CN112302043A - Inner support guiding device for lock catch steel pipe pile cofferdam - Google Patents

Inner support guiding device for lock catch steel pipe pile cofferdam Download PDF

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Publication number
CN112302043A
CN112302043A CN202011143777.5A CN202011143777A CN112302043A CN 112302043 A CN112302043 A CN 112302043A CN 202011143777 A CN202011143777 A CN 202011143777A CN 112302043 A CN112302043 A CN 112302043A
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CN
China
Prior art keywords
support
steel pipe
pipe pile
moving
horizontal
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Granted
Application number
CN202011143777.5A
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Chinese (zh)
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CN112302043B (en
Inventor
王渊
王中全
文常娟
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China MCC5 Group Corp Ltd
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China MCC5 Group Corp Ltd
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Priority to CN202011143777.5A priority Critical patent/CN112302043B/en
Publication of CN112302043A publication Critical patent/CN112302043A/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/02Restraining of open water
    • E02D19/04Restraining of open water by coffer-dams, e.g. made of sheet piles
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0026Metals
    • E02D2300/0029Steel; Iron
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00Miscellaneous
    • E02D2600/20Miscellaneous comprising details of connection between elements

Abstract

The invention discloses an internal support guiding device for a lock catch steel pipe pile cofferdam, which comprises a base plate and a moving mechanism, wherein the moving mechanism is rigidly connected onto the base plate; the base plate is connected with the inner support, and the moving mechanism is movably connected with the surrounding purlin through guide rollers. Compared with the prior art, the cofferdam construction method can ensure the structural stability under the condition that the cofferdam bears normal construction load, can also ensure the coordination adaptability of the inner support after the lower body system is mutated, and has the advantages of strong adaptability, high automation level, easiness in operation and the like. If the method is applied to the large-scale lock catch steel pipe pile cofferdam, the construction efficiency can be obviously improved, the safety risk in the inner support adjustment construction is reduced, and the efficient, economical, convenient and quick construction of the bearing platform and the pier column in water is realized.

