CN114737494B - Offshore construction method - Google Patents
Offshore construction method Download PDFInfo
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- CN114737494B CN114737494B CN202210567304.0A CN202210567304A CN114737494B CN 114737494 B CN114737494 B CN 114737494B CN 202210567304 A CN202210567304 A CN 202210567304A CN 114737494 B CN114737494 B CN 114737494B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/64—Repairing piles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
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Abstract
The invention discloses an offshore construction method for reinforcing a bridge pile foundation, which comprises the following steps of: s1, installing an offshore operation platform on a water structure of a bridge, and fixedly connecting the offshore operation platform to the water structure; s2, installing a guide frame on the offshore operation platform, and lowering the guide frame into the sea; s3, lowering a construction pipeline into the guide frame to the sea; s4, injecting reinforcing materials into the construction pipeline. The offshore operation platform and the construction pipeline can not be affected by sea waves to swing, constructors can conveniently determine the lowering position of the construction pipeline during construction, errors in lowering position of the construction pipeline caused by the influence of sea wave scouring are avoided, poor reinforcing effect of pile foundations is avoided, construction quality and efficiency are improved, and on the other hand, the offshore operation platform and the construction pipeline can not collide with the pile foundations to cause damage to bridge structures.
Description
Technical Field
The invention relates to the technical field of bridge pile foundation reinforcement engineering, in particular to an offshore construction method.
Background
Pile foundations are arranged below the bridge pier to bear the load transmitted by the upper structure and transmit the load to the foundation. When the bridge is a cross-sea bridge, the pile foundation is located in the sea, and in order to prevent the pile foundation from being washed out and causing the bearing capacity to be lowered, the seabed washed out near the pile foundation is generally required to be reinforced.
In the prior art, construction is usually carried out on a ship, specifically, a ship body is anchored at a corresponding position on the sea, and then a pipeline is pulled to a rough position for construction, in order to prevent collision, the ship body and the pipeline need to keep a sufficient safety distance, so that the ship body and the pipeline are extremely easy to be influenced by sea waves to swing to a certain extent during construction, the construction quality and efficiency are influenced, and meanwhile, the ship body and the pipeline are easy to collide with a pile foundation to cause secondary influence.
Disclosure of Invention
The invention aims to overcome the defect that the ship body and the pipeline are easily affected by sea waves to generate certain swing during construction in the prior art, and provides an offshore construction method.
The invention solves the technical problems by the following technical scheme:
an offshore construction method for reinforcing a bridge pile foundation, the offshore construction method comprising the steps of:
s1, installing an offshore operation platform on a water structure of a bridge, and fixedly connecting the offshore operation platform to the water structure;
s2, installing a guide frame on the offshore operation platform, and lowering the guide frame into the sea;
s3, lowering a construction pipeline into the guide frame to the sea;
s4, injecting reinforcing materials into the construction pipeline.
In this scheme, the leading truck in the straight sea of installation on offshore operation platform, construction pipeline passes through the leading truck and descends, when constructor's construction on offshore operation platform like this, construction pipeline can not receive the influence of wave and take place the swing, thereby, on the one hand, the construction personnel of being convenient for confirm the position of putting down of construction pipeline when constructing, avoided the influence that leads to the position error of putting down of construction pipeline because of the wave erodees, and then avoided the not good condition of the reinforcement effect of pile foundation, be favorable to improving construction quality and efficiency, on the other hand, offshore operation platform and construction pipeline also can not bump with the pile foundation and cause bridge construction's damage.
Preferably, the offshore operation platform comprises a plurality of construction frames for construction, a connecting frame for connecting the above-water structure, and at least two support beams for supporting the construction frames and the connecting frame; the step S1 includes:
s11, arranging the supporting beams on two sides of the water structure, and fixedly mounting the supporting beams on the water structure;
s12, mounting the connecting frame on the supporting beam;
and S13, installing a plurality of construction frames on the supporting beams, wherein two ends of the construction frames are respectively connected with the supporting beams on two sides.
In this scheme, according to above-mentioned step installation offshore operation platform, can avoid supporting beam, link and scaffold inter-interference, be favorable to improving offshore operation platform installation order, and then improve installation effectiveness.
