论文部分内容阅读
为避免运输化学危险品车辆在公路桥梁发生事故而导致液态危险品直接泄漏至水体造成环境风险,为跨越敏感水域的桥梁设置应急排水系统已成为交通环境保护的重要任务。纵向排水管道是应急排水系统的重要组成部分。为寻求简单科学的公路桥梁纵向排水系统设计方法,根据明渠均匀流水力计算公式,结合公路桥梁特点,推导出公路桥梁纵向排水管道管径的设计计算式,以全国几个典型区域代表性城市为例,用MATLAB编程获得排水路段长度、桥梁纵坡、泄水孔间距与管道管径的关系曲线图,设计时可根据桥梁实际情况查图确定管径,对工程设计具有参考价值。
In order to avoid the accidental leakage of liquid dangerous goods to water bodies caused by the accident of vehicles transporting chemical dangerous goods on highway bridges and bridges, it is an important task for traffic environment protection to set up emergency drainage system for bridges across sensitive waters. Longitudinal drainage pipe is an important part of emergency drainage system. In order to find a simple and scientific design method of longitudinal drainage system for highway bridges and bridges, according to the formula of uniform hydraulic flow in open channel and the characteristics of highway bridges and bridges, the design formula for the pipe diameter of longitudinal drainage pipes of highway bridges is deduced. Taking typical cities in several typical areas as For example, using MATLAB to get the curve diagram of drainage section length, bridge longitudinal slope, drainage hole spacing and pipe diameter, the design can be based on the actual situation of the bridge to determine the pipe diameter, which is of reference value to engineering design.