VA Crane Design Projects

7/23/2019 VA Crane Design Projects

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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 self-anchored

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 congured

to lay down for transport within the USA river system.

The 100 ft wide x 400 ft long barge has removable

oats for increased stability. The derrick and barge

oats 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 specications, 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 honorin the NCSEA Excellence in Structural Engineering

Awards program.

Reference:

American Bridge Company

Coraopolis, Pennsylvania

1,700 t Floating Crane Design Review

“Left Coast Lifter”

American Bridge/Fluor Enterprises

A California Corporation 344 - 20th Street, Suite 360, Oakland, CA 94612-3593 1-510-832-5606 Fax: 1-510-832-2436 www.liftech.net

Key Project: S08



Liftech provided structural design assistanceand 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.

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 oating crane, which will be used for heavy liftwork.

Reference:ZPMC

Shanghai, China


Guangdong Salvage Bureau, China


Key Project: S07




Liftech worked closely with MHI engineers tooptimize 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

deection 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 deection of the boom.

Liftech assisted with the design of the trolley andreview of mechanical concepts.

Reference:

Mitsubishi Heavy Industries, Ltd.

Hiroshima, Japan

Machinery-on-Trolley Crane Design

Port of Singapore

Key Project: C02




Liftech provided structural analysis and design forvarious rotating log boom cranes. The latest was for a

170 feet, 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

xed radius or mounted on a moving trolley.

Reference:Price Systems, Inc.

Malvern, Arkansas

Log Boom Cranes

Various Locations

Key Project: S06



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 ve preset elevations

to reduce hoisting time to suit ship sizes. Liftech

provided full procurement services for the project.

This is the rst elevating girder crane built worldwide.

Liftech won a SEAONC 2004 Excellence in Structural

Engineering Award for Special Use Structures.

Reference:

Virginia Port Authority

Norfolk, Virginia

Elevating Girder Crane Design

Virginia Port Authority, Norfolk, VA


Key Project: C24



In response to the community’s desire to preserve the

marine view, Port of Los Angeles offered to consider

low prole cranes for Berths 100–102. Liftech

studies indicated that the conventional low prole

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, veried the performance

of the crane and wharf with non-linear pushoveranalysis and time history analyses using SAP2000 and

Ruaumoko.

Reference:

Port of Los Angeles

Los Angeles, California

Low Profile Crane Conceptual DesignPort of Los Angeles, California


Key Project: C30




Four post-Panamax cranes were designed to meetspecic requirements of Port Everglades, including

strict aircraft clearance requirements and efcient

structures to withstand hurricane winds. The inclined

landside leg signicantly reduced the weight. An

improved adjustable boom hanger system increased

reliability and enhanced boom travel performance.

Liftech designed the cranes, checked shop drawings,

prepared operating and maintenance manuals, and

reviewed the fabrication, assembly, ocean shipping,

and testing.

Three additional post-Panamax cranes were designedin 1998 to travel around a 90° curve. The trucks were

articulated for this purpose.

Reference:

Samsung Heavy Industries Co., Ltd.

Kyungnam, Korea

Low Profile Crane Design

Port Everglades, Florida

Key Project: C15



AmClyde supplied two semi-submersible vessels with

twin revolving derricks of 6,000 t and 7,000 t capacity

each.

Liftech was part of the AmHoist design team and

assisted in designing the crane booms.

Reference:

AmHoist

St. Paul, Minnesota

AmClyde Floating Cranes


Key Project: S11




Liftech provided the conceptual and nal structural

design and detail drawings for two post-Panamax low

prole container cranes. The inclined landside leg

signicantly reduced the overall weight, reduced the

wheel loads, and allowed for a lightweight boom.

Reference:

Paceco Corporation

Hayward, California

Low Profile Crane Design

Massachusetts Port Authority, Boston, Massachusetts

Key Project: C12




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 70.35 m (230’-

10”).

Liftech provided the structural design of the frame andarticulated boom and the mechanical design for the

articulation.

Reference:

Hanjin Heavy Industries Co.

Pusan, Korea

Post-Panamax Articulated Boom Cranes

Kaohsiung, Taiwan

Key Project: C03



West Basin Container Terminal purchased four

dockside container cranes from ZPMC for Berths

100-102 at Port of Los Angeles. Liftech provided the

technical specications, structural design and review

assistance, and fabrication support for the new cranes.

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 wererequired 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.

Client:

West Basin Container Terminal LLC

San Pedro, California

WBCT Crane Structural Design Review

San Pedro, California


Key Project: C46



ZPMC supplied an 8,000 t double boom shear leg

oating 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.

Liftech assisted ZPMC with developing the overall

concept and layout, and designing various crane

structural components.

Client:

ZPMC

Shanghai, China



Key Project: S17



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.

The photograph above shows the crane being

prepared for shipping.

Reference:

Felixstowe Dock and Railway Company

Suffolk, England, UK



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 torelocate the crane during the project’s construction.

Bigge Heavy Lift Cranes


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.

Reference:

Bigge Power Constructors

San Leandro, California

1 7 0 m

8 3 m

Key Project: S23



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.

Liftech designed the structures and collaborated

with TransHoist Engineering Inc. to conceptualize

and develop some new mechanical components.

Structural designs included the cranes, the waterside

and landside elevated girders, the landside supports,

and the moveable waterside supports. Mechanicaldesign included a new system for equalizing loads on

the tower frame traveling wheels using wire ropes.

Reference:

APM Terminals

FastNet

APM Terminals


Key Project: C57



Liftech assisted Sydney International Container

Terminals Pty Ltd with structural design and review

of four post-Panamax ZPMC low prole shuttle boom

cranes for their new container terminal across from an

airport in Sydney, Australia.

Liftech participated in the conceptualization anddesign 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 35 m

Overall height 52 m

Outreach 50 m

Container lift height 34 m above rail

Reference:

Hutchison Port Holdings

Hong Kong

Low Profile Crane Procurement

Sydney International Container Terminals Pty Ltd


Key Project: C58



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.

The crane is on a runway on a barge and resists

signicant voyage forces.

Liftech also reviewed the runway design.

Over the years, we designed modications to the

crane structure for increased lift height and provided a

structural maintenance program.

Reference:

Matson Navigation Company

Oakland, California

MES Barge Crane for Matson

with Rotating Boom and Headblock

Crane on barge elevated runway Headblock parallel to runway

Headblock rotated for maintenance; the other crane in the fore-

ground is a typical container crane

Documents

VA Crane Design Projects