CN217557409U - Prefabricated reinforced concrete column convenient to hoist, beam column structure and building - Google Patents

Abstract

The utility model discloses a prefabricated reinforced concrete post, beam column structure and building of convenient hoist and mount, shown prefabricated reinforced concrete post include prefabricated post body, be provided with the prestressing tendons on the prefabricated post body, the prestressing tendons extends along prefabricated post body length direction, the upper end of prestressing tendons is connected with the stretch-draw end that is fixed in on the prefabricated post body, the stretch-draw end exposes in the surface or the outside of prefabricated post body, through the adjustment the stretch-draw end can be applied for the prefabricated post body and remove for compressive stress's prestressing force. The beam column structure and the building comprise prefabricated reinforced concrete columns. According to the technical scheme, the length of the prefabricated column is set to be longer, and the influence of the hoisting and mounting process on the mechanical property of the prefabricated column can be reduced.

Description

Prefabricated assembled reinforced concrete column, beam column structure and building of convenient hoist and mount

Technical Field

The utility model relates to an assembly type building engineering technical field especially relates to a prefabricated assembled reinforced concrete post, beam column structure and building of convenient hoist and mount.

Background

In the prior art, fabricated buildings generally refer to: a building is assembled from prefabricated parts at a construction site. With the development of modern industrial technology, the prefabricated part parts can comprise prefabricated columns, composite beams (cross-shaped and L-shaped), concrete slabs (composite slabs, double T-shaped slabs and SP slabs) and the like.

In the construction process of the fabricated building, hoisting and connecting the prefabricated parts are indispensable links in the construction process. In the hoisting construction process, the traditional method in the installation site is layered hoisting, such as: and after hoisting and splicing the single-layer prefabricated columns, beams and plates of the building, hoisting and splicing the upper-layer prefabricated columns, beams and plates. To prefabricated post, the hoist and mount process exists: in the transportation process, the prefabricated column which is transversely stored is generally transferred to a transport vehicle in a horizontal hoisting mode, after the prefabricated column is transported to an installation site, hoisting connection points are arranged on the top side of the prefabricated column, and finally the prefabricated column is adjusted to be in a vertical posture from a horizontal state.

The construction method and the structure of the assembly type building are further optimized, and the rapid development of the technology of the assembly type building industry in China is undoubtedly promoted.

SUMMERY OF THE UTILITY MODEL

To the construction method and the structure of above-mentioned proposed to assembly type structure carry out further optimization, can promote the technical problem of the rapid development of china's assembly type structure trade technique undoubtedly, the utility model provides a prefabricated assembled reinforced concrete post, beam column structure and building of convenient hoist and mount. By adopting the technical scheme, the length of the prefabricated column is set to be longer, and the influence of the hoisting and mounting process on the mechanical property of the prefabricated column can be reduced.

To the above problem, the utility model provides a prefabricated assembled reinforced concrete post of convenient hoist and mount solves the problem through following technical essential: the prefabricated reinforced concrete column convenient to hoist comprises a prefabricated column body, wherein a prestressed tendon is arranged on the prefabricated column body, the prestressed tendon extends along the length direction of the prefabricated column body, the upper end of the prestressed tendon is connected with a tensioning end fixed on the prefabricated column body, the tensioning end is exposed on the surface or the outside of the prefabricated column body, and the tensioning end can apply prestress serving as compressive stress to the prefabricated column body and remove the prestress by adjusting the tensioning end.

In the prior art, the prestressing force technology is widely applied to precast beams in the field of buildings, and the concrete principle is as follows: the method comprises the steps of tensioning a steel bar/steel cable (prestressed rib) in a tensioned area of the concrete by using a manual force method, utilizing the retraction force of the steel bar/steel cable to enable the tensioned area of the concrete to be pre-stressed to obtain stored prestress, when a precast beam bears tension generated by external load, firstly offsetting the prestress in the concrete in the tensioned area according to the tension condition, and only enabling the concrete to be tensioned along with the increase of load, so that the cracking of the concrete can be effectively delayed or the cracking condition of the concrete can be avoided.

Different from the application of the prestress technology on a precast beam, the scheme provides a precast column capable of obtaining pre-pressure on the cross section, and as a person skilled in the art, the precast column body is a precast column used for building engineering and used as a beam-column connecting structure component on a building.

The design concept of the scheme aims at that: in the prior art, the length of a prefabricated column adopted in an assembly type building is generally short, the length of a single prefabricated column can meet the requirement of single-layer story height support of the building, in the building assembly process, the single-layer assembly is completed and then the upper-layer assembly is carried out, so that a crane matched with the building assembly needs to be used for reducing the hoisting capacity during hoisting or replacing hoisting machinery meeting hoisting requirements in order to solve the hoisting safety problem, and the introduced problems are that the hoisting efficiency of prefabricated part parts is reduced, the hoisting safety of the prefabricated part parts is reduced and the hoisting cost of the prefabricated part parts is increased along with the increase of the single-layer building area and the increase of the height of the building body layer in the working process, particularly when the plane size of the building is large. When the prefabricated columns are arranged to be longer, for example, for a multi-storey building, the whole length of a single prefabricated column can be adopted to cover each storey of the building, so that the time-consuming problem of on-site laminated connection of the prefabricated columns can be avoided, meanwhile, the integral prefabricated column structure is favorable for guaranteeing the building quality, in the hoisting process, the prefabricated columns are long support pieces relative to the building, so that the building assembly can be completed in a hoisting withdrawing manner of a crane, and the problem of overlong hoisting arms in the construction process can be effectively avoided.

