CN111424718A - Artificial island structure for relay extension of suspended tunnel - Google Patents
Artificial island structure for relay extension of suspended tunnel Download PDFInfo
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- CN111424718A CN111424718A CN202010246095.0A CN202010246095A CN111424718A CN 111424718 A CN111424718 A CN 111424718A CN 202010246095 A CN202010246095 A CN 202010246095A CN 111424718 A CN111424718 A CN 111424718A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 239000004576 sand Substances 0.000 claims abstract description 43
- 239000000725 suspension Substances 0.000 claims abstract description 28
- 239000004575 stone Substances 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 5
- 238000007596 consolidation process Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 25
- 238000007667 floating Methods 0.000 description 8
- 238000009423 ventilation Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000005339 levitation Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
- E02D29/067—Floating tunnels; Submerged bridge-like tunnels, i.e. tunnels supported by piers or the like above the water-bed
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
- E02B3/066—Quays
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/18—Reclamation of land from water or marshes
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- Engineering & Computer Science (AREA)
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- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses an artificial island structure for relay extension of a suspension tunnel, which comprises an island base at the lower part and a vertical island body at the upper part; the island foundation is constructed by multiple layers of backfill sand, each layer of backfill sand is constructed in a cofferdam formed by submerging an ultra-large concrete buoyancy tank, and the peripheral dimension of each layer of cofferdam is gradually reduced upwards to enable the island foundation to be in a pyramid shape; the upper vertical island body consists of an island wall and an island inner body; the island wall is formed by a steel cylinder type lattice body and a dense filler inside the steel cylinder type lattice body, the steel cylinder type lattice body is formed by connecting a steel large cylinder main lattice and a straight-web type steel sheet pile auxiliary lattice, sand is backfilled and compacted in the steel large cylinder main lattice and the straight-web type steel sheet pile auxiliary lattice, and a broken stone cushion layer and a block stone cushion layer protecting surface are adopted within 1m of the inner distance from the top of the island wall; the island inner body is composed of back-filled sand. The artificial island structure has the characteristics of self stability and relatively small construction difficulty and engineering quantity, and can be used for relay extension of a suspension tunnel and marine anchorage of a guy cable.
Description
Technical Field
The invention relates to an underwater suspension tunnel, in particular to an artificial island structure for relay extension of a suspension tunnel.
Background
The underwater suspension Tunnel is called a 'focused Floating Tunnel' in English, and is called 'SFT' for short. Also known in italy as archimedes bridge. The differences between the underwater suspension tunnel and the traditional buried tunnel or tunneling tunnel are as follows: the suspended tunnel structure is surrounded by water and is neither located on nor traversing the ground, but is held in a fixed position primarily by the weight of its own structure, the buoyancy experienced by the structure, and the anchoring forces of the support system. The floating tunnel is sealed around, and the structure has all the characteristics of a common tunnel and is considered to be a tunnel rather than a bridge from the use point of view.
Although the suspension tunnel has certain advantages compared with the scheme of cross-sea passages such as immersed tube tunnels, deep-buried tunnels, bridges and the like, the design and construction of the suspension tunnel are still a worldwide problem, and no established suspension tunnel exists so far. Currently, there are mainly 7 countries (norway, italy, japan, china, swiss, brazil, usa) in the world under study, and many technical problems found by the study are mainly: overall structural arrangement, tunnel materials, anchoring system structural style, tunnel connection style and shore connection structural design, tunnel structure feasibility, construction and operation risks and the like. Whether the problems can be solved or not determines whether the suspension tunnel can be moved to actual engineering from a feasible scheme or not.
In the research on the floating tunnel, the proposed structural types can be roughly divided into three types according to the relationship between the self gravity of the floating tunnel and the received buoyancy: float type, anchor type, pier column type. The float-type suspension tunnel is formed by suspending the tunnel on a float bowl on the water surface through an anchor cable or an anchor chain, the gravity of the tunnel is greater than the buoyancy, and the vertical direction of the tunnel is greatly influenced by the fluctuation of the tide level; the anchoring type suspension tunnel is characterized in that the tunnel is anchored below a seabed on the basis of an anchorage through tension legs or anchor cables, the gravity of the tunnel is smaller than the buoyancy, and the tunnel can displace or shake under the action of hydrodynamic force; the pier column is actually a tunnel bridge supported on the underwater pier column, and the construction difficulty is high and the manufacturing cost is high. Because the tunnel floats in water, the tunnel installation construction is influenced by wind, waves, currents, ship traveling waves and the like, the underwater positioning, underwater or overwater butt joint construction difficulty of the three types of tunnels is very high, and the comfort level and the safety risk in the underwater operation period are difficult to predict.
