CN216515566U - Tension type single-point mooring combined anchorage structure based on spiral anchor - Google Patents
Tension type single-point mooring combined anchorage structure based on spiral anchor Download PDFInfo
- Publication number
- CN216515566U CN216515566U CN202123140903.4U CN202123140903U CN216515566U CN 216515566 U CN216515566 U CN 216515566U CN 202123140903 U CN202123140903 U CN 202123140903U CN 216515566 U CN216515566 U CN 216515566U
- Authority
- CN
- China
- Prior art keywords
- anchor
- spiral
- reserved
- anchorage
- reinforcing steel
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Nervous formula single point mooring makes up anchorage structure based on spiral anchor, the anchorage block is four prismatic table shapes, and block upper portion is equipped with one and is tied the anchor chain ring and be used for tying anchor chain, its characterized in that: the anchorage structure mainly comprises an anchorage block body, a reserved anchor hole anchoring reinforcing steel bar, a spiral anchor and reserved anchor hole concrete. The method is characterized in that: the anchorage block body has four screw anchor holes, and the screw anchor is beaten into and is reserved the interior concrete of anchor hole and make screw anchor and prefabricated block connect and form overall structure. And a grouting hole is reserved on the anchor rod for grouting so that soil around the anchor rod is solidified, and the anti-pulling bearing characteristic of the anchor rod is improved. The utility model relates to a tension type single-point mooring combined anchorage structure based on a spiral anchor, which reduces the volume of an anchorage block body and the excavated volume of earthwork by utilizing the spiral anchor structure, and overcomes the problems of large workload, high cost and great capability of not reducing adverse effects on the environment greatly in the prior art.
Description
Technical Field
The utility model relates to a novel anchorage block structure for a single-point tension type buoy mooring system, in particular to a combined anchorage block structure which utilizes the bearing characteristic of strong pulling resistance of a spiral anchor and can effectively reduce the concrete volume and the excavation amount of a foundation pit under the conditions of on-site transportation, hoisting and poor excavation conditions.
Background
In recent years, inland river water transportation development such as Yangtze river is a great amount of vitality of China's economy, channel improvement work is at hand in order to strengthen inland river shipping efficiency and improve service level, strengthen modernized development targets such as inland river shipping smoothness, safety, high efficiency, navigation comfort of shipmen and the like, an anchor land is used as an important component of a channel, and the problems existing in channel improvement can be greatly reduced by reasonably designing a partial structure form of the anchor land.
In the current engineering application, the commonly adopted anchor ground forms comprise a slope type anchor ground, a pile foundation frame pier type anchor ground, a gravity retaining wall type anchor ground, a sheet pile type anchor ground, a row pile type anchor ground and a floating pontoon anchor ground, the anchor ground forms are different, the project investment is higher in the early period, the maintenance workload is large, and the requirements of partial anchor ground forms on the aspects of the environment, the position, the geology and the like of the anchor ground are higher. For the anchor land at the downstream of the main stream of the Yangtze river, because of the limitation of the area of the water area, in order to reduce the influence on the main channel, a single-point tension type buoy mooring system is generally adopted, the system mainly comprises a buoy, a mooring ring, an underwater anchor chain and an anchor ingot, and external forces such as water flow, wind wave and the like borne by a ship during the ship berthing at the anchor land are transmitted to the anchor ingot through the buoy and the underwater anchor chain and finally borne by an anchor block. At present, when an anchorage block body is designed, in order to ensure that the anchorage block body does not lose stability and slide when a ship stops, the anchorage block body generally meets the bearing requirement by increasing dead weight or increasing the burial depth of the anchorage block body.
When the anchorage block bears by the dead weight, the anchorage block is generally designed into a large quadrangular frustum pyramid shape, the required volume of the anchorage block can be large for meeting the bearing requirement, the required concrete amount of the block can be correspondingly large, a large field is needed when large-volume concrete is prefabricated, on the other hand, the prefabricated anchorage block needs to be transported on land and transported on water to be installed on water in an anchorage area, a special land transport vehicle, a water transport ship and a water floating crane are needed, and the economic cost is rapidly increased along with the increase of the anchorage block.
