Railway Crossing Retaining Structure Overview
This general drawing details a U-shaped reinforced concrete retaining wall structure designed for the Sagami Railway Line crossing at the Seya urban planning road. The structure features:
Location Specifications:
– Positioned at approximately 14k559m from Yokohama starting point on the Sagami Railway Main Line between Mitsukyo and Seya stations
– Railway angle crossing of 84°39’50” (downward line, left)
Structural Details:
– U-type reinforced concrete structure with 100-year design life
– Total internal width: 14m (3.5m pedestrian walkway + 7.0m roadway + 3.5m pedestrian walkway)
– Structure length: 8.0m
– Design concrete strength: 24 N/mm²
– Reinforcement: SD345 grade steel (yield strength 345 N/mm², tensile strength 490 N/mm²)
– Maximum water-cement ratio: 55%
– Concrete cover: 40mm (side walls), 50mm (center walls), 45mm (upper bed surface), 40mm (lower bed surface)
The drawing includes plan views, elevation views, and standard cross-sections showing the relationship between the railway line and the road passing beneath it. Key elevation points (marked as R.L.) range from approximately 52.100m to 61.993m, with detailed gradients marked throughout (ranging from 0.3% to 9.541%).
Design follows the Railway Structure Design Standards with applied train load NLLD-17 and ballast track specifications, considering general environmental conditions for durability requirements.
