Hydraulic concrete structure composite prestress reinforcing system and construction method thereof

Abstract

The invention discloses a hydraulic concrete structure composite prestress reinforcing system and a construction method thereof, and relates to the field of hydraulic concrete structure reinforcing systems. The hydraulic concrete structure composite prestress reinforcing system comprises a prestress carbon fiber board. The two ends of the prestress carbon fiber board are respectively fixed to thebottom ends of a hydraulic concrete T-shaped beam by a first anchoring mechanism and a first tensioning mechanism. The hydraulic concrete structure composite prestress reinforcing system further comprises at least two prestress steel strands. The prestress steel strands are symmetrically fixed below the partitioning plates on two lateral faces of the bottom of the hydraulic concrete T-shaped beam.One ends of the prestress steel strands are connected with a second tensioning mechanism, and the other ends of the prestress steel strands are connected with a second anchoring mechanism. The construction method comprises the following steps that paying off and positioning are conducted, base surface processing is conducted, anchoring tool mounting is conducted, prestress carbon fiber board andprestress steel strand mounting and laying are conducted, glue preparation and carbon fiber board binding element applying are conducted, prestress tensioning and locking are conducted, and surface sealing processing is conducted. The invention provides the hydraulic concrete structure composite prestress reinforcing system and the construction method thereof, strength and stiffness of the structure are effectively improved, the bearing capacity of the structure is improved, deflection deformation of the structure is reduced, and the function of reducing and sealing cracks is achieved.

Description

technical field [0001] The invention relates to the technical field of reinforcement systems for hydraulic concrete structures, in particular to a composite prestressed reinforcement system for hydraulic concrete structures and a construction method thereof. Background technique [0002] Hydraulic concrete structures (aqueducts, water inlet towers, traffic bridges and working bridges, factory buildings, etc.) are overloaded, insufficient reinforcement area, small structural section, various damages and other reasons (such as reconstruction and expansion, grade improvement, etc.) The designed structure has insufficient bearing capacity or has structural cracks. In order to ensure the safety of the structure and restore its normal function, it must be reinforced. [0003] Traditional concrete structure reinforcement methods include: increasing the cross-section, sticking steel, pasting carbon fiber composite materials, planting bars, external prestressing, etc., but there are...

AI Technical Summary

Problems solved by technology

Most of the existing external prestressed reinforcement uses prestressed steel strands as the prestressed system. The external prestressed reinforcement of steel structures has problems such as small external cable tension, and relatively difficult corrosion and protection. The use of carbon fiber plate prestressed cables has the advantages of The material is light, high-strength, corrosion-resistant, and fatigue-resistant, so the use of carbon fiber materials as external prestressed cables can overcome the above problems

Carbon fiber materials have excellent tensile properties, but their shear resistance is poor, so they cannot be arranged on the side of the structure (such as the side of the beam), and cannot improve the lateral stiffness of the structure or close the lateral cracks. Side (such as the bottom of the beam)

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