CN212405080U - Ship lock extension supporting construction - Google Patents
Ship lock extension supporting construction Download PDFInfo
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- CN212405080U CN212405080U CN202020826281.7U CN202020826281U CN212405080U CN 212405080 U CN212405080 U CN 212405080U CN 202020826281 U CN202020826281 U CN 202020826281U CN 212405080 U CN212405080 U CN 212405080U
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- ship lock
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers
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Abstract
The utility model discloses a ship lock extension supporting structure, which comprises a lock chamber wall and a group of water stop row piles continuously arranged along the downstream direction on the lock chamber wall; the water-stopping row piles are arranged along the upstream end of the lock chamber wall to the downstream end of the lock chamber wall; and transverse seepage-proof lines are respectively arranged between the upstream end and the downstream end of the lock chamber wall and the water-stopping row piles at corresponding positions, and the transverse seepage-proof lines, the water-stopping row piles and the existing ship lock enclose a closed water storage area. The utility model discloses can guarantee that the lock room wall of current ship lock's stability, control its deformation, ensure its normal work, still can show the clear distance that shortens current ship lock and extension ship lock, practice thrift with land, reduce to symbolize tear open, improve the mouth door district rivers condition, reduce the engineering investment, will expand the construction influence of ship lock to current ship lock and reduce to minimum.
Description
Technical Field
The utility model relates to a water conservancy project technical field, concretely relates to ship lock enlargement supporting construction and ship lock enlargement method.
Background
A ship lock is a hydraulic structure for ships to pass through a hydro-junction. When the ship moves upwards, the water level of the lock chamber of the ship lock is discharged to the water level of the downstream, the lower gate is opened, the ship lock enters the lock chamber of the ship lock, the lower gate is closed, water is filled into the lock chamber from the upstream to the water level of the upstream, the upper gate is opened, and the ship leaves the lock chamber and enters the upstream channel. And the reverse is true when the ship descends. In order to ensure that the water in the lock chamber of the ship lock does not leak, water stops are arranged in structural joints among structural sections of the lock chamber wall. For the separated type lock chamber structure, in order to ensure that the bottom of the lock chamber wall does not leak, an impervious curtain is arranged at the bottom of the lock chamber wall. The groundwater level behind the chamber wall is generally in line with the downstream water level.
The nationwide river water transport development planning plans a high-grade channel of two longitudinal lines, one transverse line and eighteen transverse lines. The large size of ships and the increasing demand for water transportation demand require the expansion of ship locks based on existing ship locks. The existing hydro-junction generally does not reserve the position of the extended ship lock, and the extended ship lock is usually arranged on the bank side of the existing ship lock. The more toward bank side of enlargement ship lock arranges, the more big is excavated volume of earth and stone side and sign volume of tearing open, takes up an area of more, and ship lock approach channel is big with main channel contained angle, and the gate district water flow condition is poor more. Therefore, the extension ship lock is arranged as close as possible to the existing ship lock on the premise of ensuring the safety of the existing ship lock building.
Generally, existing ship lock buildings adjacent to an extended ship lock pit have a lock head, a lock chamber, and a navigation wall. The brake head is of an integral structure, the bottom width is large, and the integral stability is good. The water level around the navigation wall is flush, and after the soil body is unloaded behind the wall, the stability of wall body self is guaranteed, only need study the overall stability of the soil body cofferdam behind the wall body. The stability and safety of the chamber structure are complicated. The large ship lock chamber is usually of a separated structure, the water level in the lock chamber frequently changes between the upstream water level and the downstream water level, and the requirements on the stability and deformation of the lock chamber wall are high. In order to ensure that the lock chamber of the ship lock is not seeped, water stopping is arranged between the lock chamber wall structure sections, and an impervious curtain is arranged at the bottom of the front toe of the lock wall. The lock chamber wall structure directly bears water pressure, after the soil body behind the wall is unloaded, the soil pressure behind the wall is reduced, and the lock chamber structure has the trend of moving or toppling over behind the wall. Once displaced, this can lead to the destruction of the water stop or impervious curtain of the chamber wall. It can be seen that the existing lock chamber structure is very sensitive to displacement. The conventional row pile supporting structure has low rigidity, allows large deformation and is not very effective in controlling the displacement of the existing structure. Therefore, in the current domestic expansion lock engineering, in order to maintain the earth pressure behind the existing lock chamber wall as much as possible and reduce the displacement, the axial distance between the expansion lock and the existing lock is generally 80-100 m, and the clear distance between the lock buildings is more than 50 m.
