Flexible pile cap for composite foundation

A composite foundation and flexible pile technology, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve problems such as uncoordinated deformation, and achieve the effect of increasing bearing capacity, reducing settlement, and convenient installation and layout.

Inactive Publication Date: 2013-05-01
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a flexible pile cap for composite foundation, which is simple in structure, reasonable in design, low in engineering cost, c

Method used

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  • Flexible pile cap for composite foundation
  • Flexible pile cap for composite foundation
  • Flexible pile cap for composite foundation

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0047] Example 1

[0048] Such as figure 1 , figure 2 and image 3 As shown, the present invention includes a horizontal base 2-1 arranged on the top of the reinforced pile 1, a plurality of oblique force-bearing rods 2-2 arranged above the horizontal base 2-1 in the circumferential direction, and a plurality of said The circular ferrule 2-3 on the oblique force-bearing rod 2-2, a plurality of the oblique force-bearing rods 2-2 are fastened and connected into one body by the circular ferrule 2-3, and the plurality of The bottoms of the diagonally stressed rods 2-2 are fixed on the horizontal base 2-1, and the multiple diagonally stressed rods 2-2 are gradually inclined outward from bottom to top. The number of the multiple oblique force-bearing rods 2-2 is not less than three. The structure and size of the multiple oblique force-bearing rods 2-2 are all the same, and the bottom ends of the multiple oblique force-bearing rods 2-2 are all arranged on the same circle with the diam...

Example Embodiment

[0074] Example 2

[0075] In this embodiment, the difference from Embodiment 1 is: D3=3d, and the included angle α is 35°.

[0076] In this embodiment, the structure, connection relationship and construction process of the remaining parts are the same as those in the first embodiment.

[0077] After the actual construction is completed, the combined pile caps made in Example 1 and the combined pile caps made in Example 2 are respectively used on the same soft soil to be processed; In the three cases of the combined pile cap made in Example 1 and the installation of the combined pile cap made in Example 2, the vertical force and settlement displacement at the same position in the cushion layer 4 are monitored respectively , The monitoring results are shown in Table 1:

[0078] Table 1 Statistical table of the monitoring results of forces and settlements in the vertical direction

[0079]

[0080] It can be seen from Table 1 that when the combined pile cap is not installed, the force in...

Example Embodiment

[0081] Example 3

[0082] Such as Figure 5 with Image 6 As shown, in this embodiment, the difference from embodiment 1 is that the horizontal base 2-1 is a circular base, and the circular base includes a circular steel ring composed of steel bars and is welded and fixed to the The cross-shaped support frame inside the circular steel pipe, the cross-shaped support frame is composed of steel bars one and two steel bars welded, and the round steel ring and the cross-shaped support frame are arranged on the same plane; 4 The oblique force-bearing rod 2-2 includes two oblique force-bearing rods with bottoms respectively fixed at the two ends of the steel bar and two oblique force-bearing rods with bottoms respectively fixed at the two ends of the steel bar. At the same time, the outer side of the combined pile cap is not covered with geotextile 5.

[0083] In this embodiment, the first reinforcing bar and the two oblique force-bearing rods are processed and manufactured as one body, ...

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Abstract

The invention discloses a flexible pile cap for a composite foundation. The flexible pile cap comprises a horizontal base, a plurality of inclined stressed rods and circular hoops, wherein the horizontal base is arranged at the top of a reinforcing pile; the inclined stressed rods are arranged above the horizontal base along the peripheral direction; the circular hoops are arranged on the inclined stressed rods; the inclined stressed rods are integrally fastened and connected through the circular hoops; the bottoms of the inclined stressed rods are all fixed on the horizontal base; the inclined stressed rods are gradually outward inclined from bottom to top; the quantity of the inclined stressed rods is not less than 3; the bottoms of the inclined stressed rods are all arranged on a same circle with a diameter d; the horizontal base is arranged right above the top of the reinforcing pile; and the horizontal base, the inclined stressed rods and the circular hoops form a combined pile cap. The flexible pile cap for the composite foundation has the advantages of simple structure, reasonable design, low construction cost, convenience in processing, manufacturing and constructing, good use effect and capability of effectively solving the deformation and discordance problems of a pile part and an inter-pile soil part of the present pile net composite foundation.

Description

technical field [0001] The invention relates to a pile cap, in particular to a flexible pile cap for a composite foundation. Background technique [0002] For soft soil foundations, the characteristics of deformation under long-term loads such as buildings and embankments are uneven vertical deformation, long deformation stability time, and prominent post-construction settlement. How to control the stability and deformation of the soft soil foundation is the main concern of the engineering field. Improper handling of the soft soil foundation will affect and harm the use of the superstructure. In order to improve the bearing capacity of the soft soil foundation and reduce the post-construction settlement, the soft soil foundation must be reinforced. Among them, the pile-net composite foundation is a commonly used soft soil foundation reinforcement treatment method. Pile-net composite foundation, also known as reinforced cushion pile-supported subgrade, in actual constructio...

Claims

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Application Information

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IPC IPC(8): E02D5/22
Inventor 李晓军王晓华李来宾陈文夫唐亦川
Owner XIAN UNIV OF SCI & TECH
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