International Concrete Abstracts Portal

Title: INNOVATION ON FULLY PRECAST BRIDGE CONSTRUCTION TECHNOLOGY

Author(s): Demonstration of Wang Jariya, Dr. Songyat Thammopayo

Publication: TCA

Volume: 3

Issue: 1

Appears on pages(s): 22-29

Keywords: Fully Precast Bridge Construction Technology, Barrette pile Foundation, Precast Column, Precast Crossbeam, Precast Box Segment, Continuous Span Bridge, Launching Erection Truss

DOI:

Date: 1/1/2015

Abstract:
This paper describes the innovation on a fully precast bridge construction technology, in which all of the bridge’s components (Column, Crossbeam and Viaduct) are prefabricated as precast elements at casting yard and transported to construction site for a rapid installation. The name of the project is the Laksi Interchange, locating at the intersection between Ram IntraChangwattana road and Phaholyotin road, north of Bangkok, where the traffic conditionis the worst in Bangkok.The details of developing processes which consist of Project Planning, Design development of Bridge’s Geometry and Structureand Construction technique are demonstrated. The points of highlight are firstly, the design of precast segmental bridge which introduces the overall efficient design in such a way that the foundation size of the bridge, using Barrette piles, can be minimized,resulting in less interruption of underground utilities (water pipes, power line cables) and traffic lanes. Secondly, the bridge elements (column, crossbeam and viaduct) are prefabricated as precast element in advance at the casting yard and are able to be deliveredto the construction site for rapid installation, rendering speedy construction and less interference to traffic since no scaffolding and shoring systems are required when comparing to the conventional cast in-situ bridge construction. This innovative construction technique is obviously able to demonstrate the fast track construction which not only gains the benefit on time saving but is also afriendly constructionto the public. It provides the proven solution in solving and diluting the difficulties and problems during construction of large scale bridge projects in the big city like Bangkok where the traffic is the terrible situation.