By Jong Wan Hu
This booklet introduces new clever connection structures which might be utilized in aseismic construction layout as a way to keep watch over inter-story drifts and to lessen residual displacements. also they are applied as damper units and base isolators. the appliance of those platforms to composite second body constructions can be taken care of within the publication. furthermore, the booklet will speak about how one can make nonlinear body versions used for simulating whole habit within the construction in addition to boost finite aspect (FE) versions used for safely reproducing mechanical habit within the neighborhood procedure. may be of curiosity to researchers, engineers, and scholars within the box of civil and structural engineering
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Extra info for Smart Connection Systems: Design and Seismic Analysis
Sample text
The last connection type had the best seismic resistance behavior, but the fabrication difficulties are the main disadvantage of this connection type. 4 Application of SMA in structures Smart structures for civil engineering are described as systems that can automatically adjust structural characteristics in response to external disturbances and unexpected severe loading. The idea is that the structure can be coaxed towards performance that results in improved structural safety, serviceability and extension of structural life (Otani, 2000).
The rotational demands at the connections vary according to whether they are in use in ordinary, intermediate, or special moment frames. 03 radians under cyclic loading has been accepted as the rotational limit between ductile and brittle connections for special moment resisting frames. This limit accepts up to a 20% decrease from peak bending resistance at the rotational limit. 2 Details of connections to CFT columns. moment connections (FR/FS) have several structural disadvantages and that bolted connections or combinations of field bolted-shop welded connections (PR/FS or PR/PS) pose an attractive solution to this brittle failure dilemma (Swanson & Leon, 2000).
2004; Penar, 2005). This type of connection (See Fig. 5 Super-elastic Nitinol tendon connection (Penar, 2005). 7 8 Smart connection systems: Design and seismic analysis provides a recentering capacity because of the lack of permanent residual deformation in the tendons due to the SMA material characteristics. The ultimate purpose of this research is to develop suitable new design criteria for incorporating composite CFT structures into a partially restrained, partially strength connections. In addition, this research intends to explore a mixture of steel bars and super-elastic Nitinol bars as connecting elements to CFT columns.