CN114278013B - Detachable steel reinforcement cage of steel strand wires owner muscle and supporting construction thereof - Google Patents
Detachable steel reinforcement cage of steel strand wires owner muscle and supporting construction thereof Download PDFInfo
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- CN114278013B CN114278013B CN202111490788.5A CN202111490788A CN114278013B CN 114278013 B CN114278013 B CN 114278013B CN 202111490788 A CN202111490788 A CN 202111490788A CN 114278013 B CN114278013 B CN 114278013B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 153
- 239000010959 steel Substances 0.000 title claims abstract description 153
- 230000002787 reinforcement Effects 0.000 title claims abstract description 119
- 230000008093 supporting effect Effects 0.000 title claims abstract description 48
- 210000003205 muscle Anatomy 0.000 title claims description 3
- 238000010276 construction Methods 0.000 title description 11
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 239000004831 Hot glue Substances 0.000 claims abstract description 9
- 210000000078 claw Anatomy 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 description 8
- 239000004567 concrete Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007620 mathematical function Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a steel reinforcement cage of a detachable steel strand main reinforcement and a supporting structure thereof, wherein the steel reinforcement cage of the detachable steel strand main reinforcement comprises: the steel strand main rib is sleeved with a sleeve or coated with hot melt adhesive, and is provided with a first section extending from the top end of the pile hole to the bottom end of the pile hole, a second section bent at the bottom end of the pile hole and a third section extending from the bottom end of the pile hole to the top end of the pile hole; a support structure for supporting the strand main bar in a direction from a top end of the pile hole to a bottom end of the pile hole; and a preformed cone head member positioned adjacent to the second segment and mounted to each other with the second segment; the prefabricated conical head piece is inserted into the bottom end of the pile hole when the reinforcement cage is lowered into the pile hole; before recovery, the steel strand main bar is supported by a supporting structural member and is inserted into a pile hole together with the prefabricated conical head piece; the main steel strand is withdrawn from the sleeve during recovering or withdrawn from the pile hole after the hot melt adhesive is heated and melted.
Description
Technical Field
Embodiments of the present disclosure relate generally to the field of green energy-saving building construction, and more particularly, to a reinforcement cage of a detachable strand main reinforcement and a supporting structure thereof.
Background
In recent years, along with the continuous development of urban construction and the large-scale development of underground space, pile anchoring technology in a foundation pit is widely applied, and the most common technology in an enclosure structure system is a cast-in-place pile technology, wherein a cast-in-place pile is used as a temporary retaining wall structure of the foundation pit, and the cast-in-place pile is acted and then is rotated after foundation construction is completed. At this time, a large amount of reinforcing steel bars buried in the ground are not recoverable, and the ground is discarded, so that environmental pollution, soil and water pollution, metal loss and the like are caused, and resource waste and economic loss are caused.
For this reason, recyclable steel reinforcement cages are now on the market, but this recyclable steel reinforcement cage technology has the following drawbacks: first, the recyclable reinforcement cage technology generally requires sleeving reinforcement in a sleeve (e.g., PVC pipe) so that the reinforcement is withdrawn from the sleeve by rotating when recycling is required, thereby achieving recycling of the reinforcement. However, the steel bars used in the steel bar cage in the recycling mode are large in number, high in cost and uneconomical, and the problem of resource waste can be caused. And because of the deformation of the reinforcement cage, the reinforcement is difficult to withdraw from the sleeve, and recovery failure is caused. Secondly, in the process of the whole reinforced concrete structure stress in the recyclable reinforced bar cage technology, the reinforcing bars mainly bear the tensile force brought by the bending moment caused by the lateral soil pressure, and the concrete bears the compressive force, so that the tensile performance of the reinforcing bars is poor under the stress mode, and the supporting capacity of the whole supporting structure can be influenced. In addition, since a large number of reinforcing bars are used to provide support in the reinforcement cage, the overall manufacturing cost is high once recycling fails.
Disclosure of Invention
The invention mainly aims to provide a steel reinforcement cage with a detachable steel strand main rib and a supporting structure thereof, so as to solve at least one of the technical problems and other potential technical problems.
