CN209837010U - Recyclable steel casing for cast-in-situ bored pile construction - Google Patents
Recyclable steel casing for cast-in-situ bored pile construction Download PDFInfo
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- CN209837010U CN209837010U CN201920413053.4U CN201920413053U CN209837010U CN 209837010 U CN209837010 U CN 209837010U CN 201920413053 U CN201920413053 U CN 201920413053U CN 209837010 U CN209837010 U CN 209837010U
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Abstract
The application discloses a recoverable steel casing of bored concrete pile construction. The recoverable steel casing for cast-in-situ bored pile construction comprises a bottom section casing, an inner casing, an outer casing, a radial restraint device and a pre-tightening connection dismantling device. The inner protective cylinder, the outer protective cylinder and the bottom section protective cylinder are coaxially arranged, and the lower end of the inner protective cylinder is fixedly connected with the bottom section protective cylinder. The outer protective barrel is sleeved outside the inner protective barrel, an annular accommodating cavity is formed between the inner wall of the outer protective barrel and the outer wall of the inner protective barrel, and the lower end face of the outer protective barrel abuts against the upper end face of the bottom section protective barrel. The radial restraining device restrains the lower end face of the outer protecting cylinder and the upper end face of the bottom section protecting cylinder in the radial direction. The upper end of the inner protecting cylinder is connected with the outer protecting cylinder through a pre-tightening connection dismounting device to realize pre-tightening and detachable connection. The technical scheme provided by the application is used for solving the problem that most of steel pile casings cannot be recycled to cause waste in the conventional piling construction method.
Description
Technical Field
The application relates to the technical field of building construction, particularly relates to a recoverable steel casing for cast-in-situ bored pile construction.
Background
When the cast-in-situ bored pile is constructed in water and soft foundation areas and adjacent buildings, a temporary steel casing needs to be installed in advance in the conventional piling construction method. Because the temporary steel pile casing does not need to participate in structural stress, most of the temporary steel pile casings can not be recycled and reused in the conventional pile construction method after the construction of the cast-in-situ bored pile is finished, and great waste is caused.
SUMMERY OF THE UTILITY MODEL
The application provides a recoverable steel casing for cast-in-situ bored pile construction, which is used for solving the problem that most of steel casings cannot be recovered to cause waste in the conventional pile construction method at present.
The first aspect provides a recoverable steel casing for cast-in-situ bored pile construction, which comprises a bottom section casing, an inner casing, an outer casing, a radial restraint device and a pre-tightening connection dismantling device. The inner protective cylinder, the outer protective cylinder and the bottom section protective cylinder are coaxially arranged, and the lower end of the inner protective cylinder is fixedly connected with the bottom section protective cylinder. The outer protective barrel is sleeved outside the inner protective barrel, an annular accommodating cavity is formed between the inner wall of the outer protective barrel and the outer wall of the inner protective barrel, and the lower end face of the outer protective barrel abuts against the upper end face of the bottom section protective barrel. The radial restraining device restrains the lower end face of the outer protective cylinder and the upper end face of the bottom section protective cylinder in the radial direction, and the upper end of the inner protective cylinder and the outer protective cylinder are connected in a pre-tightening and detachable mode through the pre-tightening connection and detachment device.
