Planilha computacional para o cálculo dos esforços em estacas inclinadas de pontes pelo método de Nökkentved

Abstract

Among the several methods for the calculation of reinforced concrete structures, one of the most used is the Nökkentved Method to design inclined piles. In this perspective, in order to facilitate the calculation of the forces acting on each of the inclined piles under a pile cap, this work developed a spreadsheet - written in Microsoft Office Excel software - that clarifies the calculation steps used in the Nökkentved Method and automates the calculation of the final result of the forces. Initially, notions about reinforced concrete structures, pile caps, and inclined piles were introduced. Afterwards, the Nökkentved calculation method was explained through its equations and load analysis. After the theoretical framework, the initial information of the computer spreadsheet is presented. The user is informed about the data that must be supplied to the program in order to automate the calculation of stresses. Next, each calculation step performed by the spreadsheet is shown and points of analysis and references that must be adopted for the correct operation of the program are observed. To better understand some steps, figures with examples applied directly to the spreadsheet are used. In this way, the work proposes to facilitate the day to day of engineers who use the Nökkentved Method as a means of arriving at the design of structures. Finally, the spreadsheet was validated by comparison with manual examples.