In order to achieve the above object, a first aspect of the present invention provides a removable steel strand main reinforcement cage, which is characterized by comprising: a steel strand main bar (1) which is externally sleeved with a sleeve (10) or coated with hot melt adhesive (11), the steel strand main bar (1) having a first section (14) extending from a pile hole top end (12) to a pile hole bottom end (13), a second section (15) bent at the pile hole bottom end (13), and a third section (16) extending from the pile hole bottom end (13) to the pile hole top end (12); -a support structure (2) for supporting the strand main bar (1) in a direction from the pile hole top end (12) to the pile hole bottom end (13); and a preformed conical head (3) located close to said second segment (15) and reciprocally mounted with said second segment (15); the prefabricated conical head piece (3) is inserted into the bottom end (13) of the pile hole when the reinforcement cage is lowered into the pile hole; before recovery, the steel strand main bar (1) is supported by the supporting structural member (2) and is inserted into the pile hole together with the prefabricated conical head piece (3); the steel strand main rib (1) is pulled out of the sleeve (10) during recovery or pulled out of the pile hole after the hot melt adhesive (11) is melted by heating.
According to an embodiment of the invention, the second segment (15) is catenary and is externally sleeved with an end steel conduit (4); the pre-manufactured bit (3) and the end steel conduit (4) are fixed to each other such that the second segment (15) is mounted to the pre-manufactured bit (3).
According to an embodiment of the invention, the support structure (2) comprises an upstanding rib (5) arranged at a plurality of positions from the top end (12) of the pile hole to the bottom end of the pile hole and supporting the main strand (1) from the inner direction.
According to an embodiment of the invention, the support structure (2) further comprises a snap-in element (6) which snaps the main strand (1) onto the stand bar (5).
According to an embodiment of the invention, the fastener (6) comprises a cylindrical part (60) sleeved on the periphery of the steel strand main rib (1) and a clamping part (61) for clamping the stand rib (5).
According to an embodiment of the present invention, the clamping portion (61) includes a clamping piece (62) extending along an outer wall of the cylindrical portion (60), and a clamping hole (63) located on the clamping piece (62); the stand bar (5) is detachably snapped into the clamping hole (63).
According to an embodiment of the invention, the snap-fit elements (6) snap uniformly onto the stand bars (5).
According to an embodiment of the invention, the pre-formed conical head (3) is a conical angle-guide assembly (7) having a plurality of angle-guides welded to the end steel conduit (4) and forming a conical insertion structure.
According to an embodiment of the invention, the support structure (2) comprises an upper end flange (81) and a support skeleton (84) located below the upper end flange (81).
According to an embodiment of the invention, the upper end flange (81) is provided with a first main rib limiting hole (811) along the circumference, which allows the main steel strand (1) to pass through and enables the main steel strand (1) to be supported on the outer circumference of the supporting framework (84).
According to the embodiment of the invention, lifting lugs (812) for lifting the reinforcement cage are arranged on the upper side of the upper end flange (81) at symmetrical positions.
According to an embodiment of the invention, the support structure (2) further comprises upper end fixing means (82) located between the upper end flange (81) and the support frame (84), the upper end fixing means (82) being fixed to each other with the support frame (84) and being detachably connected to the upper end flange (81) for lifting the support frame (84) out of the pile hole upon recycling.
According to the embodiment of the invention, the upper end fixing device (82) is sleeved in the central through hole (810) of the upper end flange (81) and is detachably connected with the upper end flange (81) through bracket pieces (83); the bracket piece (83) is arranged below the upper end flange (81) and is positioned outside the upper end fixing device (82).
According to an embodiment of the invention, the support structure (2) further comprises lower end fixing means (85); the lower end fixing device (85) is arranged at the bottom of the supporting framework (84) and is in contact with the prefabricated conical head piece (3).
According to an embodiment of the invention, the pre-manufactured conical head (3) comprises an upper annular ring (91) in contact with the lower end of the supporting skeleton (84), and a lower conical member (92) located below the upper annular ring (91).
According to an embodiment of the invention, the upper ring member (91) comprises a circumferentially arranged second main rib limiting hole (911) for passing the steel strand main rib (1).
According to an embodiment of the invention, the upper ring member (91) comprises a boss (912) located above it, and the lower end fixing means (85) is sleeved outside the boss (912).
According to an embodiment of the present invention, the lower tapered member (92) includes claw-shaped portions (920) corresponding in number to the main strands (1) of the steel strand, and main strand guide grooves (921) provided at positions inside the claw-shaped portions (920).
According to the embodiment of the invention, after one side of the steel strand main rib (1) passes through the second main rib limiting hole (911), the steel strand main rib is clamped into the main rib guide groove (921), and then the steel strand main rib passes out of the second main rib limiting hole (911) from the other side.
According to the embodiment of the invention, the top and/or bottom positions of the main reinforcement guide groove (921) are also provided with main reinforcement hoops (922) for clamping the main reinforcement (1) of the steel strand.
