CN211200927U - Laminated concrete prefabricated column and connecting structure - Google Patents
Laminated concrete prefabricated column and connecting structure Download PDFInfo
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- CN211200927U CN211200927U CN201921907872.0U CN201921907872U CN211200927U CN 211200927 U CN211200927 U CN 211200927U CN 201921907872 U CN201921907872 U CN 201921907872U CN 211200927 U CN211200927 U CN 211200927U
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Abstract
The utility model relates to an assembly type structure field provides coincide concrete precast column and connection structure. The precast concrete post of coincide includes prefabricated post body, post longitudinal reinforcement and stirrup. Wherein the column cavity comprises a middle cavity and an end cavity; the middle cavity and the end cavity are adjacent to each other in the axial direction and are communicated with each other; the area of the cross section of the end cavity is larger than that of the cross section of the middle cavity, so that the end cavity forms an area for arranging the connecting reinforcing steel bars. The composite concrete prefabricated column avoids the on-site mechanical connection of steel bars by adopting the modes of a semi-grouting sleeve, a straight thread sleeve and the like, is simple in on-site steel bar construction and positioning, and can quickly realize the quick hoisting, the in-place and the connection of the composite concrete prefabricated column.
Description
Technical Field
The utility model relates to an assembly type structure field especially relates to a coincide concrete precast column and connection structure.
Background
The fabricated building refers to a building fabricated at a construction site using prefabricated parts. The building has the advantages of high construction speed, small restriction by climatic conditions, labor saving and building quality improvement. The prefabricated concrete structure can effectively save resources and energy, improve the efficiency of the material in the aspects of building energy conservation and structural performance, reduce building garbage and adverse effects on the environment, and meet the requirements of building industrialization, housing industrialization and green buildings. In the fabricated structure, the fabricated concrete frame structure can be applied to large-space buildings such as office buildings, schools, hospitals and the like, and belongs to a structural form which is most widely applied in constructional engineering.
At present, a frame structure system mainly comprising solid prefabricated columns has a plurality of problems and difficulties, and the solid prefabricated columns are large in size, difficult to hoist on site and inconvenient to transport due to the fact that components of the solid prefabricated columns are heavy. The longitudinal steel bars between two prefabricated columns are mostly connected by a semi-grouting sleeve on site, the steel bars are difficult to connect, the connecting process is invisible, and the connecting quality is difficult to ensure. At present, a frame structure system mainly comprising the solid prefabricated columns is low in building efficiency due to various factors, the construction period is long, the cost is increased, and the quality is difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
To solve or at least mitigate at least one of the above-identified technical problems, the present disclosure provides the following aspects.
According to an aspect of the present disclosure, a laminated concrete precast column includes:
a precast column body precast by concrete to be formed in a columnar shape extending along an axis; the prefabricated column body is provided with a column cavity which is communicated along the axis direction;
the column longitudinal rib is arranged along the axial direction of the prefabricated column body and is embedded in the prefabricated column body; and
the hoop is arranged around the column longitudinal bar in a plane, the plane where the hoop is located is perpendicular to the axial direction of the prefabricated column body, and at least part of the hoop is embedded in the prefabricated column body;
wherein the post cavity comprises a middle cavity and an end cavity; the end cavity is positioned at the end part of the prefabricated column body, and the middle cavity and the end cavity are adjacent to each other in the axis direction and are communicated with each other; the area of the cross section of the end cavity is larger than that of the cross section of the middle cavity, so that the end cavity forms an area for arranging connecting steel bars.
According to at least one embodiment of the present disclosure, the cross-sectional shape of the middle cavity is different from the cross-sectional shape of the end cavities.
According to at least one embodiment of the present disclosure, a cross-sectional shape of the central cavity is different from a cross-sectional shape of an outer profile of the precast column body; the cross-sectional shape of the end cavity is the same as the cross-sectional shape of the outer profile of the precast column body.
