CN113152300A - Working platform unit, working platform and construction method for ultra-long large-diameter pile foundation in water - Google Patents
Working platform unit, working platform and construction method for ultra-long large-diameter pile foundation in water Download PDFInfo
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- CN113152300A CN113152300A CN202110451309.2A CN202110451309A CN113152300A CN 113152300 A CN113152300 A CN 113152300A CN 202110451309 A CN202110451309 A CN 202110451309A CN 113152300 A CN113152300 A CN 113152300A
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- guide frame
- positioning guide
- cantilever positioning
- pile foundation
- support
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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
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
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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
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
Abstract
The invention belongs to the technical field of underwater pile foundation construction. The utility model discloses an overlength major diameter pile foundation underwater operation platform unit, including support barrel and cantilever location leading truck be provided with the direction subassembly on the cantilever location leading truck, the direction subassembly is used for right support barrel carries out radial spacing support, is provided with supporting component on support barrel, and supporting component is used for right cantilever location leading truck supports. Also discloses an underwater operation platform for the ultra-long large-diameter pile foundation and a construction method. This application overall arrangement is reasonable, can effectively solve the problem that current overlength major diameter pile foundation work platform construction exists, improves the stability and the efficiency of construction of structure, can realize the modularization and arrange, is more convenient for construct and to the structure stability control.
Description
Technical Field
The invention belongs to the technical field of underwater pile foundation construction, and particularly relates to an underwater operation platform unit, an operation platform and a construction method for an overlong large-diameter pile foundation.
Background
The pile foundation serves as a load-bearing structure of the bridge and bears the entire load of the superstructure. The steel pipe pile or the cast-in-situ bored pile is used as a common deep foundation form, is widely applied to bridge pile foundation construction with high bearing capacity, and is particularly widely applied to underwater engineering. For the construction operation of the underwater pile foundation, a platform is usually erected or a cofferdam is built on a horizontal plane, and then the construction operation of the pile foundation is carried out. At present, the construction of the bridge pile foundation is assisted by a large floating crane ship or a pile driving ship, but the large floating crane ship cannot adapt to some closed water areas and is higher in cost.
Disclosure of Invention
The invention aims to solve the problems and the defects, and provides an underwater operation platform unit, an operation platform and a construction method for an ultra-long large-diameter pile foundation, which are reasonable in overall arrangement, can effectively solve the problems of the existing construction of the ultra-long large-diameter pile foundation operation platform, improve the stability and the construction efficiency of a structure, can realize modular arrangement, and are more convenient to construct and control the stability of the structure.
In order to realize the purpose, the adopted technical scheme is as follows:
an overlength major diameter pile foundation underwater operation platform unit includes:
a support cylinder; and
the cantilever positioning guide frame is provided with a guide assembly, and the guide assembly is used for carrying out radial limiting support on the support cylinder; and the support barrel is provided with a support assembly, and the support assembly is used for supporting the cantilever positioning guide frame.
According to the overlength large diameter pile foundation underwater operation platform unit of the invention, preferably, the guide assembly comprises:
the power push rods are distributed on the cantilever positioning guide frame in multiple groups; and
and the end part of each power push rod is uniformly provided with a guide roller, and each guide roller and the support cylinder are attached and supported.
According to the super-long large-diameter pile foundation underwater operation platform unit, preferably, the power push rods are jacks or hydraulic cylinders, the power push rods are obliquely arranged on the cantilever positioning guide frame, two groups of power push rods corresponding up and down are distributed on the cantilever positioning guide frame, and each group of power push rods at least comprises four power push rods; the supporting cylinder body is a steel casing or a steel pipe pile.
According to the working platform unit in water for the ultra-long large-diameter pile foundation of the invention, preferably, the cantilever positioning guide frame comprises:
the guide frame body is of a U-shaped structure; and
and the locking pull rod is arranged at the U-shaped opening of the guide frame body, and the two sides of the side wall of the guide frame body correspond to the locking pull rod and are provided with limiting nuts.
According to the overlength large-diameter pile foundation underwater operation platform unit, preferably, the support assembly comprises a support block fixedly arranged on the support cylinder body, and the support block is propped against the lower part of the cantilever positioning guide frame or the support block is propped against the lower part of the guide assembly.
