Sea sand concrete bending member

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...

AI Technical Summary

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 utilized as a resource due to technical reasons

[0004] The research on the utilization of sea sand is relatively active in coastal areas. The research on sea sand in Guangdong Province is mainly the research on the method of removing chloride ions, including alkaline solution washing and tap water washing, but there are many problems. First, the existence of chloride ions cannot be eradicated. Second, the cost of cleaning is relatively high, and the prospect of industrial production is not obvious

Images