CN110777789A - Steel casing guide installation method, pile foundation construction platform and floating crane ship - Google Patents
Steel casing guide installation method, pile foundation construction platform and floating crane ship Download PDFInfo
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- CN110777789A CN110777789A CN201911082940.9A CN201911082940A CN110777789A CN 110777789 A CN110777789 A CN 110777789A CN 201911082940 A CN201911082940 A CN 201911082940A CN 110777789 A CN110777789 A CN 110777789A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/52—Floating cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to a steel casing guide installation method, a pile foundation construction platform and a floating crane ship. According to the invention, the fixed fork head and the movable fork head are mutually matched to realize radial restraint, the end part of the fixed fork head is opened, so that a steel protective cylinder can conveniently transversely enter, the steel protective cylinder does not need to be guided and lowered from a high position, the safety performance is improved, the installation difficulty is reduced, the end part of the movable fork head is opened, the steel protective cylinder can conveniently exit from the movable fork head, and the assembly efficiency is improved.
Description
Technical Field
The invention relates to a steel casing guide installation method, a pile foundation construction platform and a floating crane ship.
Background
In the construction of large-span bridges, the mode of drilling and pouring pile foundations is widely applied. The pile foundation construction platform is a precondition for pile foundation construction in water, and provides a water field for constructors, equipment operation and machine material stacking.
In the construction process of the construction platform, the steel pipe pile and the steel pile casing are required to be built, and the cross beam and the flat plate are built on the steel pipe pile and the steel pile casing to form the construction platform step by step. When the steel pile casing is built, a guide frame is mostly fixed on a built partial platform, then the steel pile casing is sunk into a riverbed along the guide frame from top to bottom by utilizing a crawler crane or a floating crane ship, the steel pile casing and the guide frame are welded and fixed, preliminary fixation is realized, and the steel pile casing is driven to enter a rock to be fixed through an impact hammer in the follow-up process so as to be used for pile driving construction in the follow-up process.
This kind of from top to bottom transfer the mode that a steel protected a section of thick bamboo through the leading truck direction is fit for being applied to the steel and protects a short occasion of a section of thick bamboo, and the steel protects a section of thick bamboo if longer, and it is very high to play, if construction environment is abominable when wind-force is great, and it is comparatively difficult to transfer accurately, also causes the incident easily.
Disclosure of Invention
The invention aims to provide a guide installation method of a steel casing, which aims to solve the technical problem that the steel casing is not suitable for being guided and lowered by a long steel casing in the prior art in a way of lowering the steel casing through a guide frame from top to bottom; meanwhile, the invention also provides a pile foundation construction platform and a floating crane ship which are matched with each other to realize the guiding installation of the steel casing.
In order to achieve the aim, the technical scheme of the guide installation method of the steel casing provided by the invention is as follows: a guide installation method for a steel casing comprises the following steps:
(1) respectively arranging fixed positioning frames corresponding to the steel casing cylinders to be installed on the construction platform, wherein each fixed positioning frame comprises a fixed fork-shaped head, and the corresponding end of each fixed fork-shaped head is opened for the steel casing cylinder to transversely enter;
(2) hoisting and conveying the steel casing by using a floating crane, wherein the floating crane is provided with a movable positioning frame, the movable positioning frame comprises a movable fork-shaped head, the corresponding end of the movable fork-shaped head is opened to allow the steel casing to transversely withdraw, and the movable fork-shaped head corresponds to a lifting appliance on the floating crane up and down to enable the steel casing to be vertically hoisted;
(3) when the floating crane ship hoists and conveys the steel protecting cylinder to a corresponding fixed positioning frame, the floating crane ship transversely conveys the steel protecting cylinder in a vertical hoisting posture into a fixed fork head, the fixed fork head and a movable fork head which are staggered in the vertical direction are mutually matched to form constraint in the radial direction of the steel protecting cylinder, so that the steel protecting cylinder is constrained and positioned at a preset steel protecting cylinder mounting position, and the fixed fork head and the movable fork head guide the steel protecting cylinder to descend into a riverbed;
(4) and fixing the steel casing on the construction platform, and enabling the floating crane ship to drive the movable positioning frame to retreat so as to enable the steel casing to withdraw from the movable fork head, thus finishing the guiding installation of the steel casing.
