7. INTERNAL FORCES IN STRUCTURES
The analysis of arches focuses on their structural efficiency and the transition from bending to axial compression under loads. Key differences from prior concepts include the utilization of polar coordinates for equations. Arches, particularly parabolic and semi-circular forms, serve as economical solutions for spanning large distances, capitalizing on materials optimized for compression while minimizing bending moments.
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What we have learnt
- Arches transmit loads primarily through axial compression.
- Designing arches involves understanding their shape to optimize load distribution.
- Three-hinged arches can accommodate support settlements and thermal expansion.
Key Concepts
- -- Axial Compression
- A force that acts along the length of an arch, compressing its elements.
- -- Parabolic Arch
- An arch whose profile forms a parabolic shape, providing optimal load distribution.
- -- ThreeHinged Arch
- A type of arch that has three hinge points allowing for stable support under various loads.
- -- Section Depth
- The vertical height of an arch's cross-sectional shape which impacts its load-bearing capacity.
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