground motion in karst region were studied on the basis of viscoelastic artificial boundary, as well as the influence of karst cave on displacement, velocity and acceleration were considered. The results show that, natural frequencies of free field were decreased at different degrees after viscoelastic artificial boundary was adopted. Compared with the response of free field without karst cave, the variation trend of maximum displacement, maximum velocity and maximum acceleration were all spread around the karst cave, the biggest change of maximum displacement, maximum velocity and maximum acceleration appeared on the top of karst cave. Compared with spectrum curve of free field without karst cave, the amplitude difference of free field with karst cave was significant in low order frequency, and was opposite in high order frequency, the influence of karst cave on vertical direction is bigger than horizontal direction, which can provide reference for construction of karst region.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Yang, S., He, S., Meng, L., et al.: Research on earthquake-induced geological disasters in the karst area in Guangxi and methods for engineering-site preparation. China Earthq. Eng. J. 36(04), 790–796 (2014)
Yang, S., Meng, L., Wang, Y.: Research of acceleration change in karst area by earthquake. World Earthq. Eng. 31(03), 85–92 (2015)
Liu, J., Wang, Z.: 3D finite element analysis of large dynamic machine foundation considering soil-structure interaction. Eng. Mech. 19(3), 34–38 (2002)
Zhang, X., Li, X., Chen, G., et al.: An improved method of the calculation of equivalent nodal forces in viscous-elastic artificial boundary. Chin. J. Theor. Appl. Mech. 05, 1126–1135 (2016)
Du, X., Zhao, M., Wang, J.: A stress artificial boundary in fea for near-field wave problem. Chin. J. Theor. Appl. Mech. 38(1), 49–56 (2006)
Liao, Z., Liu, J.: Finite element simulation of wave motion-basic problems and conceptual aspects. Earthq. Eng. Eng. Vib. 9(4), 1–14 (1989)
Liu, J., Huan, Y., Li, J.: Application of artificial boundary and seismic input in general finite element software. Chin. J. Undergr. Space Eng. 7(2), 1774–1779 (2011)
Liu, J., Lu, Y.: A direct method for analysis of dynamic soil-structure interaction. China Civil Eng. J. 31(3), 55–64 (1998)
Gu, Y., Liu, J., Du, Y.: 3D consistent viscous-spring artificial boundary and viscous-spring boundary element. Eng. Mech. 24(12), 31–37 (2007)
Liu, J., Wang, Z., Du, X., et al.: Three-dimensional visco-elastic artificial boundaries in time domain for wave motion problems. Eng. Mech. 22(06), 46–51 (2005)
Zhao, R., Zhang, J., Liu, Z., et al.: Analysis of seismic wave problem based on visco-elastic artificial boundary under the ladder terrain. World Earthq. Eng. 31(03), 220–227 (2015)
Acknowledgement
This work was supported by National Natural Science Foundation of China (Grant No. 51068001 and 51368005), the Systematic Project of Guangxi Key Laboratory of Disaster Prevention and Structural Safety (2012ZDX04), and the Scientific Research Foundation of Guangxi University (Grant No. XBZ100762).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Bai, My., Wang, Hw., Shen, C., Xie, Kz. (2018). Study on Characteristics of Ground Motion in Karst Area Based on Viscoelastic Artificial Boundary. In: Zhang, D., Huang, X. (eds) Proceedings of GeoShanghai 2018 International Conference: Tunnelling and Underground Construction. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0017-2_20
Download citation
DOI: https://doi.org/10.1007/978-981-13-0017-2_20
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-0016-5
Online ISBN: 978-981-13-0017-2
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)