CN211816202U - Novel drilling and pouring energy pile in pipe arrangement form - Google Patents
Novel drilling and pouring energy pile in pipe arrangement form Download PDFInfo
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- CN211816202U CN211816202U CN201922079301.9U CN201922079301U CN211816202U CN 211816202 U CN211816202 U CN 211816202U CN 201922079301 U CN201922079301 U CN 201922079301U CN 211816202 U CN211816202 U CN 211816202U
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- heat
- reinforcement cage
- transfer pipe
- steel reinforcement
- pile
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- 238000005553 drilling Methods 0.000 title claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 79
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 47
- 239000010959 steel Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000011218 segmentation Effects 0.000 claims abstract description 4
- 230000008676 import Effects 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims 5
- 238000010276 construction Methods 0.000 abstract description 11
- 230000010412 perfusion Effects 0.000 abstract description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 12
- 238000003466 welding Methods 0.000 description 11
- 210000001503 joint Anatomy 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000002002 slurry Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 238000007667 floating Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Piles And Underground Anchors (AREA)
Abstract
The utility model belongs to the technical field of civil construction engineering, specifically disclose a novel drilling perfusion energy stake of stringing form, including the bored concrete pile, set up the heat-transfer pipe in the bored concrete pile, with the water pump of heat-transfer pipe import UNICOM to and the heat collector of heat-transfer pipe export UNICOM, water pump and heat collector all with heat transfer structure UNICOM, the bored concrete pile is transferred by a plurality of steel reinforcement cage segmentation and is welded and form, and every steel reinforcement cage comprises top steel reinforcement cage, bottom steel reinforcement cage and middle part steel reinforcement cage three-section, and the steel reinforcement hoop has all been welded to every section steel reinforcement cage top and bottom, the heat-transfer pipe passes the steel reinforcement hoop ligature to the steel reinforcement cage on, the heat-transfer pipe accesss to the heat collector after water pump and heat transfer structure, the utility model has the advantages of.
Description
Technical Field
The utility model belongs to the technical field of civil construction engineering, especially, relate to a novel drilling perfusion energy stake of stringing form.
Background
Shallow geothermal energy is a clean, sustainable energy, the cost is low, the use is convenient, the most important distribution range is wide, the application prospect is considerable, the energy pile technology is that stable and continuous terrestrial heat in the lower stratum is utilized to carry out heat exchange on the upper structure: heat supply can be carried out in winter; the cooling or refrigeration can be carried out in summer, the utilization of the energy pile at present stays on medium and small projects, and the utilization of large and extra large projects is very little.
The bored concrete pile has important meaning to the energy stake is used for the major engineering, and major diameter bored concrete energy stake does not popularize and apply mainly because construction process is complicated, the steel reinforcement cage segmentation is transferred the heat-transfer pipe and is arranged the difficulty, the heat-transfer pipe appears easily by the electric welding or the condition that the concrete pipe destroyed, factor influences such as unstable quality, consequently, how to solve above-mentioned problem and select the most suitable way of laying the pipe is the problem that vast scientific research technical staff await a great deal of solution. The patent document with the application number of 201820023683.6 discloses a ground source heat pump energy pile, the method is provided with circular pipe sections which are connected up and down, a heat exchange pipe is subjected to branch innovation, the heat exchange efficiency is improved, the stress on the heat exchange pipeline in the axial direction is decomposed, and the heat exchange pipeline in the pile is prevented from being deformed or even broken due to large stress after load is applied to the pile top; the patent with the application number of CN201710294328.2 discloses a heat exchange system and a construction process based on a deep buried pipe and an energy pile, and the method overcomes the defects that the traditional buried pipe ground source heat pump system occupies underground space, the energy pile is shallow in embedment and the heat exchange amount is limited, improves the utilization rate of clean geothermal energy, but the heat exchange pipe embedded in the pile is too short, cannot fully utilize geothermal resources, has low survival rate of the heat exchange pipe and the like.
Disclosure of Invention
The utility model aims at providing a novel drilling bored concrete energy stake of stringing form, with the energy stake promote large-scale engineering on, overcome some defects and not enough on the bored concrete energy stake construction technology, strengthen the geothermal utilization ratio of bored concrete energy stake.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides a novel drilling perfusion energy stake of stringing form, includes the bored concrete pile, sets up the heat-transfer pipe in the bored concrete pile, with the water pump of heat-transfer pipe import UNICOM to and the heat collector of heat-transfer pipe export UNICOM, water pump and heat collector all with heat transfer structure UNICOM, the bored concrete pile is transferred by a plurality of steel reinforcement cage segmentation and is welded and form, and every steel reinforcement cage comprises top steel reinforcement cage, bottom steel reinforcement cage and middle part steel reinforcement cage three-section, and the steel reinforcement hoop has all been welded to every section steel reinforcement cage top and bottom, the heat-transfer pipe passes the steel reinforcement hoop and ligatures to the steel reinforcement cage on, the heat-transfer pipe accesss to the heat collector.
