Built-in anti-floating anchor blocking structure used in foundation mat for deep-well dewatering well and construction method

A technology for anti-floating anchor rods and foundation bottom plates, which is applied in infrastructure engineering, protection devices, buildings, etc., can solve the problems of inability to repair, long time for sealing and welding, and corrosion of steel threads, so as to improve the anti-floating performance. , Improve waterproof effect, good waterproof effect

CN105178344AActive Publication Date: 2015-12-23CITIC GUOAN CONSTR GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-12-23

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Abstract

The invention relates to a built-in anti-floating anchor blocking structure used in a foundation mat for a deep-well dewatering well. A steel sleeve is arranged on a rainfall wellhead. The bottom of a rainfall well forms a body expansion soil end through expansion holes. A bag type anti-floating anchor rod is arranged in the well. An expansion end plate is arranged in an anchor rod bag. Annular positioning rebars are arranged on the bag type anti-floating anchor rod. The anchor rod bag forms a grouting body expansion anti-floating end through high-pressure pouring after being inserted into the body expansion soil. The upper end of the anchor rod is anchored after penetrating a blocking steel plate. Connection rebars are connected to the top face of the blocking steel plate in a welding manner. The bottom face of the blocking steel plate is provided with a waterproof rubber gasket. The blocking steel plate is connected with a steel sleeve connection steel plate through bolts. The top face of the blocking steel plate sequentially comprises a waterproof concrete layer and a post-poured concrete sealing body. According to the deep-well dewatering well built-in anti-floating anchor blocking structure, by means of the built-in anti-floating anchor rod manner, the wellhead blocking quality can be guaranteed while the situation that the rainwater wellhead is destroyed due to the fact that underground water comes up to the top during the later period is reduced, and the built-in anti-floating anchor blocking structure has better economic and technical benefits.
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Description

technical field

[0001] The invention relates to a built-in anti-floating bolt plugging structure and construction method of a deep well dewatering well on a foundation floor. The utility model belongs to the field of foundation treatment and is suitable for the plugging and treatment project of the dewatering well of the building foundation. Background technique

[0002] With the limitation of above-ground development space in cities, the utilization rate of underground space is increasing year by year and deepening. Therefore, deep foundation pits will be excavated during a large number of building constructions. In the construction of deep foundation pits, it is often encountered that dewatering wells are set in the basement of the permanent structure floor. situation. In most cases, in order to meet the requirements of the construction site, the dewatering well needs to be sealed after the construction of the bottom plate is completed. Therefore, it is inevitable for the...

Examples

Embodiment Construction

[0034] In this embodiment, the technical requirements for the construction of the base plate and the cushion, the technical requirements for welding construction, the ratio of the high-pressure grouting of the bladder, etc. will not be described in detail, and the construction of the anti-floating anchor plugging structure built in the deep well dewatering well involved in the present invention will be focused on implementation.

[0035] figure 1 It is a schematic diagram of the plugging structure of the built-in anti-floating anchor rod in the deep well dewatering well of the foundation floor of the present invention, figure 2 It is a schematic diagram of the connection between the steel casing and the plugging steel plate in the present invention, image 3 It is a schematic diagram of the connection between the capsule bag and the rod body in the capsule type anti-floating anchor rod of the present invention. refer to figure 1 The deep well dewatering well shown has a bu...