Research on Lateral Resistance Characteristics of Pile Foundation supported on Contact Column Type Cement-Treated Ground

摘要

The solidification method including deep mixing stabilization is widely used as countermeasure of settlement of structures on soft ground and supplementary method for the construction of the structure. Recently, the technology that expects the reaction force from the solidification improvement ground is proposed in the highway bridge. To apply to an actual bridge, it is necessary to examine the bearing mechanism and the failure mode by the loading experiments and to examine how to secure the safety allowance against failure. In this research, bearing mechanism, reaction characteristics and failure mode pile foundation of highway bridge supported on contact column type cement-treated ground were clarified by lateral loading tests and numerical analysis. Based on demand performance of highway bridge foundation and acquired knowledge, what design and construction of pile foundation of highway bridge supported solidificated ground should be was considered.