A subway vehicle depot cover plate assembled beam-column joint structure and construction method

Abstract

The application discloses a subway vehicle depot cover plate assembly type beam column node structure and a construction method, which comprises a stand column, a longitudinal beam and a cross beam; a corbelling platform is arranged at the top end of the stand column, a pedestal and embedded connecting bolts are arranged on the corbelling platform, the pedestal is distributed on the top surface of the corbelling platform in the transverse direction, the connecting bolts are distributed on the top surface of the corbelling platform, a plurality of column bars vertically extending out of the top surface of the corbelling platform are arranged in the stand column; the longitudinal beam is provided with a lug corresponding to the pedestal on the transverse two sides, the lug is provided with a connecting hole matched with the connecting bolt at the end portion, and the longitudinal beam is provided with a beam bar horizontally extending out of the lower part of the end surface; the cross beam is also provided with a bottom bar horizontally extending out of the lower part of the end surface, and the cross beam adopts a large-span hollow box beam and can replace a traditional floor. The application can greatly reduce the number of prefabricated components and nodes and effectively improve the construction efficiency of the assembly type structure system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of subway depot construction, in particular to a subway vehicle depot cover plate assembly type beam column joint structure and construction method. BACKGROUND

[0002] With the continuous advancement of urbanization, the shortage of land within the city and the surge in the economic value of land are becoming increasingly severe. The subway depot is a place for parking, maintenance, preparation and operation of subway vehicles, and is usually dominated by industrial buildings, occupying a large area. By adding a cover plate on the upper part of the subway depot, the secondary development of subway land can be realized, which can effectively improve the utilization rate of land and has great development space and economic value.

[0003] Therefore, the cover plate is usually added by using a concrete beam column structure. In the traditional assembly type structure system, the connection of the concrete beam column joint usually has the following two methods: the prefabricated beam and column are connected by steel bars at the joint part, and then concrete is poured at the joint area to complete the connection; or, the connecting pieces are pre-buried in the beam and column, and then the connecting pieces are connected by prestress, bolts or welding, and then the connecting position is treated to complete the connection. Both of these two methods use prefabricated concrete components of conventional structures, which have a large number of components, the cover plate beam column steel bars are usually dense, there are many direct assembly longitudinal bars, the assembly efficiency is low, and the column beam joint is also difficult to position, assemble and control construction errors due to the large height-width ratio of the beam section. There are many defects in actual construction. SUMMARY

[0004] The purpose of the present application is to provide a subway vehicle depot cover plate assembly type beam column joint structure and construction method which can improve the construction efficiency and has a firm structure stress.

[0005] A subway vehicle depot cover plate assembly type beam column joint structure, comprising a stand column, a longitudinal beam and a cross beam;

[0006] The top end of the stand column is provided with a corbel platform, the corbel platform is provided with a pedestal and a pre-buried connecting bolt, the pedestal is distributed on both sides of the top surface of the corbel platform in the transverse direction, the connecting bolt is distributed on the top surface of the corbel platform, and a plurality of column bars vertically protruding from the top surface of the corbel platform are distributed in the stand column;

[0007] The longitudinal beam is provided with beam bars horizontally protruding from the lower part of the end surface;

[0008] The cross beam is a hollow box type structure, and the cross beam is provided with bottom bars horizontally protruding from the lower part of the axial end surface;

[0009] Two longitudinal beams are respectively installed on the top surface of the corbel platform along the longitudinal direction by the end, the connecting bolt is correspondingly threaded through the connecting hole and locked by the nut, the beam bar is staggered with the column bar and connected by the fixed connecting steel, and two transverse beams are respectively installed on the abutment on the transverse sides of the corbel platform by the end.

[0010] As a preferred scheme of the present application, the longitudinal beam is provided with a longitudinal steel sleeve at the end surface, and the transverse beam is provided with a transverse steel sleeve at the end surface.

[0011] As a preferred scheme of the present application, the longitudinal beam and the transverse beam are both internally provided with a prestressed steel bundle extending along the respective axial direction, the end surface of the longitudinal beam and the lug is provided with a shear key, and the end surface of the transverse beam is provided with a shear key.

[0012] As a preferred scheme of the present application, the lug is provided with a plurality of vertically embedded connecting steels, and the connecting steels are distributed in a straight line along the longitudinal direction.

