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An anti-shock structure and its determination method

A technology of structural parameters and protection department, applied in the field of anti-strike structure and its determination, can solve the problems of weak urban air defense capability and urban emergency evacuation capability, and achieve the effect of guaranteeing emergency refuge, saving construction time, and strengthening the safety barrier

Active Publication Date: 2021-11-23
SOUTHWEST JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-strike structure and its determination method for the existing urban air defense capability and the weak urban emergency evacuation capability in the prior art

Method used

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  • An anti-shock structure and its determination method
  • An anti-shock structure and its determination method
  • An anti-shock structure and its determination method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as Figure 1-5 As shown, an anti-shock structure according to the present invention includes a protection part 3 , an energy dissipation part 2 and a reinforcement part 1 sequentially connected from bottom to top.

[0055] Such as figure 1 and 5 As shown, the protective part 3 includes a top plate 31 and at least one tank body 32, the tank body 32 is connected to the bottom of the top plate 31, a first filling body 33 is arranged around the tank body 32, and the first filling body 33 is arranged around the tank body 32. The filling body 33 supports the roof 31, the tank body 32 is used for emergency refuge, the tank body 32 is a prefabricated reinforced concrete tank, the roof 31 is a prefabricated reinforced concrete slab, and the first filling body 33 is Cast-in-place reinforced concrete structure.

[0056] Such as figure 1 , 3 As shown in and 4, the energy dissipation part 2 includes a steel truss 21, a second filling body 23 and several energy dissipation ...

Embodiment 2

[0062] Such as Figure 1-5 As shown, a method for determining an anti-strike structure according to the present invention includes the following steps:

[0063] Step 1, according to GB 50038-2005 design specification for civil air defense basement, determine the energy w generated by the accidental strike load 4 after strike;

[0064] The maximum pressure P of the explosive dynamic load on the top of the air defense basement structure c1 and boost time t 0h It can be calculated according to the following formula:

[0065] P c1 =KP h

[0066]

[0067] The energy generated after the impact of the accidental impact load 4:

[0068] w=P c1 ·t 0h

[0069] In the formula, w—the energy generated by the accidental impact load 4, P c1 —The maximum pressure of the explosion dynamic load on the top of the air defense basement structure (kN / m 2 ), K—comprehensive reflection coefficient of top explosion dynamic load, P h —Maximum pressure of compression wave in explosive soi...

Embodiment 3

[0093] In a further embodiment of the present invention, we verify the feasibility of the large energy that the above-mentioned top-level structure can consume and the design method thereof by a calculation example. In this embodiment, the national standard formula is used to calculate energy: energy (J)=(average Strength x thickness x width (mm)) / 1002. Unit: kg-cm / cm 2 Meaning: The ratio of the energy absorbed by the sample during the impact failure process to the original cross-sectional area. The origin of 1002: Because 1 Joule = 10.2kg.cm, it is necessary to convert the energy unit from kg.m to kg.cm, that is, because the unit of thickness and width of 10.2kg.cm is mm, the unit needs to be converted to cm, because when calculating Divided by the area, it needs to be enlarged by 100 times, so 10.2kg.cm×100=1002.

[0094] Assume that the thickness of each layer of the anti-strike structure in the underground space is 2.0m, and the total thickness is 6.0m. The length is 5m...

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Abstract

The invention discloses an anti-strike structure and a determination method thereof. The structure includes a protection part, an energy dissipation part and a reinforcement part connected sequentially from bottom to top; the protection part includes a top plate and at least one groove body, the groove body is connected to the bottom of the top plate, There is a first filling body around the tank body, the first filling body supports the roof, and the tank body is used for emergency refuge; the energy dissipation part includes steel trusses, a second filling body and several energy dissipation holes, and the second filling body The bottom is connected to the roof, the top is connected to the bottom of the reinforced part, the steel truss and energy dissipation holes are embedded in the second filling body, and the bottom of the steel truss is connected to the roof. Through the reinforcement part, the energy dissipation part and the protection part, the load is gradually and gradually consuming vertically, and the energy is consumed to prevent the upper part of the underground structure from being deformed too much when it resists the load. It can effectively strengthen the safety barrier of the underground structure, save the construction time of the structural system, and is convenient Installation and dismantling can improve construction efficiency, effectively guarantee emergency refuge in underground space, and increase the safety of underground space.

Description

technical field [0001] The invention relates to the field of emergency refuge, in particular to an anti-strike structure and a determination method thereof. Background technique [0002] In the previous urban underground space structure system, the planning and design of emergency refuge space, the ability to deal with urban air defense and urban emergency evacuation capabilities are far from sufficient, the functions of urban protection and disaster prevention have not been unified, and a city under unified leadership has not yet been formed. Comprehensive air defense and disaster prevention system to realize the integration and integration of urban air defense and disaster prevention. This has seriously affected the safety of the urban underground space, and it is necessary to find an effective anti-strike structure. Contents of the invention [0003] The object of the present invention is to provide an anti-strike structure and a determination method thereof for the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/045E04H9/12G06F30/13
CPCE02D29/045E04H9/12
Inventor 肖清华雷升祥熊强李文胜李庆韩翔宇袁文朱洪江丁猛何亚涛邱泽民吴东宇李聪明陈乔枫赵伟
Owner SOUTHWEST JIAOTONG UNIV
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