Cover plate structure system of super high-rise building area on depot area of subway vehicle depot

Abstract

The application discloses a cover plate structure system of an upper high-rise building area of a depot area of a subway vehicle depot, which comprises a stand column, a longitudinal beam, a cross beam, a support column, a shear wall and a ring beam; the top end of the stand column is provided with a corbel platform, the corbel platform is provided with a pedestal distributed on both sides of the top surface of the platform in the transverse direction; the transverse two sides of the longitudinal beam are provided with a cantilever lug corresponding to the pedestal, the top end of the super high-rise building floor shear wall and the adjacent support column are provided with a ring beam, the side of the ring beam is provided with an outward cantilever platform, the two ends of the longitudinal beam are respectively connected with one corbel platform and one cantilever platform or the corbel platform, and the ring beam cantilever platform can support two sides of a large-span prefabricated box beam. Through the structure system, the prefabricated component standardization and the storage node requirement of the super high-rise building shear wall floor area can be realized, meanwhile, the large-span prestressed box beam is adopted, the traditional composite beam plate can be replaced, the number of prefabricated components and nodes is greatly reduced, and the construction efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of subway vehicle depot construction, and in particular to a cover plate structural system for a super-high-rise building area above a subway vehicle depot warehouse area. Background Art

[0002] The lower portion of the depot's warehouse cover serves as the maintenance and parking area for subway trains. This large area and well-organized column grid make it ideally suited for a prefabricated structural system. With the increasing demand for subway operations and maintenance, and the increasing level of superstructure development, the column spans in the depot's warehouse area are required to be larger. The super-high-rise core tube of the superstructure needs to be grounded, and simultaneous construction of the upper and lower structures is typically required. Prefabricated construction can meet this simultaneous construction requirement, improve standardization, increase assembly efficiency, and shorten construction schedules.

[0003] Prefabricated structures are concrete structures that are assembled or connected with prefabricated components as the main load-bearing components. Existing prefabricated structures mostly consist of a two-way frame structure system composed of cast-in-place or prefabricated columns, prefabricated primary and secondary beams, and composite slabs. Moreover, when it comes to shear walls, existing prefabricated structural systems are not suitable for direct beam construction and their shapes are more variable. Therefore, existing prefabricated structural systems mostly choose to cast-in-place the shear walls and their surrounding blocks as a whole, which reduces the standardization of the entire system and is not suitable for prefabricated projects that require shear walls to be grounded. Summary of the Invention

[0004] The purpose of the present invention is to provide a cover plate structure system for the super high-rise building area above the subway depot warehouse area with high standardization, no need for templates and supports, fast installation and positioning, simple construction process and high construction efficiency.

[0005] The cover structure system of the super high-rise building area above the subway depot warehouse area includes columns, longitudinal beams, transverse beams, pillars, shear walls and ring beams;

[0006] A corbel platform is provided on the top of the column, and a pedestal is provided on the corbel platform. The pedestals are distributed on both sides of the top surface of the corbel platform in the transverse direction;

[0007] The longitudinal beam is provided with protruding ears on both sides thereof corresponding to the pedestal;

[0008] The crossbeam is a hollow box structure;

[0009] A mounting groove is provided in the middle of the annular beam, and cantilevers are provided on both sides of the transverse direction and the longitudinal direction of the annular beam respectively;

[0010] One of the annular beams is installed on the top of two symmetrically distributed pillars, the ends of the shear walls are connected to the mounting grooves, the two ends of each of the longitudinal beams are respectively connected to a corbel platform and a cantilever or a corbel platform, and the two ends of each of the cross beams are respectively connected to a pedestal and a cantilever or a pedestal; the two longitudinal beams on each column are respectively installed on both sides of the top surface of the corbel platform along the longitudinal direction through their ends, and the two cross beams on each column are respectively installed on the pedestals on both sides of the corbel platform along the transverse direction through their ends.

[0011] As a preferred solution of the present invention, a groove-shaped member is further installed in the installation groove.

[0012] As a preferred embodiment of the present invention, pre-buried steel bars extend upright from the top of the pillars, and pre-buried steel bars also extend upright from the top of the shear walls. The annular beam is connected by casting the steel bars of the pillars and shear walls.

[0013] As a preferred solution of the present invention, the corbel platform is provided with embedded connecting bolts, and the connecting bolts are distributed on the top surface of the corbel platform. Several column bars vertically extending from the top surface of the corbel platform are distributed in the column, and the cantilever is provided with connecting holes matching the connecting bolts near the end. The longitudinal beam is provided with beam bars extending horizontally from the lower part of the end face, and the cross beam is provided with bottom bars extending horizontally from the lower part of its axial end face.

[0014] As a preferred solution of the present invention, the longitudinal beam is provided with a longitudinal steel sleeve at the end surface, and the cross beam is provided with a transverse steel sleeve at the end surface.

[0015] As a preferred embodiment of the present invention, the longitudinal beams and transverse beams are both built with prestressed steel strands extending along their respective axes, the end faces of the longitudinal beams and the ears are both provided with shear keys, and the end faces of the transverse beams are also provided with shear keys.

