Sea sand concrete bending member

A flexural member and concrete technology, applied in truss-type structures, joists, girders, etc., can solve the problems that sea sand cannot be effectively utilized as resources, the prospects for industrialized production are not obvious, and the overall bearing capacity of the structure is reduced. Excellent bending performance, sufficient stress and deformation, and improved shear performance

Inactive Publication Date: 2014-09-03
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the chloride ions contained in the sea sand will seriously corrode the steel bars, reduce the overall bearing capacity of the structure and cause serious engineering accidents such as house collapses, experts and scholars at home and abroad have long been committed to exploring various methods to eliminate the influence of chloride ions in sea sand. Research on methods and approaches, but they have not achieved the desired effect, so sea sand has not been able to be effectively utili

Method used

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  • Sea sand concrete bending member
  • Sea sand concrete bending member
  • Sea sand concrete bending member

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The structure diagram of the present invention is as figure 1 , 2 , 3, the sea-sand concrete flexural member of the present invention includes sea-sand concrete 1, FRP longitudinal reinforcement 4, and sea-sand concrete 1 is provided with FRP longitudinal reinforcement 4 arranged along the length direction of the bending member and is provided with The FRP transverse reinforcement arranged along the width direction of the flexural member, the FRP longitudinal reinforcement 4 and the FRP transverse reinforcement are tied together to form a member reinforcement skeleton through connectors, and an FRP pipe is arranged eccentrically in the sea-sand concrete 1. In this embodiment, the FRP pipe is set The ductility of sea-sand concrete elements can be improved at locations close to the tension zone.

[0024] In this embodiment, the above-mentioned FRP pipes are FRP round pipes 2 or FRP square pipes 3 . The cross-sectional shape of the above-mentioned sea-sand concrete flex...

Embodiment 2

[0039] The difference between this embodiment and Embodiment 1 is that the above-mentioned FRP transverse bars are FRP stirrups 6 , and the FRP longitudinal bars 4 are bound to the FRP stirrups 6 through connectors to form a member reinforcement skeleton. The above-mentioned FRP stirrup 6 is an FRP bar bent into a square or a circle. The cross-sectional shape of the sea-sand concrete flexural member along the width direction is rectangular or circular, Figure 4 , Figure 5 Shown is a rectangular cross-section, Figure 6 Shown in circular cross-section. and Figure 4 It is shown that the FRP pipe eccentrically arranged in the sea sand concrete 1 is a FRP round pipe 2, Figure 5 It is shown that the FRP pipe eccentrically arranged in the sea-sand concrete 1 is an FRP square pipe 3 . Such as Figure 6 It is shown that the FRP pipe eccentrically arranged in the sea sand concrete 1 is an FRP circular pipe 2 . Figure 7 Shown is a schematic diagram of binding FRP stirrups 6 ...

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Abstract

The invention discloses a sea sand concrete bending member, comprising sea sand concrete (1) and fiber reinforce plastic (FRP) bars (4), wherein an FRP longitudinal bar (4) arranged along the length direction of the bending member and an FRP transverse bar arranged along the width direction of the bending member are arranged inside the sea sand concrete (1); the FRP longitudinal bar (4) and the FRP transverse bar are strapped into a member steel skeleton through a connector; an FRP pipe is also arranged inside the sea sand concrete (1) in an eccentric manner. By adopting the sea sand concrete bending member, the ductility of the sea sand concrete member can be improved, the shearing resistance is improved, the brittle effect of the steel is reduced, and the sea sand concrete bending member is excellent in corrosion resistance, simple and convenient to construct and good in mechanical behavior. The sea sand concrete bending member not only is light in weight and high in strength, but also can significantly prolong the service life of the concrete structure, and the maintenance cost is greatly lowered.

Description

technical field [0001] The invention relates to a sea-sand concrete bending member, in particular to a sea-sand concrete bending member with FRP bars, which belongs to the modification technology of the sea-sand concrete bending member. Background technique [0002] In recent years, foreign research on the application technology of FRP bars (FRP: Fiber Reinforced Plastics Bar) in civil engineering has become more and more systematic, and has been successfully applied in engineering. Durability, the high-performance FRP-reinforced sea-sand concrete materials and structural systems that use sea sand instead of river sand and FRP bars instead of steel bars have broad application prospects, are in line with national industrial policies, and are in line with the country's strategic direction of vigorously promoting energy conservation and emission reduction. Materials, construction technology, and related upstream and downstream industries will all have an obvious driving role, w...

Claims

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Application Information

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IPC IPC(8): E04C3/29E04C5/07
Inventor 卢俊坤李丽娟李树旺刘锋
Owner GUANGDONG UNIV OF TECH
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