In the above-mentioned scheme, provide a recoverable steel of bored concrete pile construction and protect a section of thick bamboo, this recoverable steel of bored concrete pile construction protects a section of thick bamboo and is used for bored concrete pile construction, accomplishes the back at the construction, can retrieve the part of this recoverable steel of bored concrete pile construction protects a section of thick bamboo to resources are saved and reduce cost. The recyclable steel casing for the cast-in-situ bored pile construction is integrally formed by a bottom section casing, an inner casing, an outer casing, a radial restraint device and a pre-tightening connection dismounting device for transportation and construction, and sinks to the design depth of a drilled hole integrally in the actual cast-in-situ bored pile construction. And (3) drilling the cast-in-place pile into the inner pile casing, removing the connection between the inner pile casing and the outer pile casing through the pre-tightening connection removing device after the concrete age of the cast-in-place pile meets the strength requirement, and easily pulling out the outer pile casing due to the existence of the annular accommodating cavity, so that the outer pile casing can be recycled and reused. Because, in order to guarantee the smooth progress of bored concrete pile construction, the thickness of protecting a section of thick bamboo outward strengthens the rigidity that sinks that reaches the construction, and the thickness of protecting a section of thick bamboo in the interior is thinner than current protecting a section of thick bamboo, so the material of protecting a section of thick bamboo outward that retrieves has accounted for the major part of the recoverable steel of bored concrete pile construction and protecting a section of thick bamboo in the interior and the bottom festival protects a section of thick bamboo total material less than current protecting a section of thick bamboo, so under the recoverable circumstances of protecting a section of thick bamboo outward, the steel that interior protecting a section of thick bamboo and bottom festival protect a section of thick bamboo and consume less than the material of current protecting a section of thick bamboo, so resources are saved and reduce cost.
In a possible implementation, a filler is provided in the annular receiving chamber.
In the above scheme, the annular containing cavity is filled with the filler, so that the strength of the inner casing is improved, and smooth construction of the cast-in-situ bored pile is ensured.
Optionally, in a possible implementation manner, the recyclable steel casing for cast-in-situ bored pile construction further includes a high-pressure pipe, one end of the high-pressure pipe is used for connecting a high-pressure water source, the other end of the high-pressure pipe extends into the annular accommodating cavity, and the high-pressure pipe is fixedly connected to the inner casing or the outer casing.
In the above scheme, the high-pressure pipe is arranged, when the cast-in-situ bored pile is constructed, the outer protective sleeve needs to be pulled out after the concrete of the cast-in-situ bored pile meets the strength requirement, and in order to reduce the friction force between the outer protective sleeve and the inner protective sleeve, the high-pressure pipe is connected with a high-pressure water source to flush out the filler in the annular accommodating cavity, so that the outer protective sleeve can be easily pulled out.
In a possible implementation manner, the pre-tightening connection and detachment device comprises an anchoring piece and a fastening piece, one end of the anchoring piece is fixed on the inner wall of the outer protective cylinder, the fastening piece penetrates through the anchoring piece, and the fastening piece abuts against the inner wall of the inner protective cylinder.
Among the above-mentioned scheme, the pretension is connected and is demolishd the device and be an anchor structure, and it includes the anchor assembly fixed with outer protecting cylinder and is used for the butt in the fastener of protecting the section of thick bamboo, because anchor assembly is with outer protecting cylinder fixed connection, so, when retrieving outer protecting cylinder, can retrieve anchor assembly simultaneously to do benefit to the saving of resource, simultaneously, because anchor assembly is with outer protecting cylinder fixed connection, so when assembling outer protecting cylinder and interior protecting cylinder, can make things convenient for operating personnel to be under construction.
In a possible implementation manner, the radial constraint device includes at least one transverse clamping block set, each transverse clamping block set includes an inner clamping block and an outer clamping block, the inner clamping block and the outer clamping block are respectively fixed on the inner wall and the outer wall of the bottom-joint protective cylinder, and the inner clamping block and the outer clamping block jointly clamp the lower end of the outer protective cylinder.
In the above-mentioned scheme, the wall that protects a section of thick bamboo at the end festival is provided with horizontal fixture block group, common centre gripping through inboard fixture block and outside fixture block, make outer the location that protects a section of thick bamboo can be quick and shelve and lean on the up end that protects a section of thick bamboo in the end festival, and restricted outer protecting section of thick bamboo in the radial direction and protected the motion of a section of thick bamboo for the end festival, thereby make the assembly efficiency who protects a section of thick bamboo outward obtain improving, and make outer protecting section of thick bamboo and end festival protect between the section of thick bamboo that the cooperation relation is more firm, improve the wholeness that the recoverable steel of whole drilling bored concrete pile construction protected a section of thick bamboo, be convenient for the transportation and on not influencing the.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a recoverable steel casing for bored pile construction at a first view angle in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a recoverable steel casing for bored pile construction in an embodiment of the present application at a second viewing angle;
fig. 3 is another schematic structural diagram of a recoverable steel casing for cast-in-situ bored pile construction in an embodiment of the present application;
fig. 4 is a schematic flow chart of a cast-in-situ bored pile construction method according to an embodiment of the present application;
fig. 5 is a schematic flow chart of another cast-in-situ bored pile construction method according to an embodiment of the present application;
fig. 6 is a schematic flow chart of another cast-in-situ bored pile construction method according to the embodiment of the present application.