According to another aspect of the present disclosure, a laminated concrete precast column includes:
a precast column body precast by concrete to be formed in a columnar shape extending along an axis; the prefabricated column body is provided with a column cavity which is communicated along the axis direction;
the column longitudinal rib is arranged along the axial direction of the prefabricated column body and is embedded in the prefabricated column body; and
the hoop is arranged around the column longitudinal bar in a plane, the plane where the hoop is located is perpendicular to the axial direction of the prefabricated column body, and at least part of the hoop is embedded in the prefabricated column body;
the inner wall of at least one end of the prefabricated column body is provided with a sunken part for arranging connecting steel bars, and the sunken part forms a notch on the end face of the prefabricated column body.
According to at least one embodiment of the present disclosure, the recessed portion is provided as a groove extending along an axial direction of the precast column body, and a plurality of grooves are provided at even intervals in a circumferential direction of the precast column body, so that an inner wall of the column cavity where the grooves are provided forms a concave-convex structure.
According to at least one embodiment of the present disclosure, the groove penetrates from one end surface of the precast column body to the other end surface of the precast column body.
According to at least one embodiment of the present disclosure, the preformed post body and the post cavity are each a quadrangular prism; the section of the groove is rectangular, trapezoidal or circular arc, and the inner wall of the groove is arranged to be close to the corresponding column longitudinal rib.
According to at least one embodiment of the present disclosure, the inner wall of one or both ends of the prefabricated column body is provided with the recessed portion, the recessed portion is provided as a groove circumferentially provided around the prefabricated column body, so that the end of the prefabricated column body forms a region with a reduced wall thickness.
According to another aspect of the present disclosure, a connecting structure of a laminated concrete precast column includes:
the laminated concrete prefabricated column adopts any one of the laminated concrete prefabricated columns; one end of the lower laminated concrete prefabricated column is connected with one end of the upper laminated concrete prefabricated column; and
the connecting steel bars are arranged between the lower-layer superposed concrete prefabricated column and the upper-layer superposed concrete prefabricated column, one part of the connecting steel bars is positioned in the concave part of the lower-layer superposed concrete prefabricated column, and the other part of the connecting steel bars is positioned in the concave part of the upper-layer superposed concrete prefabricated column;
concrete is poured at least in the column cavity and the concave part, and the lower-layer superposed concrete prefabricated column and the upper-layer superposed concrete prefabricated column are connected through the connecting reinforcing steel bars and the poured concrete.
According to at least one embodiment of the present disclosure, the connecting reinforcing bars in the recesses are disposed adjacent to the corresponding column longitudinal bars in a plane perpendicular to the axial direction of the prefabricated column body.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1a and 1b are cross-sectional views of two exemplary embodiments of the laminated concrete precast column of the present disclosure, respectively.
Fig. 2 is a longitudinal sectional view of an exemplary embodiment of a laminated concrete precast column of the present disclosure.
FIG. 3 is a cross-sectional view of one embodiment taken at section A-A in FIG. 2.
FIG. 4 is a cross-sectional view of another embodiment taken at section A-A in FIG. 2.
FIG. 5 is a cross-sectional view of one embodiment taken at section B-B of FIG. 2.
FIG. 6 is a cross-sectional view of another embodiment taken at section B-B of FIG. 2.
Fig. 7 is a schematic structural view of the connection structure of the present disclosure.
Fig. 8a and 8b are cross-sectional views of the embodiment shown in fig. 1a and 1b after connecting bars are provided.
Fig. 9a to 9d are cross-sectional views of four further embodiments at section B-B in fig. 2.
Fig. 10a to 10d are cross-sectional views of four different embodiments of the mesh of stirrups in a laminated concrete precast column of the present disclosure.
FIG. 11 is a cross-sectional view of a column cavity of a laminated concrete precast column of the present disclosure chamfered at a corner.
Fig. 12 is a cross-sectional view of fig. 11 after the connecting bars are provided.
