|Dr. N. Subramanian
Joined: 21 Feb 2008
Location: Gaithersburg, MD, U.S.A.
|Posted: Tue May 17, 2011 8:08 pm Post subject: Dr.-Ing. MAN-CHUNG TANG-The great Bridge Builder
|MAN-CHUNG TANG, Dr. - Ing., P.E.Chairman of the Board, Technical Director, T.Y. Lin International
by Dr. Man-Chung Tang and Leslie Jenkins
Registered Professional Engineer in Colorado, Florida, Georgia, Kentucky, Louisiana, Massachusetts, New Hampshire, New York, Ohio, Oregon, Pennsylvania, Tennessee, Washington, West Virginia
Ph.D., Civil Engineering M.S., Civil Engineering, Technical University, Darmstadt, Germany B.S., Civil Engineering, Chu Hai College, Hong Kong
Foreign Member of the Chinese Academy of Engineering Past President of the American Segmental Bridge Institute Member National Academy of Engineering "Honorary Member" American Society of Civil Engineers
Dr. Tang, TYLI's Chairman of the Board and Technical Director, has worldwide experience in the design and/or construction of more than 100 major bridges, including more than 30 cable-stayed bridges, four suspension bridges, and approximately 30 percent of all segmental bridges in North America. In June 2000, Dr. Tang was elected as a Foreign Member to the Chinese Academy of Engineering. The Chinese Academy of Engineering is the highest honorary and advisory organization for engineering and technology in China - an election to the Academy is considered the highest title and life-long honor an engineer can receive in China. Dr. Tang's other notable achievements include the 1999 Roebling Award for "major contributions to the technology for the design and construction of complex and long-span bridge structures worldwide." In addition, he received the 1998 John A. Roebling Medal for lifetime achievement in bridge engineering.
Dr. Tang, the world authority on cable-stayed bridges, was elected to the National Academy of Engineering in 1995 for his contribution to the advancement of cable-stayed bridges. He also served as Chairman of the American Society of Civil Engineers (ASCE) committee on Cable-Suspended Bridges and published "Guidelines for the Design of Cable-Stayed Bridges." He is the past President of the American Segmental Bridge Institute and has served on many technical committees. In addition, Dr. Tang is a founding member of the Post-Tensioning Institute committee that published "Recommendations for the Design and Testing of Stay Cables" used worldwide. Dr. Tang's projects include the following:
Seohae Grand Bridge, Korea:
Technical Director for the design of the 990-meter-long cable-stayed portion of the Seohae Grand Bridge with a main span of 470 meters. The bridge, the longest in Korea, will be 32 meters wide and will carry six lanes of traffic. The superstructure is a prestressed, precast concrete deck supported by transverse steel floor beams and two longitudinal steel main girders along the sides of the bridge. The towers are 182 meters high with a parallel strand cable system that includes 144 cables spaced 12 meters apart. The navigation clearance is 62 meters.
San Francisco-Oakland Bay Bridge, Oakland, California:
Director of Design and Concept Development for the new the replacement of the 2.1-mile eastern span of the Bay Bridge between San Francisco and Oakland. The design includes a 530-foot-high, single-pylon, self-anchored suspension bridge and a twin streamline box 1.6-mile concrete segmental skyway. The design consists of a slender, tower of four trapezoidal steel columns connected by transverse link beams. One large cable is draped from the tower's top. Suspender cables attach the main cable to girders beneath the road deck. The bridge will consist of two parallel roadways, each with five lanes and two shoulders; a bicycle/pedestrian path on the south side of the structure; and provisions for future light rail.
Sidney Lanier Bridge, New Brunswick, Georgia:
Dr. Tang was the Project Director for the design of this concrete cable-stayed bridge that is currently under construction. The new bridge will be 7,780 feet long. The cable-stayed bridge consists of two 625-foot side spans and a 1,250-foot-main span. The width of the bridge is 71 feet between curbs. The navigation channel is to have a minimum horizontal clearance of 400 feet and a vertical clearance of 185 feet, whereas the minimum clearance between pier protection islands is 1,040 feet. The span layout successfully addressed concerns regarding hazards to navigation of the existing lift span.
Second New Haeng Ju Bridge, Korea:
Technical Director for the design of five-span, 320-meter-long concrete box girder bridge. The 120-meter-long main span was constructed using balanced cantilever method, while the end spans were constructed on CIP falsework. Supervised alternative design using stay-cables anchored at temporary steel cable towers to advance the box girder segments without need of falsework.
Talmadge Memorial Bridge, Savannah, GA:
Designed this concrete cable-stayed bridge with 1,100-foot long main span. Making the deck section constant along the total length of the bridge, and using a simple box section for the towers, simplified erection of the structure.
Yangpu Bridge, Shanghai, China:
Commissioned by the Asian Development Bank, Dr. Tang did a detailed design review for this 602-meter span composite cable-stayed bridge. He was also responsible for training local engineers for the design and construction of this world record span bridge.
Annacis Island Bridge, Vancouver, British Columbia:
Dr. Tang led a group of engineers who analyzed all construction stages and provided the camber curves to the Contractor for this 1,526 feet span cable-stayed bridge over the Fraser River. The steel frame was erected in pieces by a derrick crane at each end of the cantilever.
