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Reinforcement method for passing through existing building under shield tunnel

A technology for existing buildings and shield tunnels. It is used in tunnels, earth-moving drilling, mining equipment, 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

Active Publication Date: 2019-06-28
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. Methods of Strengthening Buildings

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  • Reinforcement method for passing through existing building under shield tunnel
  • Reinforcement method for passing through existing building under shield tunnel

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] 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.

[0028] 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 methods, in particular to a reinforcement method for passing through an existing building under a shield tunnel. Reinforcement pilesare added on both sides of the existing building in a transverse direction during construction, an anchor cable is arranged in a soil body between the existing building and the shield tunnel, and after the anchor cable is pulled to achieve design strength, both ends of the anchor cable are fixed to the reinforcement piles; then, slurry is poured into the soil body below the existing building, andthe poured slurry wraps the anchor cable to form a reinforced concrete structure bearing the existing building; after the poured slurry achieves the design strength, reinforcement of the existing building is completed. According to the method, a reinforcement structure is simple, pile foundations and internal structures of the existing building are completely avoided, damage caused to the existing building is avoided, the integrity and safety of the existing building are completely protected, and the method has a high popularization value.

Description

technical field [0001] The invention relates to the technical field of tunnel construction methods, in particular to a reinforcement method for a shield tunnel passing through an existing building. 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 Shenzhen,...

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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