高海拔公路隧道运营通风海拔高度系数研究

项目名称： 高海拔公路隧道运营通风海拔高度系数研究

项目编号： No.51308472

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 建筑科学

项目作者： 于丽

作者单位： 西南交通大学

项目金额： 25万元

中文摘要： 我国海拔高度3000m以上的公路隧道已超过10座，随着藏区公路的发展，高海拔公路隧道将越来越多。现行的国内、外公路隧道规范对高海拔隧道通风研究甚少，只给出了海拔高度2200m（CO）和2400m（VI）以下的海拔高度系数设计值，这给高海拔公路隧道通风设计带来巨大难题。海拔高度系数（CO、VI）不但与海拔高度有关，还与排放标准、车型关系极大。本课题首先选择四种排放标准单车进行海拔高度系数现场实验，提出每种排放标准单车海拔高度系数随海拔高度变化公式。然后对四种排放标准分别选择不同车型进行现场实验，研究每种排放标准下各类车型的海拔高度系数与单车的关系，提出每种排放标准海拔高度系数随海拔高度变化的车型修正公式。以1995年以来我国四种排放标准汽车保有量数据为样本，建立数学模型，通过分析，确定海拔高度系数对应四种排放标准的权重。综合研究，提出高海拔公路隧道海拔高度系数，为隧道通风设计提供理论依据。

中文关键词： 高海拔；公路隧道；修正系数；通风设计；

英文摘要： With the development of road construction in Tibetan areas, there will be more and more high-altitude road tunnels, although there have been more than 10 road tunnels whose altitudes are over 3000 meters. However, the current situation is that there are not enough elaborate studies on high-altitude tunnel ventilation in current domestic and foreign tunnel specifications and codes and the altitude coefficients which can be used and found are only the design values whose altitudes are individually 2200m for CO and 2400m for VI, which brings about some challenges when high-altitude road tunnels ventilation are done. Not only does the altitude affect altitude coefficients (CO,VI), but also the emission standards and the vehicle types affect the altitude coefficients a lot. In order to demonstrate the relationship between these 3 factors and the altitude coefficient more clearly ,some studies are done in this subject.Firstly, field tests about altitude coefficients are done with four emission standards and the formula about changes with emission standards are put forward.Secondly, each vehicle type is chosen to do field tests.In this part, the relationship between altitude coefficient of each vehicle type and separate car is studied and the altitude coefficient correction formula changes with vehicle type is propo

英文关键词： high altitude；highway tunnel；correction factor；ventilation design；