Method for strengthening construction unit using high strength fibre cloth

Abstract

This invention discloses is a method of using high intensity fiber cloth for strengthening member. The cloth is anchored to the two ends of member after it is flattened. Then horizontal strain is done through horizontal stretching equipment between the two anchor ends. The anchor method is that the end of the cloth is rolled through a steel roller and then retraced, and it is nipped between two steel boards with the cloth, then they are fixed at end of consolidated pieces through high tensile bolt. Binding coat can be painted on member surface, then anchor and stretching is done before the glue of the binding coat doesn't solidify. Also using rubber belt to seal fiber cloth edge and member after anchor and stretching is done, compound lining hole is set at one end, and vent hole is set at the other end, structure glue is injected between fiber cloth and members through the hole. Stiffness and ultimate strength of the consolidated structure member can be increased by using the method in this invention, and the deformation in application stage can be recovered or part recovered and crack width of structure members can be reduced.

Description

technical field [0001] The invention relates to the application of high-strength fiber cloth in civil engineering, in particular to a method for reinforcing components with high-strength fiber cloth. Background technique [0002] Reinforced components refer to the basic structural components in civil engineering structures such as construction engineering and bridge engineering, such as beams, plates, columns, tie rods, plate shells and other stress units; structures need to be reinforced in the following cases: (1) The design is wrong or poor construction quality; (2) long service life or environmental factors cause structural function degradation; (3) changes in use functions (such as residential buildings, shopping malls, restaurants) or increased load levels (such as bridges); (4) original buildings are not Meet new design standards; (5) structural damage (overload, fire, after-earthquake, explosion, etc.); (6) other factors cause insufficient strength of the structure a...

AI Technical Summary

Problems solved by technology

[0002] Reinforced components refer to the basic structural components in civil engineering structures such as construction engineering and bridge engineering, such as beams, plates, columns, tie rods, plate shells and other stress units; structures need to be reinforced in the following cases: (1) The design is wrong or poor construction quality; (2) long service life or environmental factors cause structural function degradation; (3) changes in use functions (such as residential buildings, shopping malls, restaurants) or increased load levels (such as bridges); (4) original buildings are not Meet new design standards; (5) Structural damage (overload, fire, post-earthquake, explosion, etc.); (6) Insufficient structural strength and excessive deformation caused by other factors

In the prior art, the conventional method of high-strength fiber cloth for strengthening various structures is non-prestressed pasting. After further deformation, it can gradually play a role, so that the material strength of the high-strength fiber cloth cannot be fully exerted, the workability with the original structure is not good, and the overall reinforcement efficiency is low; (2) The conventional fiber cloth reinforcement technology cannot adjust the original structure. force condition, the improvement of the rigidity of the original structure is also very small

(3) The dispersion of the reinforcement effect is large, the surface state of the reinforced component, and the hysteresis viscous flow, easy aging, and poor thermal stability of the adhesive after hardening directly affect the long-term effect after reinforcement

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