Meanwhile, in the prior art, the prefabricated column is generally prefabricated in a factory, and the prefabricated column generally keeps a horizontal form when prefabricated in the factory. When the precast column is transported from a factory to a storage site or an installation site, a plurality of hoisting points are generally provided in the length direction of the precast column to transfer the precast column to a transport vehicle. However, when the prefabricated column is hoisted on an installation site, the prefabricated column needs to be converted from a horizontal form into a vertical form, which is different from the horizontal form, when the prefabricated column is converted into the vertical form, the lower end of the prefabricated column is supported, a specific hoisting point is generally located at the upper end of the prefabricated column (for example, the concrete hoisting point is arranged at the uppermost prefabricated bracket position), the concrete on the upper side is stressed under the dead weight, and the concrete on the lower side is under tension.

The scheme is adopted, the device comprises the tensioning end, the prestressing tendon is enabled to apply prestressing force which is compressive stress to the precast column along the length direction of the precast column through the tensioning end before the precast column is turned and erected, after the precast column is hoisted, the prestressing force to the precast column is released, meanwhile, the lower end of the precast column is generally embedded into a concrete cup foundation, the upper end of the precast column is exposed, and the tensioning end is set to be connected with the upper end of the prestressing tendon in terms of operability and prestress direction control, so that in the turning and erecting process of the precast column, due to the fact that the prestressing tendon is covered in the range of the prestressing tendon used for generating the prestressing force, concrete on the precast column can be stressed, namely, the concrete is applied with compressive pre-constraint, in the erecting process of the precast column, the situation that the concrete is stressed in the erecting process can be counteracted by the reservation constraint, cracking of the precast column is avoided, after the turning and erecting process is finished, the prestressing force applied to the precast column by the prestressing tendon is removed through the tensioning end positioned on the precast column, and the prestressing tendon can be achieved: aiming at the working condition that the normally used prefabricated column is usually pressed, the prestress on the prefabricated column is released after the hoisting of the prefabricated column is completed, so that the prestress only serves the hoisting and erecting processes of the prefabricated column, and the stress of the prefabricated column in the use process can be prevented from being deteriorated by the prestress after the prestress is released.

As a person skilled in the art, considering the post-release of the prestressing force, the prestressing force should be a non-adhesive prestressing force, in the prestressing force loading mode, a prestressing tendon can be arranged at the inner side of the precast column, and a prestressing tendon can be arranged at the outer side of the precast column, as a preferential mode, considering the safety problem that the prestressing tendon is exposed at the outer side of the precast column, the prestressing force is applied by: and (2) reserving a prestressed duct in the precast column, arranging a prestressed tendon extending along the length direction of the precast column in the prestressed duct, and tensioning the prestressed tendon at the tensioning end of the prestressed tendon to apply prestress to the precast column. In this embodiment, the prestressed duct may be obtained by using a duct pre-embedded in the precast column, the duct is a metal corrugated pipe, and the prestressed duct uses a central hole in the precast column in consideration of distribution of the prestress in the axial direction of the precast column, so that, unlike the case where the prestressed rib is disposed on the outer side of the precast column, first: under the condition of less prestressed tendons, the distribution uniformity of the prestress generated by the prefabricated column in the circumferential direction of the prefabricated column can be uniformly realized, so that each position on each side of the prefabricated column can obtain a certain and relatively uniform prestress, and the upper side and the lower side of the prefabricated column are prevented from being distinguished according to the distribution requirement of the prestress in the erecting process; secondly, in implementation, regarding the anchoring end and the stretching end (one end is the anchoring end and the other end is the stretching end) of the prestressed tendon in the prefabricated column, a plurality of anchoring plates (the prior art and steel bar construction can be adopted) which are pre-embedded in the prefabricated column are arranged at the anchoring end and the stretching end, the anchoring plates at all the ends are arranged along the length direction of the prefabricated column, and all the anchoring plates are positioned between the two ends of the prestressed tendon, so that the prestress can be uniformly covered, and the scheme also has the characteristics of convenient implementation and reliable prestress loading; finally, different from the external arrangement of the prestressed tendons relative to the precast column, the scheme also has the characteristic of safe implementation due to the fact that the required prestress is large and the built-in prestressed tendons also have the characteristic of preventing the external force action. Preferably, it is provided that the geometric center of the anchorage plate is located at the center of the cross section of the prefabricated column or that the anchorage plate is arranged astride/centered with respect to the center of the cross section of the prefabricated column.

The prefabricated reinforced concrete column convenient to hoist adopts the further technical scheme that:

in order to realize the distribution uniformity of the prestress on the cross section of the precast column and obtain unbonded prestress, the prestressed tendon stretching mode with simple structure is set as the following steps: when the prestressed tendon is in a tensioning state, a tensioning section of the prestressed tendon is parallel to the axis of the precast column body;

the quantity of prestressing tendons is a plurality of, and when prestressing tendons is one, prestressing tendons extends along the axis, and when prestressing tendons's quantity is greater than 1, the relative position of stretch-draw section on each prestressing tendons is: annularly distributed about the axis;

the lower end of the prestressed tendon is connected with an anchoring end which is positioned at the bottom of the prefabricated column body or above the bottom, a hole channel for containing the prestressed tendon is formed in the prefabricated column body through a pre-embedded pipe which is pre-embedded in the prefabricated column body, the lower end of the hole channel is connected with the anchoring end, and the upper end of the hole channel is connected with the tensioning end. When the scheme is specifically implemented, the specific installation occasion of the prefabricated column is considered, if the prefabricated column per se is on site in the overturning and erecting process, the side surface of the prefabricated column is allowed to be a prefabricated column supporting point (for example, the prefabricated column comprises a plurality of brackets which are arranged at intervals along the height, the supporting point is positioned at the position of the bracket at the lowest end, and the anchoring end is arranged below the bracket at the lowest end); when the supporting point is positioned at the lower end of the prefabricated column, the end part is anchored so that the prestressed tendons can cover the whole length of the prefabricated column.

