CN113136889A - Construction method of offshore box type prefabricated bearing platform - Google Patents
Construction method of offshore box type prefabricated bearing platform Download PDFInfo
- Publication number
- CN113136889A CN113136889A CN202110341984.XA CN202110341984A CN113136889A CN 113136889 A CN113136889 A CN 113136889A CN 202110341984 A CN202110341984 A CN 202110341984A CN 113136889 A CN113136889 A CN 113136889A
- Authority
- CN
- China
- Prior art keywords
- bearing platform
- prefabricated bearing
- bottom sealing
- box
- sealing concrete
- 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.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
- Revetment (AREA)
Abstract
The invention discloses a construction method of an offshore box type prefabricated bearing platform, which comprises the following steps: excavating a submarine foundation pit, and constructing a steel pipe pile; replacing and filling the gravel cushion layer, and installing an underwater bottom sealing concrete template; pouring first-stage underwater bottom sealing concrete; hoisting the box-type prefabricated bearing platform along the guide pile; pouring second-stage underwater bottom sealing concrete; pumping out seawater in the compartment of the box-type prefabricated bearing platform, and cutting off the guide section of the steel pipe pile; pouring box-type prefabricated bearing platform compartment concrete in a layered manner; and backfilling the seabed foundation pit. The box-type prefabricated bearing platform does not need to be constructed in a dry environment, the box-type prefabricated bearing platform is penetrated into the bottom sealing concrete before solidification, the bottom sealing concrete is poured on the periphery of the bearing platform for the second time, the extrusion reverse bottom sealing is realized, the box-type prefabricated bearing platform structure serves as a cofferdam in the construction process, the permanent temporary combination is realized, the water pressure resistant steel cofferdam is saved, the construction risk and the engineering investment are reduced, and the box-type prefabricated bearing platform has good technical effects and wide application prospect.
Description
Technical Field
The invention belongs to the technical field of offshore bridge construction, and particularly relates to a construction method of an offshore box type prefabricated bearing platform.
Background
In the domestic bridge engineering, rivers are crossed to the ocean, and due to the water safety requirements of coastal nuclear power stations or reasons of humanity, environmental protection and the like, part of sea area ocean departments have strict limits on the water blocking rate of the cross-sea bridge, and the bridge passing through the relevant sea area needs to adopt an embedded bearing platform lower than the seabed, so that the construction difficulty of the seabed embedded bearing platform is very high.
At present, a submarine embedded bearing platform generally adopts a waterproof steel cofferdam capable of resisting ambient water pressure and performs bottom sealing and water pumping in the cofferdam, and the embedded bearing platform is constructed in a dry environment. If the construction method is adopted for the box-type prefabricated bearing platform, the cofferdam function of the box-type prefabricated bearing platform cannot be exerted, and the waste of temporary construction facilities is caused.
Disclosure of Invention
The invention is provided for solving the problems in the prior art, and aims to provide a construction method of an offshore box-type prefabricated bearing platform.
The technical scheme of the invention is as follows: a construction method of an offshore box type prefabricated bearing platform comprises the following steps:
excavating a submarine foundation pit and constructing a steel pipe pile
Excavating a seabed foundation pit to a designed elevation by using a dredger, inserting and driving peripheral steel pipe inclined piles to the designed elevation in place by using the dredger, and then inserting and driving a middle vertical steel pipe pile;
ii, replacing and filling the broken stone cushion, and installing the underwater bottom sealing concrete template
Filling a broken stone cushion layer in the seabed foundation pit, and installing an underwater bottom sealing concrete template by adopting a floating crane to hoist;
iii, pouring first-stage underwater bottom sealing concrete
Pouring first-stage underwater bottom sealing concrete in the underwater bottom sealing concrete template, and vibrating and leveling by using a vibrating spear;
iv, hoisting box type prefabricated bearing platform along guide pile
After the first-stage underwater bottom sealing concrete pouring is finished, immediately hoisting the box-type prefabricated bearing platform to a designed elevation along the middle vertical steel pipe pile, and extruding for stopping water;
v. pouring second stage underwater back cover concrete
Pouring second-stage underwater bottom sealing concrete along the free space between the periphery of the box-type prefabricated bearing platform and the underwater bottom sealing concrete template;
vi, cutting off the guide section of the steel pipe pile
After the underwater bottom sealing concrete reaches the design strength, pumping out seawater in a compartment in the box-type prefabricated bearing platform, and cutting off a guide section at the top of the middle vertical steel pipe pile;
vii-layered pouring box type prefabricated bearing platform compartment concrete
Pouring the compartments in the prefabricated bearing platform in layers until the compartment concrete is higher than the top cover of the prefabricated bearing platform;
viii sea bottom foundation pit backfill
And (4) removing the underwater bottom sealing concrete template, and backfilling the submarine foundation pit.