The beneficial effects are that: in the steel casing guiding and mounting method, the corresponding ends of the fixed fork head and the movable fork head are both opened, when the floating crane ship horizontally and transversely sends the steel casing in a vertical hoisting posture into the fixed fork head, the fixed fork head and the movable fork head are matched with each other to right the steel casing, so that the radial constraint of the steel casing is provided, and the guiding is provided in the axial direction, namely the up-down direction, of the steel casing. Corresponding to the radial direction of the steel casing, the fixed fork head provides partial restraint, the movable fork head provides partial restraint, the fixed fork head and the movable fork head are matched with each other, the radial omnibearing restraint of the steel casing is realized, and the problem that the steel casing is toppled due to the fact that the restraint is not in place is effectively avoided. And the end part of the fixed fork head is opened, so that the steel protection cylinder can conveniently transversely enter, the steel protection cylinder does not need to be guided and lowered from a high position, the safety performance is improved, the installation difficulty is reduced, the end part of the movable fork head is opened, the steel protection cylinder can conveniently withdraw from the movable fork head, and the assembly efficiency is improved.
As a further optimized scheme: the fixed positioning frames are arranged at least two corresponding to the steel protective cylinders to be installed at intervals along the vertical direction to form a fixed positioning frame group, and the fixed fork-shaped heads of the fixed positioning frames belonging to the same fixed positioning frame group are arranged in an up-and-down alignment mode.
The beneficial effects are that: the fixed positioning frame group is formed by more than two fixed positioning frames which are arranged at intervals up and down, and multipoint constraint is provided in the up-down direction, so that the volume of a single fixed positioning frame can be reduced, and effective constraint positioning can be realized in the up-down direction more conveniently.
The technical scheme of the pile foundation construction platform for realizing the steel casing guiding installation method provided by the invention is as follows:
a pile foundation construction platform comprising:
a construction platform;
the fixed positioning frame is fixedly arranged on the construction platform, corresponds to the position where the steel casing is preset to be installed, and is used for positioning and installing the steel casing;
the fixed positioning frame comprises a fixed fork-shaped head, and the corresponding end of the fixed fork-shaped head, which is far away from the construction platform, is of an open structure so that a steel casing can transversely enter the open structure;
the inner peripheral surface of the fixed fork head comprises a guide restraining surface which is used for guiding the steel protecting cylinder to enter a riverbed in the up-down direction and is matched with the movable fork head of the movable positioning frame on the corresponding floating crane ship to form restraint in the radial direction of the steel protecting cylinder, so that the steel protecting cylinder is restrained and positioned at a preset steel protecting cylinder mounting position.
The beneficial effects are that: the fixed positioning frame is arranged at the corresponding position of the construction platform, and the corresponding end of the fixed fork head of the fixed positioning frame is opened so as to be matched with the movable fork head of the corresponding floating crane ship to realize the radial all-dimensional constraint on the steel casing, thereby effectively avoiding the problem of the steel casing toppling caused by the incomplete constraint. And the end part of the fixed fork-shaped head is opened, so that the steel protective cylinder can conveniently transversely enter without guiding and lowering the steel protective cylinder from a high place, the safety performance is improved, and the installation difficulty is reduced.
As a further optimized scheme, more than two fixed positioning frames corresponding to the same steel casing are arranged at intervals along the vertical direction to form a fixed positioning frame group, and the guide constraint surfaces of the fixed fork heads belonging to the same fixed positioning frame group are arranged in alignment.
The beneficial effects are that: the fixed positioning frame group is formed by more than two fixed positioning frames which are arranged at intervals up and down, and multipoint constraint is provided in the up-down direction, so that the volume of a single fixed positioning frame can be reduced, and effective constraint positioning can be realized in the up-down direction more conveniently.
As a further optimized scheme, the guiding and constraining surface comprises side stop side surfaces at two sides and a middle stop side surface between the two side stop side surfaces, and the side stop side surfaces and the middle stop side surface are both planar structures.
The beneficial effects are that: the guide constraint surface comprises two side stop side surfaces and a middle stop side surface, so that three-way constraint is formed, and better positioning constraint performance can be provided.
As a further optimized scheme, the two side stop sides are arranged in parallel and are perpendicular to the middle stop side.
The beneficial effects are that: the side surfaces of the side stop and the side surfaces of the middle stop are vertically arranged, so that the steel casing is convenient to manufacture under the condition of ensuring the transverse entering of the steel casing.
The technical scheme of the floating crane ship for realizing the steel casing guide installation method provided by the invention is as follows:
a floating vessel comprising:
a hull;
the crane is arranged on the ship body and used for hoisting the steel casing;
the movable positioning frame is fixedly arranged on the ship body;
the movable positioning frame comprises a transversely arranged movable fork head, and the corresponding end of the movable fork head, which is far away from the ship body, is of an open structure so that the steel casing can transversely exit;
the inner circumferential surface of the movable fork head comprises a guide restraining surface which is used for guiding the steel casing to enter a riverbed from top to bottom and is matched with the fixed fork head of the fixed positioning frame on the corresponding construction platform to form restraint in the radial direction of the steel casing, so that the steel casing is restrained and positioned at a preset steel casing installation position.
