Underwater pier composite material heavy anti-corrosion reinforcing structure based on harsh environment

Abstract

The underwater pier composite material heavy anti-corrosion reinforcing structure based on a harsh environment comprises a pile casing and a UHPC layer arranged between the pile casing and a pier in afilling mode, the pile casing is divided into a plurality of pile casing sections from top to bottom, and every two adjacent pile casing sections are fixedly connected through a first connecting piece; the pile casing section is formed by splicing at least two arc-shaped splice plates, the arc-shaped splice plates are made of PETG materials, and every two adjacent arc-shaped splice plates are fixedly connected through a second connecting piece. Due to the fact that the arc-shaped splice plates have good corrosion resistance and water impact resistance, and the UHPC layer has ultrahigh strength, the strength and the quality of the reinforced pier can be guaranteed.

Description

technical field [0001] The invention relates to an underwater bridge pier composite material heavy-duty anti-corrosion reinforcement structure based on severe environment, and belongs to the technical field of bridge pier restoration. Background technique [0002] Piers are the columnar structures that support the bridge and are used to support the span structure. Because underwater bridge piers are soaked in water for a long time, due to water erosion and environmental corrosion, it is easy to cause the bridge piers to suffer from concrete shedding, steel bars and other diseases, which makes the bearing capacity of the bridge piers insufficient and affects the structural safety of the bridge. Therefore, when the underwater pier is detected to be damaged, it needs to be repaired in time. [0003] The traditional method of underwater pier repair is to surround the pier with a steel casing, and then fill the grout from the top of the casing downwards, and the grout is usually...

AI Technical Summary

Problems solved by technology

However, this method has at least the following two defects: one is that the steel casing needs to be removed after the repair is completed, and it is time-consuming and laborious to remove the steel casing under water, thus resulting in a longer construction time; the other is that the grouting is filled from the top of the casing When filling, some air may be mixed in the grouting material. When the grouting material sinks under the action of gravity, the moisture extruded by the grouting material needs to be discharged from the top of the casing. Therefore, under the joint action of air and water, the filled grouting After solidification, there are gaps in the grouting material, which will cause the grouting material after solidification to be not dense, which will affect the repair effect of the bridge pier. Most of the bridge piers are constructed in the dry season, when the temperature is generally low, which brings difficulties to the construction

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