Description of reference numerals:
1. prefabricating a column body; 11. a groove; 2. a column longitudinal bar; 3. hooping; 31. a stirrup web; 4. A column cavity; 41. a middle cavity; 42. an end cavity; 5. connecting reinforcing steel bars; 6. a beam plate;
A. the lower layer is superposed with the concrete prefabricated column; B. and laminating the concrete precast column on the upper layer.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The existing assembly concrete frame structure mostly adopts solid prefabricated columns, and the components of the solid prefabricated columns are heavy, so that the tower crane is large in model, difficult to hoist on site and inconvenient to transport. And the longitudinal steel bar between two prefabricated columns is mostly connected by a half grouting sleeve on site, the half grouting sleeve connection refers to a connection mode of combining a straight thread sleeve and a grouting sleeve, the half sleeve is a straight thread sleeve, and the half sleeve is a grouting sleeve. The sleeve is connected to the steel bar for prefabrication and forming at the time of prefabrication in a factory, and is pulled to a field for assembly. Generally, one end of a steel bar belt sleeve is left at the bottom of the component, and steel bars of the lower component are inserted into the sleeve of the upper component one by means of a mirror when the upper component is hoisted. Therefore, the steel bar is difficult to connect, the connecting process is invisible, and the connecting quality is difficult to ensure.
To solve or at least alleviate at least one of the above existing technical problems, according to an embodiment of the present disclosure, there is provided a laminated concrete precast column, referring to cross-sectional views of two exemplary embodiments of the laminated concrete precast column shown in fig. 1a and 1b and a longitudinal-sectional view of one exemplary embodiment of the laminated concrete precast column shown in fig. 2. This prefabricated post of coincide concrete includes that a prefabricated post body 1, post are indulged muscle 2 and stirrup 3. Prefabricated post body 1 is prefabricated through concreting to forming in the mould, and prefabricated post body 1 is the columnar body along an axis extension, and prefabricated post body 1 is equipped with the post cavity 4 that link up along the axis direction. The setting of post cavity 4 makes prefabricated post body 1 become the cavity casing that link up from an tip to another tip, for solid prefabricated post component, can alleviate prefabricated post component's weight greatly, can adopt light-duty tower crane during the site operation, and transportation and hoist and mount are all more convenient. The outer contour shape of the prefabricated column body 1 is not limited herein, and can be designed into corresponding different shapes according to requirements, for example, a rectangular parallelepiped or a cylindrical shape with a rectangular or circular outer contour cross section is generally adopted. When this disclosed coincide concrete precast column of preparation, need pour before forming prefabricated post body 1, set up the steel reinforcement cage in the mould, the steel reinforcement cage includes that the post is indulged muscle 2 and stirrup 3. The column longitudinal ribs 2 are arranged along the axial extension of the prefabricated column body 1, and usually a plurality of column longitudinal ribs 2 are uniformly arranged along the circumferential direction of the prefabricated column body 1 according to the designed spacing distance, and preferably adapt to the cross-sectional shape of the column cavity 4. The extending direction of the column longitudinal ribs 2 is hereinafter referred to as a longitudinal direction, and the direction perpendicular to the axial direction of the prefabricated column body 1 is hereinafter referred to as a lateral direction. The stirrup 3 surrounds the column longitudinal bar 2 in a plane and is arranged, and the plane where the stirrup 3 is located is perpendicular to the axial direction of the prefabricated column body 1. That is to say, the plane at stirrup 3 place transversely sets up, and stirrup 3 encircles from the outside that the post indulges muscle 2 and bindes a plurality of posts and indulge muscle 2, and it is in the same place to indulge muscle 2 with the post with stirrup 3 through tying up or welding usually, is provided with a plurality of stirrups 3 along the vertical interval of prefabricated post body 1. After the column longitudinal bars 2 and the stirrups 3 are arranged, concrete is poured into the mold to form a prefabricated column body 1 with a column cavity 4, and meanwhile, the column longitudinal bars 2 and the stirrups 3 are embedded in the prefabricated column body 1 around the column longitudinal bars 2 to form an integral stress member.