The second aspect of the invention also provides a supporting structure, which comprises the steel reinforcement cage of the detachable steel strand main reinforcement according to the first aspect of the invention.
According to an embodiment of the invention, the supporting structure comprises supporting piles, or double piles, or continuous walls.
Drawings
For a clearer description of the technical solutions of the present invention, the drawings that are needed in the description of the embodiments will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a reinforcement cage of a detachable steel strand main reinforcement according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a sleeve sleeved outside a main steel strand according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a steel strand main bar coated with hot melt adhesive.
Fig. 4 is a schematic structural diagram of a snap connection between a main steel strand and an erection steel strand according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of an erection bracing according to the embodiment of the invention.
Fig. 6 is a schematic structural diagram of a fastener according to an embodiment of the invention.
Fig. 7 is a schematic structural view of a cone-shaped angle guide assembly according to an embodiment of the present invention.
Fig. 8 is a structural schematic diagram of a shape design of a main bar of a steel strand according to an embodiment of the present invention.
Fig. 9 is a schematic structural view of a cone-shaped angle guide assembly according to an embodiment of the present invention.
FIG. 10 is a schematic view of the structure of the support frame and the prefabricated conical head part according to the preferred embodiment of the present invention.
Fig. 11 is a schematic view of a support skeleton or the like according to a preferred embodiment of the present invention.
Fig. 12 is a schematic view showing the structure of the upper flange, the upper fixing device, and the like according to the preferred embodiment of the present invention.
Fig. 13 is a schematic view showing the structure of an upper flange according to a preferred embodiment of the present invention.
Fig. 14 is a schematic view of the structure of the bracket member according to the preferred embodiment of the present invention.
FIG. 15 is a schematic view of the structure of the lower end fixture and the pre-formed bit according to the preferred embodiment of the present invention.
Fig. 16 is a schematic view showing the structure of a lower end fixing device and the like according to a preferred embodiment of the present invention.
Fig. 17 is a schematic view of the structure of the pre-fabricated cone head member according to the preferred embodiment of the present invention.
Fig. 18 is a schematic structural view of an upper ring member according to a preferred embodiment of the present invention.
Fig. 19 is a schematic view of the structure of the lower cone of the preferred embodiment of the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments, but not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without any inventive effort based on the embodiments of the present invention are included in the scope of protection of the present invention.
The steel strand has stronger stress bearing capacity (particularly tensile performance) than the steel reinforcement, but lower cost, so the inventor of the patent finds that the steel strand can be used for replacing the steel reinforcement as a main reinforcement of a steel reinforcement cage in the field of foundation pit support and as a recovery object of a recoverable support structure. Specifically, if the main reinforcement is a fully prestressed steel strand during manufacturing of the reinforcement cage, the problems of high manufacturing cost (large amount of steel used), low recovery rate (unfavorable for resource saving), high construction difficulty and the like when the steel strand is used as the main reinforcement or the steel strand and the steel reinforcement are mixed to be used as the main reinforcement can be avoided. In addition, in the steel reinforcement cage of the steel strand main reinforcement, the prestress applied by the steel strand can slow down the generation of the inclined seam gap in the concrete engineering, and the shearing bearing capacity of the support pile can be further improved. Meanwhile, as the high-strength steel strand can be effectively used, the prestressed concrete steel strand can be made into an elongated bearing structure with larger span and smaller dead weight than a common reinforcement cage, and can also effectively prevent cracking of concrete or at least limit the width of the crack to a harmless degree, thereby improving the durability and the ductility of the whole supporting structure. Therefore, the steel strand is used as the main reinforcement to manufacture the detachable reinforcement cage (such as the detachable catenary reinforcement cage), and the detachable reinforcement cage is used as a supporting structure in the fields of cast-in-place piles and the like, so that the detachable reinforcement cage has the advantages of bearing capacity and economic cost.
However, unlike conventional rebar cages, the following technical problems exist when a detachable rebar cage is manufactured by using a steel strand as a main reinforcement: the steel strand is a wire-like steel product formed by twisting a plurality of steel wires, and thus has a great difference from the physical properties of the steel bar. The steel strand has small rigidity, but good tensile performance, and almost zero compression performance, and especially after being assembled into a steel reinforcement cage with a length of tens of meters, the steel strand can be imagined to be softer in shape. At this time, if the traditional hoisting mode of the steel reinforcement cage is adopted, dislocation of the main reinforcement, the stirrup, the stand reinforcement, the buckle and the like on the steel reinforcement cage is likely to fall off or even be damaged, and the function of the steel strand type steel reinforcement cage is unnecessarily affected, so that the steel reinforcement cage is very necessary to ensure a certain degree of rigidity in the hoisting and lowering processes, and the steel reinforcement cage is also a technical problem to be solved by the steel reinforcement cage.