Preferably, the connecting frame is arranged around the bridge pier, and the connecting frame comprises a first beam with the same extending direction as the supporting beam and a second beam perpendicular to the extending direction of the supporting beam, and in step S12, the second beam is firstly mounted on the supporting beam when the connecting frame is mounted, and then the first beam is mounted on the supporting beam;
and/or, along the length direction of the supporting beam, the connecting frame is arranged in the middle of the supporting beam, and a plurality of construction frames are respectively arranged at two ends of the supporting beam; in step S13, the construction frame close to the connection frame is installed first, and then the construction frame far from the connection frame is installed.
In the scheme, the second beam is firstly arranged on the supporting beam, and then the first beam is arranged on the supporting beam, so that the installation efficiency is improved, and meanwhile, the material is saved;
firstly, installing a construction frame close to the connecting frame, and then installing a construction frame far away from the connecting frame, so that the installation order is improved, and the installation efficiency is improved.
Preferably, in step S13, a plurality of the construction frames are arranged at intervals, and the guide frames are mounted in the intervals between the adjacent construction frames.
In this scheme, constructor can construct guide frame and construction pipeline in the interval on the scaffold of both sides, is favorable to improving the efficiency and the convenience of construction.
Preferably, the step S1 further includes:
s14, installing at least one connecting beam in the interval between the adjacent construction frames, wherein two ends of the connecting beam are respectively connected with the adjacent construction frames.
In this scheme, through the installation tie-beam, avoided constructor to need additionally measure the location to every point of putting down before the construction, further improved the efficiency of construction.
Preferably, in step S14, the connecting beam divides the space into at least two lowering points, two ends of the connecting beam are detachably connected to the construction frames at two sides respectively,
or alternatively, the first and second heat exchangers may be,
one end of the connecting beam is rotatably connected with the construction frame, and the other end of the connecting beam is detachably connected with the adjacent construction frame.
In this scheme, because the length of leading truck is very long, can dismantle the tie-beam after accomplishing the construction of a department, directly transversely remove construction pipeline and leading truck to the next point of putting down that is located same interval, avoided upwards pulling construction pipeline and leading truck and put down again the operation, improved the efficiency of construction.
Preferably, the step S1 further includes:
and S15, mounting a fixing device for fixing the guide frame on one side of the construction frame facing the interval.
Preferably, at least two piers are arranged along the width direction of the bridge, and each pier is provided with the offshore operation platform; the step S1 further includes:
s16, installing a side stand between the adjacent offshore operation platforms.
In this scheme, constructor can remove between two offshore operation platforms through the bank of people, has further improved the efficiency of construction.
Preferably, the guide frame comprises a plurality of segments; the step S2 includes:
s21, lowering the first section to a preset height, and fixedly connecting the first section to the offshore operation platform;
s22, fixedly connecting the bottom of the second section to the top of the first section;
s23, lowering the second section to a preset height, and fixedly connecting the second section to the offshore operation platform;
s24, repeating the steps S21-S23 until the last segment is lowered to a preset height;
and S25, fixedly connecting the last section to the offshore operation platform.
In this scheme, because the length of leading truck is very long and weight is heavier, based on the limited problem of marine construction equipment, divide into a plurality of sections with the leading truck and put down in proper order, effectively reduced the construction degree of difficulty.
Preferably, the offshore operation platform is provided with a fixing device so that the guide frame is fixedly connected to the offshore operation platform, the fixing device comprises at least two horizontal limiting beams, at least one vertical limiting beam and a plurality of jacking components, the horizontal limiting beams are respectively arranged on two sides of the guide frame, the jacking components are matched with the horizontal limiting beams to limit the horizontal displacement of the guide frame, and the vertical limiting beams horizontally penetrate through the guide frame and are arranged on the offshore operation platform or a bearing structure on the offshore operation platform to limit the vertical displacement of the guide frame.
In this scheme, above-mentioned fixing device can realize the spacing of vertical and horizontal simultaneously to be convenient for install, be convenient for operate.
