| 摘要 |
PROBLEM TO BE SOLVED: To provide a floor slab bridge preventing displacement of mutual square steel pipes due to load carrying and integrating the whole structure by introducing prestress into the square steel pipes through a means enabling saving of construction and cost reduction and realizing expectation of prevention of rain penetration from an upper face, reduction of a cross section due to distribution of load in a horizontal direction or the like. SOLUTION: In the production of the floor slab bridge constituting a road face by laying a plurality of the square steel pipes, a load is applied to side faces of the plurality of the square steel pipes 1 from a vertical direction to be laid, and rod shaped members 7 having sliding preventive means on a surface are inserted from side faces of the square steel pipes 1 and a secular hardening material 8 such as concrete is placed inside the square steel pipes 1 including the peripheral area of the rod shaped members 7, and the load is released after the secular hardening material 8 is cured, and prestress is introduced into the mutual square steel pipes. COPYRIGHT: (C)2007,JPO&INPIT
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