When the bearing capacity of the anchorage block body is increased by increasing the burial depth, the total bearing capacity of the anchorage block body is improved mainly through the backfill soil weight above the anchorage block body, and the effect is also obvious. The method has two major defects, namely, the surface of the riverbed is generally poor in soil quality, the foundation pit excavation is generally positioned on a large (slow) side slope, the excavation engineering quantity of earth and rockfill is large, the underwater foundation pit on the river is influenced by water flow, the silt returning quantity in the excavation process is large, and the excavation quantity is further increased; secondly, the influence on the environment in the excavation process is not small or trivial, on one hand, the excavation process causes great damage to the ecological environment at the bottom of the riverbed in the engineering area, and on the other hand, the safety of fishes and plankton in the water area and the downstream water quality can be influenced.
In view of the above problems, it is therefore highly desirable to develop a novel anchorage block composite structure that can ensure the overall tensile pulling resistance of an anchorage block, effectively reduce the volume of the block, and reduce the excavation amount of a foundation pit.
Disclosure of Invention
The utility model provides a novel anchor block structure with spiral anchors arranged at four corners of an anchor block, aiming at the defects in the prior art, the novel anchor block structure adopts a composite foundation of the spiral anchors combined with the anchor block, and utilizes the advantage of strong pulling resistance of the spiral anchors to reduce the volume of concrete and the excavation amount of a foundation pit and simultaneously reduce the requirements of land transport vehicles, water transport ships and water floating cranes, thereby improving the economy and environmental protection of the engineering on the whole.
The utility model relates to a novel anchorage block combined structure for a single-point tension type buoy mooring system, in particular to a novel anchorage block combined structure which utilizes the good pulling-out resistance of a spiral anchor to reduce the volume of an anchorage block and reduce the environmental pollution in the construction process.
In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a nervous formula single point mooring makes up anchorage structure based on spiral anchor, this anchorage block be four prismatic table shapes, and block upper portion is equipped with one and is tied the hawse link and be used for tying the hawse, its characterized in that: and a spiral anchor hole is reserved in the anchorage block body.
In other words, the tension type single-point mooring combined anchorage structure provided by the utility model mainly comprises an anchorage block body, a reserved anchor hole anchoring reinforcing steel bar, a spiral anchor and reserved anchor hole concrete.
The four reserved anchor holes of the anchor block body are through holes with the same height as the anchor block body, the diameter of the through holes is about 0.5m, the through holes are symmetrically arranged inside the anchor block body, and the circle center is located at a position which is deviated from the four corner points of the top surface by 0.6m towards the transverse direction and the longitudinal direction of the inside of the anchor block body respectively by taking the four corner points as base points.
The anchor block body is a prefabricated reinforced concrete block body, anchor holes with the diameter of about 0.5m are symmetrically reserved at four corners and are used for driving (screwing) the prefabricated block into a spiral anchor after the prefabricated block sinks; 12 HPB335 anchoring steel bars with the length of 10cm and the diameter of 18mm are reserved on the periphery of the reserved anchor hole at intervals, the anchoring steel bars are arranged in 3 layers, and the steel bars are arranged at intervals and do not influence the driving (screwing) of spiral blades of the spiral anchor. The anchoring reinforcing steel bar is mainly used for increasing the connection between the spiral anchor and the prefabricated block body by the second-stage concrete in the reserved anchor hole after the spiral anchor is beaten (screwed), and the expanding agent is doped in the second-stage concrete, so that the concrete in the anchor hole and the anchorage block body form an integral structure.
The spiral anchor consists of an anchor rod and a spiral blade. The anchor rod is a hollow steel pipe, the length of the anchor rod is about 5m, and the diameter of the anchor rod is 8 cm; the lower part of the anchor rod is provided with 3 helical blades, the blades are carbon steel helical blades produced in a continuous cold rolling mode, the diameter of each blade is 0.4m, and the distance between every two blades is about 0.8-1.0 m; grouting holes are formed in a rod of 3.0m below the anchor rod, the grouting holes are arranged in a quincunx mode, the diameter of each grouting hole is 1-2 cm, the interlayer spacing of the grouting holes is 20-30 cm, soil around the spiral anchor can be solidified through grouting, and therefore the anti-pulling bearing characteristic of the spiral anchor is improved; and no grouting hole is arranged in the upper anchor rod and the anchor ingot within the same length range, and anchoring reinforcing steel bars are welded at intervals. The cavity of the anchor rod is used as a grouting pipeline for grouting the lower anchor rod.