[0016] As a preferred solution of the present invention, a plurality of vertical pre-buried connecting steel bars are provided on the pick ears, and the connecting steel bars are distributed in a longitudinal direction in series.

[0017] As a preferred solution of the present invention, a plurality of horizontally extending ring-shaped steel bars are provided on the side walls of the longitudinal beam, and each of the connecting steel bars passes through one of the ring-shaped steel bars respectively.

[0018] As a preferred solution of the present invention, reinforcement cages are distributed on the top surface of the longitudinal beam, and steel cages are distributed on the top surface of the transverse beam.

[0019] As a preferred solution of the present invention, a plurality of vertical steel bars distributed along the axial direction are provided on the side wall of the crossbeam.

[0020] Compared with the prior art, the cover plate structural system of the super-high-rise building area above the subway vehicle depot warehouse area in the embodiment of the present invention has the following advantages: its entire structural system adopts a shelving connection during the construction process, has fewer components and does not require formwork and support, is quick to install and position, has a simpler construction process, and has improved efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present invention;

[0022] Figure 2 is a schematic diagram of a partial assembly structure in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the assembly structure of a beam-column node in one embodiment of the present invention;

[0024] Figure 4 This is a schematic structural diagram of a column in an embodiment of the present invention;

[0025] Figure 5 2 is a schematic structural diagram of a longitudinal beam according to an embodiment of the present invention;

[0026] Figure 6 is a schematic structural diagram of a beam in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the partial construction structure of an embodiment of the present invention;

[0028] Figure 8 This is a front view of the assembly structure during construction of the longitudinal beam in an embodiment of the present invention;

[0029] Figure 9 This is a top view of the assembly structure during construction of the longitudinal beam in an embodiment of the present invention;

[0030] Figure 10 This is a front view of the assembly structure during construction of the crossbeam in an embodiment of the present invention;

[0031] Figure 11 It is a front view of the structure during construction of the superimposed layer in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0033] In the description of the present invention, it should be understood that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" used in the present invention should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] In the description of the present invention, it should also be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the machine or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. It should be understood that the present invention uses the terms "first", "second", etc. to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0035] refer to Figure 1 and 2 The cover plate structure system of the super-high-rise building area above the subway depot warehouse area according to the embodiment of the present invention includes columns 1, longitudinal beams 2, transverse beams 3, pillars 91, shear walls 92 and annular beams 93. The columns 1, pillars 91 and shear walls 92 can be cast in situ, the longitudinal beams 2 and transverse beams 3 can be prefabricated, and the annular beam 93 can be cast in situ or prefabricated.

[0036] The top 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. There are at least two pedestals 12 distributed laterally on both sides of the top surface of the corbel platform 11.

[0037] The longitudinal beam 2 is provided with protruding ears 21 corresponding to the pedestal 12 on both sides of the lateral direction, so that the axial cross section of the longitudinal beam 2 is in an inverted T shape;

[0038] The crossbeam 3 is a hollow box-shaped structure;

[0039] A mounting groove 931 is provided in the middle of the annular beam 93, and platforms 932 for placing and connecting the longitudinal beam 2 and the transverse beam 3 are provided on both sides of the transverse and longitudinal directions of the annular beam 93;

[0040] A ring beam 93 is installed on the top of two symmetrically distributed pillars 91, the end of the shear wall 92 is connected to the mounting groove 931, the two ends of each longitudinal beam 2 are respectively placed on and connected to a corbel platform 11 and a cantilever 932 or a corbel platform 11, and the two ends of each cross beam 3 are respectively placed on and connected to a pedestal 12 and a cantilever 932 or a pedestal 12; the two longitudinal beams 2 on each column 1 are respectively installed on both sides of the top surface of the corbel platform 11 along the longitudinal direction through their ends, and the two cross beams 3 on each column 1 are respectively installed on the corbel through their ends. The platform 11 is on the pedestal 12 on both sides of the horizontal direction, and thus the large-span super-high-rise assembly structure of the subway depot warehouse area can be completed by correspondingly combining the corresponding number of various components. It adopts standardized large-span structural components to solve the span problem of components that restrict traditional assembly. The combination of the bracket platform and the ring beam 93 of cast-in-place concrete or precast concrete only requires a small amount of cast-in-place to convert the irregular area where the core tube lands into a standard frame assembly area. The entire structural system adopts a shelving connection during the construction process, with fewer components and no need for formwork and support. The installation and positioning are fast, the construction process is simpler, and the efficiency is improved.

[0041] refer to Figure 1 and 2 For example, a trough member 94 is installed in the installation groove 931 next to the shear wall 92. The trough member 94 can be directly hung on the lower side of the ring beam 93 and extend to the installation groove 931. The trough member 94 can be cast into an elevator pit or a water collection well.

[0042] refer to Figure 1 and 2 For example, pre-buried steel bars extend upright from the top of the pillar 91, and pre-buried steel bars also extend upright from the top of the shear wall 92. The annular beam 93 is connected into one piece by pouring the steel bars of the pillar 91 and the shear wall 92, and the connection is firm, and the cast-in-place part is less than that of the previous process.