In order to solve the above technical problems, the embodiment of the patent provides a reinforcement cage with a detachable steel strand main reinforcement (the reinforcement cage is generally called and does not represent that the reinforcement cage is made of steel bars, and the steel strand is used as the main reinforcement instead of the steel bar as the main reinforcement in the patent), and the technical scheme of the patent can avoid the defects and defects of the prior art by innovating and improving the reinforcement cage of the patent inventor, so that the construction cost can be reduced, the resource waste can be reduced, the energy conservation and the emission reduction can be realized, and the green construction can be realized. The specific design structure and technical scheme of the patent are described in detail as follows.
As shown in fig. 1 to 19, the present invention proposes a removable steel strand main reinforcement cage, which is characterized by comprising: the steel strand main rib 1, the supporting structural member 2 and the prefabricated conical head member 3.
Wherein the outer part of the main steel strand 1 is sleeved with a sleeve 10 (such as a PE pipe or a PVC pipe as shown in figure 2) or coated with a hot melt adhesive 11 (as shown in figure 3). The steel strand main bar 1 has a first section 14 extending from the pile hole top end 12 to the pile hole bottom end 13, a second section 15 bent at the pile hole bottom end 13, and a third section 16 extending from the pile hole bottom end 13 to the pile hole top end 12. For example, a complete main strand 1 may be formed from the first, second and third segments 14, 15 and 16, so that tension may be applied at both ends by tensioning means to provide a stronger stress to the support structure.
Wherein the support structure 2 is used for supporting the steel strand main reinforcement 1 in a direction from the pile hole top end 12 to the pile hole bottom end 13. A pre-formed conical head 3 is located adjacent to said second segment 15 and is mounted to each other with said second segment 15. Here, an exemplary structure of the support structure 2 and the pre-manufactured bit 3 will be described in detail below.
In operation, the prefabricated conical head part 3 is inserted into the bottom end 13 of the pile hole when the reinforcement cage is lowered into the pile hole; wherein, the steel strand main bar 1 is supported by the supporting structural member 2 and inserted into the pile hole together with the prefabricated conical head member 3 before being recovered. The main strand 1 is withdrawn from the sleeve 10 during recovery or from the pile hole after the hot melt adhesive 11 is melted by heating. Here, by recovering the steel strand main rib 1, the manufacturing cost can be saved, and green construction can be realized. And because the steel strand main bar 1 is a complete steel strand, the recovery of the whole structure can be realized by pulling at one end, and the steel strand is very convenient.
It should be understood that the steel strand main reinforcement 1 is adopted in this patent to replace the structure of using the steel reinforcement as the main reinforcement in the conventional steel reinforcement cage. Because the stress bearing capacity is stronger and the cost is lower, the long and thin bearing structure with larger span and smaller dead weight than the common reinforcement cage can be manufactured, and the cracking of concrete can be effectively prevented. At this time, the support structure can be used as a support structure in the fields of cast-in-place piles and the like, and has advantages in bearing capacity and economic cost. Moreover, the support structure 2 is also adopted in this patent for supporting the main strand 1 along the direction from the top end 12 of the pile hole to the bottom end 13 of the pile hole, and the prefabricated conical head member 3 is used for being inserted into the bottom end 13 of the pile hole when the reinforcement cage is lowered into the pile hole, so that the overall structure can ensure a certain degree of rigidity in the lifting and lowering processes.
According to a preferred embodiment of the present invention, as shown in fig. 8, the present patent considers that the shape of the second segment 15 is designed in the shape of a catenary when designing the shape of the complete main strand 1 made up of the first segment 14, the second segment 15, and the third segment 16. Through experiments, the catenary-shaped structural form is the most stable, the arch axis form is the most reasonable, and the supporting effect of the whole supporting structure is better. In particular, the second segment 15 is catenary in shape, the mathematical function should be satisfied
Wherein, dash is a hyperbolic cosine function, a is a constant to be determined, y is a coordinate value of a y axis, and x is a coordinate value of an x axis. To determine the constant a to be determined, and thus the mathematical function as indicated aboveThe specific shape of the catenary can be obtained by taking an initial value x0 of x as one half of the pile diameter L of the reinforcement cage and taking an initial value y0 of y as the height h of the catenary.