The beneficial effects are that: according to the invention, the crane hoisting protective cylinder is arranged on the floating crane, the movable fork-shaped head is arranged corresponding to a hoisting point on the crane, the vertical transported protective cylinder is effectively centered by utilizing the vertical matching relationship between the movable fork-shaped head and the crane, and accidents caused by the shaking of the protective cylinder are avoided. And the front end of the movable fork head is opened for being matched with the fixed fork head on the construction platform, so that the movable fork head is matched with the movable fork head of the corresponding floating crane ship to realize the all-dimensional constraint on the radial direction of the steel casing, and the problem of toppling of the steel casing caused by the incomplete constraint is effectively avoided. And the steel protecting cylinder can be conveniently withdrawn from the movable fork-shaped head when the floating crane ship transports the steel protecting cylinder to a construction site and finishes the guiding and placing of the steel protecting cylinder.
As a further optimized scheme, the guide constraint surface comprises side stop side surfaces at two sides, and the side stop side surfaces at the two sides are arranged in a splayed shape.
The beneficial effects are that: the side faces are blocked by the two side faces arranged in a splayed shape, so that the steel pile casing can be conveniently matched with steel pile casings with different radial sizes, and the steel pile casings can be conveniently centered and centered.
As a further preferred solution, the mobile positioning frame comprises a central rod fixed on the hull, and the mobile fork head is fixed at the corresponding end of the central rod.
As a further optimized scheme, the movable positioning frame is fixedly arranged on the ship body in a position adjustable along the front-back direction.
The beneficial effects are that: the movable positioning frame is adjustable in front and back position, so that the position of the righting frame can be adjusted according to actual needs, the universality is improved, and the working stability of the floating crane ship is improved.
Drawings
Fig. 1 is a schematic structural view of a casing to be transported;
fig. 2 is a schematic structural diagram of an embodiment of a pile foundation construction platform provided by the present invention;
FIG. 3 is a schematic structural diagram of the construction platform in FIG. 2 after a steel casing is installed;
FIG. 4 is a schematic view of the fixing and positioning frame of FIG. 2;
FIG. 5 is a schematic structural view of one embodiment of a floating vessel of the present invention that can transport the steel casing shown in FIG. 1;
FIG. 6 is a top view of the mobile spacer of FIG. 5.
Description of reference numerals:
1-hull, 2-crane, 3-hook, 4-mobile positioning frame, 40-mobile fork head, 41-central rod, 42-reinforced diagonal brace, 43-cross arm, 44-inclined arm, 45-side arm, 10-trestle, 11-fixed positioning frame, 110-fixed fork head, 111-lateral stop side, 112-middle stop side, 12-steel pipe pile, 13-floating crane, 100-steel casing, 200-construction platform.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
Referring to fig. 1 to 6, the method for guiding and installing the steel casing of the present invention is mainly used for guiding and installing the steel casing 100 shown in fig. 1 in the process of constructing a pile foundation construction platform, and generally mainly comprises the following steps:
(1) firstly, as shown in fig. 2, respectively providing fixed positioning frames 11 at corresponding positions on the construction platform 200, which are actually positions on the construction platform 200 where the steel casing is designed to be installed, so that the fixed positioning frames 11 are arranged corresponding to the steel casings to be installed, as shown in fig. 4, respectively including fixed fork heads 110, the fixed fork heads 110 horizontally extend transversely, and the corresponding ends of the fixed fork heads 110 are open, so that the steel casings 100 to be installed can horizontally and transversely enter the fixed fork heads 110;
(2) as shown in fig. 3 and 5, a steel casing 100 is hoisted and conveyed by using a floating crane 13, specifically, a crane 2 is arranged on the floating crane 13, the crane 2 hoists the steel casing, in addition, a movable positioning frame 4 is fixed on the floating crane 13, as shown in fig. 6, the movable positioning frame 4 comprises a movable fork head 40 extending out of the hull of the floating crane, the corresponding end part of the movable fork head 40 is an open structure, so that the steel casing horizontally and transversely exits from the movable fork head, and the movable fork head 40 and a lifting hook 3 are vertically corresponding to each other, so that the steel casing is vertically hoisted;
(3) hoisting and conveying the steel casing 100 to the corresponding fixed positioning frame 11 by the floating crane 13, wherein at the moment, as shown in fig. 3, the steel casing 100 in a vertical hoisting posture is transversely conveyed into the fixed fork head by the floating crane 13, the fixed fork head 110 and the movable fork head 40 which are staggered in the vertical direction are vertically matched with each other to form constraint in the radial direction of the steel casing 100, so that the steel casing 100 is constrained and positioned at a preset steel casing installation position, and meanwhile, the fixed fork head 110 and the movable fork head 40 provide guidance for the steel casing 100 to guide the steel casing to descend into a riverbed;
(4) finally, the steel casing 100 is fixed on the construction platform 200 to prepare for subsequent rock entering operation, and after the steel casing is fixed, the floating crane ship 13 can drive the movable positioning frame 4 to retreat, so that the steel casing 100 transversely retreats from the movable fork head 40, and the guide installation of the steel casing on the construction platform is completed.