An overlength major diameter pile foundation underwater operation platform includes:
according to the super-long and large-diameter pile foundation underwater operation platform unit, a plurality of groups of super-long and large-diameter pile foundation underwater operation platform units are arranged in water;
the extension platform frame is arranged between two adjacent ultra-long and large-diameter pile foundation underwater operation platform units, and the extension platform frame is fixedly connected with at least one adjacent ultra-long and large-diameter pile foundation underwater operation platform unit; and
and the reinforcing connecting rod assemblies are uniformly distributed between two adjacent supporting cylinders.
According to the working platform in water for the ultra-long large-diameter pile foundation, preferably, the reinforcing connecting rod assembly comprises:
a connecting rod; and
the arc-shaped hoop is fixedly arranged on the support cylinder body, connecting lugs are arranged on the arc-shaped hoop, and the end parts of the connecting rods are connected with the corresponding connecting lugs on the arc-shaped hoop;
and a plurality of connecting rods are arranged between the two supporting cylinder bodies and are arranged in parallel or/and in a cross way.
According to the overlength large-diameter pile foundation underwater operation platform, preferably, the support cylinder bodies on the upper side and the lower side of each arc-shaped hoop are respectively provided with a limiting block, two ends of each connecting rod are provided with a connecting ring, the connecting rings are provided with connecting ring ribs, the connecting lugs are provided with lug ribs, and the connecting ring ribs and the lug ribs are correspondingly meshed; the mud pit is hung at the lower part of the extending platform frame and/or the cantilever positioning guide frame, and a partition plate, a mud pump and a mud conveying pipe are arranged in the mud pit; and the upper parts of the extension platform frame and the cantilever positioning guide frame are paved with a skid and a support plate.
A construction method of an underwater operation platform for an overlong large-diameter pile foundation is used for constructing the underwater operation platform for the overlong large-diameter pile foundation and specifically comprises the following steps:
a. an auxiliary platform is erected above the water surface and is independently supported on the riverbed;
b. taking an auxiliary platform as an initial working surface, installing a first section of cantilever positioning guide frame, arranging a supporting cylinder body in the middle of the cantilever positioning guide frame, and fixing the cantilever positioning guide frame on the auxiliary platform in a supporting manner; after the cantilever positioning guide frame is installed in place, adjusting a guide assembly on the cantilever positioning guide frame to enable the support cylinder to be in a vertical state;
c. the supporting cylinder is driven into the riverbed by depending on the auxiliary platform, and the guiding assembly positions the supporting cylinder; after the supporting cylinder is driven into place, the cantilever positioning guide frame is supported and arranged on the supporting cylinder through the supporting assembly;
d. the next section of cantilever positioning guide frame is fixedly installed by relying on the stably supported cantilever positioning guide frame; repeating the step b to complete the adjustment of the section of cantilever positioning guide frame and the support cylinder; c, repeating the step c, driving the support cylinder into the riverbed, and supporting the cantilever positioning guide frame of the section through the support assembly;
e. a reinforcing connecting rod assembly is arranged between two adjacent supporting cylinders, so that the stability of the structure is improved;
f. and d, repeating the steps d and e, and erecting an operation platform by depending on the cantilever positioning guide frame and the support cylinder in the ultra-large and large diameter pile foundation underwater operation platform unit.
According to the construction method of the underwater operation platform with the ultra-long large-diameter pile foundation, preferably, in the step d, an extension platform frame is paved by relying on the cantilever positioning guide frame which supports the extension platform frame in place, and then the cantilever positioning guide frame for fixing the next section is installed by relying on the extension platform frame; and e, hanging and arranging a multi-stage mud pit below the erected cantilever positioning guide frame.
By adopting the technical scheme, the beneficial effects are as follows:
this application overall arrangement is reasonable, can effectively solve the problem that current overlength major diameter pile foundation work platform construction exists, improves the stability and the efficiency of construction of structure, can realize the modularization and arrange, is more convenient for construct and to the structure stability control.