[0013] As a preferred scheme of the present application, the side wall of the longitudinal beam is provided with a plurality of horizontally protruding loop steels, and each connecting steel is correspondingly threaded through one loop steel.

[0014] As a preferred scheme of the present application, the top surface of the longitudinal beam is distributedly provided with a steel cage, and the top surface of the transverse beam is distributedly provided with a steel cage.

[0015] As a preferred scheme of the present application, the side wall of the transverse beam is provided with a plurality of vertical steels distributed along the axial direction.

[0016] A subway vehicle depot cover plate assembly type beam-column joint construction method comprises the following steps:

[0017] Step one, a cast-in-place concrete column is established, a corbel platform is poured on the top of the column, column bars are pre-embedded in the column and vertically protrude from the middle of the top surface of the corbel platform, abutments are respectively poured on both sides of the top surface of the corbel platform along the transverse direction, and connecting bolts are respectively pre-embedded along the longitudinal direction on both sides of the middle line of the top surface of the corbel platform;

[0018] Step two, two prefabricated longitudinal beams are hoisted to the corbel platform of the column, the ends of the two longitudinal beams are respectively placed on both sides of the top surface of the corbel platform along the longitudinal direction, the longitudinal beams are provided with lugs corresponding to the abutments on the transverse sides, the lugs are provided with connecting holes corresponding to the connecting bolts and locked by nuts near the ends, the longitudinal beams are provided with beam bars horizontally protruding from the lower part of the end surface of the longitudinal beams and staggered with the column bars, and then the column bars and the beam bars are connected by fixed connecting steels.

[0019] Step three, hoist each two prefabricated cross beams to the pedestal of the column, the end of each cross beam rests on the pedestal of one side of the bracket platform, the cross beam is provided with a bottom bar horizontally extending from the lower part of the axial end surface of the cross beam and staggered with the column bar, and then the column bar and the bottom bar are connected by the fixed connecting steel bars;

[0020] Step four, install the torsion-resistant steel bars to connect the longitudinal beam and the cross beam, complete the binding of the column bar and the stirrup, and pour the column, the longitudinal beam and the cross beam to form a composite layer covering the column, the longitudinal beam and the cross beam.

[0021] As a preferred scheme of the present application, the longitudinal beam is provided with a longitudinal steel sleeve at the end surface to install the torsion-resistant steel bar, the cross beam is provided with a transverse steel sleeve at the end surface to install the torsion-resistant steel bar, the end surface of the longitudinal beam and the lug is provided with a shear key, the end surface of the cross beam is provided with a shear key, and the concrete enters the shear key to form when pouring the composite layer; the reinforcement cage and the steel cage are respectively laid on the longitudinal beam and the cross beam before pouring the composite layer

[0022] As a preferred scheme of the present application, the cement is laid on the bracket platform and the pedestal respectively before hoisting the longitudinal beam and the cross beam; when the fixed connecting steel bar is installed to connect the column bar and the beam bar or the bottom bar, the two ends of the fixed connecting steel bar are vertically combined with and welded to the column bar on both sides of the beam bar or the bottom bar, and the middle part of the fixed connecting steel bar is horizontally pressed to the beam bar or the bottom bar.

[0023] Compared with the prior art, the subway vehicle depot cover plate assembly type beam column joint structure and the construction method have the advantages that the overturning resistance and hoisting positioning can be effectively realized, the formwork and support are not needed, the construction method is greatly simplified, and the deficiency that the steel bars are easily collided and not easily assembled due to the dense steel bars in the beam column joint is solved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of an assembly structure of an embodiment of the present application;

[0025] Figure 2 is a schematic diagram of a structure of a column in an embodiment of the present application;

[0026] Figure 3 is a schematic diagram of a structure of a longitudinal beam in an embodiment of the present application;

[0027] Figure 4 is a schematic diagram of a structure of a cross beam in an embodiment of the present application;

[0028] Figure 5 is a schematic diagram of a local construction structure of an embodiment of the present application;

[0029] Figure 6is the assembled structure front view when the longitudinal beam is constructed in the embodiment of the present application;

[0030] Figure 7 is the assembled structure plan view when the longitudinal beam is constructed in the embodiment of the present application;

[0031] Figure 8 is the assembled structure front view when the cross beam is constructed in the embodiment of the present application;

[0032] Figure 9 is the structure front view when the superimposed layer is constructed in the embodiment of the present application. DETAILED DESCRIPTION

[0033] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0034] In the description of the present application, it should be understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" used in the present application should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the description of the present application, it should also be understood that the terms "up", "down", "left", "right", "front", "back", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the machine or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. It should be understood that the terms "first", "second" and the like are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information can also be referred to as "second" information without departing from the scope of the present application, and similarly, the "second" information can also be referred to as "first" information.