Preferably, the offshore construction method further comprises:
s5, after the construction of one place is completed, moving the guide frame and the construction pipeline to another lowering point;
s6, injecting construction materials into the construction pipeline;
s7, repeating the steps S5-S6 until the construction of the complete lowering point is completed;
s8, dismantling the construction pipeline, the guide frame and the offshore operation platform according to the reverse sequence of the installation sequence.
The invention has the positive progress effects that:
according to the invention, the guide frame in the through sea is arranged on the offshore operation platform, the construction pipeline is lowered through the guide frame, so that when a constructor works on the offshore operation platform, the construction pipeline cannot be affected by sea waves to swing, on one hand, the constructor can conveniently determine the lowering position of the construction pipeline during construction, the lowering position error of the construction pipeline caused by the influence of sea wave scouring is avoided, the condition of poor reinforcement effect of a pile foundation is avoided, the improvement of construction quality and efficiency is facilitated, and on the other hand, the offshore operation platform and the construction pipeline cannot collide with the pile foundation to cause the damage of a bridge structure.
Drawings
FIG. 1 is a flowchart showing a method of offshore construction according to a preferred embodiment of the present invention.
FIG. 2 is a second flowchart of the offshore construction method according to the preferred embodiment of the invention.
FIG. 3 is a schematic top view of an offshore platform according to a preferred embodiment of the invention.
Fig. 4 is a schematic diagram showing the bridge structure and the offshore platform according to the preferred embodiment of the present invention.
Description of the reference numerals
Drop point 1
Connecting beam 42
Fixing device 5
Connecting frame 6
Pile foundation 8
Pier 9
Detailed Description
The invention is further illustrated by means of examples which follow, without thereby restricting the scope of the invention thereto.
Please understand with reference to fig. 1-4, wherein fig. 3 omits the left bridge structure to clearly show the structure of the offshore platform 100, only a portion of the fixing device 5 is shown in fig. 3, and only a segment of the guide frame 2 is shown in fig. 4.
The present embodiment discloses an offshore construction method for reinforcing a pile foundation 8 of a bridge by performing construction with cooperation of an offshore operation platform 100 and a guide frame 2. The structure of the offshore operation platform 100 will be described in detail before the offshore construction method is disclosed.
The offshore platform 100 comprises two support beams 3 and a plurality of construction frames 4, wherein the support beams 3 are respectively arranged on two sides of the bridge pier 9 and fixedly connected to the top surface of the pile foundation 8, two ends of the construction frames 4 are respectively connected to the support beams 3 on two sides, so that stability of the construction frames 4 is improved, and construction safety is improved. Wherein the support beam 3 on each side comprises a plurality of segments which in turn are connected to form a strip-shaped support beam 3. On the one hand, the transportation and the carrying on the sea are convenient, on the other hand, according to the different sizes of different bridges, the number of the sections can be changed to adapt to different bridges, and the universality is better. In the present embodiment, the support beam 3 comprises three segments.
In this embodiment, a plurality of construction frames 4 are arranged at intervals, a plurality of lowering points 1 are arranged in the intervals 41 between the adjacent construction frames 4, and constructors can construct the guide frames 2 and the construction pipelines in the intermediate intervals 41 on the construction frames 4 on two sides, so that the construction efficiency and convenience are improved. In order to further improve the efficiency of construction, avoid constructor to need additionally measure the location to every point of putting down 1 before the construction, still be equipped with at least one tie-beam 42 in the interval 41, the both ends of tie-beam 42 are connected in adjacent scaffold 4 respectively, and tie-beam 42 separates interval 41 into two at least points of putting down 1.
Wherein, the both ends of tie beam 42 detachably connect in the scaffold 4 of both sides respectively, or the one end of tie beam 42 can rotate and connect in scaffold 4, and the other end detachably of tie beam 42 connects in another adjacent scaffold 4 to after accomplishing the construction of a department, can dismantle tie beam 42, directly transversely remove construction pipeline and leading truck 2 to the next drop point 1 that is located same interval 41, avoided upwards pulling construction pipeline and leading truck 2 and put down again's operation, improved the efficiency of construction.
