Shanxi preservative Wood Bridge

Shanxi broad new number (http://www.gxhffm.com/) you share with antiseptic Wood bridge structural characteristics: the wooden bridge is made of wood to create a bridge. Early use of wooden bridge, in addition to a wooden structure on the history of bridge, wooden truss bridge, there are wooden arch bridge. Simple wooden structure, construction agile, but wood perishable, easy to crack (dry climate regions), vulnerable to fire, and the strength is poor, it was used for the pedestrian bridge, temporary bridge or temporary repairs or construction as much as possible during long-term use of Highway bridge. To try to long-term use of the wooden bridge, as do anti-corrosion disposal. The primary structure with pressure and shear force transmission boardwalk, and its tension joints, shear bolt and bolt hole by passing pressurized tension and bolts, plywood, nailing, grilled pieces of iron nails and other fixed components each location. Wooden type: usually the role of the wooden bridge type has wooden beams, wooden bridges and wooden truss bridge support. 1 wooden beam bridge. Usually no more than -8 m span, wooden beams can be used to level the wood-sided or square wood composition, can be made single-beam, superposed beams or composite beam (with a key pass, shear between the lower beam of wood). Its mostly wooden trestle piers composed of, so called raft bridge. Or wooden trestle. 2 wooden bridge support. Evolved from wooden beams bridge made of wooden beams extending from the pier supporting bracing to increase the span or load capacity. 3 wooden truss bridge. Common cross-abdominal truss rod, that Howard's truss beam shots wooden structure, its chords and diagonals wooden, vertical rod with round belly. Can be used to span no more than 40 meters of the highway bridge. Features wooden structure: the wooden stakes available in addition to the foundation, but also the common foundation of wood lying, wooden blocks and wooden cages bedrock foundation piles. Lying wooden foundation: usually used dry bridge. Shop after digging gravel pit cushion, closely spaced longitudinal skids made. Trestle piers on which stand, gravel backfill. Wooden cages foundation: the logs or square wood stacked into a bottomless or bottomed wooden cages. Usually made on the shore floating in place, then fill the stone ballast, so sinking river channel. When the piece of stone to fill out of the water, the foundation will be formed. Wooden cages pile foundation: To increase the crib foundation embedment depth, may be playing stakes in a wooden cage, and then to fill the stone enclosure, the pile tight squeeze.