Abstract
The recent earthquakes have caused serious damage to Chinese rural houses. Research on the seismic performance and reinforcement for traditional rural houses is strongly needed. In this study, the seismic performance of traditional brick-wood structural houses in Jiangxi province and surrounding areas is analyzed and confirmed by site investigation and numerical simulation. And, the traditional constructions, such as the purlin roof and the cavity wall, are considered. These construction types can reduce the seismic behavior of rural houses, and limited research has been carried out. This study found that the structure will produce plastic deformation and local damage above 6-degree earthquake fortification action. The damage positions occurred in the walls close to purlins and the walls close to doors and windows. Given the above seismic safety problems, a reinforcement method of reinforced cement mortar strip and mesh surface is proposed, which is suitable for engineering applications for traditional rural houses. The seismic strengthening effect is analyzed by numerical simulation. Comparing the calculation results, it is found that the seismic performance of the structure after reinforcement is significantly enhanced, and the stress concentration of the walls is improved.
Highlights
There are many problems in rural buildings in China, such as unreasonable structural design and nonstandard construction. ere is a great earthquake risk due to a lack of corresponding seismic design code for rural houses
Based on the earthquake investigation and numerical simulation, it is found that the seismic capacity of traditional brick-wood rural buildings in South China is insufficient
Under the earthquake action of 6-degree and 7degree fortification intensity in China, the structures raise plastic deformation as the increase of the peak ground acceleration. e structure has medium damage under seismic load with 6-degree fortification intensity. e structure is seriously damaged under seismic load with 7degree fortification intensity
Summary
There are many problems in rural buildings in China, such as unreasonable structural design and nonstandard construction. ere is a great earthquake risk due to a lack of corresponding seismic design code for rural houses. To master the seismic safety of traditional brick-wood structured buildings in Jiangxi Province and surrounding areas and cooperate with the national poverty alleviation and rural dilapidated houses reconstruction, this paper, combined with a large number of research studies and finite element numerical analysis, determined the seismic performance and seismic weak spots of this kind of structure and put forward the seismic reinforcement method suitable for this kind of buildings in this region. E survey found that the traditional brick-wood rural buildings in Jiangxi are highly seismic risk, and many safety problems are not conducive to earthquake resistance. E story height is 3.6 m, there is no floor between the stories (it belongs to the common structure of brick-wood rural buildings in Jiangxi Province and surrounding areas), and the cavity wall thickness is 240 mm.
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