The side of the construction frame 4 facing the interval 41 is provided with a fixing device 5, and the guide frame 2 is fixed on the offshore operation platform 100 through the fixing device 5, so that the guide frame 2 is prevented from being swayed due to the influence of sea wave scouring. When the guide frame 2 needs to be moved, the restriction of the fixing device 5 on the guide frame 2 is released. Specifically, the fixing device 5 includes at least two horizontal limiting beams, at least one vertical limiting beam and a plurality of jacking components, the horizontal limiting beams are respectively arranged at two sides of the guide frame 2, the jacking components are matched with the horizontal limiting beams to limit the horizontal displacement of the guide frame 2, and the vertical limiting beams horizontally penetrate through the guide frame 2 and are erected on the offshore operation platform 100 or a bearing structure on the offshore operation platform 100 to limit the vertical displacement of the guide frame 2. In this embodiment, the jacking assembly is a jack. In other embodiments, the jacking assembly may be other jacking equipment, such as hydraulic jacking equipment.
The offshore platform 100 further comprises a connecting frame 6, the connecting frame 6 is surrounded on the bridge pier 9, and two ends of the connecting frame 6 are respectively connected with the supporting beams 3 on two sides, so that the connecting portion provides another connecting point between the offshore platform 100 and the bridge, and the offshore platform 100 is further stable. Specifically, the connection frame 6 includes a first beam 62 that is the same as the extending direction of the support beam 3 and a second beam 61 that is perpendicular to the extending direction of the support beam 3, and the length of the first beam 62 is smaller than the length of the second beam 61.
Along the length direction of the support beam 3, a plurality of construction frames 4 are respectively arranged at two ends of the support beam 3, and a connecting part is arranged at the middle part of the support beam 3. At least two piers 9 are arranged along the width direction of the bridge, an offshore operation platform 100 is arranged at each pier 9, a pedestrian frame 7 is further arranged on the offshore operation platform 100, and two ends of the pedestrian frame 7 are respectively connected with the offshore operation platforms 100 on two sides.
The offshore construction method performs the reinforcement construction of the bridge pile foundation 8 by using the offshore operation platform 100, and includes the following steps: s1, installing an offshore operation platform 100 on a water structure of a bridge, and fixedly connecting the offshore operation platform 100 to the water structure; s2, installing a guide frame 2 on the offshore operation platform 100, and lowering the guide frame 2 into the sea; s3, lowering a construction pipeline into the guide frame 2 to the sea; s4, injecting reinforcing materials into the construction pipeline. In this embodiment, the reinforcement material is a cured slurry.
The guide frame 2 in the straight-through sea is installed on the offshore operation platform 100, the construction pipeline is lowered through the guide frame 2, and therefore when constructors construct on the offshore operation platform 100, the offshore operation platform 100 and the construction pipeline cannot be affected by sea waves to swing, on one hand, the constructors are convenient to determine the lowering position of the construction pipeline during construction, the lowering position error of the construction pipeline caused by the influence of sea wave flushing is avoided, the condition that the reinforcing effect of the pile foundation 8 is poor is avoided, the improvement of construction quality and efficiency is facilitated, and on the other hand, the offshore operation platform 100 and the construction pipeline cannot collide with the pile foundation 8 to cause damage to a bridge structure.
Wherein, step S1 includes: s11, arranging the support beams 3 on two sides of the water structure, and fixedly mounting the support beams 3 on the water structure; s12, mounting the connecting frame 6 on the supporting beam 3; s13, a plurality of construction frames 4 are mounted on the supporting beam 3, and two ends of the construction frames 4 are respectively connected to the supporting beams 3 on two sides. According to the offshore operation platform 100 installed in the steps, the mutual interference among the supporting beam 3, the connecting frame 6 and the construction frame 4 can be avoided, the installation order of the offshore operation platform 100 can be improved, and the installation efficiency can be improved.
When the support beam 3 includes a plurality of segments, as in the present embodiment, the support beam 3 includes three segments, and when in installation, the middle segment is installed on the bridge water structure, then the connecting frame 6 is installed on the middle segment of the support beam 3, then the other two segments of the support beam 3 are respectively installed on two sides of the middle segment, and finally the construction frame 4 is installed on two segments on two sides of the support beam 3.
