Analyzing method of whole process from prestressing construction to application of reinforced concrete structure

Abstract

The invention relates to the technical field of structural engineering, and particularly discloses an analyzing method of the whole process from the prestressing construction to application of a reinforced concrete structure, which can achieve the structural internal force deformation effect in the whole process from the prestressing construction to application and guarantees the safety of the structural design. The method includes the following steps: simulating the whole process from the whole structure construction to application of the reinforced concrete structure; analyzing and simulating the whole process of loosening a prestressing anchor clamp and a rope body and computing the first prestress loss value caused by the relaxation effect at one moment t; analyzing and simulating thewhole process of the creep and shrink effect of the reinforced concrete and computing the second prestress loss value and the third prestress loss value caused by the creep and shrink effect of the reinforced concrete at the moment t; and computing the actual prestressing force, the structural internal force and the structural deformation at the moment t according to the first, the second and thethird prestress loss values and the tension prestressing force.

Description

technical field [0001] The invention relates to the technical field of structural engineering, in particular to an analysis method for the whole process from prestressed construction to use of reinforced concrete structures. Background technique [0002] The working principle of the prestressed concrete structure (hereinafter referred to as: the structure) is to pre-reasonably arrange the prestressed tendons and stretch them before bearing the external load, so as to form a state of compressive stress inside the concrete structure. The tensile stress offsets part or all of it to reduce or avoid the occurrence and development of concrete cracks, thereby improving the crack resistance and stiffness of the component. [0003] The existing prestressed simulation analysis method for reinforced concrete structures generally adopts the "component method", that is, a single prestressed component or a local component is extracted from the overall model, and prestressed is applied for...

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Problems solved by technology

[0005] The existing prestressed analysis method for reinforced concrete structures extracts a single prestressed member from the overall model for analysis, and only considers the influence of the tension batch of the prestressed member in the construction simulation, which is not comprehensive, making the actual prestressed structure of the structure The calculation result of the stress deviates greatly from the actual value, which is likely to bring safety hazards to the structural design

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