When the requirement for clear distance between the extended lock and the existing lock chamber wall is smaller and the existing lock chamber wall has a tendency to move backwards, the research on a feasible supporting structure and a construction mode becomes a technical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is overcome the not enough of prior art existence, provide a ship lock extension supporting construction, this ship lock extension supporting construction can have the stability of ship lock room wall and shift, under the prerequisite of guaranteeing that current ship lock is normal, safe work, can show the clear distance that shortens extension ship lock supporting construction and current ship lock structure to practice thrift the land used, reduce to sign and tear open, improve the orogate district water flow condition, reduce the engineering investment.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a ship lock extension supporting structure comprises a lock chamber wall and a group of water-stopping row piles continuously arranged along the downstream direction of the lock chamber wall; the water-stopping row piles are arranged along the upstream end of the lock chamber wall to the downstream end of the lock chamber wall; and transverse seepage-proof lines are respectively arranged between the upstream end and the downstream end of the lock chamber wall and the water-stopping row piles at corresponding positions, and the transverse seepage-proof lines, the water-stopping row piles and the existing ship lock enclose a closed water storage area.
The design idea of the technical scheme is that a water storage area is arranged on one side of the water stop row piles, water can be injected into the water storage area when a foundation pit is excavated in construction, the underground water level of the water storage area is higher than that of the existing ship lock in the prior operation, and the water pressure behind the lock chamber wall of the existing ship lock is increased, so that the soil pressure behind the wall reduced due to the excavation of soil at the position of the extended ship lock or the deformation of the water stop row piles is offset, the stress working condition of the lock chamber wall of the existing ship lock is ensured within a certain variation range, the displacement of the lock chamber wall is controlled within an allowable range, the safety and the effectiveness of water stop or an anti-seepage curtain of the existing ship lock are further ensured, and the existing ship lock can still normally operate and use in the construction process of the extended; meanwhile, the clear distance between the extended ship lock structure and the existing ship lock structure can be shortened, the land can be saved, the sign and disassembly can be reduced, the water flow condition of the port area can be improved, and the engineering investment can be reduced.
As a further improvement of the above technical solution:
the bottom of the water-stopping row pile extends into the relative impermeable layer; the top of the water-stopping row piles is higher than the downstream water level and lower than the upstream water level. The soil body behind the existing lock chamber wall of the ship lock is unloaded, the soil pressure is reduced, but the soil pressure in front of the wall always exists, so the underground water level of the water storage area is not higher than the upstream water level of the ship lock. Before the foundation pit of the ship lock is expanded and built, the underground water level of the water storage area is consistent with the downstream water level of the ship lock, the foundation pit is excavated, soil body is unloaded behind the wall, and the row piles are deformed.
More than one inspection well which is vertically arranged is arranged in the water storage area. Through setting up the inspection shaft in the water storage area, the groundwater level of water storage area is surveyd to the accessible inspection shaft to the accurate control water storage area is to the pressure of the lock chamber wall of current ship lock, still can irrigate and draw water in the water storage area through the inspection shaft, improves the convenience to the control of water storage area groundwater level.
And a displacement observation point is arranged at the top of the water-stopping row pile. The displacement condition of the supporting structure can be observed through the displacement observation point, and a basis is provided for a targeted adjustment measure.
And a water drainage pipe is arranged at the bottom of the water storage area, and an outlet of the water drainage pipe is communicated with a downstream river channel.
The top of stagnant water campshed is provided with the cap roof beam, the cap roof beam is connected with ground through a supporting component. Through setting up cap roof beam and supporting component, can reduce the displacement and the deformation of stagnant water campshed to guarantee the stagnant water campshed to the support of the interior soil body of water storage area, and then guarantee the stability and the safety of current ship lock structure.
One side of the water-stopping row pile, which is close to the water storage area, is provided with a jet grouting pile so as to realize water stopping and seepage prevention.
One side of the transverse seepage-proofing line close to the water storage area is provided with a jet grouting pile or a seepage-proofing curtain so as to realize water stopping and seepage proofing.
The minimum clear distance between the ship lock extension supporting structure and the lock chamber wall is 5 m. Through the optimization to supporting construction, the utility model discloses can be as near as possible with ship lock extension supporting construction setting near current ship lock structure, can show the using wisely ground, reduce to sign and tear open, improve the mouth door district water flow condition and reduce the engineering investment.