During concrete pile foundation construction, after the steel casing 100 is guided and installed, when the stop limit frame is fixedly installed on the fixed fork head 110, the stop limit frame is in stop fit with the steel casing 100, and the steel casing is further stopped in the fixed fork head 110, so that the corresponding steel casing is ready to be subjected to rock entering operation.
In fact, after the steel casing is installed in a guiding mode, the steel casing is fixed on the construction platform in a welding and matching mode through a chain, and the chain is used for hooping the steel casing on the fixed positioning frame.
When the rock entering operation is needed, the locking of the steel casing is firstly released, the steel casing is still positioned at the set installation position due to the action of the fixed fork head and the stop limiting frame and cannot topple over, and then the upper opening of the steel casing is vibrated by the vibration hammer to slowly fall. Then, erecting an impact hammer, and continuing small-amplitude impact to enable the steel casing to enter the rock for 2-5 m. The height of the mud surface in the steel casing is about 1m higher than the river surface, the mud can be kept not to fall for a long time, no mud leakage hole is formed in the bottom of the casing, and the rock entering construction is completed. Otherwise, continuing to carry out rock entering operation.
After the rock entering operation is completed, the steel casing and the steel pipe piles forming the construction platform are reliably welded to form an integral structure, so that the stability of the construction platform is improved.
During subsequent pile foundation construction, punch in the steel casing, then lay the steel reinforcement cage to carry out concrete placement construction, accomplish the pile foundation construction, in fact, the pile foundation construction technology in this embodiment is prior art, no longer gives details here.
In fact, in this embodiment, correspond each steel of treating the installation and protect a section of thick bamboo, along upper and lower direction interval arrangement has two fixed position frames on construction platform, forms fixed position frame group to, for guaranteeing the direction stability, the fixed fork shape head of each fixed position frame that belongs to same fixed position frame group aligns from top to bottom and arranges, avoids appearing the whole slope of steel and protecting a section of thick bamboo.
Of course, in other embodiments, for the purpose of achieving axial guiding and radial constraining, the fixed fork head on the fixed positioning frame may have an extension amount with a set length in the up-down direction, so as to form a slot-type structure extending in the up-down direction, at this time, it may also be considered that only one fixed fork head is matched with the movable fork head on the corresponding floating crane to form constraining in the radial direction of the steel casing, so as to constrain and position the steel casing at a preset installation position of the steel casing, and at the same time, the fixed fork head and the movable fork head provide guiding for the steel casing, and finally the steel casing is guided to go down into the riverbed. Of course, in other embodiments, more than three fixed positioning frames may be provided corresponding to the same steel casing according to the actual height requirement, and these fixed positioning frames may be distributed in sequence along the up-down direction.
In this embodiment, as shown in fig. 2, the construction platform 200 may be fixedly erected by using a trestle 10 and a steel pipe pile 12, and a panel may be correspondingly laid on the top.
In the guiding installation method provided by the embodiment, the corresponding end of the fixed fork head is open, the corresponding end of the movable fork head is also open, when the floating crane ship horizontally and transversely sends the steel casing in the vertical hoisting posture into the fixed fork head, the fixed fork head arranged on the construction platform and the movable fork head arranged on the floating crane ship are utilized to mutually cooperate to right the steel casing, so that the radial constraint is provided on the steel casing, and the guiding is provided in the axial direction, namely the up-down direction, of the steel casing. Corresponding to the radial direction of the steel casing, the fixed fork head provides partial restraint, the movable fork head provides partial restraint, the fixed fork head and the movable fork head are matched with each other, the radial omnibearing restraint of the steel casing is realized, and the problem that the steel casing is toppled due to the fact that the restraint is not in place is effectively avoided.
And the end part of the fixed fork head is opened, so that the steel protection cylinder can conveniently transversely enter, the steel protection cylinder does not need to be guided and lowered from a high position, the safety performance is improved, the installation difficulty is reduced, the end part of the movable fork head is opened, the steel protection cylinder can conveniently withdraw from the movable fork head, and the assembly efficiency is improved.
In this embodiment, only in the vertical direction, the two fixed positioning frames are both located above the movable positioning frame, and in other embodiments, the height of the movable positioning frame can be increased, so that the movable positioning frame is located between the two fixed positioning frames, and the arrangement on the floating crane ship is convenient.
