3D Model Rainwater Runoff Calculation for Drainage Design
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Solution Overview
Problem
Existing two-dimensional design methods for roads, house pads, residential land development, rivers, parking lots, and harbor facilities require significant effort to determine height differences based on gradient and cross slope information, often leading to mistakes in gradient direction, especially when both are intricately combined. Additionally, accurate calculation of rainwater runoff is crucial, particularly in regions with high rainfall like Japan, but current methods are prone to errors.
Innovation Solution
An automatic calculation device and program that utilize a three-dimensional model to accurately calculate rainwater runoff by determining the highest and lowest points on the model, automatically dividing the catchment area into multiple areas based on design information, and calculating the area and runoff for each division, thereby enabling quick and accurate grasping of rainwater runoff.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-dimensional design methods are used to determine height differences based on gradient and cross slope information, then the design process can be completed, but the effort required is considerable and mistakes in gradient direction often occur
Solution Approach 1:
The patent transitions from two-dimensional design methods to three-dimensional model-based calculation. By representing the terrain and design surface as 3D models with explicit height information at each point, the system eliminates the need to manually interpret gradient and cross-slope combinations, thereby improving accuracy while reducing the time required for rainwater runoff calculations.
2Measurement precision
If manual calculation methods are used for rainwater runoff, then the calculation can be performed, but errors are prone to occur especially when gradient and cross slope are intricately combined
Solution Approach 1:
The patent replaces manual mechanical calculation methods with automated computer-based computation. The calculation unit automatically processes the three-dimensional model data to determine highest and lowest points and compute rainwater runoff, eliminating human error in interpreting intricate gradient and cross-slope combinations while maintaining computational efficiency.
3Productivity
If three-dimensional model-based automatic calculation is implemented, then accurate rainwater runoff can be calculated in short time, but the system complexity increases
Solution Approach 1:
The patent creates a multi-functional automatic calculation system that can handle various design scenarios (different terrains, design types, and drainage configurations) through a unified three-dimensional model-based approach. The system automatically performs multiple functions including model generation, highest/lowest point identification, catchment area determination, and runoff calculation, thereby achieving high productivity despite the apparent complexity.
Data Source
AI summary
An object is to enable accurate grasp of rainwater runoff in a short time. An automatic calculation device includes: a three-dimensional model obtaining unit configured to obtain a three-dimensional model; a calculation unit configured to calculate a highest point and a lowest point based on the three-dimensional model; an area generation unit configured to generate multiple areas by automatically dividing a rainwater catchment area in the three-dimensional model in a range from the highest point to the lowest point calculated by the calculation unit, based on design information owned by a user; and an output unit configured to calculate an area of each of the areas generated by the area generation unit and output the area obtained by the calculation, and calculate and output rainwater runoff by using the area obtained by the calculation.