A preflex beam abutment integral bridge and construction method

摘要

For the present design is H files and free flex beam and the connecting slab is pre-flex beam alternately stretch the displacement process of the upper structure due to temperature and the bottom earth pressure in the monolithic bridge is constructed integrally, the stretching between the connecting slab and shift back surface soil study with the joint portion, by allowing the displaced displacement occurs, the stretching by using the device characteristics of the vagina, to provide a pre-flex beam shift integral bridges to handle a reasonably displaced it is an object.; This is designed to prevent silt runoff ends cured by pouring concrete on bridges and walls; H file number dog pile driving intrusion in a line up to a predetermined position of the ground in front of the protection wall and the soil outlet; Free flex beam is mounted on the upper horizontally on the H and file; H and the file including the connection of the flex-beam and the free pouring and curing of concrete and alternately; And connecting the slab is installed on the upper portion of the shift; As soon located in a lower portion of the rear shift and earth and sand between the leakage preventing walls and the connection of the slab is installed, the water pipe at the same time on a lower surface and backfill; It characterized the connecting slab stretching provided for accommodating the expansion and contraction of the bridge at the rear and prevents earth and sand fill out of a trunk walls are comprised of a vagina.