Preparation method of confined square concrete column

A technology for confining concrete and concrete columns, applied in complex mathematical operations, instruments, CAD technology, etc., can solve the problems of poor practicability, low prediction accuracy of compressive strength of constrained concrete, and high strength, and achieves a wide range of applications and models. The effect of simple form and high prediction accuracy

Pending Publication Date: 2019-09-27
SHANDONG PROVINCIAL ACAD OF BUILDING RES +1
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Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a method for preparing a confined square concrete column to solve the problem of low prediction accuracy of the compressive strength of confined concrete in the prior art, poor practicability, and low strength when predicting the strength of large-scale concrete columns. Problems such as high

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  • Preparation method of confined square concrete column
  • Preparation method of confined square concrete column
  • Preparation method of confined square concrete column

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Embodiment Construction

[0039] The preparation method of a constrained square concrete column will be further described in detail below in conjunction with specific examples. These examples are only for the purpose of comparison and explanation, and the present invention is not limited to these examples.

[0040] A method for preparing a constrained square column considering the size effect, the constrained square concrete column includes a steel skeleton, concrete and FPR cloth, and the FPR cloth is a fiber-reinforced composite material;

[0041] The preparation of the constrained square column includes the following steps: S1. Establish the calculation model of the strength of the constrained square concrete column-the strength of the unconstrained square concrete column:

[0042] Coulomb proposed the theory of internal friction in 1773, as shown in equation (1), that is, for a material under a complex stress state, when the shear force on it reaches the maximum shear stress τ, the material will fai...

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Abstract

The invention discloses a preparation method of a confined square concrete column, which belongs to the technical field of building construction, and solves the problems of low prediction accuracy of the confined concrete compressive strength, low practicability, higher strength when predicting the strength of a large-size concrete column and the like in the prior art. The preparation method comprises the following steps of S1, establishing a calculation model of the constrained square concrete column strength-unconstrained square concrete column strength considering a size effect; S2, acquiring the parameters for preparing the confined square concrete column, and predicting the compressive strength of the confined square concrete column; and S3, preparing the confined square concrete column according to the parameters meeting the compressive strength requirement of the confined concrete column. The preparation method is suitable for preparing the large-size concrete column considering the size effect.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a preparation method of a constrained square concrete column. Background technique [0002] The current prediction method will overestimate the compressive strength of confined concrete and underestimate the ultimate strain: active confinement is that the concrete member has been subjected to lateral constraints before loading, and its maximum principal stress (or ultimate stress) before the member is damaged is higher than that of passively confined concrete, but the second curve of the stress-strain relationship of actively confined concrete rises slowly, and even has a downward trend after the peak value of the curve; for passively confined concrete, such as FRP materials, only when the concrete has a large lateral Therefore, under normal circumstances, the ultimate stress of passively confined concrete is slightly lower, but in the case of strong lat...

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Application Information

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IPC IPC(8): G06F17/50G06F17/11G06F17/15
CPCG06F17/11G06F17/15G06F2111/10G06F30/13
Inventor 梅佐云王志褚世洪张营营尚中锋郑岩倪晓雯赵玉帅
Owner SHANDONG PROVINCIAL ACAD OF BUILDING RES
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