| 摘要 |
PURPOSE: The connecting method of a concrete drain is provided to prevent the corrosion of a bolt and maintain the fastening power of the concrete drain. CONSTITUTION: An outer sealing material(41) is attached to the whole outer circumference of the front side(15) or rear side(16) of a concrete drain for locating a bolt-inserting groove(15a',15b',15c',15d') in the middle of an outer sealing material and an inner sealing material(42). And the inner sealing material is attached to the whole inner circumference. A couple of concrete drains(10,20;20,30) are faced for inserting the convex part of the rear side(16) of the concrete drain into the concave part(15f) of the front side(15) of the concrete drain. Previously, a bolt is put in the bolt-inserting groove of the concrete drain, and both sides of the bolt are projected to the fastening groove(10b,20b) of the concrete drain. A nut is fastened in the state inserted a supporting member for injecting grout mortar in both sides of the bolt. Then, a couple of concrete drains are integrated in a body. Grout mortar is injected into the bolt-inserting groove through the supporting member for injecting grout mortar. Grout mortar is filled and cured in the interval of the bolt-inserting groove and the connecting surface(16).
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