Furthermore, the heat transfer pipe is in a multi-section splicing shape, and an interface is butted by hot melt or a joint to form an integral loop.
Further, the bored concrete pile body comprises atress reinforcing bar, reinforcement stirrup, spiral stirrup and concrete, and the atress reinforcing bar evenly arranges along pile body circumference, and reinforcement stirrup welds inside the atress reinforcing bar every 2m in vertical direction, and the atress reinforcing bar outside adopts spiral stirrup welding, and the heat-transfer pipe is on two atress reinforcing bar middle parts ligatures to spiral stirrup.
Furthermore, the steel bar hoop is semicircular, and two ends of the steel bar hoop are respectively welded on the reinforcing stirrups at the top and the bottom of each section of the steel bar cage.
Further, heat conducting liquid is filled in the heat transfer pipe, the heat conducting liquid is a mixture of ethylene glycol and water, and the proportion of the ethylene glycol to the water is 20-40%: 60-80%.
A construction method of a novel pipe distribution type drilling and pouring energy pile comprises the following steps:
1) opening and forming holes: when the pile position, the verticality and the early preparation work are confirmed to meet the standard, opening holes;
2) binding a heat transfer pipe: binding heat transfer tubes of the welded reinforcement cage in a reinforcement factory;
3) hoisting and welding a reinforcement cage: lowering each section of reinforcement cage bound with the heat transfer pipe into the hole in a subsection mode, and welding the upper reinforcement cage in sequence;
4) butt joint of heat transfer pipes: after the welding is finished, cooling the steel bars, and butting the tube head of the heat transfer tube with the tube head of the lower steel bar cage, wherein hot melting butt joint or joint butt joint can be adopted;
5) repeating the step 3) and the step 4) until the steel reinforcement cage is completely placed;
6) pouring concrete: the bored pile concrete is poured into the underwater concrete by adopting a guide pipe method, and the height of the poured pile top is not less than 0.5m higher than the designed elevation;
7) connecting a heat transfer pipe: and (3) introducing heat-conducting liquid into the heat-conducting pipe, and connecting the heat-conducting pipe, the water pump and the heat collector in series to form a closed loop.
Further, when the heat transfer pipes are bound in the step 2), the pipe spacing is 35-55 cm, the heat transfer pipes are bound by protective leather sleeves every 1-1.5 m, a binding belt is used for binding the middle of the heat transfer pipes, the heat transfer pipes at the reinforced stirrups are bound by protective sleeves, and the end parts of the heat transfer pipes bound by each section of reinforcement cage pass through welded reinforcement hoops; the heat transfer pipe of stake top portion reserves 3~4m, and the heat transfer pipe of welding department needs to reserve 2m ~3m is transferred to every section steel reinforcement cage.
Further, the head of the heat transfer pipe in the step 3) is fixed to a safe area, and the stressed steel bar is welded in a double-sided lap joint mode.
Further, the pile head heat transfer pipe needs to be protected before concrete pouring, specifically, floating slurry of the pile head of the cast-in-place pile is chiseled off, the heat transfer pipe 2m below the pile top is protected by a steel pipe, and the steel pipe is fixed on a reinforcement cage.
Further, after the concrete is poured in the step 6), the floating slurry of the pile head is chiseled off, so that the quality of the pile head concrete is ensured.
The utility model has the advantages that: the utility model discloses a filling energy stake is under the condition that does not influence normal construction, optimize the construction, protect the heat transfer pipe when strengthening the construction, and novel stringing form divide into the multistage formula, reduce the stress that the heat transfer pipeline received in the axial, avoid the pile top to apply the load after, the heat transfer pipeline in the stake bears great stress and warp or even fracture, the stringing is sufficient in the stake simultaneously, can make full use of geothermal resources, the heat transfer effect will be higher than ordinary U type stringing and spiral stringing, the cost is low, and wide application, can not only reduce the pile body deformation that expend with heat and contract with cold and arouse, and can use on large-scale green energy-saving project.
Drawings
Fig. 1 is a schematic view of the arrangement of heat transfer tubes according to the present invention.
Fig. 2 is a schematic view of the construction sequence of the present invention.
Fig. 3 is a schematic structural diagram of the cast-in-place energy pile of the present invention.
