Determination method of the whole process horizontal bearing capacity of the device for improving the stability of brick columns in ancient buildings

Abstract

The invention discloses a device for improving the stability of an ancient building brick column and a method for determining its bearing capacity. The ancient building includes a brick column and a wooden beam on the top of the brick column. The device for improving the stability of the ancient building brick column includes: a U-shaped card , cables, anchors and pins; wherein, one or more cables are arranged on both sides of the brick column, one end of the cables is hinged with the anchors located under the inner side of the wooden beam through a pin, and the other end of the cables Go around the top of the brick column and place it in the U-shaped card on the wooden beam. After pre-tensioning the cable, the other end of the cable is fixed and hinged with the anchor piece located on the outside of the wooden beam. In terms of related structures, the U-shaped card is set on the top of the wooden beam, and the U-shaped card is pressed against the wooden beam by means of a pre-tension force applied by the cable. The device of the present invention does not destroy the brick column structure of the original ancient building, but at the same time can improve the horizontal bearing capacity of the original structure, and realizes the principle of minimal intervention and reversibility in the repair and protection of cultural relics.

Description

technical field [0001] The invention relates to the field of safety and stability of masonry masonry structures of ancient buildings, in particular to a method for determining the horizontal bearing capacity of the whole process of a device for improving the stability of brick columns of ancient buildings. Background technique [0002] Masonry ancient building materials are aging, and the cohesion between blocks is relatively small. Some ancient stone buildings are even dry-laid with no mortar between the blocks. The resistance to horizontal loads mainly depends on the friction force of the block interface and The cohesion between the blocks has the characteristics of nonlinear discrete bodies. It can be seen that the bearing mechanism of ancient building masonry structures is obviously different from that of modern masonry structures. Therefore, it is unscientific to use modern structural technology to evaluate the bearing capacity of masonry ancient building structures. . ...

AI Technical Summary

Problems solved by technology

[0003] At present, many reinforcement devices and methods aimed at the safety and stability of ancient buildings only focus on the safety of the elastic stage, while ignoring the structural mechanical properties of the ancient buildings from loading to destruction. They cannot fully reveal the mechanical characteristics of ancient buildings at each stage, and cannot meet the Safety requirements for ancient buildings under loads or deformations at various stages, such as the paper "Calculation of Seismic Performance of Ancient Masonry Pagodas", Northwest Seismological Journal, Supplement to Volume 33, August 2011

On the other hand, the repair, reinforcement, and maintenance of ancient buildings should try to keep the original style of the ancient buildings to ensure the authenticity of historical information. The current earthquake-proof methods are difficult to achieve the principle of minimal interference with the cultural relics. For example, the overall anti-seismic reinforcement method of masonry ancient pagodas disclosed in the invention patent CN104153596B, and the prestressed steel strip reinforcement device for the outer walls of ancient buildings disclosed in the patent CN201598846U

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