The utility model provides a setting of direction subassembly, through set up point-contact guide jack on cantilever location leading truck, for the implantation of supporting the barrel provides reliable and stable location and guide effect, improve the implantation precision of supporting the barrel, guarantee the supporting capacity and the stability of the operation platform overall structure of follow-up construction, this application adopts modularization assembled structure, be more convenient for carry out high-efficient operation, greatly reduced the risk and the process of operation, make whole work progress easily control more, guarantee construction quality and efficiency.
This application is in the back of taking one's place supporting the barrel implantation, thereby set up the support that the cantilever location leading truck was accomplished to the supporting component, through set up the wedge support on supporting the barrel, point contact direction jack supports at the wedge support, cantilever location leading truck uses the support barrel to set up construction work platform as supporting, makes holistic assembly more simple and convenient, whole modular assembly, spare part is less, is more convenient for carry out the control to the precision and the quality of construction, and the reliability is higher.
The underwater operation platform for the ultra-long large-diameter pile foundation adopts modular arrangement construction, meanwhile, the cantilever positioning guide frame also adopts a modular splicing process, the support cylinder is implanted in place and then used as a support to be locked, and then the next section of cantilever positioning guide frame is extended forwards, so that the whole construction can be gradually promoted; this application still links fixedly to adjacent support barrel through strengthening link assembly, further improves steel casing or steel-pipe pile's stability.
This application still through hanging the mud pit in the platform below, can reduce the occupation to plane operation space, improves construction operation efficiency. The space area of the operation platform can be fully utilized, the reasonable partitioning of the platform is realized, and the subsequent construction operation is more convenient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. Wherein the drawings are only for purposes of illustrating some embodiments of the invention and are not to be construed as limiting the invention to all embodiments thereof.
FIG. 1 is a schematic diagram of a boom positioning guide according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a point-contact type guiding jack according to an embodiment of the present invention;
FIG. 3 is a schematic three-dimensional structure of a point-contact guiding jack according to an embodiment of the present invention;
FIG. 4 is a schematic view of a working state plane structure of a cantilever positioning guide according to an embodiment of the present invention;
FIG. 5 is a schematic side view of a cantilever positioning guide according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a boom positioning guide lock configuration according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of an auxiliary platform arranged by supporting a steel casing and a cantilever positioning guide frame according to an embodiment of the invention;
FIG. 8 is a schematic view of a planar structure of an auxiliary platform for positioning a cantilever positioning guide frame by means of a support cylinder according to an embodiment of the present invention;
FIG. 9 is a schematic view of a support cylinder parallel coupling structure according to an embodiment of the present invention;
FIG. 10 is a schematic three-dimensional structure of a connecting rod according to an embodiment of the invention;
FIG. 11 is a schematic view of a connecting rod assembly according to an embodiment of the present invention;
FIG. 12 is a schematic three-dimensional structure diagram of an arc-shaped hoop according to an embodiment of the present invention;
fig. 13 is a schematic structural view illustrating the installation of the arc-shaped hoop on the support cylinder according to the embodiment of the invention.
Number in the figure:
1-riverbed, 11-water surface, 2-auxiliary platform, 21-vertical support, 22-connecting beam, 23-support, 24-Bailey beam, 25-square skid, 26-support plate, 3-cantilever positioning guide frame, 31-Bailey beam support, 32-fore shaft pull rod, 33-limit nut, 34-point contact type guide jack, 35-roller support, 36-bearing, 37-guide roller, 41-pile cap, 42-steel pile casing, 43-steel pipe pile, 44-wedge support, 45-extending platform frame, 6-connecting rod, 61-connecting ring, 62-connecting ring rib, 63-first bolt, 64-second bolt, 71-arc hoop, 72-connecting wing plate, 73-bolt hole, 74-third bolt, 75-connecting lug, 76-lug rib, 77-limiting block, 8-multistage mud pit, 81-partition plate, 82-lifting rope, 83-mud pump and 84-mud conveying pipe.
Detailed Description
Illustrative aspects of embodiments of the invention are described more fully hereinafter with reference to the accompanying drawings, in which specific embodiments of the invention are shown. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art.