Description

Inner support guiding device for lock catch steel pipe pile cofferdam
Technical Field
The invention belongs to the technical field of steel cofferdam engineering, and particularly relates to a freely-moving guide device for an inner support of a large-scale lock catch steel pipe pile cofferdam.
Background
The steel cofferdam is a temporary retaining or water retaining building envelope constructed for constructing a permanent structure, comprises a steel sheet pile cofferdam, a steel boxed cofferdam, a steel hanging box cofferdam, a steel pipe pile cofferdam and other various structural forms, and can be used for construction of underwater bearing platforms, tie beams, pier columns and the like.
The lock catch steel pipe pile cofferdam has the advantages of simple and rapid processing and manufacturing, short construction period, stable and reliable structure, high material recycling rate and the like, and has remarkable competitiveness in the underwater foundation construction of bridges spanning large rivers.
Because the steel-pipe pile hasp only is used for realizing the effective interlock of steel-pipe pile and then realize that the steel cofferdam lateral wall seals water, does not form wholly between the steel-pipe pile, can't bear the load jointly, and single hasp pile is the cantilever state, and structural rigidity is little and resists the ability of external load poor. In order to ensure the structure safety, the lock catch steel pipe pile cofferdam has enough rigidity to resist external load. In engineering, the problems of small rigidity and low horizontal bearing capacity of the lock catch steel pipe pile cofferdam are solved by adopting a mode that the lock catch piles are connected into a ring through the enclosing purlins and then the steel pipe inner supports are arranged perpendicular to the enclosing purlins.
The combined system formed by the enclosing purlin and the inner support plays a crucial role in maintaining the overall stability of the steel cofferdam, so that the relative stability of the structure of the steel cofferdam is guaranteed. However, the existence of the inner support also causes certain obstacles for construction, which causes that construction operations such as cutting off of steel casing in the cofferdam, excavation of sand and pebbles, construction of bearing platform formwork, hoisting of large objects in the cofferdam, installation of cranes on the bearing platform, and pier construction cannot be smoothly carried out. In order to save cost and facilitate construction in engineering, a common stress system is formed by the enclosing purlin and the inner support in a welding mode. After the treatment, the bearing capacity of the structure can be ensured, but when the inner support is adjusted, the inner support is only directly cut and then welded. The adjustment mode has high construction difficulty, can cause larger potential safety hazard due to sudden change of the structural characteristics of the cofferdam, and even can cause cofferdam collapse under extreme conditions. Taking the construction of the double-limb thin-wall pier as an example, the inner support can obstruct the binding of pier stud steel bars and the installation of templates, the pier stud steel bars need to be dismantled before the construction of the pier stud, and the structure is extremely likely to handle extremely dangerous situations under the working condition because water cannot be stored in the cofferdam.
Therefore, the enclosing purlin and the inner support are connected into a whole in a welding mode, the inner support is adjusted by a direct cutting method, only short-term economic benefits and progress requirements are paid attention to, important safety factors are omitted, and the method has obvious application limitation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the inner support guide device for the lock catch steel pipe pile cofferdam.
The purpose of the invention is realized by the following technical scheme:
an inner support guiding device for a lock catch steel pipe pile cofferdam comprises a base plate and a moving mechanism, wherein the moving mechanism is rigidly connected above the base plate; the base plate is connected with the inner support, and the moving mechanism is movably connected with the surrounding purlin through guide rollers.
According to a preferred embodiment, the moving mechanism comprises a connecting plate assembly and a guide roller; the guide rollers comprise horizontal rollers and vertical rollers, the horizontal rollers and the vertical rollers are fixed on the base plate through a connecting team, the horizontal rollers are in contact with the surface of the purlin, the vertical displacement of the horizontal rollers is limited by the purlin, and the horizontal movement of the horizontal rollers is supported by the surface of the purlin; the vertical roller is in contact with the side face of the enclosing purlin, the horizontal displacement of the vertical roller is limited by the enclosing purlin, and the horizontal movement of the vertical roller is supported by the side face of the enclosing purlin.
According to a preferred embodiment, the horizontal rollers are connected to a connecting plate II via a pin II, and the connecting plate II is connected to the base plate via horizontal roller tension rods and stiffening plates I.
According to a preferred embodiment, the vertical rollers are connected to a connecting plate i via pins i, and the connecting plate i is connected to the base plate via vertical roller tension rods.
According to a preferred embodiment, the moving mechanism further comprises a temporary locking device, and the moving mechanism is connected with the surrounding purlin through the temporary locking device to complete the position locking of the moving mechanism.
According to a preferred embodiment, the temporary locking device comprises a temporary locking rod and a fastening bolt, when the mobile device needs to be locked in position, the temporary locking rod is stretched, and the temporary locking rod is fastened with an ear plate welded on the side face of the fence through the fastening bolt, so that the mobile mechanism and the inner support are fixed in position.
According to a preferred embodiment, the base plate is bolted to the inner support.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
The invention has the beneficial effects that: compared with the prior art, the cofferdam construction method can ensure the structural stability under the condition that the cofferdam bears normal construction load, can also ensure the coordination adaptability of the inner support after the lower body system is mutated, and has the advantages of strong adaptability, high automation level, easiness in operation and the like. If the method is applied to the large-scale lock catch steel pipe pile cofferdam, the construction efficiency can be obviously improved, the safety risk in the inner support adjustment construction is reduced, and the efficient, economical, convenient and quick construction of the bearing platform and the pier column in water is realized.
Drawings
FIG. 1 is an elevational view of the guide of the present invention;
FIG. 2 is a view of the guide shown in FIG. 1 taken from side A-A;
FIG. 3 is a view of the guide shown in FIG. 1 from side B-B;
the method comprises the following steps of 1-inner support, 2-base plate, 3-vertical roller, 4-horizontal roller, 5-pin shaft I, 6-pin shaft II, 7-connecting plate I, 8-connecting plate II, 9-vertical roller connecting rod, 10-horizontal roller connecting rod, 11-temporary locking rod, 12-stiffening plate I, 13-stiffening plate II, 14-stiffening plate III, 15-fastening nut, 16-stiffening rod, 17-locking pile and 18-locking.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that, in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments.
Thus, the following detailed description of the embodiments of the present invention 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 given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations and positional relationships that are conventionally used in the products of the present invention, and are used merely for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, it should be noted that, in the present invention, if the specific structures, connection relationships, position relationships, power source relationships, and the like are not written in particular, the structures, connection relationships, position relationships, power source relationships, and the like related to the present invention can be known by those skilled in the art without creative work on the basis of the prior art.
Example 1:
referring to fig. 1, 2 and 3, the invention discloses an inner support guiding device for a lock catch steel pipe pile cofferdam. The guiding device comprises a base plate 2 and a moving mechanism, wherein the moving mechanism is rigidly connected on the base plate 2; the base plate 2 is connected with the inner support 1, and the moving mechanism is movably connected with the enclosing purlin through guide rollers.
Preferably, the moving mechanism includes a connection plate assembly and a guide roller. The guide rollers comprise horizontal rollers 4 and vertical rollers 3, the horizontal rollers 4 and the vertical rollers 3 are fixed on the base plate 2 through a connecting team, the horizontal rollers 4 are in contact with the surface of the enclosing purlin, the vertical displacement of the horizontal rollers 4 is limited by the enclosing purlin, and the horizontal movement of the horizontal rollers is supported by the surface of the enclosing purlin; the vertical roller 3 is contacted with the side surface of the enclosing purlin, the horizontal displacement of the vertical roller 3 is limited by the enclosing purlin, and the horizontal movement of the vertical roller 3 is supported by the side surface of the enclosing purlin.
Preferably, the horizontal roller 4 is connected with a connecting plate II through a pin shaft II, and the connecting plate II is connected with the base plate 2 through a pull rod of the horizontal roller 4 and a stiffening plate I.
Preferably, the vertical roller 3 is connected with a connecting plate I through a pin shaft I, and the connecting plate I is connected with the base plate 2 through a pull rod of the vertical roller 3.
Specifically, a pin shaft I penetrates through a reserved hole of the connecting plate I and a reserved hole of a rear connecting rod of the vertical guide wheel, a nut is screwed down, a safety clip is inserted, so that the displacement of the pin shaft I along the direction of the central axis of the inner support is restrained, and the horizontal movement of the upper surface and the lower surface of the enclosing purlin can be stably ensured by the vertical guide wheel. And (3) a pin shaft II penetrates through a reserved hole of the connecting plate II and a rear connecting rod of the horizontal roller, a nut is screwed up, a safety card is inserted, so that the displacement of the pin shaft II along the direction of the central axis of the inner support is restrained, and the horizontal roller can stably horizontally move on the side surface of the purlin. The anti-slip structure temporarily locks the inner support after it is translated into position to prevent it from slipping sideways. When the inner support translation is needed, the temporary locking is firstly released, and then the inner support translation is realized by means of the traction equipment which is installed in advance. And after the inner support is translated in place, the traction equipment is released after temporary locking is completed.
Preferably, the moving mechanism further comprises a temporary locking device, and the moving mechanism is connected with the enclosing purlin through the temporary locking device to complete the position locking of the moving mechanism.
Preferably, the temporary locking device comprises a temporary locking rod 11 and a fastening bolt, when the mobile device needs to be locked in position, the temporary locking rod 11 is stretched, and the fastening with an ear plate welded on the side surface of the fence is completed through the fastening bolt, so that the mobile mechanism and the inner support 1 are fixed in position. The side surface of the enclosing purlin is vertical and is divided into an upper block and a lower block; the adjustable pull rod is fastened with the lug plate through the temporary locking bolt to realize inner support fixation, so that the inner support is adjusted in place and cannot shift, and safety risks are avoided.
Preferably, the base plate 2 is fixed on the inner support 1 through bolts.
The guide device realizes the stable horizontal movement of the inner support through two rows of orthogonal rollers tightly attached to the surrounding purlin, and the rollers are arranged in a transverse mode and a vertical mode. The horizontal roller is tightly attached to the side wall of the enclosing purlin arranged on the inner wall of the cofferdam, and the vertical guide wheel is tightly attached to the top surface of the enclosing purlin. The guide device is in contact with the surrounding purlin through the roller, friction force between the guide device and the surrounding purlin is small, and the horizontal movement of the inner support can be achieved by means of small external force after the fastening device is loosened.
When the inner support needs to be translated, firstly, the fastening nut is loosened, the restraint of the inner support on the side wall and the top surface of the enclosing purlin is removed, and then the translation of the inner support is realized by means of the chain block by utilizing the counter-force device which is installed on the side wall of the cofferdam in advance. When the inner support needs to be restored to the normal position, the inner support is reset by adopting the chain block.
The invention can realize the arbitrary horizontal movement of the inner support of the large-scale lock catch steel pipe pile cofferdam, can effectively eliminate the potential safety hazard caused by the displacement of the inner support in time when the construction such as pebble excavation, reinforcement bar binding, template installation, concrete pouring and the like in the cofferdam is greatly facilitated, has the advantages of strong adaptability, high automation level, easy operation and use, high safety and stability and the like, and is suitable for the construction of the large-scale lock catch steel pipe pile cofferdam.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will. Numerous combinations will be known to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. The inner support guiding device for the lock catch steel pipe pile cofferdam is characterized by comprising a base plate and a moving mechanism, wherein the moving mechanism is rigidly connected onto the base plate;
the base plate is connected with the inner support, and the moving mechanism is movably connected with the surrounding purlin through guide rollers.
2. The support guiding device in a lock-catch steel pipe pile cofferdam as recited in claim 1, characterized in that the moving mechanism comprises a connecting plate component and a guiding roller;
the guide rollers comprise horizontal rollers and vertical rollers, the horizontal rollers and the vertical rollers are fixed on the base plate through a connecting team,
the horizontal roller is in contact with the surface of the enclosing purlin, the enclosing purlin limits the vertical displacement of the horizontal roller, and the surface of the enclosing purlin supports the horizontal displacement of the horizontal roller;
the vertical roller is in contact with the side face of the enclosing purlin, the horizontal displacement of the vertical roller is limited by the enclosing purlin, and the horizontal movement of the vertical roller is supported by the side face of the enclosing purlin.
3. The support guide device in a locking steel pipe pile cofferdam as recited in claim 2, characterized in that the horizontal roller is connected with a connecting plate II through a pin shaft II, and the connecting plate II is connected with a base plate through a horizontal roller pull rod and a stiffening plate I.
4. The support guide device in a lock-catch steel pipe pile cofferdam as recited in claim 2, characterized in that the vertical roller is connected with a connecting plate I through a pin shaft I, and the connecting plate I is connected with a base plate through a vertical roller pull rod.
5. The support guiding device in a lock catch steel pipe pile cofferdam as recited in claim 2, characterized in that the moving mechanism further comprises a temporary locking device, and the moving mechanism is connected with the purlin through the temporary locking device to complete the position locking of the moving mechanism.
6. The support guide device in a locking steel pipe pile cofferdam as recited in claim 5, characterized in that the temporary locking device comprises a temporary locking rod and a fastening bolt,
when the mobile device needs to be locked, the temporary locking rod is stretched and fastened with an ear plate welded on the side face of the fence through a fastening bolt, so that the mobile mechanism and the inner support are fixed in position.
7. The support guide device in a locking steel pipe pile cofferdam of claim 1, wherein the base plate is fixed on the inner support through bolts.
CN202011143777.5A 2020-10-23 2020-10-23 Inner support guiding device for lock catch steel pipe pile cofferdam Active CN112302043B (en)