Icon: 10-constructing a recyclable steel casing for the cast-in-situ bored pile; 10 a-bored pile; 11-bottom section protection cylinder; 12-inner protecting cylinder; 13-outer protective cylinder; 14-a pre-tightening connection removal device; 61-inner side fixture block; 62-outer side fixture block; 70-high pressure pipe; 80-an annular receiving chamber; 90-a filler; 140-an anchor; 141-fasteners.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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 application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The technical solution in the present application will be described below with reference to the accompanying drawings.
The embodiment provides a recoverable steel casing 10 for cast-in-situ bored pile construction, and the recoverable steel casing 10 for cast-in-situ bored pile construction is used for cast-in-situ bored pile construction and is used for solving the problem that most of steel casings cannot be recovered and are wasted in the conventional pile construction method at present, wherein the size model of the steel casing used in the conventional construction is equal to the size model of an outer casing 13 in the recoverable steel casing 10 for cast-in-situ bored pile construction under a possible implementation condition in the technical scheme, and the following example is provided.
Referring to fig. 1, fig. 1 shows a specific structure of a recoverable steel casing 10 for bored concrete pile construction in a first view. Fig. 2 shows a specific structure of the recoverable steel casing 10 for cast-in-situ bored pile construction in the second view angle in the embodiment.
The recyclable steel casing 10 for cast-in-situ bored pile construction comprises a bottom section casing 11, an inner casing 12, an outer casing 13, a radial restraint device and a pre-tightening connection dismounting device 14. The inner protecting cylinder 12 and the bottom section protecting cylinder 11 are coaxially arranged, and the lower end of the inner protecting cylinder 12 is fixedly connected with the bottom section protecting cylinder 11. The outer protective cylinder 13 is sleeved outside the inner protective cylinder 12, and an annular accommodating cavity 80 is formed between the inner wall of the outer protective cylinder 13 and the outer wall of the inner protective cylinder 12. The lower end surface of the outer protective cylinder 13 and the upper end surface of the bottom section protective cylinder 11 are arranged in the same cross section. The lower end surface of the outer casing 13 abuts against the upper end surface of the bottom-section casing 11. The radial restraint device restrains the lower end surface of the outer casing 13 and the upper end surface of the bottom casing 11 in the radial direction, and the outer casing 13 and the bottom casing 11 are vertically (axially) separable from each other. The upper end of the inner protective cylinder 12 is connected with the outer protective cylinder 13 in a detachable mode through a pre-tightening connection dismounting device 14 in a pre-tightening mode.
