External ring beam and original structure wall body connected through L-shaped anchor bars and construction method

Abstract

The invention relates to an external ring beam and an original structure wall body connected through L-shaped anchor bars and a construction method. The L-shaped anchor bar, the external ring beam, a ring beam stirrup, a longitudinal steel bar and an anchor hole are included. The external ring beam forms a closed whole along the periphery of a building; the L-shaped anchor bars and the external ring beam are integrally cast; the anchoring depth of the L-shaped anchor bar in the original structure wall body is 150 to 200 mm; the anchor slurry of the L-shaped anchor bars in the anchor holes of the wall body is grouted by cement-based antirust mortar; the L-shaped anchor bars are suitable for being arranged on two sides of a door and window opening of an original structure wall, and the horizontal distance between the L-shaped anchor bars ranges from 1000 mm to 2000 mm. The L-shaped anchor bars, the external ring beam longitudinal steel bars and the ring beam stirrups are bound and poured together. The new structure and the old structure are reliably connected in a pulling mode, so that common stress is guaranteed, and stiffness mutation of each layer is prevented.

Description

technical field [0001] The invention relates to a connection between an external ring beam and an original structure wall by using an L-shaped anchor bar and a construction method, which belongs to the technical field of comprehensive transformation of existing buildings. Background technique [0002] At present, masonry structure houses are the main structural form in existing buildings in our country, accounting for more than 60% of civil buildings. However, due to the basic materials and connection methods of the masonry structure, the structural brittleness, small deformation capacity, and poor seismic performance have caused serious earthquake damage in previous earthquakes. Therefore, the research on the seismic reinforcement of masonry structures is an important problem to be solved in today's structural engineering. The most commonly used reinforcement method for masonry structures is the seismic reinforcement method using reinforced concrete ring beams, structural ...

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Problems solved by technology

However, due to the basic materials and connection methods of the masonry structure determine the structural brittleness, small deformation capacity, poor seismic performance and other shortcomings, the earthquake damage in previous earthquakes has been relatively serious

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