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Road trafficability evaluation method considering earthquake secondary fallen objects and fire disasters

A technology for road traffic and evaluation methods, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as not considering the joint action, not considering the impact of earthquake secondary throwing objects and fires, etc.

Inactive Publication Date: 2019-06-07
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

However, the existing methods mainly consider the impact of building earthquake collapse on roads, and do not consider the impact of earthquake secondary debris and fire, let alone the joint effect of the two secondary disasters

Method used

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  • Road trafficability evaluation method considering earthquake secondary fallen objects and fire disasters
  • Road trafficability evaluation method considering earthquake secondary fallen objects and fire disasters
  • Road trafficability evaluation method considering earthquake secondary fallen objects and fire disasters

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Embodiment Construction

[0035] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0036] The invention provides a road passability evaluation method considering earthquake secondary droplet and fire.

[0037] Such as figure 1 As shown, the method includes the following steps:

[0038] S1: Analysis of secondary falling objects in building earthquake: First, use the dynamic time-history analysis method to calculate the seismic response of building structures, and obtain floor response data, including inter-story displacement angle, velocity, acceleration, inter-story displacement, etc.; then, carry out enclosure Judgment of structural damage of components; finally, calculation of the distribution of dropped objects;

[0039] S2: Building earthquake secondary fire analysis: use the calculation results of the building structure seismic ...

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Abstract

The invention provides a road trafficability evaluation method considering earthquake secondary fallen objects and fire disasters, and belongs to the technical field of civil engineering disaster prevention and reduction. The method comprises the steps of determining firstly, the distribution range of building earthquake secondary fallen objects according to nonlinear time-history analysis and fallen object motion analysis, then simulating the fire spreading situation caused by a fired building through a secondary fire spreading model to obtain the influence range of a secondary fire; carrying out space-time evaluation on the influence of the secondary fallen objects and the secondary fire on the road to obtain an influence result of the single disaster type on the road; and finally, superposing the secondary falling objects and the fire influence, and giving a comprehensive road trafficability evaluation result. According to the method, the trafficability of the urban road network under earthquake secondary falling objects and fire disasters can be predicted, and a key decision basis is provided for pre-earthquake disaster prevention transformation and post-earthquake emergency rescue.

Description

technical field [0001] The invention relates to the technical field of disaster prevention and reduction in civil engineering, in particular to a method for evaluating road trafficability considering secondary droplets and fires caused by earthquakes. Background technique [0002] The population density of cities is very high, especially in super-large cities. Once an earthquake occurs, it will inevitably cause serious losses. After an earthquake, the trafficability of urban roads is crucial for rescue and evacuation. As a channel for material transportation, the urban road traffic network is the route for evacuating personnel, dispatching rescue personnel and engineering teams, and transporting disaster relief materials when an earthquake disaster occurs. [0003] In the current research work, the work on the impact of earthquakes on road traffic has been relatively sufficient, and many scholars have proposed corresponding calculation models based on different assumptions ...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06Q10/06G06Q50/08G06Q50/26
Inventor 许镇靳伟
Owner UNIV OF SCI & TECH BEIJING
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