Development of any port in any country is a matter of great concern and a big challenge involving the development of navigational channels, port basin with turning circles, breakwaters, and other onshore facilities. Breakwaters essentially embankments created on seabed floor, are one of the most important and costly civil engineering structures that save the port and the traffic from the effect of wave action created in the sea or ocean. Stability of this embankment becomes very critical under the various applied operating loads and environmental conditions in varying combinations. Its analysis in static and seismic conditions becomes a challenging geotechnical problem due to the presence of water. The problem becomes all the more complex owing to the assumptions of some geotechnical parameters in view of the non-existing values of the site. Similarly, use of different commercial software leads to all the more variation of the factor of safety as well as the most critical circle when obtained by use of finite element method, Limit Equilibrium (LE) method, Morgenstern–Price method or for that matter of fact any other method accepted in various codal provisions. The paper shows analysis of a typical breakwater section subjected to static loads as well as dynamic loads (0.5 g) simulating earthquake shaking. It is observed that for single soil section or layered soil sections, the factor of safety are almost reasonably in resemblance.

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Static and Dynamic Slope Stability Behavior of Breakwaters: Comparative Study of Software Implementation

  • Rupesh Parmar,
  • Lalit S. Thakur,
  • Siddharth Ambaliya,
  • Jaykumar Shukla

摘要

Development of any port in any country is a matter of great concern and a big challenge involving the development of navigational channels, port basin with turning circles, breakwaters, and other onshore facilities. Breakwaters essentially embankments created on seabed floor, are one of the most important and costly civil engineering structures that save the port and the traffic from the effect of wave action created in the sea or ocean. Stability of this embankment becomes very critical under the various applied operating loads and environmental conditions in varying combinations. Its analysis in static and seismic conditions becomes a challenging geotechnical problem due to the presence of water. The problem becomes all the more complex owing to the assumptions of some geotechnical parameters in view of the non-existing values of the site. Similarly, use of different commercial software leads to all the more variation of the factor of safety as well as the most critical circle when obtained by use of finite element method, Limit Equilibrium (LE) method, Morgenstern–Price method or for that matter of fact any other method accepted in various codal provisions. The paper shows analysis of a typical breakwater section subjected to static loads as well as dynamic loads (0.5 g) simulating earthquake shaking. It is observed that for single soil section or layered soil sections, the factor of safety are almost reasonably in resemblance.