In order to realize the above guiding installation method of the steel casing, as shown in fig. 2 to 4, the concrete embodiment of the pile foundation construction platform of the present invention is as follows:
when constructing the pile foundation construction platform, need to protect a section of thick bamboo 100 with the steel and install the direction on the construction platform 200 that has built, correspond, for convenient direction installation corresponding steel protects a section of thick bamboo 100, the construction platform 200 is last to have set firmly fixed position frame 11, usually adopts the mode that the welding links firmly to fix, because fixed position frame 11 is used for the location to lay a section of thick bamboo 100 is protected to the steel, so, fixed position frame 11 is located the position department of the section of thick bamboo is protected to the predetermined installation steel on construction platform 200.
The fixed locating frame 11 comprises a fixed fork head 110, and the corresponding end of the fixed fork head 110, which is far away from the construction platform 200, is of an open structure, so that the steel casing can horizontally and transversely enter.
Specifically, the fixed locating rack 11 is of a frame structure, and for improving the stability of guiding and constraining, two fixed locating racks 11 corresponding to the same steel casing are arranged at intervals in the vertical direction to form a fixed locating rack group, and the guiding and constraining surfaces of the fixed fork-shaped heads belonging to the same fixed locating rack group are arranged in an aligned manner.
In this embodiment, the inner circumferential surface of the fixing fork 110 includes a guide restriction surface for guiding the steel casing 100 in the up-down direction into the river bed and providing radial restriction to the steel casing 100 in the radial direction of the steel casing, and specifically, the guide restriction surface includes side stop side surfaces 111 on both sides and a middle stop side surface 112 between the side stop side surfaces 111, where the side stop side surfaces 111 and the middle stop side surface 112 are both planar structures, and the side stop side surfaces 111 are arranged in parallel and perpendicular to the middle stop side surface 112.
The above-mentioned guiding and restraining surfaces allow the fixed fork head 110 to cooperate with the moving fork head 40 of the corresponding mobile positioning frame 4 on the floating crane to form a radial restraint on the steel casing 100, thereby restraining and positioning the steel casing at a preset steel casing installation position.
When the construction platform provided by the embodiment is used, the construction platform needs to be matched with a floating crane ship for use, and specific ways for guiding and installing the steel casing can be referred to in the embodiment of the steel casing guiding and installing method, and are not described herein again.
In order to realize axial guiding and radial constraint, in the embodiment, two fixed positioning frames 11 which are arranged at intervals up and down are adopted to realize positioning corresponding to each steel casing, so that the constraint stability is improved. In other embodiments, the fixed fork head of the fixed positioning frame may have an extension of a set length in the up-down direction, so as to form a groove-shaped structure extending in the up-down direction, and at this time, it is also considered that only one fixed fork head is matched with the movable fork head on the corresponding floating crane to form a constraint in the radial direction of the steel casing, so as to constrain and position the steel casing at a preset installation position of the steel casing, and at the same time, the fixed fork head and the movable fork head provide guidance for the steel casing, so as to finally guide the steel casing to go down into the riverbed. Of course, in other embodiments, more than three fixed positioning frames may be provided corresponding to the same steel casing according to the actual height requirement, and these fixed positioning frames may be distributed in sequence along the up-down direction.
In this embodiment, the construction platform may be fixed and erected by using a trestle 10, a steel pipe pile 12, and a cross beam, and a panel is correspondingly laid on the top.
To realize the above-mentioned guiding installation method of the steel casing, as shown in fig. 5 and 6, the embodiment of the floating crane ship of the present invention is as follows: the floating crane ship comprises a ship body 1, wherein a crane 2 is installed on the ship body 1, the crane 2 can be used for hoisting a steel casing 100, the structure of the steel casing is shown in figure 1, and the ship body 1 transports the steel casing 100 to a construction site.
The crane 2 comprises a cradle and a hook 3 suspended from the cradle by a wire rope system, the hook 3 forming, in use, a lifting point of the crane.
For long-distance transport, can be in the casing
1/
3And
2/
3the punishment is welded the lug respectively, connects the lifting rope on two lugs, and lifting hook lifting rope intermediate position lifts by crane the operation, protects a section of thick bamboo level and violently, and the river is crossed in the flat hanging, makes things convenient for long distance transportation. And when the steel pile casing is installed in the required on-site guiding manner, the lifting lug is required to be arranged at the top end of the steel pile casing, the steel pile casing is lifted, the steel pile casing is erected, and the steel pile casing is convenient to carry out subsequent laying and rock entering construction.