For submarine tunnels, such as immersed tube tunnels, tunneling tunnels and suspension tunnels, if the tunnels are too long, ventilation and escape are critical problems which need to be solved, and ventilation shafts and other structures are generally required to be arranged. Because the tunnel is arranged under water with larger water depth, the structure for ventilation and escape has very long free length above the surface of the sea bed, is difficult to stabilize under the action of water flow, waves and the like, and has great construction difficulty, so the construction of the artificial island is the best choice at present. In addition, the artificial island can also be used as a transition shore base for tunnel extension in the sea or tunnel-bridge conversion. Due to the fact that the water depth is large, the artificial island structure is influenced by severe sea conditions such as wind, wave and current, and the construction difficulty is large.
Disclosure of Invention
The invention aims to fill the blank of the prior art and provide an artificial island structure for relay extension of a suspension tunnel, which has the characteristics of self stability and relatively small construction difficulty and engineering quantity, can be used for relay extension, tunnel bridge conversion and tunnel ventilation of the suspension tunnel, and can also be used as an underwater anchorage structure of a guy cable of the suspension tunnel.
The purpose of the invention is realized as follows: an artificial island structure for relay extension of a suspension tunnel comprises an island base at the lower part and an upright island body at the upper part; wherein the content of the first and second substances,
the plane of the island base is circular, oval or rhombus along the water flow, the island base is constructed by multiple layers of backfill sand, each layer of backfill sand is constructed in a cofferdam formed by submerging an ultra-large concrete buoyancy tank, and the peripheral dimension of each layer of cofferdam is 1: 1-1: 1.5, the gradient is gradually reduced upwards, so that the shape of the island base is pyramid;
the plane of the island body is circular, oval or rhombus along the water flow; the island body consists of an island wall and an island inner body; the island wall is formed by a steel cylinder type lattice body and a dense filler in the steel cylinder type lattice body, the steel cylinder type lattice body is formed by connecting a steel large cylinder main lattice and a straight-web type steel sheet pile auxiliary lattice, and the dense filler in the steel large cylinder main lattice and the straight-web type steel sheet pile auxiliary lattice is backfill sand; the protecting surfaces of a broken stone cushion layer and a block stone cushion layer are adopted within the range of 1m from the top inside the steel large-cylinder main grids and the straight-web type steel sheet pile auxiliary grids;
the island inner body is backfilled sand filled in the island wall, and the height of the filled top is required to meet the requirement of stability of the island wall.
The artificial island structure for suspending tunnel relay extension is characterized in that the height of each layer of backfill sand is not more than 10 m.
The artificial island structure for suspending tunnel relay extension is characterized in that the height of the buoyancy tank is not lower than that of a layer of backfill sand, and a longitudinal partition wall and a vertical partition wall are arranged in the buoyancy tank.
The artificial island structure for relay extension of the suspension tunnel is characterized in that the diameter of the steel large cylinder main lattice is 28-30 m, the net distance of the steel large cylinder main lattices is the outer diameter + the margin width of the suspension tunnel, and the margin width is 1-2 m; the arc radius of the straight web type steel sheet pile auxiliary lattice is smaller than the radius of the steel large cylinder main lattice, and the length of the straight web type steel sheet pile auxiliary lattice is smaller than the length of the steel large cylinder main lattice.
The artificial island structure for suspending tunnel relay extension is characterized in that the foundation of the island body is treated by a drainage consolidation method, namely, after backfilled sand is filled to the designed top elevation, a plastic drainage plate is arranged, the backfilled sand is subjected to preloading by adopting ultrahigh surcharge loading, and the backfilled sand is unloaded to the designed top elevation after settlement is stable.
The artificial island structure for suspending tunnel relay extension is characterized in that the island body further comprises a wave blocking wall arranged along the outer edge of the top surface of the island wall.
The artificial island structure for suspending tunnel relay extension has the following characteristics:
1) the artificial island has multiple purposes, can be used for relay extension, tunnel-bridge conversion and tunnel ventilation of a suspension tunnel, and can also be used as an in-sea anchorage structure of a guy cable of the suspension tunnel.
2) The artificial island is composed of an island base and a vertical island body and is in an inverted T shape, wherein the plane dimension of the vertical island body is the minimum dimension meeting the arrangement of a suspension tunnel connecting structure, and therefore the water blocking area of the artificial island can be reduced to the minimum.
