Method for designing blast wall with multiplayer composite structure

A multi-layer composite and design method technology, applied to walls, building components, building structures, etc., to achieve the effects of reducing damage and personal injury, low cost, and scientific design

Inactive Publication Date: 2005-10-26
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the invention is to overcome the defects of the traditional single-layer concrete explosion-proof wal

Method used

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  • Method for designing blast wall with multiplayer composite structure
  • Method for designing blast wall with multiplayer composite structure

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Embodiment Construction

[0010] The design method and specific implementation steps of the multi-layer composite explosion-proof wall structure are described in detail below in conjunction with the technical scheme and accompanying drawings.

[0011] According to the design requirement that the explosion-proof wall can withstand the blast impact energy level, and based on the theoretical calculation and experimental test of the explosion impact, the parameters of the material, number of layers and thickness ratio of each layer of the multi-layer explosion-proof wall are determined, and the structure is optimized. For near-field explosion events within a radius of 20 meters from the explosion center of TNT explosives less than 100 kg, concrete-porous material-concrete three-layer explosion-proof wall structure can be selected, and the porous material layer should be rigid porous polyurethane with a density of 200-500Kg. m -3 Between, the design thickness is 50% of the entire wall size. For explosives ...

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Abstract

The designing method of the multilayer composite structure blast-proof wall of the present invention belongs to security and blast-proof fields combining technology, and relates to blast impact theoretical calculation and experiment testing research. Its characteristic is that the multilayer composite structure blast-proof wall is made from adding foaming concrete, flinty lacunaris polyurethane or other macromolecular lacunaris materials in the middle of the concrete wall body. Compared with the traditional blast-proof wall, the wall body structure adopts the three or five layer composite modality. According to the designing requirement that the blast-proof wall should be able to resist the detonation impacting energy, do optimizing design to the structure of blast-proof wall on the basis of theoretical calculation and experiment test, including the selection of blast-proof wall layers, the material depth proportion of every layer and lacunaris material. Its effect and benefit are that when occurring to close quarters detonation event, it can not only assure the whole structure intensity of blast-proof wall and resist high-speed impacting breakage, but also effectively attenuate the explosive shock wave energy, and is a further development to construction secure blast-proof technology.

Description

technical field [0001] The design method of the multi-layer composite explosion-proof wall of the invention belongs to the field of building safety explosion-proof. It not only involves the theory and application of explosion impact, but also the practical application technology of building explosion-proof engineering. Background technique [0002] Explosion-proof safety is a very important link for pyrotechnics manufacturers, important military facilities and embassies abroad, and it is also a research field that is currently concerned by countries all over the world. In order to reduce casualties and other losses caused by accidental explosions, according to the "Unified Standards for Building Structure Reliability", important building facilities such as pyrotechnics manufacturers and embassies need to set up explosion-proof walls made of reinforced concrete, and there will be explosions. The hazardous area is separated from other areas. When explosives explode, there ar...

Claims

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Application Information

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IPC IPC(8): E04B2/00
Inventor 王宇新顾元宪孙明
Owner DALIAN UNIV OF TECH
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