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CN202011143777.5A CN112302043B (en) 2020-10-23 2020-10-23 Inner support guiding device for lock catch steel pipe pile cofferdam

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Application Number Priority Date Filing Date Title
CN202011143777.5A CN112302043B (en) 2020-10-23 2020-10-23 Inner support guiding device for lock catch steel pipe pile cofferdam

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CN112302043B CN112302043B (en) 2022-03-29

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004052277A (en) * 2002-07-17 2004-02-19 Maeda Corp Construction method for double closing levee
CN102943481A (en) * 2012-12-12 2013-02-27 上海强劲地基工程股份有限公司 Reinforced concrete beam and steel beam combined connecting structure for foundation pit supporting and construction method thereof
CN106193054A (en) * 2016-09-09 2016-12-07 中建三局集团有限公司 A kind of support system for subway foundation pit and construction method thereof
CN210737542U (en) * 2019-06-27 2020-06-12 云南建投第六建设有限公司 Inner support verticality controller of steel lattice column
CN211172029U (en) * 2019-10-22 2020-08-04 中国建筑第八工程局有限公司 Temporary supporting device for steel purlin

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004052277A (en) * 2002-07-17 2004-02-19 Maeda Corp Construction method for double closing levee
CN102943481A (en) * 2012-12-12 2013-02-27 上海强劲地基工程股份有限公司 Reinforced concrete beam and steel beam combined connecting structure for foundation pit supporting and construction method thereof
CN106193054A (en) * 2016-09-09 2016-12-07 中建三局集团有限公司 A kind of support system for subway foundation pit and construction method thereof
CN210737542U (en) * 2019-06-27 2020-06-12 云南建投第六建设有限公司 Inner support verticality controller of steel lattice column
CN211172029U (en) * 2019-10-22 2020-08-04 中国建筑第八工程局有限公司 Temporary supporting device for steel purlin

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