A small eccentric tension concrete shear wall medium earthquake repairable checking calculation method

Abstract

The invention relates to a small eccentric tension reinforced concrete, steel reinforced concrete or steel plate concrete shear wall medium earthquake repairable checking calculation method, which isused for solving the technical problems of nominal stress and maximum crack width control of a wall limb in a high-rise structure. According to the technical scheme, the method comprises the steps that firstly, nominal tensile stress and nominal shear stress standard values of wall limbs are linearly superposed to form nominal combined stress standard values, the nominal combined stress standard values are compared with concrete tensile strength standard values, and nominal tensile stress item coefficients are determined; Secondly, checking according to a nominal combination stress formula, and when a nominal tensile stress standard value is not greater than a corresponding numerical value, not configuring section steel or a steel plate; Thirdly, steel bars (including section steel and steel plates) and other effective forces in the concrete wall column are controlled to be not larger than the corresponding steel bar stress of the maximum crack width; And finally, comprehensively judging and adjusting the repairable state. The method is suitable for checking when various concrete shear walls are under small eccentric tension, is well connected with specifications, can be widely applied to the field of high-rise structures, and has good technical and economic benefits.

Description

technical field [0001] The invention relates to a moderate earthquake repairable checking calculation method applied to a reinforced concrete shear wall, a steel concrete shear wall or a steel plate concrete shear wall in a small eccentric tension state in a high-rise building structure, and belongs to the technical field of structural engineering. Background technique [0002] In super high-rise and over-limit high-rise building structures, cylinders enclosed by reinforced concrete shear walls, steel concrete shear walls, or steel plate concrete shear walls are widely used, and some wall limbs bear large wind loads. It is easy to be in a small eccentric tension state due to the action of earthquakes, especially in the case of moderate earthquakes during performance-based design. This phenomenon is more prominent and becomes a design difficulty. [0003] In the national and industry standards: GB50011-2010 "Code for Seismic Design of Buildings" aims at the repairable design ...

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Problems solved by technology

[0009] The purpose of the present invention is to provide a kind of small eccentric tension concrete shear wall repairable quantitative checking method, to solve the problem that the standard existing in the prior art fails to provide suitable for small eccentric tension concrete shear wall The earthquake-repairable design checking method and the corresponding stress control level, as well as the existing calculation models for reference methods have not been verified by experiments and are unsafe in some cases, and the various stress control methods are inconsistent or even opposite. Consider the technical problems of insufficient bearing capacity and stability caused by composite forces

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