Connecting structure of precast pile and bearing platform and construction method

A technology for connecting structures and construction methods, which is applied in basic structure engineering, construction, etc., and can solve the problem of insufficient connection between steel bars and longitudinal reinforcement at the bottom of caps, problems with connection and construction methods in engineering design, and cracking and damage at the joints between prefabricated piles and caps and other problems, to achieve the effect of simple and fast connection, easy quality assurance and simplified construction process

Inactive Publication Date: 2020-01-17
ANHUI INST OF BUILDING RES & DESIGN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When prefabricated piles are used as vertical load-bearing components, the connection with the cap and the construction method have always been difficult problems for engineering design and construction personnel; the commonly used technical method is mainly to pour concrete after planting reinforcement in the pile cavity, but the construction site reinforcement technology Complicated, difficult to ensure the anchorage depth of steel bars, insufficient connection between steel bars and longitudinal steel bars at the bottom of the cap, etc., may easily cause cracking and damage at the joint between prefabricated piles and caps

Method used

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  • Connecting structure of precast pile and bearing platform and construction method
  • Connecting structure of precast pile and bearing platform and construction method
  • Connecting structure of precast pile and bearing platform and construction method

Examples

Experimental program
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Effect test

Embodiment 1

[0024] see figure 1 , this embodiment provides a connection structure between a prefabricated pile and a cap, including an upper end plate 1 and a lower end plate 2 with the same central axis, and the upper end plate 1 and the lower end plate 2 are connected by a number of main bars 3. This embodiment The cross-sections of the upper and lower end plates 1 and 2 are both circular, and the radius of the upper end plate 1 is larger than that of the lower end plate 2 , that is, the cross-section of the upper end plate 1 can cover the cross-section of the lower end plate 2 .

[0025] see figure 2 and combine figure 1 , a number of main ribs 3 are vertically arranged along the circumferential direction of the lower end plate 2, the top end of the main ribs 3 is connected to the upper end plate 1, the corresponding main rib holes 21 are arranged in the upper end plate 1 and the lower end plate 2, and the two ends of the main rib 3 are connected to the main rib holes 21, Stirrups 4...

Embodiment 2

[0028] On the basis of Embodiment 1, in this embodiment, the prefabricated pile 7 to be connected is preferably a hollow cylindrical structure, and the two ends of the prefabricated pile 7 are provided with corresponding prefabricated pile end plates 71 of annular structure, and the corresponding upper end plate 1 and the lower end plate 2 are both circular in cross section, the lower end plate 2 is adapted to the hollow cavity of the prefabricated pile 7 , and the outer diameter of the upper end plate 1 is greater than or equal to the outer diameter of the prefabricated pile end plate 71 .

[0029] see image 3 and Figure 4 , the present embodiment provides a construction method for the connection structure of a prefabricated pile and a cap, comprising the following steps:

[0030] Step (1), preprocessing

[0031] Remove the foundation soil around the prefabricated pile 7, make the pile top of the prefabricated pile 7 reach the design elevation, and be 20cm~40cm higher tha...

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Abstract

The invention discloses a connecting structure of a precast pile and a bearing platform and a construction method. The connecting structure comprises an upper end plate and a lower end plate which arecoaxially connected, wherein the cross section of the upper end plate can cover the cross section of the lower end plate; a plurality of main ribs are vertically arranged in the circumferential direction of the lower end plate; the top ends of the main ribs are connected to the upper end plate; and a plurality of connecting ribs extend downwards in the circumferential direction of the upper end plate. The construction method comprises the steps that (1) the connecting structure and the precast pile are fixed; (2) bearing platform reinforcing bars are arranged; and (3) the bearing platform ispoured on the connecting structure. The connecting structure provides stable connection of the precast pile and the bearing platform, the construction method is easy to operate, and pouring of the connecting structure and pouring of the bearing platform can be conducted at the same time.

Description

technical field [0001] The invention belongs to the technical field of building pile foundation engineering, and particularly relates to a connection structure and a construction method of a prefabricated pile and a cap. Background technique [0002] In recent years, prefabricated piles have been widely used in the field of geotechnical engineering due to their factory production, short construction period and high vertical bearing capacity, and have gradually become one of the dominant pile types in pile foundation engineering. When the prefabricated pile is used as a vertical bearing member, the connection with the bearing platform and the construction method have always been a difficult problem for engineering design and construction personnel; the commonly used technical method is mainly to plant reinforcement in the pile cavity and then pour concrete, but the construction site reinforcement technology It is complicated, it is difficult to ensure the anchorage depth of t...

Claims

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Application Information

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IPC IPC(8): E02D27/12E02D27/14
CPCE02D27/12E02D27/14
Inventor 吴平郭杨乐腾胜毕大君
Owner ANHUI INST OF BUILDING RES & DESIGN
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