This paper discusses the method of calculating the flow rate of trapezoidal curbstone opening in sponge city design.In view of the lack of calculation basis of the current domestic design standards,a method of flow calculation based on hydraulic weir flow is proposed.Firstly,the calculation of the flow rate of the rectangular curbstone opening at the bottom of the vertical slope is analyzed.Secondly,the method of solving the flow rate of the triangular section of trapezoidal curbstone opening at the bottom of the longitudinal slope by integral e-quation is proposed,and it is proved that the flow rate is equal to that of the rectangular section opening with equivalent width.Finally,the concept of equivalent width is applied to the calculation of the trapezoidal curbstone opening along the continuous longitudinal slope section.This paper provides a practical method for calculating the flow of curbstone opening along the road in sponge city design.
关键词
矩形路缘石开口/梯形路缘石开口/等效宽度/流量计算/海绵城市设计
Key words
rectangular curbstone opening/trapezoidal curbstone opening/equivalent width/flow calculation/sponge city design
维普
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