According to an embodiment of the invention, the second segment 15 is catenary and is externally sleeved with an end steel conduit 4, as shown in fig. 1 and 7. The pre-manufactured bit 3 and the end steel conduit 4 are fixed to each other (e.g. welded) such that the second segment 15 is mounted to the pre-manufactured bit 3. By way of example, the second segment 15 and the end steel duct 4 are both catenary, the specific shape of which is preferably catenary as represented by the mathematical function above (so that a particular catenary end steel duct 4 can be made for fixing and guiding the second segment 15 of the strand main bar 1). By way of example, the second segment 15 is provided with an end steel duct 4 on the outside, so as to facilitate the welding of the prefabricated conical head piece 3 to the end steel duct 4, so that the second segment 15 is mounted to the prefabricated conical head piece 3, which serves as a fixed mount, so that the overall conical head structure is stable (for example, the end steel ducts 4 of different directions can also be fixed by welding at the intersections).
According to an embodiment of the present invention, as shown in fig. 1, 4 and 5, the support structure 2 includes an erection rib 5 which is provided at a plurality of positions from the top end 12 of the pile hole to the bottom end of the pile hole and supports the strand main rib 1 from the inner direction. For example, the erection ribs 5 are uniformly arranged from the top end 12 of the pile hole to the bottom end of the pile hole, so that the main steel strand ribs 1 are supported, and the flexible deformation in the process of lowering the steel reinforcement cage is reduced.
According to an embodiment of the invention, as shown in fig. 4-6, the support structure 2 further comprises a snap-in element 6, which snaps the main strand 1 onto the stand bar 5. According to an embodiment of the present invention, the fastener 6 includes a cylindrical portion 60 which is fitted around the outer circumference of the main strand 1, and a clamping portion 61 which clamps the stand bar 5. For example, the main strand 1 may be conveniently snapped onto the stand bar 5 by means of a snap-fit.
According to an embodiment of the present invention, as shown in fig. 4 and 6, the clamping portion 61 includes a clamping piece 62 extending along an outer wall of the cylindrical portion 60, and a clamping hole 63 located on the clamping piece 62; the stand bar 5 can be detachably snapped into the clamping hole 63. According to an embodiment of the present invention, the snap 6 is uniformly snapped onto the stand bar 5. For example, by fastening and mounting the plurality of main steel strand bars 1 and the plurality of stand bars 5 to each other, the main steel strand bars 1 can be supported as a whole, thereby reducing the flexible deformation during the lowering of the reinforcement cage.
According to an embodiment of the present invention, as shown in fig. 7 and 9, the pre-formed conical head member 3 is a conical guide angle assembly 7 having a plurality of guide angles welded to the end steel pipe 4 and forming a conical insertion structure (e.g., the guide angles of the end steel pipe 4 may also be welded at the conical tip to increase the overall rigidity and stability thereof). By way of example, the pre-manufactured bit 3 of the present invention may be used for guiding and guiding purposes, for example, in the construction of front or rear insert cages.
With respect to the preferred embodiments of the support structure 2 and the pre-formed cone head 3
As shown in fig. 10-19, which illustrate a preferred embodiment of the support structure 2 and the pre-manufactured bit 3 of the present patent, a detailed description is provided below.
According to an embodiment of the present invention, the supporting structure 2 includes an upper flange 81 and a supporting framework 84 (for example, an aluminum alloy material, for example, a hollow aluminum alloy cylindrical frame structure may be used, as shown in fig. 11) located below the upper flange 81. As an example, the supporting structure 2 is a construction device for assisting lifting and lowering, which not only can be used as an inner framework to give better rigidity and integrity to the steel strand reinforcement cage in the lifting process, so that the structure of the supporting structure is ensured to be complete, but also can be recycled after the effect of assisting lifting is finished. For example, both the upper flange 81 and the support frame 84 may be recycled after the internal concrete has reached a certain strength.
According to an embodiment of the present invention, as shown in fig. 12 and 13, the upper end flange 81 is provided with first main bar limiting holes 811 along the circumference (e.g., uniformly) that allow the main wire bar 1 to pass through and support the main wire bar 1 on the outer circumference of the supporting frame 84 (e.g., to achieve the effect of limiting, preventing deformation of the overall structure, and increasing rigidity). For example, the outer circumference of the support frame 84 may be further provided with a stand bar, and the stand bar supports the strand main bar 1 from inside.
According to an embodiment of the present invention, the upper side of the upper end flange 81 is provided with lifting lugs 812 for lifting the reinforcement cage at symmetrical positions. The lifting lugs 812 are designed to facilitate the lifting of the cage when it is lowered, and may be welded to the upper flange 81 or integrally formed, for example.
