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Buried micro composite pile group and its anti-sliding design method

A design method and technology of micro piles, applied in excavation, construction, infrastructure engineering and other directions, can solve problems such as ineffectiveness and waste, avoid cost waste, reduce project cost, and ensure the effect of prevention and control.

Active Publication Date: 2016-02-03
中国地质环境监测院
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  • Application Information

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Problems solved by technology

[0004] The inventor finds in the process of realizing the present invention that the part of micro-pile that plays a role in landslide prevention and control is usually within a certain range up and down the sliding belt, while the micro-pile body within a certain range under the ground does not play a large role, which causes a certain amount of waste

Method used

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  • Buried micro composite pile group and its anti-sliding design method
  • Buried micro composite pile group and its anti-sliding design method
  • Buried micro composite pile group and its anti-sliding design method

Examples

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Embodiment 1

[0027] Embodiment 1. Anti-sliding design method of embedded micro-composite pile group. The procedure of this method is as follows figure 1 shown.

[0028] figure 1 Among them, S100, according to the arrangement parameters of the micro-combined pile group, determine the landslide thrusts of the respective loads of the micro-pile located in different rows.

[0029] Specifically, the micro-combined pile group in this embodiment is an embedded micro-combined pile group, that is, the micro-combined pile group is arranged in the landslide by embedding, such as figure 2 As shown, a part of the micropile 4 is embedded and fixed in the sliding bed 3 to form an embedding section, while the other part of the micropile 4 is located in the sliding body 1 above the sliding belt 2 to form a load-bearing section, that is, the present embodiment The micro-pile 4 is composed of an embedding section and a load-bearing section, and there is a certain distance between the pile top of each mic...

Embodiment 2

[0063] Embodiment two, buried type miniature combined pile group.

[0064] The embedded micro-combined pile group of this embodiment is at least composed of two rows and two rows of micro-pile, and each micro-pile is composed of a load-bearing segment and an embedded segment; wherein, the length of the load-bearing segment of each micro-pile should be the above-mentioned Determined by the method described in S100-S150 in Embodiment 1. In addition, in this embodiment, the length of the embedding section of each micro-pile can be determined according to the formula (3) in the first embodiment above, and the cross-section of the longitudinal reinforcement of each micro-pile can be determined according to the formula (1) in the first embodiment above. area. For the determination of the length of the load-bearing section of each micro-pile, the determination of the length of the embedded section of each micro-pile, and the determination of the cross-sectional area of ​​the longitu...

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Abstract

The invention relates to a buried miniature combined pile group and an anti-landslide design method thereof, wherein the anti-landslide design method includes the following steps: according to the arrangement parameters of the miniature combined pile group, landslide thrust which is respectively loaded by each of miniature piles located in different rows is determined; according to the landslide thrust respectively loaded by each miniature pile, the reinforcement sectional area of each of the miniature piles located in the different rows, the lengths of the loaded sections in a landslide mass and the lengths of the fixedly embedded sections in a landslide bed are calculated; according to the length of the loaded section of each miniature pile located in the landside mass, the numerical simulation method is utilized to calculate the stability coefficient of the part of the landslide mass over the top of each miniature pile; under the circumstance that the stability coefficient does not meet predetermined requirement, the lengths of the loaded sections of the miniature piles are increased, and the step of utilizing the numerical simulation method to calculate stability coefficient is repeated until a calculated stability coefficient meets the predetermined requirement. While ensuring the prevention and control effect of a landslide prevention and control project, the technical scheme provided by the invention greatly reduces the construction cost of landslide prevention and control.

Description

technical field [0001] The invention relates to a landslide prevention technology, in particular to an embedded miniature composite pile group and its anti-slide design method. Background technique [0002] Micropiles have been widely used in landslide prevention and control engineering, and in practical applications, micropiles are usually set in landslides in the form of microcomposite pile groups. [0003] The micropile in the existing landslide prevention and control project usually adopts a full-length arrangement, that is, the micropile runs through the slide bed to the surface of the landslide, that is to say, the pile top of the micropile needs to reach the surface of the landslide. [0004] The inventor found in the process of realizing the present invention that the part of the mini-pile that plays a role in landslide prevention and control is usually within a certain range up and down the sliding belt, while the role of the micro-pile body within a certain range u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/20E02D27/16
CPCE02D17/20E02D27/16
Inventor 殷跃平闫金凯李滨王文沛冯振
Owner 中国地质环境监测院
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