CN112482430A - Replaceable secondary grouting anchor bolt foundation and replacement and installation method - Google Patents
Replaceable secondary grouting anchor bolt foundation and replacement and installation method Download PDFInfo
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- CN112482430A CN112482430A CN202011275513.5A CN202011275513A CN112482430A CN 112482430 A CN112482430 A CN 112482430A CN 202011275513 A CN202011275513 A CN 202011275513A CN 112482430 A CN112482430 A CN 112482430A
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- 238000009434 installation Methods 0.000 title abstract description 16
- 238000000034 method Methods 0.000 title abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims abstract description 10
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 8
- 235000017491 Bambusa tulda Nutrition 0.000 description 8
- 241001330002 Bambuseae Species 0.000 description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 8
- 239000011425 bamboo Substances 0.000 description 8
- 239000011440 grout Substances 0.000 description 6
- 230000006978 adaptation Effects 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
- E04B1/4121—Elements with sockets with internal threads or non-adjustable captive nuts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
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Abstract
The invention discloses a replaceable secondary grouting anchor bolt foundation and a replacement and installation method, wherein the foundation comprises a concrete foundation, a secondary grouting layer and a plurality of groups of replaceable anchor bolt assemblies; the replaceable anchor bolt assembly comprises a steel skeleton, an anchor cylinder, an anchor bolt, a lining, a sealing ring and a nut component; the steel skeleton and the anchor cylinder are fixedly connected and pre-embedded in the concrete foundation, the anchor rod and the anchor cylinder are fixedly connected through threads, and the lining and the sealing ring are arranged between the anchor rod and the anchor cylinder. And the removable secondary grouting layer is poured between the bottom plate of the workpiece to be fixed and the concrete foundation. All parts of the secondary grouting anchor bolt foundation are organically combined together to form a good stressed whole, so that the integrity of the anchor bolt foundation and the replaceability of the anchor bolt are realized; the replacement and installation method has the advantages of simple steps, small construction difficulty, easy operation and implementation and high replacement efficiency.
Description
Technical Field
The invention belongs to the technical field of engineering installation, relates to an anchor bolt structure for a concrete foundation, and particularly relates to a replaceable secondary grouting anchor bolt foundation and a replacement and installation method.
Background
In the installation of engineering equipment, an anchor bolt is a common method for connecting a foundation when a common structural part is installed and fixed. In various structures and equipment which are fixedly connected with a foundation by adopting foundation bolts, for the structures and equipment with higher requirements on settlement, the elevation of the equipment is usually adjusted regularly according to the result of observation of the settlement of the foundation so as to meet the use requirements. When adjusting equipment elevation, need dismantle fixed equipment's nut repeatedly sometimes, because of dismantling or reasons such as corrosion repeatedly to fixed equipment's nut, the condition of local failure or damage can probably appear in rag bolt's screw thread, at this moment need change rag bolt, but rag bolt generally all buries deeply in the basis, changes more difficultly, and the construction degree of difficulty is great.
The invention patent with application publication number CN106368235A discloses a prestressed cylinder type foundation with replaceable anchor bolts, which mainly comprises a concrete column body, an upper anchor plate, a lower anchor plate, anchor bolts, rigid sleeves and the like, wherein the rigid sleeves for isolating concrete are sleeved outside the anchor bolts. The invention patent with application publication number CN106351247A discloses an anchor cage ring type foundation with replaceable anchor bolts, which mainly comprises a foundation bearing platform, an upper anchor plate, a lower anchor plate, anchor bolts, a rigid sleeve and the like, wherein the rigid sleeve used for isolating concrete is sleeved outside the anchor bolts. The invention patent with application publication number CN105155571A discloses a replaceable prestressed anchor bolt device and an installation and replacement construction method thereof, which mainly comprises an upper anchor plate, a lower anchor plate, an anchor bolt, a plastic sleeve and the like, wherein the plastic sleeve for isolating concrete is sleeved outside the anchor bolt. Patent application with publication number CN201747544U discloses a mounting base of a wind driven generator and the wind driven generator, the mounting base of the wind driven generator mainly comprises a concrete body, at least more than two foundation bolts, sleeves and the like, and the sleeves for isolating the foundation bolts from the concrete body are sleeved on the foundation bolts. All above modes all set up the sleeve pipe in order to keep apart rag bolt or crab-bolt and concrete at rag bolt or crab-bolt overcoat, so there is the clearance between rag bolt or crab-bolt and the sleeve pipe, therefore rag bolt or crab-bolt and concrete do not effectively the consolidation be a atress whole, and the steadiness is relatively poor, and is not hard up easily.