Nanjing Yangtze Bridge, China:
Principal-in-Charge for the detail design review of this 628-meter span cable-stayed bridge with steel box girder and orthotropic deck, currently under construction.
Humen (Boca Tigris) Bridge, Guandgdong, China:
Special design and construction consultant for a 888-meter span steel suspension bridge with orthotropic deck.
Tagus River Bridge, Lisbon, Portugal:
Principal-in-Charge for the construction engineering for the strengthening of a steel suspension bridge with a 3,320-foot-long center span. The work included adding a second cable to carry the extra loading.
Xiamen Harbor Bridge, China:
Special consultant for a 780-meter span steel suspension bridge with an orthotropic deck.
Penang Bridge, Malaysia:
Project Manager for the construction planning and engineering for this 738-foot span concrete cable-stayed bridge. He also developed day-to-day procedures for erecting the bridge with supporting analysis. In addition, he led a group of technical personnel who were stationed at the job site during critical construction stages to custom-design the deck form travelers and other erection equipment.
Sunshine Skyway Bridge, St. Petersburg, FL:
Performed Design Review and CE&I Contracts for this concrete cable-stayed bridge with a 1,200-foot main span. The work included review and monitoring of the implementation of precast segmental cable-stayed box girders, high level segmental approach spans, precast piers, cast-in-place pylons and cable installation and adjustments.
ALRT Fraser River Bridge, Vancouver, Canada:
Dr. Tang provided construction engineering and design of special jack knife segment lifters for this 1,115-foot span concrete cable-stayed bridge. He also acted as special consultant for tower configuration and aerodynamics. This bridge is the first precast cable-stayed bridge to use a solid deck slab without transverse floor beams.
Baytown Bridge, Houston TX:
Construction engineering for a 1,200-foot span twin cable-stayed bridge. He worked with the Contractor to develop the most efficient erection scheme for these twin bridges. The steel frames were erected in a total segment and the concrete deck was erected as precast panels, which were made composite by the use of shear studs.
Denny Creek Bridge, WA:
Designed this 2,680 feet prestressed concrete bridge, using three-stage construction. The prestressed segmental concrete box girder was designed for erection and constructed using longitudinal segments. This bridge has won many awards including the ASCE Outstanding Civil Engineering Achievement, the PTI Award of Excellence and the Grand Award by the Washington Aggregates and Concrete Association.
Shubenacadie River Bridge, Nova Scotia:
Dr. Tang participated in the design of the superstructure and subsequently provided the construction engineering and camber control analysis to the Contractor. The structure was erected by means of the free cantilever method, utilizing cast-in-place segmental elements.
Knie Bridge, Dusseldorf, Germany:
Dr. Tang served as one of the principal engineers on the design/build team consisting of three steel companies that constructed the bridge. The bridge included an orthotropic deck and only one pair of towers, and was built by cantilevering the entire 1,050-foot long main structure across the Rhine River.
Pine Valley Bridge, CA:
Value engineering, redesign, and all construction engineering services for the Contractor of this first major cast-in-place segmental concrete box girder bridge built in the United States. It was the first major breakthrough for this type of construction in the United States.
Kipapa Stream Bridge, HI:
Dr. Tang provided redesign, value and construction engineering, and job site technical assistance for this structure with piers reaching a maximum height of 120 feet above the valley. The bridge includes spans of 205 feet + 6 x 250 feet + 205 feet. The free cantilever cast-in-place segmental construction method replaced the originally specified falsework construction for this major bridge structure.
Duisburg Neuenkamp Bridge, Duisburg, Germany:
Dr. Tang was the principal design engineer during both the design and erection. The design of the superstructure used new computer techniques of analysis, which he developed for cable-stayed bridges, and was erected by the free cantilever method.
East Huntington Bridge, Huntington, WV:
Dr. Tang performed construction engineering for this 900-foot-long, cable-stayed bridge. Dr. Tang lead a staff that developed an erection system using a barge-mounted ringer crane owned by the Contractor. His team also gave information on all camber and cable adjustments for the erection process.
Sanhao Bridge, Shenyang, China
This girder bridge is partially supported by cables and has a butterfly shape for its tower. This concept is quite new and rarely applied.was awarded the 2009 Eugene C. Figg Jr. Medal for Signature
Bridges sponsored by the International Bridge Conference (IBC).Dr. Man-Chung Tang, Chairman of the Board of TYLI, conceptualized the partially cable-stayed girder bridge design wherein the girder is employed as the primary load carrier and the cables are utilized as a secondary structural support member. With a span-to-depth ratio of 38.5, the girder is capable of carrying about 60 percent of the total load, requiring the towers/cables to support the remaining 40 percent of the total load. At a total length of 1,342 m and a total
width of 34 m, the bridge carries six lanes of city traffic and two 4.5-m-wide pedestrian/bicycle paths, one on each side of the deck. To minimize construction costs, the design features a prestressed concrete box girder for the 100 m main spans instead of a more costly steel box girder. City officials opened the bridge to traffic on October 10, 2008.