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Soft foundation composite ground base construction method for field pouring pipe pile with large diameter

A technology of composite foundation and construction method, which is applied in basic structure engineering, sheet pile wall, construction, etc., can solve the problems of difficult control of construction quality of cement-soil mixing pile composite foundation, high cost of foundation reinforcement, limited reinforcement depth, etc. The effect of quality control, high bearing capacity and low cost

Inactive Publication Date: 2004-07-21
HOHAI UNIV
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Problems solved by technology

[0003] The pile composite foundation method of gravel and other granular materials is low in cost, but the strength of the pile body is low; the construction quality of the cement-soil mixed pile composite foundation is difficult to control, the inspection cost is high, and the reinforcement depth is limited; the rigid precast concrete pile is fast in construction and has a large treatment concentration , suitable for various geological conditions, but prefabricated concrete piles need to be prefabricated in the factory and equipped with steel bars for transportation and on-site installation, which makes the cost of foundation reinforcement expensive

Method used

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  • Soft foundation composite ground base construction method for field pouring pipe pile with large diameter
  • Soft foundation composite ground base construction method for field pouring pipe pile with large diameter
  • Soft foundation composite ground base construction method for field pouring pipe pile with large diameter

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Embodiment Construction

[0019] like figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 The casing molded large-diameter cast-in-place pipe pile machine shown is arranged on the foundation (soft soil foundation) 12 to be piled. The vibrating head 3 is connected below, and the feeding hopper 7 is arranged outside the upper part of the cavity structure 4 of the inner and outer casings. The feeding hopper 7 is connected to the concrete splitter 8, and the concrete splitter 8 corresponds to the upper part of the cavity structure 4 of the inner and outer casings. The lower part of the vibration head 3 is fixedly connected to the upper end of the inner and outer casing cavity structure 4. The inner and outer casing cavity structure 4 is made of steel material with considerable hardness and strength. Molding lubricates to form the pulper 6, forming inner and outer rings, and the valve spud shoe structure 5 is connected on the outer tube at the bottom of the inner and outer tube cavity structure 4. ...

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Abstract

A method for constructing cast-in-place pipe pile composite ground base on the soft ground is characterized by that a hollow structure with internal and external casing pipes is adopted and draven into the ground base, and a specially-designed casing pipe forming large-diameter in-situ pipe pile casting machine is used, then the concrete is placed in-situ so as to obtain the large-diameter cast-in-place pipe pile, and on its top portion, a sandstone layer and geotechnical grille and laid. This invention is a thin-wall pipe pile, belonging to the rigid pile, and its trength is high.

Description

technical field [0001] The invention relates to a construction method for cast-in-place pipe pile composite foundation on soft soil foundation. Background technique [0002] Before the present invention was made, in the construction process of high-grade highways, municipal and industrial and civil buildings, the soft soil foundation must be reinforced to increase the stability of the foundation and reduce settlement, so that the above-mentioned buildings can ensure quality and be used safely. At present, the composite foundation technology that exerts the combined effect of pile and soil is widely used, such as pile composite foundation of granular materials such as gravel, cement soil mixing pile composite foundation, rigid precast concrete pile composite foundation and other methods. [0003] The pile composite foundation method of gravel and other granular materials is low in cost, but the strength of the pile body is low; the construction quality of the cement-soil mixe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/38E02D27/01
Inventor 刘汉龙马晓辉宫能和费康郝小员
Owner HOHAI UNIV
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