Therefore, how can conveniently change the rag bolt that damages or became invalid, can guarantee again that removable crab-bolt and basic concrete form the atress better holisticly integratively, strengthen the wholeness, can also reduce the construction degree of difficulty effectively, become rag bolt's an optimization direction, have important meaning to the engineering installation field.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a replaceable secondary grouting anchor bolt foundation and a replacement and installation method.
In order to achieve the purpose, the invention provides a replaceable secondary grouting anchor bolt foundation which comprises a concrete foundation, a secondary grouting layer and a plurality of groups of replaceable anchor bolt assemblies; the replaceable anchor bolt assembly comprises a steel skeleton, an anchor cylinder, an anchor bolt, a lining, a sealing ring and a nut component;
the anchor cylinder is of a cylindrical structure and comprises an upper cylinder body and a lower cylinder body which are integrally formed, the inner diameter of the upper cylinder body is larger than that of the lower cylinder body, so that a step surface A is formed at the junction of the upper cylinder body and the lower cylinder body, a cavity formed in the inner side wall of the upper cylinder body is of a regular polygon prism structure, and the inner side wall of the lower cylinder body is of a thread structure;
the anchor rod comprises an upper thread section, a middle section and a lower thread section from top to bottom, the diameter of the middle section is larger than that of the upper thread section and that of the lower thread section, so that a step B surface is formed at the junction of the upper thread section and the middle section, a step C surface is formed at the junction of the lower thread section and the middle section, and the middle section is of a regular polygon prism structure;
the bushing is of a regular polygonal column hollow structure, a cavity formed by the inner side wall of the bushing is of a regular polygonal column structure, and the upper end of the outer side wall of the bushing protrudes radially outwards to form an annular flange;
the sealing ring is of an annular structure, the upper end and the lower end of the inner side wall of the sealing ring are respectively inwards protruded in the radial direction to form an upper ring body and a lower ring body, the inner diameter of the upper ring body is smaller than that of the lower ring body, and the lower side surface of the upper ring body and the upper side surface of the lower ring body and the sealing ring body jointly form an annular groove;
the lower end face of the lower anchor cylinder body is fixedly connected with the steel framework, the anchor cylinder and the steel framework are embedded in the concrete foundation, and the upper end face of the anchor cylinder is higher than the upper surface of the concrete foundation; the anchor rod is arranged in the anchor cylinder, the lower spiral section of the anchor rod is in threaded connection with the lower cylinder body of the anchor cylinder, the step surface C of the anchor rod is in contact with the step surface A of the anchor cylinder, and the middle section of the anchor rod is higher than the upper cylinder body of the anchor cylinder; the bush is embedded between the middle section of the anchor rod and the upper cylinder body of the anchor cylinder, and the upper end surface of the bush is flush with the B step surface of the anchor rod; the upper ring body and the lower ring body of the sealing ring are respectively pressed and sleeved on the anchor rod and the lining, and the flange of the lining is clamped in the ring groove of the sealing ring; the bottom plate of the workpiece to be fixed is sleeved at the upper end part of the upper thread section of the anchor rod (4), the secondary grouting layer is poured between the bottom plate of the workpiece to be fixed and the concrete foundation, and the nut assembly is installed on the upper thread section of the anchor rod to fix the workpiece to be fixed.
