| The structure of reinforced concrete slab-column is relatively simple, loadtransfer is sample and reliable, it can separate the room flexibly, it also can meetvarious function requirements. Because of this structural system do not to set beam,so it reducing floor storey. With the same height for other structural system, it canincrease the number of layers and has good economic benefits. Under lateral loads,slab-column connections are required to bear horizontal shear and unbalancedmoment. Relative to other structure form, slab-column structure form perform badlyin carrying capacity and seismic performance. If a node destroyed, force andunbalanced moment are afforded by the adjacent node. Adjacent node will beoverloaded. This chain destruction will lead to floor collapse in slab-column structuralsystem and lead to disaster. This article is to study the seismic performance ofslab-column connections through exerting prestressed reinforced in slab-connections.The slab-column connections with prestressed reinforced have the followingadvantages: simple construction, high reliability, the prestressed reinforced can alsobe used as punching shear reinforcement to bear punching power. Under theprestressed role, the concrete in core area of slab-column connections greatlyincreased the energy consumption performance. Its hysteresis curve is fuller undercyclic loading. This article designed two specimens that specimen A with prestressedsteel and specimen B with ordinary steel.This article has the following main research content:1Through exerting cyclic loading on the two specimens, we can analysis thephenomenon of the generation and distribution of crack, the size and distribution ofreinforcement strain, the load-displacement curve and the eventually destroymorphology.2Through the tests phenomenon and the experimental data, we can evaluate thetwo specimens on node strength, stiffness, crack resistance, the performance of energyconsumption, the hysteresis curve, failure modes, etc. 3By comparing two test specimen phenomenon and data of the two specimens,we can analysis seismic performance influence of prestressed reinforced onslab-column connections.4On an experimental basis, we conduct finite element analysis on this two platecolumn edge node by ANSYS general purpose finite element software. ThroughANSYS displacement load curve, concrete and steel stress cloud images and crackscloud images, we can compare the seismic performance of the two nodes. |
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