Furthermore, in the step i, the top of the pile body of the middle vertical steel pipe pile is higher than the sea level construction water level, and the part of the pile body of the middle vertical steel pipe pile, which is higher than the inclined steel pipe piles on the periphery, serves as a guide section for installing and guiding the prefabricated bearing platform.
Further, the first stage underwater bottom sealing concrete in the step iv and the second stage underwater bottom sealing concrete in the step v form bottom sealing concrete together.
Furthermore, the height of the underwater bottom-sealing concrete template in the step ii is larger than that of the bottom-sealing concrete.
Further, in step iii, the top surface elevation of the first-stage underwater bottom sealing concrete is higher than the design elevation of the bottom of the prefabricated bearing platform.
Further, the squeezing water stop in the step iv comprises the following processes:
firstly, the hoisting of the prefabricated bearing platform is carried out before the first-stage underwater bottom sealing concrete is solidified,
then, the bottom of the hoisted prefabricated bearing platform is penetrated into the first-stage underwater bottom sealing concrete, so that extrusion water stopping is realized.
Furthermore, the second stage underwater bottom sealing concrete in the step v is annular, so that the sealing effect of the prefabricated bearing platform and the first stage underwater bottom sealing concrete is ensured.
Furthermore, the concrete in the compartment in the step vii is higher than that of the top cover, so that the concrete at the top of the compartment is more compact under a certain pressure.
Further, after the step viii is backfilled, installing the residual sections of the pier body of the subsequent hollow pier bottom sections, and pouring the solid sections of the pier bottom.
The invention has the following beneficial effects:
the box-type prefabricated bearing platform does not need to be constructed in a dry environment, the box-type prefabricated bearing platform is penetrated into the bottom sealing concrete before solidification, the bottom sealing concrete is poured on the periphery of the bearing platform for the second time, the extrusion reverse bottom sealing is realized, the box-type prefabricated bearing platform structure serves as a cofferdam in the construction process, the permanent temporary combination is realized, the water pressure resistant steel cofferdam is saved, the construction risk and the engineering investment are reduced, and the box-type prefabricated bearing platform has good technical effects and wide application prospect.
Drawings
FIG. 1 is a cross-sectional view of section 1-1 of the present invention;
FIG. 2 is a cross-sectional view of section 2-2 of the present invention;
FIG. 3 is a cross-sectional view of section 3-3 of the present invention;
FIG. 4 is a cross-sectional view of section 4-4 of the present invention;
FIG. 5 is a schematic view of the construction of step i in the present invention;
FIG. 6 is a schematic view of step ii of the present invention;
FIG. 7 is a schematic view of the construction of step iii in the present invention;
FIG. 8 is a schematic diagram of the construction of step iv in the present invention;
FIG. 9 is a schematic illustration of the construction of step v in the present invention;
FIG. 10 is a schematic view of the construction at step vi in the present invention;
FIG. 11 is a view of step vii in the present invention;
FIG. 12 is a schematic view of the construction of step viii in the present invention;
wherein:
1 partition wall 2 roof
3 partition chamber 4 hollow pier bottom section pier body
5 shearing force groove 6 manhole
7 pile body 8 underwater bottom sealing concrete formwork
9-bottom-sealing concrete and 10-compartment concrete
9-1 first-stage underwater bottom sealing concrete and 9-2 second-stage underwater bottom sealing concrete.
