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Waterproof construction method of multi-layer combined type expansion joint of underground structure

A technology of underground structure and construction method, applied in the layout of foundation structure joints or in the field of structure, can solve the problems of temporary solution, high cost of plugging, failure to fundamentally eliminate leakage, etc., achieve wide application range, avoid Leakage repair cost, waterproof quality and obvious effect

Inactive Publication Date: 2018-11-02
CHINA MCC20 GRP CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, with the construction and use of a large number of underground structures in China, the phenomenon of structural leakage is increasing day by day, and there are more and more technical means for structural leakage plugging. leaks are costly

Method used

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  • Waterproof construction method of multi-layer combined type expansion joint of underground structure
  • Waterproof construction method of multi-layer combined type expansion joint of underground structure

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Embodiment 1

[0033] A multi-layer combined expansion joint waterproof construction method for underground structures, such as figure 1 and figure 2 As shown, implement in sequence as follows:

[0034] a. Excavate the blind ditch layer: if figure 1 As shown: the underground structure 11 is excavated to the foundation trench surface 12, and a blind ditch layer 21 with a depth of not less than 30 cm is excavated on the foundation trench surface 12, and a blind ditch 22 is buried in the blind ditch layer 21 as a drainage ditch, and the blind ditch 22 Including at least one horizontal blind ditch 22 and at least one longitudinal blind ditch 22, the horizontal blind ditch 22 is parallel to each other, the longitudinal blind ditch 22 is parallel to each other, and the horizontal blind ditch 22 and the longitudinal blind ditch 22 are connected to each other , at least one blind ditch 22 flows into the water inlet of the water pump house 13; there is no special requirement for the setting form o...

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Abstract

The invention relates to the field of the arrangement or structure of base structure joints, in particular to a waterproof construction method of a multi-layer combined type expansion joint of an underground structure. The waterproof construction method of the multi-layer combined type expansion joint of the underground structure comprises that excavation of the underground structure (11) to a foundation groove surface (12) is performed; the construction method is characterized by comprising the following steps that a, a blind ditch layer is excavated; b, a plain concrete cushion layer is poured; c, a first layer waterproof roll is laid; d, a telescopic copper plate is arranged; e, a first waterstop is arranged; f, a steel shear pin is arranged; g, a second waterstop is arranged; h, a foamboard is laid; i, concrete is poured; j, a second layer waterproof roll is laid; and k, a concrete leveling layer is paved. The waterproof construction method of the multi-layer combined type expansion joint of the underground structure is simple in construction, high in waterproof quality and convenient for later maintenance, cost input can be controlled, and application range is wide.

Description

technical field [0001] The invention relates to the field of layout or structure of joints in basic structures, in particular to a waterproof construction method for multi-layer combined expansion joints in underground structures. Background technique [0002] At present, China is in a period of rapid urbanization development. Underground structural engineering is becoming increasingly large-scale and complex. Urban land resources are becoming increasingly tense. The development and utilization of underground space has become a mainstream trend. However, in the construction process of underground structures, how to ensure the waterproof quality of the structure is a major problem that plagues the construction. Affected by changes in geological conditions, cumulative settlement of the foundation, and changes in the groundwater level, water seepage and water leakage will occur within a period of time after the underground structure is built and used, especially at the location...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/16
CPCE02D29/16
Inventor 黄骥王友涛王立军薛铖李佰西尹旭文
Owner CHINA MCC20 GRP CORP
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