Because the steel protects a section of thick bamboo longer, with the vertical back of hoisting of steel protecting a section of thick bamboo, the lifting hook only can form single hoisting point, protects a section of thick bamboo in-process of sticking up at the steel, receives the influence of gravity, and the steel protects a section of thick bamboo and appears rocking in the side direction easily, slightly rocks and can influence the normal construction of a steel protecting a section of thick bamboo, rocks still can cause the accident when serious. In order to avoid the situation, a movable positioning frame 4 is fixedly arranged at the front end of the ship body corresponding to the lifting point of the crane, the rear end of the movable positioning frame 4 is fixedly arranged at the ship head, the movable positioning frame 4 comprises a movable fork head 40 which extends forwards to the outer side of the ship body, the front end of the movable fork head 40 is open, when the steel casing 100 is lifted vertically by the crane 2, the steel casing 100 can be introduced from the front, the movable fork head 40 supports the steel casing 100 to form a lower positioning, and then the lower positioning is matched with an upper positioning formed by the lifting point of the crane to centralize the corresponding steel casing.
The movable positioning frame 4 specifically comprises a movable fork head 40 at the front end and a central rod 41 at the rear end, the rear end of the central rod 41 is fixed at the position of the bow at the front end, and the front end of the central rod 41 extends to the outer side of the hull, so that the movable fork head extends to the outer side of the hull.
In the present embodiment, the moving fork head 40 is arranged in a horizontal transverse direction, and the corresponding end of the moving fork head 40 facing away from the hull 1 is of an open structure for horizontal transverse withdrawal of the steel casing. In practice, the inner peripheral surface of the moving fork 40 includes a guide restraining surface for guiding the steel casing in the up-down direction down into the river bed, and cooperates with the fixed fork 110 corresponding to the fixed positioning frame on the construction platform to form a restraint in the radial direction of the steel casing 100, thereby restraining and positioning the steel casing 100 at a preset steel casing installation position.
In this embodiment, the central rod 41 is specifically a pipe, so that the weight reduction design can be satisfied under the condition of satisfying the supporting strength.
Specifically, the movable fork head 40 includes two side arms 43, two side arms 45 and two inclined arms 44, the two side arms 43 arranged horizontally are arranged at the front end of the central rod 41 and are symmetrically arranged about the central rod 41, the two side arms 45 extending forwards are respectively fixed at the end parts of the two side arms 43, the inclined arms 44 are respectively arranged at the inner sides of the two side arms 45, each inclined arm 44 extends inwards from the front to the rear, the front end of each inclined arm 44 is fixedly connected with the corresponding side arm, the rear end of each inclined arm 44 is fixedly connected with the corresponding side arm 43, the two side arms 45 and the two inclined arms 44 form the movable fork head 40, and the two inclined arms are further in abutting fit with the outer surface of the steel casing to centralize the casing.
In this embodiment, the two inclined arms 44 are arranged in a splayed shape, the inner side surface of each inclined arm 44 serves as a lateral stop side surface for stop-fitting with the corresponding steel casing 100, and the two middle stop side surfaces are also arranged in a splayed shape. In fact, the guiding and constraining surface includes the two side stop sides, and the two inclined arms are used to achieve the axial guiding and radial constraining of the steel casing 100.
It should be noted that the movable fork head in this embodiment mainly uses two inclined arms to support and right the casing, and the two inclined arms 44 form a splayed support structure, and the splayed support structure here is not only suitable for righting casings with different radial dimensions, but also facilitates centering and righting the casing so as to vertically right the corresponding casing in cooperation with the hoisting point of the crane 2.
The front end of the movable fork head 40 is open, when the crane 2 vertically lifts the steel casing, the steel casing can conveniently enter the movable fork head 40, and after the guiding installation of the steel casing is completed, the steel casing can conveniently exit the movable fork head when the ship body 1 retreats. Because the movable positioning frame provided in the embodiment is mainly used for righting the pile casing, the front end of the movable positioning frame needs to be opened, and the pile casing is troublesome to move in and out if a stopping structure is arranged.
In addition, in order to increase the strength of the movable fork head, reinforcing struts 42 are provided between the center rod 41 and the lateral arms 43, and one end of each reinforcing strut 42 is welded to the lateral arm 43, and the other end is welded to the center rod 41.
In this embodiment, the cross arm 43, the side arm 45, the inclined arm 44 and the reinforcing inclined strut 42 are all U-shaped members supported by channel steel, so that the welding connection is facilitated on the basis of ensuring the structural strength.
It should be noted that, in this embodiment, the movable positioning frame 4 is fixedly installed on the hull 1 along the front-back direction, specifically, a plurality of installation bases sequentially arranged at intervals along the front-back direction may be fixedly installed on the bow of the ship, a plurality of installation lugs are correspondingly fixedly installed on the movable positioning frame 4, bolt installation holes are correspondingly formed in the installation lugs and the installation bases, when assembling, fastening bolts are installed on the corresponding installation lugs and the installation bases in a penetrating manner, the movable positioning frame and the hull are fixedly assembled together, and the corresponding positions of the installation lugs and the installation bases are adjusted by moving the movable positioning frame back and forth, so as to adjust the front-back position, thereby adapting to different hoisting point positions. In practice, the mounting lugs are welded to the respective central bar 41 to achieve a fixed assembly of the mobile spacer to the hull.
