Device for improving ancient building brick column stability and bearing capacity determining method thereof

Abstract

The invention discloses a device for improving ancient building brick column stability and a bearing capacity determining method thereof. An ancient building comprises a brick column and a wood beam at the tops of the brick columns, and the device for improving the ancient building brick column stability comprises U-shaped clamps, inhaul cables, anchoring parts and pin shafts; one or more inhaul cables are arranged on each of the two sides of the brick column, one end of each inhaul cable is hinged to the corresponding anchoring part located below the inner side of the wood beam through the corresponding pin shaft, and the other end of each inhaul cable is wound around the top of the brick column and is placed in the corresponding U-shaped clamp on the wood beam, and after pretension forceis applied to the inhaul cables, the other ends of the inhaul cables are fixedly hinged to the anchoring parts located below the outer side of the wood beam; the anchoring parts are fixed to a structure irrelevant to the ancient building; and the U-shaped clamps are arranged at the top of the wood beam, and the pretension force is applied to the U-shaped clamps by virtue of the inhaul cables to generate pressure so that the U-shaped clamps cling to the wood beam. According to the device, an original ancient building brick column structure is not damaged, meanwhile, the horizontal bearing capacity of the original structure can be improved, and the principle of minimum intervention and reversibility of cultural relic building repairing protection is achieved.

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 device for improving the stability of brick columns of ancient buildings and a method for determining their bearing capacity. 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. . [0003] At present, many re...

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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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