The inner wall of at least one tip of prefabricated post body 1 is equipped with the depressed part that is used for setting up connecting reinforcement, and the depressed part forms the opening at the terminal surface of prefabricated post body 1, that is to say that the depressed part runs through the terminal surface of prefabricated post body 1. The prefabricated column body 1 is a hollow shell structure with an inner wall, and the scheme includes that a concave part can be arranged at one end part of the prefabricated column body 1, or concave parts are arranged at two end parts of the prefabricated column body 1, or concave parts are arranged on the whole axial inner wall of the prefabricated column body 1. The recessed portion referred to herein is a structure recessed downward with respect to a surface on which an inner wall of the prefabricated pillar body 1 is located, and the recessed portion structure thins a wall thickness of the prefabricated pillar body 1 where the recessed portion is located, thereby forming a recessed space in the inner wall of the prefabricated pillar body 1. The effect of depressed part is in order to place the connecting reinforcement when the precast column carries out longitudinal connection, avoids on-the-spot modes such as adopting half grout sleeve, straight thread sleeve to carry out reinforcing bar mechanical connection, and on-the-spot steel bar construction and location are simple, can realize fast hoisting of coincide concrete precast column to take one's place and connect. The connection process is visual, and the quality is easy to control and detect. Simultaneously, the depressed part structure can also make the connecting reinforcement of placing more be close original post in the prefabricated post and indulge muscle 2 to reduce the distance between the overlap joint reinforcing bar, can not cause the weakening of member cross-sectional strength. The end face of the sunken part penetrating through the precast column body 1 means that the sunken part extends to the end face, so that the connecting steel bars can extend into the sunken part from the notch.
Alternatively, referring to the cross-sectional view of the precast concrete column shown in fig. 1a, the stirrup 3 may be in the form of a stirrup mesh 31, the stirrup mesh 31 is a planar mesh structure formed by a steel bar in a transverse plane according to a certain winding rule, the edge of the stirrup mesh 31 is wound outside the longitudinal bar 2 of the column and embedded in the precast column body 1, and the interlaced part of the middle of the stirrup mesh 31 is located in the column cavity 4. The stirrup net piece 31 is suitable for the structures of the cuboid prefabricated column body 1 and the column cavity 4 with the rectangular cross section. Depending on the size of the cross-section of the prefabricated column body 1, the stirrup web 31 used can be embodied in many ways, for example, see the cross-sectional views of four different embodiments of stirrup webs shown in fig. 10a to 10 d. Rectangular + diamond-shaped stirrup webs 31 (fig. 10a), or rectangular + polygonal stirrup webs 31 (fig. 10b), or rectangular + diamond-shaped + polygonal stirrup webs 31 (fig. 10c), or rectangular + circular stirrup webs 31 (fig. 10d) may be used. The larger the cross-section, the more complex the form of the stirrup web 31 used. Referring to the cross-sectional view of the precast concrete laminated column shown in fig. 1b, the stirrup 3 may also be fixed to the outer side of the longitudinal bars 2 in an annularly wound manner, and the stirrup is embedded in the precast column body 1 except for the end portions at both ends. This form of stirrup is suitable for cylindrical prefabricated column body 1 and column cavity 4 structures with circular cross-section.
In an alternative embodiment of the present disclosure, referring to the cross-sectional view of another embodiment at section a-a in fig. 2 shown in fig. 4, the recess may be provided as a groove 11 extending along the axial direction of the precast column body 1, and a plurality of grooves 11 are provided at regular intervals in the circumferential direction of the precast column body 1. Each groove 11 extends in the longitudinal direction, so that the inner wall of the column cavity 4 where the groove 11 is provided forms a concave-convex structure. Alternatively, the groove 11 may extend only within a predetermined length of the inner wall of the end portion of the prefabricated column body 1, or the groove 11 may extend in the entire longitudinal direction of the inner wall of the prefabricated column body 1, and penetrate from one end face of the prefabricated column body 1 to the other end face of the prefabricated column body 1. Two exemplary embodiments of the laminated concrete precast column shown in fig. 1a and 1b are embodiments in which the groove 11 extends in the entire longitudinal direction of the inner wall of the precast column body 1. The cross-sectional view of the precast column body 1 where the groove 11 is provided is formed in a gear-like structure with alternating convexes and concaves. For setting up recess 11 at the whole inner wall of prefabricated post body 1, only set up recess 11 at two tip of prefabricated post body 1, the intermediate segment of prefabricated post can realize simplifying or exempting from the template in the production process, but the template modulization of two tip sections improves the template utilization ratio, and component manufacturing cost reduces, the dismouting of being convenient for of tip template, and production efficiency improves. In addition, the inner wall of the prefabricated column body 1 forms a gear-shaped structure with alternate concave and convex, the interface area of the poured concrete and the original concrete of the prefabricated column body 1 is increased, the cast-in-place concrete and the prefabricated components can form good occlusion, and the integrity of the superposed components is strong.
