Corrugated Steel Structure (CSS), which was applied in North America in the early 1900s and has been installed in more than 1,000,000 places worldwide, has been in service since 1996, 100 years later, in Korea with POSCO, Korea Expressway Corporation, Seoul National University, Hanyang University, etc. It has been applied to the domestic market through commercialization research by specialized companies. Based on this, since the 2000s, it has been widely applied to road crossing passages, waterways and local small rivers, animal movement ecological passages, and Piam tunnels. Based on the advantages and economic feasibility of minimizing the existing vehicle traffic control during construction, it is a universal new construction method along with the existing reinforced concrete construction method. About 5000 corrugated steel plate structures have been installed and operated in Korea for 20 years.
However, regarding the various advantages of the construction method and the rapidly occurring demand, in the beginning, detailed explanations of the national design standards and specifications were insufficient. Problems such as deformation of the corrugated steel sheet occurred intermittently due to the lack of understanding of the backfill material and backfill compaction, which are the most important factors in
To improve this, ChungAmEnC has continuously improved and supplemented related standards through R&D with various related organizations, and based on domestic and foreign failure cases, provides optimized design solutions in advance for possible problems during actual construction. Optimized solutions include Virtual Construction: a three-dimensional system for step-by-step forecasting processes. (BIM LoD: 350 / Tekla, Trimble) and 3D Scanning (Leica P30 System, Cyclone ) Minimize errors that may occur at each construction stage I did. In addition, by providing 3D FEM, 3D printing and landscape design solutions, we will do our best to become a company that continuously develops and provides the world's best solutions that overcome the uncertainty of design and construction anxiety that customers have felt.
History of CSS
In 1896, an American civil engineer James. H. Watson and Starting with Stanley Simpson's patent, it was applied to small drainage channels in North America until the 1930s, and by the late 1900s, the maximum span was applied up to 11m and expanded to small bridges, passageways, and military facilities (ammunition depots). Since the 2000s, the span has been extended to 23m and applied to ecological tunnels, mine stockpiles, reclaim tunnels, and military facilities (hangars). 2014-2016 R&D and commercialization of extra-corrugated corrugated steel sheet (EXSCor) of Cheongam EnC With success, the maximum span was extended to 40m. It satisfies the maximum loads of CAT 797F (about 620 tons), EURO LM71, mine trucks, which could not be applied in the past with respect to live loading along with the expansion of span, so that it is economical, stable, and workable than concrete structures in multi-step processes. has enough competitiveness. In addition, extra corrugated steel sheet (EXSCor) is listed as a construction method and product according to design standards in Korea (KDS, KCS) as well as AASHTO LRFD and ASTM A796M in the United States.
Landscape design open tunnel
1. Basic direction of advanced tunnel
Elevation: Emphasizes a future-oriented image by emphasizing the shape of the upper part and emphasizing a high-tech image by using a simple finishing material made of metal
Periphery: Make the design of the foundation and the linearity and behavior of the entrance and exit a sense of unity, and create a buffer green zone in connection with the slope around the entrance
Inside the tunnel: A simple pattern emphasizing the directionality of the high-tech image is applied and a buried lighting facility is introduced at the base to stimulate visual interest.
Canopy: Apply a canopy with a futuristic symbolism, and apply a simple color sense in consideration of the surrounding landscape
Lighting: Emphasize the color of the structure itself through Up Lighting of the entry canopy
2. Basic direction of cultural tunnel
Elevation part: The cultural motif is shaped as a concept, and the symbolic image is produced three-dimensionally rather than directly through painting.
Peripheral part: Give a sense of unity by linking the design of the foundation with the entrance surface, apply partial greenery, and create a buffer green zone in connection with the slope around the entrance
Inside the tunnel: Applying symbolic patterns and images reflecting regional characteristics, considering the height of the gaze when walking for an opportunity to experience pedestrian culture. Reflecting cultural factors
Canopy: Unless the canopy is suitable for displaying cultural symbols, it is not applied where possible.
Lighting: Exterior lighting Up Lighting emphasizes the arch shape and pattern of the tunnel.
3. Basic direction of tourist tunnel
Elevation: Introduce the symbolic color and pattern elements of the tourist destination on the upper part, Installation of sculptures of simplified symbolic elements of local tourism resources.
Periphery: Considering the three-dimensional character design so that the foundation boundary is connected to the inner foundation of the tunnel, a gorgeous entry landscape is formed through planting of shrubs.
Inside the tunnel: A lively landscape is provided through uncomplicated super graphic production.
Canopy: When a canopy is installed, the periphery is made simple and emphasized, and a three-dimensional character is given to the top of the canopy as a gateway image.
Lighting: The image of the tourist destination is emphasized at the entrance and exit with colorful lighting, and the lighting changes over time.
4. Basic direction of ecological tunnel
Elevation: Emphasizes eco-friendliness by using a linear concrete structure that covers the entrance and exit to create a planting space and apply reinforced soil that can be planted.
Peripheral: Connects linearly from the entrance to the green area of the foundation, In harmony with the surrounding landscape by composing the entire green area around the entrance and exit.
Tunnel interior: pattern with natural materials as a motif, and finishing of the foundation using environmentally friendly materials and materials.
Canopy: No artificial structure installation is applied to emphasize the image of the surrounding ecological landscape.
Lighting: Efficient use of eco-friendly low-light lighting makes the ecological image stand out even at night by lighting the green road.