In the description of the present invention, it should be understood that the terms "first" and "second" are used to describe various elements of the invention, and are not intended to limit any order, quantity, or importance, but rather are used to distinguish one element from another.
It should be noted that when an element is referred to as being "connected," "coupled," or "connected" to another element, it can be directly connected, coupled, or connected, but it is understood that intervening elements may be present therebetween; i.e., positional relationships encompassing both direct and indirect connections.
It should be noted that the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
It should be noted that terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", and the like, are used only for indicating relative positional relationship, which is for convenience in describing the present invention, and do not indicate that the device or element must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the object to be described is changed, the relative positional relationship may also be changed accordingly.
Referring to fig. 1-13, the application discloses an underwater operation platform unit for an ultra-long large-diameter pile foundation, which comprises a support cylinder and a cantilever positioning guide frame 3, wherein the support cylinder can adopt a steel casing 42 or a steel pipe pile 43; in order to ensure that the support cylinder body can achieve a good adjusting and guiding effect relative to the cantilever positioning guide frame 3, the cantilever positioning guide frame 3 is provided with a guide assembly, and the guide assembly is used for radially limiting and supporting the support cylinder body so that the support cylinder body can be kept in a vertical state when being driven into a riverbed; still be provided with supporting component on supporting the barrel, supporting component is used for right cantilever location leading truck 3 supports, promptly when supporting the barrel and squeeze into the riverbed after, supports cantilever location leading truck 3 by supporting the barrel to form the good operation platform's of structural stability unit module.
Preferably, the cantilever positioning guide frame in this embodiment includes a guide frame body and a locking pull rod 32, and the guide frame body is in a U-shaped structure; the fore shaft pull rod is arranged at the U-shaped opening of the guide frame body, and the two sides of the side wall of the guide frame body correspond to the fore shaft pull rod and are respectively provided with a limiting nut 33. The guide assembly comprises power push rods and guide rollers 37, wherein a plurality of groups of power push rods are arranged on the cantilever positioning guide frame 3; and guide rollers 37 are uniformly distributed at the end parts of the power push rods, and the guide rollers 37 and the support cylinder body are attached and supported. The power push rod is jack or pneumatic cylinder, preferably, power push rod in this application adopts point-contact direction jack 34, the power push rod slope sets up on the cantilever location leading truck 3 it corresponds power push rod from top to bottom to lay two sets of on the cantilever location leading truck 3, and every group power push rod includes four power push rods at least. The supporting assembly comprises a supporting block fixedly arranged on the supporting barrel body, and the supporting block is propped against the lower portion of the cantilever positioning guide frame or against the lower portion of the guiding assembly.
For the above structure, the arrangement and connection mode in the practical application process are further described in detail, as shown in fig. 1, the guide frame body of the cantilever positioning guide frame 3 of the present application is a bailey beam support 31, the bailey beam support 31 is spliced by using bailey beams 24, the plane is of an "open" structure, one side of the opening is provided with a fore shaft pull rod 32 and a limit nut 33, the "open" bailey beam support 31 is assisted and fixed through the fore shaft pull rod 32 and the limit nut 33, and the overall strength of the structure is enhanced; in the initial stage, the cantilever positioning guide frame 3 is mounted by depending on an auxiliary platform, and the support cylinder is implanted into the riverbed 1 by depending on the cantilever positioning guide frame 3; after the supporting cylinder is installed in place, welding a supporting block on the supporting cylinder, wherein in order to be matched with the point contact type guide jack, a wedge-shaped support 44 is adopted as the supporting block, and the wedge-shaped support 44 is tightly attached to the point contact type guide jack 34; the cantilever positioning guide frame 3 is stably supported on the support cylinder through the point contact type guide jack 34 and the wedge-shaped support 44 after the support cylinder is implanted into position.
As shown in fig. 2 and fig. 3, the point-contact type guiding jack 34 is fixed on the bailey beam bracket 31; the supporting cylinder is driven into the riverbed 1 along the constraint of the cantilever positioning guide frame 3; the end of the point contact type guide jack 34 is provided with a guide roller 37, the guide roller 37 is fixed at the end of the point contact type guide jack 34 through a roller bracket 35 and a bearing 36, the guide roller 37 is tightly attached to the outer surface of the support cylinder body to assist in guiding and positioning the support cylinder body during implantation, and meanwhile, after the support cylinder body is implanted in place, the support cylinder body is welded on a wedge-shaped support 44, as shown in fig. 6.