The anchor rod upper portion and the equal height part of anchor ingot block body, the anchor reinforcing bar is 16 diameter 18 mm's HPB335 reinforcing bars of welding on the anchor rod, and the reinforcing bar length is 8~10cm, 4 layers are arranged in the branch, and the first layer arrangement mode is that 4 totally of mutually perpendicular arrangement on the horizontal plane, and the second floor arrangement mode is 45 jiaos of dislocation arrangement with the first layer partially for increase the cohesive force between the anchor rod and the second concrete in reserving the anchor hole. The third and fourth layers are arranged in the same manner as the first and second layers.
In detail, the device consists of an anchorage block body 1, a reserved anchor hole 2, a reserved anchor hole anchoring reinforcing steel bar 3, a spiral anchor 4 and reserved anchor hole concrete 5. The anchorage block body 1 is in a quadrangular frustum pyramid shape and is of a prefabricated concrete structure, 4 reserved anchor holes 2 with the diameter of 0.5m and the height consistent with the height of the anchorage block body are reserved at four corners of the block body, a reserved position is reserved for installing a spiral anchor, and an anchorage chain tying chain ring is arranged at the upper part of the block body and used for tying an anchorage chain; the anchoring reinforcing steel bars 3 are HPB335 anchoring reinforcing steel bars with the length of 10cm and the diameter of 18mm, the anchoring reinforcing steel bars are distributed in 3 layers, the first layer is located 0.45m below the top surface of the anchorage block 1, the interlayer spacing of the anchoring reinforcing steel bars is 0.5m, and the anchoring reinforcing steel bars are horizontally and uniformly distributed, so that concrete in the reserved anchor holes can be effectively combined with the anchorage block and the spiral anchors to jointly bear loads, and the shearing damage at the joint of different members is prevented.
The spiral anchor 4 comprises an upper anchor rod 41, an anchoring steel bar 42, a lower anchor rod 43, a grouting hole 44, a spiral blade 45 and an anchor rod tip 46, the spiral anchor 4 comprises a hollow steel pipe, the length of the hollow steel pipe is 5m, the length of the upper anchor rod 41 is 2m, the surface of the upper anchor rod is welded with the anchoring steel bar 42, 4 steel bars welded on the upper anchor rod 41 are horizontally and uniformly distributed on the anchoring steel bar 42, the length of the steel bar is 8-10 cm, and the model is an HPB335 steel bar with the diameter of 18 mm; the length of the lower anchor rod 43 is 3m, and a grouting hole 44 is formed in the surface of the lower anchor rod; the arrangement mode of the grouting holes 44 is quincunx arrangement, each layer is provided with four grouting holes, the diameter is 1-2 cm, the distance between grouting hole layers is 20-30 cm, and after the spiral anchor is installed and fixed, grout is conveyed through a cavity in the spiral anchor rod to grout soil around the spiral anchor, soil bodies loosened around the spiral anchor can be solidified, and therefore the anti-pulling bearing characteristic of the spiral anchor is improved; the spiral blades 45 are made of steel with the model number of Q345 and welded on the rod body of the lower anchor rod 43, 3 layers of blades are arranged together, and the distance between every two layers of blades is 0.8-1.0 m; the bolt point 46 is conical in shape and is combined with the bottom end of the lower bolt 43 for reducing resistance of the screw anchor during drilling.
And pouring the concrete 5 in the reserved anchor hole after the spiral anchor 4 is installed, and doping an expanding agent in the pouring process.