1. Filling piles; 2. a heat transfer tube; 3. stressed steel bars; 4. a spiral stirrup; 5. a steel bar hoop; 6. reinforcing the stirrup; 7. a heat collector; 8. a water pump; 9. a heat exchange structure; 10. a joint; 11. a reinforcement cage; 11-1, a top reinforcement cage; 11-2, a middle reinforcement cage; 11-3, a bottom reinforcement cage; 12. concrete; 13. and (5) protecting the steel pipe.
Detailed Description
As shown in figure 1, the novel pipe distribution type drilling and pouring energy pile comprises a pouring pile 1, the diameter of the pouring pile is 0.8-2.5 m, the length of the pile is greater than 20m, a heat transfer pipe 2 arranged in the pouring pile 1, a water pump 8 communicated with an inlet of the heat transfer pipe 2, and a heat collector 7 communicated with an outlet of the heat transfer pipe 2, wherein the water pump 8 and the heat collector 7 are communicated with a heat exchange structure 9, the pouring pile 1 is formed by welding a plurality of reinforcement cages 11 in a segmented mode, each reinforcement cage 11 is composed of a top reinforcement cage 11-1, a bottom reinforcement cage 11-2 and an intermediate reinforcement cage 11-3, reinforcement hoops 5 are welded to the top and the bottom of each reinforcement cage 11, the reinforcement hoops 5 are semicircular, two ends of each reinforcement hoop 5 are respectively welded to reinforcement hoops 6 on the top and the bottom of each reinforcement cage 11, the radius of each reinforcement hoop 5 is 2-3 cm, because the heat-transfer pipe 2 is protruding more obvious when passing through the reinforcement stirrup 6, weld reinforcement stirrup 5 and make the heat-transfer pipe pass through reinforcement stirrup 5, can play the effect of protection heat-transfer pipe when transferring the concrete pipe, heat-transfer pipe 2 passes reinforcement stirrup 5 ligature to reinforcement cage 11 on, heat-transfer pipe 2 leads to heat collector 7 after water pump 8 and heat transfer structure 9, 2 stringing of heat-transfer pipe is the multistage concatenation form, and the kneck is with hot melt or joint 10 butt joint formation whole return circuit, heat-transfer pipe 2 intussuseption has heat-conducting liquid, and heat-conducting liquid is the mixture of ethylene glycol and water, and the ratio of ethylene glycol and water is 20~ 40%: 60-80%.
Further, 1 pile body of bored concrete pile comprises atress reinforcing bar 3, reinforcement stirrup 6, spiral stirrup 4 and concrete 12, and atress reinforcing bar 3 evenly arranges along the pile body circumference, and reinforcement stirrup 6 welds inside atress reinforcing bar 3 every 2m on vertical direction, and 3 outsides of atress reinforcing bar adopt spiral stirrup 4 to weld, and heat-transfer pipe 2 is on spiral stirrup 4 is ligatured at 3 middle parts of two atress reinforcing bars.
The novel U type pipe laying length of arranging in the stake is greater than the ordinary U type stringing of the same kind stake, and the pile head only has a pair of inlet outlet simultaneously to it is less at the regional difference in height of intensive stringing, can suitably reduce the pump lift demand, compare in parallelly connected many U type stringing can save water pump quantity, 2~3 bored concrete piles use a water pump jointly and can carry out cycle work. The pipe diameter is between 20mm ~25mm, and the too big water phenomenon appears in upper portion bending department that causes easily of pipe diameter.