Optionally, the prefabricated pillar body 1 and the pillar cavity 4 may be both set to be quadrangular prisms, the cross section of the groove 11 is rectangular, trapezoidal or circular arc, and the inner wall of the groove 11 is set to be close to the corresponding pillar longitudinal rib 2; the close meaning means that the shortest distance between the column longitudinal bar 2 close to (forming a lap joint with) the position of the groove 11 and the inner wall of the groove 11 is in the range of 10mm-120 mm. Therefore, the distance between the overlapped reinforcing steel bars can be reduced, and the connecting reinforcing steel bars 5 are close to the position of the original column longitudinal bar 2, so that the weakening of the section of the component can not be caused.
In an alternative embodiment of the present disclosure, referring to the cross-sectional view of an embodiment at section a-a in fig. 2 shown in fig. 3, a recess may be provided in the inner wall of one or both end portions of the precast column body 1 in the form of a groove 11 provided around the circumference of the precast column body 1, i.e., in the form of an annular groove 11, the groove 11 being provided with one turn around the inner wall of the end portion of the precast column body 1 and forming a break in the end face, the wall thickness of the precast column body 1 at the end portion where the groove 11 is provided being thinner than the wall thickness of the middle region where the groove 11 is not provided, such that the end portion of the precast column body 1 forms a region of reduced wall thickness. From another point of view, that is to say the configuration of the groove 11 is such that the inner wall of the end of the pre-fabricated cylinder body 1 is formed in the form of a step. For example, the cross-sectional shape of the column cavity 4 of the prefabricated column body 1 is square, and the cross-sectional shape of the column cavity 4 at the groove 11 at the end of the prefabricated column body 1 is also square, which is not the gear-like structure with alternate convexes and concaves formed in the previous embodiment. The whole annular concave space is formed at the groove 11 and is used for arranging the connecting steel bars.
The present disclosure also provides a laminated concrete precast column, referring to a longitudinal sectional view of an exemplary embodiment of the laminated concrete precast column shown in fig. 2. The laminated concrete precast column is similar to the laminated concrete precast column of the previous exemplary embodiment, and the parts of the same structure are not described again. Wherein the column cavity 4 may include a middle cavity 41 and an end cavity 42; that is, the column cavity 4 varies in the axial direction (length direction) of the prefabricated column body 1. The end cavity 42 is located at the end of the prefabricated column body 1, and the middle cavity 41 and the end cavity 42 are adjacent to each other in the axial direction and are communicated with each other. The area of the cross-section of the end cavity 42 is greater than the area of the cross-section of the middle cavity 41, so that the end cavity 42 forms an area for disposing the connecting bars 5. The middle cavity 41 is positioned in the middle part of the prefabricated column body 1, and the end cavities 42 can be respectively arranged corresponding to the two end parts of the prefabricated column body 1; it is also possible to provide it only at one of the ends, in which case the cavity at the other end is also referred to as the central cavity 41. By making the area of the cross section of the end cavity 42 larger than that of the middle cavity 41, a concave space in which the connecting bar 5 is disposed is formed at the end of the prefabricated pillar body 1. When the prefabricated column body 1 is produced, a conventional simple mold or no mold is adopted in the middle part, and only molds capable of increasing the cross section area of the column cavity 4 are adopted in the two end parts, so that the template is convenient to disassemble and assemble, the production cost of the component is reduced, and the production efficiency is improved.