Compared with the prior art, the utility model has the advantages of: the utility model adjusts and optimizes the supporting structure used when the ship lock is expanded, a water storage area is arranged between the prior ship lock and the expanded ship lock construction position, and the water pressure is provided for the lock chamber wall of the prior ship lock by adjusting the height of the underground water level of the water storage area according to the stress condition of the lock chamber wall of the prior ship lock under different conditions in the construction process, thereby ensuring the stability of the prior ship lock and controlling the deformation of the prior ship lock; meanwhile, on the premise of ensuring normal and safe operation of the existing ship lock, the clear distance between the extended ship lock supporting structure and the existing ship lock structure can be obviously shortened, so that the land is saved, the sign and disassembly are reduced, the water flow condition of a port door area is improved, and the engineering investment is reduced.
Drawings
FIG. 1 is a schematic top view of the structure of embodiment 1;
FIG. 2 is a schematic cross-sectional view of the structure of example 1.
Illustration of the drawings:
1. water stopping and pile arranging; 2. an upper brake head; 3. a gate head is set; 4. a transverse seepage-proofing line; 5. a water storage area; 6. an inspection well; 7. a drain pipe; 8. a cap beam; 9. a support assembly; 10. carrying out jet grouting pile; 11. a lock chamber; 12. a lock chamber wall; 13. a mid-floor; 14. an impervious curtain; 15. stopping water by using the red copper sheet; 16. and (5) expanding the lock chamber wall of the ship lock.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
Example 1:
as shown in fig. 1 and 2, the ship lock extension supporting structure of the present embodiment includes a group of water stop campshed 1 continuously arranged in the upstream and downstream directions of the existing ship lock; the existing ship lock comprises a lock chamber 11, an upper lock bow 2 and a lower lock bow 3 which are respectively positioned at the upstream end and the downstream end of the lock chamber 11, and the water-stopping row piles 1 are arranged to the lower lock bow 3 of the existing ship lock along the upper lock bow 2 of the existing ship lock; a transverse seepage-proof line 4 is arranged between the water-stopping row piles 1 positioned at the two ends of the upper and lower reaches and the upper lock head 2 and the lower lock head 3 of the existing ship lock, and the transverse seepage-proof line 4, the water-stopping row piles 1 and the existing ship lock enclose a closed water storage area 5.
In this embodiment, the lock chamber 11 is a separate structure, and is composed of two lock chamber walls 12 and a middle bottom plate 13, and a deformation joint is arranged between the lock chamber walls 12 and the middle bottom plate 13. The impervious curtain 14 is arranged at the bottom of the front toe of the chamber wall 12. And red copper sheet water stops 15 are arranged between the structural seams of the lock chamber wall 12. The impervious curtain 14 and the red copper sheet seal 15 separate the water in the chamber 11 from the ground water behind the chamber walls 12.
In this embodiment, in order to reduce the sign-off, save the land and improve the water flow conditions in the port area, the clear distance between the extended lock chamber wall 16 and the lock chamber wall 12 of the existing lock is 10m according to the general plane layout of the extended lock.
In the embodiment, the bottom of the water-stopping row pile 1 extends into a relatively impermeable layer; the top of the water-stopping campshed 1 is higher than the downstream water level of the existing ship lock and lower than the upstream water level of the existing ship lock.
In this embodiment, more than one vertically arranged inspection well 6 is provided in the water storage area 5 for irrigation and drainage, and controlling and monitoring the groundwater level thereof.
In this embodiment, the bottom of the water storage area 5 is provided with a water discharge pipe 7, the outlet of the water discharge pipe 7 leads to a downstream river channel, and the underground water level behind the lock chamber wall 12 is basically consistent with the downstream water level.
In this embodiment, the top of stagnant water campshed 1 is provided with cap beam 8, and it establishes supporting component 9 to face extension lock foundation ditch side, and supporting component 9 is the steel pipe bearing diagonal, and its upper portion is connected with campshed cap beam 8, and the lower part supports the lithology slope at extension lock chamber wall 16 bottom plate foundation ditch.
In this embodiment, one side that stagnant water campshed 1 is close to impoundment area 5 is provided with spout stake 10 soon to realize stagnant water prevention of seepage, ensure stagnant water campshed 1 and spout stake 10 soon's stagnant water effect after the foundation ditch excavation.
