Retarded adhesive prestressed steel reinforced concrete beam

A technology for slow-bonding prestressed concrete beams, applied in the field of shaped steel concrete beams, can solve the problems of slow speed, complicated construction of bonded prestressed bars, etc., achieves fast speed, is conducive to popularization and application, and is resistant to bending limit load. high effect

Inactive Publication Date: 2012-07-11
TONGJI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a slow bonded prestressed steel concrete beam, which solves the defects of complex construction and slow speed of bonded prestressed tendons in the current prestressed steel concrete structure

Method used

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  • Retarded adhesive prestressed steel reinforced concrete beam
  • Retarded adhesive prestressed steel reinforced concrete beam
  • Retarded adhesive prestressed steel reinforced concrete beam

Examples

Experimental program
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Embodiment Construction

[0016] The present invention will be further explained below in conjunction with specific embodiments.

[0017] A slow-bonding prestressed steel concrete beam, comprising a concrete beam 1, in which a non-prestressed tendon 2 is arranged, and a stirrup 3 is bound and installed outside the non-prestressed tendon 2. The inside of the concrete beam 1 The non-prestressed tendon 2 is provided with an I-beam 4, and a slow-bonding prestressed tendon 5 is provided on the underside of the I-beam 4 through the concrete beam 1. The slow-bonded prestressed tendon 5 is used in the prestressing The stress tendons 7 are wrapped with a retarded mortar 8 and then wrapped with an impermeable plastic sheet 9 outside the retarded mortar 8.

[0018] The slow-bonding prestressed tendons 5 pass through the concrete beam 1 and are fixed on the concrete beam 1 with anchoring devices 6.

[0019] The I-shaped steel 4 is symmetrically arranged in the middle of the section of the concrete beam 1.

[0020] There ...

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Abstract

The invention relates to a steel reinforced concrete beam which belongs to the field of civil engineering. A retarded adhesive prestressed steel reinforced concrete beam comprises a concrete beam (1), wherein non-prestressed reinforcing steels (2) are arranged in the concrete beam (1), and stirrups (3) are bound and installed outside the non-prestressed reinforcing steels (2). The retarded adhesive prestressed steel reinforced concrete beam is characterized in that: an H-shaped steel (4) is arranged in the non-prestressed reinforcing steels (2) of the concrete beam (1); retarded adhesive prestressed reinforcing steels (5) penetrate through the concrete beam (1) to be arranged at the lower side of the H-shaped steel (4); and retarded coagulation mortar (8) is coated outside prestressed reinforcing steels (7) and is then coated by a waterproof plastic cloth (9) into a round bar shape, so as to form the retarded adhesive prestressed reinforcing steels (5). The retarded adhesive prestressed steel reinforced concrete beam has the characteristics of light structure self-weight, convenience in construction, high speed, high bending-resistant ultimate bearing capacity, good use performance and good economy and applicability.

Description

Technical field [0001] The invention relates to a profiled steel concrete beam, in particular to a slow-bonding prestressed profiled steel concrete beam. Background technique [0002] Steel reinforced concrete structure is a composite structure of steel and reinforced concrete. It overcomes the stability of steel structure, poor fire performance, and the characteristics of reinforced concrete structure with large cross-section and poor ductility. It is a perfect combination of steel and reinforced concrete. Has been widely used. However, due to the reduction of the cross-sectional size of its components, in some cases where structural rigidity is required, the control of cracks and deformation is often difficult to meet the requirements. Therefore, the pre-stressed steel-concrete structure came into being, which is to apply pre-stress to the steel-concrete structure to improve the crack resistance and deformation resistance of the structure. As a new type of composite structure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/293
Inventor 熊学玉郑炜鋆熊斌汪继恕
Owner TONGJI UNIV
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