3) The island foundation of the artificial island is constructed by filling sand and stone in the cofferdam formed by submerging the ultra-large concrete buoyancy tanks layer by layer, so that the problem that the cofferdam under deep water is difficult to construct can be solved.
4) The island base of the artificial island is of a layered structure, the dimension of the island base is gradually reduced layer by layer, the artificial island is of a pyramid shape, the problem of self stability of the artificial island in the sea is solved, the whole is broken into parts, and the construction of an underwater ultra-large structure is greatly facilitated.
5) The island wall of the vertical island body adopts a combined structure of the steel large cylinder and the straight web type steel sheet pile, so that a closed cofferdam can be quickly formed, and the influence of severe sea conditions on construction is reduced.
6) The island wall of the vertical island body is formed by connecting the steel large-cylinder main grids and the straight web type steel sheet pile auxiliary grids, so that the main grids and the auxiliary grids have the same depth of penetration, the stability of the island body is improved, the problem of water stop of the island wall is solved, and conditions are created for the construction of a suspended tunnel connection system in the island in a dry environment.
7) The height of the vertical island body of the artificial island is greatly smaller than the original water depth, so that the construction difficulty of the steel large cylinder main lattice and the straight web type steel sheet pile auxiliary lattice caused by the deep water condition is greatly reduced.
Drawings
FIG. 1 is a plan view of an artificial island structure for levitation tunnel relay extension of the present invention;
FIG. 2 is a longitudinal cross-sectional view of an artificial island structure for levitation tunnel relay extension of the present invention;
FIG. 3 is a longitudinal cross-sectional view of a buoyancy tank in an artificial island structure for suspending tunnel relay extensions of the present invention;
FIG. 4 is a partial plan view of an island wall in an artificial island structure for suspended tunnel relay extension of the present invention;
fig. 5 is a longitudinal cross-sectional view of an island wall in an artificial island structure for levitation tunnel relay extension of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 to 5, the cross section of the artificial island structure for suspending tunnel relay extension of the present invention is in an inverted T shape and includes an island base 10 at a lower portion and an island body at an upper portion.
The plane of the island base 10 is in a shape of a circle with a gap, an ellipse or a rhombus along the water flow so as to reduce the thrust of the water flow, and the island base 10 is divided into an island inner part and an island outer part; the part outside the island comprises a breakwater 13 and a harbor basin 14, and a gap is a port door of the harbor basin 14; the island foundation 10 is constructed by a plurality of layers of backfill sand 12, each layer of backfill sand 12 is constructed in a cofferdam 11 formed by submerging an ultra-large concrete buoyancy tank 110, and the height of each layer of backfill sand 12 is not more than 10 m; the height of the floating box 110 is not lower than that of the backfill sand 12, a longitudinal broken wall 111 and two vertical partition walls 112 are arranged in the floating box 110, and the longitudinal broken wall 111 is arranged at the half position of the width of the floating box 110; the peripheral dimension of each layer of cofferdam 11 is as follows: 1-1: the slope of 1.5 gradually decreases upward, so that the island base 10 has a pyramidal shape.
The island body is vertical and the plane is in a shape of a circle, an ellipse or a rhombus along the water flow so as to reduce the influence of waves and water flow; the island body is composed of an island wall 20, an island inner body 30 and a wave blocking wall 40; wherein the content of the first and second substances,
the top elevation of the island wall 20 is the highest tide level, the wave height and the surplus height; the island wall 20 is formed by a steel cylinder type lattice body and a dense filler inside the steel cylinder type lattice body, the steel cylinder type lattice body is formed by connecting a steel large cylinder main lattice 20a and a straight web type steel sheet pile auxiliary lattice 20b, the steel large cylinder main lattice 20a and the straight web type steel sheet pile auxiliary lattice 20b are inserted into a hard soil layer to a certain depth, the dense filler in the steel large cylinder main lattice 20a and the straight web type steel sheet pile auxiliary lattice 20b is backfilled sand 12 to form a stable soil-retaining island wall structure, and a gravel cushion layer and a block stone facing are adopted within the range of 1m from the top in the steel large cylinder main lattice 20a and the straight web type steel sheet pile auxiliary lattice 20 b; the diameter of the steel large cylinder main lattice 20a is 28 m-30 m, the net distance of the steel large cylinder main lattice 20a is the outer diameter of the suspension tunnel plus the margin width, and the margin width is 1-2 m and is equal to 14 m-15 m; the arc radius of the straight web type steel sheet pile auxiliary lattice 201b is slightly smaller than the radius of the steel large cylinder main lattice 20a, and the length of the straight web type steel sheet pile auxiliary lattice is smaller than the length of the steel large cylinder main lattice 20 a.
