Lateral behavior of geogrid-reinforced unconnected piled raft

Mohsen Zakai | Mohammad Karami

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=53956
Date :  2017/08/16
Publish in :    International Conference on Contemporary Iran on Civil Engineering Architecture and Urban Development


Keywords :behavior, geogrid-reinforced, unconnected

Abstract :

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Abstract Studying the behavior of deep foundations and piled rafts under different loads has been considered from many years ago. Lateral displacement of unconnected piled raft system is an important issue which should be controlled under static and dynamic load. In order to make the design of piled raft cost-effective, piles can be disconnected from the raft and a gravel cushion should be used between the pile heads and the raft to reduce stress concentration at pile heads considerably. However, large lateral displacements of unconnected piled rafts, as a defect, can be controlled by using geogrid in gravel cushion. In this paper, the lateral behavior of unconnected piled raft has been investigated via 3D models in ABAQUS software. In this regard, the effect of position and number of geogrid layers are studied.