Construction Method of Self-resetting Concrete Frame with Enlarging Section and Reinforcing Earthquake-damaged Columns

Abstract

The invention discloses a self-reset concrete frame with section-increased reinforced earthquake damage columns and a construction method, and relates to a self-reset concrete frame and a constructionmethod in the civil engineering field. The problem that large interlayer lateral displacement, earthquake-caused permanent residual deformation, structural earthquake-caused damage and non-structuralcomponent damage caused by the excessive interlayer lateral displacement and the permanent residual deformation may still happen under a rare occurrence earthquake for ordinary section-increased reinforced earthquake damage columns is solved. The self-reset concrete frame is mainly composed of self-reset frame columns and frame beams. The self-reset frame columns are mainly composed of earthquakerepairing frame columns and reinforcing columns connected with the earthquake repairing frame columns into a whole. The reinforcing columns are composed of pin key ribs distributed in concrete and fixedly connected with the frame columns, stirrups distributed together with the pin key ribs alternately, longitudinal ribs connected with the stirrups, and prestress ribs anchored between a foundationand the frame beams. The construction method mainly includes the steps of firstly, establishing a reinforcing area; secondly, arranging the prestress ribs; thirdly, forming the self-reset concrete frame columns; fourthly, grooving the lower ends of the columns and filling grooves with fiber cement paste under pressure.

Description

technical field

[0001] The invention relates to a self-resetting concrete frame used in the field of civil engineering and a construction method, in particular to a self-resetting concrete frame capable of realizing low seismic damage or no seismic damage under rare earthquakes, and a self-resetting concrete frame for reinforcing seismic damage columns with an enlarged section and its implementation method. Background technique

[0002] For the different degrees of seismic damage of ordinary concrete frames that are widely used in large quantities after strong earthquakes, corresponding reinforcement technical measures should be taken according to the degree of damage. reinforcement measures. However, this post-earthquake reinforcement measure, which aims to ensure that the structure does not collapse under rare earthquakes and ensures safety after increasing the cross-section, still faces the problem of strengthening the structure under rare earthquakes or exceeding rare e...

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