The application also discloses an underwater operation platform for the ultra-long large-diameter pile foundation, which comprises the above-mentioned underwater operation platform unit for the ultra-long large-diameter pile foundation, an extension platform frame and a reinforcing connecting rod assembly, wherein a plurality of groups of the underwater operation platform units for the ultra-long large-diameter pile foundation are arranged in water; the extension platform frame is arranged between two adjacent ultra-long large-diameter pile foundation underwater operation platform units, and the extension platform frame is fixedly connected with at least one adjacent ultra-long large-diameter pile foundation underwater operation platform unit; and reinforcing connecting rod assemblies are uniformly distributed between two adjacent supporting cylinders.
The reinforcing connecting rod assembly comprises a connecting rod and an arc-shaped hoop, the arc-shaped hoop is fixedly arranged on the supporting barrel, connecting lugs are arranged on the arc-shaped hoop, and the end parts of the connecting rod are connected with the corresponding connecting lugs on the arc-shaped hoop; and a plurality of connecting rods are arranged between the two supporting cylinder bodies and are arranged in parallel or/and in a cross way. Limiting blocks are arranged on the supporting cylinder bodies on the upper side and the lower side of each arc-shaped hoop; the mud pit is hung at the lower part of the extending platform frame and/or the cantilever positioning guide frame, and a partition plate, a mud pump and a mud conveying pipe are arranged in the mud pit; and the upper parts of the extension platform frame and the cantilever positioning guide frame are paved with a skid and a support plate.
As shown in fig. 7 and 8, the extension platform frame 45 is erected by the cantilever positioning guide frame 3; the extension platform frame 45 is supported on the cantilever positioning guide frame 3, and is laid with the square paddings 25 and the support plate 26, the extension platform frame 45 is used as the installation platform of the next section of cantilever positioning guide frame 3 and the implantation guide platform of the next support cylinder, and because the steel pile casing or the steel pipe pile adopted by the support cylinder is provided with the pile cap 41 for the convenience of operation, the corresponding steel pile casing or the corresponding steel pipe pile is driven into the riverbed 1 through the pile driver.
As shown in fig. 9, the connecting rod 6 is arranged between two supporting cylinders which are installed in place, the connecting rod 6 is connected with an arc-shaped hoop 71, and the arc-shaped hoop 71 is installed on the supporting cylinders; the arc-shaped hoop 71 is semicircular, the two sides of the arc-shaped hoop 71 are provided with connecting wing plates 72, the connecting wing plates 72 are provided with bolt holes 73, and a third bolt 74 penetrates through the bolt holes 73 to combine the two arc-shaped hoops 71 into a closed circular ring to be arranged on the supporting cylinder body; the arc-shaped hoop 71 is provided with a connecting lug 75, and the connecting lug 75 is provided with a radial ear ring rib 76. The steel casing 42 or the steel pipe pile 43 is provided with a limiting block 77, and the limiting block 77 is tightly attached to the upper end and the lower end of the arc-shaped hoop 71, so that the arc-shaped hoop 71 is prevented from sliding up and down along the steel casing 42 or the steel pipe pile 43.
As shown in fig. 10 and 11, the connecting rod 6 has connecting rings 61 at the end and middle portions thereof, and the connecting rings 61 have radial connecting ring ribs 62; the end part of the connecting rod 6 is connected with the arc-shaped hoop 71, the second bolt 64 penetrates through the connecting ring 61 and the connecting lug 75 at the end part, and the connecting ring rib 62 is mutually meshed with the lug rib 76; the connecting rods 75 are crossed with each other, the first bolt 63 passes through the connecting ring 61 at the middle part of the connecting rod 6, and the connecting ring ribs 62 on the connecting ring 61 are meshed with each other; the connecting ring ribs 62 and the earring ribs 76 can effectively prevent the rod pieces from rotating after connection, and the firmness of the connection of the rod pieces is improved, so that the stability of the steel casing 42 or the steel pipe pile 43 is indirectly improved.