Wherein, this recoverable steel of bored concrete pile construction protects a section of thick bamboo 10 and is used for bored concrete pile construction, accomplishes the back at the construction, can retrieve this recoverable steel of bored concrete pile construction protects a section of thick bamboo 10 to resources are saved and reduce cost. The recyclable steel casing 10 for cast-in-situ bored pile construction is integrally formed by a bottom section casing 11, an inner casing 12, an outer casing 13, a radial restraint device and a pre-tightening connection dismounting device 14, and is transported and constructed. The construction of the cast-in-situ bored pile 10a is performed inside the inner casing 12 (the cast-in-situ bored pile 10a is shown in fig. 2), after the concrete age of the cast-in-situ bored pile 10a reaches the strength requirement, the connection between the inner casing 12 and the outer casing 13 is released by the pre-tightening connection removing device 14, and the outer casing 13 can be easily pulled out due to the existence of the annular accommodating chamber 80, so that the outer casing 13 can be recycled and reused. Because, in order to guarantee the smooth progress of bored concrete pile construction, the thickness of outer protecting tube 13 strengthens and reaches the sinking rigidity of construction, and the thickness of inner protecting tube 12 is thinner than the current protecting tube, so the material of outer protecting tube 13 that retrieves has taken up the most of the recoverable steel protecting tube 10 whole material of bored concrete pile construction, and the total material of inner protecting tube 12 and bottom section protecting tube 11 is less than the material of the current protecting tube, so under the recoverable condition of outer protecting tube 13, the steel that inner protecting tube 12 and bottom section protecting tube 11 consumed is less than the material of the current protecting tube consumption, so resources are saved and cost is reduced. Meanwhile, the following examples may be implemented as an example: in order to ensure the construction rigidity and strength of a steel casing of a phi 1.4m cast-in-situ bored pile, if a conventional method is directly adopted, the diameter of the conventional steel casing which is generally required to be used is 1.7m, the thickness of the conventional steel casing is 15mm, the conventional steel casing cannot be recycled after the cast-in-situ bored pile is constructed, the thickness of an outer casing 13 of the recyclable steel casing 10 is 15mm (ensuring the construction strength and rigidity), the thickness of an inner casing 12 of the recyclable steel casing is designed to be 4mm, the thickness of a bottom casing 11 of the recyclable steel casing is designed to be 15mm (being 1m higher), and the outer casing 13 with the thickness of 15mm can be recycled after the concrete age of the cast-in-situ bored pile meets the strength requirement. Meanwhile, in other possible implementation and practical construction embodiments, the thick bottom and the diameter of the outer casing 13, the inner casing 12 and the bottom section casing 11 can be designed according to practical construction requirements.
In one possible implementation, a filler 90 is disposed within the annular receiving cavity 80. As shown in fig. 1, the annular accommodating cavity 80 is filled with the filler 90, so that the strength of the inner casing 12 is improved, and the smooth construction of the cast-in-situ bored pile is ensured.
It should be noted that the filler 90 may be sand, foam, plastic, etc., in this embodiment, the annular accommodating cavity 80 is densely filled with sand, and in other embodiments, the filler 90 may be at least one material of sand, foam, plastic, etc.
In one possible embodiment, as shown in fig. 3, fig. 3 shows a specific structure of another cast-in-situ bored pile construction recoverable steel casing 10 in the present embodiment (wherein, for clarity of illustration, the pre-tightening connection removal device 14 is not shown in fig. 3).
The recoverable steel casing 10 for cast-in-situ bored pile construction further comprises a high-pressure pipe 70, one end of the high-pressure pipe 70 is used for connecting a high-pressure water source, the other end of the high-pressure pipe 70 extends into the annular accommodating cavity 80, and the high-pressure pipe 70 is fixedly connected with the inner casing 12 or the outer casing 13.
Wherein, there is high-pressure pipe 70, in the bored concrete pile construction process, after the bored concrete pile concrete age reached the strength requirement, need extract outer protecting tube 13, in order to reduce the frictional force between inner protecting tube 12 and outer protecting tube 13, put through the high-pressure water source through high-pressure pipe 70, wash out filler 90 in the annular accommodation cavity 80 to make outer protecting tube 13 can be extracted easily. Meanwhile, it should be noted that, in the present embodiment, the plurality of high-pressure pipes 70 are provided, the plurality of high-pressure pipes 70 are welded to the inner wall of the outer casing 13 at intervals, and when the outer casing 13 is recovered, the high-pressure pipes 70 are also recovered along with the outer casing 13, thereby effectively solving the manufacturing cost and the construction cost.
Meanwhile, although the annular accommodating chamber 80 is filled with the filler 90, the high-pressure pipe 70 may not be provided without affecting the pulling-out of the outer casing 13 under the condition that the filler 90 is not flushed out.
