Water proof method for underground structure top board expansion joint also serving as urban roads base and the structure

Abstract

The invention discloses a dilatation joint waterproof method for an underground structure roof which is used as an urban roadbase as well, wherein, a dilatation joint space is arranged between a first roof and a second roof of an underground structure. The method comprises the following steps that: firstly, a grouting pipe and a steel-edged rubber watertight strip are respectively arranged inside the first roof and the second roof; secondly, a drain tank is arranged under the rubber watertight strip; thirdly, a 'U'-shaped waterproof roll is arranged inside the dilatation joint space, and rubber strips and water absorption materials are filled into the 'U'-shaped waterproof roll; a stainless steel pressure plate is also arranged on the 'U'-shaped waterproof roll; fourthly, an elastic concrete layer is laid on the 'U'-shaped waterproof roll, and 'W'-shaped rubber watertight strips are glued in gaps of the elastic concrete layer. The invention also provides a dilatation joint waterproof structure. The dilatation joint waterproof method and the dilatation joint waterproof structure guarantee the waterproof effect in multi-angle and multi-layer form and greatly reduce the late maintenance cost.

Description

technical field [0001] The invention relates to the technical field of urban construction, in particular to a method and structure for waterproofing expansion joints of an underground structure roof double as an urban road base. Background technique [0002] With the continuous deepening of urban construction, in order to make full use of urban space and effectively expand its use functions, the integrated development of underground space and ground space is becoming more and more important. Using the roof of the underground structure within the scope of municipal land as the base of urban roads will undoubtedly become one of the important forms of intensive urban space development. [0003] The roof of the underground structure, which doubles as an urban road, will not only directly bear the dynamic load of running vehicles, but also directly face the repeated effects of sun exposure, wind and rain, and freezing and thawing of ice and snow. If effective roof waterproofing ...

AI Technical Summary

Problems solved by technology

If effective roof waterproofing measures are not taken, water on the pavement will pass through the gradually expanding cracks in the roof structure in the process of alternating temperature "rising-falling", interface "wet-drying", and cracks "opening-shrinking" , Gradually corrode the steel bars of the roof structure, affecting the durability of the structure

What's more serious is that in the period of heavy rain or flood, once the accumulated water on the road leaks downward through the roof, it will bring unimaginable harm to the normal use of the structure under the roof.

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