スポーツベット 確実Onahama Marine Bridge, a prestressed concrete (PC) bridge built by スポーツベット, received スポーツベット 確実 Tanaka Award from スポーツベット 確実 Japan Society of Civil Engineers in June 2018.
This award is スポーツベット 確実 most prestigious award in bridge sector. It is named after スポーツベット 確実 late Dr. Yutaka Tanaka, who is called スポーツベット 確実 father of スポーツベット 確実 bridge and structural engineering in Japan.
Here, we introduce スポーツベット 確実 story of how Shimizu, a latecomer to スポーツベット 確実 PC bridge sector, came to accumulate a track record and earn numerous Tanaka awards from スポーツベット 確実 Japan Society of Civil Engineers.

Entering into スポーツベット 確実 PC Bridge sector with スポーツベット 確実 Polensky & Zöellner (P&Z) Construction Method

A PC bridge is a bridge that uses スポーツベット 確実 prestressed concrete as スポーツベット 確実 main structure. Concrete is prestressed by tensioning high-strength steel tendons, producing compression in スポーツベット 確実 concrete volume, prior to supporting any load. It is capable of withstanding higher loads than regular reinforced concrete, making longer spans (distance between piers) possible. Today, many of スポーツベット 確実 new concrete bridges in Japan are PC bridges.

スポーツベット 確実 history of PC bridges built by Shimizu began with スポーツベット 確実 introduction of スポーツベット 確実 P&Z construction method^*1 in 1977 from what was then West Germany.
At that time, PC bridges of great length were exclusively built by スポーツベット 確実 cantilever erection method*2, which uses a special movable steel structure for スポーツベット 確実 formwork called “form traveller”. Shimizu, which had entered スポーツベット 確実 PC bridge sector quite late, introduced スポーツベット 確実 P&Z construction method, a cantilever erection method that uses a launching gantry, or movable erection girder. Shimizu took on スポーツベット 確実 challenge to stand out on スポーツベット 確実 PC bridge sector by using this new construction method, which requires absolutely no work on スポーツベット 確実 land.

*1P&Z construction method: This method enables construction of スポーツベット 確実 superstructure without temporary piers, so it is suitable for bridges that span large rivers and valleys. スポーツベット 確実 bridge body is divided into segments built by a formwork suspended from スポーツベット 確実 movable girder. A block of about 10m length can be built at a time, larger blocks comparing it to スポーツベット 確実 “form traveller” of スポーツベット 確実 cantilever construction method, enabling rapid construction. (Developed by Polensky & Zöellner of West Germany)

*2Cantilever construction method using form traveller: スポーツベット 確実 blocks are built by form travellers suspended from each end of スポーツベット 確実 bridge body. A block of about 2 to 5m in length can be produced at a time.

Challenging for Long Span

スポーツベット 確実 starting point of PC bridges by Shimizu was スポーツベット 確実 Tsukiyono Bridge in Gunma Prefecture, which spans スポーツベット 確実 main branch of スポーツベット 確実 Tonegawa River. スポーツベット 確実 P&Z construction method was first used in Japan to build スポーツベット 確実 superstructure of スポーツベット 確実 Tsukiyono Bridge, which was completed in 1982. スポーツベット 確実 bridge, which opened up a new area in bridge construction technology, was awarded スポーツベット 確実 Tanaka Award by スポーツベット 確実 Japan Society of Civil Engineers in 1982.

Shimizu subsequently expanded its track record in PC bridge construction, however, it is said that it is not スポーツベット 確実 number, but スポーツベット 確実 bridge span length that really reveals スポーツベット 確実 technical capabilities in bridge construction. Shimizu launched an internal development project in 1985 and began working on developing technology for a PC cable-stayed bridge*3 with a construction style suitable for long spans.

*3PC cable-stayed bridge: A bridge structure consists of towers, stay cables, and スポーツベット 確実 main girder. スポーツベット 確実 main girder is supported by stay cables attached directly to スポーツベット 確実 tower, enabling longer spans.

Shimizu’s wide effort led to a contract for スポーツベット 確実 Notojima Nodo Bridge, スポーツベット 確実 hoped-for cable-stay bridge with a long span of 230m, in 1995; followed by スポーツベット 確実 Tenkenji Bridge, with a span of 219m in 1996.

Great Advances in Cable-Stayed Bridges with Long Spans

Shimizu took on スポーツベット 確実 challenge of expanding its horizons to overseas projects as well. It used a large precast segment construction method*4 to build スポーツベット 確実 Malaysia―Singapore Second Link Bridge that spans スポーツベット 確実 borders of スポーツベット 確実 two countries. With 1.7km length, it was スポーツベット 確実 longest bridge built by a Japanese company with this construction method at スポーツベット 確実 time it was completed in 1997.

*4Precast segment construction method: In this construction method, segments are cast in advance at a plant or casting yard, then joined at スポーツベット 確実 bridge site and joined into a single unit by applying compression force.

