Single-floor masonry residential building steel-frame canopy guard structure and construction method thereof

Abstract

The invention relates to a single-floor masonry residential building steel-frame canopy guard structure and a construction method thereof. A single-floor masonry residential building is provided with an original roof truss, the bottom surface of the original roof truss is provided with a reinforced steel frame, the reinforced steel frame consists of at least two external transverse steel beams, two external longitudinal steel beams, four external steel columns and an external foundation, the external longitudinal steel beams are arranged on the inner side of an original longitudinal wall, the external transverse steel beams are arranged on the outer side of an original gable wall, the end part of each external longitudinal steel beam is lapped on and fixedly connected with the external transverse steel beam to collectively form a contour which is identical to the plane shape of the original structure, the external steel columns are closely attached to the original gable wall or the original longitudinal wall, the top end of the external steel column is supported on the end part of the external transverse steel beam, and the bottom end of the external steel column is supported on the external foundation. Due to the adoption of the single-floor masonry residential building steel-frame canopy guard structure, under the situation that the application function of the original structure is not influenced, the anti-seismic performance is improved, good economic benefit and social benefit can be realized, the single-floor masonry residential building steel-frame canopy guard structure can be widely used for reinforcing the masonry residential building structure and particularly for reinforcing a stone house or a brick house which does not have the supporting column.

Description

technical field [0001] The invention relates to an old building reinforcement structure in the construction field and a construction method thereof, in particular to a single-layer masonry residential reinforcement structure and a construction method thereof. Background technique [0002] On September 7, 2012, a 5.7-magnitude earthquake occurred in Yiliang, Yunnan, and more than 30,000 houses collapsed. The direct economic loss caused by the disaster was about 3.7 billion yuan. This disaster exposed the weak earthquake resistance of Chinese rural houses to the fullest . The Yiliang earthquake caused us to see most of the houses collapsed as a whole. The reasons for the overall collapse are as follows: [0003] 1. A large number of houses with raw earth structure collapsed: the earth wall itself is not dense enough, and the horizontal shear force between the soil is very low, which will cause collapse in a slight earthquake. In addition, the roof truss is directly supported...

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Problems solved by technology

[0004] 2. Hollow block houses: Hollow block walls are not equipped with core columns and slabs, and the wall cannot be formed as a whole. The bonding area of ​​vertical and horizontal mortar joints between blocks is seriously insufficient, and lime plaster with very low strength is used. The horizontal force of the earthquake caused the overall collapse of the wall

The beams and purlins of the roof are hollow bamboo with low rigidity, and the connection between the rods is simple. During the earthquake, the horizontal shaking will cause the roof to fall apart and collapse as a whole.

[0005] 3. Houses with non-seismic hollow block wall and slab structure: this type of house has not taken any seismic measures, has no ring beams, structural columns, single-skin hollow brick walls, and has extremely poor vertical pressure bearing and horizontal seismic capacity. Most of the houses collapsed

[0006] 4. The non-seismic brick wall roof structure, the overall collapse is serious, the mortar strength of the brick wall masonry is low, and there is no anti-seismic measures for ring beams and structural columns, resulting in a serious lack of shear resistance of the wall, and horizontal shear failure occurs during earthquakes. The wall roof adopts the form of hard gable purlins, without independent support columns. When the wall collapses, the roof collapses with it

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