Optionally, the cross section of the outer contour of the prefabricated column body 1 can be square, circular and the like; the cross section of the central cavity 41 can be square, round, concave-convex and the like. The cross section of the end cavity 42 may be square, which is the same shape as the outer contour of the prefabricated cylinder body 1. See, for example, the cross-sectional views of the other four embodiments at section B-B in fig. 2 shown in fig. 9 a-9 d. Optionally, the cross section of the outer contour of the precast column body 1 is square, and the cross section of the middle cavity 41 is round with a slightly larger diameter; or the cross section of the outer contour of the prefabricated column body 1 is circular, and the cross section of the middle cavity 41 is circular with a slightly larger diameter; or the cross section of the outer contour of the prefabricated column body 1 is square, and the cross section of the middle cavity 41 is a circle (which can be a round hole) with a smaller diameter; or the cross section of the outer contour of the prefabricated column body 1 is circular, and the cross section of the middle cavity 41 is circular with smaller diameter (can be a circular hole). Other various shaped fits are not listed here.
Alternatively, the cross-sectional shape of the central cavity 41 may be different from the cross-sectional shape of the end cavities 42. For example, the cross-section of the middle cavity 41 may be circular, while the cross-section of the end cavity 42 may be square, and the circular shape of the middle portion may be an inscribed circle of the square of the two end portions.
Alternatively, the cross-sectional shape of the central cavity 41 and/or the cross-sectional shape of the end cavity 42 may also be different from the cross-sectional shape of the outer contour of the pre-fabricated post body 1. For example, the cross section of the outer contour of the precast column body 1 is circular, the cross section of the middle cavity 41 can be circular or square, and the cross section of the end cavity 42 can be circular or square.
Alternatively, referring to the cross-sectional view of the column cavity of the laminated concrete precast column of the present disclosure shown in fig. 11 after chamfering the corners and the cross-sectional view of the column cavity after arranging the connecting bars shown in fig. 12, when the cross-sectional shape of the middle cavity 41 or the cross-sectional shape of the end cavities 42 is a shape with corners, such as a square, the chamfering is formed at the four corners of the square cavity, which has the advantage that the chamfered regions at the four corners are easy to demould.
The present disclosure also provides a connection structure of the laminated concrete prefabricated column, referring to the structural schematic diagram of the connection structure shown in fig. 7, the connection structure includes a lower laminated concrete prefabricated column a, an upper laminated concrete prefabricated column B and a connection steel bar 5. The lower laminated concrete prefabricated column A and the upper laminated concrete prefabricated column B both adopt the laminated concrete prefabricated column in any one of the above embodiments; the lower laminated concrete prefabricated column A and the upper laminated concrete prefabricated column B are arranged along the vertical direction, the lower laminated concrete prefabricated column A is located below, the upper laminated concrete prefabricated column B is located above the lower laminated concrete prefabricated column A, and the upper laminated concrete prefabricated column A and the lower laminated concrete prefabricated column B are connected at the adjacent ends through connecting steel bars 5. Connecting reinforcement 5 sets up between lower floor's coincide precast concrete post A and the precast concrete post B of upper strata, and connecting reinforcement 5's lower floor end is located lower floor's coincide precast concrete post A's depressed part, and connecting reinforcement 5's upper strata end is located the depressed part of the precast concrete post B of upper strata. Concrete is at least poured in the column cavity 4 and the concave part, the middle part of the connecting steel bar 5 is embedded in the poured concrete, and the lower-layer superposed concrete prefabricated column A and the upper-layer superposed concrete prefabricated column B are connected through the connecting steel bar 5 and the poured concrete.
In an alternative embodiment of the present disclosure, reference is made to cross-sectional views of different embodiments shown in fig. 8a and 8b, after the connecting rebars are provided. The connecting steel bars 5 in the concave parts are arranged close to the corresponding column longitudinal bars 2 in the plane vertical to the axial direction of the prefabricated column body 1. The close meaning means that the shortest distance between the column longitudinal bar 2 in the concave part and the overlapped connecting reinforcing bar 5 is 10mm-120 mm. For example, the recesses are in the form of axially extending grooves 11, at least one connecting reinforcement 5 is arranged in each groove 11, and the connecting reinforcement 5 is arranged adjacent to the corresponding longitudinal bar 2. Preferably, the connecting bars 5 are disposed closely to both corners of each of the recesses 11 because the corners of each of the recesses 11 are located closer to the longitudinal bar 2 between the two recesses 11.