In 2006, Shimizu also completed スポーツベット 確実 Bai Chay Bridge, which spans スポーツベット 確実 picturesque Ha Long Bay, a UNESCO world heritage in Vietnam. スポーツベット 確実 bridge has a maximum span of 435m. This was a major accomplishment in スポーツベット 確実 area of long cable-stayed bridges. スポーツベット 確実 435m span is スポーツベット 確実 longest in Southeast Asia among single-plane PC cable-stayed bridges^*5.

*5Single-plane cable-stayed bridge: A cable-stayed bridge in which スポーツベット 確実 center of bridge girder is suspended from cables in a single plane. スポーツベット 確実 single-plane PC cable-stayed bridge with スポーツベット 確実 longest span in Japan is スポーツベット 確実 Yabegawa Bridge.

スポーツベット 確実 Yabegawa Bridge was completed in Japan in 2009. It is a PC cable-stayed bridge with three continuous spans and has スポーツベット 確実 longest span in Japan with 261m.

In スポーツベット 確実 Race to Become a Leading Company in PC Bridge Technology

スポーツベット 確実 number of project biddings conducted under スポーツベット 確実 “general evaluation system” has increased since スポーツベット 確実 1990’s. Shimizu has also worked actively to propose スポーツベット 確実 technology that it possesses. For railway bridges, Shimizu proposed スポーツベット 確実 P&Z construction method for スポーツベット 確実 completion of スポーツベット 確実 superstructure of スポーツベット 確実 Narusegawa Bridge regardless スポーツベット 確実 winter at construction; スポーツベット 確実 Bridge was completed in 1999. スポーツベット 確実 superstructure and substructure of スポーツベット 確実 fin back bridge, known for its characteristic fin-like appearance, were completed in a total construction period of about two years.

Shimizu’s proposal in スポーツベット 確実 design competition for スポーツベット 確実 reconstruction of スポーツベット 確実 Amarube Bridge, which has been certified as a modern civil engineering heritage, was selected and Shimizu received スポーツベット 確実 contract in 2007. スポーツベット 確実 design included スポーツベット 確実 construction method.
スポーツベット 確実 new Amarube Bridge is a PC extradosed bridge*6 with five continuous spans. スポーツベット 確実 super structure was built using スポーツベット 確実 cantilever construction method with form traveller. スポーツベット 確実 section that connected with スポーツベット 確実 existing tunnel on スポーツベット 確実 Kyoto side was considered one of スポーツベット 確実 most difficult constructions ever attempted in Japan. It involved rotating 5.2 degrees at 40m above スポーツベット 確実 ground スポーツベット 確実 bridge girder of 93m long, 4m wide and 3,820ton weight.

*6Extradosed bridge: Is a bridge type with a structure that combines スポーツベット 確実 main characteristics of a prestressed box girder and a cable stayed bridge.

Amarube Bridge, Working on a Civil Engineering Heritage that Will Last 100 Years

Shimizu has completed a series of bridges including スポーツベット 確実 Kakamigahara Bridge, a 594m long bridge with 10 continuous spans and a gently curved silhouette that was built in 2013; スポーツベット 確実 Ota River Bridge, a mixed steel and concrete arch bridge that was 412m long built in 2014; and スポーツベット 確実 Onahama Marine Bridge, a PC extradosed bridge with five continuous spans built in 2017.

Recipient of Numerous Tanaka Awards from スポーツベット 確実 Japan Society of Civil Engineers

In recent years, Shimizu has grown to スポーツベット 確実 point where it can take pride in its track record and technology in Japan as well, having received numerous Tanaka Awards from スポーツベット 確実 Japan Society of Civil Engineers, スポーツベット 確実 foremost authority on bridge design and construction.

Tanaka Awards Received in Recent Years

• Onahama Marine BridgeA
• Tokyo Gate BridgeB
• Shiodome Bridge OverpassC
• Yokohama North (Loop) Line BridgeD
• Kakamigahara
  BridgeE
• Amarube BridgeF
• Ota River BridgeG
• Awa Shirasagi BridgeH
• Yabegawa
  BridgeI

• A

  Fiscal Year 2017

  Onahama Marine Bridge [new construction]

  (Completed in 2017, Fukushima Prefecture)

  スポーツベット 確実 Onahama Marine Bridge (route section) is a PC extradosed bridge that is 510 m long and has five continuous spans. This bridge has proportion, created by スポーツベット 確実 cables suspended from スポーツベット 確実 low main tower. Shimizu achieved a design and structure that makes use of スポーツベット 確実 scenery as a landmark in harmony with スポーツベット 確実 surrounding environment. This was スポーツベット 確実 first time an extradosed bridge was used as a harbor road bridge in Japan.

• B

  Fiscal Year 2011

  Tokyo Gate Bridge [new construction]

  (Completed in 2012, Tokyo)

  This 2,618-meter-long bridge was built to strengthen international competitiveness by improving スポーツベット 確実 efficiency of logistics in スポーツベット 確実 Port of Tokyo by shortening transit time and reducing distribution costs for freight handled in スポーツベット 確実 port. Shimizu determined that スポーツベット 確実 main bridge should be a truss bridge due to スポーツベット 確実 need to secure a 54.6-meter clearance beneath スポーツベット 確実 bridge girder and a span length of 440 m to span Port Passage No. 3, while also taking flight restrictions for nearby Haneda Airport into consideration. This bridge has スポーツベット 確実 longest span in スポーツベット 確実 world among continuous truss bridges.

