Research on the relationship between the biggest pulling stress in the concrete piles immediately after

Abstract

     When studying stress status of pile in 2 beds, bottom of pile meets supporting force which is not much mutable, many authors have studied influence of buffer of pile head to compressing stress of pile when being pile, choosing hammer head is also facing many difficulties due to specific conditions or construction contractors do not have a full range of hammers to choose the proper hammer. The problem given is to study about pulling stress in the concrete piles and to consider effect of volume of hammer cushion to pull stress greatest of piles after being piled that help us to make selecting solution in order to pile safely and efficiently.