WATERPROOFING STRUCTURE AT JOINTS BETWEEN PRECAST CONCRETE SEGMENT BLOCK USING A WATERPROOFING SEAT

摘要

The present invention relates to a waterproof structure of the joint concrete block, in the prior art, there is a disadvantage such that the swelling index can be re-installed or injected into the mortar, but the operation is complex and time according to install the joint required.; The invention precast concrete segment block is in the seam waterproof structure of the tunnel being connected in series, and install the number of the free swelling index material 13 between the ends of the cast concrete block segment 10, which face each other; The pre-cast to a respective fixed installation, the waterproof sheet 12, both ends of the concrete segment blocks (10), characterized in that adhesive bonding to a waterproof sheet 12 which face each other inside the tunnel.; According to the present invention, enhance the airtightness of the joint portion between the concrete blocks in a simple waterproof construction and being able to ensure the water resistance of the tunnel, prevent plant damage due to water leakage, and it is possible to improve the life of the facility.