Taking the extra-long bridge on Bao-Xi Railway across the Yellow River as an example,the 48m girder pre-casting technology,including reinforcement processing,formwork fixing,and concrete casting and curing,is introduced.

This paper provides the methods of concrete pouring and vibrating base on the summary of the constraction experience for many years.

By research on construction key technology, such as the fabriation, installation and concrete pouring of steel tube concrete arch rib of NO.

In this paper,the effects of unfavourahle conditions during rainy season on the construction quality are discussed,such as materials,steel welding and concrete pouring.

Combined with practical work,in view of the problems encountered in construction processes of manual hole digging pile such as un-derground water,shifting sand,mud and so on corresponding treatment measures are discussed as well as pouring construction of pile concrete.

Working practice of cast-in-site-concrete-casing-pile in expressway soft-soil reinforcement;