Dismantling Construction Technique of the Super-long Trestle Bridge at South-bank of Hangzhou Bay Sea-crossing Bridge

The super-long trestle bridge at south-bank of Hangzhou Bay sea-crossing bridge is an important temporary structure,which has semi-permanent feature.This paper introduces dismantling design and construction of the trestle bridge,and puts emphasis on reinforcement design in dismantling construction of the trestle bridge,dismantling construction gist of road plates of bridge,Bailey beams and steel pipe piles.The problems which may be paid attention to in dismantling construction are expatiated.The practice of the project proved this dismantling construction method of the trestle bridge was reasonable and could satisfy the project's requirement.