Above-mentioned removable secondary grout crab-bolt basis, for the installation stability and the leakproofness that increase the sealing washer, preferably be provided with annular groove I on the B step face of stock, the downside setting of the upper ring body of sealing washer and the annular bulge I of I adaptation of annular groove. Further preferred the up end of barrel sets up annular groove II on the anchor section of thick bamboo, and the downside of the sealing washer lower ring body sets up the annular bulge II with II adaptations of annular groove. Through the cooperation of annular groove and annular bulge, make sealing washer stability reinforcing, difficult not hard up also further increases overall structure's leakproofness from this. Obviously, the number of the annular grooves I and the annular protrusions I matched with the annular grooves I is not limited at all, and the number of the annular grooves II and the annular protrusions II matched with the annular grooves II is not limited at all and can be designed according to practical situations.
Above-mentioned removable secondary grout crab-bolt basis, nut component mainly used cooperation stock upper thread section uses in order fixing the work piece of treating fixed, therefore nut component can be the nut component that uses commonly used in this field, if including nut, packing ring etc. nut component's mounting means also adopts conventional mode can. The nut assembly of the present invention preferably includes a flat washer, a spring washer, and a nut. The spring washer has the function of preventing the nut from loosening, and the flat washer is used for increasing the contact area between the spring washer and a workpiece to be fixed, so that the stability is further increased.
Preferably, the replaceable secondary grouting anchor bolt foundation is fixedly connected with a plurality of anchor bars on the outer side wall of the anchor cylinder. The fixed connection mode of the anchor bars and the outer side wall of the anchor cylinder is preferably welding. The outer side wall of the anchor cylinder is welded with the anchor bar structure, so that the tightness of the combination of the anchor cylinder and the installation foundation can be further enhanced, and meanwhile, the anchoring performance of the anchor cylinder in the installation foundation can also be enhanced. The number of the anchor bars is not specially limited, and the anchor bars can be designed according to the length of the anchor cylinder and other practical conditions.
Above-mentioned removable secondary grout crab-bolt basis, the steel skeleton is fixed in the concrete foundation with an anchor section of thick bamboo when using together, and the steel skeleton mainly plays the supporting role, and it cooperates with an anchor section of thick bamboo, guarantees the positioning accuracy of stock promptly, increases the anchor ability of stock in the basis again. On the premise of achieving the above functions, the specific structure of the steel skeleton is not particularly limited. The steel skeleton preferably comprises a support plate and a plurality of support columns, the support columns are fixedly connected with the lower surface of the support plate, and the fixed connection mode can be a threaded connection mode, a welding mode or an integrated fixed connection mode which is commonly used in the field. The lower end face of the lower cylinder body of the anchor cylinder is fixedly connected with the upper surface of the supporting plate, and the fixed connection mode of the anchor cylinder and the supporting plate is preferably welding for the convenience of production, manufacturing and installation.
Above-mentioned removable secondary grout crab-bolt basis, the upper surface that the up end of an anchor section of thick bamboo is higher than the concrete foundation damages concrete foundation major structure when preventing to change the stock, reduces the construction degree of difficulty simultaneously. The upper surface of the concrete foundation is preferably a horizontal plane.
Above-mentioned removable secondary grout crab-bolt basis, stock interlude are positive polygon prism structure, and the bush is positive polygon prism hollow structure (the cavity also is positive polygon prism structure), and the barrel is positive polygon prism structure on the anchor section of thick bamboo, adopts positive polygon prism structure mainly to make the stock possess the function of preventing changeing with the bolt head, further strengthens the stability of crab-bolt sub-assembly. In consideration of convenience of a manufacturing process and manufacturing cost, the regular polygonal prism structure is preferably a regular hexagonal prism structure or a regular octagonal prism structure, and is more preferably a regular octagonal prism structure.
Above-mentioned removable secondary grout crab-bolt basis, the sealing washer is rubber seal. The rubber sealing ring has elasticity, is more convenient to install and is in interference fit with the anchor rod and the lining, so that better sealing performance is achieved.
The invention further provides a replacement construction method of the replaceable secondary grouting anchor bolt foundation, which comprises the following steps:
removing the nut assembly, removing a bottom plate of a workpiece to be fixed, removing a secondary grouting layer, sequentially removing the sealing ring and the bushing, screwing and taking out the damaged anchor rod;
inserting a new anchor rod into the anchor cylinder, screwing the anchor rod to enable the lower thread section of the anchor rod to be in threaded connection with the lower cylinder body of the anchor cylinder, and enabling the step surface C of the anchor rod to be in contact with the step surface A of the anchor cylinder;
the flange of the bush is clamped in the ring groove of the seal ring, the bush drives the seal ring to be embedded into a gap between the upper cylinder body of the anchor cylinder and the middle section of the anchor rod, the upper end surface of the bush is flush with the B step surface of the anchor rod, the upper ring body of the seal ring is sleeved on the anchor rod in a compression mode, and the lower ring body of the seal ring is sleeved on the bush in a compression mode;
and fourthly, sleeving the bottom plate of the workpiece to be fixed on the upper thread section of the anchor rod again, reserving a set distance between the bottom plate and the upper surface of the concrete foundation, pressing the bottom plate tightly through the nut assembly, adjusting the bottom plate, pouring a secondary grouting layer in a gap between the bottom plate and the concrete foundation, and replacing and installing the secondary grouting layer after the secondary grouting layer reaches the specified strength.
According to the replacement construction method of the replaceable secondary grouting anchor bolt foundation, the distance between the bottom plate and the upper surface of the concrete foundation has no special requirement, but for the convenience of replacement and removal, the height of the secondary grouting layer is usually 5 cm-10 cm.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial technical effects:
1. the replaceable secondary grouting anchor bolt foundation comprises a concrete foundation, a secondary grouting layer, a steel skeleton, an anchor cylinder, an anchor rod, a lining, a sealing ring and a nut assembly, wherein the anchor cylinder and the steel skeleton are embedded in the concrete foundation together, so that the positioning accuracy of the anchor rod can be ensured, and the anchoring performance of the anchor rod in the foundation can be ensured; the anchor cylinder and the anchor rod are in threaded connection, so that the replaceability of the anchor rod is realized, and the combination tightness of the anchor cylinder and the anchor rod is enhanced; the bush and the sealing ring are arranged between the anchor rod and the anchor cylinder, so that the sealing performance of the anchor rod in the installation process is ensured; and the stability of the whole structure is further enhanced through a removable secondary grouting layer, so that all parts of the anchor bolt assembly are organically combined together to form a good stressed whole with a concrete foundation, and the integrity and the replaceability of the anchor bolt assembly are realized.
2. According to the replaceable secondary grouting anchor bolt foundation provided by the invention, the anchor bar structure is arranged on the outer side wall of the anchor cylinder, so that the combination tightness of the anchor cylinder and the foundation can be further enhanced, and the anchoring performance of the anchor cylinder in the foundation is enhanced.
3. According to the replaceable secondary grouting anchor bolt foundation provided by the invention, the middle section of the anchor bolt, the inner cavity of the upper cylinder body of the anchor cylinder, the inner cavity of the lining and the side wall all adopt regular polygon prism structures, so that the rotation prevention of the anchor bolt and the lining is realized, and the anchor bolt is convenient to take out of the anchor bolt from the anchor cylinder.
4. The replaceable secondary grouting anchor bolt foundation provided by the invention is reasonable in structural design, can save a large amount of maintenance cost, reduces the cost, improves the economic value of the foundation, and is worthy of popularization.
5. The replacement and installation method of the replaceable secondary grouting anchor bolt foundation provided by the invention has the advantages of simple steps, small construction difficulty, easiness in operation and implementation and high replacement efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other embodiments and drawings can be obtained according to the embodiments shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of a replaceable secondary grouting anchor foundation of the present invention;
FIG. 2 is a schematic structural view of a single set of replaceable anchor assemblies of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
fig. 4 is an enlarged view of fig. 2 at a portion I.
Description of reference numerals: 1. a concrete foundation; 2. a steel skeleton; 3. an anchor cylinder; 4. an anchor rod; 5. a bushing; 6. a seal ring; 7. a base plate; 8. a flat washer; 9. a spring washer; 10. a nut; 11. secondary grouting layer; 12. and (6) anchoring the ribs.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Example 1
In this embodiment, a replaceable secondary grouting anchor bolt foundation is shown in fig. 1-2, and includes a concrete foundation 1, a secondary grouting layer 7, and a plurality of sets of replaceable anchor bolt assemblies; the replaceable anchor bolt assembly comprises a steel skeleton 2, an anchor cylinder 3, an anchor rod 4, a lining 5, a sealing ring 6 and a nut component.
The steel skeleton 2 comprises a supporting plate and a plurality of supporting columns, the supporting columns are fixedly connected with the lower surface of the supporting plate, and the number of the supporting columns can be designed according to actual conditions.
The whole anchor cylinder 3 is of a cylinder structure and comprises an upper cylinder body and a lower cylinder body which are integrally formed. The inner diameter of the upper cylinder body is larger than that of the lower cylinder body, so that a step surface A is formed at the junction of the upper cylinder body and the lower cylinder body. The cavity that the inner wall of the upper cylinder formed is of a regular octagonal prism structure, the cavity that the inner wall of the lower cylinder formed is of a cylindrical structure, and the inner wall of the lower cylinder is provided with a thread structure. A plurality of anchor bars 12 are uniformly welded on the outer side wall of the anchor cylinder 3, and the number of the anchor bars 12 can be designed according to actual conditions. As shown in figure 4, the upper end surface of the cylinder body on the anchor cylinder 3 is also provided with an annular groove II.
The anchor rod 4 comprises an upper thread section, a middle section and a lower thread section which are coaxial from top to bottom. The diameters of the upper thread section and the lower thread section are the same, and the diameter of the middle section is slightly larger than that of the upper thread section and the lower thread section, so that a step surface B is formed at the junction of the upper thread section and the middle section, and a step surface C is formed at the junction of the lower thread section and the middle section. The middle section is in a regular octagonal prism structure. The height of the middle section of the anchor rod 4 is larger than that of the cylinder body on the cylinder. As shown in fig. 4, the B step surface of the anchor rod 4 is also provided with an annular groove i.
As shown in FIG. 3, the bushing 5 is a regular octagonal prism hollow structure as a whole, the cavity formed by the inner side wall of the bushing 5 is also a regular octagonal prism structure, and the upper end of the outer side wall of the bushing 5 is radially convex to form an annular flange. The height of the bush 5 is equal to the height of the middle section of the anchor rod 4.
As shown in fig. 4, the sealing ring 6 is an annular structure, the upper and lower ends of the inner sidewall of the sealing ring 6 are respectively protruded inward in the radial direction to form an upper ring body and a lower ring body, the inner diameter of the upper ring body is smaller than that of the lower ring body, and the lower side surface of the upper ring body and the upper side surface of the lower ring body and the sealing ring 6 body together form a ring groove. The downside of the last ring body of sealing washer 6 is provided with the annular bulge I with I adaptation of annular groove. The downside of the lower ring body of sealing washer 6 is provided with the annular bulge II with II adaptations of annular groove. In this embodiment, the seal ring 6 is a rubber seal ring 6. The inner diameter of the upper ring body is slightly smaller than the diameter of the upper thread section of the anchor rod 4, so that the upper ring body is in interference fit with the anchor rod 4 during assembly. The inner diameter of the lower ring is slightly larger than the diameter of the bushing 5.
The nut assembly comprises a flat washer 8, a spring washer 9 and a nut 10.
The lower end surface of the lower cylinder body of the anchor cylinder 3 is welded on the upper surface of the supporting plate of the steel framework 2. The anchor cylinder 3 and the steel skeleton 2 are pre-embedded in the concrete foundation 1, the upper end surface of the anchor cylinder 3 is higher than the upper surface of the concrete foundation 1, and the upper surface of the concrete foundation 1 is a horizontal plane. The anchor rod 4 is arranged in the anchor cylinder 3, the lower spiral section of the anchor rod 4 is in threaded connection with the lower cylinder body of the anchor cylinder 3, the step surface C of the anchor rod 4 is in contact with the step surface A of the anchor cylinder 3, and the step surface B of the anchor rod 4 is arranged on the upper end surface of the upper cylinder body of the anchor cylinder 3. During bush 5 inlays and locates the space between the barrel on 4 interlude of stock and the anchor section of thick bamboo 3, the inside wall of barrel on 5 lateral walls of bush and the anchor section of thick bamboo 3 contacts, and the lateral wall of 4 interlude of 5 inside wall stocks of bush contacts, and 5 up end of bush flushes with the B step face of stock 4, and the inside wall of barrel contacts on 5 lateral walls of bush and the anchor section of thick bamboo 3. The upper ring body of the seal ring 6 is pressed and sleeved on the anchor rod 4, the lower ring body is pressed and sleeved on the lining 5, and the flange of the lining 5 is clamped in the annular groove of the seal ring 6; annular protrusion I is clamped in annular groove I, and annular protrusion II is clamped in annular groove II. The bottom plate 7 of the workpiece to be fixed is sleeved on the upper end part of the upper thread section of the anchor rod 4, the secondary grouting layer 7 is poured between the bottom plate 7 of the workpiece to be fixed and the concrete foundation 1, and the flat washer 8, the spring washer 9 and the nut 10 are sequentially sleeved on the upper thread section of the anchor rod 4 to fix the workpiece to be fixed.
Example 2
In this embodiment, a replacement construction method for a replaceable secondary grouting anchor bolt foundation includes the following steps:
firstly, sequentially taking down a nut 10, a spring washer 9 and a flat washer 8, moving away a bottom plate 7 of a workpiece to be fixed, removing a secondary grouting layer 11, sequentially taking down a sealing ring 6 and a lining 5, screwing and taking out a damaged anchor rod 4;
inserting a new anchor rod 4 into the anchor barrel 3, screwing the anchor rod 4 to enable the lower thread section of the anchor rod 4 to be in threaded connection with the lower barrel body of the anchor barrel 3 to form a whole, and enabling the step surface C of the anchor rod 4 to be in contact with the step surface A of the anchor barrel 3;
the flange of the bush 5 is clamped in the annular groove of the seal ring 6, the bush 5 is provided with the seal ring 6 to be embedded into a gap between the upper cylinder body of the anchor cylinder and the middle section of the anchor rod, the upper end surface of the bush 5 is flush with the step surface B of the anchor rod 4, the upper ring body of the seal ring 6 is sleeved on the anchor rod 4 in a pressing mode, the lower ring body is sleeved on the bush 5 in a pressing mode, the annular bulge I is clamped in the annular groove I, and the annular bulge II is clamped in the annular groove II;
fourthly, the bottom plate 7 of the workpiece to be fixed is sleeved on the upper thread section of the anchor rod 4 again, a certain distance is reserved between the bottom plate 7 and the upper surface of the concrete foundation 1, the flat washer 8, the spring washer 9 and the nut 10 are sequentially sleeved on the upper thread section of the anchor rod 4 to tightly press the bottom plate 7, the bottom plate 7 is adjusted, the secondary grouting layer 11 is poured in a gap between the bottom plate 7 and the concrete foundation 1, and after the secondary grouting layer 11 reaches the specified strength, replacement and installation are completed.
Claims (10)
1. A replaceable secondary grouting anchor bolt foundation is characterized by comprising a concrete foundation (1), a secondary grouting layer (11) and a plurality of groups of replaceable anchor bolt assemblies; the replaceable anchor bolt assembly comprises a steel skeleton (2), an anchor cylinder (3), an anchor rod (4), a lining (5), a sealing ring (6) and a nut component;
the anchor cylinder (3) is of a cylindrical structure and comprises an upper cylinder body and a lower cylinder body which are integrally formed, the inner diameter of the upper cylinder body is larger than that of the lower cylinder body, so that a step surface A is formed at the junction of the upper cylinder body and the lower cylinder body, a cavity formed in the inner side wall of the upper cylinder body is of a regular polygon prism structure, and the inner side wall of the lower cylinder body is of a thread structure;
the anchor rod (4) comprises an upper thread section, a middle section and a lower thread section from top to bottom, the diameter of the middle section is larger than that of the upper thread section and that of the lower thread section, so that a step B surface is formed at the junction of the upper thread section and the middle section, a step C surface is formed at the junction of the lower thread section and the middle section, and the middle section is of a regular polygon prism structure;
the bushing (5) is of a regular polygonal column hollow structure, a cavity formed by the inner side wall of the bushing (5) is of a regular polygonal column structure, and the upper end of the outer side wall of the bushing (5) protrudes outwards in the radial direction to form an annular flange;
the sealing ring (6) is of an annular structure, the upper end and the lower end of the inner side wall of the sealing ring (6) are respectively inwards protruded in the radial direction to form an upper ring body and a lower ring body, the inner diameter of the upper ring body is smaller than that of the lower ring body, and the lower side surface of the upper ring body and the upper side surface of the lower ring body and the sealing ring (6) body jointly form an annular groove;
the lower end face of the lower cylinder body of the anchor cylinder (3) is fixedly connected with the steel framework (2), the anchor cylinder (3) and the steel framework (2) are pre-embedded in the concrete foundation (1), and the upper end face of the anchor cylinder (3) is higher than the upper surface of the concrete foundation (1); the anchor rod (4) is arranged in the anchor cylinder (3), the lower spiral section of the anchor rod (4) is in threaded connection with the lower cylinder body of the anchor cylinder (3), the C step surface of the anchor rod (4) is in contact with the A step surface of the anchor cylinder (3), and the middle section of the anchor rod (4) is higher than the upper cylinder body of the anchor cylinder (3); the bushing (5) is embedded between the middle section of the anchor rod (4) and the upper barrel body of the anchor barrel (3), and the upper end surface of the bushing (5) is flush with the step surface B of the anchor rod (4); an upper ring body and a lower ring body of the sealing ring (6) are respectively pressed and sleeved on the anchor rod (4) and the lining (5), and a flange of the lining (5) is clamped in a ring groove of the sealing ring (6); the bottom plate (7) of the workpiece to be fixed is sleeved at the upper end part of the upper thread section of the anchor rod (4), the secondary grouting layer (11) is poured between the bottom plate (7) of the workpiece to be fixed and the concrete foundation (1), and the nut component is installed on the upper thread section of the anchor rod (4) to fix the workpiece to be fixed.
2. The replaceable secondary grouting anchor bolt foundation as claimed in claim 1, wherein an annular groove I is formed in the B step surface of the anchor bolt (4), and an annular protrusion I matched with the annular groove I is formed on the lower side surface of the upper ring body of the sealing ring (6).
3. The replaceable secondary grouting anchor bolt foundation as claimed in claim 1, wherein the upper end surface of the upper cylinder body of the anchor cylinder (3) is provided with an annular groove II, and the lower side surface of the lower ring body of the sealing ring (6) is provided with an annular protrusion II adapted to the annular groove II.
4. The replaceable secondary grouting anchor foundation according to claim 1, characterized in that the nut assembly comprises a plain washer (8), a spring washer (9) and a nut (10).
5. The replaceable secondary grouting anchor foundation as claimed in claim 1, wherein a plurality of anchor bars (12) are fixedly connected to the outer side wall of the anchor barrel (3).
6. The replaceable secondary grouting anchor bolt foundation as claimed in claim 1, wherein the steel skeleton (2) comprises a support plate and a plurality of support columns, the support columns are fixedly connected with the lower surface of the support plate, and the lower end surface of the lower cylinder body of the anchor cylinder (3) is fixedly connected with the upper surface of the support plate.
7. The replaceable secondary grouting anchor foundation as claimed in any one of claims 1 to 6, wherein the upper surface of the concrete foundation (1) is a horizontal plane.
8. The replaceable secondary grouting anchor foundation of any one of claims 1 to 6, wherein the regular polygonal prism structure is a regular hexagonal prism structure or a regular octagonal prism structure.
9. The replaceable secondary grouting anchor foundation according to any one of claims 1 to 6, wherein said sealing ring (6) is a rubber sealing ring.
10. A replacement construction method of a replaceable secondary grouting anchor foundation as claimed in any one of claims 1 to 9, comprising the steps of:
removing the nut assembly, removing a bottom plate of a workpiece to be fixed, removing a secondary grouting layer, sequentially removing the sealing ring and the bushing, screwing and taking out the damaged anchor rod;
inserting a new anchor rod into the anchor cylinder, screwing the anchor rod to enable the lower thread section of the anchor rod to be in threaded connection with the lower cylinder body of the anchor cylinder, and enabling the step surface C of the anchor rod to be in contact with the step surface A of the anchor cylinder;
the flange of the bush is clamped in the ring groove of the seal ring, the bush drives the seal ring to be embedded into a gap between the upper cylinder body of the anchor cylinder and the middle section of the anchor rod, the upper end surface of the bush is flush with the B step surface of the anchor rod, the upper ring body of the seal ring is sleeved on the anchor rod in a compression mode, and the lower ring body of the seal ring is sleeved on the bush in a compression mode;
and fourthly, sleeving the bottom plate of the workpiece to be fixed on the upper thread section of the anchor rod again, reserving a set distance between the bottom plate and the upper surface of the concrete foundation, pressing the bottom plate tightly through the nut assembly, adjusting the bottom plate, pouring a secondary grouting layer in a gap between the bottom plate and the concrete foundation, and replacing and installing the secondary grouting layer after the secondary grouting layer reaches the specified strength.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011275513.5A CN112482430B (en) | 2020-11-16 | 2020-11-16 | Replaceable secondary grouting anchor bolt foundation and replacement and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011275513.5A CN112482430B (en) | 2020-11-16 | 2020-11-16 | Replaceable secondary grouting anchor bolt foundation and replacement and installation method |
Publications (2)
| Publication Number | Publication Date |
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| CN112482430A true CN112482430A (en) | 2021-03-12 |
| CN112482430B CN112482430B (en) | 2022-02-01 |
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| CN202011275513.5A Active CN112482430B (en) | 2020-11-16 | 2020-11-16 | Replaceable secondary grouting anchor bolt foundation and replacement and installation method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203755336U (en) * | 2014-03-31 | 2014-08-06 | 北京金风科创风电设备有限公司 | Anchor plate anchor bolt combined part and anchor bolts |
| CN204385905U (en) * | 2015-01-04 | 2015-06-10 | 长沙有色冶金设计研究院有限公司 | For the replaceable bolt embedment device of large equipment base |
| JP2018003304A (en) * | 2016-06-28 | 2018-01-11 | センクシア株式会社 | Anchor reinforcing structure, anchor reinforcing method and anchor reinforcing member |
| CN108385711A (en) * | 2018-04-18 | 2018-08-10 | 上海磐武工业科技有限公司 | A kind of anchor cage ring formula basis and its installation method |
-
2020
- 2020-11-16 CN CN202011275513.5A patent/CN112482430B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203755336U (en) * | 2014-03-31 | 2014-08-06 | 北京金风科创风电设备有限公司 | Anchor plate anchor bolt combined part and anchor bolts |
| CN204385905U (en) * | 2015-01-04 | 2015-06-10 | 长沙有色冶金设计研究院有限公司 | For the replaceable bolt embedment device of large equipment base |
| JP2018003304A (en) * | 2016-06-28 | 2018-01-11 | センクシア株式会社 | Anchor reinforcing structure, anchor reinforcing method and anchor reinforcing member |
| CN108385711A (en) * | 2018-04-18 | 2018-08-10 | 上海磐武工业科技有限公司 | A kind of anchor cage ring formula basis and its installation method |
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|---|---|
| CN112482430B (en) | 2022-02-01 |
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