Reinforcement method of flat-end pier connection for damaged wooden columns based on frp bars

Abstract

The invention relates to a flat-end pier joint reinforcement method for damaged wooden columns based on FRP tendons, comprising the following steps: preparing a new wooden column with the same diameter as the damaged wooden column; processing the interconnected ends of the new wooden column and the damaged wooden column into a plane , and then, connect the new wooden column and the damaged wooden column through a flat head to form a column; an even number of slots arranged in the axial direction are evenly distributed on the circumference of the pier joint on the outer surface of the column, and half of the slots are opened on the new wooden column. The other half is set on the damaged wooden column; set a self-sensing FRP bar in each slot, and fill the adhesive between the self-sensing FRP bar and the slot; install old wooden strips at the outer end of the slot To block the slot; tie a mild steel strip at the pier joint end of the new wooden column and the damaged wooden column. The mild steel belt is located inside the slot end. This reinforcement structure is convenient for construction and retains the historical information of the original wooden column to the greatest extent. At the same time, it can also realize the reinforcement of wooden columns, and even self-monitoring.

Description

technical field [0001] The invention relates to a method for strengthening flat-end piers of damaged wooden columns based on FRP tendons. Background technique [0002] With the introduction of a series of policies and measures such as beautiful countryside construction, rural memory project, and rural revitalization strategy under the background of new urbanization, more and more attention has been paid to the protection of wooden structures such as ancient buildings and ancient dwellings. The common types of damage in wooden structures include node damage, column foot decay, and excessive deformation of flexural members. Among them, the most common damage is the wooden column foot decay caused by dry-wet cycles, moth-eaten decay, etc., and its repair is also difficult. tend to be larger. In many cases, the column is often directly replaced, which is not conducive to the repair and protection of traditional buildings, does not meet the repair and reinforcement principles of...

AI Technical Summary

Problems solved by technology

The common types of damage in wooden structures include node damage, column foot decay, and excessive deformation of flexural members. Among them, the most common damage is the wooden column foot decay caused by dry-wet cycles, moth-eaten decay, etc., and its repair is also difficult. tend to be larger

In many cases, the column is often directly replaced, which is not conducive to the repair and protection of traditional buildings, does not meet the repair and reinforcement principles of traditional buildings, and often has a great impact on its style; The pier joint reinforcement method is often limited by the parameters such as the pier joint length. It is often necessary to cut off a large part of the original wooden column to reinforce it. The material loss of the original wooden column is large, and the historical information of the original wooden column cannot be preserved to the greatest extent. Complicated, it is necessary to ensure that the size of the log and the new wood pier fit before it can be completed

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