Be provided with the bracket that is used for supporting the precast beam on the precast column body, still be provided with the muscle connecting piece of indulging that is located the bracket top on the precast column body, indulge the muscle connecting piece and be: the prefabricated column body is used for connecting a longitudinal rib on a prefabricated beam with the prefabricated column body, and the longitudinal rib connecting piece comprises a first connecting piece and a second connecting piece;

the relationship between any corbel and the longitudinal bar connecting piece configured for the corbel is as follows: the second connecting piece is positioned below the first connecting piece from bottom to top along the height direction of the prefabricated column body;

the first connecting piece is a straight thread sleeve connecting piece;

the second connecting piece is a slurry anchor channel.

In the scheme, the first connecting piece is used for being connected with a longitudinal rib of a prefabricated Liang Dingce, and the second connecting piece is used for being connected with a longitudinal rib of a prefabricated Liang Dece. The scheme aims at the following current situations in the prior art: realize that the steel bar connection mode between precast column and the precast beam has a plurality ofly, include: welded connection (generally not adopt), bolted connection, straight thread muffjoint, thick liquid anchor is connected, traditional bolted connection's connection process complex operation, at precast beam and precast column centering in-process, there is reinforcing bar centering difficulty still in the supporting mode that adopts bolted connection and straight thread muffjoint, the hoist and mount for precast beam take one's place increases consuming time and the problem of the degree of difficulty, thick liquid anchor is connected easily relatively, but rigidity joint strength is generally not as strong as the joint strength that straight thread bush can produce, the technical scheme who not only provides connection convenience, be convenient for ensure beam column structure joint strength simultaneously.

Specifically, the first connecting piece is used for realizing that the steel bars between the precast columns and the precast beams are connected by the straight thread sleeves, the straight thread sleeves are connected in a mechanical connection mode which is high in connection reliability and can guarantee connection strength and connection strength margin, and meanwhile, the first connecting piece is positioned above the second connecting piece and is suitable for being connected with the longitudinal bars of the precast beams Liang Dingce; adopt the second connecting piece to accomplish being connected of precast column and precast beam, aim at considering concrete joint position, adopt one kind only need carry out simple operation at the precast beam downside, can realize the precast beam downside and indulge the technical scheme that muscle and precast column are connected.

After the precast beam and the precast column are accurately positioned, an embedded part on the bottom side of the end part of the precast beam is welded with a steel plate on a bracket, and the surface of the steel plate is used as a precast beam support to ensure the position constraint reliability of the precast beam and improve the shearing resistance between the precast beam and the precast column, and the technical scheme is as follows: still be provided with local or the whole first built-in fitting that is located the bracket on the precast column body, first built-in fitting includes the steel sheet, and the steel sheet of first built-in fitting exposes on the precast beam holding surface of bracket. This scheme is when concrete implementation, with the holding surface that supports precast beam on the surface of first built-in fitting steel sheet as the bracket, set up the steel sheet of range upon range of on this steel sheet in precast beam's tip bottom side simultaneously, thus, the pressure that the concrete part received on the bracket is shared through this steel sheet, the accurate positioning of precast beam position in the direction of height is conveniently accomplished, accomplish two above-mentioned steel sheet welding backs simultaneously, can obtain the beam column assembly structure that can shear, this structure not only can serve in first connecting piece, the process of connection is accomplished to the second connecting piece, the joint strength of beam column structure can also be increased in the later stage use, promote joint strength abundance.

For the maximum joint strength of guarantee thick liquid anchor passageway grout compactness in order to promote the second connecting piece, set up to: still be provided with grout hole and air vent on the precast column body, grout hole and air vent are: the orifice at the lower end is connected with the side surface of the slurry anchor channel, and the orifice at the upper end is positioned on the side surface of the prefabricated column body;

the grouting holes and the vent holes are inclined holes with straight lines of axes. This scheme of adoption can be so that grout mouth and gas vent do not confine to the passage hole for thick liquid anchor passageway when being in milk to thick liquid anchor passageway. In specific implementation, a person skilled in the art can reasonably select the number and the arrangement positions of the grouting holes and the vent holes according to the length and the aperture of the slurry anchor channel, specific slurry and the like; the technical scheme can reduce grouting resistance and exhaust resistance, facilitate grouting implementation and improve grouting compactness. For convenient operation, set up to the drill way position that grout hole and air vent upper end are located and are distinguished from the side at thick liquid anchor passageway entrance place, specifically if: the axes of the grouting holes and the vent holes are vertical to the axis of the grout anchor channel.

As a specific implementation manner of the first connecting piece, the following steps are set: the first connecting piece comprises an embedded steel bar, one end of the embedded steel bar is embedded in the prefabricated column body, and the other end of the embedded steel bar is provided with a connecting thread used for connecting the straight thread sleeve. The scheme considers that when the straight thread sleeve is connected, the reinforcing steel bars on two sides of the straight thread sleeve move relatively in the connection process, if the mode of firstly completing the straight thread sleeve connection and then grouting to fix the reinforcing steel bars is adopted, according to the size generally adopted by the existing precast beam and the precast column, the grout anchor holes for the corresponding reinforcing steel bars of the grout anchor, which can be arranged on the precast beam, can be obviously longer than the grout anchor holes for the corresponding reinforcing steel bars of the grout anchor, which are arranged on the precast column, so that the reinforcing steel bars fixed in the precast column are arranged in a pre-embedded relation relative to the precast column, and are matched, the grout anchor holes are arranged on the precast beam, and thus the maximum connection strength obtained through the first connecting piece can be effectively guaranteed.

