0602 PT_GrasspoSystem_ENGLISH.pdf

Grasspo System Securing structural stability ; Weak against external physical impacts such as fires Low afforestation ; Hard to afforest the front High costs compared to general construction methods Problems of Existing Construction methods Construction Environment Development of a New Construction Method Securing Internal/External Stability 1. Background for Development Environment-friendly front afforestation Applicable in cut-slope sections and embanked sections Securing Constructability and Economic feasibility Demend for Environment-friendly Retaining wall technology ; Alternative needed for artificial structures such as concrete Increasing Contracts for Retaining wall construction ; Development projects, such as roads and industrial complexes, are getting larger Ve ge ta tio n ba g m et ho d Ve ge ta tio n ba g m et ho d M S E W / R S S M EC H AN IS M M EC H AN IS M Theory on the Earth reinforcement and reinforced slope retaining walls Advantage ① Place Gasspo-T bags after binding them with Reinforcement Grids ② Afforestation : Place Garsspo-G bags ① Add flexibility against physical impacts to retaining walls ② In case that the front is damaged, just repair the front : Easy to repair ③ Concrete is not used at all ④ Good access to the job site because the materials used are lightweight 2. Outline of Grasspo System Theoretical background (FHWA-NHI-00-043) Construction method : Similar to the method for reinforced slope retaining walls physical impacts to retaining In case that the front is Concrete is not used at all Good access to the job site because the materials 3. Detail of Grasspo System (1) Problem of Exiting Afforestation retaining wall method Front materials damage in a fire Reinforcing materials are damaged by physical impacts In a fire, front materials are damaged and the front side of the retaining wall Low afforestation and natural succesion Poor applicability to cut section Front material easily damaged by U