According to an embodiment of the invention, the support structure 2 further comprises upper fixing means 82 between the upper flange 81 and the support frame 84, the upper fixing means 82 being fixed to each other with the support frame 84 and being detachably connected to the upper flange 81 (for example by means of bracket members 83) for lifting the support frame 84 out of the pile hole upon recycling.
According to the embodiment of the present invention, the upper end fixing device 82 is sleeved in the central through hole 810 of the upper end flange 81, and is detachably connected with the upper end flange 81 through bracket members 83 (as shown in fig. 14, for example, four upper end fixing devices 82 are respectively arranged in four directions and symmetrically and uniformly distributed); the bracket 83 is disposed below the upper flange 81 and outside the upper end fixing device 82.
For example, as shown in fig. 14, the bracket member 83 has an L-shape, an upper sheet member 830 thereof may be welded to the upper end flange 81 to thereby effect fixation, and a lower sheet member 831 may be detachably connected to the upper end fixing device 82 by means of bolts (through screw holes 832) or the like. At this time, before recycling, the upper end flange 81 and the upper end fixing device 82 may be fixedly installed to each other by the bracket 83, thereby facilitating the lowering of the reinforcement cage. When the supporting frame 84 needs to be recovered, the bolts can be unscrewed, so that the bracket piece 83 is separated from the upper end fixing device 82, and the supporting frame 84 can be lifted out through the inner wall lifting lugs 821, thereby realizing the integral recovery of the supporting frame 84.
According to an embodiment of the invention, the support structure 2 further comprises lower end fixing means 85; the lower end fixing means 85 is provided at the bottom of the supporting frame 84 and contacts the pre-prepared cone head part 3 (as shown in fig. 15 and 16). By way of example, the lower end fixing device 85 may be in close contact with the prefabricated conical head part 3 (e.g. abutting each other, but not fixed, for example, by tightening the strand main bar 1 so that the lower end fixing device 85 of the support structure 2 is tightly abutted to the prefabricated conical head part 3, and is structurally stable during the whole lowering process), thereby achieving the purpose of fixing the strand reinforcement cage. It will be appreciated that by the close contact of the support frame 84 with the pre-formed cone head 3, support can be provided for the pre-formed cone head 3 so that, for example, during post-mortising (reverse mortising) the drag created by the lower fork (lowering) of the reinforcement cage in the concrete is reduced, thereby being particularly suitable for use in post-mortising construction processes relative to the structure shown in figure 1.
According to an embodiment of the present invention, as shown in fig. 17 to 19, the pre-tapered head member 3 includes an upper ring member 91 (shown in fig. 18) contacting the lower end of the support frame 84, and a lower tapered member 92 (shown in fig. 19) located below the upper ring member 91. According to an embodiment of the present invention, the upper ring member 91 includes a second main rib limiting hole 911 disposed along the circumference for allowing the main steel strand 1 to pass therethrough. Therefore, the first main bar limit hole 811 and the second main bar limit hole 911 are fitted to each other, and thus, the fixing of the main bar 1 of the steel strand at the upper end and the lower end (the tightening of the main bar 1 of the steel strand at both ends on the ground) can be achieved.
According to an embodiment of the present invention, as shown in fig. 17 and 18, the upper ring member 91 includes a boss 912 disposed thereon, and the lower fixing device 85 is sleeved outside the boss 912. For example, the boss 912 is provided at a position inside the second main rib limiting hole 911. According to an embodiment of the present invention, the lower cone 92 includes claw portions 920 corresponding to the number of the strands 1, and a main strand guide groove 921 provided at a position inside the claw portions 920.
According to an embodiment of the present invention, as shown in fig. 19, after one side of the twisted wire main bar 1 passes through the second main bar limiting hole 911, it is caught in the main bar guiding groove 921, and then passes out of the second main bar limiting hole 911 from the other side. According to the embodiment of the invention, the main reinforcement hoop 922 for clamping the main reinforcement 1 of the steel strand is further arranged at the top and/or bottom of the main reinforcement guide groove 921. For example, the steel strand main rib 1 is sleeved with the end steel guide pipe 4 at a position close to the main rib guide groove 921, and can be bent into a catenary shape to be clamped in the main rib guide groove 921 (the steel strand main rib 1 is stably fixed, and recycling of structures such as the steel strand main rib 1 and the supporting framework 84 is not affected), and the main rib hoop 922 is clamped.
