CN210636421U - Underwater hollowing defect repairing device for navigation wall pile foundation of ship lock on gravel layer foundation - Google Patents
Underwater hollowing defect repairing device for navigation wall pile foundation of ship lock on gravel layer foundation Download PDFInfo
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- CN210636421U CN210636421U CN201921175532.3U CN201921175532U CN210636421U CN 210636421 U CN210636421 U CN 210636421U CN 201921175532 U CN201921175532 U CN 201921175532U CN 210636421 U CN210636421 U CN 210636421U
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Abstract
The utility model provides an underwater hollowing defect repair structure of a navigation wall pile foundation of a ship lock on a gravel layer foundation, which comprises an impermeable concrete cast-in-place pile, plain concrete piles, concrete connecting beams, embedded bars and non-dispersed concrete fillers, wherein the impermeable concrete cast-in-place pile row is arranged at the upstream surface 2m away from the underwater hollowing defect of the navigation wall pile foundation, a wall is continuously cast, the pile is deeply embedded into bedrock for 2-4 m, the plain concrete piles are cast between the impermeable concrete cast-in-place piles, the pile is deeply embedded into bedrock for 1-2 m, the top of the impermeable concrete cast-in-place pile is provided with the concrete connecting beams, and the concrete connecting beams are connected with the navigation pile foundation through the embedded bars; the underwater hollowing defect of the navigation wall pile foundation is backfilled by non-dispersed concrete filler which is not foundation-clearing. The utility model has the advantages that: the washing-proof effect is good, the popularization and the application of washing-proof protection such as a hydropower station workshop tailwater guide wall, a ship lock navigation wall and the like are facilitated, and the washing-proof protection method has great safety benefits and economic benefits.
Description
Technical Field
The utility model relates to a hydraulic and hydroelectric engineering technical field, concretely relates to shiplock navigation wall pile foundation's defect prosthetic devices that undercuts under water on gravel layer basis.
Background
After a dam is built, the scouring and undercutting of a sand gravel riverbed under the dam is a common phenomenon, a riverway deep groove is formed by scouring, the downward drainage water flow can rush to a navigation channel navigation wall along the trend, and after sand gravel around a pile foundation at the lower part of the navigation wall is scoured away, the pile foundation is exposed on the riverbed surface. And the concrete protective layer is partially peeled off to expose the reinforcing steel bars under the impact of water flow, sand and gravel throughout the year on the exposed section pile foundation. After the original closed sand gravel layer is washed, the lower part of the navigation wall flow isolation wall loses the flow isolation function, and potential safety hazards are caused to the stop and navigation of the ship waiting for the lock.
The sand gravel with a certain depth at the pile foundation section of the downstream navigation wall is hollowed, and the pile foundation of the navigation wall is embedded into the weakly weathered bedrock, so that the vertical and horizontal bearing capacity of the pile can still completely meet the design requirement even if most of the sand gravel covering layer on the upper part of the pile is lost; however, under the impact of the sand gravel carried by flood for a long time, the protective layer falls off to expose and corrode the stressed steel bars, if reinforcement protection cannot be achieved for a long time, the pile foundation is finally broken, and the navigation wall collapses.
According to the reasons and the hazard analysis, the key of repairing the hollowing defect of the navigation wall is to prevent the water flow under the wall from being communicated, prevent the concrete protection layer of the pile body from continuously peeling off and wrap the periphery of the pile with concrete. The repairing idea is as follows: pouring a concrete wall around the grouped piles under the navigation wall bottom to form a protective body which can block water flow and wrap the pile body, thereby achieving the aim of repairing; the vertical and horizontal bearing capacity of the navigation wall is still borne by the pile foundation, and the bearing capacity of the newly poured wall is not needed. The traditional repairing method comprises a dry land construction scheme, an underwater direct repairing construction scheme and the like.
(1) According to the dry land construction scheme, a conventional earth-rock cofferdam is adopted, a downstream navigation wall is closed, sand gravel is dry-bedded to a strongly weathered rock surface, then concrete is poured into a new wall body through a vertical template according to a designed section, and the purpose of reinforcing the navigation wall foundation of the section is achieved.
(2) The underwater direct repair construction scheme has the energy efficiency of pouring the underwater concrete wall only when the underwater sand gravel is foundation-cleaned to the bedrock, cannot adopt construction machinery to perform foundation cleaning on the underwater sand gravel layer at present, and has huge and infeasible cost of underwater manual foundation cleaning.
