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A Calculation Method of Impact Force of Rolling Stone

A calculation method and technology of impact force, applied in the direction of calculation, special data processing applications, instruments, etc., can solve problems such as dimensional disharmony, and achieve the effect of high disaster prevention applicability

Inactive Publication Date: 2017-11-10
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of dimension disharmony in the existing calculation method of rolling stone impact force, the present invention provides a calculation method of rolling stone impact force with harmonious dimension and more accurate calculation results

Method used

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  • A Calculation Method of Impact Force of Rolling Stone
  • A Calculation Method of Impact Force of Rolling Stone
  • A Calculation Method of Impact Force of Rolling Stone

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Embodiment Construction

[0049] Adopt formula one and formula two provided by the invention to verify other experiments at home and abroad: figure 1 Among them, Yang Qixin (Yang Qixin, Guan Baoshu. Experimental Research on the Calculation Method of Rockfall Impact Force [J]. Railway Journal, 1996 (1): 101-106) used a hammer to hit soft clay in the experiment, and used the formula one of the present invention to calculate the soft clay. The elastic modulus of the clay takes the middle value of the soft clay in Table 1: 3.5×10 6 Pa; Yuan Jinke (Yuan Jinke, Huang Runqiu, Pei Xiangjun. Research on Rolling Stone Impact Test, Rock and Soil Mechanics, 2014, 35(1): 48-54) experiments included experiments with 30-degree and 60-degree angles; Pichler et al. (B.Pichler , Ch.Hellmich.Impact of rocks onto gravel design and evaluation ofexperiments.International Journal of Impact Engineering, 2005(31):560-578) experiment is that 20 tons of granite fall on a compact gravel layer at a maximum height of 20 meters Abo...

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Abstract

The invention relates to a method for calculating the impact force of rolling stones, belonging to the fields of collapse, rockfall prevention and control engineering and water conservancy engineering. The impact calculation method of rolling stone of the present invention, comprises the following steps: (1) obtain rolling stone elastic modulus E1, the elastic modulus E2 of impacted object, calculate comprehensive elastic modulus E; (2) estimate rolling stone quality m, rolling stone The moving speed V, the angle θ between the moving direction of the rolling stone and the plane of the impacted object, calculate the impact force F of the rolling stone according to the formula F=0.261(Em2V4)1 / 3sin0.5θ. The present invention considers the basic principle of dimension harmony for the calculation of impact force, so the calculation method is suitable for large-scale actual calculation in the field, and has higher applicability for disaster prevention and mitigation of landslides and falling rocks.

Description

technical field [0001] The invention relates to a method for calculating the impact force of rolling stones, belonging to the fields of collapse, rockfall prevention and control engineering and water conservancy engineering. Background technique [0002] Collapse and rockfall are natural phenomena that occur in mountainous areas or on road slopes. After landslides and rockfalls occur, huge rocks roll down the hillside or the roadside, causing great damage to nearby residential buildings, factories and other construction facilities, or roads. [0003] At present, there are mainly three methods for calculating the impact force of rolling stones at home and abroad: 1) Calculating the impact force based on the energy of rolling stones, but this method does not consider the material characteristics of the impacting object and the impacted object. For the impact force calculation of different materials Lack of accuracy; 2) Taking the elastic modulus of the cushioning layer as the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 余斌易伟
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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