Further, in a possible implementation, as shown in fig. 1, the pre-tightening connection and removal device 14 includes an anchor 140 and a fastener 141, one end of the anchor 140 is fixed to the inner wall of the outer casing 13, the fastener 141 is inserted into the anchor 140, and the fastener 141 abuts against the inner wall of the inner casing 12.
The pre-tightening connecting and detaching device 14 is an anchoring structure and comprises an anchoring part 140 fixed with the outer protective cylinder 13 and a fastening part 141 used for abutting against the inner protective cylinder 12, and the anchoring part 140 is fixedly connected with the outer protective cylinder 13, so that the anchoring part 140 can be simultaneously recovered when the outer protective cylinder 13 is recovered, thereby being beneficial to saving resources, and meanwhile, the anchoring part 140 is fixedly connected with the outer protective cylinder 13, so that the construction of operators can be facilitated when the outer protective cylinder 13 and the inner protective cylinder 12 are assembled. Specifically, in one possible implementation, the anchoring member 140 is a steel plate welded to the inner wall of the outer casing 13, the steel plate is provided with a threaded hole, the fastening member 141 is a bolt and a nut, one end of the screw is welded to the inner wall of the inner casing 12, and the other end of the screw passes through the threaded hole and then is screwed by the nut, so that the outer casing 13 and the inner casing 12 are axially pre-tightened to form a whole. Wherein, through setting up a plurality of anchor structures, evenly set up around the axis of interior casing 12, can make interior casing 12 more firm with the position relation of outer casing 13.
It should be noted that, in other embodiments, the pre-tightened connection removing device 14 may be other devices capable of pre-tightening and detachably connecting the outer casing 13 and the inner casing 12, for example, at least one hydraulic device is disposed between the inner wall of the outer casing 13 and the top of the inner casing 12 to achieve the pre-tightened and detachable connection.
It should be noted that the anchoring structure may also be other forms of anchoring structures, in other embodiments, the anchoring member 140 may be fixed to the inner casing 12, and the fastening member 141 may also be other structures, such as a chain block.
Further, in a possible implementation manner, as shown in fig. 1, the radial constraint device includes at least one transverse clamping block set, each transverse clamping block set includes an inner clamping block 61 and an outer clamping block 62, the inner clamping block 61 and the outer clamping block 62 are respectively fixed on the inner wall and the outer wall of the bottom-segment casing 11, and the inner clamping block 61 and the outer clamping block 62 jointly clamp the lower end of the outer casing 13.
Wherein, the wall that protects a section of thick bamboo 11 at the end festival is provided with horizontal fixture block group, through the common centre gripping of inboard fixture block 61 and outside fixture block 62, make outer the section of thick bamboo 13 can be quick fix a position and shelve and lean on the up end that protects a section of thick bamboo 11 at the end festival, and restricted outer the section of thick bamboo 13 in the radial direction and protected a motion of section of thick bamboo 11 for the end festival, thereby make the assembly efficiency that protects a section of thick bamboo 13 outward obtain improving, and make outer a section of thick bamboo 13 and end festival protect between the section of thick bamboo 11 more firm in cooperation relation, improve the wholeness of the recoverable steel of whole drilling bored concrete pile construction and protect a section of thick bamboo 10, be convenient for transport and on not influencing the effect of retrieving outer a.
It should be noted that, in the specific structure shown in fig. 1, there are a plurality of transverse clamping blocks, and the plurality of transverse clamping blocks are arranged at intervals around the axis of the bottom-joint casing 11 and are arranged on the wall surface of the bottom-joint casing 11, wherein each transverse clamping block includes an outer clamping block 62 and an inner clamping block 61, each transverse clamping block and the upper end surface of the bottom-joint casing 11 surrounded by the transverse clamping block define a receiving groove together, the lower end of the outer casing 13 is inserted into the receiving groove, the plurality of transverse clamping blocks and the upper end surface of the bottom-joint casing 11 define a plurality of receiving grooves, and the outer casing 13 can be effectively positioned and stably supported on the upper end surface of the bottom-joint casing 11. In other possible embodiments, the recyclable steel casing 10 for bored pile construction may further include only one transverse clamping block set, where the transverse clamping block set may include one outer clamping block 62 and one inner clamping block 61, and the one outer clamping block 62 and the one inner clamping block 61 are staggered on the wall surface of the bottom casing 11, so that the outer wall of the outer casing 13 and the inner wall forming an included angle with the outer wall are clamped between the outer clamping block 62 and the inner clamping block 61.
