Machinery on Trolley Crane Design Port of Singapore

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1 Machinery on Trolley Crane Design Port of Singapore Liftech worked closely with MHI engineers to optimize the crane weight and structural performance of both the main crane structure and the trolley. The resulting structural design meets all of PSA s stringent deflection requirements. The boom features a trapezoidal monogirder design with a single forestay. In addition, an assist link scheme (patent pending), developed by MHI and Liftech, controls the deflection of the boom. Liftech assisted with the design of the trolley and review of mechanical concepts. Mitsubishi Heavy Industries, Ltd. Hiroshima, Japan Key Project: C02

2 Post Panamax Articulated Boom Cranes Kaohsiung, Taiwan Hanjin Heavy Industries provided three cranes for Hanjin Shipping s new terminal in Kaohsiung. The cranes have an outreach of 52 m (170-6 ) and a rated load of 40.6 t (40 LT). Due to the nearby airport, the height at the terminal is restricted to m ( ). Hanjin Heavy Industries Co. Pusan, Korea Liftech provided the structural design of the frame and articulated boom and the mechanical design for the articulation. Key Project: C03

3 Low Profile Crane Design Massachusetts Port Authority, Boston, Massachusetts Liftech provided the conceptual and final structural design and detail drawings for two post-panamax low profile container cranes. The inclined landside leg significantly reduced the overall weight, reduced the wheel loads, and allowed for a lightweight boom. Paceco Corporation Hayward, California, USA Key Project: C12

4 Low Profile Crane Design Port Everglades, Florida Four post-panamax cranes were designed to meet specific requirements of Port Everglades, including strict aircraft clearance requirements and efficient structures to withstand hurricane winds. The inclined landside leg significantly reduced the weight. An improved adjustable boom hanger system increased reliability and enhanced boom travel performance. Three additional post-panamax cranes were designed in 1998 to travel around a 90 curve. The trucks were articulated for this purpose. Samsung Heavy Industries Co., Ltd. Kyungnam, Korea Liftech designed the cranes, checked shop drawings, prepared operating and maintenance manuals, and reviewed the fabrication, assembly, ocean shipping, and testing. Key Project: C15

5 Elevating Girder Crane Design Virginia Port Authority, Norfolk, Virginia Liftech worked with VIT and ZPMC engineers to develop the elevating girder crane design. The upper works (including the trolley girder, boom, trolley girder support beams, A-frame, apex beam, and stays) may be hoisted to any of five preset elevations to reduce hoisting time to suit ship sizes. Liftech provided full procurement services for the project. Virginia Port Authority Norfolk, Virginia, USA This is the first elevating girder crane built worldwide. Liftech won a SEAONC 2004 Excellence in Structural Engineering Award for Special Use Structures. Key Project: C24

6 Low Profile Crane Conceptual Design Port of Los Angeles, California In response to the community s desire to preserve the marine view, Port of Los Angeles offered to consider low profile cranes for Berths Liftech studies indicated that the conventional low profile cranes did not comply with the port s seismic design standards for the wharves. Using the concept of base isolation and innovative features such as a moving machinery house and sliding gantry, Liftech developed a compliant design. Liftech, in cooperation with the port s wharf consultants, verified the performance of the crane and wharf with non-linear pushover analysis and time history analyses using SAP2000 and Ruaumoko. Port of Los Angeles Los Angeles, California, USA Key Project: C30

7 WBCT Crane Structural Design Review San Pedro, California West Basin Container Terminal purchased four dockside container cranes from ZPMC for Berths at Port of Los Angeles. Liftech provided the technical specifications, structural design and review assistance, and fabrication support for the new cranes. Client: West Basin Container Terminal LLC San Pedro, California, USA The design constraints for the new cranes presented a unique challenge. The new crane geometry is similar to that of the existing cranes, but the structure is designed to comply with new seismic criteria, which are more demanding for the crane structure. The cranes were required to comply with the Port of Los Angeles wharf seismic design criteria. The weight and natural period of the new cranes were required to match those of the existing cranes. To help meet this requirement, the cranes were designed with a ductile frame system, which limits the load and displacement demand on the crane and wharf during an earthquake. Key Project: C46

8 RMG Design Review Felixstowe Dock and Railway Company Felixstowe Dock and Railway Company purchased one rail mounted gantry (RMG) crane from ZPMC. Liftech reviewed the structural design, structural fabrication, and seafastening design and installation. Felixstowe Dock and Railway Company Suffolk, England, UK The photograph above shows the crane being prepared for shipping. Key Project: C53

9 FastNet APM Terminals Liftech participated with APM Terminals to conceptualize and design FastNet, a crane technology that enables STS gantry cranes to work adjacent, instead of alternate, bays of a large container ship. APMT estimates that FastNet can deliver berth productivity of 450 moves an hour. APM Terminals Liftech designed the structures and collaborated with TransHoist Engineering Inc. to conceptualize and develop some new mechanical components. Structural designs included the cranes, waterside and landside elevated girders, fixed landside girder supports, and moveable waterside girder supports. Mechanical design included a new system for equalizing loads on the tower frame traveling wheels using wire ropes. Key Project: C57