The first built-in fitting that above scheme provided can realize prefabricating Liang Dece and the fixed of bracket, and is more reliable, does not influence as far as possible and accomplishes first connecting piece and connect, through to prefabricating Liang Zhongduan implementation with prefabricated post welded connection to the technical scheme of prefabricated roof beam and prefabricated post relative position stability in the first connecting piece, second connecting piece connection are further improved sets up to: the bracket is matched with a second embedded part, and the second embedded part is as follows: the steel structural member is embedded in the precast column body and partially exposed to the side face of the precast column body;

the relation between any bracket and the second embedded part matched with the bracket is as follows: in each side face of the prefabricated column body in the vertical state, relative to the side face where the bracket is located, the side face where the exposed part of the second embedded part is located on the left side and/or the right side of the side face where the bracket is located; the height of the exposed portion is: the exposed part is positioned below the first connecting piece and above the second connecting piece relative to the first connecting piece and the second connecting piece which are configured for the bracket;

as a second embedded part specific implementation mode which is simple in structure and convenient to draw materials, the method is characterized in that: the exposed part is a steel plate or profile steel exposed on the side face of the prefabricated column body. In the scheme, the specific exposure position is limited to obtain a technical scheme that the connection relation formed by the second embedded parts and the precast column can be established on the side face of the precast beam, and meanwhile, the specific connection position is arranged between the upper section and the lower section of the precast beam, so that the connection is established by the second embedded parts conveniently, and meanwhile, the connection position is set to be a technical scheme which avoids interference caused by the fact that the connection is completed on the first connecting piece. This scheme sets up to the second built-in fitting including pre-buried steel structure frame in prefabricated post body inside when concrete implementation, steel structure frame is indulged the muscle with the pre-buried post in the prefabricated post body and is connected. Regarding above first built-in fitting, also set up to including the steel structure frame of pre-buried in prefabricated post body inside and bracket, steel structure frame is indulged the muscle with the pre-buried post in the prefabricated post body and is connected. In specific implementation, if the exposed part is a steel plate, angle steel is arranged on the side surface of the precast beam and is connected with the precast beam in a welding mode; and when the exposed part is the section steel and the angle steel, the side surface of the precast beam is provided with a steel plate which is connected with the precast beam in a welding way.

In the prior art, a single prefabricated column generally needs to be connected with a plurality of prefabricated beams, so a plurality of brackets are generally arranged on a prefabricated column body. For each precast beam and the precast column that make the support on the bracket all have the relation of being connected reliably, conveniently connecting, set up to: the quantity of bracket is a plurality of, and each bracket all disposes and indulges muscle connecting piece and second built-in fitting, all pre-buried on each bracket have the steel sheet on providing the precast beam holding surface.

The scheme also discloses a prefabricated reinforced concrete beam column structure convenient to hoist, which comprises a prefabricated beam and the prefabricated reinforced concrete column. The scheme is the specific application of the prefabricated reinforced concrete column on a prefabricated reinforced concrete beam column structure.

This scheme still discloses a prefabricated assembled reinforced concrete building of convenient hoist and mount, include as above arbitrary prefabricated assembled reinforced concrete post. The scheme is the concrete application of the prefabricated reinforced concrete column to prefabricated reinforced concrete buildings.

The utility model discloses following beneficial effect has:

the scheme is adopted, the device comprises the tensioning end, the prestressing tendon is enabled to apply prestressing force which is compressive stress to the precast column along the length direction of the precast column through the tensioning end before the precast column is turned and erected, after the precast column is hoisted, the prestressing force to the precast column is released, meanwhile, the lower end of the precast column is generally embedded into a concrete cup foundation, the upper end of the precast column is exposed, and the tensioning end is set to be connected with the upper end of the prestressing tendon in terms of operability and prestress direction control, so that in the turning and erecting process of the precast column, due to the fact that the prestressing tendon is covered in the range of the prestressing tendon used for generating the prestressing force, concrete on the precast column can be stressed, namely, the concrete is applied with compressive pre-constraint, in the erecting process of the precast column, the situation that the concrete is stressed in the erecting process can be counteracted by the reservation constraint, cracking of the precast column is avoided, after the turning and erecting process is finished, the prestressing force applied to the precast column by the prestressing tendon is removed through the tensioning end positioned on the precast column, and the prestressing tendon can be achieved: aiming at the working condition that the normally used prefabricated column is usually pressed, the prestress on the prefabricated column is released after the hoisting of the prefabricated column is completed, so that the prestress only serves the hoisting and erecting processes of the prefabricated column, and the stress of the prefabricated column in the use process can be prevented from being deteriorated by the prestress after the prestress is released. According to the technical scheme, the length of the prefabricated column is set to be longer, and the influence of the hoisting and mounting process on the mechanical property of the prefabricated column can be reduced.

The prefabricated reinforced concrete beam column structure and the prefabricated reinforced concrete building are all specific applications comprising the prefabricated reinforced concrete column.

Drawings

FIG. 1 is a side view of one embodiment of a prefabricated reinforced concrete column that is convenient to hoist according to the present disclosure;

fig. 2 is a side view of a concrete embodiment of the prefabricated reinforced concrete column convenient for hoisting according to the present scheme, compared with the embodiment provided in fig. 1, the embodiment has corbels arranged on each side of the prefabricated column body, wherein the corbel facing the viewport is cut away;

FIG. 3 is a schematic perspective view of a prefabricated reinforced concrete column convenient to hoist according to the embodiment;

FIG. 4 is a perspective view of a prefabricated reinforced concrete column of the present embodiment, which is convenient for hoisting;

FIG. 5 is a perspective view of the construction of one embodiment of the prefabricated assembled reinforced concrete column for easy lifting according to the present invention, with respect to FIG. 4, FIG. 4 using end anchorage, and FIG. 5 using intermediate anchorage;

fig. 6 is a partially enlarged view of a portion a shown in fig. 4.

The reference numbers in the drawings are respectively: 1. a first connecting piece, 2, a second connecting piece, 3, a first embedded part, 4, a bracket, 5 and a prefabricated column body, 6, a second embedded part, 7, a column longitudinal rib, 8, a tensioning end, 9, a prestressed rib, 10, a embedded pipe, 11 and an anchoring end.