As shown in fig. 7, the multistage mud pit 8 is suspended below the platform by a lifting rope 82, the multistage mud pit 8 is provided with a partition plate 81 with different heights, a mud pump 83 and a mud conveying pipe 84, the partition plate 81 divides the mud pit 8 into a plurality of different multistage filtering spaces, and the mud pump 83 and the mud conveying pipe 84 are matched to convey mud into pile holes, so that the space occupied on the surface of the platform is avoided by suspending the multistage mud pit 8 on the water surface 11 below the platform.
The application also discloses a construction method of the super-long large-diameter pile foundation underwater operation platform, which is used for the construction of the super-long large-diameter pile foundation underwater operation platform and specifically comprises the following steps:
a. an auxiliary platform is erected above the water surface and is independently supported on the riverbed; as shown in the attached figures 4 and 5, before the construction operation of the underwater pile foundation, an auxiliary platform 2 is erected above the water surface 11, and the auxiliary platform 2 is independently supported on a river bed 1; the auxiliary platform 2 comprises a vertical support 21, a connecting beam 22, a support 23, a Bailey beam 24, a square skid 25 and a support plate 26; the connecting beam 22 is arranged between the vertical supports 21, the support 23 is arranged at the top of each vertical support 21, the Bailey beam 24 is supported on the support 23, the square skid 25 is supported on the Bailey beam 24, the support plate 26 is laid on the square skid 25, the auxiliary platform 2 serves as a starting platform for underwater construction of the pile foundation, and the first-section cantilever positioning guide frame 3 is attached to the auxiliary platform 2 for installation.
b. Taking an auxiliary platform as an initial working surface, installing a first section of cantilever positioning guide frame, arranging a supporting cylinder body in the middle of the cantilever positioning guide frame, and fixing the cantilever positioning guide frame on the auxiliary platform in a supporting manner; after the cantilever positioning guide frame is installed in place, adjusting a guide assembly on the cantilever positioning guide frame to enable the support cylinder to be in a vertical state; specifically, the supporting cylinder is supported and adjusted by the guide rollers by adjusting the telescopic amount of each point-contact type guide jack in the guide assembly, so that the supporting cylinder is kept in a vertical state, and the supporting cylinder is better in stability and higher in acting force after being implanted into a riverbed;
c. the supporting cylinder is driven into the riverbed by depending on the auxiliary platform, and the guiding assembly positions the supporting cylinder; after the supporting cylinder is driven into place, the cantilever positioning guide frame is supported and arranged on the supporting cylinder through the supporting assembly; as shown in fig. 4 and 5, a steel casing 42 or a steel pipe pile 43 is driven into the river bed 1 by the aid of the auxiliary platform 2, and the point-contact type guide jack 34 positions the steel casing 42 or the steel pipe pile 43; after the steel casing 42 or the steel pipe pile 43 is driven into place, welding a wedge-shaped support 44 on the side wall of the steel casing 42 or the steel pipe pile 43, wherein the wedge-shaped support 44 is tightly attached to the lower side of the point contact type guide jack 34, and the cantilever positioning guide frame 3 is supported on the wedge-shaped support 44 on the side wall of the steel casing 42 or the steel pipe pile 43 through the point contact type guide jack 34; the pile cap 41 is arranged on the steel pile casing 42 or the steel pipe pile 43, and the steel pile casing 42 or the steel pipe pile 43 is driven into the riverbed 1 through a pile driver; as shown in fig. 6, the wedge-shaped support 44 abuts against the point-contact type guide jack 34; after the cantilever positioning guide frame 3 is implanted in place in the steel casing 42 or the steel pipe pile 43, the cantilever positioning guide frame is supported on the steel casing 42 or the steel pipe pile 43 through the point-contact type guide jack 34;
d. the next section of cantilever positioning guide frame is fixedly installed by relying on the stably supported cantilever positioning guide frame; repeating the step b to complete the adjustment of the section of cantilever positioning guide frame and the support cylinder; c, repeating the step c, driving the support cylinder into the riverbed, and supporting the cantilever positioning guide frame of the section through the support assembly;
