A Reinforcement Method for Reinforcement Area Corresponding to the Unyielding Performance State of Members

Abstract

The invention relates to a reinforcement arranging method for a needed reinforcement area corresponding to a component unyielding performance state. The reinforcement arranging method comprises the steps that firstly assumption is made as follows: (1) in a power time-history process, energy absorbed by reinforcement in the section of a component does not change along with the reinforcement area; (2) the constitutive relation of the reinforcement is a bilinear model, in major earthquake input, the input energy of an earthquake in a structure is mostly consumed through the energy consumption of the component, the volume of the energy consumed by the component is shown as the volume of hysteretic energy of the constitutive relation of materials in the section, according to the assumption, the occurrence of yield of the reinforcement is indicated once the strain of the reinforcement in the section of the component is larger than yield strain, and the absorption energy of the reinforcement is EA at the moment. The energy EB contained in the reinforcement just in the yield state is calculated, an equation is established based on the energy equivalence principle, and the needed reinforcement area corresponding to the component performance state is derived step by step. According to the reinforcement arranging method for the needed reinforcement area corresponding to the component unyielding performance state, reinforcement areas conforming to the section of the component in different performance targets can be calculated, the application of any practical project can be directly guided, and the current design situation that a large amount of time needs to be consumed to conduct recalculation is changed.

Description

technical field [0001] The invention relates to a reinforcement method for the reinforcement area required by the unyielding performance state of the component, in particular to a method for re-checking the reinforcement of the component based on the elastic-plastic results of large earthquakes in the design of the anti-seismic performance of the structure, which belongs to the requirements of the unyielding performance state of the corresponding component. Innovative technology of reinforcement method for reinforcement area. Background technique [0002] Performance-based design of particularly complex and irregular structures is one of the key means to determine the safety, economy and rationality of structures. In the design of structural seismic performance, appropriate seismic performance targets should be selected according to the particularity of the structural scheme, and the performance status of structures or components under three different levels should be review...

AI Technical Summary

Problems solved by technology

At this stage, the large earthquake analysis of the overall building structure not only requires high computer hardware configuration, but also takes a long time to solve the elastoplasticity of large earthquakes. For example, when calculating a 30s seismic wave input in one direction for a 250m super high-rise structure, it takes 30 hours. hours, to calculate this type of structure, it will take 2940 hours in total if there are 7 waves

Moreover, once the performance state of the steel bars in the component section does not meet the proposed performance goals, the common practice is to increase the reinforcement size of the section and recalculate and check. At this time, the time and cost required for recalculation will hardly meet the actual engineering use Require

There is also little research on how to calculate the required reinforcement area for different performance states

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