Further, it should be noted that, in a possible implementation, due to the existence of the transverse clamping block set, in order to further improve the stability of the inner casing 12 and the bottom casing 11, the lower end of the inner casing 12 is welded with the inner clamping block 61 and the inner wall of the bottom casing 11 at the same time.
It should be noted that the radial constraint device may also be an annular groove formed on the upper end surface of the bottom-segment casing 11, and the lower end surface of the outer casing 13 is inserted into the annular groove in the radial direction, so that the outer casing 13 and the bottom-segment casing 11 are constrained in the radial direction.
Further, it should be noted that, in a possible implementation, the lower end of the outer casing 13 and the upper end of the bottom casing 11 increase the wall thickness to enhance the supporting strength of the outer casing 13 and the bottom casing 11.
It should be noted that, by applying the cast-in-situ bored pile construction method, the problem that most of cast-in-situ bored pile construction steel casing cannot be recycled in the conventional pile construction method at present, which causes waste, can be effectively solved.
Referring to fig. 4, the cast-in-situ bored pile construction method includes:
manufacturing the recyclable steel casing 10 for cast-in-situ bored pile construction in the technical scheme;
the recyclable steel casing 10 for the cast-in-situ bored pile construction is vibrated and sunk to the designed depth;
performing punching cast-in-place pile construction on the inner pile casing 12;
after the cast-in-place pile concrete meets the strength requirement, the connection between the outer pile casing 13 and the inner pile casing 12 is released;
the outer casing 13 is pulled out.
It should be noted that, after the outer protecting tube 13 is pulled out, the outer protecting tube 13 can be recycled, the inner protecting tube 12 and the bottom section protecting tube 11 are supplemented through subsequent processing, and another set of recyclable steel protecting tube 10 for cast-in-situ bored pile construction can be manufactured at low cost, so that the construction cost is reduced.
In one possible construction method, the recyclable steel casing 10 for bored pile construction is vibrated and sunk to a designed depth by using a hoisting device and a vibration hammer. And the hoisting equipment and the vibration hammer are adopted to pull out the outer protective barrel 13 for recycling.
Further, in a possible implementation manner, as shown in fig. 5, the cast-in-situ bored pile construction method further includes: before the cast-in-place bored pile construction is performed, the annular receiving chamber 80 is filled with a filler 90.
It should be noted that, in one possible construction method, the filler 90 is sand, and the sand is densely filled in the annular accommodating cavity 80.
Further, in a possible implementation, as shown in fig. 6, the cast-in-situ bored pile construction method further includes: before the outer jacket 13 is pulled out, the filler 90 in the annular accommodating chamber 80 is discharged by high-pressure water.
It should be noted that a high pressure pipe 70 may be disposed between the outer casing 13 and the inner casing 12, and the high pressure pipe 70 is connected to a high pressure water source, so that the high pressure pipe 70 can discharge the filler 90 (e.g., sand) in the annular accommodating chamber 80.
In one possible implementation, the step of manufacturing the cast-in-situ bored pile construction recyclable steel casing 10 includes:
providing an inner protective cylinder 12, an outer protective cylinder 13 and a bottom section protective cylinder 11;
the upper end of the inner protecting cylinder 12 is connected with the outer protecting cylinder 13 through a pre-tightening connection dismounting device 14;
the lower end surface of the outer protective cylinder 13 is abutted against the upper end surface of the bottom section protective cylinder 11; the lower end of the inner protective cylinder 12 is fixedly connected with the bottom section protective cylinder 11.