[0036] Reference Figures 1-9 , a subway vehicle depot cover plate assembled beam column node structure, comprising a stand column 1, a longitudinal beam 2 and a cross beam 3;

[0037] The top end of the column 1 is provided with a corbel platform 11 for supporting the longitudinal beam 2 and the cross beam 3, the corbel platform 11 is provided with a pedestal 12 and a pre-buried connecting bolt 13, the pedestal 12 has at least two and is distributed on both sides of the top surface of the corbel platform 11 in the transverse direction, the connecting bolt 13 has at least four and is vertically distributed in the longitudinal and transverse directions at the four corner positions of the top surface of the corbel platform 11, a plurality of column bars 14 vertically extending out of the top surface of the corbel platform 11 are arranged in the column 1;

[0038] The longitudinal beam 2 is provided with a lug 21 corresponding to the pedestal 12 on both sides in the transverse direction, so that the axial cross section of the longitudinal beam 2 is inverted T-shaped, the lug 21 is provided with a connecting hole 22 matching the connecting bolt 13 near the end, the longitudinal beam 2 is provided with a plurality of beam bars 23 horizontally extending out of the lower part of the axial end surface, preferably the beam bars 23 are arranged in alignment and horizontally arranged;

[0039] The cross beam 3 is a hollow box structure, the cross beam 3 is provided with a plurality of bottom bars 31 horizontally extending out of the lower part of the axial end surface, preferably the bottom bars 31 are arranged in alignment and horizontally arranged;

[0040] Two longitudinal beams 2 are respectively mounted on both sides of the longitudinal top surface of the corbel platform 11 through the end, the connecting bolt 13 passes through the connecting hole 22 correspondingly and is locked by a nut, the beam bars 23 are staggered with the column bars 14 and are connected by the fixed steel bars 4, at the same time, the lug 21 is close to alignment with the pedestal 12, two cross beams 3 are respectively mounted on the pedestals 12 on both sides of the corbel platform 11 in the transverse direction through the end, the bottom bars 31 are staggered with the column bars 14 and are connected by the fixed steel bars 4, the fixed steel bars 4 are at least fastened and connected with the column bars 14 and respectively press the beam bars 23 and the bottom bars 31, or the fixed steel bars 4 are fixed with the column bars 14 and respectively fixed with the beam bars 23 and the bottom bars 31, thereby in the construction process, the longitudinal beam 2 and the cross beam 3 are hoisted in a resting mode, the connecting bolt 13 passes through the connecting hole 22 and is locked by a nut, and the beam bars 23 and the bottom bars 31 are respectively fixed with the column bars 14 by the fixed steel bars 4, so as to effectively realize the anti-overturning and hoisting positioning, free from formwork and support, greatly simplify the construction method, the beam bars 23 and the bottom bars 31 are located in the lower part, which is convenient for loading the remaining steel bars, solves the problem that the steel bars are easy to collide and not easy to assemble due to the dense steel bars in the beam-column joint, in addition, the lug 21 is also convenient for installing other cross beams 3, and flexible construction of different span cross beams.

[0041] Reference Figure 3 And 4, exemplary, the longitudinal beam 2 is provided with a plurality of longitudinal steel sleeve 24 at its axial end surface, the cross beam 3 is provided with a plurality of transverse steel sleeve 32 at its axial end surface, the torsional steel is connected with the longitudinal steel sleeve 24 and the transverse steel sleeve 32 during construction, which facilitates the installation and fixation of the longitudinal beam 2 and the cross beam 3, preferably the longitudinal steel sleeve 24 is at least vertically arranged on both sides of the end surface of the longitudinal beam 2, each of which has a plurality of equidistantly distributed from top to bottom, preferably the transverse steel sleeve 32 is arranged in the same way on both sides of the end surface of the cross beam 3, each of which has a plurality of equidistantly distributed from top to bottom, which is adapted to the actual installation and connection of the steel bar.

