Analysison Axial compression ratio framework node strong column weak beam effect analysis.doc.pdf

Analysis on Axial Compression Ratio to Strong Column Weak Beam Effect in Framework Node Xin Wen 1,2, a, Zejing Hao3,b and Xingguo Wang3,c 1Tangshan industrial vocational and technical college , China 2Hebei university of technology School of civil engineering,China 3Hebei united university Construction engineering college,China aeric_wxin@163.com, btshaozj@163.com, ctslgwxg@163.com Keywords: Axial compression ratio; Ductility; Carbon fiber; Finite element; Abstract. Nodes of Column ends, included ordinary Intermediate nodes and nodes in the model of carbon fiber, have been established based on finite element program, have analyzed the comparison of the deformation, bearing capacity, ductility in Quasi static state under three conditions of axial compression ratio reinforcement（0.2, 0.4, 0.6）between reinforcement nodes and ordinary nodes, have researched the impact caused by the change of axial pressure ratio on seismic performance of node, The result have shown that size of the axial compression ratio and bearing capacity of reinforced nodes follow basic plastics performance, but ductility of nodes in low axial compression ratio is more effective. Introduction Axial compression ratio is one of important indexes that affect the seismic performance of reinforced concrete members, the concrete column refers to design value of axial pressure and the whole cross section area of the column and design value of axial compressive strength of concrete product, the ratio of its computation formula is as follows: n=N/fcA (1) Where, N is design value of frame column axial pressure in consider of earthquake action, Fc is axial compressive strength of concrete, A is column area. the axial compression ratio limit in Chinese code for design of concrete structures (GB50010-2010) [4] is to ensure that the column under the effect of external force can occur ductile rupture, and the method of conc