Comparision between Optimization and Conventional Catilever Retaining Wall by using Optimtool in Matlab
Sable K. S.1, Patil Archana A.2
1Sable K.S., Civil Engineering Department, Pune University/Sahyadri College of Engineering, Alephata, Pune, India.
2Patil Archana A, Civil Engineering Department, Pune University, Amrutvahini College of Engineering, Sangamner, Pune, India.
Manuscript received on July 17, 2012. | Revised Manuscript received on August 25, 2012. | Manuscript published on August 30, 2012. | PP: 255-261 | Volume-1 Issue-6, August 2012.  | Retrieval Number: F0677081612/2012©BEIESP

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Abstract: Optimization of concrete retaining walls is an important task in geotechnical and structural engineering. However other than stability considerations very often in such design the settlement aspects is neglected. As such, attention to various aspects of geotechnical engineering design needs to be considered. However, consideration of all these aspects makes the design complicated. To economize the cost under such situation needs to vary the dimensions of the wall several times making it very tedious and monotonous. As it is extremely difficult to obtain a design satisfying all the safety requirements, it is necessary to cast the problem as one of the mathematical non linear programming techniques. A program is developed for analysis and designing low-cost or low-weight cantilever reinforced concrete retaining walls with and without base shear key in matlab for optimtool. The optimtool is used to find the minimum cost and weight for concrete retaining walls. Illustrative cases of retaining wall are solved, and their results are presented and discussed by using Interior point method from optimtool. The comparison between the conventional design from known designer and optimum cost and weight values which are observed from optimtool shows effectively by cost and weight minimization model and graph. The optimum design formulation allows for a detailed sensitivity analysis to be made for variation in top thickness of stem, surcharge load and internal angle of friction with different height.
Keywords: Optimtool, Optimization, Minimum cost, Interior point method,