Sluice Gate Torsion Structure Lateral Movement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The application of torsion structures in gates is limited to flap gates fixed on foundation grounds via axle type supports, and there are challenges with lateral movement, uneven settlement of rail foundations, and alleviation of bending torsion, which affect the structural stress and cost-effectiveness of large tidal gates.
Innovation Solution
A sluice gate with a torsion structure, equipped with a rail and axle type supports that include rollers with specific circular arc designs, allowing for lateral sliding and accommodating uneven foundation settlement, while minimizing bending torsion stress through optimized cross-sectional shapes and distribution of loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If a torsion structure is used in a large tidal gate, then the steel weight and construction cost are reduced, but the application is limited to flap gates fixed on foundation grounds and cannot achieve lateral movement
Solution Approach 1:
The invention transforms the static fixed flap gate into a dynamic laterally sliding gate. The gate leaf can move horizontally along rails while maintaining its torsion structure, enabling lateral movement capability that was previously incompatible with torsion structures. This dynamic transformation resolves the contradiction by allowing the gate to achieve both weight reduction and lateral movement functionality.
Solution Approach 2:
The gate system is segmented into multiple components: the gate leaf with torsion structure, the rails fixed to the foundation, and the axle type supports that enable lateral movement. This segmentation allows the gate leaf to maintain its lightweight torsion structure while the support system provides the necessary lateral movement capability through rollers moving along the rails.
2Ease of operation
If axle type supports are used to enable lateral movement, then the gate can slide horizontally, but uneven settlement of rail foundations causes operational problems
Solution Approach 1:
The invention incorporates axles and rollers that can accommodate vertical displacements and tilts caused by uneven foundation settlement. The axle type support design includes features that absorb these irregularities beforehand, preventing them from disrupting gate operation. The rollers can adjust to varying rail heights while maintaining smooth lateral movement, thus cushioning against the harmful effects of uneven settlement.
3Strength
If a thin wall closed cross-section is used in the torsion structure, then the structural efficiency is improved, but bending torsion stress increases under load
Solution Approach 1:
The invention optimizes the thin-walled closed cross-sectional parameters to minimize bending torsion stress. By carefully selecting wall thickness, cross-sectional shape, and stiffener placement, the structure achieves high structural efficiency while controlling stress levels. The parameter optimization allows the thin-walled section to resist both torsion and bending loads effectively, resolving the contradiction between structural efficiency and stress control.
Data Source
AI summary
A laterally sliding type opening/closing gate of a torsion structure of reasonable cost is implemented. The gate includes: the torsion structure having a closed cross-section consisting of a thin wall installed such that it may cross a sluice and be composed such that its cross-section may make an in-plane rotation around a restriction point on the cross-section and that a torsion moment generated by an applied load and reaction force on the restriction point is transmitted to its terminal due to its torsion rigidity; and a rail that is installed such that it may cross the sluice; and a plurality of axle type supports that has a function of a restriction point and moves along the rail.