ABSTRACT
In recent years, re-evaluating the earthquake level and preparing existing structures and their foundations ready against the supposed coming large-scale earthquake have raised the necessity of earthquake-resistant reinforcement method. Actually, reinforcement methods for pile foundations are limited due to construction restrictions such as site and space. To deal with that problem, the authors proposed a new type of earthquake-resistant reinforcement method, applicable even for existing pile foundations. In this method, ground solidification technique is adopted in construction of a solidified body in the ground surrounding a portion of the pile group, which is in combination with the piles and footing resulting in a two-layer larmen structure strongly reinforcing the pile foundation against the earthquakes. The effectiveness of the method had previously been confirmed through 1 g-field shaking
table model test and numerical simulation (Adachi 2002). This paper reports about a full-scale experiment carried out for investigating the construction performance and quality of the proposed method at actual scale level of pile foundation.
