Culvert construction method

摘要

PROBLEM TO BE SOLVED: To provide a method of constructing a culvert which can shorten the construction term without raising the construction cost sharply.SOLUTION: A method of constructing a culvert comprises: a first step of constructing an inverted arch 1, and then erecting a plurality of supports 2 spaced apart in predetermined intervals across the extended direction of the constructed inverted arch 1; a second step of forming reinforced sections of post-arrangement of reinforcement steel bar by arranging the reinforcement steel bars 3a,3b for the culvert so as to be supported by the plurality of supports 2; and a third step of locating an arced center ST1 provided with a lower mold frame K1 throughout a partial one of reinforced sections of post-arrangement of reinforcement steel bars, constructing the culvert at the partial section by injecting concrete on the lower mold frame K1, installing an arched center ST1 in another partial section of reinforced sections of post-arrangement of reinforcement steel bars, and constructing the culvert at another partial section.SELECTED DRAWING: Figure 4