Abstract
The paper involves the application of the surface geological method for regional site classification in Beijing. Geological maps are collected through GIS to create a relationship of classification between the geological factors of the geological maps and the site classification index of the US NEHRP code. First, the site classification of the US NEHRP is obtained, and based on the relationship of conversion, given by Chinese researchers, between the site classification of the US NEHRP and the China’s Code for Seismic Design of Buildings (GB50011-2010), the results of the site classification of Beijing are obtained based on China’s Code (GB50011-2010). Finally, based on the collected borehole data in Beijing, the results of the site classification map are verified and analyzed.
Highlights
Over the past decades, by investigating damages of destructive earthquake researchers have found that under the same conditions the earthquake damage varies with different site types
The site classification according to site characteristics and the adoption of reasonable ground motion parameters to meet the needs of seismic design is important to research in engineering sites
The method of site classification based on geological factors is to classify geological factors through regional geological maps, and to create a corresponding relationship of connection between the geological factors and site classification indicators
Summary
By investigating damages of destructive earthquake researchers have found that under the same conditions the earthquake damage varies with different site types. The United States began to study the impact of site conditions on the damages of earthquake through San Francisco earthquake happened the 1906. When China studied the damages caused by Tangshan Earthquake in 1976, it found that different site conditions had different effects on the earthquake. First implemented regional site classification by using geological factors as classification indicators and carried out such classifications in the San Francisco Bay Area and California. In China’s Taiwan, Li Xiti classified sites in Taiwan by adopting geological maps. The classification method of geological factors is ideal for regional site classification. In the paper, this classification method is used to classify the sites in Beijing, to obtain the site classification results applicable to the China's Code (GB50011-2010), and to. Analyze the results by collecting borehole data in the engineering sites
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