大气防疫风环境模拟下探究传统街巷尺度对风环境的影响——以赣州市姚衙前街区为例  

Study on the Influence of Traditional Street Scale on Wind Environment under the Simulation of Atmospheric Epidemic Prevention Wind Environment:A Case Study of Yaoyaqian Block in Ganzhou City

作　　者：李诗蕾 廖梦琦 蔡丽蓉[1] 汪李娜 陶晓龙 

机构地区：[1]江西理工大学建筑与设计学院

出　　处：《建筑与文化》2024年第2期89-92,共4页Architecture & Culture

基　　金：省级大学生创新创业训练计划项目(项目编号:S202110407053);江西省高校人文社会科学研究项目(项目编号:JC21211);江西省教育厅科学技术研究项目(项目编号:GJJ200883)。

摘　　要：后疫情时代疫情防控进入常态化阶段,但是一些具有历史文化的“传统街区”,存在建筑布局紧凑、人口密集等共性问题,在防疫的通风需求方面存在较大隐患。为改善传统历史街区的风环境质量,有效抑制病毒传播,本研究以赣州市姚衙前历史街区为例,基于CFD技术运用斯维尔Vent对赣州市姚衙门前历史街巷进行大气防疫风环境模拟,分析街巷的高度、宽度、长度与地面粗糙度四要素对风环境的影响程度。根据模拟结果得出其对风速影响的权重排序为:街巷高度>宽度>长度,且街巷尺度的宽度为2~4m,高度为3~6m,长度为40~80m,地面粗糙度在0.5~0.75区间中,街巷内风速的影响最大。希望在后期传统历史街巷防疫风环境的改造时,采用某些措施能优化街巷通风能力以达到抑制病毒传播的要求。In the post-epidemic era,epidemic prevention and control has entered the stage of normalization.However,some "traditional streets" with history and culture have common problems,such as compact building layout and dense population,which pose great hidden dangers to the ventilation requirements of epidemic prevention.In order to improve the wind environment quality of traditional historic blocks and effectively inhibit the spread of viruses,this study took Yaoyaqian Historic Block of Ganzhou City as an example.Based on CFD technology and Swalvent software,this study simulated the air epidemic prevention wind environment of historic streets and streets in Yaoyaqian City of Ganzhou City,and analyzed the influence degree of four factors of street height,width,length and ground roughness on wind environment.According to the simulation results,the weight order of its influence on wind speed is as follows:street height> width> length> ground roughness,and the street scale is 2-4m in width,3-6m in height,40-80m in length,and ground roughness is 0.5-0.75,the wind speed in the street is the most influential.It is hoped that some measures can be adopted to optimize the ventilation capacity of streets and alleyways to inhibit the spread of the virus in the later stage of the transformation of the traditional historical streets and alleyways.

关 键 词：大气防疫风环境 传统街巷尺度 传统街巷地面粗糙度 街巷改造 

分 类 号：TU119[建筑科学—建筑理论] TU984.113