A box culvert equipped with a special rubber ring at the joint section to enhance seismic performance.
■There are two types, K-type and T-type, depending on the required performance. 【K-type】 It has water-tightness that can withstand a water pressure of 0.06 MPa under level 2 seismic motion in non-liquefiable, non-inclined ground conditions. 【T-type】 It has water-tightness that can withstand a water pressure of 0.06 MPa under level 2 seismic motion. ■By absorbing ground displacement at each joint of the product, it is possible to reduce the stress generated in the structure and minimize the amount of pull-out and bending angle occurring at each joint. ■The special rubber ring has a two-layer structure, with soft rubber covered by hard rubber on the outside, providing excellent followability, compression recovery, and wear resistance. ■High water-tightness can be achieved with the special rubber ring alone, eliminating the need for internal joint work.
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basic information
【Design Conditions】 Soil Cover: 0.2m to 3.0m Dead Load Unit Weight of Reinforced Concrete: 24.5 kN/m³ Unit Weight of Soil: 18.0 kN/m³ Unit Weight of Asphalt: 22.5 kN/m³ Live Load (Road Crossing): T-25t Horizontal Earth Pressure Coefficient: 0.50 Groundwater Level: The maximum groundwater level is set at 50cm below the road surface. Applicable Ground: Generally, it should be good ground of at least ordinary ground quality. *For specific design details, refer to the Precast Box Culvert Design and Construction Manual by the National Box Culvert Association. *Separate considerations can be made outside of the above design conditions.
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catalog（1）
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CAD data（20）
| Model number | overview | File |
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| dcj-box_0600-0900.dxf |
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| dcj-box_1000-1100.dxf |
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| dcj-box_1200-1400.dxf |
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| dcj-box_1500-1800.dxf |
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| dcj-box_2000-2200.dxf |
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| dcj-box_2300-2400.dxf |
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| dcj-box_2500.dxf |
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| dcj-box_2800.dxf |
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| dcj-box_3000-3500.dxf |
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| dcj-box_standard cross-section.dxf |
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| dcj-box_0600-0900.sfc |
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| dcj-box_1000-1100.sfc |
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| dcj-box_1200-1400.sfc |
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| dcj-box_1500-1800.sfc |
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| dcj-box_2000-2200.sfc |
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| dcj-box_2300-2400.sfc |
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| dcj-box_2500.sfc |
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| dcj-box_2800.sfc |
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| dcj-box_3000-3500.sfc |
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| dcj-box_standard cross-section.sfc |
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Company information
Our company, under the belief of contributing to society through the development of social infrastructure, constantly strives for quality improvement and technical advancement. With the conviction that business is about people, we respect humanity and foster a free and open corporate culture through talent development and fair personnel practices. We aim to deepen mutual understanding and trust, working together towards the development of the company and the enhancement of welfare, while concentrating all our efforts on stabilizing and expanding our management foundation.