3D Retaining Wall Calculation via Terrain Intersection

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Solution Overview

Problem

Existing two-dimensional road design technologies struggle to accurately determine the end position and shape change points of retaining walls due to inconsistencies, leading to inaccurate three-dimensional models and increased construction costs, especially when dealing with complex terrain like slopes or embankments.

Innovation Solution

A three-dimensional calculation device and method that automatically calculates the retaining wall by performing intersection calculations between the retaining wall surface and the terrain surface, allowing for precise placement of cut slopes and generation of accurate three-dimensional models, including a placement unit for determining optimal positions and a model generator for generating precise three-dimensional plane models.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If cross sections are created only at specified pitch points and connected to form a three-dimensional model, then the modeling process is simplified and faster, but the accuracy of end position and shape change points cannot be obtained when they do not coincide with given points

Engineering Contradiction:

Improvemodeling speedVSAvoidend position accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The system performs preliminary intersection calculation between the retaining wall surface and terrain surface to determine precise end positions and shape change points before generating the three-dimensional model. This preliminary action ensures accuracy is established upfront rather than requiring denser sampling during model generation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the mechanical approach of increasing cross-section density with a computational geometry approach using intersection calculations. Instead of adding more physical measurement points, the system uses mathematical intersection of surfaces to precisely locate critical points regardless of their position relative to the regular pitch grid.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Device complexity

If two-dimensional road design technology is used to calculate retaining wall end position and height, then the design process is simpler, but inconsistencies arise making the blueprint inappropriate

Engineering Contradiction:

Improvedesign process complexityVSAvoidretaining wall dimension accuracy

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent transitions from two-dimensional cross-sectional analysis to three-dimensional surface intersection calculation. By performing calculations in three dimensions, the system simultaneously determines end positions, shape change points, and heights in a unified framework, eliminating the inconsistencies that arise when these parameters are calculated separately in two dimensions.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The system merges the calculation of end position, shape change points, and height into a single integrated three-dimensional intersection calculation process. This unified approach ensures all parameters are derived from the same geometric foundation, preventing inconsistencies between different blueprint elements.

Inventive Principle:

Principle #5Merging (Combining)

3Productivity

If three-dimensional models are generated by connecting cross sections at specified pitch, then the modeling is faster, but exact quantities of concrete and materials cannot be calculated

Engineering Contradiction:

Improvemodeling efficiencyVSAvoidmaterial quantity accuracy

Core Design Contradiction:

ProductivityVSQuantity of substance

Solution Approach 1:

The system performs preliminary intersection calculation to precisely identify end positions and shape change points before generating the three-dimensional model. This ensures that the model accurately represents the actual geometry of the retaining wall, enabling exact material quantity calculations without requiring excessive modeling detail.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces volumetric estimation methods with precise surface intersection calculation. By calculating the exact intersection between the retaining wall surface and terrain surface in three dimensions, the system determines accurate volumes and surface areas for material quantity estimation, maintaining modeling efficiency while improving quantity accuracy.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20240086581A1Device and program for three-dimensional calculation of retaining wall

Publication Date: 2024.03.14 SANEI KK

AI summary

The present disclosure allows precise calculation of an end position and a shape change point of a retaining wall in three dimensions. A three-dimensional calculation device for a retaining wall includes: an input unit that receives an input of an attribute of the retaining wall; a calculation unit that performs intersection calculation of a retaining wall surface, which is based on the attribute inputted to the input unit, and a terrain surface included in the three-dimensional road model; a placement unit that places a cut slope in a maximum height section of the retaining wall obtained by the intersection calculation by the calculation unit; and a model generator that performs intersection calculation of a cut surface of the cut slope placed by the placement unit and the terrain surface included in the three-dimensional road model to generate a three-dimensional plane model including the cut slope and the retaining wall.