The island inner body 30 is the backfill sand 12 filled in the island wall 20, and the filling top height needs to meet the requirement of the stability of the island wall 20;
the wave-stopping wall 40 is provided along the outer edge of the top surface of the island wall 20.
The foundation of the island body is treated by adopting a drainage consolidation method, namely after the backfill sand 12 is filled to the designed top elevation, a plastic drainage plate is arranged, the ultrahigh loading backfill sand is adopted for prepressing, and the backfill sand is unloaded to the designed top elevation after the settlement is stable.
The artificial island structure for relay extension of the suspended tunnel has the advantages that the slide resistance, the inclination resistance and the overall stability checking calculation are required. In order to facilitate the construction of the steel cylinder of the island wall of the vertical island body, the top elevation of the island foundation 10 is 1-2 m higher than the top elevation of the suspended tunnel. A suspension tunnel channel is reserved on the upper portion of the island foundation 10, and when the artificial island is constructed, a removable temporary box body is used for blocking the suspension tunnel channel.
The island body adopts the cylinder island wall, is convenient for on the one hand to be connected with suspension tunnel 1, and on the other hand is convenient for marine rapid prototyping, reduces the restriction of abominable sea state to the construction. The cylinder type island wall is a soil retaining structure formed by backfilling sand in a circular grid body formed by connecting the steel large cylinder main grid and the straight web type steel sheet pile auxiliary grid, performing foundation treatment and packing compaction treatment, and the straight web type steel sheet pile auxiliary grid is adopted to enable the soil penetration depth of the large cylinder main grid and the large cylinder auxiliary grid to be the same. The design of the cylindrical island wall needs to carry out the checking calculation of skid resistance, inclination resistance, spiral shearing and overall stability.
The invention relates to an artificial island structure for relay extension of a suspension tunnel, which has the following general construction process: cofferdam construction of an island foundation → sand blowing and filling in the cofferdam of the island foundation → barrel construction of the island wall → sand backfill and foundation treatment in the barrel of the island wall → sand backfill and foundation treatment in the island interior → construction of the structure in the island.
The cofferdam construction method of the island foundation comprises the following steps: the cofferdam buoyancy tank of the island base is prefabricated in a dock in blocks, assembled on the near-shore water surface, integrally transported to the site by floating by adopting a plurality of high-power tugboats, and integrally submerged and installed after dynamic positioning.
The sand blowing and filling method in the island-based cofferdam comprises the following steps: carrying out hydraulic filling construction by adopting a cutter suction dredger or an suction dredger;
the construction method of the island wall cylinder comprises the following steps: manufacturing a steel large cylinder main lattice in a land steel structure processing plant, transporting the steel large cylinder main lattice to the site by using a special transport ship, and then sinking the steel large cylinder main lattice by using a large crane ship and a vibration hammer set; the method comprises the following steps of (1) transporting assembled and straight-web type steel sheet pile auxiliary grids by using a special transport ship, after the assembled and straight-web type steel sheet pile auxiliary grids are transported to the site, firstly adopting a large-scale crane ship and a vibration hammer to integrally vibrate and sink the auxiliary grids to assemble a pre-assembly part, and then adopting a single vibration hammer to vibrate and sink the straight-web type steel sheet piles one by one to a designed elevation;
the method for processing backfill sand and foundation in the cylinder body of the island wall comprises the following steps: sand is backfilled in the steel large cylinder main grid and the straight web type steel sheet pile auxiliary grid by adopting a belt boat; punching a plastic drainage plate in a cylinder body of the island wall by adopting a plate inserting machine, and then prepressing by adopting ultrahigh surcharge sand;
the backfill sand and foundation treatment method of the island inner body comprises the following steps: adopting a cutter suction type dredger or an suction type dredger to carry out back-filling sand construction of an island inner body; punching a plastic drainage plate in the island body by adopting a plate inserting machine, and then prepressing by adopting ultrahigh surcharge sand;
and (3) construction of an island structure: after the foundation of the island inner body is consolidated and settled stably.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (6)
1. An artificial island structure for relay extension of a suspension tunnel comprises an island base at the lower part and an upright island body at the upper part; it is characterized in that the preparation method is characterized in that,
the plane of the island base is circular, oval or rhombus along the water flow, the island base is constructed by multiple layers of backfill sand, each layer of backfill sand is constructed in a cofferdam formed by submerging an ultra-large concrete buoyancy tank, and the peripheral dimension of each layer of cofferdam is 1: 1-1: 1.5, the gradient is gradually reduced upwards, so that the shape of the island base is pyramid;
the plane of the island body is circular, oval or rhombus along the water flow; the island body consists of an island wall and an island inner body; the island wall is formed by a steel cylinder type lattice body and a dense filler in the steel cylinder type lattice body, the steel cylinder type lattice body is formed by connecting a steel large cylinder main lattice and a straight-web type steel sheet pile auxiliary lattice, and the dense filler in the steel large cylinder main lattice and the straight-web type steel sheet pile auxiliary lattice is backfill sand; the protecting surfaces of a broken stone cushion layer and a block stone cushion layer are adopted within the range of 1m from the top inside the steel large-cylinder main grids and the straight-web type steel sheet pile auxiliary grids;
the island inner body is backfilled sand filled in the island wall, and the height of the filled top is required to meet the requirement of stability of the island wall.