[0042] Reference Figure 3 And 4 , exemplary, the longitudinal beam 2 and the cross beam 3 are both provided with prestressed steel 5 extending along the respective axial direction, the end surface of the longitudinal beam 2 and the lug 21 is provided with a shear key 6, the end surface of the cross beam 3 is provided with a shear key 6, the prestressed steel 5 of the longitudinal beam 2 is preferably distributed in the transverse direction and arranged in two or more rows from top to bottom, and the shear key 6 is also arranged equidistantly from top to bottom, just between the shear key 6, which is very reasonable to avoid the opening of the shear key 6 and the pouring position of the prestressed steel 5, and after pouring concrete during construction, two or more layers of connection and stress are naturally formed above and below the prestressed steel 5, thereby well consolidating the connection stability of the longitudinal beam 2 at the column-beam joint, while the cross beam 3 is a box-shaped hollow structure, the prestressed steel 5 and the transverse steel sleeve 32 are distributed on both sides of the cross beam 3 during prefabrication to combine with the concrete forming, and the shear key 6 is just located between the two sides of the end surface of the cross beam 3, the prestressed steel 5 and the shear key 6 are aligned and correspondingly arranged in two or more groups from top to bottom, thereby greatly improving the structural strength and stability of the longitudinal beam 2 and the cross beam 3, and enhancing the overall connection strength of the column-beam joint after construction.

[0043] Reference Figure 3 , exemplary, the lug 21 is provided with a plurality of vertically embedded connecting steel bars 25, which are arranged in a straight line in the longitudinal direction, and when the cross beam is installed on the lug 21, the connecting steel bars 25 can be directly connected and fastened, greatly reducing the construction difficulty and facilitating the fixation of the cross beam.

[0044] Reference Figure 3 , exemplary, the side wall of the longitudinal beam 2 is provided with a plurality of horizontally extending loop steel bars 26, each of the connecting steel bars 25 corresponds to one of the loop steel bars 26, and the loop steel bars 26 can limit and support the connecting steel bars 25, thereby further enhancing the connection stability of the lug 21 with other cross beams.

[0045] Reference Figure 3 And 4, exemplary, the top surface of the longitudinal beam 2 is distributed with a part of the exposed reinforcement cage 27 of the prefabricated concrete, the top surface of the cross beam 3 is distributed with a part of the exposed steel cage 33 of the prefabricated concrete, the reinforcement cage 27 and the steel cage 33 are both embedded stirrup weaving, the reinforcement cage 27 and the steel cage 33 are distributed with multiple rows along the axial direction of the cross beam 3, each row of reinforcement cage 27 is provided with two or more along the transverse direction of the longitudinal beam 2, each row of steel cage 33 is symmetrically or equidistantly distributed with two or more along the left and right directions of the cross beam 3, when pouring on the longitudinal beam 2 and the cross beam 3, the reinforcement cage 27 and the steel cage 33 can greatly improve the firmness and stability of the cast-in-place structure layer.

[0046] Reference Figure 4 , exemplary, a plurality of vertical steel bars 34 are arranged on the side wall of the cross beam 3 and distributed along the axial direction, the vertical steel bars 34 are in a right-angled extension shape, facilitating the connection of other structures with the steel bars, the fixed steel bar 4 is in a U shape, the two ends of the fixed steel bar 4 are respectively connected with the column bar 14, the middle part of each fixed steel bar 4 is crimped with the beam bar 23 or the bottom bar 31, the vertical steel bar 34 and the fixed steel bar 4 can also be in a frame shape, a cage shape or other structures.

