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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Extreme Loads & Disasters

Dynamic response analysis of new steel shed-tunnel structure under rock fall impact

< Table of Contents for Extreme Loads & Disasters
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Extreme Loads & Disasters
  • Pages: 5
  • Title: Dynamic response analysis of new steel shed-tunnel structure under rock fall impact
  • Author(s): Chang Wu, Bao-long Gou, Xiu-li Wang, Ya-xiong Liang
  • Keywords: steel shed-tunnel structure, dynamic response, rock fall impact, numerical models
Abstract
The conventional concrete rock-shed has some disadvantage, such as massive foundation and high weight, so constructing such a structure is usually very difficult and expensive. To overcome the construction difficulty and reduce costs, a new type of steel shed-tunnel structure was proposed. It has good economic benefit and social benefit. In order to analyze the dynamic response of this structure under rock fall impact, the model is established by using the ANSYS / LS-DYNA program. The dynamic stress, dynamic displacement and acceleration were analyzed. The results show that the flexible steel shed structure can generate large deformation to absorb impact energy. As the main body in the force, the steel arch beam mainly bear bending moment. The steel shed-tunnel structure has remarkable superiority in stress, construction, environmental, and economy etc. and hence is suitable for the rock-fall protection.

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