In the installation process, for example, the main steel strand 1 may first pass through the second main steel strand limiting hole 911 on one side of the upper ring member 91, then be clamped into the main steel strand guiding groove 921 of the lower cone member 92, and then pass out of the second main steel strand limiting hole 911 on the other side of the upper ring member 91, where the main steel strand 1 is fixed at both ends (for example, two ends are fixed by using a fixing tool). In this order, all the main steel strand wires 1 are installed in place (at this time, the plurality of main steel strand wires 1 are formed in a hollow cylindrical shape as a whole), then the supporting frame 84 is inserted into the hollow cylindrical main steel strand wires 1, and the stand bars 5 are installed around the supporting frame 84 from one end, thereby supporting the main steel strand wires 1. Finally, the upper end flanges 81 are aligned to the main steel strand tendons 1, and welded and bolted at both ends by bracket members 83, respectively, thereby forming an integral detachable reinforcement cage structure of the main steel strand tendons.
Exemplary embodiments regarding support structures
The embodiment of the invention also provides a supporting structure which comprises the steel reinforcement cage with the detachable steel strand main reinforcement according to the embodiment of the invention. According to an embodiment of the invention, the supporting structure comprises supporting piles, or double piles, or continuous walls.
As an example, a support pile is a pile that mainly bears lateral thrust, typically used for foundation pit support, side slope support, and landslide control, bearing horizontal earth pressure or landslide thrust. As an example, the double-row piles are arranged along the side wall of the foundation pit and are a supporting structure consisting of a rigid frame and a crown beam, wherein the rigid frame is formed by connecting front and rear rows of supporting piles and beams. As an example, a continuous wall is also called an underground continuous wall, which is a continuous concrete wall built underground in foundation engineering and is used as a water interception, seepage prevention, bearing and water retaining structure.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention can also be implemented in other structures, and that the features of the present invention are not limited to the preferred embodiments described above. Any changes or modifications which may be easily contemplated by those skilled in the art are intended to be included within the scope of the present invention.
Claims (13)
1. A steel reinforcement cage of detachable steel strand wires owner muscle, its characterized in that includes:
a steel strand main bar (1) which is externally sleeved with a sleeve (10) or coated with hot melt adhesive (11), the steel strand main bar (1) having a first section (14) extending from a pile hole top end (12) to a pile hole bottom end (13), a second section (15) bent at the pile hole bottom end (13), and a third section (16) extending from the pile hole bottom end (13) to the pile hole top end (12);
-a support structure (2) for supporting the strand main bar (1) in a direction from the pile hole top end (12) to the pile hole bottom end (13); and
-a pre-formed conical head piece (3) located close to said second segment (15) and mounted to each other with said second segment (15); the prefabricated conical head piece (3) is inserted into the bottom end (13) of the pile hole when the reinforcement cage is lowered into the pile hole;
before recovery, the steel strand main bar (1) is supported by the supporting structural member (2) and is inserted into the pile hole together with the prefabricated conical head piece (3); the steel strand main rib (1) is pulled out of the sleeve (10) during recovery or pulled out of the pile hole after the hot melt adhesive (11) is melted by heating;
wherein the second section (15) is a catenary and is sleeved with an end steel conduit (4) at the outer side; -the pre-manufactured bit (3) and the end steel conduit (4) are mutually fixed such that the second segment (15) is mounted to the pre-manufactured bit (3);
wherein the support structure (2) comprises an upper end flange (81) and a support framework (84) positioned below the upper end flange (81);
wherein, support structure (2) still include be located upper end fixing device (82) between upper end flange (81) and braced skeleton (84), upper end fixing device (82) with braced skeleton (84) are fixed each other, and with upper end flange (81) detachable connection, so that when retrieving with braced skeleton (84) hangs out the stake hole.
2. The removable steel strand main reinforcement cage according to claim 1, wherein the upper end flange (81) is provided with a first main reinforcement limit hole (811) along the circumference, which allows the steel strand main reinforcement (1) to pass through and supports the steel strand main reinforcement (1) at the outer circumference of the support frame (84).
3. The steel reinforcement cage of the detachable steel strand main reinforcement according to claim 2, characterized in that the upper side of the upper end flange (81) is provided with lifting lugs (812) for lifting the steel reinforcement cage at symmetrical positions.
4. The steel reinforcement cage of the detachable steel strand main reinforcement according to claim 1, wherein the upper end fixing device (82) is sleeved in a central through hole (810) of the upper end flange (81) and is mutually detachably connected with the upper end flange (81) through bracket pieces (83); the bracket piece (83) is arranged below the upper end flange (81) and is positioned outside the upper end fixing device (82).
