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Pile tip soil reinforcement system

A soil reinforcement and pile end technology, applied in soil protection, construction, geothermal power generation, etc., can solve problems such as insufficient bearing capacity, improve the consolidation coefficient, improve mechanical properties, and improve the bearing capacity of pile ends and lateral friction. The effect of resistance

Active Publication Date: 2020-09-22
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of insufficient bearing capacity of prefabricated piles in existing deep soft soil foundations, the present invention provides a pile tip soil reinforcement system

Method used

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  • Pile tip soil reinforcement system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The pile end soil reinforcement system of embodiment 1, such as figure 1 As shown, it includes a vacuum pump 1 and a plurality of reinforcement units, each reinforcement unit includes an upright prefabricated pipe pile 2, a pile head 3, a drainage unit, a heating unit 51 and a temperature control unit 52, and the pile head 3 is fixed Connected to the bottom of the prefabricated pipe pile 2, each drainage unit includes a pipeline 41 and three drainage boards 42, the three drainage boards 42 are arranged on the pile head 3, one end of the pipeline 41 is connected with the vacuum pump 1, and the vacuum pump 1 A vacuum gauge 11 and a valve 12 are installed on the connecting pipeline with the pipeline 41. The other end of the pipeline 41 passes through the inner cavity of the prefabricated pipe pile 2 and communicates with three drainage boards 42. The heating unit 51 is arranged on the outside of the pile head 3 , the temperature of the heating unit 51 is controlled by a temp...

Embodiment 2

[0030] The pile tip soil reinforcement system of embodiment 2 differs from embodiment 1 in that in embodiment 2, such as Figure 6 As shown, each drainage board 42 includes a core board 44 and a filter membrane 45 coated on the periphery of the core board 44. In this embodiment, the core board 44 is cut from a plastic drainage board in the prior art, and the filter membrane 45 is a long fiber The hot-rolled non-woven filter membrane 45 is communicated with the cavity surrounded by the filter membrane 45 by the diversion hose 43 .

[0031] When the pile tip soil reinforcement system of Examples 1 and 2 is applied to the reinforcement of the prefabricated pile foundation of the deep soft soil foundation 6, before the construction of the pile foundation, first disconnect the connection between the pipeline 41 and the vacuum pump 1 and the resistance heating ring 55 and the temperature control unit. The connection of unit 52, during construction, press each prefabricated pipe pile...

Embodiment 3

[0033] The difference between the pile end soil reinforcement system of Embodiment 3 and Embodiment 2 is that in Embodiment 3, the prefabricated pipe pile 2 is replaced by a bamboo pile.

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Abstract

The invention discloses a pile tip soil reinforcement system comprising a vacuum pump and a plurality of reinforcing units. Each reinforcing unit comprises an upright precast tubular pile, a pile head, a drainage unit, a heating unit and a temperature control unit; each pile head is fixedly connected to the bottom end of the precast tubular pile; each drainage unit comprises a pipeline and a plurality of drainage plates; the plurality of drainage plates are arranged on the pile heads; one end of each pipeline is connected with the vacuum pump; the other end of the pipeline penetrates through an inner cavity of the precast tubular pile to communicate with the plurality of drainage plates; and the heating units are arranged on the outer side of the pile heads, the temperature of the heatingunits is controlled by the temperature control units, the plurality of temperature control units in the plurality of reinforcing units are powered by a distribution box arranged on the ground surface,and a power switch is arranged on the distribution box. The reinforcement system can carry out vacuum preloading consolidation and heating on the pile tip soil simultaneously or respectively, the bearing capacity of the pile tip soil layers is rapidly improved, the anti-deformability of pile foundations is enhanced, and the pile tip soil reinforcement system is particularly applicable to the reinforcement of the precast pile foundations of deep soft soil foundations with the degree of depth more than 15-35m.

Description

technical field [0001] The invention relates to the technical field of pile foundations, in particular to a pile end soil reinforcement system. Background technique [0002] Deep soft soil foundations are widely distributed in the southeastern coastal areas and inland lake areas of my country. The settlement control of buildings (structures) on soft ground has always been a major challenge in the engineering field. As a foundation form with a long history, high bearing capacity and wide application range, pile foundation is widely used in various fields of civil engineering. The commonly used pile foundations in my country can be divided into two categories, namely prefabricated piles and bored piles. The prefabricated piles adopt industrial production, and the degree of construction mechanization is high, which meets the requirements of the industrialization of prefabricated buildings vigorously advocated by the state. For this reason, the application proportion of prefa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/10E02D3/11
CPCE02D3/10E02D3/11Y02E10/10
Inventor 邓岳保毛伟赟徐超蔡章正俞磊郑良科戴文琰
Owner NINGBO UNIV
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