YOUR STEEL STRUCTURE ENGINEERING EXPERT
We are a steel structure fabricator and EPC contractor based in Jining, Shandong, China, with 17 years of experience since 2009 and delivered projects in 60+ countries. Shandong Shijie Heavy Industry Co., Ltd. and its sister company, Henan Hengfeng Steel Structure Engineering Co., Ltd., operate as one manufacturing group under the same ultimate ownership. SynJect is the group’s export brand.
Urban Large-Span Traffic Bridge
In the process of modern urban transportation infrastructure development and renovation, large-span urban bridges are widely used in key projects such as urban expressways, elevated ring roads, river-crossing corridors, and interchange hubs due to their unique technical advantages and engineering value. Compared to traditional small- and medium-span bridges, their most distinctive feature is the ability to span long distances with fewer or even no intermediate piers. This minimizes the impact on traffic below, river navigation, rail transit, and urban public spaces, ensuring that various transportation systems operate independently without interfering with one another.
Urban Elevated Large-Span Continuous Girder Bridge
Core Features & Advantages
Urban elevated long-span continuous beam bridges offer significant comprehensive advantages in modern urban transportation infrastructure due to their mature structural systems and excellent engineering adaptability. The structure experiences uniform stress distribution, minimal deflection, and a smooth alignment, providing a stable and comfortable driving experience. It is particularly well-suited for elevated expressways and major urban thoroughfares. Its long-span design effectively reduces the number of piers required, conserves urban land, and minimizes the impact on ground-level traffic, existing buildings, and underground utilities, resulting in less disruption to the surrounding environment during both construction and operation.
♦ Excellent structural load-bearing performance
♦ Large-span layout saves space
♦ Good seismic resistance and durability performance
♦ Proven construction methods and manageable project timelines
♦ Lower long-term operating costs
Applications
Urban elevated long-span continuous-beam bridges are an ideal choice for urban infrastructure development and are widely used at key transportation nodes, such as busy intersections and highway interchanges. This bridge design enables long spans and reduces the number of piers, resulting in smoother traffic flow and reduced congestion. Particularly within the transportation networks of major cities, elevated bridges can effectively enhance transport capacity and road throughput while alleviating traffic bottlenecks. The space beneath these bridges can be flexibly utilized for commercial, parking, or green areas, effectively improving land use efficiency and fostering a win-win situation for both the urban economy and the environment.
♦ New Town Development and Inter-neighborhood Corridors
♦ Railway and tramway crossing points
♦ Interchanges in densely built-up areas and transportation hubs
♦ Urban expressways and elevated main roads
Vision & Mission
We are committed to providing safe, efficient, and environmentally friendly solutions for global customers through continuous technological innovation and exceptional product quality, driving industry progress and collectively creating a better future.
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SHANDONG SHIJIE HEAVY INDUSTRY CO., LTD
Headquartered in the High-Tech Development Zone of Jining, Shandong Province, Shandong Shijie Heavy Industry Co., Ltd. and its sister company, Henan Hengfeng Steel Structure Engineering Co., Ltd., operate as a unified manufacturing group under the same ultimate ownership. Globally, we deliver our end-to-end solutions through our dedicated export brand, SynJect.
Drawing on 17 years of export expertise and a proven track record across more than 60 countries, we provide integrated EPC contracting and heavy fabrication. This global reach is backed by our robust manufacturing footprint: an 80,000 m² facility with an annual capacity exceeding 500,000 tons, RMB 120 million in registered capital, and a skilled workforce of over 600 professionals.
Our core expertise spans civil construction, petrochemical facilities, long-distance pressure pipelines, heavy steel structures, pressure vessels, and skid-mounted refueling stations.
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