in step d, as shown in fig. 7, an extension platform frame may be laid by supporting the cantilever positioning guide frame in place, and then the cantilever positioning guide frame of the next segment is mounted and fixed by supporting the extension platform frame, and the extension platform frame 45 is laid by supporting the cantilever positioning guide frame 3 in place at a specific position; the extending platform frame 45 is supported on the cantilever positioning guide frame 3, and is laid with the square skid 25 and the support plate 26 to be erected, and the extending platform frame 45 is used as a mounting platform of the next section of cantilever positioning guide frame 3 and an implantation guide platform of the next steel pile casing 42 or steel pipe pile 43; as shown in fig. 7 and 8, the next section of the cantilever positioning guide frame 3 is installed by relying on the extending platform frame 45, the cantilever positioning guide frame 3 is fixedly installed by depending on the extending platform frame, and the point-contact type guide jack 34 is adjusted according to the method in the step b. And c, driving a steel casing 42 or a steel pipe pile 43 into the riverbed 1 by using the extending platform frame 45 as a working platform according to the method in the step c, and supporting the cantilever positioning guide frame 3 on a wedge-shaped support 44 on the steel casing 42 or the steel pipe pile 43.
e. A reinforcing connecting rod assembly is arranged between two adjacent supporting cylinders, so that the stability of the structure is improved;
f. and d, repeating the steps d and e, and erecting an operation platform by depending on the cantilever positioning guide frame and the support cylinder in the ultra-large and large diameter pile foundation underwater operation platform unit.
In step e, a multistage mud pit can be hung below the erected cantilever positioning guide frame.
The term "and/or" herein means that three relationships may exist. For example, a and/or B may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.
While the preferred embodiments for carrying out the invention have been described in detail, it should be understood that they have been presented by way of example only, and not limitation as to the scope, applicability, or configuration of the invention in any way. The scope of the invention is defined by the appended claims and equivalents thereof. Many modifications may be made to the foregoing embodiments by those skilled in the art, which modifications are within the scope of the present invention.
Claims (10)
1. The utility model provides an overlength major diameter pile foundation underwater operation platform unit, its characterized in that includes:
a support cylinder; and
the cantilever positioning guide frame is provided with a guide assembly, and the guide assembly is used for carrying out radial limiting support on the support cylinder; and the support barrel is provided with a support assembly, and the support assembly is used for supporting the cantilever positioning guide frame.
2. The overlength major diameter pile foundation underwater work platform unit of claim 1, wherein the guide assembly comprises:
the power push rods are distributed on the cantilever positioning guide frame in multiple groups; and
and the end part of each power push rod is uniformly provided with a guide roller, and each guide roller and the support cylinder are attached and supported.
3. The underwater operation platform unit for the overlong large-diameter pile foundation according to claim 2, wherein the power push rods are jacks or hydraulic cylinders, the power push rods are obliquely arranged on the cantilever positioning guide frame, two groups of power push rods corresponding up and down are arranged on the cantilever positioning guide frame, and each group of power push rods at least comprises four power push rods; the supporting cylinder body is a steel casing or a steel pipe pile.
4. The overlength major diameter pile foundation underwater work platform unit of claim 1, wherein the cantilever positioning guide frame comprises:
the guide frame body is of a U-shaped structure; and
and the locking pull rod is arranged at the U-shaped opening of the guide frame body, and the two sides of the side wall of the guide frame body correspond to the locking pull rod and are provided with limiting nuts.
5. The overlength large-diameter pile foundation underwater operation platform unit according to claim 1, wherein the support assembly comprises a support block fixedly arranged on the support cylinder body, and the support block is propped against the lower portion of the cantilever positioning guide frame or the support block is propped against the lower portion of the guide assembly.