Detailed Description

The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:

example 1:

as shown in fig. 1 to 6, the prefabricated reinforced concrete column convenient to hoist includes a prefabricated column body 5, a prestressed tendon 9 is arranged on the prefabricated column body 5, the prestressed tendon 9 extends along the length direction of the prefabricated column body 5, the upper end of the prestressed tendon 9 is connected with a tensioning end 8 fixed on the prefabricated column body 5, the tensioning end 8 is exposed on the surface or outside of the prefabricated column body 5, and the tensioning end 8 can be adjusted to apply a compressive prestress to the prefabricated column body 5 and remove the prestress.

In the prior art, the prestressing force technology is widely applied to precast beams in the field of buildings, and the concrete principle is as follows: the method comprises the steps of tensioning a steel bar/steel cable (prestressed rib 9) in a tensioned area of the concrete by using a manual force method, utilizing the retraction force of the steel bar/steel cable to pre-press the tensioned area of the concrete to obtain the stored pre-pressure, when a precast beam bears tension generated by external load, firstly counteracting the pre-pressure in the concrete in the tensioned area according to the tension condition, and tensioning the concrete along with the increase of load, so that the cracking of the concrete can be effectively delayed or the cracking of the concrete can be avoided.

Different from the application of the prestress technology on a precast beam, the scheme provides a precast column capable of obtaining pre-pressure on the cross section, and as a person skilled in the art, the precast column body 5 is a precast column used for building engineering and used as a beam-column connecting structure component on a building.

The design concept of the scheme aims at that: in the prior art, the length of a prefabricated column adopted in an assembly type building is generally short, the length of a single prefabricated column can meet the requirement of single-layer story height support of the building, in the building assembly process, the single-layer assembly is completed and then the upper-layer assembly is carried out, so that a crane matched with the building assembly needs to be used for reducing the hoisting capacity during hoisting or replacing hoisting machinery meeting hoisting requirements in order to solve the hoisting safety problem, and the introduced problems are that the hoisting efficiency of prefabricated part parts is reduced, the hoisting safety of the prefabricated part parts is reduced and the hoisting cost of the prefabricated part parts is increased along with the increase of the single-layer building area and the increase of the height of the building body layer in the working process, particularly when the plane size of the building is large. When the prefabricated columns are arranged to be longer, for example, for a multi-storey building, the whole length of a single prefabricated column can be adopted to cover each storey of the building, so that the time-consuming problem existing in the field laminated connection of the prefabricated columns can be avoided, meanwhile, the integral prefabricated column structure is favorable for guaranteeing the building quality, in the aspect of hoisting, as the prefabricated columns are full-length supporting pieces relative to the building, the building assembly can be completed in a mode of withdrawing the crane, and thus, the problem of overlong boom in the construction process can be effectively avoided.

Meanwhile, in the prior art, the prefabricated column is generally prefabricated in a factory, and the prefabricated column generally keeps a horizontal form when prefabricated in the factory. When the precast column is transported from a factory to a storage site or an installation site, a plurality of hoisting points are generally provided in the length direction of the precast column to transfer the precast column to a transport vehicle. However, when the precast column is hoisted on the installation site, the horizontal form of the precast column needs to be converted into the vertical form, which is different from the horizontal form transfer, when the precast column is converted into the vertical form, the lower end of the precast column is supported, a specific hoisting point is generally located at the upper end of the precast column (for example, at the uppermost precast corbel 4), concrete is stressed under the self weight of the concrete, and concrete at the lower side is stressed, in the process, the non-prestressed reinforcement pre-embedded in the concrete can bear part of stress, but for the concrete at the lower side, when the length of the precast column is longer, the concrete on the precast column is very easy to crack in the overturning and erecting process of the precast column, and the mechanical property of the precast column is affected.

The scheme is adopted, the arrangement is that the tensioning end 8 is included, the prestressing tendon 9 is enabled to apply prestress which is compressive stress to the precast column along the length direction of the precast column through the tensioning end 8 before the precast column is turned and erected, after the precast column is hoisted, the prestress on the precast column is released, meanwhile, the lower end of the precast column is generally embedded into a concrete cup foundation, the upper end of the precast column is exposed, and the tensioning end 8 is arranged to be connected with the upper end of the prestressing tendon 9 in the aspect of operability and prestress direction control, so that in the turning and erecting process of the precast column, due to the fact that the prestressing tendon 9 used for generating the prestress is covered, concrete on the precast column can be stressed, namely, compressive pre-constraint is applied to the concrete, in the process of erecting the precast column, the situation that the precast column cracks of the precast column can be avoided, after the turning and erecting process is finished, the prestressing tendon 9 on the precast column can be removed through the tensioning end 8 of the precast column, and the prestressing tendon 9 on the precast column can be applied, and the application of the precast column can be realized: aiming at the working condition that the normally used prefabricated column is usually pressed, the prestress on the prefabricated column is released after the hoisting of the prefabricated column is completed, so that the prestress only serves the hoisting and erecting processes of the prefabricated column, and the stress of the prefabricated column in the use process can be prevented from being deteriorated by the prestress after the prestress is released.

