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

A technology for underground structures and road bases, applied in underwater structures, infrastructure engineering, water conservancy projects, etc., can solve the problems of normal use hazards, wet-drying, and impact on structural durability of structures under the roof, to control risks, The effect of reducing maintenance and wide application prospects

Active Publication Date: 2008-11-19
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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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 ste

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

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Embodiment Construction

[0019] As shown in Fig. 1, the expansion joint waterproof structure of the present invention is mainly used in the roof of an underground structure that doubles as an urban road. There is an expansion joint space 13 between the first roof 11 and the second roof 12 of the underground structure. The first top board 11 and the second top board 12 are steel fiber structures, which are treated with epoxy base treatment agent for anticorrosion. In order to maintain the strength, a shearing steel bar 6 for strengthening is provided between the first top plate 11 and the second top plate 12 .

[0020] A "U"-shaped waterproof membrane 2 is provided in the expansion joint space 13, and the expansion joint space 13 below the "U"-shaped waterproof membrane 2 is filled with low-foaming PVC board; in this embodiment, the "U"-shaped waterproof membrane 2. Use 4.5cm-thick modified asphalt for partial tire foundation road and bridge, and reserve a certain free elongation space to adapt to the...

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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 ...

Claims

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Application Information

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IPC IPC(8): E04B1/68E02D29/16
Inventor 徐正良张中杰吕培林彭基敏
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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