In the embodiment, one side of the transverse seepage-proofing line 4 close to the water storage area 5 is provided with a jet grouting pile 10 or a seepage-proofing curtain 14 so as to realize water stopping and seepage proofing.
In this embodiment, the lock chamber wall 12 and the top of the water-stop row pile 1 of the existing ship lock are provided with displacement monitoring points to monitor the structural displacement in the construction process.
The ship lock extension method of the embodiment uses the ship lock extension supporting structure for supporting construction, and specifically comprises the following steps:
(1) under the control working condition that a foundation pit is excavated to the bottom and the water level in a lock chamber 11 is the upstream water level, drawing up the underground water level of a proper water storage area 5, establishing a model of a structure and a soil body for a lock chamber wall 12 and a water-stopping row pile 1 structure of the existing ship lock and a soil body CDEFA between the structures, calculating and analyzing the displacement of the lock chamber wall 12 and the water-stopping row pile 1 of the existing ship lock, and determining the structural scheme of controlling the high water level, the pile foundation construction platform elevation, the water-stopping row pile 1 and a steel pipe inclined support (support component 9) of the water storage area 5; under each working condition of excavation of the extension ship lock foundation pit and pouring and backfilling of a lock chamber wall 16 of the extension ship lock, drawing up an appropriate underground water level of the water storage area 5, checking the stability of a lock chamber wall 12 of the existing ship lock towards the side of the lock chamber 11 when the downstream water level is in the lock chamber 11, calculating the stress of the front toe of the lock chamber wall 12 of the existing ship lock when the upstream water level is in the lock chamber 11, and determining the process control water level of the water storage area 5;
(2) excavating a foundation pit along the CDE to a pile foundation construction platform, and constructing a pouring water-stopping row pile 1, a jet grouting pile 10, a cap beam 8 and a transverse seepage-proofing line 4 to form a water storage area 5;
(3) continuously excavating a foundation pit, installing a steel pipe inclined support (a support component 9), excavating earthwork at the lower part of the steel pipe inclined support, monitoring the displacement of the top of the lock chamber wall 12 of the existing ship lock, gradually filling water into the inspection well 6 of the water storage area 5, keeping the displacement of the top of the lock chamber wall 12 to be minimum as far as possible until the foundation pit is excavated to the bottom, and lifting the underground water level of the water storage area 5 to a high water level;
(4) pouring an extension lock chamber wall 16 and backfilling soil behind the wall, monitoring the top displacement of a lock chamber wall 12 of the existing lock, gradually pumping water from an inspection well 6 of the water storage area 5 until the extension lock is constructed and backfilled to the top, and reducing the underground water level of the water storage area 5 to the downstream water level of the lock;
(5) and a transverse seepage-proofing line 4 at the lower lock head 3 of the existing ship lock is broken by adopting drilling and other modes, so that the underground water level of the water storage area 5 is communicated with the downstream water level of the ship lock.
In this embodiment, the reservoir 5 is controlled to have a high water level of 45.5m, higher than the downstream water level (40.0m), and lower than the upstream water level (50.0 m).
In this embodiment, the elevation of the pile foundation construction platform is 46.5 m.
In this embodiment, when determining the groundwater level of the impounded area 5, it is necessary to consider the alternation of the water level in the existing lock chamber between the upstream and downstream water levels when the ship passes through the lock, and the water pressure in front of the wall of the existing lock chamber is in the process of changing constantly. Generally, the difference between the upstream and downstream water levels is 10m to 15m, and the difference is changed once every 1 hour. The expansion of the foundation pit excavation of the ship lock and the construction of the building are also dynamic processes, the stress and deformation of the row pile supporting structure are changed along with the dynamic processes, and the soil pressure behind the lock chamber wall of the existing ship lock is also changed along with the dynamic processes. Generally speaking, the foundation pit is excavated to the bottom for 200-300 days, and the building is constructed to the top for 300-600 days. When the ship lock is constructed, the deeper the foundation pit is, the larger the deformation of the row piles is, the more the soil pressure unloaded behind the existing ship lock chamber wall is, and the more the underground water level of the water storage area is lifted; conversely, it is preferably decreased. Meanwhile, the deeper the foundation pit is, the larger the height of the row pile soil retaining and water is, and the larger the row pile internal force is. The control working condition of controlling the high water level and the pile arrangement structural strength in the water storage area is to expand the foundation pit of the ship lock to be excavated to the bottom. At the initial stage of foundation pit excavation and after the construction and backfilling of the lock chamber wall of the extension ship lock are carried out to a certain height, the soil pressure behind the lock chamber wall of the existing ship lock is not changed greatly compared with that before the construction. If the water level is controlled after the wall is maintained, when the water level in the lock chamber is the downstream water level, the horizontal water pressure and the overturning moment towards the lock chamber side are increased by the existing lock chamber wall, so that the stability of the existing lock chamber wall is not favorable. Therefore, the water level of the water storage area is increased from the downstream water level to the controlled high water level along with the excavation of the foundation pit of the extended ship lock and the pouring and backfilling of the lock chamber wall, and then the water level is reduced to the downstream water level.
