CN115478533A - PHC pipe pile core pouring method under confined water condition - Google Patents
PHC pipe pile core pouring method under confined water condition Download PDFInfo
- Publication number
- CN115478533A CN115478533A CN202211135213.6A CN202211135213A CN115478533A CN 115478533 A CN115478533 A CN 115478533A CN 202211135213 A CN202211135213 A CN 202211135213A CN 115478533 A CN115478533 A CN 115478533A
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- China
- Prior art keywords
- drainage hose
- pile core
- reinforcement cage
- pile
- pipe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000002787 reinforcement Effects 0.000 claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 239000011083 cement mortar Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 description 4
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to the technical field of construction of building foundations, in particular to a method for pouring a PHC tubular pile core under the condition of confined water; the method comprises the following steps of 1, processing and manufacturing the reinforcement cage; step 2, installing a drain pipe and installing a reinforcement cage; step 3, pouring pile core concrete; and 4, plugging the drain pipe. By adopting the method, the drainage hose is arranged in the reinforcement cage, so that after concrete is poured, because the pressure in the drainage hose is small, underground water gushing out of the pile core can enter the drainage hose and is discharged out of the pile core through the drainage hose, the problem of water seepage or full spring of the pile core is solved, and the anchoring force of the foundation and the pile is ensured.
Description
Technical Field
The invention relates to the technical field of construction of building foundations, in particular to a method for pouring a PHC tubular pile core under a confined water condition.
Background
The PHC tubular pile and the foundation form an anchoring connection structure after placing a reinforcement cage to a pile core and pouring concrete, and the concrete is in a gel state under the condition of not initially setting; when underground water systems of a construction site are abundant, under the condition of confined water, pile core concrete is flushed by running water and cannot be solidified, so that water seeps outwards all the time at the position of the pile core, the same problem also exists during pouring of foundation concrete, a spring gushing point is formed inside a foundation, the water seepage problem is caused, and the waterproof performance of the structure and the safety performance of the structure are seriously influenced.
Disclosure of Invention
The invention aims to overcome the defects and provide a method for avoiding the problems of water seepage and spring gushing of a pile core by drainage during pile core pouring and plugging after the pile core is initially set, so that the anchoring force of a foundation and a pile is ensured.
In order to achieve the above object, the present invention is realized by:
a PHC tubular pile core pouring method under the condition of confined water comprises
Step 1, manufacturing a reinforcement cage: processing a pile core reinforcement cage according to the drawing requirements, reserving a 3.5mm round notch at the end plate position of the reinforcement cage, wherein the notch is used for inserting a drainage hose;
step 2, arranging a drainage hose and installing a reinforcement cage:
2.1, determining the length of the drainage hose according to the length of the reinforcement cage, sequentially penetrating the drainage hose through end plates of the pile core reinforcement cage, wherein the end part of the drainage hose exceeds the end plates by not less than 50mm;
step 2.2, after the position of the drainage hose in the pile core reinforcement cage is positioned, the drainage hose is sequentially and firmly bound with the main reinforcement of the reinforcement cage, after the binding is finished, the length of the pipe orifice of the drainage hose exposed out of the pile head is not less than 1000mm,
step 2.3, placing the reinforcement cage obtained in the step 2.2 inside the pile core;
step 3, concrete pouring operation of the pile core:
3.1, inserting a guide pipe into the bottom in the pile core during pouring, wherein the distance between a lower port of the guide pipe and an end plate is 200mm;
and 3.2, keeping the lower port of the conduit to be embedded in the concrete all the time during concrete pouring until the pile core is filled, and simultaneously, paying attention to the pipe orifice protection work of the drainage hose during the pile core pouring process to prevent the concrete from being poured into the pipe orifice to block a water outlet.
Step 4, plugging the drainage hose:
step 4.1, pouring fast-hardening cement mortar into the drainage hose after the pile core concrete is initially set, wherein the grouting amount is not less than the volume amount of the drainage pipe embedded in the reinforcement cage;
and 4.2, after grouting, plugging the pipe orifice to finish the pile core concrete grouting work. At the moment, a closed space is formed inside the tubular pile, namely, the confined water cannot flow through the tubular pile to form dynamic water to flush soil and rock around the tubular pile, so that the bearing capacity of the tubular pile is ensured.
By adopting the method, the drainage hose is arranged in the reinforcement cage, so that after concrete is poured, the pressure in the drainage hose is small, so that the underground water gushed from the pile core can enter the drainage hose and be drained out of the pile core through the drainage hose, the problem of water seepage or full spring of the pile core is solved, and the anchoring force of the foundation and the pile is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a pile core reinforcement cage with a drainage hose.
Detailed Description
The invention is further illustrated by the following specific examples.
