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Layered buffer energy absorption structure body for EMAS (Engineered Material Arresting System) and preparation method

A structural and layered technology, applied in the direction of roads, special pavements, roads, etc., can solve the problems of structural damage of landing gear, no strength gradient, EMAS arresting effect can not take into account the weight difference, etc., to meet the arresting effect and safety. , The processing technology is simple, the effect of ensuring the blocking effect and blocking safety

Active Publication Date: 2019-10-18
HANGKE TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For example, the published patent "A Silicate-based Lightweight Foamed Concrete" (application number: 201710311732.6) and the published patent "A Silicone Foaming Composition and a Silicone Porous Foaming Material Prepared from the Foaming Composition" ( Application number: 201710010946.X), at present, EMAS characteristic materials have no strength gradient, and the EMAS arresting effect cannot take into account models with large weight differences
That is to say, for arresting large aircraft, EMAS design generally selects characteristic materials with higher compressive strength to provide greater arresting force. At this time, if a small aircraft rushes into the arresting bed, due to its low tire pressure , so it may not be able to crush the characteristic material so that there is no arresting effect, or it may crush the characteristic material at a certain depth, and it may also cause damage to the landing gear structure of small aircraft due to the high arresting force.

Method used

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  • Layered buffer energy absorption structure body for EMAS (Engineered Material Arresting System) and preparation method
  • Layered buffer energy absorption structure body for EMAS (Engineered Material Arresting System) and preparation method
  • Layered buffer energy absorption structure body for EMAS (Engineered Material Arresting System) and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1 uses mechanical performance characteristics such as image 3 and Figure 4 The shown prefabricated foam concrete material is prepared into an EMAS unit body according to the prefabricated body bonding method and applied in the EMAS system.

[0060] The specific steps are:

[0061] 1) According to the methods described in Example 6 and Example 8 of our unit's published patent "A Silicate-Based Lightweight Foamed Concrete" (Application No.: 201710311732.6), the prefabricated body of the foamed concrete material is prepared as the upper layer and the lower layer, respectively. The dimensions are all length 1m×width 1m×height 25cm, the strength is 0.24MPa and 0.49MPa respectively, the maximum crushing degree is 0.72 and 0.74 respectively, and the stress-crushing degree curve is as follows image 3 and Figure 4 shown;

[0062] 2) Apply ordinary portland cement paste or silicone adhesive (Chengdu Tuoli Technology Co., Ltd., model TQ-100PN) evenly on the cont...

Embodiment 2

[0072] Example 2 A layered buffer energy-absorbing material with foamed concrete as the upper layer and silicone foam as the lower layer was prepared according to the layered pouring method, and applied to the EMAS system.

[0073] The specific steps are:

[0074] 1) According to the method described in Example 1 of our unit's published patent "A Silicone Foaming Composition and a Silicone Porous Foaming Material Prepared from the Foaming Composition" (Application No.: 201710010946.X) to prepare porous foam Foam silicone material, the thickness is 25cm, the strength is 0.54MPa, the maximum crushing degree is 0.83, and the stress-crushing degree curve is as follows Figure 11 shown;

[0075] 2) After the organic silicon material of the lower layer is cured, according to the method described in Example 6 of our company's published patent "A Silicate-based Lightweight Foamed Concrete" (application number: 201710311732.6), pour foam concrete directly on the organic silicon materi...

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Abstract

The invention discloses a layered buffer energy absorption structure body for an EMAS (Engineered Material Arresting System) and a preparation method. The layered buffering energy absorption structurebody is formed by bonding buffer energy absorption materials with different strength from top to bottom, and the strength of the different layers increases from top to bottom. The preparation methodcomprises the following step of bonding each layer of material according to the strength being increased sequentially from top to bottom, wherein the bonding mode is a prefabricated body bonding typeor a layered pouring type. According to the layered buffering material disclosed by the invention, aircrafts with different specifications can be effectively blocked, and the preparation method is simple.

Description

technical field [0001] The present invention relates to the professional field of material engineering and application, and furthermore, relates to a layered buffer energy-absorbing structure and a preparation method for an engineered material arresting system (Engineered Material Arresting System, EMAS for short) at the end of an airport runway. Background technique [0002] Statistical data both at home and abroad show that among the accidents that seriously endanger the safety of civil aviation flight, the aircraft overshooting / deviating from the runway ranks first. important. However, due to the constraints of geography or other environmental factors, it is difficult for many airports to meet the length requirements of the new runway end safety zone, which has caused great hidden dangers of flight safety accidents. Considering the possible serious consequences of an aircraft running off the runway, EMAS system research has been carried out at home and abroad. EMAS uses...

Claims

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Application Information

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IPC IPC(8): E01C9/00
CPCE01C9/00
Inventor 赵阳史亚杰李明金浪孔祥骏刘平姚红宇
Owner HANGKE TECH DEV
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