| Experimental Study of Structure Shock Vibration in Soil Caused by Explosion of Conventional Weapons |
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| 作者姓名： | FENG Jinji XIE Qingliang ZHAO Dayong |
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| 作者单位： | School of Civil Engineering，Tongji University，Shanghai 200092，China; Luoyang Hydraulic Engineering Technical Institute，Luoyang 471023，China |
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| 摘 要： | When hitting underground structures directly or exploding in rock-soil media near underground structures, the conventional weapons with large charge weight will make underground structures be subjected to strong shock vibration and cause personal casualty and damage of precision electronic equipments. The shock vibration has become one of the cardinal killing means of weapons. However, the existing methods of predicting structure shock vibration are limited evidently. In this paper the coupling coefficient of acceleration in clayey soil is obtained firstly. Subsequently based on repeated experiments of chemical explosion, after dimension analysis and by using method of multivariate stepwise regression, the calculation formulae of shock vibration acceleration for the underground structure are obtained finally. The formulae consider top and side explosion respectively, taking into account the effects of penetration depth, charge weight, distance to explosion center, rock-soil media, size of structure and buried depth. They are easy to use with high practicability and degree of confidence, and can provide credible evidence for prediction of shock vibration and vibration isolating design of underground structure.
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Experimental Study of Structure Shock Vibration in Soil Caused by Explosion of Conventional Weapons |
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| FENG Jinji,XIE Qingliang,ZHAO Dayong.Experimental Study of Structure Shock Vibration in Soil Caused by Explosion of Conventional Weapons[J].Transactions of Tianjin University,2006,12(Z1). |
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| Authors: | FENG Jinji XIE Qingliang ZHAO Dayong |
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| Abstract: | When hitting underground structures directly or exploding in rock-soil media near underground structures, the conventional weapons with large charge weight will make underground structures be subjected to strong shock vibration and cause personal casualty and damage of precision electronic equipments. The shock vibration has become one of the cardinal killing means of weapons. However, the existing methods of predicting structure shock vibration are limited evidently. In this paper the coupling coefficient of acceleration in clayey soil is obtained firstly. Subsequently based on repeated experiments of chemical explosion, after dimension analysis and by using method of multivariate stepwise regression, the calculation formulae of shock vibration acceleration for the underground structure are obtained finally. The formulae consider top and side explosion respectively, taking into account the effects of penetration depth, charge weight, distance to explosion center, rock-soil media, size of structure and buried depth. They are easy to use with high practicability and degree of confidence, and can provide credible evidence for prediction of shock vibration and vibration isolating design of underground structure. |
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| Keywords: | explosion mechanics empirical calculating formula shock vibration acceleration coupling coefficient |
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