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Appl. Sci. 2017, 7(2), 201; doi:10.3390/app7020201

Preliminary Study on the Damping Effect of a Lateral Damping Buffer under a Debris Flow Load

State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China
School of civil engineering, Southwest JiaoTong University, Chengdu 610031, China
Author to whom correspondence should be addressed.
Academic Editors: Gangbing Song, Steve C.S. Cai and Hong-Nan Li
Received: 29 December 2016 / Revised: 13 February 2017 / Accepted: 13 February 2017 / Published: 20 February 2017
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Simulating the impact of debris flows on structures and exploring the feasibility of applying energy dissipation devices or shock isolators to reduce the damage caused by debris flows can make great contribution to the design of disaster prevention structures. In this paper, we propose a new type of device, a lateral damping buffer, to reduce the vulnerability of building structures to debris flows. This lateral damping buffer has two mechanisms of damage mitigation: when debris flows impact on a building, it acts as a buffer, and when the structure vibrates due to the impact, it acts as a shock absorber, which can reduce the maximum acceleration response and subsequent vibration respectively. To study the effectiveness of such a lateral damping buffer, an impact test is conducted, which mainly involves a lateral damping buffer attached to a two-degree-of-freedom structure under a simulated debris flow load. To enable the numerical study, the equation of motion of the structure along with the lateral damping buffer is derived. A subsequent parametric study is performed to optimize the lateral damping buffer. Finally, a practical design procedure is also provided. View Full-Text
Keywords: debris flow; shock absorbers; buffer; impact test; numerical simulation; parametric study debris flow; shock absorbers; buffer; impact test; numerical simulation; parametric study

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Lu, Z.; Yang, Y.; Lu, X.; Liu, C. Preliminary Study on the Damping Effect of a Lateral Damping Buffer under a Debris Flow Load. Appl. Sci. 2017, 7, 201.

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