In order to avoid accidents, the transverse pressing plate can be adopted to press the central rod on the hull, bolt mounting holes are respectively formed in two ends of the transverse pressing plate, fixing bolts penetrate through the bolt mounting holes to fix the transverse pressing plate on the hull, and then pressing acting force is applied to the central rod, so that safety is improved.
In fact, in other embodiments, the mounting lug may be omitted, and a plurality of transverse pressing plates sequentially arranged at intervals in the front-back direction may be used, so that the number and the arrangement position of the transverse pressing plates may be selected according to design requirements while ensuring safe assembly.
When the pile casing is transported, firstly, the steel pile casing 100 is transversely lifted, when the ship body 1 is transported to a construction site, the steel pile casing 100 is vertically lifted by the crane 5, meanwhile, the steel pile casing is righted by the movable fork head 40, the floating crane 13 approaches to a construction area, and then, referring to the embodiment of the steel pile casing guiding installation method, the movable fork head 40 and the fixed fork head 110 are matched with each other to form restraint on the steel pile casing 100, so that the guiding installation of the steel pile casing is completed.
In fact, after entering water, the steel casing is easily affected by water flow impact, and moves downstream together with the hull 1, and needs to be corrected. During correction, the floating crane ship 13 is started, the steel casing 100 is lifted for a certain distance, then the movable fork head 40 is utilized to upwards push the steel casing 100, the steel casing is ensured to be tightly attached to the fixed fork head of the fixed positioning frame, and then the steel casing is lowered to the river bed again until the requirement of pile foundation construction is met and can be fixed. If not, the correction can be re-corrected. After the installation is completed, the lifting hook is separated from the steel casing, the floating crane ship retreats, and the fork-shaped head is moved to be separated from the steel casing.
In this embodiment, well core rod is the pipe fitting, realizes subtracting heavy design, and in other embodiments, well core rod also can be the pole frame structure, as long as guarantee bearing structure intensity can.
In this embodiment, the two inclined arms on the movable fork head are mainly used for realizing the restraint positioning of the steel casing, in other embodiments, the guide restraint surfaces on the movable fork head also can comprise two side stop side surfaces which are arranged in parallel relatively and a middle stop side surface which is arranged in the middle, and the two side stop side surfaces can be arranged perpendicular to the middle stop side surface.
In the embodiment, only one movable fork head is arranged on the ship body, and in other embodiments, more than two movable fork heads can be arranged at intervals in the vertical direction to improve the support stability of the steel casing.
In this embodiment, the movable positioning frame is fixed on the bow in a position adjustable along the fore-and-aft direction, so that the fore-and-aft position of the movable positioning frame can be adjusted according to actual needs. In other embodiments, the movable positioning frame can be directly fixed on the bow of the ship, and any adjustment can be omitted as long as the actual transportation requirements are met.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present customer care package is described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments without inventive effort, or some technical features thereof can be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A guide installation method of a steel casing is characterized by comprising the following steps:
(1) respectively arranging fixed positioning frames corresponding to the steel casing cylinders to be installed on the construction platform, wherein each fixed positioning frame comprises a fixed fork-shaped head, and the corresponding end of each fixed fork-shaped head is opened for the steel casing cylinder to transversely enter;
(2) hoisting and conveying the steel casing by using a floating crane, wherein the floating crane is provided with a movable positioning frame, the movable positioning frame comprises a movable fork-shaped head, the corresponding end of the movable fork-shaped head is opened to allow the steel casing to transversely withdraw, and the movable fork-shaped head corresponds to a lifting appliance on the floating crane up and down to enable the steel casing to be vertically hoisted;
(3) when the floating crane ship hoists and conveys the steel protecting cylinder to a corresponding fixed positioning frame, the floating crane ship transversely conveys the steel protecting cylinder in a vertical hoisting posture into a fixed fork head, the fixed fork head and a movable fork head which are staggered in the vertical direction are mutually matched to form constraint in the radial direction of the steel protecting cylinder, so that the steel protecting cylinder is constrained and positioned at a preset steel protecting cylinder mounting position, and the fixed fork head and the movable fork head guide the steel protecting cylinder to descend into a riverbed;
(4) and fixing the steel casing on the construction platform, and enabling the floating crane ship to drive the movable positioning frame to retreat so as to enable the steel casing to withdraw from the movable fork head, thus finishing the guiding installation of the steel casing.
