Construction method for quick joint of prestressed concrete tubular pile and special bending test device

A technology of concrete pipe piles and construction methods, which is applied to foundation structure tests, sheet pile walls, foundation structure engineering, etc., and can solve problems such as quality being affected by human factors, weak pile welding, and partial welds are not full, etc. Achieve the effects of shortening the connection time, easy quality assurance, and short pile connection time

Inactive Publication Date: 2013-03-13
ZHEJIANG HAITIAN CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Welding of prestressed concrete pipe piles generally has the following defects: the process is time-consuming and inefficient; the piles are prone to common quality problems such as weak welding, partial welds are not full, and high-temperature welds are brittle when exposed to water. Influenced by various factors, it requires high skills for welders; construction is affected by weather and environment, and it is not suitable for construction in winter, rainy periods, groundwater, and foundation soil that have moderate corrosion o

Method used

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  • Construction method for quick joint of prestressed concrete tubular pile and special bending test device
  • Construction method for quick joint of prestressed concrete tubular pile and special bending test device
  • Construction method for quick joint of prestressed concrete tubular pile and special bending test device

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Experimental program
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Example Embodiment

[0046] Example 1

[0047] The construction method, construction process and operation points of the prestressed concrete pipe pile quick joint are as follows:

[0048] 1.1 Pipe pile mechanical quick joint construction process: see the pipe pile mechanical quick joint construction process figure 1 .

[0049] 1.2 Operating points

[0050] 1.2.1 Machining process of mechanical quick coupling parts

[0051] 1) The structure of the mechanical joint: The mechanical joint is welded on the embedded steel plate of each joint of the pipe pile end, and several connecting grooves for connecting the pile are welded equally. The steel pin plate and the pressure spring are embedded. The structure of the mechanical joint is shown in Figure 2-5 .

[0052] 2) The production process of mechanical quick coupling parts:

[0053] ① According to the selected prestressed pipe pile type and pile diameter, the mechanical quick joint components are designed and processed. The design principle of mechanical quick ...

Example Embodiment

[0172] Example 2

[0173] A prestressed concrete pipe pile quick joint construction method: use a special mechanical joint for pipe pile connection, and use a special construction method for prestressed concrete pipe pile joint construction during the connection process; among them:

[0174] The special mechanical joint is composed as follows: the lower section pile body 1, the upper section pile body 2, the steel pin plate 3, the connecting groove 4, the connecting pin 6; among which: the lower section pile body 1 and the upper section pile body 2 are mutually axially They are arranged in a parallel or overlapping manner. The lower section 1 and the upper section 2 are respectively provided with at least 3 axially blind hole-shaped and interconnected connecting grooves 4 arranged along the circumference; the upper and lower parts of the connecting pin 6 They are respectively located in the upper connecting groove 4 of the upper section pile body 2 and the lower section pile body 1...

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Abstract

The invention discloses a construction method for a quick joint of a prestressed concrete tubular pile. A special mechanical joint is used for the connection of a tubular pile, and consists of a lower-section pile body (1), an upper-section pile body (2), a steel pin plate (3), a connecting trough (4) and a connecting pin (6). The construction method comprises the following steps of: firstly pressing in the lower-section pile body (1) for construction; then arranging the connecting pin (6) and an attached structure at the connecting trough (4) of the lower-section pile body (1); and finally lifting the upper-section pile body (2) for joint connection construction. A bending test device special for the construction method for the quick joint of the prestressed concrete tubular pile comprises two sections of connected entire prestressed concrete tubular piles, a support die (14), a distribution beam (15), a U-shaped cushion block (18) and the like. Pressure can be reliably transmitted, and bending moment, shear force and tensile force can be born. The method can be adapted to various construction environmental conditions, and has better economic benefits and social benefits, and energy saving and environmental protection requirements are met.

Description

technical field [0001] The invention relates to the technical field of design and application of prestressed concrete pipe pile connection structures for buildings, and in particular provides a construction method for quick joints of prestressed concrete pipe piles. Background technique [0002] Welding of prestressed concrete pipe piles generally has the following defects: the process is time-consuming and inefficient; the piles are prone to common quality problems such as weak welding, partial welds are not full, and high-temperature welds are brittle when exposed to water. Influenced by various factors, it requires high welder skills; construction is affected by weather and environment, and it is not suitable for construction in winter, rainy seasons, and in environments where groundwater and foundation soil have moderate corrosion on pile concrete and steel bars. [0003] In engineering practice, in winter, rainy construction, or bad geological conditions such as the thi...

Claims

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Application Information

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IPC IPC(8): E02D5/52E02D33/00
Inventor 回中兴孟青
Owner ZHEJIANG HAITIAN CONSTR GROUP
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