Optionally, the reinforcement cage may be a plurality of single reinforcements, or may be a tendon, a reinforcement cage, a profile steel, or the like. In embodiments employing a plurality of longitudinally extending grooves 11, the connecting bars 5 are preferably in the form of individual bars or tendons. In embodiments employing the annular groove 11, the connecting reinforcement 5 is preferably in the form of a reinforcement cage or a steel section.
The following describes a construction method of the above connection structure, including:
and setting the lower-layer superposed concrete prefabricated column A in place. And hoisting the lower-layer superposed concrete prefabricated column A in place on site to serve as a lower-layer prefabricated hollow column.
On the basis of the lower-layer superposed concrete prefabricated column A, the beam-slab 6 prefabricated components matched with the lower-layer superposed concrete prefabricated column A are hoisted in place and are correspondingly constructed and connected.
And arranging a connecting steel bar 5 in a concave part of the end part of the lower-layer superposed concrete prefabricated column A for connection, and extending the connecting steel bar 5 by a preset length.
Pouring concrete in at least the column cavity 4 and the concave part of the lower-layer superposed concrete prefabricated column A; after the cast-in-place concrete reaches a certain strength, the connecting steel bars 5 are connected with the upper end part of the lower laminated concrete prefabricated column A through the poured concrete.
And arranging the upper laminated concrete prefabricated column B, and enabling the connecting steel bars 5 to extend into the concave parts of the ends, used for connection, of the upper laminated concrete prefabricated column B. And hoisting the upper laminated concrete prefabricated column B to the upper part of the lower laminated concrete prefabricated column A, and extending the extending end of the connecting steel bar 5 into the concave part corresponding to the lower end part of the upper laminated concrete prefabricated column B.
Concrete is poured in at least the column cavity 4 and the concave part of the upper laminated concrete prefabricated column B, so that the lower laminated concrete prefabricated column A and the upper laminated concrete prefabricated column B are connected with the poured concrete through the connecting steel bars 5. After the upper laminated concrete prefabricated column B on the upper layer is aligned and arranged in place, concrete is poured into the column cavity 4 and the concave part of the upper laminated concrete prefabricated column B, and the upper end of the connecting steel bar 5 is connected with the lower end part of the upper laminated concrete prefabricated column B through the poured concrete, so that the upper and lower prefabricated columns are connected.
Adopt this disclosed coincide concrete precast column and connection structure to construct, avoided on-the-spot modes such as adopting half grout sleeve, straight thread sleeve to carry out reinforcing bar mechanical connection, on-the-spot steel bar construction and location are simple, can realize the quick hoist and mount of coincide concrete precast column to take one's place and connect fast. The connection process is visual, and the quality is easy to control and detect.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. A laminated concrete precast column, comprising:
a precast column body precast by concrete to be formed in a columnar shape extending along an axis; the prefabricated column body is provided with a column cavity which is communicated along the axis direction;
the column longitudinal rib is arranged along the axial direction of the prefabricated column body and is embedded in the prefabricated column body; and
the hoop is arranged around the column longitudinal bar in a plane, the plane where the hoop is located is perpendicular to the axial direction of the prefabricated column body, and at least part of the hoop is embedded in the prefabricated column body;
wherein the post cavity comprises a middle cavity and an end cavity; the end cavity is positioned at the end part of the prefabricated column body, and the middle cavity and the end cavity are adjacent to each other in the axis direction and are communicated with each other; the area of the cross section of the end cavity is larger than that of the cross section of the middle cavity, so that the end cavity forms an area for arranging connecting steel bars.
2. A laminated concrete precast column as recited in claim 1, wherein a cross-sectional shape of said middle cavity is different from a cross-sectional shape of said end cavities.