2. The guiding and mounting method for the steel casing according to claim 1, wherein at least two fixing positioning frames are arranged at intervals in the vertical direction corresponding to each steel casing to be mounted so as to form a fixing positioning frame group, and fixing fork-shaped heads of the fixing positioning frames belonging to the same fixing positioning frame group are arranged in an up-and-down alignment manner.
3. A pile foundation construction platform comprising:
a construction platform;
its characterized in that, pile foundation construction platform still includes:
the fixed positioning frame is fixedly arranged on the construction platform, corresponds to the position where the steel casing is preset to be installed, and is used for positioning and installing the steel casing;
the fixed positioning frame comprises a fixed fork-shaped head, and the corresponding end of the fixed fork-shaped head, which is far away from the construction platform, is of an open structure so that a steel casing can transversely enter the open structure;
the inner peripheral surface of the fixed fork head comprises a guide restraining surface which is used for guiding the steel protecting cylinder to enter a riverbed in the up-down direction and is matched with the movable fork head of the movable positioning frame on the corresponding floating crane ship to form restraint in the radial direction of the steel protecting cylinder, so that the steel protecting cylinder is restrained and positioned at a preset steel protecting cylinder mounting position.
4. The pile foundation construction platform of claim 3, wherein more than two fixed positioning frames corresponding to the same steel casing are arranged at intervals in the vertical direction to form a fixed positioning frame group, and the guide constraint surfaces of the fixed fork heads belonging to the same fixed positioning frame group are arranged in alignment.
5. A pile foundation construction platform according to claim 3 or 4, wherein the guiding constraining surface comprises lateral stop sides on both sides and an intermediate stop side between the lateral stop sides, the lateral and intermediate stop sides being of planar configuration.
6. The pile foundation construction platform of claim 5, wherein the two side stop sides are arranged in parallel and perpendicular to the middle stop side.
7. A floating vessel comprising:
a hull;
the crane is arranged on the ship body and used for hoisting the steel casing;
its characterized in that, the floating pontoon still includes:
the movable positioning frame is fixedly arranged on the ship body;
the movable positioning frame comprises a transversely arranged movable fork head, and the corresponding end of the movable fork head, which is far away from the ship body, is of an open structure so that the steel casing can transversely exit;
the inner circumferential surface of the movable fork head comprises a guide restraining surface which is used for guiding the steel casing to enter a riverbed from top to bottom and is matched with the fixed fork head of the fixed positioning frame on the corresponding construction platform to form restraint in the radial direction of the steel casing, so that the steel casing is restrained and positioned at a preset steel casing installation position.
8. A vessel according to claim 7, in which the guide and restraint surfaces comprise side stop sides on either side, the side stop sides being in a splayed arrangement.
9. A vessel according to claim 7 or claim 8, in which the mobile spacer comprises a central rod fixed to the hull, the mobile tines being fixed to respective ends of the central rod.
10. A floating vessel according to claim 7 or 8, in which the mobile spacer is fixedly mounted to the hull in a fore-aft position adjustable.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911082940.9A CN110777789A (en) | 2019-11-07 | 2019-11-07 | Steel casing guide installation method, pile foundation construction platform and floating crane ship |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911082940.9A CN110777789A (en) | 2019-11-07 | 2019-11-07 | Steel casing guide installation method, pile foundation construction platform and floating crane ship |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112390157A (en) * | 2020-11-23 | 2021-02-23 | 山西太钢不锈钢股份有限公司 | Device for centering slab of sharpening machine trolley and using method thereof |
| CN112681319A (en) * | 2020-12-16 | 2021-04-20 | 上海建工四建集团有限公司 | # -shaped beam for controlling perpendicularity of inserting and driving steel pipe piles and construction method |
| CN112878331A (en) * | 2021-01-12 | 2021-06-01 | 中铁二局集团有限公司 | Method for installing and positioning underwater steel casing combination under bare rock or shallow covering layer condition |
-
2019
- 2019-11-07 CN CN201911082940.9A patent/CN110777789A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112390157A (en) * | 2020-11-23 | 2021-02-23 | 山西太钢不锈钢股份有限公司 | Device for centering slab of sharpening machine trolley and using method thereof |
| CN112681319A (en) * | 2020-12-16 | 2021-04-20 | 上海建工四建集团有限公司 | # -shaped beam for controlling perpendicularity of inserting and driving steel pipe piles and construction method |
| CN112878331A (en) * | 2021-01-12 | 2021-06-01 | 中铁二局集团有限公司 | Method for installing and positioning underwater steel casing combination under bare rock or shallow covering layer condition |
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Effective date of registration: 20211213 Address after: 450045 No. 62 Huayuan North Road, Zhengzhou City, Henan Province Applicant after: YELLOW RIVER CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Address before: 450000 Building 8, yard 1, Zhenghua Road, Jinshui District, Zhengzhou City, Henan Province Applicant before: Meng Beifang |
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