Reinforced structure of thin-wall hydraulic structure and reinforcing method

Abstract

The invention discloses a reinforcing method for a thin-wall hydraulic structure. The reinforcing method comprises the steps of firstly grinding and cleaning the surface of an aqueduct; drilling the position connectors are inserted and implanting the connectors through an inorganic embedded steel bar glue, wherein the connectors are evenly distributed in the longitudinal direction of an aqueduct body and unevenly arranged in the transverse direction of the aqueduct body in a U-shaped mode; rebinding a steel bar mesh, enabling mesh nodes of the steel bar mesh to adhered tightly and fixedly connected with the connectors; recoating an interface agent, plastering a cement mortar material and finally performing calendaring and moisture-preserving maintenance to finish reinforcement on the thin-wall hydraulic structure. The finally-obtained reinforced structure comprises an aqueduct body primary structure layer and a reinforced structure layer, wherein a steel bar mesh layer is arranged in the reinforced structure layer, and the connectors penetrating the combined face formed by the reinforced structure layer and the aqueduct body primary structure layer is arranged at the position of the combined face. By adopting a reinforcement measure, the aqueduct body primary structure layer and the reinforced structure layer can jointly take participate in stress work, and accordingly the purpose of reinforcing the thin-wall hydraulic structure is achieved.

Description

technical field [0001] The invention relates to a method for reinforcing thin-walled aqueducts or other similar hydraulic structures under the condition of insufficient bearing capacity or durability, in particular to a method for reinforcing thin-walled hydraulic structures with cement mortar and steel mesh Reinforcement structure and method. Background technique [0002] Thin-walled hydraulic structures widely exist in the practice of farmland water conservancy projects in my country, but such hydraulic structures built in the early stage generally have great safety hazards due to disrepair and lack of maintenance. [0003] Let's take the aqueduct as an example. The aqueduct is an overhead water delivery structure built in the form of an open channel and crossing mountains, depressions, mountains, roads and other obstacles. It can guide the channel water to irrigate farmland, which is of great significance to agricultural production. Due to the long-term effect of unfavor...

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Problems solved by technology

However, these two existing methods have their own limitations: from previous engineering experience, the durability and aging resistance of the aqueduct reinforced with epoxy resin paste glass fiber cloth have not been significantly improved, the anti-seepage effect is not good, and the construction is complicated and costly. Due to the influence of materials, construction and other factors, the bonding performance of the interface between glass fiber cloth and the original structure layer of the aqueduct is poor; while the reinforcement method using carbon fiber, due to the lack of sufficient ductility of carbon fiber, it will be destroyed when the ultimate strength is reached. It is a brittle failure, and the cost of carbon fiber reinforcement is relatively high

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