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Reinforcing structure for shield tunnel underneath penetrating existing building

A technology for existing buildings and shield tunnels. It is used in tunnels, mining equipment, earth-moving drilling, etc. It can solve the problems of large damage to existing buildings and difficult to promote, achieve a wide range of applications, improve efficiency and safety. , to ensure the effect of security issues

Pending Publication Date: 2019-05-21
中交(广州)建设有限公司
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing building reinforcement method of the shield tunnel passing under the existing technology mentioned in the above background technology has the problem of large damage to existing buildings and is difficult to popularize, and provides a shield tunnel passing under the existing building. reinforced structure of buildings

Method used

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  • Reinforcing structure for shield tunnel underneath penetrating existing building
  • Reinforcing structure for shield tunnel underneath penetrating existing building

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Such as Figure 1~2 , for the shield tunnel to pass through the existing building 6 for reinforcement treatment. If the soil layer under the existing building 6 is a water-rich sand layer, in order to avoid the subsurface problem caused by excessive precipitation during the construction process, it is necessary to pre-install Water-stop curtains are constructed on both lateral sides of the existing buildings 6. The water-stop curtains of this embodiment are made by inserting sleeve valve pipes in the soil around the 1-meter distance of the existing buildings 6, and then by grouting. The soil is reinforced.

[0029] If the soil below the existing building 6 is not a water-rich soil layer, there is no need to carry out the construction of the water-stop curtain. The reinforcement structure is actually a portal frame structure, ...

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Abstract

The invention relates to the technical field of tunnel construction structures, in particular to a reinforcing structure of a shield tunnel underneath penetrating an existing building. Vertical supporting structures are located on two transverse sides of an existing building, and a transverse supporting structure is located between the existing building and a shield tunnel. Each vertical supporting structure is a pile foundation structure inserted into soil bodies on the two transverse sides of a shield tunnel advancing route. The two transverse ends of the transverse supporting structure arefixed to the vertical supporting structures on the two sides to form a portal structure for supporting an existing building, and a tensioning structure for transversely tensioning the transverse supporting structure is arranged between the vertical supporting structures on the two sides. The reinforcing structure is simple; the pile foundation and the internal structure of an existing building arecompletely avoided; damage to the existing building is avoided; the integrity and safety of the existing building are completely protected; and the reinforcing structure has great popularization value.

Description

technical field [0001] The invention relates to the technical field of tunnel construction structures, in particular to a reinforcement structure for shield tunnels passing through existing buildings. Background technique [0002] With the increasing number of subway construction in our country, it is unavoidable for shield tunnels to pass through existing buildings. When the shield tunnel passes through the existing building, the traditional method is to do sleeve valve grouting around the house to confine the geology under the existing building and increase the bearing capacity of the entire geology. However, due to the increase in the weight of the existing buildings and the poor geology below the existing buildings, the uneven settlement of the existing buildings is too large, resulting in cracks in the walls of the existing buildings to be passed through, making the existing buildings dangerous, especially In the first-tier cities north, Shanghai, Guangzhou, and Shenzh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D20/02
Inventor 李浩杨峰杨浩叶跃平谭啸峰彭勇邓鹏董汉军杨钊喻青儒
Owner 中交(广州)建设有限公司
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