Based on the efficient sound absorption characteristics of Helmholtz resonance structures in the range of medium and low frequency acoustic waves,this paper investigates an effective solution for light timber construc...Based on the efficient sound absorption characteristics of Helmholtz resonance structures in the range of medium and low frequency acoustic waves,this paper investigates an effective solution for light timber construction walls with acoustic problems.This study takes the light timber construction wall structure as the research object.Based on the Helmholtz resonance principle,the structure design of the wall unit,impedance tube experiment and COMSOL MULTIPHYSICS simulation calculation were carried out to obtain the change rule of acoustic performance of the Helmholtz resonance wall unit structure.The research results show that the overall stability of sound insulation of the structure is improved,and the frequency range with sound transmission loss more than 50 dB in the experimental group is 640–1600 Hz,while in the control group is 500–906 Hz and 1238–1600 Hz;the sound absorption performance of the structure is obviously better than that of the ordinary structure,especially in the low frequency acoustic wave range of 100–320 Hz,the sound absorption coefficient of the experimental group is more than 0.49,while the sound absorption coefficient of the control group is less than 0.1.It is expected that these results will contribute to the optimization of the acoustic performance of light timber construction walls and have high application and popularization value.展开更多
Despite the abundance of highly sustainable bamboo,people tend to overlook its structural performance for construction purposes.This paper therefore explores the potential of bamboo architecture to develop light-weigh...Despite the abundance of highly sustainable bamboo,people tend to overlook its structural performance for construction purposes.This paper therefore explores the potential of bamboo architecture to develop light-weight building systems and also to create an effect of lightness.Developed by a team at the School of Architecture of Southeast University,Bamboo Canopy is an outdoor stage canopy in Anji,China,that pushes the boundaries of bamboo as a material for building woven gridshell structure.The work is designed as a long-lifespan bamboo structure,with the design team and locals participating in its construction.Positioned on a public stage,Bamboo Canopy experiments with the combination of sustainable construction and local craftsmanship to produce a highly engaging architectural intervention that activates the existing place.With its wing-like form,it invites visitors to join the performance scene-as they approach the shell,the structure reveals itself-with a 12.4-metre span and 6-metre roof overhang,the canopy covers more than 150 square metres with only 1.2 square metres touching the ground.Through analysing the form,structure and details of this experimental project,this paper clarifies not only the potentiality but also the feasibilities in using bamboo for light construction.展开更多
文摘Based on the efficient sound absorption characteristics of Helmholtz resonance structures in the range of medium and low frequency acoustic waves,this paper investigates an effective solution for light timber construction walls with acoustic problems.This study takes the light timber construction wall structure as the research object.Based on the Helmholtz resonance principle,the structure design of the wall unit,impedance tube experiment and COMSOL MULTIPHYSICS simulation calculation were carried out to obtain the change rule of acoustic performance of the Helmholtz resonance wall unit structure.The research results show that the overall stability of sound insulation of the structure is improved,and the frequency range with sound transmission loss more than 50 dB in the experimental group is 640–1600 Hz,while in the control group is 500–906 Hz and 1238–1600 Hz;the sound absorption performance of the structure is obviously better than that of the ordinary structure,especially in the low frequency acoustic wave range of 100–320 Hz,the sound absorption coefficient of the experimental group is more than 0.49,while the sound absorption coefficient of the control group is less than 0.1.It is expected that these results will contribute to the optimization of the acoustic performance of light timber construction walls and have high application and popularization value.
基金support from the National Natural Science Foundation of China(No.51908113&51778122).
文摘Despite the abundance of highly sustainable bamboo,people tend to overlook its structural performance for construction purposes.This paper therefore explores the potential of bamboo architecture to develop light-weight building systems and also to create an effect of lightness.Developed by a team at the School of Architecture of Southeast University,Bamboo Canopy is an outdoor stage canopy in Anji,China,that pushes the boundaries of bamboo as a material for building woven gridshell structure.The work is designed as a long-lifespan bamboo structure,with the design team and locals participating in its construction.Positioned on a public stage,Bamboo Canopy experiments with the combination of sustainable construction and local craftsmanship to produce a highly engaging architectural intervention that activates the existing place.With its wing-like form,it invites visitors to join the performance scene-as they approach the shell,the structure reveals itself-with a 12.4-metre span and 6-metre roof overhang,the canopy covers more than 150 square metres with only 1.2 square metres touching the ground.Through analysing the form,structure and details of this experimental project,this paper clarifies not only the potentiality but also the feasibilities in using bamboo for light construction.