Detailed Description
The present invention is described in detail below with reference to the accompanying drawings and examples:
as shown in fig. 1 to 12, a construction method of an offshore box-type prefabricated bearing platform comprises the following steps:
excavating a submarine foundation pit and constructing a steel pipe pile
Excavating a seabed foundation pit to a designed elevation by using a dredger, inserting and driving peripheral steel pipe inclined piles to the designed elevation in place by using the dredger, and then inserting and driving a middle vertical steel pipe pile;
ii, replacing and filling the broken stone cushion, and installing the underwater bottom sealing concrete template
Filling a broken stone cushion layer in the seabed foundation pit, and installing an underwater bottom-sealing concrete template 8 by adopting a floating crane to hoist;
iii, pouring first-stage underwater bottom sealing concrete
Pouring first-stage underwater bottom sealing concrete 9-1 in the underwater bottom sealing concrete template 8, and vibrating and leveling by using a vibrating rod;
iv, hoisting box type prefabricated bearing platform along guide pile
After the first-stage underwater bottom sealing concrete 9-1 is poured, immediately hoisting the box-type prefabricated bearing platform to a designed elevation along the middle vertical steel pipe pile, and extruding for stopping water;
v. pouring second stage underwater back cover concrete
Pouring second-stage underwater bottom sealing concrete 9-2 along the free space between the periphery of the box-type prefabricated bearing platform and the underwater bottom sealing concrete template 8;
vi, cutting off the guide section of the steel pipe pile
After the underwater bottom sealing concrete 9 reaches the design strength, pumping out the seawater in the intermediate compartment 3 of the box-type prefabricated bearing platform, and cutting off the guide section at the top of the middle vertical steel pipe pile;
vii-layered pouring box type prefabricated bearing platform compartment concrete
Pouring the compartment 3 in the prefabricated bearing platform in layers until the compartment concrete 10 is higher than the top cover 2 of the prefabricated bearing platform;
viii sea bottom foundation pit backfill
And (4) removing the underwater bottom sealing concrete template 8, and backfilling the seabed foundation pit.
And in the step i, the top of the pile body 7 of the middle vertical steel pipe pile is higher than the sea level construction water level, and the part of the pile body 7 of the middle vertical steel pipe pile, which is higher than the inclined steel pipe piles at the periphery, is used as a guide section for installing and guiding the prefabricated bearing platform.
And (4) combining the first-stage underwater bottom sealing concrete 9-1 in the step iv and the second-stage underwater bottom sealing concrete 9-2 in the step v to form the bottom sealing concrete 9.
And the height of the underwater bottom-sealing concrete template 8 in the step ii is greater than that of the bottom-sealing concrete 9.
And in the step iii, the top surface elevation of the first-stage underwater bottom sealing concrete 9-1 is higher than the design elevation of the bottom of the prefabricated bearing platform.
The extrusion water stop in the step iv comprises the following steps:
firstly, the hoisting of the prefabricated bearing platform is carried out before the first-stage underwater bottom sealing concrete 9-1 is solidified,
then, the bottom of the hoisted prefabricated bearing platform is penetrated into the first-stage underwater bottom sealing concrete 9-1, so that extrusion water stopping is realized.
And the second stage underwater bottom sealing concrete 9-2 in the step v is annular, so that the sealing effect of the prefabricated bearing platform and the first stage underwater bottom sealing concrete 9-1 is ensured.
Step vii septal cabin concrete 10 is higher than roof 2, makes the concrete at the top of lobe 3 more closely knit under certain pressure.
And after the step viii is backfilled, performing subsequent residual section installation of the hollow pier bottom section pier body 4, and pouring a pier bottom solid section.
