较长单坡彩钢板屋面雨荷载研究

Study on Rain Load of Long Single Sloping Plate Roof

目前,在工业建筑中屋面普遍采用轻钢结构,屋面坡度一般为5%,而单坡长度越来越长,现已达到90 m。短时暴雨情况下积水会给屋面增大多少荷载,带来多大影响,是值得重视和研究的新课题。要解决此问题,首先须知道暴雨强度公式,由各等流时线断面处设计流量q_i的计算求出雨水深度,获得特定条件下的雨压。

At present,light steel structure is generally adopted in the roofs of industrial buildings.The slope of the roof is generally 5%,but the length of single slope is longer and longer,now it has reached 90 m. Under short-term rainstorm,how much load the water will bring to the roof and how much impact it brings will be a new topic worthy of attention and research. To solve this problem,we must first know the formula of rainstorm intensity,and calculate the depth of rainwater based on the design flow volume of each equal time line section,and obtain the rain pressure under certain conditions.