A method for designing normal section bearing capacity reinforcing bars of a shear wall column with special-shaped end columns

Abstract

The invention discloses a method for designing normal section bearing capacity reinforcing bars of a shear wall column with special-shaped end columns, which mainly comprises the following steps: simulating the shear wall column with the special-shaped end columns by adopting an entity unit during modeling, and performing finite element calculation and analysis on an integral structure model; finding out the centroid position of the overall combined wall section, and analyzing and counting to obtain the most unfavorable design combination internal force of the overall section; carrying out linear buckling modal stability analysis on the wall column; calculating the average axial compression ratio of the whole wall column section, and determining the wall column edge component type and the reinforcement area of each part preliminarily; drawing a related bearing capacity skeleton curve; and drawing the relevant load effect intersection points into the corresponding bearing capacity framework curves to judge whether the bearing capacity reinforcing bars of the normal section of the wall column meet the design requirements or not. According to the calculation method provided by the invention, the influence of section shape characteristics of the special-shaped end column on a wall column reinforcement calculation result is considered; the joint stress of the special-shaped end column and the shear wall column is considered, the reinforcement result can ensure the safety of the structural design of the wall column, and certain practicability is achieved in the actual engineering design.

Description

technical field [0001] The invention relates to the field of civil engineering structure design, in particular to a method for designing reinforcement for the bearing capacity of a front section of a shear wall with a special-shaped end column. Background technique [0002] The commonly used structural calculation software at the present stage will design the end column and the connected wall pier with a rough method of equivalent wall thickness when designing the reinforcement of the normal section bearing capacity of the shear wall with special-shaped end columns simulated by shell elements. It is impossible to consider the influence of the shape characteristics of the section shape of the shear wall with special-shaped end columns on the calculation results; when the rod element is used to simulate the end columns, the software adopts the direct superposition calculation method for the wall columns, and each adopts different calculation assumptions, resulting in The calcu...

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Problems solved by technology

[0002] The commonly used structural calculation software at the present stage will design the end column and the connected wall pier with a rough method of equivalent wall thickness when designing the reinforcement of the normal section bearing capacity of the shear wall with special-shaped end columns simulated by shell elements. It is impossible to consider the influence of the shape characteristics of the section shape of the shear wall with special-shaped end columns on the calculation results; when the rod element is used to simulate the end columns, the software adopts the direct superposition calculation method for the wall columns, and each adopts different calculation assumptions, resulting in Unreasonable Calculation Result of Column Shear Wall's Reinforcement

Due to the irregular cross-sectional shape of the shear wall with special-shaped end columns, the stress is complicated. If the overall wall is roughly equivalent to a rectangular, T-shaped or I-shaped cross-section in the traditional design, it cannot reflect its reality. The stress situation leads to large errors in calculation results, and there are unsafe factors in the bearing capacity of component reinforcement

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