Small rural highway bridge rebuilding and reinforcement method

Abstract

The invention discloses a small rural highway bridge rebuilding and reinforcement method, and belongs to the field of bridge engineering. Particularly, a concrete single-span simply support hollow slab bridge on a small rural highway is rebuilt and reinforced, and the method includes the steps of rebuilding a supporting structure and reinforcing a bridge floor. A steel structure supporting system made of a steel material is adopted to auxiliarily rebuild the supporting structure of the concrete single-span simply support hollow slab bridge, and the load bearing force of the original bridge is increased; the flexural-tensile strength of the slab bride is improved by adopting the fiber concrete reinforced bridge floor made of multiple kinds of fiber and concrete, and the fracture resistance, fatigue resistance, abrasion resistance and impact resistance are remarkably enhanced. The method is simple in construction and convenient to operate and shortens the construction period.

Description

technical field [0001] The invention belongs to the field of bridge engineering, and in particular relates to a method for rebuilding and strengthening rural small highway bridges. Background technique [0002] With the rapid development of rural transportation in my country, bridges on rural roads are burdened with very heavy traffic loads and heavy traffic volume. The level of construction technology is low, the equipment, means and materials are outdated, the long-term lag in operation and management after the bridge is put into operation, the construction of management system and team building have been neglected for a long time, the management and maintenance fees have been occupied and embezzled, and the operating vehicles have been generally overloaded and seriously overloaded for a long time. contain. As a result, various large and small diseases have occurred on a large number of rural road bridges, such as bridge deck damage, railing breakage, expansion joint damage...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of rural transportation in my country, bridges on rural roads are burdened with very heavy traffic loads and heavy traffic volume. The level of construction technology is low, the equipment, means and materials are outdated, the long-term lag in operation and management after the bridge is put into operation, the construction of management system and team building have been neglected for a long time, the management and maintenance fees have been occupied and embezzled, and the operating vehicles have been generally overloaded and seriously overloaded for a long time. contain

As a result, various large and small diseases have occurred on a large number of rural road bridges, such as bridge deck damage, railing breakage, expansion joint damage, bridge head jumping, concrete spalling, bridge head subgrade erosion, etc., which have destroyed the normal and good state of the bridge. , not only greatly shorten the service life of bridges, but some have already threatened the safety of passing people and vehicles and become dangerous bridges.