Disclosure of Invention
The utility model aims at providing a shiplock navigation wall pile foundation's defect prosthetic devices that undercuts under water on gravel layer basis, safe and reliable, easy construction.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
an underwater hollowing defect repairing device for a navigation wall pile foundation of a ship lock on a gravel layer foundation comprises an impermeable concrete cast-in-place pile, plain concrete piles, concrete connecting beams, embedded ribs and non-dispersed concrete fillers, wherein the impermeable concrete cast-in-place pile is arranged at a position 1.5-2.5 m away from the upstream surface of the underwater hollowing defect of the navigation wall pile foundation, the impermeable concrete cast-in-place pile is continuously cast into a wall, the impermeable concrete cast-in-place pile is deep into a bed rock for 2-4 m, the plain concrete piles are cast between the impermeable concrete cast-in-place piles, the plain concrete piles are deep into the bed rock for 1-2 m, the concrete connecting beams are arranged at the pile tops of the impermeable concrete cast-in-place piles, and the pile foundation concrete connecting beams are connected with the navigation wall through the embedded ribs; the underwater hollowing defect of the navigation wall pile foundation is backfilled by pouring underwater undispersed concrete filler without clearing foundation, and the backfilling range is between the impermeable concrete cast-in-place pile at one side of the navigation wall pile foundation and the steel sheet pile template arranged at the other side of the navigation wall pile foundation.
Further, the outer side of the pile top of the impermeable concrete cast-in-place pile adopts an alloy expanded rock pocket pressure foot.
Furthermore, the seepage-proofing concrete cast-in-place piles are made of C30 concrete, the pile diameter is 100cm, and the distance between the seepage-proofing concrete cast-in-place piles is 120 cm.
Further, the pile diameter of the plain concrete piles is 60cm, and the distance between the plain concrete piles is 120 cm.
Furthermore, the concrete connecting beam is made of C30 concrete, and the section size (width multiplied by height) is 2m multiplied by 1 m.
Furthermore, the external diameter of the planting bars is 25mm, and the distance between the planting bars is 50 cm.
Further, the non-dispersive concrete filler adopts C25 concrete.
Further, the steel sheet pile template arranged on the other side of the navigation wall pile foundation adopts an alloy net bag stone throwing presser foot.
Furthermore, the single stone containing capacity of the alloy net stone pocket is not less than 4m3The diameter of the stone block is not less than 50 cm.
Compared with the prior art, the utility model, have following advantage:
the utility model discloses set up the prevention of seepage concrete bored concrete pile in the navigation wall pile foundation outside to link into a protection to the navigation wall pile foundation through the bar planting with concrete bored concrete pile, concrete tie-beam and navigation wall three, utilize the concrete bored concrete pile as the template simultaneously, will be drawn empty department at the navigation wall bottom and backfill the operation of backfilling promptly can not discharge water, the invention can thoroughly solve the problem that navigation wall outside footing was eluriated by the flood and arouses, and compare the simple economy of construction with the past method, prevent that the elutriation is effectual, be favorable to the popularization and application of power station factory building tailrace guide wall, scour prevention protection such as ship lock navigation wall, have huge safety benefits and economic benefits.
Drawings
Fig. 1 is the utility model relates to a gravel layer basis goes up lock navigation wall pile foundation's defect prosthetic devices that undercuts under water's structural schematic.
3 fig. 3 2 3 is 3 the 3 pile 3 body 3 a 3- 3 a 3 section 3 schematic 3 diagram 3 of 3 the 3 underwater 3 hollowing 3 defect 3 repairing 3 device 3 of 3 the 3 navigation 3 wall 3 pile 3 foundation 3 of 3 the 3 ship 3 lock 3 on 3 the 3 gravel 3 layer 3 basis 3. 3
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the device for repairing the underwater hollowing defect of the navigation wall pile foundation of the ship lock on the gravel layer foundation comprises an impermeable concrete cast-in-place pile 1, a plain concrete pile 2, a concrete connecting beam 3, a planting bar 4 and a non-dispersed concrete filler 5. 1 row of impermeable concrete cast-in-place piles are arranged at the position of 2m upstream of the underwater hollowed defect of the navigation wall pile foundation, one row is arranged along the outer side line of the navigation wall, the impermeable concrete cast-in-place piles 1 are continuously cast into the wall, the 1 pile of the impermeable concrete cast-in-place pile is deeply embedded into the bedrock for 2-4 m, and the prevention of the seepage is realizedThe concrete seepage-proofing cast-in-place piles 1 are made of C30 concrete, the diameter of each pile is 100cm, and the distance between every two adjacent anti-seepage concrete cast-in-place piles 1 is 120 cm. Plain concrete piles 2 are poured between the anti-seepage concrete cast-in-place piles 1 to serve as water-stop curtains between the piles, the plain concrete piles 2 are deeply arranged into the bedrock for 1-2 m, the pile diameter of the plain concrete piles 2 is 60cm, and the distance between the plain concrete piles 2 is 120 cm. The pile top of the impermeable concrete cast-in-place pile 1 is provided with a concrete connecting beam 3, the joint of the navigation wall and the pile top connecting beam 3 is connected into a whole through embedded bars 4, the concrete connecting beam 3 is made of C30 concrete, the section size (width multiplied by height) is 2m multiplied by 1m, the outer diameter of the embedded bars 4 is 25mm, and the distance between the embedded bars 4 is 50 cm. The underwater hollowing defect of the navigation wall pile foundation adopts a mode of directly pouring without clearing foundation, C25 underwater undispersed concrete filler 5 is adopted for pouring and backfilling, the backfilling range is between the impermeable concrete cast-in-place pile 1 at one side of the navigation wall pile foundation and the steel sheet pile template 7 arranged at the other side, and the steel sheet pile template 7 arranged at the other side adopts a stone block 8 presser foot. The outer side of the pile top of the seepage-proof concrete filling pile 1 adopts an alloy net stone pocket 6 presser foot, and the stone loading capacity of a single net stone pocket is not less than 4m3The diameter of the stone block is not less than 50 cm.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the concept of the present invention, and these improvements and decorations should also be considered as the protection scope of the present invention.