[0047] Reference Figure 1 、 5 -9, exemplary, a subway vehicle depot cover plate assembly type beam column node construction method, comprising the following steps:

[0048] Step one, cast-in-place concrete column 1, pouring corbel platform 11 on the top of the column 1, the column 14 is embedded in the column 1 and vertically extends from the middle of the top surface of the corbel platform 11, pouring abutment 12 along the two sides of the top surface of the corbel platform 11, embedding connecting bolt 13 along the left and right sides of the longitudinal center line of the top surface of the corbel platform 11;

[0049] Step two, hoist each two prefabricated longitudinal beams 2 to the corbel platform 11 of the column 1, the ends of the two longitudinal beams 2 are respectively placed on the two sides of the top surface of the corbel platform 11 along the longitudinal direction, the two sides of the longitudinal beam 2 are provided with eaves 21 corresponding to the abutment 12, the eaves 21 are provided with connecting holes 22 near the ends to correspondingly match and insert the connecting bolts 13 and lock by nuts, realizing anti-overturning and connection, the longitudinal beam 2 is embedded with several beam bars 23 extending horizontally from the axial end surface of the longitudinal beam 2 and staggered with the column bars 14, then the column bars 14 and the beam bars 23 are connected by the fixed steel bar 4, forming counter pressure and further anti-overturning and fixing of the beam bars 23;

[0050] Step three, hoist each two prefabricated beams 3 to the pedestal 12 of the bracket platform 11 of one of the columns 1, the end of each of the beams 3 rests on the pedestal 12 on one side of the bracket platform 11, the beams 3 are embedded with several bottom bars 31 horizontally extending from the lower part of the axial end face of the beams 3 and staggered with the column bars 14, then the column bars 14 and the bottom bars 31 are connected by the fixed steel bars 4 respectively at the same time, the bottom bars 31 form a counter pressure to realize the fixation of the reserved column bars of the column, positioning and anti-overturning;

[0051] Step four, install the anti-torsion steel bars connecting the longitudinal beams 2 and the beams 3, and complete the binding of the column bars and the stirrups, since the longitudinal beams 2 and the beams 3 only leave the bottom steel bars, the upper column bars will not be difficult to assemble due to the dense steel bars, and the problem of easy collision of the steel bars is also avoided, the column 1, the longitudinal beam 2 and the beam 3 are poured to form the composite layer 7 covering the column 1, the longitudinal beam 2 and the beam 3, and the construction is completed, which greatly improves the construction efficiency and fully plays the advantages of prefabricated cover-up cover-down synchronous implementation to save construction period.

[0052] Reference Figure 3 And 4 , 6-9, exemplary, the longitudinal beams 2 are provided with a plurality of longitudinal steel bar sleeves 24 at the axial end faces thereof for installing anti-torsion steel bars, the beams 3 are provided with a plurality of transverse steel bar sleeves 32 at the axial end faces thereof for installing anti-torsion steel bars, when the anti-torsion steel bars are installed, the longitudinal steel bar sleeves 24 and the transverse steel bar sleeves 32 can conveniently connect the anti-torsion steel bars to the longitudinal beams 2 and the beams 3 respectively; the end faces of the longitudinal beams 2 and the lug ears 21 are provided with shear keys 6, and the end faces of the beams 3 are provided with shear keys 6, when the composite layer 7 is poured, the concrete enters the shear keys 6 to form a more firm connection with the longitudinal beams 2 and the beams 3; before pouring the composite layer 7, the reinforcement cages 27 and the steel cages 33 are respectively laid on the longitudinal beams 2 and the beams 3, and the reinforcement cages 27 and the steel cages 33 are respectively combined with the concrete to form during pouring, and the structure of the composite layer 7 is significantly consolidated by the longitudinal beams 2 and the beams 3.

[0053] Reference Figures 6-9 , exemplary, before hoisting the longitudinal beams 2 and the beams 3, 30mm high-strength non-shrinkage cement 8 is laid on the corresponding resting positions of the bracket platform 11 and the pedestal 12 respectively, which effectively prevents cracking of the resting positions caused by knocking during the resting process; when the fixed steel bars 4 are installed to connect the column bars 14 and the beam bars 23 or the bottom bars 31, the two ends of the fixed steel bars 4 are vertically combined with and welded to the column bars 14 on both sides of the beam bars 23 or the bottom bars 31, and the middle part of the fixed steel bars 4 is horizontally crimped to the beam bars 23 or the bottom bars 31, the fixed steel bars 4 are perpendicular to the beam bars 23 or the bottom bars 31 which are both arranged in a row, which is easy to construct and has strong fastening effect.

