| 摘要 |
Mounting precast concrete structure of manholes resistant to vibration and schock is a technical system whose primary function is the protection of object of manholes from dynamic influences of the type of vibration and schock is a technical system whose primary function is the protection of object of manholes from dynamic influences of the type of vibration and schock, or prevention of the most frequent type of damage of this kind of construction-subsiding, i.e. denivelation of the manhole lid with regard to the plane of the road. Primary use of this construction is for manholes for pipes and drains imbedded in the road construction, that is for other revision windows, i.e. to revision windows for electro, TT and other installations, etc. Scematic image of the manhole object is shown in figure 1. Its constituent parts are: manhole lid with frame (1), overlapping plate (2), segments of the manhole drum (3) and (5), elastic rings for fastening segments of drum (4) and base of manhole (6). The most important comparative advantages, in comparison to other known technical solutions, which came out of the essence of functioning and construction characteristics of mounting concrete manhole resistant to vibration and schock, are * protection of ground from dynamic influences of railroad, that are transferred by way of lid,•protection of subsiding of the ground and manhole ground, or denivelation of manhole lid with regard to railroad level,•prevention of the flow of water from the manhole, and, in such a way, protection of environment from harmful elements of drainpipes, or intrusion of water in manhole,•protection of urban environment from noise, vibrations and schocks caused by contact of vehicle wheels and bumps caused by denivelation of manhole lid or protection of vehicles from schock damage, etc. |