5. A removable steel strand main reinforcement cage according to claim 1, wherein the support structure (2) further comprises lower end fixing means (85); the lower end fixing device (85) is arranged at the bottom of the supporting framework (84) and is in contact with the prefabricated conical head piece (3).
6. The removable steel strand main reinforcement cage according to claim 5, wherein the prefabricated conical head member (3) comprises an upper annular ring member (91) contacting the lower end of the supporting frame (84), and a lower conical member (92) located below the upper annular ring member (91).
7. The removable steel strand main reinforcement cage according to claim 6, wherein the upper ring member (91) comprises a second main reinforcement limiting hole (911) arranged circumferentially for passing the steel strand main reinforcement (1).
8. The removable steel strand main reinforcement cage of claim 7, wherein said upper ring member (91) includes a boss (912) located thereabove, and said lower end fixing means (85) is sleeved outside said boss (912).
9. The removable steel strand main reinforcement cage according to claim 8, wherein the lower tapered member (92) includes claw portions (920) corresponding in number to the steel strand main reinforcement (1), and main reinforcement guide grooves (921) provided at positions inside the claw portions (920).
10. The steel reinforcement cage of the detachable main reinforcement of the steel strand according to claim 9, wherein the main reinforcement of the steel strand (1) is clamped into the main reinforcement guide groove (921) after passing through the second main reinforcement limiting hole (911) from one side, and then passes out of the second main reinforcement limiting hole (911) from the other side.
11. The removable steel strand main reinforcement cage according to claim 9 or 10, wherein a main reinforcement hoop (922) for clamping the steel strand main reinforcement (1) is further provided at the top and/or bottom of the main reinforcement guide groove (921).
12. A support structure comprising a reinforcement cage according to any one of claims 1-11, wherein the reinforcement cage comprises a removable strand main reinforcement.
13. The support structure of claim 12, wherein the support structure comprises a support pile, or a double row pile, or a continuous wall.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310517836.8A CN116357017A (en) | 2021-12-08 | 2021-12-08 | Detachable steel reinforcement cage of steel strand wires owner muscle and supporting construction thereof |
| CN202111490788.5A CN114278013B (en) | 2021-12-08 | 2021-12-08 | Detachable steel reinforcement cage of steel strand wires owner muscle and supporting construction thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111490788.5A CN114278013B (en) | 2021-12-08 | 2021-12-08 | Detachable steel reinforcement cage of steel strand wires owner muscle and supporting construction thereof |
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| CN202310517836.8A Division CN116357017A (en) | 2021-12-08 | 2021-12-08 | Detachable steel reinforcement cage of steel strand wires owner muscle and supporting construction thereof |
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| CN114278013A CN114278013A (en) | 2022-04-05 |
| CN114278013B true CN114278013B (en) | 2023-06-02 |
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| CN105019450B (en) * | 2015-06-30 | 2017-01-25 | 国鼎(南通)管桩有限公司 | Production process of large-caliber SC shape steel mixed pile |
| CN205000331U (en) * | 2015-08-24 | 2016-01-27 | 江苏卓典钻掘科技有限公司 | Removable core anti -floating pile anchor supporting body subassembly of total length pressure type |
| JP7039856B2 (en) * | 2017-04-21 | 2022-03-23 | 株式会社大林組 | Construction method of reinforcing bar cage for piles, piles and geothermal heat exchange piping |
| CN108385665A (en) * | 2018-02-06 | 2018-08-10 | 上海建工集团股份有限公司 | Recyclable list beam post-tensioning prestressing without bondn diaphram wall and construction method |
| CN208701693U (en) * | 2018-06-25 | 2019-04-05 | 北京建材地质工程有限公司 | The concrete-steel strand cage of deep basal pit pre-stressing force cantilever support pile |
| CN109778841B (en) * | 2018-12-05 | 2022-03-15 | 上海建工集团股份有限公司 | Recyclable prestressed reinforcement cast-in-place pile for foundation pit enclosure and construction method thereof |
| CN110453681B (en) * | 2019-05-31 | 2023-12-22 | 俞晓东 | Steel strand concrete pile and manufacturing method thereof |
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Effective date of registration: 20231212 Address after: No. 1 Yuehua Street, Gongchen Street, Fangshan District, Beijing, 102400, A8-2102 (cluster registration) Patentee after: Sotek (Beijing) Construction Engineering Co.,Ltd. Address before: Room 601-003, unit 2, floor 6, building 21, yard 1, Desheng North Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing 100176 Patentee before: Sotec (Beijing) geotechnical Technology Co.,Ltd. |