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Full hall formwork scaffold (hereinafter referred to as FHFS) has been widely used as a temporary structure in bridge construction. However, FHFS collapsed quite often in many places with a considerable number of reported casualties, due to inadequate knowledge of construction factor and the relationship between load mode and bearing capacity. The existing calculation methods didn’t consider the effect of eccentric transfer of upper load from horizontal tubes to posts, the situation that posts and horizontal tubes were not in the same plane induced by eccentric connection of coupler, and the bearing capacity reduction of FHFS under eccentric local heaped load (what were totally named eccentric load here). For this case, basing on the analysis of structure characteristics, five FHFS were built and tested to failure in order to examine the structural bearing behavior. Moreover, finite element models with consideration of eccentric load were also established to evaluate the FHFS bearing capacity. Based on both the experimental and the analytical results, it could be concluded that the eccentric load have negative effect on the FHFS bearing capacity, and large eccentric local heaped load would induce local members buckling in FHFS, and further caused structure integer collapse.

Bearing Behavior of Bridge Full Hall Formwork Scaffold under Eccentric Load