Building Connection Sound Absorption Telescopic Load Transfer
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Solution Overview
Problem
Existing building connections made of concrete fail to effectively reduce sound transmission, particularly step sound, between prefabricated building elements, causing disturbances and irritation.
Innovation Solution
A building connection system comprising a load transfer element and a support box with sound-absorbing elements, where the load transfer element is telescopic and projects into a sound-absorbing support box filled with a filling material, ensuring no direct contact between concrete elements and minimizing sound transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If concrete building elements are directly connected, then structural strength and stability are improved, but sound transmission increases
Solution Approach 1:
A sound-absorbing element is introduced as an intermediary component between the first and second building elements. This element comprises a porous core structure filled with sound-absorbing material, allowing load transfer while absorbing sound energy through the porous structure and material damping.
Solution Approach 2:
The sound-absorbing element uses composite construction with a porous core structure (such as foam or honeycomb) filled with sound-absorbing material (such as mineral wool or fibrous material). This composite structure provides both mechanical strength for load bearing and acoustic absorption properties.
2Object-affected harmful factors
If sound-absorbing material is added to building connections, then sound transmission is reduced, but device complexity increases
Solution Approach 1:
The sound-absorbing element combines multiple functions into a single integrated component: it provides load transfer capability, sound absorption, and structural connection. This merging eliminates the need for separate sound insulation layers and connection elements, simplifying the overall assembly.
Solution Approach 2:
The sound-absorbing element serves multiple purposes simultaneously: it acts as a load-bearing connection element, a sound insulator, and a structural component that can be integrated into the building element design. This multi-functionality reduces the number of separate components needed.
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 effectively reduces sound transmission, especially step sound, by using sound-absorbing materials and a telescopic load transfer mechanism, creating a gap that prevents concrete-to-concrete contact and allows the filling material to move freely, thus damping sound.
Implementation Method 1
a first sound-absorbing element (52) which is arranged on the inner bottom wall surface (38) of the support box (33)
Implementation Method 2
allows the filling material to move freely, thus damping sound
Data Source
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AI summary
A building connection (10) is described comprising a first building element (12) and a second building element (30) arranged at a distance from each other, the first building element (12) being connected to the second building element (30) by at least one connecting device (15). The connecting device (15) comprises a load transfer element (24) arranged in the first building element (12), and a support box (33) molded into the second building element (30) and comprising an inner bottom wall surface (38) and a support box opening ( 34) facing the first building element (12). The connecting device (15) further comprises a first sound-absorbing element (52) arranged on the inner bottom wall surface (38) of the support box (33), and a support plate (58) arranged on top of the first sound-absorbing element (52). The load transfer element (24) projects from the first building element (12) and into the support box (33) through the support box opening (34) and a filling area (60), comprising the support box (33) and an area between the first building element (12) and the second the building element (30), is molded with a filling material (61).