The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments. For those skilled in the art, the modifications and changes obtained without departing from the technical idea of the present invention shall be considered as the protection scope of the present invention.
Claims (8)
1. The ship lock extension supporting structure is characterized by comprising a lock chamber wall (12) and a group of water stop row piles (1) which are continuously arranged along the upstream direction and the downstream direction of the lock chamber wall (12); the water-stopping campshed (1) is arranged along the upstream end of the lock chamber wall (12) to the downstream end of the lock chamber wall (12); the water-stopping water drainage pile is characterized in that transverse seepage-proofing lines (4) are respectively arranged between the upstream end and the downstream end of the lock chamber wall (12) and the water-stopping drainage piles (1), and the transverse seepage-proofing lines (4), the water-stopping drainage piles (1) and the existing ship lock enclose a closed water storage area (5).
2. The ship lock extension support structure of claim 1, wherein the bottom of the water-stop piling bar (1) penetrates into a relatively impermeable layer; the top of the water-stopping row pile (1) is higher than the downstream water level of the ship lock and lower than the upstream water level of the ship lock.
3. Ship lock extension support structure according to claim 1, characterized in that more than one vertically arranged inspection shaft (6) is arranged in the impoundment area (5).
4. The ship lock extension support structure of claim 1, characterized in that the impoundment area (5) is provided at its bottom with a drain pipe (7), the outlet of the drain pipe (7) leading to a downstream waterway.
5. Ship lock extension support structure according to any of claims 1-4, characterized in that the top of the water stop piling (1) is provided with a cap beam (8), which cap beam (8) is connected to the ground by means of a support assembly (9).
6. Ship lock extension support structure according to any of claims 1-4, characterized in that the side of the waterstop campshed (1) close to the impoundment area (5) is provided with a jet grouting pile (10).
7. Ship lock extension support structure according to any of claims 1-4, characterized in that the side of the transverse seepage-proofing line (4) close to the impoundment area (5) is provided with a jet grouting pile (10) or a seepage-proofing curtain (14).
8. Ship lock extension support according to any of claims 1-4, characterized in that the clear distance between the ship lock extension support and the lock chamber wall (12) is a minimum of 5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020826281.7U CN212405080U (en) | 2020-05-18 | 2020-05-18 | Ship lock extension supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020826281.7U CN212405080U (en) | 2020-05-18 | 2020-05-18 | Ship lock extension supporting construction |
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| CN212405080U true CN212405080U (en) | 2021-01-26 |
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| CN202020826281.7U Active CN212405080U (en) | 2020-05-18 | 2020-05-18 | Ship lock extension supporting construction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424627A (en) * | 2020-05-18 | 2020-07-17 | 湖南省交通规划勘察设计院有限公司 | Ship lock extension supporting structure and ship lock extension method |
| CN115324017A (en) * | 2022-08-31 | 2022-11-11 | 湖南省水运建设投资集团有限公司 | Construction method for rebuilding navigation wall section of ship lock on basis of original ship lock |
-
2020
- 2020-05-18 CN CN202020826281.7U patent/CN212405080U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424627A (en) * | 2020-05-18 | 2020-07-17 | 湖南省交通规划勘察设计院有限公司 | Ship lock extension supporting structure and ship lock extension method |
| CN115324017A (en) * | 2022-08-31 | 2022-11-11 | 湖南省水运建设投资集团有限公司 | Construction method for rebuilding navigation wall section of ship lock on basis of original ship lock |
| CN115324017B (en) * | 2022-08-31 | 2024-03-19 | 湖南省水运建设投资集团有限公司 | Construction method for rebuilding navigation wall section of ship lock on basis of original ship lock |
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