營造鋼管施工架用途及破壞之初步探討

Preliminary Investigation of Usage and Failure Models of Tubular Steel Scaffolding in Construction

鋼管施工架為我國高挑空建築之模板支撐及施工架結構系統常用的構材，由於目前可供設計及施工參考之規範甚為缺乏，工地常是憑藉著施工經驗來架設，致使常有倒塌意外發生。本文介紹國內簡易型門型鋼管施工架常用之理由，並提出六種可能引致鋼管施工架之模板支撐結構系統失敗的模式，以及兩種施工架結構系統破壞模式，供營建工程界及學界參考，期能減低鋼管施工架結構系統的倒塌意外。

Tubular steel scaffolding is commonly used in Taiwan as construction falsework and finishing structure of high headroom buildings. Contractors often rely on their own on-site experiences in the construction of these systems because specific design and construction codes are not readily available. Consequently, a number of major failures have occurred over the years. This paper reviews the common types of tubular steel scaffolding used in Taiwan, and reveals six possible failure models for falsework and two possible models for the finishing structures. The findings are presented as reference for the construction industry and for future study in order to reduce the probability of falsework and finishing collapses.