Compared with the prior art, the utility model has the beneficial effects that:
1. by adopting the structural form of combining the spiral anchor and the anchor block body, the volume of the anchor block body is reduced, the consumption of concrete is reduced, and after the spiral anchor structure is adopted, the burial depth of the anchor block body can be reduced, so that the excavation amount of earth and stone is reduced, and the construction work amount is greatly reduced;
2. the buried depth of the anchorage block body is reduced, so that the soil body excavation amount and the excavation range can be reduced, the influence on the environment is small, the adverse influence of excavation on the ecological environment at the bottom of a riverbed in an engineering area can be effectively reduced, and on the other hand, the adverse influence on the safety of fishes and planktons in the water area and the downstream water quality is also greatly reduced;
3. grouting holes are formed in the spiral anchor, and pressure grouting can enable soil around the anchor rod to be solidified, so that the anti-pulling property of the spiral anchor is improved, and the structural safety coefficient is increased;
4. the anchoring steel bars are arranged in the embedded holes, so that the overall anti-pulling performance of the device is greatly improved.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention in its entirety;
FIG. 2 is a top view of the apparatus of the present invention;
FIG. 3 is a top view of the anchoring steel bar with the reserved anchor hole;
FIG. 4 is a side view of the anchor of the device of the present invention;
fig. 5 is a detail view of the bolt tip.
Detailed Description
The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings:
When the device is assembled, the prefabricated anchor block body 1 is hoisted to a specific position, and is sunk to a fixed position through gravity, 4 layers of anchoring reinforcing steel bars 42 are welded on the upper part of the spiral anchor 4, and a grouting hole 44 is formed in the lower part of the anchor rod. Then drilling the screw anchor, and after the screw anchor is drilled to a fixed position, performing concrete grouting to solidify soil around the screw anchor 4; and after the spiral anchor 4 is installed and fixed, performing later-stage pouring of the underwater concrete 5 in the reserved anchor hole 2, and adding an expanding agent in the pouring process of the concrete 5 in the reserved anchor hole, so that the concrete 5 in the reserved anchor hole, the reserved anchor hole anchoring steel bar 3 and the anchoring steel bar 42 on the spiral anchor 4 are better bonded together, and the reserved anchor hole anchoring steel bar and the anchoring steel bar form a whole with the precast concrete.
Preferably, in the above technical solution, the installation sequence of the 4 anchor rods is clockwise.
Claims (6)
1. The utility model provides a tension formula single point mooring makes up anchorage structure based on spiral anchor which characterized in that: the anchorage structure mainly comprises an anchorage block body, a reserved anchor hole anchoring reinforcing steel bar, a spiral anchor and reserved anchor hole concrete; the spiral anchor consists of an upper anchor rod, an anchoring reinforcing steel bar, a lower anchor rod, a grouting hole, a spiral blade and an anchor rod tip.
2. The tension type single-point mooring combined anchorage structure based on the spiral anchor as claimed in claim 1, is characterized in that: the four reserved anchor holes are through holes with the height consistent with that of the anchor block body, the diameter is about 0.5m, the through holes are symmetrically arranged at the center of the anchor block body, the circle centers are located at positions which are respectively deviated from the inside of the anchor block body by 0.6m in the transverse direction and the longitudinal direction by taking four corner points of the top surface as base points, 12 HPB335 anchoring reinforcing steel bars with the length of 10cm and the diameter of 18mm are reserved at the periphery of the reserved anchor holes at intervals, and the anchoring reinforcing steel bars are arranged in 3 layers.
3. The tension type single-point mooring combined anchorage structure based on the spiral anchor as claimed in claim 1, is characterized in that: the anchor block concrete is divided into two parts, one part is a prefabricated block body, and the other part is poured after the prefabricated block sinks and is driven into the spiral anchor.
4. The tension type single-point mooring combined anchorage structure based on the spiral anchor as claimed in claim 1, 2 or 3, is characterized in that: the stock of spiral anchor is hollow steel pipe, divide into upper portion stock and lower part stock, and upper portion stock length is 2m, and lower part stock length is 3 m.
