Stud connection structure for noise reducing wall

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Solution Overview

Problem

Conventional noise reducing wall systems face limitations in improving sound insulation performance beyond a certain level, requiring significant design changes and increased costs, making it difficult to achieve desired sound reduction levels.

Innovation Solution

A noise reducing wall system with a newly designed stud connection structure featuring a stud bolt with a bent portion in the thickness direction, which allows for elastic deformation and increased friction between the stud bolts and heat insulation member, improving sound insulation performance without altering the overall thickness or design of existing systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the gap size between board layers is increased to improve sound insulation, then sound insulation performance is improved, but the overall thickness of the wall system increases

Engineering Contradiction:

Improvesound insulation performanceVSAvoidwall thickness

Core Design Contradiction:

Object-affected harmful factorsVSLength of stationary object

Solution Approach 1:

The stud bolt includes a bent portion (curved section) instead of a straight configuration. This curvature allows the bolt to follow a non-linear path through the wall assembly, enabling it to connect board layers at different positions while maintaining a compact overall thickness. The bent shape creates frictional contact along the curve, enhancing sound insulation without requiring increased wall thickness.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The stud bolt transitions from a one-dimensional straight line to a two-dimensional curved path. By introducing curvature in the thickness direction, the bolt engages with board layers at multiple points along its length, creating distributed frictional resistance to sound transmission while maintaining space efficiency in the thickness dimension.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If the thicknesses of board layers are increased to improve sound insulation, then sound insulation performance is improved, but material cost and weight increase

Engineering Contradiction:

Improvesound insulation performanceVSAvoidwall weight

Core Design Contradiction:

Object-affected harmful factorsVSWeight of stationary object

Solution Approach 1:

The curved portion of the stud bolt creates an extended friction interface without requiring thicker board layers. The frictional force generated along the curved path counteracts sound vibration transmission, achieving sound insulation performance improvement while maintaining the original board layer thicknesses and thus controlling weight.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Solution Approach 2:

The invention changes the geometric parameter of the stud bolt from straight to bent, transforming its interaction mechanism with the board layers. This parameter change enables the bolt to generate sufficient frictional resistance to sound transmission without increasing the mass or thickness of the board layers themselves.

Inventive Principle:

Principle #35Parameter changes

3Object-affected harmful factors

If a double noise reducing wall system is used to improve sound insulation, then sound insulation performance is improved, but design complexity and cost significantly increase

Engineering Contradiction:

Improvesound insulation performanceVSAvoidwall system complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The bent stud bolt provides enhanced sound insulation within a single wall assembly, eliminating the need for a double wall system. The curved configuration creates multiple friction contact points that effectively block sound transmission, achieving performance comparable to or exceeding double wall systems while maintaining design simplicity and reducing overall system complexity.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system achieves enhanced sound insulation performance across various frequency ranges with minimal design changes and cost increases, offering a cost-effective solution for improving noise reduction in industrial settings.

Implementation Method 1

a stud bolt with a bent portion in the thickness direction, which allows for elastic deformation and increased friction between the stud bolts and heat insulation member

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Implementation Method 2

a heat insulation member surrounded by the first and second board layers

Methodology Applied

Scientific EffectAcoustic absorption: Acoustic Absorption

Data Source

PatentUS10982434B2Stud connection structure for noise reducing wall

Publication Date: 2021.04.20 DOOSAN HEAVY IND & CONSTR CO LTD

AI summary

A noise reducing wall system is provided. The noise reducing wall system includes first and second board layers facing in parallel with each other along a longitudinal direction thereof, a heat insulation member surrounded by the first and second board layers, and a stud connection structure that fastens the first and second board layers using a stud bolt passing through the heat insulation member to connect the first board layer and the second board layer. The stud bolt connects the first and second board layers in a thickness direction and has a bent portion extending in the longitudinal direction and disposed at an intermediate point in the thickness direction.