A construction method of a novel pipe distribution type drilling and pouring energy pile comprises the following steps:
1) opening and forming holes: when the pile position, the verticality and the like are confirmed to meet the standard, opening holes, pouring slurry into the holes before drilling, wherein the opening holes are performed by adopting a low stroke; after the hole is formed, measuring the central position, the pore diameter gradient, the pore depth and the like of the pile hole in time, and immediately cleaning the hole by adopting a slurry changing method after meeting the design and specification requirements;
2) binding a heat transfer pipe: firstly, binding a heat transfer pipe 2 on a welded reinforcement cage 11 in a reinforcement factory, and selecting different pipe intervals according to the size of the pile diameter, wherein the pipe intervals are controlled to be 35-55 cm; secondly, binding the heat transfer pipes at intervals of 1-1.5 m by using protective leather sleeves, and binding the heat transfer pipes by using binding belts in the middle; thirdly, the heat transfer pipe at the position of the reinforcement stirrup 6 also needs to be bound by a protective sleeve; fourthly, the end part of the heat transfer pipe bound by each section of the reinforcement cage 11 needs to penetrate through the welded reinforcement hoop 5; reserving the heat transfer pipes at the top of the pile for 3-4 m, and reserving the heat transfer pipes at the positions where the steel reinforcement cages are placed down and welded for 2-3 m;
3) hoisting and welding a reinforcement cage: putting each section of reinforcement cage 11 bound with the heat transfer pipe into a hole in a segmented manner, welding the upper reinforcement cage 11 in sequence, fixing the head of the heat transfer pipe to a safe region to avoid damaging the heat transfer pipe, and adopting double-sided lap welding for the stressed reinforcement 3;
4) butt joint of heat transfer pipes: after the welding is finished, cooling the steel bars, and butting the tube head of the heat transfer tube with the tube head of the lower steel bar cage, wherein hot melting butt joint or joint butt joint can be adopted;
5) repeating the steps 3) and 4) until the steel reinforcement cage is completely placed;
6) protecting a heat transfer pipe of a pile head: the large-diameter cast-in-place pile often has a pile head chiseled to remove floating slurry, a heat transfer pipe with the depth of 2m below the pile top needs to be protected by a steel pipe 13, and the steel pipe 13 is fixed on a reinforcement cage 11;
7) pouring concrete: the bored pile concrete is poured into the underwater concrete 12 by adopting a guide pipe method, the height of the poured pile top is ensured to be not less than 0.5m higher than the designed elevation, and finally, floating slurry is chiseled off from the pile head to ensure the quality of the pile head concrete;
8) connecting a heat transfer pipe: water with antifreeze is introduced into the heat transfer pipe, and the heat transfer pipe 2, the water pump 8, the heat exchange structure 9 and the heat collector 7 are connected in series to form a closed loop;
9) shallow geothermal energy in with the soil layer can transmit the heat pipe through pile body concrete, gives heat conduction liquid through the heat pipe heat transfer, and heat conduction liquid in the heat pipe return circuit is constantly carried the heat collector with the heat circulation.
Claims (5)
1. The utility model provides a novel drilling bored concrete energy stake of stringing form, includes the bored concrete pile, sets up the heat-transfer pipe in the bored concrete pile, with the water pump of heat-transfer pipe import UNICOM to and the heat collector of heat-transfer pipe export UNICOM, water pump and heat collector all with heat transfer structure UNICOM, its characterized in that: the bored concrete pile is transferred by a plurality of steel reinforcement cage segmentation and is welded and form, and every steel reinforcement cage comprises top steel reinforcement cage, bottom steel reinforcement cage and middle part steel reinforcement cage three-section, and every section steel reinforcement cage top and bottom have all been welded the steel reinforcement hoop, the heat-transfer pipe passes on the steel reinforcement hoop ligature to the steel reinforcement cage, the heat-transfer pipe leads to the heat collector after water pump and heat transfer structure.
2. The new piped form of bored energy pile of claim 1, wherein: the heat transfer pipe is in a multi-section splicing shape, and an interface is butted by hot melting or a joint to form an integral loop.
3. The new piped form of bored energy pile of claim 2, wherein: the cast-in-place pile body comprises the stress reinforcing steel bars, reinforcing stirrups, spiral stirrups and concrete, and the stress reinforcing steel bars are evenly arranged along the circumference of the pile body, and the reinforcing stirrups are welded inside the stress reinforcing steel bars at intervals of 2m in the vertical direction, and the spiral stirrups are welded outside the stress reinforcing steel bars, and the heat transfer pipe is bound to the spiral stirrups in the middle of the two stress reinforcing steel bars.
4. The new piped form of bored energy pile of claim 3, wherein: the reinforcement hoop is semicircular, and two ends of the reinforcement hoop are respectively welded on the reinforcement hoops at the top and the bottom of each section of the reinforcement cage.
5. The new piped form of bored energy pile of claim 4, wherein: the heat transfer pipe is internally filled with heat-conducting liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922079301.9U CN211816202U (en) | 2019-11-27 | 2019-11-27 | Novel drilling and pouring energy pile in pipe arrangement form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922079301.9U CN211816202U (en) | 2019-11-27 | 2019-11-27 | Novel drilling and pouring energy pile in pipe arrangement form |
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| Publication Number | Publication Date |
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| CN211816202U true CN211816202U (en) | 2020-10-30 |
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| CN201922079301.9U Expired - Fee Related CN211816202U (en) | 2019-11-27 | 2019-11-27 | Novel drilling and pouring energy pile in pipe arrangement form |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042112A (en) * | 2019-11-27 | 2020-04-21 | 中建七局第四建筑有限公司 | Novel pipe distribution type drilling and pouring energy pile and construction method thereof |
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2019
- 2019-11-27 CN CN201922079301.9U patent/CN211816202U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042112A (en) * | 2019-11-27 | 2020-04-21 | 中建七局第四建筑有限公司 | Novel pipe distribution type drilling and pouring energy pile and construction method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201030 |
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| CF01 | Termination of patent right due to non-payment of annual fee |