Method for combined supporting of anchor rod (cable) of foundation pit pile
A technology of pile anchor and foundation pit, which is applied in sheet pile wall, foundation structure engineering, excavation, etc., can solve the problems of high cost, affecting construction progress, and scrapping of buildings.
Inactive Publication Date: 2009-12-16
罗康
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Problems solved by technology
[0002] In civil engineering construction, artificial slopes are often formed, such as building foundation pits, excavation of roads and railway excavation sections to form slopes, which affect surrounding buildings and structures. Improper support measures will cause deformation and cracking of surrounding buildings and structures etc., in severe cases, it will lead to the scrapping of buildings and structures
Therefore, in order to protect the slope soil of the foundation pit, a number of measures have been implemented in the current civil construction engineering. Among them, the cantilever pile has relatively large reinforcement and cannot adapt to the relatively deep foundation pit support. There are no obstacles such as structures in the supported soil, and the supported soil is required to provide sufficient extreme frictional resistance for the anchor rod (such as soft soil cannot provide), and the inner support is relatively expensive for super large foundation pit support and affects the construction progress , so need to improve
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[0009] The present invention is implemented according to the above-mentioned technical scheme, and the anchor rod [cable] needs to be prestressed. According to the depth of the foundation pit, geological conditions, surrounding environmental conditions, etc., there are foot support piles and support piles, generally 2-3 meter interval, there is a reserved pipe in the pile with foot support, the diameter φ160-200mm is advisable, the reserved pipe is for the anchor rod [cable] to stay, and the anchor rod [cable] quantity when the present invention is implemented is with the foot support Depending on the number of retaining piles and supporting piles. The present invention is also suitable for slope management.
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The invention provides a method for combined supporting of an anchor rod (cable) of a foundation pit pile. The method is as follows: the anchor rod (cable) is arranged against the earth-retaining side in a support pile with legs on the side wall of the foundation pit, the anchor rod (cable) is arranged in the earth-retaining side behind the support pile, and the anchor rod (cable) along the side wall of the foundation pit is connected with a top beam by an anchor device, wherein the anchoring section of the anchor rod (cable) is driven into a rock layer with relatively higher shearing strength so as to realize combined supporting of the anchor rod (cable). The method can completely meet the supporting requirement of the side slopes of the foundation pit, is safe and reliable, saves great capital for project cost, and shortens the construction period.
Description
technical field [0001] The invention belongs to a foundation pit pile anchor rod [cable] combined support method in construction foundation pit or side slope treatment. Background technique [0002] In civil engineering construction, artificial slopes are often formed, such as building foundation pits, excavated soil in roads and railway excavation sections to form slopes, affecting surrounding buildings and structures, and improper support measures will cause deformation and cracking of surrounding buildings and structures etc., in severe cases, it will lead to the scrapping of buildings and structures. Therefore, in order to protect the slope soil of the foundation pit, a number of measures have been implemented in the current civil construction project. Among them, the cantilever pile has relatively large reinforcement and cannot adapt to the relatively deep foundation pit support. There are no obstacles such as structures in the supported soil, and the supported soil is...
Claims
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IPC IPC(8): E02D17/20E02D17/02E02D5/74
Inventor 罗康
Owner 罗康
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