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Construction

Construction: A Focus on Quality

Throughout our history, Shimizu has prized the skills and spirit of the craftsperson. Over many years, we have responded to customer needs through the use and development of superior technologies. Mindful of our responsibilities as a general contractor, we strive to secure high quality, safety, comfort, reduced costs, and environmental friendliness throughout the project life cycle, from the planning stages through design, construction, and facility maintenance and operations. In addition to fulfilling customer goals, our proposals reflect the imperative to increase the value of each building, based on our vast storehouse of skills and expertise. We carefully assess each task, gather all relevant information, and apply this information to subsequent tasks. Using the skills and knowledge accumulated in this way over more than 200 years of operations, we are able to maximize the value of customer building assets.

Case Study: Completion of Large-Scale Changi Airport Terminal 3 Project

Construction of the Terminal 3 building at Singapore's Changi Airport finished in spring 2007. With a floor area of 550,000 m2, a total length of 1,350 m, and an annual passenger-handling capacity of 20 million, the new structure represents one of the world's largest airport terminals. At the outset of work at the end of 2002, this project involved extremely close joint efforts between Shimizu's on-site team and engineers based at our Tokyo headquarters. The extraordinary amounts of glass used and the complex design of the massive roof structure—in particular the huge open spaces beneath the roof—necessitated full deployment of Shimizu's advanced technologies, from design to final installation. During the methodical construction process, analysis of the roof's steel frame and the stresses placed on the trusses involved use of Shimizu's 3D CAD-based Structural Analysis and Simulation system and other computer analysis. This project also drew on various other techniques to reduce thermal loads created by exposure to tropical sunlight and minimize loads on air-conditioning systems. The end result of considerable work and planning, one of Asia's premier airport terminals has been operating since 2008.

View of the main structure, under illumination, whose design was optimized for 24-hour airport service.

The main building departure hall (2F) makes the most of abundant natural lighting.

Civil Engineering: Applying the Latest Technologies to Create Safe, Secure, and Comfortable Ways of Life

Our safe, secure, and comfortable ways of life depend on various elements of the social infrastructure, including lifelines like water, electricity, and gas services essential for home life; the transportation infrastructure, including roads and railways, used to commute to work or school and to transport goods and materials; and safety facilities like dams and levees that minimize damage from natural phenomena including earthquakes and typhoons. To perfect these infrastructure facilities, Shimizu has responded to rapidly changing social needs through the constant development of new technologies across various processes involved in the civil engineering business. Our goal is to propose, build, maintain, and improve the functions of these elements of the infrastructure while achieving harmony with the environment, but without ever losing sight of our social mission and responsibilities. Today, we focus on building new infrastructure elements to pave the way for the future. Shimizu will continue to create infrastructure elements that will support future generations by using our expertise and advanced technological capabilities.

Case Study: World's Longest Single-Plane Cable-Stayed Bridge to Span the Ha Long Bay World Heritage Site

To the east of Hanoi lies Ha Long Bay, a famous World Heritage site close to Vietnam's border with China. Shimizu has completed construction of the Bai Chay Bridge, a long span over the bay that will support greater trade between the growing economies of Vietnam and China. The prestressed concrete (PC) bridge's total length is 903 m, while the main span of this single-plane cable-stayed structure is 435 m—a new world record for a single span of a bridge of this type. The bridge is designed in this way because support pillars could not be placed in the straits of the channel. This design also creates a pleasing aesthetic against the surrounding scenery. Additionally, the bay is one of several areas of Vietnam that suffers from typhoons. To protect the bridge, Shimizu installed the world's first distributed liquid dampers in the pairs of main bridge columns. Developed using proprietary technologies, these devices use enclosed water to absorb vibrations and are the first of their kind to be installed on any PC cable-stayed bridge. Shimizu has also installed other technologies in various other parts of the bridge to reduce the vibration and stresses generated by high winds. Completion of the Bai Chay Bridge will allow vehicles carrying goods to cross the bay without leaving the road. This journey previously required a ferry trip. The new transport link is expected to boost trade between Vietnam and China, contributing significantly to the development of the Vietnamese economy.

Optical fiber sensors installed in the main columns of the Bai Chay Bridge ensure full safety monitoring after completion.

The stability of this design in high winds was tested in Shimizu's wind tunnel using a 1/150-scale model of the bridge.

Mid-construction: Careful use of high-strength steel pipes and concrete helped minimize the weight of the main girders to create the world's longest span for this type of bridge.


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