Construction method for connecting subway station and long-span accessory structure

A technology for auxiliary structures and subway stations, applied in infrastructure engineering, underwater structures, artificial islands, etc., can solve problems such as quality, safety hazards, slow construction period, and narrow construction space, so as to shorten the construction period, improve construction efficiency, The effect of expanding the construction space

Active Publication Date: 2014-10-15
WUHAN HANYANG MUNICIPAL CONSTR GRP CO LTD
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Problems solved by technology

Therefore, when the retaining piles of the main structure are broken, the construction space is narrow, which makes it difficult to clear and transport the concrete blocks, a

Method used

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  • Construction method for connecting subway station and long-span accessory structure
  • Construction method for connecting subway station and long-span accessory structure
  • Construction method for connecting subway station and long-span accessory structure

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0035] An embodiment of the present invention provides a construction method for an interface between a subway station and a large-span auxiliary structure, comprising the following steps:

[0036] Step S1. See Figure 5 As shown, construct the auxiliary structure enclosure pile 4 and the crown beam 6, then excavate the earth to the bottom of the crown beam 6, mark the erection pile position of the steel support 5 according to the position where the steel support 5 needs to be erected in the foundation pit, and erect the pile according to the steel support 5 The distance between the pile positions, mark the main structure enclosure pile 3 that needs to be removed for the first time. Cut off the reinforced concrete at the junction of the main structure enclosure pile 3 and the crown beam 6 .

[0037] Step S2. See Figure 6 and 7 As shown, w...

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Abstract

The invention discloses a construction method for connecting a subway station and a long-span accessory structure and relates to the technical field of engineering construction. The construction method includes steps of building an accessory structure retaining pile and a top beam, and excavating earth till the bottom of the top beam; according to a position requiring steel support in a foundation pit, marking a steel support erection pile position and a main structure retaining pile which needs to be broken down firstly; cutting reinforcing concrete on a connection portion between the main structure retaining pile and the top beam; erecting the steel support when the earth of the foundation pit is excavated till marked height of the steel support, and then excavating till the bottom of the foundation pit; breaking down the marked main structure retaining pile which needs to be broken down firstly, and building a base plate of the accessory structure and a first base plate post-cast strip; and after the base plate and the first base plate post-cast strip are finished, and strength of the base plate meets detaching requirement of the steel support, detaching the steel support, breaking down the rest main structure retaining piles, then building a second base-plate post-cast strip to be connected with the main structure, and sequentially building the rest structures from the bottom up.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a construction method for the interface between a subway station and a large-span auxiliary structure. Background technique [0002] At present, in the construction of deep foundation pit engineering of large-span auxiliary structures of subway stations, especially when the surrounding environment is complex, in order to ensure the quality of the project and the safety of construction, the space between the main structure enclosure piles and the attachment structure enclosure piles is usually increased during design. steel support, the construction steps are: [0003] 1. See figure 1 As shown, the auxiliary structure enclosing pile 4 and the crown beam 6 are executed, and then the earthwork is excavated to the bottom of the crown beam 6. [0004] 2. See figure 2 As shown, when the foundation pit earthwork is excavated to the erection elevation of the steel su...

Claims

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Application Information

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IPC IPC(8): E02D29/045
Inventor 魏伟胡红胜李震修王智高陈利郑佳
Owner WUHAN HANYANG MUNICIPAL CONSTR GRP CO LTD
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