Wherein, prefabricated cushion cap is including being located all around with inside partition wall 1, there is top cap 2 partition wall 1 upper end, prefabricated cushion cap top and prefabricated hollow mound pier shaft base section be linked into wholly, the bottom of prefabricated cushion cap is opened, partition wall 1 separates the inside of prefabricated cushion cap into a plurality of compartments 3, every compartment 3 can hold corresponding pile body 7 to realize concreting between with the pile body.
The upper end of the inner partition wall 3 of the prefabricated bearing platform is provided with a manhole 6, and the manhole 6 is used for communicating two adjacent partition chambers 3.
And a shear groove 5 is also arranged in the internal partition wall 1 of the prefabricated bearing platform.
Yet another embodiment
The present embodiment is discussed with reference to specific parameters
A construction method of an offshore box type prefabricated bearing platform comprises the following steps:
excavating a submarine foundation pit and constructing a steel pipe pile
Excavating a seabed foundation pit to a designed elevation by using a dredger, inserting and driving peripheral steel pipe inclined piles to the designed elevation in place by using the dredger, and then inserting and driving a middle vertical steel pipe pile;
ii, replacing and filling the broken stone cushion, and installing the underwater bottom sealing concrete template
Filling a broken stone cushion layer in the seabed foundation pit, and installing an underwater bottom-sealing concrete template 8 by adopting a floating crane to hoist;
iii, pouring first-stage underwater bottom sealing concrete
Pouring first-stage underwater bottom sealing concrete 9-1 in the underwater bottom sealing concrete template 8, and vibrating and leveling by using a vibrating rod;
iv, hoisting box type prefabricated bearing platform along guide pile
After the first-stage underwater bottom sealing concrete 9-1 is poured, immediately hoisting the box-type prefabricated bearing platform to a designed elevation along the middle vertical steel pipe pile, and extruding for stopping water;
v. pouring second stage underwater back cover concrete
Pouring second-stage underwater bottom sealing concrete 9-2 along the free space between the periphery of the box-type prefabricated bearing platform and the underwater bottom sealing concrete template 8;
vi, cutting off the guide section of the steel pipe pile
After the underwater bottom sealing concrete 9 reaches the design strength, pumping out the seawater in the intermediate compartment 3 of the box-type prefabricated bearing platform, and cutting off the guide section at the top of the middle vertical steel pipe pile;
vii-layered pouring box type prefabricated bearing platform compartment concrete
Pouring the compartment 3 in the prefabricated bearing platform in layers until the compartment concrete 10 is higher than the top cover 2 of the prefabricated bearing platform;
viii sea bottom foundation pit backfill
And (4) removing the underwater bottom sealing concrete template 8, and backfilling the seabed foundation pit.
And in the step i, the top of the pile body 7 of the middle vertical steel pipe pile is higher than the sea level construction water level, and the part of the pile body 7 of the middle vertical steel pipe pile, which is higher than the inclined steel pipe piles at the periphery, is used as a guide section for installing and guiding the prefabricated bearing platform.
And (4) combining the first-stage underwater bottom sealing concrete 9-1 in the step iv and the second-stage underwater bottom sealing concrete 9-2 in the step v to form the bottom sealing concrete 9.
And the height of the underwater bottom-sealing concrete template 8 in the step ii is greater than that of the bottom-sealing concrete 9.
And in the step iii, the top surface elevation of the first-stage underwater bottom sealing concrete 9-1 is higher than the design elevation of the bottom of the prefabricated bearing platform.
The extrusion water stop in the step iv comprises the following steps:
firstly, the hoisting of the prefabricated bearing platform is carried out before the first-stage underwater bottom sealing concrete 9-1 is solidified,
then, the bottom of the hoisted prefabricated bearing platform is penetrated into the first-stage underwater bottom sealing concrete 9-1, so that extrusion water stopping is realized.
The second stage underwater bottom sealing concrete 9-2 in the step v is annular, so that the packaging effect of the prefabricated bearing platform and the first stage underwater bottom sealing concrete 9-1 is ensured.