Since the connecting frame 6 includes the first beam 62 and the second beam 61 having different lengths and orientations, when the connecting frame 6 is installed, the second beam 61 is installed on the supporting beam 3, and then the first beam 62 is installed on the supporting beam 3, which is advantageous for improving the installation efficiency and saving materials.
Because along the length direction of supporting beam 3, the mid-mounting of supporting beam 3 has link 6, and a plurality of scaffold 4 are installed respectively at the both ends of supporting beam 3, when the installation, install the scaffold 4 that is close to link 6 earlier, install the scaffold 4 of keeping away from link 6 again to be favorable to improving the orderly nature of installation, and then improve installation effectiveness.
After the installation of the scaffold 4 is completed, step S1 further includes: and S14, at least one connecting beam 42 is arranged in the space 41 of the adjacent construction frames 4, and two ends of the connecting beam 42 are respectively connected with the adjacent construction frames 4. S15, a fixing device 5 for fixing the guide frame 2 is mounted on the side of the construction frame 4 facing the space 41. S16, installing the pedestrian frame 7 between the adjacent offshore operation platforms 100. Naturally, the manway 7 can be installed first and then the fixing device 5 can be installed.
After the installation of the offshore platform 100 is completed, the step of lowering the guide frame 2 is performed, and the guide frame 2 is lowered into the sea from the lowering point 1, and in order to reduce the construction difficulty, the guide frame 2 is divided into a plurality of sections to be lowered in sequence due to the long length and heavy weight of the guide frame 2. Specifically, step S2 includes: s21, lowering the first section to a preset height, and fixedly connecting the first section to the offshore operation platform 100 through the fixing device 5; s22, fixedly connecting the bottom of the second section to the top of the first section; s23, releasing the fixing device 5, lowering the second section to a preset height, and fixedly connecting the second section to the offshore operation platform 100 through the fixing device 5; s24, repeating the steps S21-S23 until the last segment is lowered to a preset height; s25, fixedly connecting the last segment to the offshore operation platform 100 through the fixing device 5.
The step of fixing the guide frame 2 by the fixing device 5 specifically comprises the following steps: after a section of the guide frame 2 is lowered to a preset height, the vertical limiting beam is transversely inserted into the guide frame 2 to realize vertical limiting of the guide frame 2, and then the horizontal limiting beam is lifted by the lifting assembly to enable the horizontal limiting beam to be abutted to two sides of the guide frame 2 to realize horizontal limiting. When the fixing device 5 is released, the jacking component is retracted firstly to release the horizontal limit, and then the vertical limit beam is taken down to release the vertical limit.
After step S4 is completed, the offshore construction method further includes: s5, after construction of one place is completed, the guide frame 2 and the construction pipeline are moved to another lowering point 1; s6, injecting construction materials into the construction pipeline; s7, repeating the steps S5-S6 until the construction of the full lowering point 1 is completed; s8, dismantling the construction pipeline, the guide frame 2 and the offshore operation platform 100 in the reverse order of the installation order.
Of course, before step S1, the offshore construction method further includes: preparing solidified slurry, and driving the construction ship carrying the solidified slurry to anchor in place.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (9)
1. An offshore construction method for reinforcing a bridge pile foundation, comprising the steps of:
s1, installing an offshore operation platform on a water structure of a bridge, and fixedly connecting the offshore operation platform to the water structure;
s2, installing a guide frame on the offshore operation platform, and lowering the guide frame into the sea;
s3, lowering a construction pipeline into the guide frame to the sea;
s4, injecting reinforcing materials into the construction pipeline;
the guide frame comprises a plurality of segments; the step S2 includes:
s21, lowering the first section to a preset height, and fixedly connecting the first section to the offshore operation platform;
s22, fixedly connecting the bottom of the second section to the top of the first section;
s23, lowering the second section to a preset height, and fixedly connecting the second section to the offshore operation platform;
s24, repeating the steps S21-S23 until the last segment is lowered to a preset height;
s25, fixedly connecting the last section to the offshore operation platform;
the offshore operation platform is provided with a fixing device so that the guide frame is fixedly connected to the offshore operation platform, the fixing device comprises at least two horizontal limiting beams, at least one vertical limiting beam and a plurality of jacking components, the horizontal limiting beams are respectively arranged on two sides of the guide frame, the jacking components are matched with the horizontal limiting beams to limit the horizontal displacement of the guide frame, and the vertical limiting beams horizontally penetrate through the guide frame and are erected on the offshore operation platform or a bearing structure on the offshore operation platform to limit the vertical displacement of the guide frame.