Claims (9)
1. The utility model provides a ship lock navigation wall pile foundation's defect prosthetic devices that undercuts under water on gravel layer basis which characterized in that: the anti-seepage concrete cast-in-place pile comprises anti-seepage concrete cast-in-place piles, plain concrete piles, concrete connecting beams, embedded bars and non-dispersed concrete fillers, wherein the anti-seepage concrete cast-in-place piles are arranged 1.5-2.5 m in front of the water-facing surface of the outer side of an underwater hollowed defect of a navigation wall pile foundation, the anti-seepage concrete cast-in-place piles are continuously cast into a wall, the anti-seepage concrete cast-in-place piles deeply penetrate into a bed rock for 2-4 m, the plain concrete piles are cast between the anti-seepage concrete cast-in-place piles, the plain concrete pile piles deeply penetrate into the bed rock for 1-2 m, the concrete connecting beams are arranged at the tops of the anti-seepage concrete cast-in; the underwater hollowing defect of the navigation wall pile foundation is backfilled by pouring underwater undispersed concrete filler without clearing foundation, and the backfilling range is between the impermeable concrete cast-in-place pile at one side of the navigation wall pile foundation and the steel sheet pile template arranged at the other side of the navigation wall pile foundation.
2. The apparatus according to claim 1, wherein the apparatus for repairing the defect of underwater hollowing of the navigation wall pile foundation of the ship lock on the gravel layer basis is characterized in that: the outer side of the pile top of the impermeable concrete cast-in-place pile adopts an alloy net stone pocket presser foot.
3. The apparatus according to claim 1, wherein the apparatus for repairing the defect of underwater hollowing of the navigation wall pile foundation of the ship lock on the gravel layer basis is characterized in that: the seepage-proofing concrete cast-in-place piles are made of C30 concrete, the diameter of each pile is 100cm, and the distance between every two adjacent seepage-proofing concrete cast-in-place piles is 120 cm.
4. The apparatus according to claim 1, wherein the apparatus for repairing the defect of underwater hollowing of the navigation wall pile foundation of the ship lock on the gravel layer basis is characterized in that: the pile diameter of the plain concrete piles is 60cm, and the distance between the plain concrete piles is 120 cm.
5. The apparatus according to claim 1, wherein the apparatus for repairing the defect of underwater hollowing of the navigation wall pile foundation of the ship lock on the gravel layer basis is characterized in that: the concrete connecting beam is made of C30 concrete, and the width multiplied by the height of the section is 2m multiplied by 1 m.
6. The apparatus according to claim 1, wherein the apparatus for repairing the defect of underwater hollowing of the navigation wall pile foundation of the ship lock on the gravel layer basis is characterized in that: the external diameter of the planting bars is 25mm, and the distance between the planting bars is 50 cm.
7. The apparatus according to claim 1, wherein the apparatus for repairing the defect of underwater hollowing of the navigation wall pile foundation of the ship lock on the gravel layer basis is characterized in that: the non-dispersive concrete filler adopts C25 concrete.
8. The apparatus according to claim 1, wherein the apparatus for repairing the defect of underwater hollowing of the navigation wall pile foundation of the ship lock on the gravel layer basis is characterized in that: the steel sheet pile template arranged on the other side of the navigation wall pile foundation adopts an alloy string bag stone throwing presser foot.
9. The apparatus for repairing underwater hollowing defect of navigation wall pile foundation of ship lock on gravel layer basis as claimed in claim 2 or 8, wherein: the single stone containing capacity of the alloy net stone pocket is not less than 4m3The diameter of the stone block is not less than 50 cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921175532.3U CN210636421U (en) | 2019-07-25 | 2019-07-25 | Underwater hollowing defect repairing device for navigation wall pile foundation of ship lock on gravel layer foundation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921175532.3U CN210636421U (en) | 2019-07-25 | 2019-07-25 | Underwater hollowing defect repairing device for navigation wall pile foundation of ship lock on gravel layer foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468837A (en) * | 2019-07-25 | 2019-11-19 | 中国电建集团华东勘测设计研究院有限公司 | A kind of sandy gravel stratum basis upper lock guide wall pile foundation empties defect-restoration method therefor and device under water |
-
2019
- 2019-07-25 CN CN201921175532.3U patent/CN210636421U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468837A (en) * | 2019-07-25 | 2019-11-19 | 中国电建集团华东勘测设计研究院有限公司 | A kind of sandy gravel stratum basis upper lock guide wall pile foundation empties defect-restoration method therefor and device under water |
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