| 摘要 |
PROBLEM TO BE SOLVED: To provide a tentatively installed work scaffolding that is used when maintaining and inspecting a pedestrian overpass or a passengers' overpass, does not require any traffic regulation above and below a bridge, can be safely erected or eliminated, and has improved working efficiency. SOLUTION: A work scaffolding 10 is detachably gear-locked to the side part of a bridge body, and is composed of a number of gear-lock iron goods 20 with a roller support for receiving a horizontal rod, and a number of unit work benches that are extended and suspended at the side outside of the bridge body.
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