PACESETTING CALIFORNIA SPANS GORGE WITH GERMAN BRIDGE SYSTEM

THE ARTICLE BRIEFLY DESCRIBES THE PINE VALLEY CREEK BRIDGE, 80 KM FROM SAN DIEGO IN CALIFORNIA. THE BRIDGE WORK WAS STARTED IN MARCH 1972 AND SHOULD BE COMPLETED BY NOVEMBER 1974. THE CHOICE OF CANTILEVER SEGMENTS OF PRESTRESSED CONCRETE CAST-IN-SITU, IS ESTIMATED TO COST 10 PER CENT LESS THAN THE CONVENTIONAL TYPE OF BRIDGES. THE ORIGINAL DESIGN W1S DEVELOPED IN GERMANY. THERE ARE 4 PIERS OF EACH MADE UP OF TWO RECTANGULAR CELLULAR COLUMNS STRUTTED TOGETHER AND FLARED AT THE TOP TO FORM A 'Y' SHAPE. EACH ARM OF THE 'Y' SUPPORTS A BOX GIRDER THE WIDTH OF A DUAL LANE CARRIAGEWAY WITH SHOULDERS. FOOTINGS ARE ANCHORED BY 32 MM PRESTRESSED BARS TO SOLID ROCK 6 METRES BELOW GROUND. A CONCRETE MIX WITH 510 KG OF FINELY GROUND CEMENT PER CUBIC METER IS USED TO REDUCE THE STRIPPING TIME OF FORMS. IT IS REQUIRED TO DEVELOP STRENGTHS OF 18 N/MM2 IN 24 HOURS AND 35 N/MM2 IN 28 DAYS.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03077683
• Corporate Authors:

  Institution of Civil Engineers

  One Great George Street, Westminster
  London,   United Kingdom  SW1P 3AA
• Authors:
  • Hill, F B
• Publication Date: 1974-5-16

Language

• English

Media Info

• Features: Photos;
• Pagination: p. 6-9
• Serial:
  • NEW CIVIL ENGINEER
  • Issue Number: 92
  • Publisher: EMAP CONSTRUCT LIMITED
  • ISSN: 0307-7683

Subject/Index Terms

• TRT Terms: Anchorages; Bars (Building materials); Box girders; Bridge anchorages; Bridge design; Bridge piers; Bridges; Cantilevers; Cast in place concrete; Concrete; Design; Foundations; Mix design; Prestressed concrete; Strength of materials; Structural design
• Geographic Terms: Germany; United States
• ITRD Terms: 3420: Anchorage; 3461: Bar; 3474: Box girder; 3455: Bridge; 3434: Bridge pier; 3450: Cantilever; 4781: Cast in situ concrete; 4755: Concrete; 9011: Design (overall design); 3377: Foundation; 8125: Germany; 4714: Mix design; 4796: Prestressed concrete; 5544: Strength (mater); 8122: USA
• Subject Areas: Bridges and other structures; Construction; Design; Highways; I24: Design of Bridges and Retaining Walls; I53: Construction of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00083853
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: May 1 1975 12:00AM