NONLINEAR ANALYTICAL MODEL FOR PILED RAFT FOUNDATION SUBJECTED TO HORIZONTAL LOAD AND APPLICATION OF IN-SITU LATERAL LOADING TESTS

Abstract

A new hybrid method is developed to analyze the behavior of piled raft foundations subjected to horizontal load. The method is based on nonlinear elastic-plastic springs of individual piles and raft, together with elastic interaction between different piles and with the raft. Calculating the displacement and stress of piled raft foundations, which have rigid joint or pin joint at pile heads, using the method provides a reasonable agreement to results from the in-situ lateral loading tests performed at alluvial soft deposits.