Influence Analysis Of Construction Noise Based On Cadna/A

The construction industry is a pillar industry of our country’s national economy.The development of the construction industry is inseparable from the construction of the workforce,and the construction and management of the workforce is based on the premise that the workers have a healthy body.However,it is found from engineering practice that workers’ health problems are prominent and can be easily overlooked.Factors affecting workers’ health include noise,harmful chemicals,dust,etc.Among them,noise has the greatest impact on workers’ health,and 63.41% of workers believe that noise brings serious harm to their own health.In recent years,research scholars have mainly focused on the impact of noise on the surrounding residents and the environment,they often ignoring that workers in the construction site are the most direct victims of construction noise.This paper uses noise map technology to analyze the impact of construction noise on workers on the construction site,and seeks noise management solutions from the perspective of reducing the annoyance caused by noise to construction workers.The purpose is to improve the working environment of workers and improve workers’ Sound environment experience to protect workers’ occupational health.Firstly,through A large number of literature studies,this paper analyzes the application of noise map technology in the construction process,and uses Cadna/A software to draw dynamic noise map to show the noise pollution status of the construction site.Secondly,the influence degree of noise is measured according to the noise annoyance degree of the subjective evaluation index of noise,and 60.5d B(A)is selected as the threshold limit of noise annoyance degree in this paper in combination with the relevant experiments of noise annoyance degree.Then the correlation between annoyance and noise exposure time is analyzed and it is found that the duration of noise has a significant influence on annoyance.Finally simulation of noise impact analysis model,construction machinery noise prediction and draw a series of noise data,contrast of mobile machinery under two different route to complete the construction task of noise generated by the situation and analyze the evaluation index,the size of the construction machinery found along the route of noise in the working area when working 2 hours total duration was 4.65% lower than along the route 1 homework,excessive noise total duration by 8.65%.The results show that the noise generated by route 2 has a relatively small effect on the degree of annoyance of workers.This means that occupational health managers can reduce the noise annoyance duration of some workers by choosing the appropriate working location of the moving noise source.The results will provide a basis for noise management decision makers to make better noise management plans and reduce the noise exposure of construction workers.