manhole update the structure and construction of new manhole structure

摘要

The present invention relates not allowed to proceed further deterioration is not apply a large load to the existing straight wall , water leakage is enhanced the strength of the manhole without also, it will provide an update structure of the manhole that can be extended to long life. Enhanced inside existing straight wall 1 after removing the An inside of the existing steps of the road paving layer and the member and the existing straight wall 1 on the outside of the ground of the existing straight wall 1 of manhole The composite made in step 3a is fitted to the cylindrical body 3 mounted on the inside, it is joined by pouring a cementitious Urakomi material 11 between the cylindrical body 3 and the existing straight walls 1, also existing straight walls 1 a supporting foundation 10 lined with gravel outside the ground is provided, the upper load and vibration by placing the outer periphery of the lower projecting portion 2a of the inclined wall block 2 on the same supporting foundation 10 is a load on the supporting foundation 10, also existing water-swellable rubber 12 to HazamaSo between the bottom surface of the upper end and the inclined wall block 2 straight wall 1, lid support ring 4 above the outer periphery of the inclined wall block 2, manhole cover 5, subgrade material, paving layer , we will rebuild the soil.BACKGROUND 1