SHEAR PERFORMANCE OF HYBRID POST AND BEAM WALL SYSTEM WITH STRUCTURAL INSULATION PANEL INFILL

摘要

A hybrid post and beam wall system with structural insulation panel (SIP) infill was developed as a part of a green home 'Han-green' project by adopting post and beam construction for contemporary life style. This project is an on-going research work at the Korea Forest Research Institute to develop a building system which provides an upgraded performance with Korean traditional architectural characters and stimulates industrialized building practice by using prc-cut heavy timber members. For the traditional post and beam construction, wet-type wall materials composed of yellow-soil, wood strips, and straws has been applied. Compared to the traditional wet-type wall materials, the hybrid wall system has benefits, such as, higher structural capacity, better thermal insulation performance, and shorter construction term because of dry-type. To build up the hybrid wall system, firstly SIP infill wall components can be manufactured at factory, and secondly inserted and nailed with helically threaded nails into the post and beam members at construction site. Shear performance of the hybrid wall system was evaluated through horizontal shear tests. The SIP hybrid post and beam wall system showed higher values of maximum shear strength, initial stiffness, ductility, yield strength, specified strength, and the specified allowable strength than those of post and beam with light-frame infill wall components. The hybrid wall system can also provide speedy construction and structural and functional advantages including energy efficiency in the building system.