10 Low Profile Crane Procurement Sydney International Container Terminals Pty Ltd Liftech assisted Sydney International Container Terminals Pty Ltd with structural design and review of four post-panamax ZPMC low profile shuttle boom cranes for their new container terminal across from an airport in Sydney, Australia. Liftech participated in the conceptualization and design of the shuttle boom structure, the boom hangers, and the crane structure. Liftech s work included assisting with design, design review, fabrication observation, and seafastening review. The key design issues were related to the truss boom and the boom hangers, which are unique to shuttle boom cranes. The key parameters are: Rail span Overall height Outreach Container lift height Hutchison Port Holdings Hong Kong 35 m 52 m 50 m 34 m above rail Key Project: C58

11 Crane on barge elevated runway Headblock parallel to runway Headblock rotated for maintenance. The other crane in the foreground is a typical container crane. MES Barge Crane for Matson with Rotating Boom and Headblock Liftech helped design this Mitsui Engineering and Shipbuilding Co., Ltd. barge crane with a rotating boom and headblock for Matson. The headblock hangs from a rotating hoist platform. During normal operations, when the boom rotates, the headblock rotates relative to the boom so that the headblock does not rotate relative to the vessel. Over the years, we designed modifications to the crane structure for increased lift height and provided a structural maintenance program. Matson Navigation Company Oakland, California, USA The crane is on a runway on a barge and resists significant voyage forces. Liftech also reviewed the runway design. Key Project: C60

12 Log Boom Cranes Various Locations Liftech provided structural analysis and design for various rotating log boom cranes. The latest was for a 170-foot, 45-ton crane in Valliant, Oklahoma. Liftech also designed and prepared drawings for cranes with radii of 125 feet and 155 feet and capacities ranging from 25 tons to 60 tons. The grapples are either at a fixed radius or mounted on a moving trolley. Price Systems, Inc. Malvern, Arkansas, USA Key Project: S06

13 4,000 t Floating Crane Design Review Guangdong Salvage Bureau, China Liftech provided structural design assistance and review services to ZPMC and assisted them in developing the overall concept and layout arrangement. Liftech also provided preliminary design of the boom tip and typical details of the boom structure, checked member sizes, reviewed design drawings of typical details, and provided suggestions for improvement. ZPMC Shanghai, China The crane has a 4,000-t capacity at 40-m radius on the main hook. It has two auxiliary hooks with capacities of 800 t and 150 t. The top of the boom measures 21 m above the water line at the 40-m radius. ZPMC built the floating crane, which will be used for heavy lift work. Key Project: S07

14 1,700 t Floating Crane Design Review Left Coast Lifter American Bridge/Fluor Enterprises Liftech provided design assistance and review services to American Bridge/Fluor Enterprises (ABF) for procurement of a shear leg derrick. The derrick is used to erect the major components of the San Francisco-Oakland Bay Bridge selfanchored suspension span. The crane with a 100-m boom has 1,700 t capacity at 60 degrees. The crane has two auxiliary hooks with capacities of 100 t and 10 t. The boom is configured to lay down for transport within the USA river system. The 100 ft wide x 400 ft long barge has removable floats for increased stability. The derrick and barge floats are made by ZPMC in China. The barge was fabricated by US Barge LLC in the United States and towed to ZPMC for mounting the crane. Liftech s services included development of the technical specifications, design review and assistance, and fabrication review assistance. This project has received three awards. In 2010, it was awarded the Structural Engineers Association of Northern California Excellence in Structural Engineering Award in the Study/Research Guidelines category. Also in 2010, it was awarded the Structural Engineers Association of California Excellence in Structural Engineering Award in the Special- Use Structures category. In 2011, it was awarded the National Council of Structural Engineers Associations (NCSEA) Excellence in Structural Engineering Award, Outstanding Project, in the Other Structures category. The Outstanding Project Award is the highest honor in the NCSEA Excellence in Structural Engineering Awards program. American Bridge Company Coraopolis, Pennsylvania, USA Key Project: S08

15 AmClyde Floating Cranes AmClyde supplied two semi-submersible vessels with twin revolving derricks of 6,000 t and 7,000 t capacity each. AmHoist St. Paul, Minnesota, USA Liftech was part of the AmHoist design team and assisted in designing the crane booms. Key Project: S11

16 8,000 t Floating Crane Design Review ZPMC supplied an 8,000 t double boom shear leg floating crane to Samsung Heavy Industries Company Limited. The crane has 8 main hooks, each with a 1,000 t capacity. The crane is rated for 8,000 t at 82 m from boom heel. Client: ZPMC Shanghai, China Liftech assisted ZPMC with developing the overall concept and layout, and designing various crane structural components. Key Project: S17

17 83 m Bigge Heavy Lift Cranes Bigge Power Constructors has built large capacity derrick cranes intended for large scale modular construction of nuclear power plants. Each crane rolls on a circular track. This particular application required a capacity of 4,000 short tons at a radius of 240 feet from the center of rotation, 836 short tons at 640 feet, and 500 short tons at 790 feet. This layout allows the crane to reach multiple locations within a plant, eliminating the need to relocate the crane during the project s construction. Liftech assisted Bigge s engineering team with the design of the boom, mast, and carriage assemblies of the new cranes, and structural analysis of part of the crane assembly. Liftech also provided peer review and engineering support for some other aspects of the project. Bigge Power Constructors San Leandro, California, USA Key Project: S21