Step vii septal cabin concrete 10 is higher than roof 2, makes the concrete at the top of lobe 3 more closely knit under certain pressure.
And after the step viii is backfilled, performing subsequent residual section installation of the hollow pier bottom section pier body 4, and pouring a pier bottom solid section.
And c, the pile top of the vertical steel pipe pile in the middle of the step i needs to be 3-4 m higher than the sea level construction water level, and the pile top is also used as a temporary guide pile in the construction stage.
Wherein the height of the underwater bottom sealing concrete template 8 is 1.2-1.5 times of the thickness of the bottom sealing concrete 9.
Further, a bolt is arranged at the joint of the underwater bottom sealing concrete template 8, and the bolt can be pulled out by a pre-connected steel wire rope after the bottom sealing is finished to open the template for hoisting and dismounting.
The underwater bottom-sealing concrete template 8 in the bolt mode is convenient to manufacture, low in precision requirement, convenient to dismantle and capable of being reused.
Wherein the top surface elevation of the first-stage underwater bottom sealing concrete 9-1 is 0.5 m-1.0 m higher than the design elevation of the bottom of the prefabricated bearing platform. The top surface elevation of the first-stage underwater bottom sealing concrete 9-1 is higher than the designed elevation of the bottom of the prefabricated bearing platform, so that the box-type prefabricated bearing platform can be penetrated into the unset bottom sealing concrete when being lowered to the designed elevation, and the purpose of extruding and stopping water is achieved.
Wherein the thickness of the second-stage underwater bottom sealing concrete 9-2 is 0.5 m-1 m.
And performing secondary reverse bottom sealing on the second-stage underwater bottom sealing concrete 9-2 to ensure the sealing effect between the box-type prefabricated bearing platform and the first-stage underwater bottom sealing concrete 9-1.
And step iv and step v realize extrusion reverse bottom sealing.
Wherein, the bulkhead concrete 10 reaches the design intensity, has realized the consolidation between box prefabricated cushion cap and the pile head.
The box-type prefabricated bearing platform does not need to be constructed in a dry environment, the box-type prefabricated bearing platform is penetrated into the bottom sealing concrete before solidification, the bottom sealing concrete is poured on the periphery of the bearing platform for the second time, the extrusion reverse bottom sealing is realized, the box-type prefabricated bearing platform structure serves as a cofferdam in the construction process, the permanent temporary combination is realized, the water pressure resistant steel cofferdam is saved, the construction risk and the engineering investment are reduced, and the box-type prefabricated bearing platform has good technical effects and wide application prospect.
Claims (9)
1. A construction method of an offshore box type prefabricated bearing platform is characterized by comprising the following steps: the method comprises the following steps:
excavating a submarine foundation pit and constructing a steel pipe pile
Excavating a seabed foundation pit to a designed elevation by using a dredger, inserting and driving peripheral steel pipe inclined piles to the designed elevation in place by using the dredger, and then inserting and driving a middle vertical steel pipe pile;
(ii) replacing and filling the broken stone cushion layer, and installing the underwater bottom sealing concrete template
Filling a broken stone cushion layer in the seabed foundation pit, and installing an underwater bottom sealing concrete template (8) by adopting a floating crane to hoist;
(iii) casting the first stage underwater back cover concrete
Pouring primary underwater bottom sealing concrete (9-1) in the underwater bottom sealing concrete template (8), and vibrating and leveling by using a vibrating rod;
(iv) hoisting box-type prefabricated bearing platform along guide pile
After the first-stage underwater bottom sealing concrete (9-1) is poured, immediately hoisting the box-type prefabricated bearing platform to a designed elevation along the middle vertical steel pipe pile, and extruding for stopping water;
(v) casting second stage underwater back cover concrete
Pouring second-stage underwater bottom sealing concrete (9-2) along the gap between the periphery of the box-type prefabricated bearing platform and the underwater bottom sealing concrete template (8);
(vi) cutting off the guide section of the steel pipe pile
After the underwater bottom sealing concrete (9) reaches the design strength, pumping out seawater in a compartment (3) in the box-type prefabricated bearing platform, and cutting off a guide section at the top of the middle vertical steel pipe pile;
(vii) layered pouring box type prefabricated bearing platform compartment concrete
Pouring the compartment (3) in the prefabricated bearing platform in layers until the compartment concrete (10) is higher than the top cover (2) of the prefabricated bearing platform;
(viii) seabed foundation ditch backfill
And (3) removing the underwater bottom sealing concrete template (8) and backfilling the submarine foundation pit.