In one possible implementation, in order to ensure the integrity of the cast-in-situ bored pile construction recyclable steel casing 10, the step of manufacturing the cast-in-situ bored pile construction recyclable steel casing 10 further includes:
an inner clamping block 61 and an outer clamping block 62 are respectively fixed on the inner wall and the outer wall of the bottom-node casing 11, and the lower end of the outer casing 13 is clamped by the inner clamping block 61 and the outer clamping block 62 together.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (5)
1. The utility model provides a section of thick bamboo is protected to recoverable steel of bored concrete pile construction for bored concrete pile construction, its characterized in that, a section of thick bamboo is protected to recoverable steel of bored concrete pile construction includes:
a bottom section protection cylinder;
the lower end of the inner protecting cylinder is fixedly connected with the bottom section protecting cylinder;
the outer protective cylinder is sleeved outside the inner protective cylinder, an annular accommodating cavity is formed between the inner wall of the outer protective cylinder and the outer wall of the inner protective cylinder, and the lower end face of the outer protective cylinder abuts against the upper end face of the bottom section protective cylinder;
the inner protective cylinder, the outer protective cylinder and the bottom section protective cylinder are coaxially arranged;
the radial restraining device restrains the lower end face of the outer casing and the upper end face of the bottom section casing in the radial direction; and
the upper end of the inner protecting cylinder and the outer protecting cylinder are connected through the pre-tightening connection dismounting device to realize pre-tightening and detachable connection.
2. The recyclable steel casing for cast-in-situ bored pile construction according to claim 1, wherein,
and a filler is arranged in the annular accommodating cavity.
3. The recyclable steel casing for cast-in-situ bored pile construction according to claim 2, further comprising:
and one end of the high-pressure pipe is used for connecting a high-pressure water source, the other end of the high-pressure pipe extends into the annular accommodating cavity, and the high-pressure pipe is fixedly connected with the inner protective cylinder or the outer protective cylinder.
4. The recyclable steel casing for cast-in-situ bored pile construction according to claim 1, wherein,
the pre-tightening connecting and detaching device comprises an anchoring piece and a fastening piece, one end of the anchoring piece is fixed on the inner wall of the outer protective cylinder, the fastening piece penetrates through the anchoring piece, and the fastening piece abuts against the inner wall of the inner protective cylinder.
5. The recyclable steel casing for cast-in-situ bored pile construction according to claim 1, wherein,
the radial constraint device comprises at least one transverse clamping block group, each transverse clamping block group comprises an inner clamping block and an outer clamping block, the inner clamping block and the outer clamping block are respectively fixed on the inner wall and the outer wall of the bottom section protection cylinder, and the inner clamping block and the outer clamping block jointly clamp the lower end of the outer protection cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920413053.4U CN209837010U (en) | 2019-03-28 | 2019-03-28 | Recyclable steel casing for cast-in-situ bored pile construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920413053.4U CN209837010U (en) | 2019-03-28 | 2019-03-28 | Recyclable steel casing for cast-in-situ bored pile construction |
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| CN209837010U true CN209837010U (en) | 2019-12-24 |
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| CN201920413053.4U Active CN209837010U (en) | 2019-03-28 | 2019-03-28 | Recyclable steel casing for cast-in-situ bored pile construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811764A (en) * | 2019-03-28 | 2019-05-28 | 广东远大桥梁钢结构租赁有限公司 | Bored pile construction recoverable steel pile casting and construction method |
-
2019
- 2019-03-28 CN CN201920413053.4U patent/CN209837010U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811764A (en) * | 2019-03-28 | 2019-05-28 | 广东远大桥梁钢结构租赁有限公司 | Bored pile construction recoverable steel pile casting and construction method |
| CN109811764B (en) * | 2019-03-28 | 2024-06-04 | 广东远大路桥科技有限公司 | Recyclable steel pile casing for bored pile construction and construction method |
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