[0054] In summary, the embodiment of the present application has the following advantages:

[0055] (1) The prefabricated inverted T-shaped reinforced concrete prestressed longitudinal beam and the prefabricated box-shaped reinforced concrete prestressed transverse beam are both connected by resting, and the anti-overturning and hoisting positioning functions are realized by the anti-overturning bolts and U-shaped steel bars pre-buried on the corbel platform, so that the structure is reasonably stressed, and no support is needed, and the construction method is simple.

[0056] (2) The longitudinal and transverse beams only reserve part of the bottom external reinforcement, and the rest of the reinforcement is constructed on site through the reserved sleeve and the post-cast composite layer, which can effectively solve the problems of dense upper longitudinal reinforcement of the beam joint of the vehicle depot with the upper cover development, easy collision of reinforcement during on-site construction, simplified construction method and improved construction efficiency.

[0057] (3) By adjusting the size of the corbel platform and the pedestal of the cast-in-place column, the component assembly of beams with different span and height can be easily realized, the standardization degree of the component is improved, and the assembly efficiency is improved.

[0058] (4) By assembling the large-span prestressed prefabricated longitudinal and transverse beams, the number of assembly components with the same area can be effectively reduced, the construction efficiency is effectively improved, the advantages of simultaneous implementation of the assembly cover and the cover under the cover can be fully utilized, and the construction period is saved.

[0059] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled persons in the technical field, some improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A construction method for prefabricated beam-column joints in subway depot cover plates, characterized in that... Includes the following steps: Step 1: Cast concrete to form columns, pour corbel platforms on top of the columns, pre-embed column reinforcement in the columns and extend vertically from the middle of the top surface of the corbel platforms, pour pedestals on both sides of the top surface of the corbel platforms in the transverse direction, and pre-embed connecting bolts on both sides of the top surface of the corbel platforms in the longitudinal direction, with the bolts placed on the left and right sides along the longitudinal centerline. Step 2: Hoist the two prefabricated longitudinal beams onto the corbel platform of the column. The ends of the two longitudinal beams rest on the top surfaces of the corbel platform along the longitudinal direction. The longitudinal beams have protruding lugs on both sides of the transverse direction that correspond to the platform. The lugs have connecting holes near their ends that match the connecting bolts and are locked with nuts. The longitudinal beams are provided with beam reinforcement that extends horizontally from the lower end face of the longitudinal beams and intersects with the column reinforcement. The column reinforcement and beam reinforcement are then connected accordingly by fixing steel bars. Step 3: Hoist every two prefabricated crossbeams onto the platform of the column. The end of each crossbeam rests on the platform on one side of the corbel platform. The crossbeam is provided with bottom reinforcement bars that extend horizontally from the lower part of the axial end face of the crossbeam and intersect with the column reinforcement bars. Then, the column reinforcement bars and bottom reinforcement bars are connected simultaneously by corresponding connecting steel bars. Step 4: Install anti-torsion steel bars to connect the longitudinal and transverse beams, and complete the binding of column reinforcement and stirrups. Then, pour concrete for the columns, longitudinal beams, and transverse beams to form an overlay layer covering the columns, longitudinal beams, and transverse beams.

2. The construction method for prefabricated beam-column joints of subway depot cover plates according to claim 1, characterized in that: The longitudinal beam is provided with longitudinal steel sleeves for installing anti-torsional steel bars at its end face, and the transverse beam is provided with transverse steel sleeves for installing anti-torsional steel bars at its end face; shear keys are provided on the end faces of both the longitudinal beam and the cantilever, and shear keys are provided on the end face of the transverse beam. When the composite layer is poured, the concrete enters the shear keys to form the composite layer; before pouring the composite layer, reinforcement cages and steel cages are laid on the longitudinal beam and transverse beam respectively.

3. The construction method for prefabricated beam-column joints of subway depot cover plates according to claim 1, characterized in that: Before hoisting the longitudinal beams and the transverse beams, cement is first laid on the corbel platform and the pedestal respectively; when installing the connecting steel bars to connect the column bars and the beam bars or the bottom bars, the two ends of the connecting steel bars are vertically attached to and welded to the column bars on both sides of the beam bars or bottom bars, and the middle part of the connecting steel bars is horizontally pressed against the beam bars or bottom bars.

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