Liquid division slip casting reinforcing method for subsurface structure construction joints

A technology for underground structures and construction methods, which is applied to underwater structures, infrastructure engineering, artificial islands, etc., can solve problems affecting the normal use of underground structures and related facilities, decrease in the rigidity of retaining walls, and poor integrity, and achieve improved attention. Slurry effect, strength improvement, and short gel time

Inactive Publication Date: 2011-04-06
SOUTHEAST UNIV +1
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  • Abstract
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  • Claims
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Problems solved by technology

Due to the existence of unavoidable deviations in the construction process, such as the verticality of the groove of the underground structure, the deviation of the steel cage hanging, and the incomplete brushing of the wall, etc., improper handling of the joints of the construction joints of the underground structure will lead to a decrease in the stiffness of the retaining wall, and the overall Poor performance, leakage and other phenomena occur, seriously affecting the normal use of underground structures and related facilities

Method used

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  • Liquid division slip casting reinforcing method for subsurface structure construction joints
  • Liquid division slip casting reinforcing method for subsurface structure construction joints
  • Liquid division slip casting reinforcing method for subsurface structure construction joints

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Embodiment Construction

[0018] The post-grouting reinforcement construction technique method of underground structure construction joint of the present invention mainly comprises the following steps:

[0019] (1) During the construction of underground structures, special grouting pipes are installed at the construction joints at the ends of adjacent structural sections: the special grouting pipes are fixed at the end of the reinforcement cage and lowered together with the reinforcement cage.

[0020] (2) The special grouting pipe includes a feed inlet and a closed end. Multiple grouting holes are set on the outer periphery of the grouting pipe wall, and the rubber film is used to lock the outside of the grouting pipe;

[0021] (3) Separation grouting;

[0022] When the concrete poured in the underground structure reaches more than 70% of the design strength, use a high-pressure pump to pass through the special grouting pipe, and first inject the grout configured according to the design into the grout...

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Abstract

The invention discloses a liquid division slip casting reinforcing method for subsurface structure construction joints, mainly aiming at the problems that as the subsurface structure construction is severely influenced by ground water, the peripheral structure leaks water, the material strength is reduced, the structure integrity is poor and the like. A purpose-made grouting pipe is arranged at the construction joint of a structure connector with weak stress in the process of subsurface structure peripheral construction, and the liquid division slip casting reinforcing operation is performed based on a designated method, thus making up for the defects of poor rigidity and poor waterproof effect at the construction joint of the subsurface structure preferably. The method in the invention has good grouting effect and high grouting success rate, can effectively improve the strength and the integrality of the subsurface structure, and reduce the leakage of the construction joint of the subsurface structure.

Description

technical field [0001] The invention belongs to the grouting reinforcement technology for construction joints of underground structures. It is suitable for the peripheral construction of large-scale underground structure projects in soft soil areas with shallow buried water table and deep underground structures, especially in silty silt soil geological conditions. Background technique [0002] The peripheral construction joints of the underground structure are the joints that longitudinally connect two adjacent sections of the enclosure structure. Due to the division of structure and construction, they are often the parts with relatively weak force. However, the function of use should meet the requirements of force and anti-seepage (to ensure the impermeability and integrity of the wall), and strive for simple construction, so as not to cause difficulties in the construction of other peripheral structures. There are many ways to connect construction joints in the periphery ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/02E02D29/16
Inventor 刘松玉侯新宇方磊童立元
Owner SOUTHEAST UNIV
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