2. The construction method of the offshore box-type prefabricated bearing platform according to claim 1, wherein the construction method comprises the following steps: in the step (i), the top of the pile body (7) of the middle vertical steel pipe pile is higher than the sea level construction water level, and the part, higher than the inclined steel pipe piles at the periphery, of the pile body (7) of the middle vertical steel pipe pile serves as a guide section for installing and guiding the prefabricated bearing platform.
3. The construction method of the offshore box-type prefabricated bearing platform according to claim 1, wherein the construction method comprises the following steps: and (4) the first stage underwater bottom sealing concrete (9-1) in the step (iv) and the second stage underwater bottom sealing concrete (9-2) in the step (v) jointly form a bottom sealing concrete (9).
4. The construction method of the offshore box-type prefabricated bearing platform according to claim 3, wherein the construction method comprises the following steps: and (ii) the height of the underwater bottom-sealing concrete template (8) in the step (ii) is greater than that of the bottom-sealing concrete (9).
5. The construction method of the offshore box-type prefabricated bearing platform according to claim 1, wherein the construction method comprises the following steps: and (iii) the top surface elevation of the first-stage underwater bottom sealing concrete (9-1) is higher than the design elevation of the bottom of the prefabricated bearing platform.
6. The construction method of the offshore box-type prefabricated bearing platform according to claim 1, wherein the construction method comprises the following steps: the extrusion water stop in the step (iv) comprises the following steps:
firstly, the hoisting of the prefabricated bearing platform is carried out before the solidification of the underwater bottom sealing concrete (9-1),
then, the bottom of the hoisted prefabricated bearing platform is penetrated into the first-stage underwater bottom sealing concrete (9-1) to realize extrusion water stop.
7. The construction method of the offshore box-type prefabricated bearing platform according to claim 1, wherein the construction method comprises the following steps: and (d) the second stage underwater bottom sealing concrete (9-2) in the step (v) is annular, so that the sealing effect of the prefabricated bearing platform and the first stage underwater bottom sealing concrete (9-1) is ensured.
8. The construction method of the offshore box-type prefabricated bearing platform according to claim 1, wherein the construction method comprises the following steps: and in the step (vii), the compartment concrete (10) is higher than the top cover (2), so that the concrete at the top of the compartment (3) is more compact under certain pressure.
