Abstract
Abstract This work studies the column-base connection by external socket in precast structures. A parametric study of the geometric characteristics of the external socket base with smooth interface is presented. In this parametric study, the consumption of concrete and steel are analyzed. The column cross section, the embedded length of the column in the socket base and the thickness of the wall of the socket base were the variables considered in this study. It was observed that with the increase of the embedded length, the minimum cross section of the main horizontal reinforcement reduces. With this modification, the walls of the socket base that are perpendicular to the direction of the applied loads presented a reduction of their stiffness. Besides the parametric study, this paper presents a verification model. This part of the study shows the possibility to generate abacuses that simplifies the project of the socket base foundation. Moreover, a comparative analysis becomes easier to be accomplished
Highlights
A days the aims of civil construction are reduce the waste and improve the quality and productivity
Considering the results of parametric studies and calculus procedures outlined in this work, is concluded that: n When the cross section of the column is increased, the geometry of the socket base increases and the minimum reinforcement decreases
In terms of the total consumption of the materials, there is an increase in both consumptions with the increase of the column cross section. n The comparison between the rectangular sections of the columns showed that the economic sections are those towards the higher loads
Summary
A days the aims of civil construction are reduce the waste and improve the quality and productivity. CANHA et al [5] presented a behavior analysis of this type of connection by experimental studies With these results, they proposed an analytical method for the design of the socket base. CARVALHO & CANHA [7] analyzed the behavior of the connection between a column and a foundation by socket base (totally embedded in the foundation block) using a truss method, the authors considered that the foundation block was fixed on the top of two piles. This type of connection was a subject of study of DELAIBERA & GIONGO [2].
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