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Experimental Research on Concrete Structure with Specially-shaped Columns Joints by X-Shaped Reinforcement

Author: MaLiPing
Tutor: WangTieCheng
School: Tianjin University
Course: Structural Engineering
Keywords: Shaped columns Node X-shaped reinforcement Seismic performance
CLC: TU375
Type: Master's thesis
Year: 2011
Downloads: 21
Quote: 0
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Abstract


In recent years, the structure of concrete columns to be more widely used in the country has good architectural features . In order to develop and improve the structure of concrete columns , domestic shaped columns component profiled Column Connections node and profiled column frame , a large number of experimental and theoretical research . Experimental studies have shown that : Due to the particularity of the cross-section in the form of shaped column structure , shaped columns than rectangular column node beam-column joints weak , thus limiting the building height and use of special-shaped column structure . How to enhance the seismic performance of special-shaped column structure node to improve the building height and use of shaped column structure is the problems to be solved . X-shaped reinforcement to enhanced node shaped columns , shaped columns node compared with ordinary concrete columns node under the same conditions Experimental and theoretical analysis to verify the feasibility of the X-shaped reinforcement to improve the seismic performance of the shaped columns by X tendons enhanced . By X tendons and shaped columns node node in the core area of the shaped columns under low cyclic loading test , the seismic performance in the comparative study of two shaped columns side node and two shaped columns . The research shows that the node in the core area of ??the concrete columns was equipped with X tendons the profiled column failure characteristics of the nodes can be significantly improved , improve the cracking load of the nodes in the core area of ??nodes cumulative damage reduced to improve the shear capacity of the nodes . Shear mechanism in the rectangular column joint shear mechanism based on the study of special-shaped column node , node shaped columns shear strength of the binding assay , the core area of research node with X -shaped ribs cracking shear .

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CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Reinforced concrete structures
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