Municipal road heavy manhole cover walling crib reinforcement structure and construction method thereof

Abstract

The invention discloses a municipal road heavy manhole cover walling crib reinforcement structure. The structure comprises a precast walling crib, a foam board and a shaft which are arranged in sequence from top to bottom, a precast walling crib base is circumferentially arranged on the outer side of the bottom end surface of the precast walling crib, the foamed board is arranged between the precast walling crib and the shaft, and concrete is poured between the precast walling crib base and a road structural layer; a manhole cover is arranged on the top of the precast walling crib through a support frame. According to the reinforcement structure, the precast walling crib with the base is used for cooperating with the low-density polyethylene closed-cell foam board to form a semi-grid structure achieving rigid-flexible combination, the strength of the base course around the walling crib is improved, the vehicle dynamic load stressed area is increased, and a circum-well road base load isdispersed; by means of the semi-grid structure achieving rigid-flexible combination, the quality problems such as circum-well road surface cracking, damage and manhole cover sinking are reduced, theroad surface roughness is guaranteed, the driving comfortability and safety are greatly improved, and meanwhile the road maintenance and care cost is lowered.

Description

technical field [0001] The invention relates to the technical field of municipal road engineering construction, in particular to a municipal road heavy-duty manhole cover well ring reinforcement structure and a construction method thereof. Background technique [0002] At present, most urban roads in my country use lime-stabilized soil, lime-fly ash stabilized soil, lime-fly ash-stabilized gravel and cement-stabilized gravel as the base structure, and asphalt concrete as the road surface structure, which belongs to the semi-rigid plate bearing structure. design. The inspection well in the road is based on reinforced concrete, and the well body is made of concrete blocks or brick masonry. The surrounding of the well is backfilled with 2:8 lime soil or graded sand and gravel. The well neck is prefabricated with reinforced concrete or built with blocks (bricks). The cast iron well ring (cover) is wrapped with 30-50cm wide and 25cm thick C30 concrete, and a 4cm thickness is rese...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of reinforcement structure of heavy-duty manhole cover well ring for municipal roads, which effectively solves the problems around the manhole cover (10~1000 ~ 35cm) road surface cracking, damage and manhole cover sinking and other quality problems, to ensure the smoothness of the municipal road surface, so that the driving comfort and safety have been greatly improved, while reducing road maintenance and maintenance costs

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