Schoolhouse in-vitro reinforcing and strengthening method of prefabricated perforated plate brick mixed structure

Abstract

The invention provides a schoolhouse in-vitro reinforcing and strengthening method of a prefabricated perforated plate brick mixed structure. The method includes the steps that latticed structure limb column construction and independent brick column reinforcement are carried out; vertical reinforcing band rebar binding and horizontal reinforcing band rebar binding are carried out; a steel bracket is installed, and structural cracking is treated; a cantilever beam and a proscenium beam are subjected to rebar embedding; a simply supported cross beam is subjected to carbon fiber cloth reinforcing construction, and wall cracks are repaired; door and window holes are subjected to rebar binding reinforcing; reinforcing treatment of double-faced reinforcing mesh cement mortar clamping plates is carried out; leakage treatment is carried out; a cracked prefabricated floor surface layer is repaired; waterproof treatment is carried out. The technology is advanced, the process is simple, less building garbage is generated, the construction period is short, economic benefits and social benefits are very remarkable, and popularization and application prospects are wide.

Description

technical field [0001] The invention relates to the field of construction engineering, in particular to the technical field of old building reinforcement. Background technique [0002] After experiencing the catastrophe of the Wenchuan Earthquake, the building structure industry finally realized clearly that low design standards are "genetic defects" "lurking" in the whole life cycle of buildings. Design and durability design standards are too low. Due to historical reasons and the constraints of economic development, the construction standards of primary and secondary schools in the vast rural areas and some cities in my country are too low, the building quality is not high, and the comprehensive disaster prevention ability is poor. Security risks. According to preliminary statistics, there are still about 120 million square meters of school buildings in my country that need to be reinforced. Most of these school buildings are prefabricated porous slab brick-concrete structu...

AI Technical Summary

Problems solved by technology

[0002] After experiencing the catastrophe of the Wenchuan Earthquake, the building structure industry finally realized clearly that low design standards are "genetic defects" "lurking" in the whole life cycle of buildings. Design and durability design standards are too low. Due to historical reasons and the constraints of economic development, the construction standards of primary and secondary schools in the vast rural areas and some cities in my country are too low, the building quality is not high, and the comprehensive disaster prevention ability is poor. Security risks

According to preliminary statistics, there are still about 120 million square meters of school buildings in my country that need to be reinforced. Most of these school buildings are prefabricated porous slab brick-concrete structures or even empty bucket wall structures, and they were built earlier and have a longer service life. Requirements for anti-seismic fortification; these school buildings also have great differences in construction quality due to different construction years, and the reinforcement plan needs to be determined according to the investigation and appraisal results

The traditional reinforcement methods for a large number of prefabricated perforated slab brick-concrete structures generally adopt the method of adding structural columns and ring beams to the original wall structure, but they are all based on the full-length slotting of the original wall. It is carried out on the foundation, that is, the reinforcement method of moving tendons and removing bones is implemented on the original structure. The reinforcement process will destroy the integrity of the original wall and cause redistribution of internal forces, thereby reducing the original bearing capacity of the wall. Reinforcement measures, therefore, cannot achieve the desired reinforcement effect

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