As a person skilled in the art, considering the post-release of the prestressing force, the prestressing force should be a non-adhesive prestressing force, in the prestressing force loading mode, the prestressing tendons 9 can be arranged at the inner side of the precast column, and the prestressing tendons 9 can also be arranged at the outer side of the precast column, as a priority mode, considering the safety problem that the prestressing tendons 9 are exposed at the outer side of the precast column, the prestressing force is applied by: a prestressed duct is reserved in the precast column, a prestressed tendon 9 extending along the length direction of the precast column is arranged in the prestressed duct, and the prestressed tendon 9 is tensioned at a tensioning end 8 of the prestressed tendon 9 to apply prestress to the precast column. In this embodiment, the prestressed duct may be obtained by using a duct pre-embedded in the precast column, the duct is a metal corrugated pipe, and the prestressed duct uses a central hole in the precast column in consideration of distribution of the prestress in the axial direction of the precast column, so that, unlike the case where the prestressed rib 9 is disposed on the outer side of the precast column, first: under the condition that the number of the prestressed tendons 9 is small, the distribution uniformity of the prestress generated by the prefabricated column in the circumferential direction of the prefabricated column can be uniformly realized, so that each position of each side of the prefabricated column can obtain a certain and relatively uniform prestress, and the upper side and the lower side are prevented from being distinguished according to the distribution requirement of the prestress in the erecting process of the prefabricated column; secondly, in implementation, about the anchoring end 11 and the tensioning end 8 (one end is the anchoring end 11 and the other end is the tensioning end 8) of the prestressed reinforcement 9 in the prefabricated column, a plurality of anchoring plates (in the prior art, steel bar construction is also available) which are pre-embedded in the prefabricated column are arranged at the anchoring end 11 and the tensioning end 8, the anchoring plates at all ends are arranged along the length direction of the prefabricated column, and all the anchoring plates are positioned between the two ends of the prestressed reinforcement 9, so that the prestress can be uniformly covered, and the scheme also has the characteristics of convenience and rapidness in implementation and reliability in prestress loading; finally, different from the external arrangement of the prestressed tendon 9 relative to the precast column, the scheme also has the characteristic of safe implementation because the required prestress is larger and the built-in prestressed tendon 9 also has the characteristic of preventing the external force action. Preferably, it is provided that the geometric center of the anchorage plate is located at the center of the cross section of the prefabricated column or that the anchorage plate is arranged astride/centered with respect to the center of the cross section of the prefabricated column.

Example 2:

this example is further refined on the basis of example 1:

in order to realize the distribution uniformity of the prestress on the cross section of the precast column and obtain unbonded prestress, the prestressed tendon 9 stretching mode with simple structure is set as the following steps: under the condition that the prestressed tendons 9 are in a tensioning state, the tensioning sections of the prestressed tendons 9 are parallel to the axis of the precast column body 5;

the number of the prestressed tendons 9 is a plurality of, when the prestressed tendons 9 are one, the prestressed tendons 9 extend along the axis, and when the number of the prestressed tendons 9 is more than 1, the relative position of the tensioning sections on each prestressed tendon 9 is as follows: annularly distributed about the axis;

the lower extreme of prestressing tendons 9 is connected with and is located prefabricated post body 5 bottom or be located the anchor end 11 of bottom top, forms the pore of holding prestressing tendons 9 through pre-buried pipe 10 pre-buried in prefabricated post body 5 on the prefabricated post body 5, the lower extreme in pore meets with anchor end 11, and the upper end meets with stretch-draw end 8. When the scheme is specifically implemented, the specific installation occasion of the prefabricated column is considered, if the prefabricated column per se is on site in the overturning and erecting process, the side surface of the prefabricated column is allowed to be a prefabricated column supporting point (if the prefabricated column comprises a plurality of brackets 4 which are arranged at intervals along the height, the supporting point is positioned at the position of the bracket 4 at the lowest end, and the anchoring end 11 is arranged below the bracket 4 at the lowest end); when the supporting point is located at the lower end of the prefabricated column, the end anchoring is adopted to enable the prestressed tendons 9 to cover the whole length of the prefabricated column.

Example 3:

this example is further refined on the basis of example 1:

be provided with bracket 4 that is used for supporting precast beam on precast column body 5, still be provided with the muscle connecting piece of indulging that is located 4 tops of bracket on precast column body 5, it is to indulge the muscle connecting piece: the prefabricated column connecting piece is used for connecting a longitudinal rib on a prefabricated beam with a prefabricated column body 5, and comprises a first connecting piece 1 and a second connecting piece 2;

the relationship between any corbel 4 and the longitudinal bar connectors provided for that corbel 4 is: the second connecting piece 2 is positioned below the first connecting piece 1 from bottom to top along the height direction of the prefabricated column body 5;

the first connecting piece 1 is a straight thread sleeve connecting piece;

the second connecting piece 2 is a slurry anchor channel.

In the scheme, the first connecting piece 1 is used for being connected with a longitudinal rib of a prefabricated Liang Dingce, and the second connecting piece 2 is used for being connected with a longitudinal rib of a prefabricated Liang Dece. The scheme aims at the following current situations in the prior art: realize that the steel bar connection mode between prefabricated post and the precast beam has a plurality ofly, include: welded connection (generally not adopting), bolted connection, straight thread muffjoint, thick liquid anchor connection, traditional bolted connection's connection process complex operation, at precast beam and precast column centering in-process, there is reinforcing bar centering difficulty still in adopting bolted connection and straight thread muffjoint's supporting mode, take one's place the problem that increases consuming time and the degree of difficulty for the hoist and mount of precast beam, thick liquid anchor connection is easy relatively, but rigidity joint strength is generally not as much as the joint strength that straight thread bush can produce, the technical scheme who provides a not only connect conveniently, be convenient for ensure beam column structure joint strength simultaneously.

Specifically, the first connecting piece 1 is used for realizing that the steel bars between the precast columns and the precast beams are connected by the straight thread sleeves, the straight thread sleeves are connected in a mechanical connection mode which is high in connection reliability and can guarantee connection strength and connection strength margin, and meanwhile, the first connecting piece 1 is positioned above the second connecting piece 2 and is suitable for being connected with the longitudinal bars of the precast beams Liang Dingce; adopt second connecting piece 2 to accomplish being connected of precast column and precast beam, aim at considering concrete joint position, adopt one kind only need carry out simple operation at the precast beam downside, can realize the precast beam downside and indulge the technical scheme that muscle and precast column are connected.

