An anchor static pressure pile device with self-sufficient pressure pile reaction force and its construction method

Abstract

The invention relates to an anchor-arm static-pressure pile device with self-sufficient pile pressing counter-force and a constructing method of the anchor-arm static-pressure pile device, and aims to provide the anchor-arm static-pressure pile device with the self-sufficient pile pressing counter-force. When an indoor construction pile foundation cannot provide a pile pressing counter-force, construction requirements can be realized by self-sufficient pile pressing counter-force, so that the efficiency is high, the cost is relatively lower, and pollution to the environment is avoided. The anchor-arm static-pressure pile device adopting steel pipe piles of which the pile tips are filled with slurry to provide counter-force comprises a pressure pile baseplate, the steel pipe piles and anchors, wherein anchor-arm static-pressure pile pressing holes and steel pipe pile pressing holes are formed in the pressure pile baseplate; the steel pipe piles are inserted through the steel pipe pile pressing holes and pressed to a certain depth; the slurry is arranged in the pile tips of the steel pipe piles; the tops of the steel pipe piles are connected with the press pile baseplate through grouting material tamping; the anchors are arranged outside the steel pipe pile pressing holes and the anchor-arm static-pressure pile pressing holes respectively, connected with a press pile counter-force rack and used for pressing the steel pipe piles or anchor-arm static-pressure piles to certain depths.

Description

technical field [0001] The invention relates to an anchor static pressure pile, in particular to an anchor static pressure pile device with self-supplied pressure pile reaction force and a construction method thereof. Background technique [0002] Anchor static pressure pile technology is a commonly used construction technology for reinforcing existing buildings or structures. By using the self-weight of the building or structure as the pile-pressing reaction force, the anchor pile is pressed into the foundation soil in sections by using the pile-pressing reaction device. Existing anchor rod static pressure pile device has following weak point: [0003] 1. The reaction force of pile pressing comes from the weight of the building itself. On the one hand, the weight of the building is required to be large enough. On the other hand, the concentrated reaction force during the pile pressing process requires a higher overall rigidity of the building. Therefore, the anchor static...

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Problems solved by technology

Therefore, the anchor static pressure pile is limited by the nature of the building: under the condition of small weight or poor stiffness of the building, the existing anchor static pressure pile does not have the construction conditions

[0004] 2. The pile construction will cause relatively large dragging settlement. When the building is sensitive to settlement and differential settlement, the existing anchor static pressure pile device will cause certain damage to the building

The number of counterweights inside the building is limited, and the handling is also difficult; while the cost of tree root piles is high, the uplift bearing capacity of single piles is low, and it will also cause environmental pollution

[0006] Based on the above deficiencies, the existing anchor static pressure pile device and construction technology are difficult to operate, poor in feasibility, low in efficiency, high in cost and have a relatively low impact on the environment for the situation that the building cannot provide the pile pressure reaction force. Big

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