Construction method of subsurface excavation and layer added by using top layer of existed basement as native cover board

A technology of basement roof and construction method, applied in underground chambers, water conservancy projects, artificial islands, etc., can solve problems such as restricting the widespread use of urban central areas and affecting the relocation of ground traffic pipelines.

Active Publication Date: 2007-11-14
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Although this method is relatively safe and reliable, it will affect the ground traffic and involve the relocation of pipelines during construction, which restricts its widespread use in urban central areas

Method used

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  • Construction method of subsurface excavation and layer added by using top layer of existed basement as native cover board
  • Construction method of subsurface excavation and layer added by using top layer of existed basement as native cover board
  • Construction method of subsurface excavation and layer added by using top layer of existed basement as native cover board

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Embodiment Construction

[0014] Take the underground shopping mall on the west side of Shanghai Metro Line 1 as an example below to describe the method of the present invention in detail.

[0015] As shown in Figure 1, the structure is an underground shopping mall structure with only one floor. The shopping mall structure includes a top plate 1 and a bottom plate 2, and a plurality of local columns 3 are supported between the top plate 1 and the bottom plate 2; in addition, between the top plate and the bottom plate An inner lining 4 is also provided on the end side, and reinforced concrete sheet piles 5 are respectively arranged on the outer side of the inner lining 4 as the enclosure structure of the underground structure. Generally, in order to ensure that the underground structure is not squeezed by the outer soil layer, the length of the sheet pile is often twice the vertical height of the underground structure.

[0016] It should be noted that since the existing basement area is often large, the...

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Abstract

The invention provides a kind of underground digging and adding floor construction method. It makes use of the underground space as construction field, and makes the roof of present structure as natural cover board, so it divides the whole underground structure into several building sections to underground dig step by step and complete the floor addition of the underground structure. It don't need to dig widely, won't affect the normal ground traffic, and don't need to move pipelines. The project is small and can save investment. It's especially adopted to building underground to add floor in the center of the city. It's suitable for underground digging to rebuild the one floor cellar into two floor underground structure.

Description

technical field [0001] The invention relates to an urban underground construction method, in particular to a construction method for underground excavation and layer addition using an existing basement roof as a natural cover. Background technique [0002] Rational development and utilization of urban underground space resources is to meet the needs of urban modernization and urban sustainable development. Due to the lack of scientific planning and overall arrangements, some built underground spaces cannot be fully utilized, resulting in a waste of underground resources and need to be remodeled. [0003] In the reconstruction of expanding underground space, adding floors downward has become an important idea. The traditional method is to re-construct the enclosure structure that meets the excavation requirements of the second underground floor, and then open and cut to add floors. [0004] Referring to Figure 1, the figure shows a current structure of the existing basement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D13/02E02D29/045
Inventor 徐正良崔勤张中杰王卓瑛
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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