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CFG pile, pipe pile embankment reinforcement system and construction method thereof

A construction method and pipe pile technology, which can be applied to roads, sheet pile walls, and foundation structure engineering, etc., can solve the problems of difficult degradation of concrete pile heads, high requirements for embankment filling specifications, and long construction period, so as to achieve filling and compaction The effect of low requirements, small scope of base reinforcement, and short construction period

Inactive Publication Date: 2010-10-13
何志红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing CFG piles and pipe piles are used as subgrade composite foundation reinforcement treatment technologies. CFG piles have deficiencies in the construction technology of clearing the soil between piles and cutting off pile heads: the scope of foundation treatment is large, the specification of embankment filling is high, the construction period is long, and conventional subgrades collide. Reinforced concrete structures need to fill the transition section, and the subgrade also needs to be filled with crushed stone on the surface of the subgrade bed. The filling compaction standard is high, the inspection procedure is troublesome, the slope of the embankment is large, the construction land is large, the maintenance investment is large, and construction is required. Ancillary works: The conventional CFG pile construction process needs to remove the soil between the piles, cut off the pile head, spoil the soil, and abandon the pile head. The amount of work is large, and the concrete pile head is difficult to degrade. At the same time, social resources are wasted, which is uneconomical and environmentally friendly

Method used

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  • CFG pile, pipe pile embankment reinforcement system and construction method thereof
  • CFG pile, pipe pile embankment reinforcement system and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Construction method embodiment 1 of CFG pile, pipe pile embankment reinforcement system: in the following order

[0029] 1. Carry out the construction of bottom pipe piles or one row of pipe piles or CFG piles on both sides of the support structure;

[0030] 2. Arrange steel bars, formwork, pour concrete for the retaining structure, and reserve the cup mouth of the electrochemical support and the prestressed anchor cable channel in the concrete for the retaining structure;

[0031] 3. The soil is compacted and filled to the bottom of the prestressed raft to build a pile foundation construction platform;

[0032] 4. Construction of 4 rows of pipe piles or CFG piles in the middle of the embankment;

[0033] 5. Clean up the prestressed raft foundation, and clean out the prestressed raft foundation groove on the pile foundation construction platform above the middle pipe pile or the middle CFG pile;

[0034] 6. Thread the prestressed anchor cable of the raft slab, lay out...

Embodiment 2

[0044] Construction method embodiment 2 of CFG pile, pipe pile embankment reinforcement system: in the following order

[0045] 1. Carry out the construction of bottom pipe piles or two rows of pipe piles or CFG piles on both sides of the support structure;

[0046] 2. Arrange steel bars, formwork, pour concrete for the retaining structure, and reserve the cup mouth of the electrochemical support and the prestressed anchor cable channel in the concrete for the retaining structure;

[0047] 3. The soil is compacted and filled to the bottom of the prestressed raft to build a pile foundation construction platform;

[0048] 4. Construction of 12 rows of pipe piles or CFG piles in the middle of the embankment;

[0049] 5. Clean up the prestressed raft foundation, and clean out the prestressed raft foundation groove on the pile foundation construction platform above the middle pipe pile or the middle CFG pile;

[0050] 6. Thread and pull the raft prestressed anchor cable, and lay ...

Embodiment 3

[0060] Construction method embodiment 3 of CFG pile, pipe pile embankment reinforcement system: in the following order

[0061] 1. Carry out the construction of bottom pipe piles or 3 rows of pipe piles or CFG piles on both sides of the support structure;

[0062] 2. Arrange steel bars, formwork, pour concrete for the retaining structure, and reserve the cup mouth of the electrochemical support and the prestressed anchor cable channel in the concrete for the retaining structure;

[0063] 3. The soil is compacted and filled to the bottom of the prestressed raft to build a pile foundation construction platform;

[0064] 4. Construction of 20 rows of pipe piles or CFG piles in the middle of the embankment;

[0065] 5. Clean up the prestressed raft foundation, and clean out the prestressed raft foundation groove on the pile foundation construction platform above the middle pipe pile or the middle CFG pile;

[0066] 6. Thread and pull the raft prestressed anchor cable, and lay ou...

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Abstract

The invention relates to a CFG pile and tubular pile embankment reinforcing system and a construction method thereof, which is used in the whole field for building railway, highway, water conservancy, city planning, houses and the like. The system comprises a CFG pile or a tubular pile, a prestress raft plate, a supporting and retaining structure, an unballasted track plate or a ballasted track plate, a pile foundation construction platform and a roadbed; the CFG pile or the tubular pile comprises a bottom tubular pile of the supporting and retaining structure and a middle tubular pile or a middle CFG pile of embankment; the bottom tubular pile of the supporting and retaining structure is arranged on the lower part of the bottom of the supporting and retaining structure or two sides of the embankment; the upper part of the bottom tubular pile of the supporting and retaining structure is cast with the supporting and retaining structure; an electrochemical supporting set cup mouth and aprestress anchor rope pore canal are reserved in the supporting and retaining structure; soil is filled and compacted between the supporting and retaining structure to construct the pile foundation construction platform; the pile foundation construction platform is provided with the middle tubular pile or the middle CFG pile; the upper part of the middle tubular pile or the middle CFG pile is cast with the prestress raft plate; the prestress anchor rope pore canal is reserved in prestress raft plate; and a prestress anchor rope is arranged in the prestress anchor rope pore canal of the supporting and retaining structure and the prestress raft plate.

Description

technical field [0001] The invention relates to a CFG pile (cement fly ash gravel pile), a pipe pile embankment reinforcement system and a construction method thereof, which is applicable to the entire construction fields of railways, highways, water conservancy, municipal administration, houses and the like. Background technique [0002] Existing CFG piles and pipe piles are used as subgrade composite foundation reinforcement treatment technologies. CFG piles have deficiencies in the construction technology of clearing the soil between piles and cutting off pile heads: the scope of foundation treatment is large, the specification of embankment filling is high, the construction period is long, and conventional subgrades collide. Reinforced concrete structures need to fill the transition section, and the subgrade also needs to be filled with crushed stone on the surface of the subgrade bed. The filling compaction standard is high, the inspection procedure is troublesome, the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/12E02D5/34E02D7/20E02D7/02E01B27/00
Inventor 何志红
Owner 何志红
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