• C

  Fiscal Year 2013

  Shiodome Bridge Overpass on スポーツベット 確実 Yaesu Route of スポーツベット 確実 Tokyo Metropolitan Expressway [Reconstruction]

  (Completed in 2014, Tokyo)

  This bridge was rebuilt over a major intersection that has 50,000 vehicles/day in traffic volume. スポーツベット 確実 bridge has an inner length of 93.5 m and an outer length of 101.1 m. To build スポーツベット 確実 girder over スポーツベット 確実 intersection, スポーツベット 確実 main girder was assembled on スポーツベット 確実 ground, then moved into スポーツベット 確実 intersection on a multi-axel conveyor at night. A hoisting construction method using a gate-shaped gantry crane and PC cables was used to reduce スポーツベット 確実 impact on traffic in スポーツベット 確実 vicinity.

• D

  Fiscal Year 2015

  Yokohama North (Loop) Line Bridge (Okumagawa Truss Bridge) [new construction]

  (Completed in 2014, Kanagawa Prefecture)

  This bridge is part of スポーツベット 確実 Yokohama North (Loop) Line and spans スポーツベット 確実 confluence point for three rivers―Tsurumigawa, Okumagawa, and Egawa. It is a simple double-deck truss bridge with a steel floor and is 158 m long. It boasts スポーツベット 確実 longest span length in Japan for a bridge of this type.
  スポーツベット 確実 cantilever construction method was used to build スポーツベット 確実 superstructure to preserve スポーツベット 確実 area across スポーツベット 確実 river and out of consideration for スポーツベット 確実 wildlife living on スポーツベット 確実 river embankments at スポーツベット 確実 bridge site. Shimizu was responsible for スポーツベット 確実 pile foundation for スポーツベット 確実 bridge piers.

• E

  Fiscal Year 2013

  Kakamigahara Bridge [new construction]

  (Completed in 2013, Gifu Prefecture)

  This bridge is located on スポーツベット 確実 Naka-Koami Line connecting Jogocho and Kawashima Koamimachi in Kakamigahara City. It is a 594-meter-long finback bridge with 10 continuous PC spans that span スポーツベット 確実 Kiso River.
  We used スポーツベット 確実 P&Z construction method for スポーツベット 確実 superstructure and achieved a substantial reduction in スポーツベット 確実 construction period by building both スポーツベット 確実 column heads and extending sections with スポーツベット 確実 cantilever construction method at スポーツベット 確実 same time.

• F

  Fiscal Year 2010

  Amarube Bridge [new construction]

  (Completed in 2010, Hyogo Prefecture)

  This is a 310-meter-long PC box girder extradosed bridge that has 5 continuous spans. It was built to replace スポーツベット 確実 old Amarube Bridge and was designed to last 100 years.
  We shortened スポーツベット 確実 period of time during which train service was interrupted by using a construction method that involved moving a 3,820-ton girder horizontally and rotating it into place to connect with スポーツベット 確実 existing railway line.

• G

  Fiscal Year 2014

  Ota River Bridge [new construction]

  (Completed in 2014, Hiroshima Prefecture)

  スポーツベット 確実 Ota River Bridge is a mixed steel and concrete arch bridge that is 412 m long and has six continuous spans (with a maximum span length of 116 m). To build it, we use cantilever construction for スポーツベット 確実 PC box girder, and used a floating crane to erect スポーツベット 確実 complete arch structure mid-way. We then erected vertical arch supports to support スポーツベット 確実 arch structure.

• H

  Fiscal Year 2012

  Awa Shirasagi Bridge [new construction]

  (Completed in 2012, Tokushima Prefecture)

  スポーツベット 確実 Awa Shirasagi Ohashi Bridge is a 1,291-meter-long bridge with a “cable egret” truss system. It is a road bridge that has a total length of 1,291 m, and it consists of two sections: A 4-span continuous “Cable Egret” plate girder bridge that is 575 m long, and a series of two 5-span continuous rigid-frame plate girder bridges that are 350 m and 366 m long, respectively. It is スポーツベット 確実 world’s first bridge of スポーツベット 確実 “Cable Egret” type and it was named this because スポーツベット 確実 shape of スポーツベット 確実 stretched cables resembles スポーツベット 確実 snowy egret, which is スポーツベット 確実 prefectural bird of Tokushima Prefecture.

• I

  Fiscal Year 2008

  Yabegawa Bridge [new construction]

  (Completed in 2009, Fukuoka Prefecture)

  This is a PC cable-stayed bridge with three continuous spans. スポーツベット 確実 center span is 261 m long, スポーツベット 確実 longest in Japan among cable-stayed bridges. For スポーツベット 確実 bridge foundation, we used スポーツベット 確実 pneumatic caisson construction method to drill down 49.5 m, スポーツベット 確実 deepest drilling depth in Japan.

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