3. A laminated concrete precast column as recited in claim 1, wherein a cross-sectional shape of said central cavity is different from a cross-sectional shape of an outer contour of said precast column body; the cross-sectional shape of the end cavity is the same as the cross-sectional shape of the outer profile of the precast column body.
4. A laminated concrete precast column, comprising:
a precast column body precast by concrete to be formed in a columnar shape extending along an axis; the prefabricated column body is provided with a column cavity which is communicated along the axis direction;
the column longitudinal rib is arranged along the axial direction of the prefabricated column body and is embedded in the prefabricated column body; and
the hoop is arranged around the column longitudinal bar in a plane, the plane where the hoop is located is perpendicular to the axial direction of the prefabricated column body, and at least part of the hoop is embedded in the prefabricated column body;
the inner wall of at least one end of the prefabricated column body is provided with a sunken part for arranging connecting steel bars, and the sunken part forms a notch on the end face of the prefabricated column body.
5. A laminated concrete precast column as recited in claim 4, wherein said recessed portion is provided as a groove extending in an axial direction of said precast column body, and a plurality of said grooves are provided at regular intervals in a circumferential direction of said precast column body so that an inner wall of said column cavity where said grooves are provided is formed in a concavo-convex structure.
6. A precast concrete column of claim 5, wherein the groove penetrates from one end face of the precast column body to the other end face of the precast column body.
7. A precast laminated concrete column as recited in claim 5 or 6, wherein said precast column body and said column cavity are each a quadrangular prism; the section of the groove is rectangular, trapezoidal or circular arc, and the inner wall of the groove is arranged to be close to the corresponding column longitudinal rib.
8. A precast concrete column according to claim 4, wherein the inner wall of one or both ends of the precast column body is provided with said recess, said recess being provided as a groove arranged circumferentially around the precast column body, providing the end of the precast column body with a region of reduced wall thickness.
9. The utility model provides a connection structure of coincide precast concrete post which characterized in that includes:
a laminated concrete precast column using the laminated concrete precast column according to any one of claims 1 to 5; one end of the lower laminated concrete prefabricated column is connected with one end of the upper laminated concrete prefabricated column; and
the connecting steel bars are arranged between the lower-layer superposed concrete prefabricated column and the upper-layer superposed concrete prefabricated column, one part of the connecting steel bars is positioned in the concave part of the lower-layer superposed concrete prefabricated column, and the other part of the connecting steel bars is positioned in the concave part of the upper-layer superposed concrete prefabricated column;
concrete is poured at least in the column cavity and the concave part, and the lower-layer superposed concrete prefabricated column and the upper-layer superposed concrete prefabricated column are connected through the connecting reinforcing steel bars and the poured concrete.
10. The connecting structure according to claim 9, wherein the connecting reinforcing bars in the recesses are disposed adjacent to the corresponding column longitudinal bars in a plane perpendicular to the axial direction of the prefabricated column body.
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| CN201921907872.0U CN211200927U (en) | 2019-11-07 | 2019-11-07 | Laminated concrete prefabricated column and connecting structure |
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| CN201921907872.0U CN211200927U (en) | 2019-11-07 | 2019-11-07 | Laminated concrete prefabricated column and connecting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778024A (en) * | 2019-11-07 | 2020-02-11 | 三一筑工科技有限公司 | Laminated concrete prefabricated column, connecting structure and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778024A (en) * | 2019-11-07 | 2020-02-11 | 三一筑工科技有限公司 | Laminated concrete prefabricated column, connecting structure and construction method thereof |
| CN110778024B (en) * | 2019-11-07 | 2023-12-05 | 三一筑工科技股份有限公司 | Superposed concrete precast column, connecting structure and construction method thereof |
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Address after: 102206 1st floor, building 6, 8 Beiqing Road, Huilongguan town, Changping District, Beijing Patentee after: Sany Construction Technology Co.,Ltd. Patentee after: TSINGHUA University Address before: Room 301, building 6, No. 8, Beiqing Road, Huilongguan town, Changping District, Beijing Patentee before: SANY CONSTRUCTION TECHNOLOGY Co.,Ltd. Patentee before: TSINGHUA University |