As shown in figure 1, a PHC tubular pile core pouring method under the condition of confined water comprises
Step 1, manufacturing a reinforcement cage 1: processing a pile core reinforcement cage according to drawing requirements, reserving a 3.5mm round notch at the end plate position of the reinforcement cage 1, wherein the notch is used for inserting a drainage hose 2;
step 2, arranging a drainage hose 2 and installing a reinforcement cage:
2.1, determining the length of the drainage hose 2 according to the length of the reinforcement cage 1, sequentially penetrating the drainage hose 2 through end plates of the pile core reinforcement cage, wherein the end part of the drainage hose 2 exceeds the end plates by not less than 50mm;
step 2.2, after the position of the drainage hose 2 in the pile core reinforcement cage is positioned, the drainage hose 2 is sequentially and firmly bound with the main reinforcement of the reinforcement cage 1, after the binding is finished, the length of the pipe orifice of the drainage hose 2 exposed out of the pile head is not less than 1000mm,
2.3, placing the reinforcement cage 1 obtained in the step 2.2 inside a pile core;
step 3, concrete pouring operation of the pile core:
3.1, inserting a guide pipe into the bottom in the pile core during pouring, wherein the distance between a lower port of the guide pipe and an end plate is 200mm;
and 3.2, keeping the lower port of the conduit to be always embedded in the concrete during concrete pouring until the pile core is fully filled, and simultaneously, paying attention to the pipe orifice protection work of the drainage hose 2 during the pile core pouring process to prevent the concrete from being poured into the pipe orifice to block a water outlet, wherein the poured concrete mixture has vertical pressure, the drainage hose 2 in the pile core is of a hollow structure, the drainage hose 2 forms a pile core drainage pressure relief channel, water can flow out through the drainage hose 2, and the problems that the pressure-bearing water does not have a pressure relief point and erodes the unset concrete mixture all the time in the traditional pouring mode, so that the cement, sand, stone and other mixtures are scoured and separated, the pile core concrete mixture cannot be solidified, and the anchoring force of a pile head and a foundation cannot meet the design requirement are solved.
Step 4, plugging the drainage hose:
step 4.1, pouring fast-hardening cement mortar into the drainage hose after the pile core concrete is initially set, wherein the grouting amount is not less than the volume amount of the drainage pipe embedded in the reinforcement cage;
and 4.2, after grouting, plugging the pipe orifice to finish the pile core concrete grouting work. At the moment, a closed space is formed inside the tubular pile, namely, the confined water cannot flow through the tubular pile to form dynamic water to flush soil and rock around the tubular pile, so that the bearing capacity of the tubular pile is ensured.
By adopting the method, the drainage hose is arranged in the reinforcement cage, so that after concrete is poured, the pressure in the drainage hose is small, so that the underground water gushed from the pile core can enter the drainage hose and be drained out of the pile core through the drainage hose, the problem of water seepage or full spring of the pile core is solved, and the anchoring force of the foundation and the pile is ensured.
Claims (1)
1. A PHC tubular pile core pouring method under the condition of confined water is characterized by comprising the following steps: comprises that
Step 1, manufacturing a reinforcement cage: processing a pile core reinforcement cage according to the drawing requirements, reserving a 3.5mm round notch at the end plate position of the reinforcement cage, wherein the notch is used for inserting a drainage hose;
step 2, arranging a drainage hose and installing a reinforcement cage:
2.1, determining the length of the drainage hose according to the length of the reinforcement cage, sequentially penetrating the drainage hose through end plates of the pile core reinforcement cage, wherein the end part of the drainage hose exceeds the end plates by not less than 50mm;
step 2.2, after the position of the drainage hose in the pile core reinforcement cage is positioned, the drainage hose is tightly bound with the main reinforcement of the reinforcement cage in sequence, after the binding is finished, the length of the pipe orifice of the drainage hose exposed out of the pile head is not less than 1000mm,
step 2.3, placing the reinforcement cage obtained in the step 2.2 inside a pile core;
step 3, concrete pouring operation of the pile core:
3.1, inserting a guide pipe into the bottom in the pile core during pouring, wherein the distance between a lower port of the guide pipe and an end plate is 200mm;
step 3.2, the lower port of the guide pipe is kept to be embedded in the concrete all the time when the concrete is poured until the pile core is filled, and meanwhile, the pile core pouring process is careful about the pipe port protection work of the drainage hose, so that the concrete is prevented from being poured into the pipe port to block a water outlet;
step 4, plugging the drainage hose:
step 4.1, pouring fast-hardening cement mortar into the drainage hose after the pile core concrete is initially set, wherein the grouting amount is not less than the volume amount of the drainage pipe embedded in the reinforcement cage;
step 4.2, after grouting, plugging the pipe orifice to finish the pile core concrete grouting work; at the moment, a closed space is formed inside the pipe pile, namely, the confined water cannot flow through the pipe pile to form dynamic water to flush soil and rock around the pipe pile, so that the bearing capacity of the pipe pile is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211135213.6A CN115478533A (en) | 2022-09-19 | 2022-09-19 | PHC pipe pile core pouring method under confined water condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211135213.6A CN115478533A (en) | 2022-09-19 | 2022-09-19 | PHC pipe pile core pouring method under confined water condition |
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| Publication Number | Publication Date |
|---|---|
| CN115478533A true CN115478533A (en) | 2022-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211135213.6A Pending CN115478533A (en) | 2022-09-19 | 2022-09-19 | PHC pipe pile core pouring method under confined water condition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116837906A (en) * | 2023-07-04 | 2023-10-03 | 上海宝冶集团有限公司 | Water burst blocking method for pile head of prefabricated pipe pile |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212001219U (en) * | 2020-01-19 | 2020-11-24 | 中国建筑第八工程局有限公司 | Connecting structure of precast tubular pile and building bottom plate |
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2022
- 2022-09-19 CN CN202211135213.6A patent/CN115478533A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212001219U (en) * | 2020-01-19 | 2020-11-24 | 中国建筑第八工程局有限公司 | Connecting structure of precast tubular pile and building bottom plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116837906A (en) * | 2023-07-04 | 2023-10-03 | 上海宝冶集团有限公司 | Water burst blocking method for pile head of prefabricated pipe pile |
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Application publication date: 20221216 |
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| RJ01 | Rejection of invention patent application after publication |