Cyclic Behavior of Autoclaved Aerated Concrete External Panel with New Connector

Abstract

In this paper, a new slip-type crossing connector is proposed for autoclaved aerated concrete (ALC) panels with steel frames, and the proposed connector is also studied deeply in terms of seismic performance. The research included pseudo-static tests and finite element simulations. First, the seismic performance of slip-type crossing connectors and standard L-hooked bolts was studied comparatively, including the stability, bearing capacity, stiffness, energy dissipation, and hysteresis performance. ABAQUS 2020 software was used to establish finite element models, and the results of the experiments were verified with simulations on the basis. According to the simulations, a parameter analysis of connector optimization was carried out. The effects of connector thickness and connector plate length on the seismic performance were further investigated. From the experimental and simulation results, the slip-type crossing connector has excellent performance and good assembly efficiency, it can improve the deficiencies of the existing connectors. The comparison demonstrated that the slip-type crossing connector has a complete hysteresis curve, a high energy dissipation capacity, and a 9.7% increase in bearing capacity. The appropriate reduction in connector thickness and plate length can ensure superior seismic performance while saving resources. The finite analysis method can guide the design and implementation of new external ALC panel connectors.

Full Size Two-Layer Steel Frame–Exterior Wall Panel Shaking-Table Test

“…The results revealed that flexible connection nodes can withstand multidirectional earthquakes and reduce the adverse impacts of earthquakes on the surrounding structural systems. Du [17] and Cui [18] proposed a steel-frame autoclaved aerated concrete (AAC) exterior wall panel connection node. The mechanical characteristics of the exterior wall panel and connection nodes were studied through shaking-table tests.…”