doi:10.3850/978-981-08-9247-0_rp014-icsas11

ABSTRACT

Steel scaffoldings collapse quite often in many places with a considerable scale of casualty reported, but their behaviour has not been studied to an extent of many other permanent structures. This study focuses on the effect of eccentric loads on steel scaffolding systems used in construction sites. The type of the scaffoldings considered here is the door-type steel scaffold with inner reinforced sub-frames with the unrestrained boundary. This study shows that the critical load of scaffolding system under the eccentric load is the lowest and that under the concentric load is the maximum. If the bottom jack base of a scaffolding system in construction sites is strengthened to a fixed end, the critical load of this scaffolding system will be greatly increased. If a scaffolding system is assembled to more than 8 stories high, the critical load of the scaffolding system with the fixed end base can be increased to 2.4 times of that with the hinged base. The simulated scaffolding test indicates that the critical load of the system under eccentric loads is the lowest.

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