After the precast beam and the precast column are accurately positioned, an embedded part on the bottom side of the end part of the precast beam is welded with a steel plate on the bracket 4, and the surface of the steel plate is used as a precast beam support, so that the reliability of position constraint of the precast beam is guaranteed, and the shearing resistance between the precast beam and the precast column is improved, and the technical scheme is as follows: still be provided with local or whole first built-in fitting 3 that is located on bracket 4 on the precast column body 5, first built-in fitting 3 includes the steel sheet, and the steel sheet of first built-in fitting 3 exposes on the precast beam holding surface of bracket 4. This scheme is when concrete implementation, with the supporting surface that supports precast beam on the surface of the last steel sheet of first built-in fitting 3 as bracket 4, set up the steel sheet of range upon range of on this steel sheet in the tip bottom side of precast beam simultaneously, like this, divide the pressure that the concrete part received on bracket 4 through this steel sheet, conveniently accomplish the accurate positioning of precast beam position in the direction of height, accomplish two block steel welding backs above the while, can obtain the beam column assembly structure that can shear, this structure not only can serve in first connecting piece 1, the process of connection is accomplished to second connecting piece 2, the joint strength of beam column structure can also be increased in the later stage use, promote joint strength abundance.

For the maximum joint strength that guarantees thick liquid anchor passageway grout compactness in order to promote second connecting piece 2, set up to: still be provided with grout hole and air vent on the precast column body 5, grout hole and air vent are: the orifice at the lower end is connected with the side surface of the slurry anchor channel, and the orifice at the upper end is positioned on the side surface of the prefabricated column body 5;

the grouting holes and the vent holes are inclined holes with straight lines of axes. This scheme of adoption can be so that grout mouth and gas vent do not confine to the passage hole for thick liquid anchor passageway when being in milk to thick liquid anchor passageway. In specific implementation, a person skilled in the art can reasonably select the number and the arrangement positions of the grouting holes and the vent holes according to the length, the aperture, specific slurry and the like of the slurry anchor channel; the technical scheme can reduce grouting resistance and exhaust resistance, facilitate grouting implementation and improve grouting compactness. For convenient operation, set up to the drill way position that grout hole and air vent upper end are located and are distinguished from the side at thick liquid anchor passageway entrance place, specifically if: the axes of the grouting holes and the vent holes are vertical to the axis of the grout anchor channel.

As a specific implementation manner of the first connecting piece 1, the following is set: first connecting piece 1 includes that one end is pre-buried in prefabricated post body 5, the other end is provided with the embedded reinforcing bar that is used for connecting the connecting thread of straight thread sleeve. In the scheme, when the straight thread sleeve is connected, the reinforcing steel bars on two sides of the straight thread sleeve move relatively in the connection process, if the mode of firstly completing the straight thread sleeve connection and then grouting to fix the reinforcing steel bars is adopted, according to the size generally adopted by the existing precast beam and the precast column, the grout anchor holes for the corresponding reinforcing steel bars of the grout anchor, which can be arranged on the precast beam, can be obviously longer than the grout anchor holes for the corresponding reinforcing steel bars of the grout anchor, which are arranged on the precast column, so that the reinforcing steel bars fixed in the precast column are arranged in a pre-embedded relation relative to the precast column, and are matched with each other, the grout anchor holes are arranged on the precast beam, and thus the maximum connection strength obtained through the first connecting piece 1 can be effectively ensured.

The first built-in fitting 3 that the scheme provided above can realize prefabricating Liang Dece and bracket 4's fixed, and is more reliable, does not influence as far as possible and accomplishes first connecting piece 1 and connects, through to prefabricating Liang Zhongduan implementation and prefabricated post welded connection to the technical scheme of prefabricated roof beam and prefabricated post relative position stability in the first connecting piece 1, the connection of second connecting piece 2 are crossed further improved sets up to: the bracket 4 is provided with a second embedded part 6, and the second embedded part 6 is as follows: the steel structural member is embedded in the precast column body 5 and is locally exposed on the side face of the precast column body 5;

the relation between any bracket 4 and the second embedded part 6 matched with the bracket is as follows: in each side face of the prefabricated column body 5 in the upright state, relative to the side face where the bracket 4 is located, the side face where the exposed part of the second embedded part 6 is located on the left side and/or the right side of the side face where the bracket 4 is located; the height of the exposed portion is: with respect to the first link 1 and the second link 2 provided for the corbel 4, the exposed portion is located below the first link 1 and above the second link 2;

as a second embedded part 6 embodiment of simple structure, convenient material drawing, set up as: the exposed part is a steel plate or section steel exposed on the side surface of the prefabricated column body 5. In the scheme, the specific exposure position is limited to obtain a technical scheme that the connection relation formed by the second embedded parts 6 and the precast column can be established on the side face of the precast beam, and meanwhile, the specific connection position is between the upper section and the lower section of the precast beam, so that the connection is established by the second embedded parts 6 conveniently, and meanwhile, the connection position is set to be a technical scheme which avoids interference caused by connection of the first connecting part 1. This scheme sets up to second built-in fitting 6 including pre-buried steel structure frame in prefabricated post body 5 inside when concrete implementation, steel structure frame is indulged muscle 7 with the pre-buried post in the prefabricated post body 5 and is connected. Regarding to above first built-in fitting 3, also set up to including the steel structure frame of pre-buried in prefabricated post body 5 inside and bracket 4, steel structure frame is connected with the post longitudinal reinforcement 7 of pre-buried in prefabricated post body 5. In specific implementation, if the exposed part is a steel plate, angle steel is arranged on the side surface of the precast beam and is connected with the precast beam in a welding mode; and when the exposed part is the section steel and the angle steel, the side surface of the precast beam is provided with a steel plate which is connected with the precast beam in a welding way.

In the prior art, a single precast column generally needs to be connected with a plurality of precast beams, so a plurality of brackets 4 are generally arranged on the precast column body 5. For each precast beam and the precast column that make to support on bracket 4 all have the relation of being connected reliably, conveniently to be connected, set up to: the quantity of bracket 4 is a plurality of, and each bracket 4 all disposes and indulges muscle connecting piece and second built-in fitting 6, all pre-buried steel sheet on providing precast beam holding surface on each bracket 4.