2. The offshore construction method of claim 1, wherein the offshore work platform comprises a plurality of construction frames for construction, a connection frame for connecting the above-water structure, and at least two support beams for supporting the construction frames and connection frames; the step S1 includes:
s11, arranging the supporting beams on two sides of the water structure, and fixedly mounting the supporting beams on the water structure;
s12, mounting the connecting frame on the supporting beam;
and S13, installing a plurality of construction frames on the supporting beams, wherein two ends of the construction frames are respectively connected with the supporting beams on two sides.
3. The offshore construction method of claim 2, wherein the connection frame is provided around the bridge pier, and the connection frame includes a first beam having the same extension direction as the support beam and a second beam having a direction perpendicular to the extension direction of the support beam, and the connection frame is installed by first installing the second beam to the support beam and then installing the first beam to the support beam in step S12;
and/or, along the length direction of the supporting beam, the connecting frame is arranged in the middle of the supporting beam, and a plurality of construction frames are respectively arranged at two ends of the supporting beam; in step S13, the construction frame close to the connection frame is installed first, and then the construction frame far from the connection frame is installed.
4. The offshore construction method of claim 2, wherein a plurality of the construction frames are spaced apart in step S13, and the guide frames are installed in spaces between adjacent construction frames.
5. The offshore construction method of claim 4, wherein the step S1 further comprises:
s14, installing at least one connecting beam in the interval between the adjacent construction frames, wherein two ends of the connecting beam are respectively connected with the adjacent construction frames.
6. The offshore construction method as claimed in claim 5, wherein the connection beam partitions the space into at least two lowering points in step S14, both ends of the connection beam are detachably connected to the construction frames at both sides, respectively,
or alternatively, the first and second heat exchangers may be,
one end of the connecting beam is rotatably connected with the construction frame, and the other end of the connecting beam is detachably connected with the adjacent construction frame.
7. The offshore construction method of claim 5, wherein the step S1 further comprises:
and S15, mounting a fixing device for fixing the guide frame on one side of the construction frame facing the interval.
8. The offshore construction method of claim 7, wherein at least two piers are provided along the width direction of the bridge, and the offshore working platform is provided at each of the piers; the step S1 further includes:
s16, installing a side stand between the adjacent offshore operation platforms.
9. The offshore construction method of claim 1, wherein the offshore construction method further comprises:
s5, after the construction of one place is completed, moving the guide frame and the construction pipeline to another lowering point;
s6, injecting construction materials into the construction pipeline;
s7, repeating the steps S5-S6 until the construction of the complete lowering point is completed;
s8, dismantling the construction pipeline, the guide frame and the offshore operation platform according to the reverse sequence of the installation sequence.
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| CN202210567304.0A CN114737494B (en) | 2022-05-23 | 2022-05-23 | Offshore construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4625532B1 (en) * | 2009-08-26 | 2011-02-02 | 株式会社イスミック | Construction method of temporary closing structure around bridge pier and platform used for construction |
| CN105386408B (en) * | 2015-11-02 | 2017-01-25 | 中交第二航务工程局有限公司 | Deep-water bridge pile foundation construction method |
| CN214168794U (en) * | 2020-12-29 | 2021-09-10 | 中铁一局集团有限公司 | Hoisting device for bridge water surface pile tie beam |
| CN113026792B (en) * | 2021-03-29 | 2022-08-19 | 长江勘测规划设计研究有限责任公司 | Local settlement reinforcing structure and reinforcing method for bridge pile foundation construction steel platform |
| CN113279341A (en) * | 2021-06-29 | 2021-08-20 | 中交路桥华东工程有限公司 | Bridge resetting support and bridge resetting method |
| CN113481883B (en) * | 2021-07-17 | 2022-11-01 | 山东省高速路桥养护有限公司 | Reinforcing and reinforcing construction method for bridge underwater structure |
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