5. The tension type single-point mooring combined anchorage structure based on the spiral anchor as claimed in claim 4, is characterized in that: the upper anchor rod uses the cavity as a grouting pipeline, anchoring reinforcing steel bars are welded on the upper anchor rod, the anchoring reinforcing steel bars are 16 HPB335 reinforcing steel bars with the diameter of 18mm, the length of the reinforcing steel bars is 8-10 cm, the anchoring reinforcing steel bars are arranged in 4 layers, the first layer is formed by vertically arranging 4 reinforcing steel bars on the horizontal plane, and the second layer is arranged in a staggered manner with an angle deviating from 45 degrees with the first layer; the third and fourth layers are arranged in the same manner as the first and second layers.
6. The tension type single-point mooring combined anchorage structure based on the spiral anchor as claimed in claim 4, is characterized in that: 3 helical blade are established to the stock of lower part, and the blade interval is 0.8~1.0m, and the stock lower part is equipped with an stock pole point, and stock lower part pole is equipped with the grout hole, and the grout hole arrangement mode is plum blossom mold and arranges, and there are four grout holes on every layer, and the diameter is 1~2cm, and grout hole interlamellar interval is 20~30 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123140903.4U CN216515566U (en) | 2021-12-13 | 2021-12-13 | Tension type single-point mooring combined anchorage structure based on spiral anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123140903.4U CN216515566U (en) | 2021-12-13 | 2021-12-13 | Tension type single-point mooring combined anchorage structure based on spiral anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216515566U true CN216515566U (en) | 2022-05-13 |
Family
ID=81498576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123140903.4U Active CN216515566U (en) | 2021-12-13 | 2021-12-13 | Tension type single-point mooring combined anchorage structure based on spiral anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216515566U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922085A (en) * | 2022-06-09 | 2022-08-19 | 湖南科技大学 | Assembly type tunnel anchor system and construction method |
-
2021
- 2021-12-13 CN CN202123140903.4U patent/CN216515566U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114922085A (en) * | 2022-06-09 | 2022-08-19 | 湖南科技大学 | Assembly type tunnel anchor system and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108867684A (en) | Offshore wind turbine gravity caisson basis and its installation method | |
| CN103362113B (en) | Offshore wind farm, bridge and marine works local buoyancy ocean platform and construction method | |
| CN111254984B (en) | Pipe joint connecting structure of underwater cable-stayed suspension tunnel | |
| CN103321241A (en) | Deepwater open type wharf with combined foundation and method for constructing deepwater open type wharf | |
| WO2013044978A1 (en) | Method of building an offshore power storage facility and corresponding offshore power storage facility | |
| CN105908772B (en) | The construction method of offshore wind turbine gravity type foundation, basic system and gravity type foundation | |
| CN111424716B (en) | Oblique-pulling anchorage type suspension tunnel structure with relay extension of artificial island | |
| CN113653601A (en) | Semi-submersible floating type fan device and system | |
| CN114855865A (en) | Tensioning type fan foundation anchored on rock-based seabed and arrangement method | |
| CN216515566U (en) | Tension type single-point mooring combined anchorage structure based on spiral anchor | |
| CN102021901B (en) | Method for putting up steel pipe pile platform of abrupt slope bare rock | |
| CN208763050U (en) | Offshore wind turbine gravity caisson basis | |
| JP2012201218A (en) | Method for constructing offshore wind power generation facility | |
| CN201826292U (en) | Bare rock steel pipe pile platform in steep slopes under deep sea | |
| CN217870596U (en) | Tensioning type fan foundation anchored on foundation seabed | |
| CN115339581A (en) | Floating type reinforced concrete universal wind power foundation | |
| CN111485579B (en) | Bridge-tunnel transition conversion structure between suspension tunnel and deepwater suspension bridge | |
| JP5738642B2 (en) | Installation method of offshore wind power generation equipment | |
| CN213625440U (en) | Floating breakwater with anchoring system | |
| CN212294724U (en) | Equipment for prefabricating offshore wind power barrel type foundation at wharf front edge | |
| CN209958290U (en) | Take shore protection structure of pile foundation | |
| CN205776313U (en) | A kind of offshore wind farm doleiform gravity type foundation | |
| CN111042190A (en) | Torpedo anchor foundation containing grouting plate knot body and construction method thereof | |
| CN217146296U (en) | Anchorage block structure for single-point catenary buoy mooring system | |
| CN104908884B (en) | A kind of method of quick construction offshore floating man-made island |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |