Method and system for acquiring slope earthquake damage stability loss probability

An acquisition method and slope technology, which is applied in the field of acquisition of the probability of seismic damage and instability of slopes, can solve the problem that the correlation of earthquake action is not intuitive enough

Active Publication Date: 2018-07-06
CHINA UNIV OF GEOSCIENCES (BEIJING)
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Problems solved by technology

[0005] (2) The relationship between the judgment of slope failure and instability and regiona

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  • Method and system for acquiring slope earthquake damage stability loss probability
  • Method and system for acquiring slope earthquake damage stability loss probability
  • Method and system for acquiring slope earthquake damage stability loss probability

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Embodiment Construction

[0074] The purpose of the present invention is to provide a method and system for obtaining the probability of slope earthquake damage and instability, so as to realize the comprehensive consideration of the uncertainty of earthquake action and the uncertainty of slope earthquake damage, and estimate the probability of slope earthquake instability .

[0075] In order to make the above objects, features and advantages of the present invention more comprehensible, the invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0076] Such as figure 1 As shown, the present invention provides a kind of acquisition method of slope earthquake damage and instability probability, and described acquisition method comprises the following steps:

[0077] Step 101, divide the azimuth with the slope site as the center, and obtain different azimuth domains;

[0078] Step 102, preset the ground motion acceleration threshold ...

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Abstract

The invention discloses a method and system for acquiring slope earthquake damage stability loss probability. The method includes: performing azimuth division by using a slope site as the center, presetting a seismic acceleration threshold changing in a certain range, calculating the exceedance probability, with the seismic acceleration generated by an earthquake at the slope site being larger than or equal to the seismic acceleration threshold, of each azimuth angle domain, and building a site seismic acceleration exceedance probability curve corresponding to each azimuth angle domain; building a slope numerical model; using a numerical simulation method to analyze the seismic capacity of the slope to given earthquake acting manners, and acquiring slope critical seismic acceleration corresponding to different azimuth angle domains; determining the slope earthquake damage stability loss probability according to the site seismic acceleration exceedance probability curves and the slope critical seismic acceleration. The method has the advantages that the uncertainty of earthquake action and the uncertainty of earthquake damage are comprehensively considered, and slope earthquake stability loss probability estimation is achieved.

Description

technical field [0001] The invention relates to the field of slope stability analysis, in particular to a method and system for acquiring the probability of slope damage and instability caused by earthquakes. Background technique [0002] At present, the estimation of slope instability probability mainly faces the following problems: [0003] (1) The estimation of the possible future earthquake action does not take into account the potential source orientation and specific mode of action. [0004] The current probabilistic seismic hazard analysis results for estimating the possibility of site earthquake action actually superimpose the joint impact of all potential seismic sources in the study area around the slope site on the site, which is the maximum earthquake impact that the site may suffer in the future (the worst case) , such an analysis result is relatively conservative in terms of engineering seismic safety, that is, it is uneconomical. In addition, the seismic act...

Claims

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Application Information

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IPC IPC(8): G01V1/28
CPCG01V1/28G01V99/00G01V1/008G01V1/282G06F17/18G01V2210/675G01V2210/665G01V1/288
Inventor 孙进忠郑旭辉熊峰邵安阳葛晓菲戴韶洋韩赛超许杰敏梁志华
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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