Example 4:

the embodiment provides a prefabricated reinforced concrete beam column structure convenient to hoist on the basis of embodiment 1, which comprises prefabricated beams and prefabricated reinforced concrete columns in embodiment 1. The scheme is the specific application of the prefabricated reinforced concrete column on a prefabricated reinforced concrete beam column structure.

Example 5:

this embodiment provides a prefabricated reinforced concrete building convenient to hoist based on embodiment 1, which includes prefabricated reinforced concrete columns as described in embodiment 1. The scheme is the concrete application of the prefabricated reinforced concrete column to prefabricated reinforced concrete buildings.

The foregoing is a more detailed description of the present invention, taken in conjunction with specific preferred embodiments thereof, and it is not intended that the present invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.

Claims (10)

1. Prefabricated assembled reinforced concrete post of convenient hoist and mount, including prefabricated post body (5), be provided with prestressing tendons (9) on prefabricated post body (5), prestressing tendons (9) extend along prefabricated post body (5) length direction, its characterized in that, the upper end of prestressing tendons (9) is connected with stretch-draw end (8) of being fixed in on prefabricated post body (5), stretch-draw end (8) expose in the surface or the outside of prefabricated post body (5), through adjusting stretch-draw end (8), can apply for compressive stress prestressing force and remove for prefabricated post body (5) prestressing force.

2. The prefabricated reinforced concrete column convenient to hoist as claimed in claim 1, wherein the prestressed tendon (9) is in a tensioned state, and a tensioned section of the prestressed tendon (9) is parallel to an axis of the prefabricated column body (5);

the quantity of prestressing tendons (9) is a plurality of, and when prestressing tendons (9) are one, prestressing tendons (9) are along the axis extends, and when the quantity of prestressing tendons (9) is greater than 1, the relative position of stretch-draw section is on each prestressing tendons (9): annularly distributed about the axis;

the lower extreme of prestressing tendons (9) is connected with and is located precast column body (5) bottom or is located anchor end (11) of bottom top, forms the pore that holds prestressing tendons (9) through pre-buried pipe (10) in precast column body (5) on precast column body (5), the lower extreme and the anchor end (11) of pore meet, and the upper end meets with stretch-draw end (8).

3. The prefabricated reinforced concrete column convenient to hoist and mount as claimed in claim 1, wherein the prefabricated column body (5) is provided with a bracket (4) for supporting the prefabricated beam, the prefabricated column body (5) is further provided with a longitudinal rib connecting piece located above the bracket (4), and the longitudinal rib connecting piece is: the prefabricated column connecting piece is used for connecting a longitudinal rib on a prefabricated beam with a prefabricated column body (5), and comprises a first connecting piece (1) and a second connecting piece (2);

the relation between any corbel (4) and the longitudinal bar connecting piece configured for the corbel (4) is as follows: the second connecting piece (2) is positioned below the first connecting piece (1) from bottom to top along the height direction of the prefabricated column body (5);

the first connecting piece (1) is a straight thread sleeve connecting piece;

the second connecting piece (2) is a slurry anchor channel.

4. The prefabricated reinforced concrete column convenient to hoist as claimed in claim 3, wherein the prefabricated column body (5) is further provided with a first embedded part (3) which is partially or wholly arranged on the bracket (4), the first embedded part (3) comprises a steel plate, and the steel plate of the first embedded part (3) is exposed on the supporting surface of the prefabricated beam of the bracket (4).

5. The prefabricated reinforced concrete column convenient to hoist as claimed in claim 3, wherein the prefabricated column body (5) is further provided with grouting holes and vent holes, and the grouting holes and the vent holes are: the orifice at the lower end is connected with the side surface of the slurry anchor channel, and the orifice at the upper end is positioned on the side surface of the prefabricated column body (5);

the grouting holes and the vent holes are inclined holes with straight lines of axes.

6. The prefabricated reinforced concrete column convenient to hoist as claimed in claim 3, wherein the first connecting member (1) comprises an embedded steel bar with one end embedded in the prefabricated column body (5) and the other end provided with a connecting thread for connecting a straight thread sleeve.

7. The prefabricated reinforced concrete column convenient to hoist as claimed in claim 3, wherein the bracket (4) is fitted with a second embedded part (6), and the second embedded part (6) is: the steel structural member is pre-embedded on the prefabricated column body (5) and is locally exposed on the side face of the prefabricated column body (5);

the relation between any bracket (4) and the matched second embedded part (6) is as follows: in all the side surfaces of the prefabricated column body (5) in the vertical state, relative to the side surface where the bracket (4) is located, the side surface where the exposed part of the second embedded part (6) is located on the left side and/or the right side of the side surface where the bracket (4) is located; the height of the exposed portion is: the exposed part is positioned below the first connecting piece (1) and above the second connecting piece (2) relative to the first connecting piece (1) and the second connecting piece (2) configured for the bracket (4);

the exposed part is a steel plate or section steel exposed on the side face of the prefabricated column body (5).

8. The prefabricated reinforced concrete column convenient to hoist as claimed in claim 7, wherein the number of the corbels (4) is multiple, each corbel (4) is provided with a longitudinal bar connecting piece and a second embedded piece (6), and steel plates for providing a supporting surface of a prefabricated beam are embedded in each corbel (4).

9. A prefabricated reinforced concrete beam column structure convenient for hoisting, comprising a prefabricated beam, characterized by comprising a prefabricated reinforced concrete column as claimed in any one of claims 1 to 8.

10. Prefabricated reinforced concrete building to facilitate hoisting, characterized in that it comprises prefabricated reinforced concrete columns according to any one of claims 1 to 8.

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