CN111809745A - In-situ replacement type auxiliary embedded part - Google Patents
In-situ replacement type auxiliary embedded part Download PDFInfo
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- CN111809745A CN111809745A CN202010858262.7A CN202010858262A CN111809745A CN 111809745 A CN111809745 A CN 111809745A CN 202010858262 A CN202010858262 A CN 202010858262A CN 111809745 A CN111809745 A CN 111809745A
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- prefabricated hole
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 44
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 description 16
- 238000004873 anchoring Methods 0.000 description 12
- 230000006378 damage Effects 0.000 description 12
- 238000010008 shearing Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 230000002441 reversible effect Effects 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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Classifications
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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
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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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- 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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
Abstract
The invention belongs to the technical field of spare and accessory parts for constructional engineering, and particularly relates to an in-situ replacement type auxiliary embedded part. The method aims to solve the problems that the embedded part cannot be replaced in situ and cannot be accurately calculated to carry out stress analysis in the prior art. The invention provides an in-situ replacement type auxiliary embedded part, which comprises a first part, a second part and a third part; the embedded part can sequentially penetrate through the third part and the second part and is fixed with the first part; the third part is provided with a guide part, under the use state, the indication direction of the guide part points to the extension direction of the short shaft in the two central axes of the first external rectangle, the first external rectangle is the minimum external rectangle of the cross section of the first part perpendicular to the axis direction of the first prefabricated hole, and the intersection point of the two central axes of the first external rectangle is positioned on the axis of the first prefabricated hole. The embedded part pre-embedding device can accurately pre-embed, realizes in-situ replacement of the embedded part, shortens the replacement working time of the embedded part, improves the construction efficiency and reduces the construction cost.
Description
Technical Field
The invention belongs to the field of spare and accessory parts for constructional engineering, and particularly relates to an in-situ replacement type auxiliary embedded part.
Background
In the fields of buildings, electrified railways, urban rail transit and the like, in order to realize the installation and fixation of external engineering equipment foundations, a building pre-embedding technology is generally adopted for solving the problem. The existing embedded technology mainly uses embedded parts, and in the long-term use process of the existing embedded parts, reinforcing steel bars or anchor rods are corroded or damaged, so that the embedded parts cannot be replaced in situ, need to be reinstalled, are inconvenient to install, have high maintenance cost and influence on attractiveness; in the prior art, the embedded part is deep in anchoring depth and easily interferes with the main reinforcement, and constructors often saw off the main reinforcement for embedding the embedded part, so that potential safety hazards of buildings are caused; in addition, concrete pouring is difficult around the embedded part, especially at the dense part of the embedded part, and the bearing capacity of the embedded part is influenced due to the fact that the concrete is not densely vibrated. Meanwhile, the structure of the existing embedded part cannot be subjected to stress analysis accurately, and the bearing capacity of the embedded part in each direction is not designed in a targeted manner.
Disclosure of Invention
The method aims to solve the problems in the prior art, namely the problems that an embedded part in the prior art is large in embedded depth, cannot be replaced in situ and cannot be accurately calculated to carry out stress analysis. The invention provides an in-situ replacement type auxiliary embedded part, which comprises a first part, a second part and a third part which are sequentially connected, wherein:
the first part is an anti-pulling structure which is larger than the second part in expansion, the second part is a tubular structure, and the third part is a pipe orifice sealing ring structure;
the first component, the second component and the third component are coaxially provided with a first prefabricated hole, a second prefabricated hole and a third prefabricated hole respectively; in a use state, the external connecting piece can sequentially penetrate through the third prefabricated hole and the second prefabricated hole and is fixedly connected with the first component through the first prefabricated hole;
the third component is provided with a guide part, and in a use state, the indication direction of the guide part points to the extension direction of the short shaft in the two central axes of the first external rectangle;
the first external rectangle is the minimum external rectangle of the middle section of the first component perpendicular to the axis direction of the first prefabricated hole, and the intersection point of the two central axes of the first external rectangle is located on the axis of the first prefabricated hole.
In some preferred embodiments, the first preformed hole does not extend through the first component.
In some preferred embodiments, the third member includes a bottom wall and a side wall having a first end and a second end, the first end and the second end being opposite, the first end of the side wall being secured to the bottom wall and forming a seal, the second end of the side wall extending away from the bottom wall to form a central guard chamber and a terminal mounting portion,
the inner diameter of the protection cavity is closely matched with the outer diameter of the second component, and one end of the second component, which is far away from the first component, is arranged in the protection cavity; the third preformed hole penetrates through the bottom wall and is communicated with the protection chamber.
In some preferred technical solutions, the bottom wall extends along the direction of the side wall to form a C-shaped connection part, the C-shaped connection part is located outside the protection chamber and opens towards the protection chamber; the upper end part of the C-shaped connecting part is connected with the bottom wall, and a gap is reserved between the lower end part of the C-shaped connecting part and the side wall.
In some preferred technical solutions, a lower end portion of the C-shaped connecting portion extends a set length in a direction away from an outer diameter of the side wall to form a reinforcing portion, and the set length is smaller than a height of the C-shaped connecting portion.
In some preferred technical solutions, the first prefabricated hole is an internally threaded hole, the internal thread of the first prefabricated hole is matched with the external thread of the external connecting piece, and the first component is in threaded connection with the external connecting piece.
In some preferred embodiments, the first member has an ellipsoid-like structure, and the first member has an elliptical cross-section perpendicular to the axis of the first preform hole.
In some preferred technical solutions, the first member is a frustum-chamfered structure, and a middle cross section of the first member perpendicular to the axis of the first preformed hole is a quadrangle, a hexagon or an octagon.
In some preferred embodiments, the third member is made of a flexible stretchable material.
In some preferred embodiments, the first component, the second component and the third component are integrally formed.
The invention has the beneficial effects that:
the in-situ replacement type auxiliary embedded part is suitable for embedded parts with multiple specifications, and can realize in-situ replacement of external connecting pieces such as the embedded parts, improve the construction efficiency and reduce the maintenance cost.
The first part of the in-situ replacement type auxiliary embedded part is expanded relative to the second part to form an anti-pulling structure, and the contact area of the first part and the periphery of the bottom is large, so that the connection strength and the anchoring strength of the in-situ replacement type auxiliary embedded part are improved; meanwhile, the two symmetrical shafts with different lengths can effectively avoid torsion in the installation process, reduce secondary processing and save material cost; meanwhile, the first component is matched with the guide part of the third component, so that a constructor can adjust the installation direction according to the load condition, and the installation is carried out through accurate stress analysis so as to ensure that the bearing capacity of the construction equipment is the maximum. The third component has good sealing and damp-proof effects, and can prevent slurry leakage in the concrete pouring process, so that the second component and the first component are prevented from being blocked by the slurry to influence use. Meanwhile, the third component can form an auxiliary embedded system by matching with auxiliary reinforcing steel bars, and the system can reversely draw concrete under the action of shearing force, so that concrete damage forms such as shearing and prying damage, edge damage and the like are avoided.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic view of an overall structure of an in-situ replacement auxiliary embedded part according to a first embodiment of the invention;
FIG. 2 is a schematic half-section view of FIG. 1;
FIG. 3 is a top view of an in-situ replacement auxiliary embedment in accordance with a first embodiment of the present invention;
FIG. 4 is a schematic diagram of a second integral structure of an in-situ replacement auxiliary embedded part according to a first embodiment of the invention;
FIG. 5 is a first schematic view illustrating an overall structure of an in-situ replacement auxiliary embedded part according to a second embodiment of the present invention;
FIG. 6 is a top view of an in-situ replacement auxiliary embedment in accordance with a second embodiment of the present invention;
FIG. 7 is a schematic view of an ideal projected area of vertebral body destruction according to one embodiment of the present invention.
List of reference numerals:
100-a first component, 110-a first preformed hole; 200-a second component, 210 a second preformed hole; 300-third part, 310-third preformed hole, 320-bottom wall, 330-side wall, 340-C-shaped connecting part, 350-guiding part.
Detailed Description
In order to make the embodiments, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
The invention relates to an in-situ replacement auxiliary embedded part, which comprises a first part, a second part and a third part which are sequentially connected, wherein:
the first part is an anti-pulling structure which is larger than the second part in expansion, the second part is a tubular structure, and the third part is a pipe orifice sealing ring structure;
the first component, the second component and the third component are coaxially provided with a first prefabricated hole, a second prefabricated hole and a third prefabricated hole respectively; in a use state, the external connecting piece can sequentially penetrate through the third prefabricated hole and the second prefabricated hole and is fixedly connected with the first component through the first prefabricated hole;
the third component is provided with a guide part, and in a use state, the indication direction of the guide part points to the extension direction of the short shaft in the two central axes of the first external rectangle;
the first external rectangle is the minimum external rectangle of the middle section of the first component perpendicular to the axis direction of the first prefabricated hole, and the intersection point of the two central axes of the first external rectangle is located on the axis of the first prefabricated hole.
It can be understood that the in-situ replacement auxiliary embedded part of the invention can be suitable for external connecting parts with various dimensions, the external connecting parts comprise embedded parts and anchoring parts, such as anchor bolts, anchor rods and the like, which can be anchored and fixed by using the invention. Meanwhile, the indication direction of the guide part can also be the extension direction of the long axis in the two central axes of the minimum circumscribed rectangle of the middle section of the first component perpendicular to the axial direction of the first prefabricated hole or the extension direction of other angles. It is understood that the guide portion is within the scope of the present invention as long as the guide portion can directly or indirectly indicate the installation direction of the present invention.
In order to more clearly explain the in-situ replacement auxiliary embedded part of the invention, a preferred embodiment of the invention is described in detail below with reference to the attached drawings.
As a preferred embodiment of the present invention, the in-situ replacement auxiliary embedded part of the present invention is shown in fig. 1, and includes a first component 100, a second component 200 and a third component 300, which are connected in sequence, wherein the first component 100 is an anti-pulling structure that is expanded compared with the second component 200, the second component 200 is a tubular structure, and the third component 300 is a pipe orifice sealing ring structure. In some preferred embodiments, the connection method of the first part 100, the second part 200 and the third part 300 can be fixed connection or detachable connection, preferably, the first part 100 and the second part 200 are fixedly bonded by using a chemical agent or are connected by screw threads; the second part 200 and the third part 300 are detachably connected by a socket, and those skilled in the art can flexibly set the connection modes of the first part 100, the second part 200, and the third part 300 according to practical situations, which are not described herein again.
Further, the first, second and third components 100, 200 and 300 are coaxially provided with a first prefabricated hole 110, a second prefabricated hole 210 and a third prefabricated hole 310, respectively; in the use state, the external connection member may sequentially penetrate through the third preformed hole 310 and the second preformed hole 210, and is fixedly connected to the first component 100 through the first preformed hole 110. Specifically, in some preferred embodiments, the second prefabricated hole 210 and the third prefabricated hole 310 are through holes, the first prefabricated hole 110 is an internally threaded hole, the internal thread of the first prefabricated hole 110 is matched with the external thread of the external connecting member, and the first component 100 is fixedly connected with the external connecting member through threads. The depth of the second pre-hole 210 and the depth of the third pre-hole 310 of the present invention are not particularly limited; preferably, the depth of the second pre-hole 210 is greater than the depth of the third pre-hole 310. It is understood that the specifications, such as the hole diameter and the depth, of the first preformed hole 110, the second preformed hole 210 and the third preformed hole 310 are set according to the size of the external connection component, and will not be described herein.
In the using state of the present invention, the external connecting member sequentially passes through the third preformed hole 310 and the second preformed hole 210, and the external thread thereof is fixed to the internal thread of the first preformed hole 110 by screwing. Preferably, the second member 200 is a tubular structure that is used to protect the embedment from corrosion from the external environment after the embedment is secured to the first member of the present invention. And at the same time it can ensure the anchoring depth. It will be appreciated by those skilled in the art that the length of the second member 200, i.e., the depth of the second preformed hole, of the present invention may be adjusted according to the depth of the external connection member or the length of the external connection member to be anchored.
Preferably, the third member 300 is a pipe orifice sealing ring structure, which is sleeved outside the second member 200, and the third member 300 is embedded in the concrete together with the second member 200 and the first member 100, and the surface of the third member is flush with the surface of the concrete. The third member 300 plays a role in waterproofing, preventing the bolts inside the second member 200 from being corroded, and simultaneously preventing grout from being poured into the inside of the second member 200 during the concrete pouring process. Further, the third member 300 is provided with a guide portion 350, and in the use state, the indication direction of the guide portion 350 is directed to the extension direction of the short axis of the two central axes of the first circumscribed rectangle.
Specifically, the first external rectangle is a non-positive minimum external rectangle that is a cross section of the first component 100 perpendicular to the axis direction of the first prefabricated hole 110, the non-positive minimum external rectangle is the first external rectangle, the first external rectangle includes two central axes with different lengths, and an intersection point of the two central axes with different lengths of the first external rectangle is coaxial with the first prefabricated hole.
In some preferred embodiments of the present invention, the first component 100 is a truncated pyramid structure, in particular, the truncated pyramid structure of the first component of the present invention is a non-regular truncated pyramid structure, which may be a non-regular inverted truncated pyramid structure, or a non-regular inverted truncated pyramid structure. I.e. its median cross-section perpendicular to the axis of the first preformed hole is a non-regular quadrilateral, a non-regular hexagon, a non-regular octagon, etc. The length mutually different's that non-positive arris platform has axis, its installation can prevent the displacement drunkenness, is convenient for fix a position the installation better, and non-positive arris platform can cooperate the accurate installation direction of guide part simultaneously to in the force of bearing better.
In some preferred embodiments, the first member 100 has a first end surface and a second end surface perpendicular to the axial direction of the first preformed hole 110 and parallel to each other, and the first member 100 is connected with the second member 200 through the first end surface, and the second end surface is disposed away from the second member 200. Further, the cross-sectional area of the middle section of the first member 100 perpendicular to the axis of the first preformed hole 110 is smaller than that of the second end face; the non-positive minimum circumscribed rectangle of the middle cross-section has a first symmetry axis and a second symmetry axis, which are the long axis and the short axis, respectively, and the length of the short axis is greater than the outer diameter of the tubular structure of the second member 200 and less than the length of the long axis, see the attached drawing, which illustrates a non-positive inverted quadrangular frustum structure with a rectangular middle cross-section, i.e., a minimum circumscribed rectangle, wherein the area of the cross-section is the same as the cross-sectional area of the minimum circumscribed rectangle. When the first part of the invention is in a structure of a non-regular inverted truncated five-edge table, a non-regular inverted truncated six-edge table, a non-regular inverted seven-edge table, a non-regular inverted eight-edge table and the like, the area of the minimum circumscribed rectangle is larger than the area of the cross section of the first part.
In other preferred embodiments, referring to the drawings, the upper end and the lower end of the frustum body structure of the first component 200 are respectively a first end face and a second end face, wherein the first end face and the second end face are parallel, and the centers of the first end face and the second end face are coaxially arranged with the axis of the first prefabricated hole 110. Specifically, the first end surface and the second end surface are both perpendicular to the axis of the first prefabricated hole 110, and the first end surface facilitates connection and fixation of the first component and the second component. The second end surface is convenient for pre-buried anchoring and fixing of the in-situ replacement auxiliary embedded part. The skilled person can set the structure of the frustum of a chamfer of the first component at will, as long as the cross-sectional area of the middle section is larger than that of the second end face, and the middle section perpendicular to the axis of the first preformed hole has only two symmetry axes with different lengths, namely a first symmetry axis and a second symmetry axis, and the length of the second symmetry axis is larger than the outer diameter of the tubular structure of the second component 200 and smaller than that of the first symmetry axis.
The length of second symmetry axle is less than the length of first symmetry axle, and this setting can effectively avoid the installation to take place to twist reverse, reduces secondary operation, practices thrift the cost. The length of the second symmetry axis is larger than the outer diameter of the tubular structure of the second part 200, so that the second part 200 can be conveniently connected with the first part 100, and meanwhile, the contact area between the embedded part and the peripheral concrete or other base materials at the bottom is large, so that the connection strength and the anchoring strength of the in-situ replacement auxiliary embedded part are improved, and the stability is enhanced.
In other embodiments of the present invention, the first member 100 is an ellipsoid-like structure, and specifically, it may be an ellipsoid-like body stretched up and down by the same height along the horizontal axis of symmetry of the ellipsoid, or an ellipsoid-like body stretched up and down by the same height along the vertical axis of symmetry and the horizontal axis of symmetry of the ellipsoid.
When the first component is in an ellipsoid-like structure, the minimum circumscribed rectangle of the middle section of the first component 100 perpendicular to the axial direction of the first preformed hole 110 is located at the intersection point of the two central axes of the first circumscribed rectangle, that is, the middle section of the first component 100 perpendicular to the axial direction of the first preformed hole 110 is in an ellipse shape, the product of the minor axis and the major axis of the middle section of the first component is the area of the minimum circumscribed rectangle, and the area of the minimum circumscribed rectangle is 4/pi times of the middle section of the first component 100 perpendicular to the axial direction of the first preformed hole 110. While the intersection of the major axis and the minor axis thereof is located in the axial extension direction of the first preform hole 110.
In the preferred embodiment of the present invention, referring to the drawings, in the preferred embodiment of the present invention, the outer surface of the first part ellipsoid is composed of a first end surface and a second end surface which are perpendicular to the axial direction of the first preformed hole 110 and are parallel to each other, and an arc surface which is connected and sealed with the first end surface and the second end surface at the same time, specifically, the upper end of the first part is the first end surface, the lower end of the first part is the second end surface, and the centers of the first end surface and the second end surface are coaxially arranged with the first preformed hole 110. The first end face facilitates the connection and fixation of the first component and the second component. The second end surface is convenient for pre-buried anchoring and fixing of the in-situ replacement auxiliary embedded part. The ellipsoid-like structure of the first member can be optionally set by those skilled in the art, as long as the cross-sectional area of the cross-section is larger than that of the second end face, and it is also required to ensure that the middle cross-section perpendicular to the axis of the first preformed hole has only two symmetry axes with different lengths, namely a first symmetry axis and a second symmetry axis, and the length of the second symmetry axis is larger than the outer diameter of the tubular structure of the second member 200 and smaller than the length of the first symmetry axis.
The length of second symmetry axle is less than the length of first symmetry axle, and this setting can effectively avoid the installation to take place to twist reverse, reduces secondary operation, practices thrift the cost. The length of the second symmetry axis is larger than the outer diameter of the tubular structure of the second part 200, so that the second part 200 can be conveniently connected with the first part 100, and meanwhile, the contact area between the embedded part and the peripheral concrete or other base materials at the bottom is large, so that the connection strength and the anchoring strength of the in-situ replacement auxiliary embedded part are improved, and the stability is enhanced.
Preferably, the first prefabricated hole 110 does not penetrate to the bottom of the first component 100, that is, the first prefabricated hole 110 does not penetrate to the second active surface, and by such arrangement, the external connecting component of the present invention can be conveniently replaced in situ, and when the external connecting component needs to be replaced, the replacement work does not need to spend extra man-hours, so that the construction efficiency is improved, and the construction cost is reduced.
Furthermore, the first component is of a reversed frustum structure or an ellipsoid-like structure, and under the action of tensile load in concrete, the first component can save materials and has better bearing capacity than a regular frustum.
In some preferred embodiments, the directions of extension of the minor axes of the cross-sections of the first member 100 perpendicular to the axial direction of the first preformed hole 110 are the same. Specifically, a cross section of the first member 100 perpendicular to the axial direction of the first preformed hole 110 includes a first end surface and a second end surface, and the extension direction of the short axis of the first active surface is the same as the extension direction of the short axis of the second active surface.
The first member may be structured as desired by those skilled in the art, as long as the minimum circumscribed rectangle of the cross-section perpendicular to the axial direction of the first preform hole is a non-regular rectangle, the intersection point of the two central axes of the minimum circumscribed rectangle is located at the axial line of the first preform hole, and the extension directions of the short axes of the cross-sections of the first member perpendicular to the axial direction of the first preform hole are the same.
Specifically, when the first component is a chamfered frustum structure, it is under tension: under the action of a tensile load of 50KN, the strength of the regular prism frustum is177MPa, the intensity of the inverted frustum body is 171MPa, the bearing capacity of the inverted frustum body is superior to that of the regular frustum body, and concrete damage such as concrete cone damage can be effectively controlled. Under the action of shearing force and under the action of 50KN shearing force load parallel to the first symmetrical axis direction, the strength of the frustum body of the regular pyramid is 169MPa, the strength of the frustum body of the chamfered pyramid is 168MPa, and the stress of the frustum body of the chamfered pyramid is superior to that of the frustum body of the regular pyramid; under the action of a 50KN shear load parallel to the second symmetry axis direction, the strength of the frustum body of the regular pyramid is 163MPa, the strength of the frustum body of the reverse pyramid is 161MPa, and the stress of the frustum body of the reverse pyramid is superior to that of the frustum body of the regular pyramid. In particular, when the anchor bolt is under tension,
wherein N isRkcThe standard value of the tensile bearing capacity when the concrete cone is damaged;
AcNthe projected area of the cone is actually damaged by concrete;
can know NRkcAnd AcNIs in direct proportion.
When the anchor bolts are tensioned, the concrete cone is damaged, and under the condition of no spacing effect or edge effect, each anchor bolt reaches the critical spacing S of the standard value of the tension bearing forcecrNGenerally 3hef (buried depth), referring to fig. 7, the shape of the inverted frustum is similar to the shape of the concrete cone, the inverted frustum shape can better ensure the distance between the anchor bolts compared with the regular frustum shape, the projected area of the concrete cone for actual damage is larger, therefore, the bearing capacity is higher, and the material is saved. The auxiliary anchoring part is used as an auxiliary part for anchoring external connecting parts such as an anchor bolt, an embedded part and the like, the uplift resistant structure of the auxiliary anchoring part is embedded in concrete, and the stress is equal to that of the anchor bolt.
When the anchor bolt is sheared, tau is equal to V/A, when the stress direction is parallel to the short axis direction, the shear area in the short axis direction is larger than that in the long axis direction, and under the condition that the shearing force is constant, the larger A is, the smaller tau is, and the better the stress is. In summary, the shearing force bearing capacity of the second symmetry axis direction of the chamfered frustum body is superior to that of the first symmetry axis direction, the chamfered frustum body can be accurately subjected to stress analysis, a person skilled in the art can adjust the installation direction according to the load condition, and the accurate stress analysis is carried out on installation so as to ensure that the bearing capacity of the chamfered frustum body is the maximum.
Similarly, in other preferred embodiments, when the first member is an ellipsoid-like structure, which is under tensile load in concrete, it has a better load-bearing capacity than a sphere, specifically, under tension: under the action of a tensile load of 50KN, the stress of the sphere is 191MPa, the strength of the ellipsoid is 182MPa, the stress of the ellipsoid is superior to that of the sphere, and the concrete damage such as concrete cone damage can be effectively controlled. Under the action of shearing force, under the action of 50KN shearing load parallel to the long axis direction, the strength is 182MPa, under the action of 50KN shearing load parallel to the short axis direction, the strength is 173MPa, and the shearing force parallel to the short axis direction is better. Based on the above-mentioned shear force applied to the anchor bolt, τ is equal to V/a, and when the force-applied direction is parallel to the short axis direction, the shear area in the short axis direction is larger than that in the long axis direction, and when the shear force is constant, the larger a, the smaller τ, and the better the force is applied. Therefore, the shear capacity of the short axis direction of the ellipsoid is superior to that of the long axis direction, the ellipsoid can be accurately subjected to stress analysis, a person skilled in the art can adjust the installation direction according to the load condition, and the ellipsoid is accurately subjected to stress analysis to be installed so as to ensure that the bearing capacity of the ellipsoid is the maximum.
In some preferred embodiments, the third member 300 is provided with a guide portion 350, and in the use state, the direction indicated by the guide portion 350 is a second symmetrical axis extending direction of the middle section of the first member 100 perpendicular to the axis of the first prefabricated hole 110. I.e. the second symmetry axis extension of the truncated pyramid structure of the first part 100. The guide part 350 is arranged, so that a constructor can effectively adjust the installation direction of the bearing device according to the stress condition of each direction of the load, and the bearing device can achieve the best bearing. The guide part of the invention can be a character or graphic indication convexly carved on the upper end part of the third component, can also be an arrow structure extending along the direction deviating from the third prefabricated hole, or can be a tangent structure with the tangential direction of the upper end part of the third component being flush, and the position of the tangent structure relative to the upper surface of the third component is the position shown by the guide part.
Preferably, referring to the drawings, the third member 300 includes a bottom wall 320 and a side wall 330, the side wall 330 has a first end and a second end, the first end and the second end are opposite, the first end of the side wall 330 is fixed to the bottom wall 320 and forms a seal along the circumference of the bottom wall 320, the second end of the side wall 330 extends in a direction away from the bottom wall 320 to form a middle protection chamber and a terminal installation part, further, the inner diameter of the protection chamber is closely matched with the outer diameter of the second member 200, and the end of the second member 200 facing away from the first member 100 is arranged in the protection chamber; a third pre-fabricated aperture 310 extends through the bottom wall 320 and communicates with the guard chamber. One end of the second component 200, which is far away from the first component 100, enters the protection chamber through the mounting part to be tightly matched with the bottom wall, and at the moment, the outer diameter of the second component 200 is also tightly matched with the inner diameter of the protection chamber of the third component, so that sealing protection is facilitated.
Further, the bottom wall 320 extends along the side wall 330 to form a C-shaped connecting portion 340, the C-shaped connecting portion 340 is located outside the protection chamber and opens toward the protection chamber; the upper end of the C-shaped connecting portion 340 is connected to the bottom wall 320, and referring to the drawing specifically, the bottom wall 320 extends in a direction away from the third preformed hole 310 to form a guide portion 350 in an arrow structure, and the upper end of the C-shaped connecting portion 340 is connected to the lower end of the guide portion 350. A gap is left between the lower end of the C-shaped connecting portion 340 and the sidewall 330. The gap facilitates penetration of the auxiliary rebar. The C-shaped connecting part 340 of the in-situ replacement type auxiliary embedded part is used for installing auxiliary steel bars, and the in-situ replacement type auxiliary embedded part can be connected with the auxiliary steel bars through the C-shaped connecting part 340 to jointly form an auxiliary embedded system. The system can reversely draw the concrete under the action of external force, so that the concrete is prevented from being damaged. Meanwhile, the system is connected with the main ribs, so that the concrete pouring process can be prevented from shifting, and accurate pre-embedding is realized.
In some preferred embodiments, referring to the figures, the lower end of the C-shaped connecting portion 340 extends away from the outer diameter of the sidewall 330 by a set length to form a reinforced portion, the set length being less than the height of the C-shaped connecting portion 340. The extending direction of the reinforced portion and the axial direction of the second preformed hole 210 form an included angle, and the included angle is preferably an acute angle. The reinforcing portion serves to reinforce the C-shaped connecting portion 340.
In some preferred embodiments, third member 300 of the present invention is a flexible stretchable member, which may be made of rubber, which is easily available and low cost, and has good sealing and moisture-proof effects.
It is understood that the first part 100, the second part 200, and the third part 300 of the in-situ replacement auxiliary embedded part may be connected in sequence, or may be integrally formed. Such as integrally molding the first member 100 with the second member 200, or integrally molding the first member 100, the second member 200, and the third member 300.
In the technical solution in the embodiment of the present application, at least the following technical effects and advantages are provided:
the in-situ replacement type auxiliary embedded part is suitable for embedded parts with multiple specifications, and can realize in-situ replacement of external connecting pieces such as the embedded parts, improve the construction efficiency and reduce the maintenance cost.
The first part of the in-situ replacement type auxiliary embedded part is expanded relative to the second part to form an anti-pulling structure, and the contact area of the first part and the periphery of the bottom is large, so that the connection strength and the anchoring strength of the in-situ replacement type auxiliary embedded part are improved; meanwhile, the two symmetrical shafts with different lengths can effectively avoid torsion in the installation process, reduce secondary processing and save material cost; meanwhile, the first component is matched with the guide part of the third component, so that a constructor can adjust the installation direction according to the load condition, and the installation is carried out through accurate stress analysis so as to ensure that the bearing capacity of the construction equipment is the maximum. The third component has good sealing and damp-proof effects, and can prevent slurry leakage in the concrete pouring process, so that the second component and the first component are prevented from being blocked by the slurry to influence use. Meanwhile, the third component can form an auxiliary embedded system by matching with auxiliary reinforcing steel bars, and the system can reversely draw concrete under the action of shearing force, so that concrete damage forms such as shearing and prying damage, edge damage and the like are avoided.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. The utility model provides an auxiliary built-in fitting of normal position replacement type which characterized in that, the auxiliary built-in fitting of normal position replacement type is including the first part, second part and the third part that connect gradually, wherein:
the first part is an anti-pulling structure which is larger than the second part in expansion, the second part is a tubular structure, and the third part is a pipe orifice sealing ring structure;
the first component, the second component and the third component are coaxially provided with a first prefabricated hole, a second prefabricated hole and a third prefabricated hole respectively; in a use state, the external connecting piece can sequentially penetrate through the third prefabricated hole and the second prefabricated hole and is fixedly connected with the first component through the first prefabricated hole;
the third component is provided with a guide part, and in a use state, the indication direction of the guide part points to the extension direction of the short shaft in the two central axes of the first external rectangle;
the first external rectangle is the minimum external rectangle of the middle section of the first component perpendicular to the axis direction of the first prefabricated hole, and the intersection point of the two central axes of the first external rectangle is located on the axis of the first prefabricated hole.
2. The in-situ replacement auxiliary embedment of claim 1, wherein the first pre-fabricated hole does not extend through the first component.
3. The in-situ replacement auxiliary embedment of claim 1, wherein the third member includes a bottom wall and a side wall, the side wall having a first end and a second end, the first end and the second end being opposite, the first end of the side wall being secured to the bottom wall and forming a seal, the second end of the side wall extending away from the bottom wall to form a central shielding chamber and a terminal mounting portion,
the inner diameter of the protection cavity is closely matched with the outer diameter of the second component, and one end of the second component, which is far away from the first component, is arranged in the protection cavity; the third preformed hole penetrates through the bottom wall and is communicated with the protection chamber.
4. The in-situ replacement auxiliary embedment of claim 3, wherein the bottom wall extends in the direction of the side wall to form a C-shaped connection, the C-shaped connection being located outside the shielding chamber and opening toward the shielding chamber; the upper end part of the C-shaped connecting part is connected with the bottom wall, and a gap is reserved between the lower end part of the C-shaped connecting part and the side wall.
5. The in-situ replacement auxiliary embedded part according to claim 4, wherein the lower end of the C-shaped connecting part extends for a set length in a direction away from the outer diameter of the side wall to form a reinforcing part, and the set length is smaller than the height of the C-shaped connecting part.
6. The in-situ replacement auxiliary embedded part according to claim 1, wherein the first prefabricated hole is an internally threaded hole, the internal thread of the first prefabricated hole is matched with the external thread of the external connecting piece, and the first part is in threaded connection with the external connecting piece.
7. The in-situ replacement auxiliary embedment of claim 1, wherein the first member is of an ellipsoid-like structure, and a mid-section of the first member perpendicular to the axis of the first pre-hole is elliptical.
8. The in-situ replacement auxiliary embedded part according to claim 1, wherein the first part is of a reversed frustum structure, and a middle section of the first part, which is perpendicular to the axis of the first prefabricated hole, is a quadrangle, a hexagon or an octagon.
9. The in-situ replacement auxiliary embedment of any one of claims 1-8, wherein the third member is made of a flexible, stretchable material.
10. The in-situ replacement auxiliary embedment of any one of claims 1-8, wherein the first member, the second member and the third member are integrally formed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010858262.7A CN111809745B (en) | 2020-08-24 | 2020-08-24 | In-situ replacement type auxiliary embedded part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010858262.7A CN111809745B (en) | 2020-08-24 | 2020-08-24 | In-situ replacement type auxiliary embedded part |
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| CN111809745A true CN111809745A (en) | 2020-10-23 |
| CN111809745B CN111809745B (en) | 2022-03-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112597832A (en) * | 2020-12-10 | 2021-04-02 | 上海闻泰信息技术有限公司 | Rectangular piece installation deviation judgment method and device |
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| CN203129335U (en) * | 2013-01-25 | 2013-08-14 | 张永康 | T-shaped embedded part |
| CN205189136U (en) * | 2015-12-09 | 2016-04-27 | 刘平原 | Removable type embedded anchor |
| CN210067058U (en) * | 2019-04-28 | 2020-02-14 | 法施达(大连)实业集团有限公司 | Embedded part |
| CN210439470U (en) * | 2019-08-07 | 2020-05-01 | 中铁电气化局集团有限公司 | Anchor rod type anchor bolt with replaceable original position |
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| GB2169328A (en) * | 1984-12-05 | 1986-07-09 | Hollow Core Systems | Resilient attachment for cladding or panel |
| CN101473092A (en) * | 2006-06-13 | 2009-07-01 | 伍德斯托克泊卡逊有限公司 | Recess former for concrete panels |
| CN203129335U (en) * | 2013-01-25 | 2013-08-14 | 张永康 | T-shaped embedded part |
| CN205189136U (en) * | 2015-12-09 | 2016-04-27 | 刘平原 | Removable type embedded anchor |
| CN210067058U (en) * | 2019-04-28 | 2020-02-14 | 法施达(大连)实业集团有限公司 | Embedded part |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112597832A (en) * | 2020-12-10 | 2021-04-02 | 上海闻泰信息技术有限公司 | Rectangular piece installation deviation judgment method and device |
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| CN111809745B (en) | 2022-03-25 |
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