THE INCA SYSTEM FOR THE CONSTRUCTION OF NEW ARCH BRIDGES

This paper presents the innovative concrete arch (INCA) system for building a bridge of durable articulating arch construction. The INCA system provides an economic solution to construction difficulties experienced in the past, and ensures adequate protection against serviceability and ultimate limit states. It uses a polymer concrete arch former to play the part of traditional centring. This is strong enough to support the construction of the main in-situ concrete arch of the bridge, without the need for a complex framework support. The arch former is thin and precast in individual widths, which are transported to the site, installed between bridge substructures, and bolted together. The material used in the former is a concrete made with aggregates bound only with a polymer matrix; it will undergo full laboratory performance tests. The following factors need to be considered while designing an INCA arch bridge: (1) an arch profile that minimises bending in the INCA former, and is finally efficient as an articulating arch ring; (2) appropriate depth of fill above the arch; (3) size and weight of INCA former; (4) the effects of skew; and (5) site-related factors. INCA makes it viable to construct durable concrete arch bridges.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0727720481
• Corporate Authors:

  Thomas Telford Limited

  London,   United Kingdom 
• Authors:
  • ROCKE, R S
  • BRIDLE, R J
• Conference:
  • ARCH BRIDGES. PROCEEDINGS OF THE FIRST INTERNATIONAL CONFERENCE ON ARCH BRIDGES HELD AT BOLTON, UK 3-6 SEPTEMBER 1995
• Publication Date: 1995

Language

• English

Media Info

• Features: References;
• Pagination: p. 635-44

Subject/Index Terms

• TRT Terms: Arch bridges; Arches; Conferences; Construction; Durability; Polymerization; Precast concrete; Test procedures
• ITRD Terms: 3373: Arch (structural); 3427: Arch bridge; 8525: Conference; 3655: Construction; 5910: Durability; 7481: Polymerization; 4792: Precast concrete; 6288: Test method
• Subject Areas: Construction;

Filing Info

• Accession Number: 00720004
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-7277-2048-1
• Files: ITRD
• Created Date: Apr 26 1996 12:00AM