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Experimental Study On Seismic Behaviors Of Beam-shaped Transfer Frame-supported Short-leg Shearwall Structures

Posted on:2007-01-01Degree:MasterType:Thesis
Country:ChinaCandidate:Z NiFull Text:PDF
GTID:2132360185974687Subject:Structural engineering
Abstract/Summary:PDF Full Text Request
The seismic behaviors of reinforced concrete structure frame-supported short-leg shear wall structure are investigated in the thesis of the test. According to experimental achievements of two reinforced concrete structure specimens of reinforced concrete structure with transfer story which have the haunched transfer beams and one specimen of reinforced concrete structure with transfer story which have no haunched transfer beams under cyclic loading, basic behaviors of the structure are achieved, including stress states before and after cracking, occurrence and development of cracks and the failure mode. The ductility, energy dissipation features, deterioration process of stiffness, yielding mechanism and failure phenomenon are specially studied in the test. In addition, load-transferring paths in the short-leg shear wall, transfer beam and frame-leg column are investigated.The test results proved that the seismic behavior of frame-supported short-leg shear wall structure by reasonable design is accepted. The load and displacement loop is plump, and the descent part of framework curve is smooth in the structure. It has enough ductility to reach the requirement specified in"Code for seismic design of buildings". The stiffness distribution of frame-supported short-leg shear wall is even better, and the problem of soft story can be avoided, and the yielding mechanism is ductile.On the basis of existing experimental results, a comparison is made between the results of the haunched transfer beams and the ordinary transfer beam, and a good agreement is obtained . The agreement is that the armpits on the transfer beam could keep the joints of the transferring structure well which make the frame-supported short-leg shear wall structure appear the plastic hinge of the beam first and then appear he plastic hinge of the column and that with the permission of building space the designers should take use of the transfer story with the haunched transfer beams first.
Keywords/Search Tags:frame-supported short-leg shear wall structure, horizontal cyclic loading experiment, transferring structure, haunch
PDF Full Text Request
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