2. The artificial island structure for suspending tunnel relay extensions according to claim 1, wherein the height of each layer of backfill sand is no greater than 10 m.
3. The artificial island structure for suspending tunnel relay extension according to claim 1, wherein the height of the buoyancy tank is not lower than the height of one layer of backfill sand, and a longitudinal partition wall and a vertical partition wall are arranged in the buoyancy tank.
4. The artificial island structure for suspending tunnel relay extension according to claim 1, wherein the diameter of the steel large cylinder main lattices is 28-30 m, the clear distance of the steel large cylinder main lattices is the outer diameter + the margin width of the suspending tunnel, and the margin width is 1-2 m; the arc radius of the straight web type steel sheet pile auxiliary lattice is smaller than the radius of the steel large cylinder main lattice, and the length of the straight web type steel sheet pile auxiliary lattice is smaller than the length of the steel large cylinder main lattice.
5. The artificial island structure for suspending tunnel relay extension according to claim 1, wherein the foundation of the island body is treated by a drainage consolidation method, namely after backfilled sand is filled to a designed top elevation, a plastic drainage plate is arranged, the backfilled sand is pre-pressed by ultrahigh loading, and the backfilled sand is unloaded to the designed top elevation after settlement is stable.
6. The artificial island structure for suspending tunnel relay extensions according to claim 1 or 5, wherein the island body further comprises a wave wall along the outer edge of the top surface of the island wall.
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| CN202010246095.0A CN111424718B (en) | 2020-03-31 | 2020-03-31 | Artificial island structure for relay extension of suspended tunnel |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2535443Y (en) * | 2002-03-22 | 2003-02-12 | 大港油田集团有限责任公司钻采工艺技术开发服务中心 | Stee-frame cofferdam type artificial island |
| JP2003129445A (en) * | 2001-10-25 | 2003-05-08 | Toshio Nakamura | Inverted trapezoidal statically indeterminate reclining type retaining wall structure |
| CN101581086A (en) * | 2009-06-12 | 2009-11-18 | 中交二航局第三工程有限公司 | Positioning riprapping method for constructing island breakwater of artificial island |
| CN104652392B (en) * | 2014-12-22 | 2017-03-29 | 中交第三航务工程局有限公司 | A kind of lattice steel sheet pile large cylinder nominative cylinder position is assembled, multi-functional tooling bracket of doing Kongfu |
| CN109024525A (en) * | 2018-08-09 | 2018-12-18 | 海南大学 | A kind of artificial island structure and its construction method considering underground space development |
-
2020
- 2020-03-31 CN CN202010246095.0A patent/CN111424718B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003129445A (en) * | 2001-10-25 | 2003-05-08 | Toshio Nakamura | Inverted trapezoidal statically indeterminate reclining type retaining wall structure |
| CN2535443Y (en) * | 2002-03-22 | 2003-02-12 | 大港油田集团有限责任公司钻采工艺技术开发服务中心 | Stee-frame cofferdam type artificial island |
| CN101581086A (en) * | 2009-06-12 | 2009-11-18 | 中交二航局第三工程有限公司 | Positioning riprapping method for constructing island breakwater of artificial island |
| CN104652392B (en) * | 2014-12-22 | 2017-03-29 | 中交第三航务工程局有限公司 | A kind of lattice steel sheet pile large cylinder nominative cylinder position is assembled, multi-functional tooling bracket of doing Kongfu |
| CN109024525A (en) * | 2018-08-09 | 2018-12-18 | 海南大学 | A kind of artificial island structure and its construction method considering underground space development |
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