| 摘要 |
PURPOSE: A stiffened form for drainpipe is provided to protect a drain way pipe passing through a poor ground with the possibility of unexpected sinking or a roadway transmitting a concentrated force to the pipe from being damaged, by reinforcing the pipe with a form and mortar, therefore to increase stiffness. CONSTITUTION: The stiffening form for a drain way pipe is composed of: a fastening rim(12) placed around the circumstance of a spiral pipe at regular distance; a spiral pipe with a grooved space located inside an outer form(16); Mortar(18) flowing downward and filled into the grooved space up to nearby an injection hole(17); an arced reinforcing bar combined with mortar poured through an injection hole(17), therefore resulting in the effect of reinforced concrete structure.
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