6. The utility model provides an overlength major diameter pile foundation underwater operation platform which characterized in that includes:
the underwater operation platform unit for the overlong and large-diameter pile foundations as claimed in any one of claims 1 to 5, wherein a plurality of groups of the underwater operation platform units for the overlong and large-diameter pile foundations are arranged in water;
the extension platform frame is arranged between two adjacent ultra-long and large-diameter pile foundation underwater operation platform units, and the extension platform frame is fixedly connected with at least one adjacent ultra-long and large-diameter pile foundation underwater operation platform unit; and
and the reinforcing connecting rod assemblies are uniformly distributed between two adjacent supporting cylinders.
7. The overlength major diameter pile foundation underwater work platform of claim 6, wherein the reinforcing link assembly comprises:
a connecting rod; and
the arc-shaped hoop is fixedly arranged on the support cylinder body, connecting lugs are arranged on the arc-shaped hoop, and the end parts of the connecting rods are connected with the corresponding connecting lugs on the arc-shaped hoop;
and a plurality of connecting rods are arranged between the two supporting cylinder bodies and are arranged in parallel or/and in a cross way.
8. The overlength large-diameter pile foundation underwater operation platform according to claim 7, wherein limiting blocks are arranged on the support cylinder bodies on the upper side and the lower side of each arc-shaped hoop, connecting rings are arranged at two ends of the connecting rod, connecting ring ribs are arranged on the connecting rings, ear ring ribs are arranged on the connecting lugs, and the connecting ring ribs and the ear ring ribs are correspondingly meshed; the mud pit is hung at the lower part of the extending platform frame and/or the cantilever positioning guide frame, and a partition plate, a mud pump and a mud conveying pipe are arranged in the mud pit; and the upper parts of the extension platform frame and the cantilever positioning guide frame are paved with a skid and a support plate.
9. A construction method of an underwater operation platform for an overlong large-diameter pile foundation is characterized in that the construction of the underwater operation platform for the overlong large-diameter pile foundation according to any one of claims 6 to 8 is carried out, and the construction method specifically comprises the following steps:
an auxiliary platform is erected above the water surface and is independently supported on the riverbed;
taking an auxiliary platform as an initial working surface, installing a first section of cantilever positioning guide frame, arranging a supporting cylinder body in the middle of the cantilever positioning guide frame, and fixing the cantilever positioning guide frame on the auxiliary platform in a supporting manner; after the cantilever positioning guide frame is installed in place, adjusting a guide assembly on the cantilever positioning guide frame to enable the support cylinder to be in a vertical state;
the supporting cylinder is driven into the riverbed by depending on the auxiliary platform, and the guiding assembly positions the supporting cylinder; after the supporting cylinder is driven into place, the cantilever positioning guide frame is supported and arranged on the supporting cylinder through the supporting assembly;
the next section of cantilever positioning guide frame is fixedly installed by relying on the stably supported cantilever positioning guide frame; repeating the step b to complete the adjustment of the section of cantilever positioning guide frame and the support cylinder; c, repeating the step c, driving the support cylinder into the riverbed, and supporting the cantilever positioning guide frame of the section through the support assembly;
a reinforcing connecting rod assembly is arranged between two adjacent supporting cylinders, so that the stability of the structure is improved;
and d, repeating the steps d and e, and erecting an operation platform by depending on the cantilever positioning guide frame and the support cylinder in the ultra-large and large diameter pile foundation underwater operation platform unit.
10. The construction method of the ultra-long large-diameter pile foundation underwater operation platform according to claim 9, characterized in that in the step d, an extension platform frame is laid by relying on the cantilever positioning guide frame which supports the cantilever positioning guide frame in place, and then the cantilever positioning guide frame which fixes the next section is installed by relying on the extension platform frame; and e, hanging and arranging a multi-stage mud pit below the erected cantilever positioning guide frame.
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| CN202110451309.2A CN113152300A (en) | 2021-04-25 | 2021-04-25 | Working platform unit, working platform and construction method for ultra-long large-diameter pile foundation in water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855777A (en) * | 2022-06-15 | 2022-08-05 | 中交三公局第一工程有限公司 | Construction process of reverse circulation pore-forming super-long large-diameter underwater cast-in-place pile |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114855777A (en) * | 2022-06-15 | 2022-08-05 | 中交三公局第一工程有限公司 | Construction process of reverse circulation pore-forming super-long large-diameter underwater cast-in-place pile |
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