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Bearing capacity of reinforced concrete special relationship with the distribution rate of bone

Author: QiuXue
Tutor: LiZhe
School: Xi'an University of Technology
Course: Structural Engineering
Keywords: Steel Reinforced Concrete Columns Carrying capacity With bone ratio Marc Shear Capacity
CLC: TU398.9
Type: Master's thesis
Year: 2009
Downloads: 22
Quote: 0
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Abstract


Reinforced concrete special structure makes up concrete columns carrying capacity and ductility of structural deficiencies, inherited shaped column structure to save space, improve the effective use of the area's architectural features. But in recent years related to the performance of their stay in a small pilot study and theoretical analysis, this paper, the usefulness of the structure for a certain amount of research, using calculation procedures for carrying capacity of steel reinforced concrete columns and with the correlation between the rate of bone were studied and analyzed to obtain correlation table for the designer in the design of direct inquiries. In order to adapt the form and the column section profiled steel with changes in the algorithm to replace the section of the boundary line for the two-dimensional grid computing unit, the establishment of the force balance equations, and then using the extrapolation implicit nonlinear equations, too a reinforced concrete special section of internal forces and deformation, and thus through the iterative solution components to complete the whole process of nonlinear analysis, the axial force is known under the maximum bending moment values. Based on the profiled column bearing capacity and ductility of the main factors in determining the most unfavorable loading angle, cross-sectional form, with bone forms longitudinal reinforcement diameter, the diameter of the stirrups premise, based on 17 kinds of axial compression ratio, 5 kinds of concrete grade , three kinds of stirrups spacing on 120 T-shaped cross-section columns were more than 2600 kinds of situation analysis, based on both 17 kinds of axial compression ratio, 5 kinds of concrete grade, three kinds of stirrup spacing, three kinds of limb length on the 120 L-shaped cross-section columns were more than 2600 cases analyzed, reinforced concrete T-shaped, L-shaped cross-section columns with normal section bearing capacity and the correlation between the rate of bone by data fitting, with bone ratio - moment - axial force related correspondence form. This is still 16 reinforced concrete T-shaped cross-section column shear strength test, based on the finite element software simulation in which two Marc, get the right model parameters after 18 trials with different forms of reinforced concrete T Bone shaped column simulation test results show that: T-shaped member shear capacity with axial compression ratio, stirrup ratio, with the increase of the rate of bone, with the shear span ratio decreases, numerical simulation results in good agreement with the experimental data, it does not change the form of bone change with T-shaped cross-section steel column shear capacity of the main factors associated with the law, the final test results based on the numerical simulation of reinforced concrete T-shaped columns proposed shear strength empirical formula, the reference for engineering applications.

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