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Study on Seismic Measures of Rural Farmer-built Multi-story Masonry Buildings

Author: JiaGuanHua
Tutor: ZouLiHua；YuanZhongXia
School: Lanzhou Jiaotong University
Course: Structural Engineering
Keywords: Rural self-built housing Masonry Buildings Seismic technology Damage characteristics and causes Finite Element Analysis
CLC: TU352.11
Type: Master's thesis
Year: 2011
Downloads: 68
Quote: 1
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Abstract


Damage survey found that the destruction of self-built housing in rural areas account for a large proportion of all the structures subjected to earthquake damage. Self-built multistory masonry buildings the rural common type of housing structure, its load-bearing elements mostly clay brick or perforated brick masonry into the wall, roof rafter the purlin system of huts cover or prefabricated reinforced concrete roof. However, due to the rural self-built multistory masonry buildings often do not have formal design and construction, random selection of building materials, the quality is difficult to guarantee, making the types of housing poor seismic performance. Therefore, to carry out rural multistory masonry buildings seismic technology research capability is of great significance for improving their seismic performance and enhance rural houses to withstand an earthquake disaster. Wenchuan 8.0 earthquake, for example, to select representative areas of rural self-built multistory masonry buildings in different intensity earthquake damage by using the number of words to describe, study earthquake only consider the structural vibration destroyed the failure characteristics of the types of housing in different intensity zones. At the same time, the paper summarizes the damage characteristics of rural self-built houses of brick masonry walls, the floor roof, the subsidiary structure of three main parts in different intensity zones. In addition, the wall as the main load-bearing elements of the masonry structure, characteristics and the mechanism of its destruction in the earthquake, became the focus of the earthquake damage surveys and research. In this paper, the wall failure characteristics in different intensity zones premise, summed up the extent of the damage of the wall of the housing damage morphology. And against the wall under the earthquake in shear - compression characteristics of composite stress state analysis of the correspondence between three types of cracks in the wall and shear failure type. Survey of self-built masonry buildings in rural areas of Gansu Province, the paper summarizes the many aspects of rural self-built multistory masonry buildings earthquake more prone to earthquake damage causes Unreasonable, house foundations processing these causes include a housing construction site selection is not correct, the housing does not comply with the requirements of the seismic concept design, wall due to earthquake damage and seismic design five houses not using. In addition, the article also details the strategies and methods to mitigate the above-mentioned causes caused by earthquake damage. In this paper, the three kinds of economic, simple and self-built housing using seismic technology for rural. The \monolithic wall of seismic technology nonlinear simulation calculation results show that this method can effectively improve the seismic performance of masonry wall. addition, the use of finite element software ANSYS verified using sand cushion base isolation technology the isolated effects of the three-brick building. calculations show that the structure of the natural period of vibration isolation layer growth, effective attenuation of ground motion, and played the isolation effect and improve the seismic performance of multistory masonry buildings.

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CLC: > Industrial Technology > Building Science > Building structure > Special Structure > Anti - shock structure,disaster prevention structures > Shock, isolation, and explosion-proof structure > Seismic structure
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