SYNOPSIS

This topic provides an overview of the design and construction of concrete segmental box girder (SBG) bridge using precast and cast in-situ methods.  During the talk, the advantages and limitation of the precast and cast in-situ segmental box girder bridge will be highlighted.   Besides, the fundamental and design consideration of the concrete segmental box girder bridge will be highlighted.  The typical prestress and steel reinforcement details for SBG and their erection method will be explained.  The types of temporary work involved in the erection of the precast segmental box girder as well as the form traveler (bridge builder) for the cast in-situ segmental box girder will be presented. Some of the construction related matters like, temporary fixity system, box girder dimension control; precamber design and Christmas tree and the mid-span stitching will be explained.


BIODATA OF SPEAKER

Ir. Dr. LOW HIN FOO
B.Eng (Hons) Civil, PhD (Structure), CEng MIStructE, MIEAust CPEng,
MIEM PEng, ASEAN Eng, APEC Engineer, IntPE(MY)

Ir. Dr. Low Hin Foo graduated from University Malaya with an Honours degree in Civil Engineering.  Since then he has more than 18 years of design and construction experience in various reinforced concrete and post-tensioned buildings as well as bridges both locally and abroad. He was the Technical Manager for prestressing specialist contractor, BBR Construction Systems, and he is currently the Principal Engineer for a design consultancy firm, OSD Consultants (M) Sdn Bhd.

Ir. Dr. Low has vast experience in the design and construction of long span bridges using precast and cast in-situ prestressed concrete segmental box girders (SBG) as well as integral bridges with drop-in spans. His bridge experience also includes the design and construction of cable-stayed and steel arch bridges. On top of that, he has extensive experience in the design of prestressed structures for large commercial projects and high-rise towers, particularly in handling the design of prestressed flat slab or flat plate systems with irregular column grids, including prestressed transfer plates.
He is currently working on research projects with Monash University Malaysia on the experimental and numerical studies on the prestressed transfer plates subjected to staged casting and sequential stressing. He is also actively involved in the training of engineers and undergraduates by conducting courses on the design of prestressed building and bridge structures.