Construction Tilting Structure Using Fluid Drag for Direction Control

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Solution Overview

Problem

Demolishing methods for constructions, especially aquatic constructions, result in hazardous wave formation, contamination, and sinking issues, and lack control over tilting speed and direction.

Innovation Solution

A method and structure that involves mounting resistive, floating, or towing members to constructions to control tilting speed and direction by utilizing fluid or floating forces, and employing cutting techniques to facilitate controlled tilting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a construction is demolished by cutting and collapsing on land, then demolition cost is reduced and high-place work is avoided, but hazardous waves are generated on water surface and contaminants are scattered

Engineering Contradiction:
Improvedemolition costVSAvoidhazardous waves and contamination
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by attaching resistive members (such as foam blocks or air bags) to the construction before demolition. These members are pre-positioned to provide resistance during the tilting process, controlling the construction's movement and preventing uncontrolled collapse that would generate hazardous waves and scatter contaminants.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The resistive members act as intermediaries between the construction and the water. Instead of the construction directly interacting with water during collapse (causing waves and contamination), the resistive members mediate this interaction by providing controlled resistance, thereby reducing harmful effects while maintaining the low-cost demolition approach.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If a construction is tilted without resistive members, then tilting process is simple, but tilting speed and direction cannot be controlled

Engineering Contradiction:
Improvetilting system complexityVSAvoidtilting control
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

The patent applies parameter changes by using resistive members with variable resistance characteristics. The resistive members can be designed to provide different levels of resistance at different stages of tilting, enabling control over tilting speed and direction. This allows relatively simple control of complex tilting parameters without requiring sophisticated control systems.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables safe and controlled tilting of constructions by reducing impact and preventing sinking, while minimizing environmental contamination.

Implementation Method 1

a resistive member mounted to the construction and subjected to fluid force from water surrounding the construction

Methodology Applied
Scientific EffectFluid force: Drag

Implementation Method 2

a floating member mounted to the construction and subjected to floating force from water

Methodology Applied
Scientific EffectFloating force: Archimedes' Principle (Buoyancy)

Data Source

PatentEP4219837B1Method for tilting construction and tilting structure
Publication Date: 2025.12.10 MITSUBISHI HEAVY IND LTD
  • EP4219837B1 patent drawingFigure 1
  • EP4219837B1 patent drawingFigure 2
  • EP4219837B1 patent drawingFigure 3

AI summary

Provided are a method for tilting a construction and a tilting structure that can control at least one of the tilting speed and the tilting direction of the construction. The method for tilting a construction to tilt a bottom-mounted construction 200 extending upward from a ground 401 includes: an installation step of mounting, to the construction 200, a resistive member 110 subjected to fluid force from water or air surrounding the construction 200; and a tilting step of tilting the construction 200 to which the resistive member 110 is mounted.