为减少由光照强度差异引发的交通事故,以新伊高速公路工程为依托,在宋家凹—水沟河毗邻隧道连接段设置钢筋混凝土与钢结构组合形式的遮阳棚,计算限行速度下遮阳棚的长度,运用 DIALux 仿真软件对不同时间点下的 2 种工况进行研究,并采用碳排放因子法分析不同工况下的碳排放量.结果表明:该毗邻隧道连接段遮阳棚长度为 100 m.设置遮阳棚后,路面照度降低率达到 57.97%,照度总均匀度大于 0.4,现场实测值与模拟值误差在 10%范围内,均满足相关标准的要求.此外,设置遮阳棚后,每年减少碳排放量 82.56 t CO2 e,运营 2.8 a后可弥补建造时产生的碳排放,建设成本将在 3.7 a 后收回.在使用寿命期内,可减少碳排放量 3 795.74 t CO2e,节约成本 577.31 万元,实现了减排和节约成本的双重效果.
Light Environment and Carbon Reduction Analysis of Sunshade in Adjacent Tunnel of Xinyi Expressway
In order to reduce traffic accidents caused by light intensity differences,based on the Xinyi expressway project,a combined structure of reinforced concrete and steel structure was installed in the Songjiawa-Shuigouhe adjacent tunnel connection section.The length of the sunshade was calculated based on the speed limit,DIALux simulation software was utilized to investigate two working conditions at different time,and the carbon emission factor method was used to analyze the carbon emissions under different working conditions.The results show that the length of the sunshade in the adjacent tunnel connection section is 100 m.After the installation of the sunshade,the reduction rate of road illuminance reaches 57.97%,the overall illuminance uniformity is greater than 0.4,and the error between the on-site measured value and the simulated value is within 10%,both of them meet the requirements of the relevant standard.In addition,after the installation of the sunshade,the annual carbon emissions can be reduced by 82.56 t CO2e,the carbon emissions generated during construction can be offset after 2.8 a of operation,and the construction costs will be recouped after 3.7 a.During the service life,the carbon emissions are reduced by 3 795.74 t CO2e and the costs are saved by 5.773 1 million yuan,the dual effects of emission reduction and cost savings can be achieved.
国家科技期刊平台
NSTL
万方数据
维普