9. The construction method of the offshore box-type prefabricated bearing platform according to claim 1, wherein the construction method comprises the following steps: and (viii) after backfilling is completed, installing residual sections of the subsequent hollow pier bottom section pier body (4), and pouring a pier bottom solid section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110341984.XA CN113136889B (en) | 2021-03-30 | 2021-03-30 | Construction method of offshore box type prefabricated bearing platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110341984.XA CN113136889B (en) | 2021-03-30 | 2021-03-30 | Construction method of offshore box type prefabricated bearing platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113136889A true CN113136889A (en) | 2021-07-20 |
| CN113136889B CN113136889B (en) | 2023-03-10 |
Family
ID=76811626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110341984.XA Active CN113136889B (en) | 2021-03-30 | 2021-03-30 | Construction method of offshore box type prefabricated bearing platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113136889B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3144509A1 (en) * | 1981-11-09 | 1983-05-26 | Alfred Kunz GmbH & Co, 8000 München | Method and device for concreting underwater structures, preferably tunnels |
| CN103938644A (en) * | 2014-03-14 | 2014-07-23 | 中国水电顾问集团西北勘测设计研究院有限公司 | Prefabricated concrete bearing platform with reserved pile nest holes and fabricated multi-pile foundation installation method based on prefabricated concrete bearing platform with reserved pile nest holes |
| CN108643221A (en) * | 2018-07-27 | 2018-10-12 | 中交第三航务工程局有限公司 | A kind of offshore wind farm assembled cushion cap foundation and its construction method |
| CN110700301A (en) * | 2019-10-18 | 2020-01-17 | 中国铁路设计集团有限公司 | Screw type prefabricated pipe pile and prefabricated bearing platform connecting structure |
-
2021
- 2021-03-30 CN CN202110341984.XA patent/CN113136889B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3144509A1 (en) * | 1981-11-09 | 1983-05-26 | Alfred Kunz GmbH & Co, 8000 München | Method and device for concreting underwater structures, preferably tunnels |
| CN103938644A (en) * | 2014-03-14 | 2014-07-23 | 中国水电顾问集团西北勘测设计研究院有限公司 | Prefabricated concrete bearing platform with reserved pile nest holes and fabricated multi-pile foundation installation method based on prefabricated concrete bearing platform with reserved pile nest holes |
| CN108643221A (en) * | 2018-07-27 | 2018-10-12 | 中交第三航务工程局有限公司 | A kind of offshore wind farm assembled cushion cap foundation and its construction method |
| CN110700301A (en) * | 2019-10-18 | 2020-01-17 | 中国铁路设计集团有限公司 | Screw type prefabricated pipe pile and prefabricated bearing platform connecting structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113136889B (en) | 2023-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101148890B (en) | Bridge caisson composite pile foundation and reverse construction method thereof | |
| CN101962956B (en) | Bridge prefabricated foundation and bed-burying method thereof | |
| CN102767189B (en) | Set bearing platform foundations and construction method thereof | |
| CN101736744B (en) | Self-balancing sinking large-diameter tubular pile and construction method thereof | |
| EP3118374A1 (en) | Hollow cylindrical pier for fixing offshore platform structure to bed and method of installing and constructing same | |
| CN102561371B (en) | Steel caisson enclosure structure at island-tunnel combination part and construction method thereof | |
| CN109578014B (en) | Anti-surging bottom sealing structure and construction method | |
| KR20120012504A (en) | Cast in place concrete pile With precast type Caisson | |
| CN103572770B (en) | A kind of stake case hydraulic structures and construction method thereof | |
| KR100914650B1 (en) | The well foundation method for which a steel caisson for pier reinforcement was used | |
| CN203654309U (en) | Pile-caisson hydraulic structure | |
| KR20010096389A (en) | Construction Method of Direct Foundation for using Caisson | |
| CN201588209U (en) | Self-balancing sinking tubular pile with large diameter | |
| CN212104151U (en) | Assembled reinforced concrete caisson | |
| CN113136889B (en) | Construction method of offshore box type prefabricated bearing platform | |
| CN111691447A (en) | Slow sinking type caisson construction method for reducing load of immersed tube tunnel tube top | |
| CN210562253U (en) | Conical cylinder type offshore wind generating set foundation structure | |
| CN202767095U (en) | Set pile cap foundation | |
| CN215165200U (en) | Low pile cap buttress combination formula dock wall structure | |
| JP4260448B2 (en) | Connection method and structure of submerged shaft and horizontal shaft | |
| CN109403325B (en) | Large-diameter steel-concrete combined cylinder dispersed multi-open caisson foundation and construction method thereof | |
| CN111270682A (en) | Underground continuous wall structure with high vertical bearing capacity and construction method thereof | |
| CN213954530U (en) | Crossing structure for steel pipe to cross river channel | |
| CN211898436U (en) | Underground continuous wall structure with high vertical bearing capacity | |
| CN115897640B (en) | Construction method of permeable breakwater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |