CN111576622A - Connecting structure of prefabricated column and foundation column and construction method thereof - Google Patents
Connecting structure of prefabricated column and foundation column and construction method thereof Download PDFInfo
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- CN111576622A CN111576622A CN202010543611.6A CN202010543611A CN111576622A CN 111576622 A CN111576622 A CN 111576622A CN 202010543611 A CN202010543611 A CN 202010543611A CN 111576622 A CN111576622 A CN 111576622A
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 107
- 239000010959 steel Substances 0.000 claims description 107
- 238000004873 anchoring Methods 0.000 claims description 26
- 239000004570 mortar (masonry) Substances 0.000 claims description 19
- 238000003466 welding Methods 0.000 claims description 19
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 5
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 25
- 238000005452 bending Methods 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 6
- 238000012937 correction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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Abstract
The invention provides a connecting structure of a prefabricated column and a foundation column and a construction method thereof. The connecting structure of the prefabricated column and the foundation column provides the shear force of the horizontal load born by the prefabricated column by utilizing a rigid connection mode, has obvious shear resistance, can also provide enough rigidity, plays a role of jointly bearing bending moment and meeting the bending resistance, and generally realizes definite force transmission path and ensures force transmission; and under the condition of ensuring the stress, the whole structure is simple, the installation speed is improved, and the construction cost is reduced. The problems of poor installation strength and rigidity, undefined force transmission path, high manufacturing cost and complex construction of the prefabricated column in the prior art are solved.
Description
Technical Field
The invention relates to the field of building construction, in particular to a connecting structure of a prefabricated column and a foundation column and a construction method thereof.
Background
At present, the connected mode of prefabricated post and foundation column on the market mainly includes: (1) wet seam joining; (2) the grouting sleeve connection is that the grouting sleeve is embedded in the prefabricated part, the dowel bars extend out of the foundation, and after the grouting sleeve is installed in place, special high-strength mortar is pressed in from the outside to form integral connection; (3) grouting anchor connection formed by grouting metal corrugated pipes; (4) tenon type connection, namely, making the bottom end of a prefabricated column into a tenon and extending out of a steel bar, locating the prefabricated column at the top end of a foundation, after correction and in-place, welding the steel bars extending out of an upper column and a lower column mutually, adding stirrups, pouring concrete after a paper film to form a whole, and thus the construction is complicated; (5) the post-tensioning method prestress connection is carried out, and the foundation and the prefabricated column are connected into a whole through the post-tensioning method prestress; (6) after the foundation and the prefabricated column are butted in the welding connection, the longitudinal steel bar is directly welded on the steel plate; (7) the high-strength bolt connection is realized, steel plates are embedded in the prefabricated columns, and then the high-strength bolts are used for connection, but the cross section is weakened more, the rigidity of the cross section is greatly reduced, the stress of the cross section is increased rapidly, and the stress concentration phenomenon occurs; (8) a plurality of column base connecting seats are embedded at the bottom of a prefabricated column to form dry connection with a foundation extension bolt. However, the connection of the prefabricated column and the foundation column in the prior art generally has the following problems: the prefabricated column and the foundation connecting node of the assembly type frame structure have poor ductility, and energy cannot be well dissipated under the action of an earthquake; the joint of the general prefabricated column and the foundation weakens the column section more, influences the strength and rigidity of the prefabricated column, has an undefined force transmission path and simultaneously gives consideration to the transmission of shearing force and bending moment; the connection structure adopts a large amount of steel, so that the manufacturing cost is high; the construction is complicated, and the construction progress is influenced. Therefore, the design of the prefabricated column and foundation column connecting structure meeting the market demands has important significance.
Through the massive search of the applicant, for example, a patent with the patent number of CN105926771B discloses a middle joint connecting structure for assembling an integral frame column beam and a construction method thereof, and for example, a patent with the patent number of CN104294753B discloses a bridge prefabricated hollow pier column connecting structure, but the construction method generally has complex steps.
In summary, in the field of the connection structure of the prefabricated column and the foundation column, there is a technical problem to be solved urgently.
Disclosure of Invention
Based on the technical scheme, the invention provides a connecting structure of a prefabricated column and a foundation column and a construction method thereof to solve the problems of undefined installation stress, fussy construction and high construction cost of the prefabricated column and the foundation column in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a connecting structure of a prefabricated column and a foundation column comprises the prefabricated column, the foundation column and a node area, wherein the prefabricated column and the foundation column are connected with each other, a pre-embedded part is pre-embedded in the bottom of the prefabricated column in the node area, a foundation column pre-embedded anchor bolt is pre-embedded in the node area and can be connected with the pre-embedded part, and the prefabricated column and the foundation column are integrally formed in the node area through cast-in-place high-strength mortar.
Optionally, at least two longitudinal steel bars and the anchoring steel bars corresponding to the longitudinal steel bars one to one are embedded in the prefabricated column, and the longitudinal steel bars and the anchoring steel bars are connected through connecting pieces.
Optionally, the embedded part at the bottom of the precast column comprises an embedded anchor plate, a first channel steel shear key and a second channel steel shear key, and the first channel steel shear key is connected to the upper part of the anchor plate and located between the anchor steel bars; the second channel steel shear key is connected to the lower portion of the anchor plate and is in the same straight line with the first channel steel shear key.
Optionally, a first notch is reserved at the bottom of the prefabricated column.
Optionally, the anchoring bar extends to the bottom of the precast column and is connected with the anchor plate.
Optionally, the anchor plate is provided with a plurality of preformed holes.
Optionally, a plurality of crab-bolts of foundation post pre-buried, a plurality of crab-bolts with a plurality of preformed holes one-to-one and pass the preformed hole it is fixed through two nuts in the first notch, just be provided with the leveling nut on a plurality of crab-bolts respectively.
Optionally, a second notch is reserved at the connecting end of the foundation column and the precast column, and reinforcing steel bars are pre-embedded at the bottom of the second notch.
Optionally, high-strength shrinkage-free mortar can be injected into the second notch.
In addition, the invention also provides a construction method of the connection structure of the precast column and the foundation column, which comprises the following steps:
a. performing threading processing on one end of the longitudinal steel bar to obtain a first threading end, and performing threading processing on one end of the anchoring steel bar to obtain a second threading end;
b. pre-burying an embedded part of the prefabricated column, wherein the embedded part meets the following requirements: welding one end of the anchoring steel bar which is not subjected to threading treatment on the anchor plate, welding the first channel steel shear key in the middle of the anchor plate and between the anchoring steel bars, welding the second channel steel shear key at the bottom of the anchor plate and on the same straight line with the first channel steel shear key, and designing a plurality of reserved holes on the anchor plate;
c. after the embedded part is installed, connecting a first wire end of the longitudinal steel bar and a second wire end of the anchoring steel bar through a connecting piece, pouring concrete to prepare the prefabricated column, and enabling the prefabricated column to be provided with the first notch through mold design;
d. preparing a base column: pre-burying anchor bolts corresponding to the preformed holes one by one in the foundation column according to the size of the preformed holes, reserving a second notch on the upper part of the foundation column according to the specification of the second channel steel shear key, pre-burying reinforcing steel bars at the bottom of the second notch, and pouring concrete in situ to obtain the foundation column;
e. screwing a leveling nut on an anchor bolt of the foundation column, and injecting high-strength non-shrinkage mortar into the second notch;
f. hoisting the precast column to the upper part of the foundation column, forming a node area at the joint, sequentially penetrating the anchor bolt through a preformed hole and a gasket with a hole, fixing the anchor bolt through double nuts, and reinforcing the anchor bolt through welding;
g. and sealing the joint area by adopting high-strength shrinkage-free mortar.
Compared with the prior art, the invention has the beneficial technical effects that:
1. the connecting structure of the prefabricated column and the foundation column realizes the connection of the prefabricated column and the foundation column by utilizing a rigid connection mode, provides the shearing force of the horizontal load born by the prefabricated column by combining the synergistic action of the poured high-strength shrinkage-free mortar through the first channel steel shear key and the second channel steel shear key, has obvious shearing resistance, simultaneously can provide enough rigidity by connecting the anchor plate and the anchor steel bar which are pre-embedded at the bottom of the prefabricated column, plays a role of jointly bearing bending moment and meeting the bending resistance, and realizes clear force transmission path and guaranteed force transmission on the whole.
2. The connecting structure of the prefabricated column and the foundation column does not influence the strength and rigidity of the prefabricated column, and the steel structure is creatively arranged in the node area, so that the continuity, the integrity and the reliability of the connection of the prefabricated column and the foundation column in the node area are ensured, the seismic performance of the connecting structure is superior to that of the traditional connecting structure, and the installation quality of the connecting structure is ensured.
3. The connecting structure of the prefabricated column and the foundation column is provided with the leveling nut, so that convenience is provided for installation and correction of the prefabricated column, and the preformed hole designed by the embedded anchor plate at the bottom of the prefabricated column plays a role in limiting installation on the whole, so that the installation speed is improved, and the construction cost is reduced.
4. The connecting structure of the prefabricated column and the foundation column has the advantages of simple construction, quick construction progress, lower overall manufacturing cost and obvious reduction of energy consumption of buildings.
Drawings
The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.
Fig. 1 is a schematic connection diagram of a connection structure of a prefabricated column and a foundation column according to an embodiment of the present invention;
FIG. 2 is a schematic sectional view at A-A of a connecting structure of a precast column and a foundation column according to one embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line B-B of a connecting structure of a precast column and a foundation column according to an embodiment of the present invention;
fig. 4 is a schematic view of an anchor bolt in a foundation column of a connecting structure of a precast column and the foundation column according to one embodiment of the present invention;
FIG. 5 is a schematic view showing a top portion of a foundation column of the connecting structure of the precast column and the foundation column according to one embodiment of the present invention;
fig. 6 is a schematic view of a foundation column top grooving of a connecting structure of a precast column and a foundation column according to an embodiment of the present invention.
Description of reference numerals: 1-prefabricating a column; 2-a base column; 3-a connector; 4-a first channel steel shear key; 5-high-strength non-shrinkage mortar; 6-anchor bolt; 7-leveling nut; 8-double screw caps; 9-a first notch; 10-; 11-anchoring a steel bar; 12-an anchor plate; 13-preparing holes; 14-a first channel steel shear key; 15-reinforcing steel bars; 16-longitudinal steel bars; 17-second channel steel shear key.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms described above will be understood by those of ordinary skill in the art according to the specific circumstances.
The invention relates to a connecting structure of a prefabricated column and a foundation column and a construction method thereof, which explain the following embodiments according to the description of attached figures 1-6:
the first embodiment is as follows:
as shown in fig. 1 to 6, the present embodiment provides a connection structure of a precast column and a foundation column, which includes a precast column 1, a foundation column 2 connected to each other, and a node region formed at a connection portion of the precast column 1 and the foundation column 2, wherein an embedded part is embedded in a bottom of the precast column 1 in the node region, an anchor bolt 6 is embedded in the foundation column 2 in the node region, the anchor bolt 6 can be connected to the embedded part, and the precast column 1 and the foundation column 2 are integrally formed in the node region through a cast-in-place mortar high-strength 5.
In a preferred embodiment, at least two longitudinal steel bars 16 and anchoring steel bars 11 corresponding to the longitudinal steel bars 16 one to one are embedded in the precast column 1, and the longitudinal steel bars 16 and the anchoring steel bars 11 are connected through a connecting piece 3; the embedded part at the bottom of the precast column 1 comprises an embedded anchor plate 12, a first channel steel shear key 4 and a second channel steel shear key 17, and the first channel steel shear key 4 is connected to the upper part of the anchor plate 12 and is positioned between the anchor steel bars 11; the second channel steel shear key 17 is connected to the lower part of the anchor plate 12 and is in the same straight line with the first channel steel shear key 4; the anchoring steel bar 11 extends to the bottom of the prefabricated column 1 and is connected with the anchor plate 12; the anchor plate 12 is provided with a plurality of prepared holes 13. In this embodiment, the anchor plate 12 is a steel plate, and its ingenious connection with anchor reinforcing bar 11, longitudinal reinforcement 16 and first channel-section steel shear key 4, second channel-section steel shear key 17 can guarantee the shear force of the horizontal load that the precast column bore, has apparent shear resistance, simultaneously, can provide sufficient rigidity, plays the joint bearing moment of flexure, satisfies bending resistance's effect, and it is clear and definite to realize passing the power route on the whole, and it is guaranteed to pass the power, guarantees the structural strength of precast column 1 on the whole, safe and reliable.
In a preferred embodiment, a first notch 9 is reserved at the bottom of the precast column 1, and the first notch 9 is used for ensuring the connection operation space between the reserved hole of the embedded part at the bottom of the precast column 1 and the anchor bolt 6 of the foundation column 2, so that the convenience of connection between the precast column 1 and the foundation column 2 is promoted, and the construction progress is improved.
In preferred embodiment, 2 pre-buried a plurality of crab-bolts 6 of foundation post, a plurality of crab-bolts 6 with a plurality of preformed holes 13 one-to-one and pass preformed holes 13, crab-bolt 6 passes after preformed holes 13, continue to pass gasket 14, afterwards be in it is fixed through two nuts 8 in the first notch 9, just a plurality of crab-bolts 6 need be provided with leveling nut 7 respectively before passing preformed holes 13. The installation leveling nut 7 can provide convenience for the installation and correction of the prefabricated column, plays a role in limiting installation, contributes to improving the installation speed and the installation accuracy, and reduces the construction cost.
In a preferred embodiment, a second notch 10 is reserved at the connecting end of the foundation column 2 and the precast column 1, and a reinforcing steel bar 15 is embedded at the bottom of the second notch 10. During the installation, high-strength non-shrinkage mortar 5 can be injected into the second notch 10, the second channel steel shear key 17 can be just right the second notch 10 is installed, and after the installation, concrete sealing treatment is continuously carried out on the node area, the strength of the overall structure is further strengthened, and the installation safety is guaranteed.
In addition, in a preferred embodiment, there is provided a construction method of a connection structure of a precast column and a foundation column, including the steps of:
a. performing threading processing on one end of the longitudinal steel bar 16 to obtain a first wire end, performing threading processing on one end of the anchoring steel bar 11 to obtain a second wire end, and connecting the first wire end and the second wire end through a connecting piece 3; in a preferred embodiment, the particular connector 3 is a mechanical sleeve;
b. pre-burying an embedded part of the prefabricated column, wherein the embedded part meets the following requirements: welding one end of the anchor steel bar 11 which is not processed by threading on the anchor plate 12, welding the first channel steel shear key 4 in the middle of the anchor plate 12 and between the anchor steel bars 11, welding the second channel steel shear key 17 at the bottom of the anchor plate 12 and on the same straight line with the first channel steel shear key 4, and designing a plurality of reserved holes 13 on the anchor plate 12;
c. after the embedded part is installed, pouring concrete to prepare the prefabricated column 1, and enabling the prefabricated column 1 to be provided with the first notch 9 through mold design;
d. preparing a base column 2: pre-burying anchor bolts 6 corresponding to the preformed holes 13 one by one in the foundation column 2 according to the size of the preformed holes 13, reserving a second notch 10 at the upper part of the foundation column 2 according to the specification of a second channel steel shear key 17, pre-burying reinforcing steel bars 15 at the bottom of the second notch 10, and pouring concrete in situ to obtain the foundation column 2;
e. screwing a leveling nut 7 on an anchor bolt 6 of the foundation column 2, and injecting high-strength shrinkage-free mortar 5 into the second notch 10;
f. hoisting the precast column 1 to the upper part of the foundation column 2, forming a node area at the joint, reserving a hole 13 and a gasket 14 with a hole in the anchor bolt 6 in sequence, fixing the anchor bolt through a double nut 8, and reinforcing the anchor bolt by welding;
g. and sealing the node area by adopting high-strength shrinkage-free mortar 5.
Example two:
this embodiment should be understood to include all the features of the foregoing embodiments and further explained on the basis thereof: as shown in fig. 1-6, this embodiment provides a connection structure of a precast column and a foundation column, which includes a precast column 1, a foundation column 2, and a node region formed at a joint of the precast column 1 and the foundation column 2, wherein an embedded part is embedded in a bottom of the precast column 1 in the node region, an anchor bolt 6 is embedded in the foundation column 2 in the node region, the anchor bolt 6 can be connected to the embedded part, and the precast column 1 and the foundation column 2 are integrally formed in the node region through a cast-in-place mortar high-strength 5.
In a preferred embodiment, at least two longitudinal steel bars 16 and anchoring steel bars 11 corresponding to the longitudinal steel bars 16 one to one are embedded in the precast column 1, and the longitudinal steel bars 16 and the anchoring steel bars 11 are connected through a connecting piece 3; the embedded part at the bottom of the precast column 1 comprises an embedded anchor plate 12, a first channel steel shear key 4 and a second channel steel shear key 17, and the first channel steel shear key 4 is connected to the upper part of the anchor plate 12 and is positioned between the anchor steel bars 11; the second channel steel shear key 17 is connected to the lower part of the anchor plate 12 and is in the same straight line with the first channel steel shear key 4; the anchoring steel bar 11 extends to the bottom of the prefabricated column 1 and is connected with the anchor plate 12; the anchor plate 12 is provided with a plurality of prepared holes 13. In this embodiment, anchor plate 12 is the steel sheet, anchor reinforcing bar 11 sets up to 4, has anchor reinforcing bar 11 and connecting piece 3 of car silk one end and is connected, and the anchor reinforcing bar 11 that the other end does not have the car silk extends to the bottom of precast column 1 and welds on anchor plate 12, first channel-section steel shear key 4 welds anchor plate 12's middle part and is located between the anchor reinforcing bar 11 the welding of second channel-section steel shear key 17 the anchor plate 12 bottom and with first channel-section steel shear key 4 is on same straight line. In addition, the longitudinal reinforcement 16 overlaps the anchoring reinforcement 11 in a horizontal projection plane. The ingenious connection of above-mentioned structure can guarantee the shear force of the horizontal load that prefabricated post bore, has apparent shear resistance, simultaneously, can provide sufficient rigidity, plays the joint bending moment of bearing, satisfies bending resistance's effect, realizes wholly that the biography power route is clear and definite, passes power the assurance, guarantees prefabricated post 1's structural strength, safe and reliable on the whole.
In addition, in the present embodiment, as shown in fig. 3, the center position of the periphery of the anchor plate 12 needs to be drilled, and the specific size of the drilled hole needs to be determined according to the size of the anchor bolt 6 in the foundation column and the installation redundancy. And in order to increase the corrosion protection requirement, in a preferred embodiment, the embedded part needs to be galvanized or painted.
In the preferred embodiment, the bottom of the precast column 1 is reserved with first notches 9, and when the precast column 1 is prepared, the hole positions of the anchor plates 12 correspond to the first notches 9 one by one, so that in the preferred embodiment, the number of the first notches 9 is four. When the installation first notch 9 is used for guaranteeing the preformed hole of the built-in fitting of prefabricated post 1 bottom and the connection operation space of crab-bolt 6 of foundation column 2 promote the convenience of being connected between prefabricated post 1 and the foundation column 2 improves the construction progress.
In preferred embodiment, 2 pre-buried a plurality of crab-bolts 6 of foundation post, a plurality of crab-bolts 6 with a plurality of preformed holes 13 one-to-one and pass preformed holes 13, crab-bolt 6 passes after preformed holes 13, continue to pass gasket 14, afterwards be in it is fixed through two nuts 8 in the first notch 9, just a plurality of crab-bolts 6 need be provided with leveling nut 7 respectively before passing preformed holes 13. For the one-to-one connection, consequently, a plurality of crab-bolts 6 are four crab-bolts 6, and a plurality of preformed holes 13 are 4 preformed holes 13, and installation leveling nut 7 can provide convenience for the installation correction of prefabricated post, plays the effect of spacing installation, helps improving the speed of installation and the degree of accuracy of installation, reduces the cost of construction.
In a preferred embodiment, a second notch 10 is reserved at the connecting end of the foundation column 2 and the precast column 1, and a reinforcing steel bar 15 is embedded at the bottom of the second notch 10. During the installation, high-strength non-shrinkage mortar 5 can be injected into the second notch 10, the second channel steel shear key 17 can be just right the second notch 10 is installed, and after the installation, concrete sealing treatment is continuously carried out on the node area, the strength of the overall structure is further strengthened, and the installation safety is guaranteed.
In addition, in a preferred embodiment, there is provided a construction method of a connection structure of a precast column and a foundation column, including the steps of:
a. performing threading processing on one end of the longitudinal steel bar 16 to obtain a first threading end, and performing threading processing on one end of the anchoring steel bar 11 to obtain a second threading end;
b. pre-burying an embedded part of the prefabricated column, wherein the embedded part meets the following requirements: welding one end of the anchor steel bar 11 which is not processed by threading on the anchor plate 12, welding the first channel steel shear key 4 in the middle of the anchor plate 12 and between the anchor steel bars 11, welding the second channel steel shear key 17 at the bottom of the anchor plate 12 and on the same straight line with the first channel steel shear key 4, and designing a plurality of reserved holes 13 on the anchor plate 12;
c. after the embedded part is installed, connecting a first wire end of a longitudinal steel bar 16 and a second wire end of an anchoring steel bar 11 through a connecting piece 3, meanwhile, adding a stirrup at the bottom of a prefabricated column 1, pouring concrete to prepare the prefabricated column 1, and enabling the prefabricated column 1 to be provided with a first notch 9 through mold design; in a preferred embodiment, the specific connector 3 is a mechanical sleeve, and the lengths of the wires at the first wire end of the longitudinal bar 16 and the second wire end of the anchoring bar 11 are required to meet the connection requirements of the mechanical sleeve 3,
d. preparing a base column 2: pre-burying anchor bolts 6 corresponding to the preformed holes 13 one by one in the foundation column 2 according to the size of the preformed holes 13, wherein one ends of the anchor bolts 6 need to be subjected to threading treatment to obtain third threading ends, the anchor bolts with the third threading ends face upwards and are far away from the ground during pre-burying, a second notch 10 is reserved at the upper part of the foundation column 2 by utilizing a mould according to the specification of the second channel steel shear keys 17, reinforcing steel bars 15 are pre-buried at the bottom of the second notch 10, concrete is poured in situ, the third threading ends are exposed outside the concrete during pouring of the concrete, and the foundation column 2 is obtained after pouring is finished;
e. screwing a leveling nut 7 on an anchor bolt 6 of the foundation column 2, and injecting high-strength shrinkage-free mortar 5 into the second notch 10;
f. hoisting the precast column 1 to the upper part of the foundation column 2, forming a node area at the joint, sequentially penetrating the anchor bolt 6 through a preformed hole 13 and a gasket 14 with a hole, fixing the anchor bolt through a double nut 8, and simultaneously reinforcing the anchor bolt by welding;
g. and sealing the node area by adopting high-strength shrinkage-free mortar 5.
In conclusion, the invention provides the connecting structure of the prefabricated column and the foundation column and the construction method thereof, which have the advantages of definite stress, stress guarantee, simple structure, high construction safety and accuracy, effective construction efficiency promotion and whole cost reduction.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a connection structure of prefabricated post and foundation column, its characterized in that, includes interconnect's prefabricated post (1), foundation column (2) and the node region that prefabricated post (1) and the junction of foundation column (2) formed, and in the node region the bottom of prefabricated post (1) is pre-buried to have an embedded part, in the node region foundation column (2) pre-buried crab-bolt (6), crab-bolt (6) can with the embedded part is connected, and make through cast-in-place mortar (5) that excels in the node region prefabricated post (1) with foundation column (2) integrated into one piece.
2. A prefabricated column and foundation column connecting structure according to claim 1, wherein at least two longitudinal steel bars (16) and anchoring steel bars (11) corresponding to the longitudinal steel bars (16) one by one are embedded in the prefabricated column (1), and the longitudinal steel bars (16) and the anchoring steel bars (11) are connected through a connecting member (3).
3. A connecting structure of a precast column and a foundation column according to claim 2, wherein the embedded part at the bottom of the precast column (1) comprises an embedded anchor plate (12), a first channel steel shear key (4) and a second channel steel shear key (17), and the first channel steel shear key (4) is connected to the upper part of the anchor plate (12) and located between the anchor bars (11); the second channel steel shear key (17) is connected to the lower portion of the anchor plate (12) and is in the same straight line with the first channel steel shear key (4).
4. A precast column and foundation column connection structure according to claim 3, wherein the precast column (1) is further provided with a first notch (9) at the bottom.
5. A precast column and foundation column connection structure according to claim 4, wherein the anchoring bar (11) is extended to the bottom of the precast column (1) and connected with the anchor plate (12).
6. A precast column and foundation column connection structure according to claim 5, wherein the anchor plate (12) is provided with a plurality of prepared holes (13).
7. A connection structure of precast column and foundation column according to claim 6, characterized in that, a plurality of crab-bolts (6) of foundation column (2) pre-buried, a plurality of crab-bolts (6) with a plurality of preformed holes (13) one-to-one and pass preformed hole (13) it is fixed through two nut (8) in first notch (9), just be provided with leveling nut (7) on a plurality of crab-bolts (6) respectively.
8. A prefabricated column and foundation column connecting structure according to claim 7, wherein a second notch (10) is reserved at the connecting end of the foundation column (2) and the prefabricated column (1), and reinforcing steel bars (15) are embedded at the bottom of the second notch (10).
9. A prefabricated column and foundation column connection according to claim 8, wherein said second rebate (10) is filled with high strength non-shrink mortar (5).
10. A construction method of a connecting structure of a precast column and a foundation column according to any one of claims 1 to 9, comprising the steps of:
a. threading one end of the longitudinal steel bar (16) to obtain a first threading end, and threading one end of the anchoring steel bar (11) to obtain a second threading end;
b. pre-burying a pre-buried part of the prefabricated column: welding one end of the anchoring steel bar (11) which is not subjected to threading treatment on the anchor plate (12), welding the first channel steel shear key (4) in the middle of the anchor plate (12) and between the anchoring steel bars (11), welding the second channel steel shear key (17) at the bottom of the anchor plate (12) and on the same straight line with the first channel steel shear key (4), and designing a plurality of reserved holes (13) on the anchor plate (12);
c. after the embedded part is installed, connecting a first wire end of the longitudinal steel bar (16) and a second wire end of the anchoring steel bar (11) through a connecting piece (3), pouring concrete to prepare the prefabricated column (1), and enabling the prefabricated column (1) to be provided with the first notch (9) through mold design;
d. preparation of base column (2): according to the size of the preformed hole (13), anchor bolts (6) which correspond to the preformed hole (13) in a one-to-one mode are pre-buried in the foundation column (2), a second notch (10) is reserved on the upper portion of the foundation column (2) according to the specification of the second channel steel shear key (17), reinforcing steel bars (15) are pre-buried at the bottom of the second notch (10), and concrete is poured in situ to obtain the foundation column (2);
e. screwing a leveling nut (7) on an anchor bolt (6) of the foundation column (2), and injecting high-strength non-shrinkage mortar (5) into the second notch (10);
f. hoisting the precast column (1) to the upper part of the foundation column (2) and forming a node area at the joint, wherein the anchor bolt (6) sequentially penetrates through a preformed hole (13) and a gasket (14) with a hole, is fixed through a double nut (8), and is reinforced through welding;
g. and sealing the node area by adopting high-strength shrinkage-free mortar (5).
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| CN202010543611.6A CN111576622A (en) | 2020-06-15 | 2020-06-15 | Connecting structure of prefabricated column and foundation column and construction method thereof |
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| CN202010543611.6A CN111576622A (en) | 2020-06-15 | 2020-06-15 | Connecting structure of prefabricated column and foundation column and construction method thereof |
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| CN111576622A true CN111576622A (en) | 2020-08-25 |
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| CN202010543611.6A Pending CN111576622A (en) | 2020-06-15 | 2020-06-15 | Connecting structure of prefabricated column and foundation column and construction method thereof |
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