A noise-reducing green belt constructed with phononic crystals

A technology of phononic crystals and green belts, applied in application, cultivation, agriculture, etc., can solve problems such as poor greening effect and complex structure, and achieve the effects of reducing interface reflection, enhancing absorption capacity, and reducing noise leakage

Active Publication Date: 2022-05-10
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of sound insulation and noise reduction of green belts, there are few current studies. For example, the announcement number CN205399249U discloses a kind of vegetation noise reduction and sound insulation wall for municipal construction. good

Method used

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  • A noise-reducing green belt constructed with phononic crystals
  • A noise-reducing green belt constructed with phononic crystals
  • A noise-reducing green belt constructed with phononic crystals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The sound-insulating and noise-reducing green belt constructed of phononic crystals in this embodiment is composed of several units, one unit is composed of 32 trees, and the number of its lattice coefficients is two types, which are planted according to the following array; five rows are arranged in rectangles, and the width The middle row in the direction only has one variety at both ends, and the rest has a cavity. There are two rows from both sides of the cavity in the width direction, and each row is 8 and 7 in turn. The outer rows of trees are slightly more spaced. The number of units is determined according to the length of the green belt.

Embodiment 2

[0021] The sound-insulating and noise-reducing green belt constructed of phononic crystals in this embodiment is composed of several units, one unit is composed of 86 trees, and the number of its lattice coefficients is three, planted according to the following array method; seven rows are arranged in a rectangular shape, and the width The middle row in the direction only has one variety at both ends, and the rest have cavities. In the width direction, there are three rows from both sides of the cavity, and each row is 15, 14 and 13 from the outside to the inside. The number of units is determined according to the length of the green belt.

Embodiment 3

[0023] The sound-insulating and noise-reducing green belt constructed of phononic crystals in this embodiment is composed of several units, one unit is composed of 118 trees, and the number of its lattice coefficients is four, planted according to the following array; nine rows are arranged in a rectangular shape, and the width The middle row in the direction only has one variety at both ends, and the rest have cavities. In the width direction, there are four rows from both sides of the cavity, and each row is 16, 15, 14 and 13 from outside to inside. . The number of units is determined according to the length of the green belt.

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Abstract

A noise-reducing green belt adopting a phonon crystal structure is formed by planting a certain number of trees in a special array, and the array forms a specific phonon crystal structure. In the noise-reducing green belt of the phonon crystal structure, the scatterer (1) is green vegetation, and the substrate (2) is air. The special array method is a rectangular structure, which consists of 2n rows of trees arranged in parallel in sequence, and n rows of trees parallel to each other form a group, and the distance between two groups of n rows of trees is one row of trees, forming a rectangular middle cavity (3) . n is 2~5. The certain number is 32-180. The number of the lattice coefficients is two, three, four or five. The present invention adopts the design of the middle cavity to effectively capture the incident noise and reduce the noise leakage, thereby enhancing the sound insulation and noise reduction capabilities; the present invention uses vegetation as the scattering body to ensure beautiful greening, air purification, environmental protection and energy saving; and the air as the The base ensures good air circulation.

Description

technical field [0001] The invention belongs to the technical field of novel sound insulation and noise reduction, and specifically relates to the design of a sound insulation and noise reduction green belt adopting a phonon crystal structure, which is used for sound insulation and noise reduction, beautiful greening, environmental protection and energy saving. Background technique [0002] Noise pollution is currently one of the most important sources affecting the quality of human life. How to effectively control noise pollution has become one of the research hotspots in the field of environmental protection. The materials or structures used in the current sound insulation and noise reduction technical scheme can be mainly divided into three categories: rigid materials (such as the public number CN105863116A discloses a double-layer square steel sound insulation wall structure and its installation method, and the public number CN104805916A discloses a building thermal insu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G17/00
CPCA01G17/005
Inventor 杨爱超朱亮李敏吴宇刘见李东江靳绍平张春强
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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