[0043] refer to Figure 3-11, for example, the corbel platform 11 is provided with embedded connecting bolts 13, and the connecting bolts 13 have at least four and are vertically distributed in the longitudinal and transverse directions at the four corners of the top surface of the corbel platform 11, and the column 1 is provided with several column bars 14 vertically extending from the top surface of the corbel platform 11, and the ear 21 is provided with a connecting hole 22 near the end thereof that matches and inserts the connecting bolts 13, and the longitudinal beam 2 is provided with several beam bars 23 extending horizontally from the lower part of its axial end face, preferably the beam bars 23 are aligned and horizontally distributed, and the cross beam 3 is provided with several bottom bars 31 extending horizontally from the lower part of its axial end face, preferably the bottom bars 31 are aligned and horizontally distributed, and the connecting bolts 13 pass through the connecting holes 22 accordingly and are locked by nuts, and the beam bars 23 are staggered with the column bars 14 and connected by the fixing steel bars 4. At the same time, the ear 21 is aligned with the pedestal 12 The bottom reinforcement 31 should be nearly aligned, and the bottom reinforcement 31 is staggered with the column reinforcement 14 and connected by the connecting steel bars 4. The connecting steel bars 4 are at least tightly connected to the column reinforcement 14 and respectively compress the beam reinforcement 23 and the bottom reinforcement 31, or the connecting steel bars 4 are connected to the column reinforcement 14 while the beam reinforcement 23 and the bottom reinforcement 31 are respectively connected. Therefore, during the construction process, the longitudinal beam 2 and the cross beam 3 are hoisted in a shelving manner, and the pre-buried connecting bolts 13 are passed through the connecting holes 22 and then locked with nuts, and the connecting steel bars 4 are added to fix the beam reinforcement 23 and the bottom reinforcement 31 to the column reinforcement 14 respectively, thereby effectively achieving anti-overturning and hoisting positioning, without formwork and support, greatly simplifying the construction process, the beam reinforcement 23 and the bottom reinforcement 31 are both located in the lower position, which is convenient for the subsequent installation of the remaining steel bars during construction, solving the problem that the beam-column node is easy to collide with the steel bars and difficult to assemble due to the dense steel bars. In addition, it is very convenient to install the cross beam 3 between the cantilever 21 and the cantilever platform 932, and flexible construction of cross beam assemblies of different spans.

[0044] refer to Figure 5 and 6 , for example, the longitudinal beam 2 is provided with several longitudinal steel sleeves 24 at its axial end face, and the cross beam 3 is provided with several transverse steel sleeves 32 at its axial end face. During construction, the torsional steel bars are connected with the longitudinal steel sleeves 24 and the transverse steel sleeves 32 to facilitate the installation and fixation of the longitudinal beam 2 and the cross beam 3. Preferably, the longitudinal steel sleeves 24 are respectively provided with at least one vertical row on both sides of the end face of the longitudinal beam 2, and each row has multiple sleeves equidistantly distributed from top to bottom. Similarly, preferably, the transverse steel sleeves 32 are respectively provided with at least one vertical row on both sides of the end face of the cross beam 3, and each row has multiple sleeves equidistantly distributed from top to bottom, and are adapted according to the actual installation and connection of the installed steel bars.

[0045] refer to Figure 5 and 6, for example, the longitudinal beam 2 and the cross beam 3 are both built with prestressed steel bundles 5 extending along their respective axial directions, and the end faces of the longitudinal beam 2 and the ear 21 are provided with shear keys 6, and the end face of the cross beam 3 is provided with shear keys 6. The prestressed steel bundles 5 of the longitudinal beam 2 are preferably distributed in the transverse direction and arranged in two or more rows at intervals up and down, and the shear keys 6 are also distributed at intervals from top to bottom, just between the shear keys 6, and it is very reasonable to avoid the opening of the shear keys 6 and the casting and molding position where the prestressed steel bundles 5 are located. During the construction process, after pouring cement, the prestressed steel bundles 5 are naturally The bundle 5 forms two or more layers of connection and force above and below, thereby effectively consolidating the connection firmness of the longitudinal beam 2 at the column-beam node, and the crossbeam 3 is a box-type hollow structure. During prefabrication, the prestressed steel bundle 5 and the transverse steel sleeve 32 are distributed on both sides of the crossbeam 3 to be combined with the concrete molding, and the shear key 6 is just located between the two sides of the end face of the crossbeam 3. The prestressed steel bundle 5 and the shear key 6 are aligned and correspondingly distributed in two or more groups above and below, thereby greatly improving the structural strength and firmness of the longitudinal beam 2 and the crossbeam 3, and enhancing the overall connection strength of the column-beam node after construction.

[0046] refer to Figure 5 For example, a plurality of vertical pre-buried connecting steel bars 25 are provided on the cantilever 21, and the connecting steel bars 25 are distributed in a longitudinal straight line. When the crossbeam is installed on the cantilever 21, it can be directly connected and fastened through the connecting steel bars 25, which greatly reduces the construction difficulty and facilitates the fixation of the crossbeam.

[0047] refer to Figure 5 For example, a plurality of horizontally extending ring-shaped steel bars 26 are provided on the side walls of the longitudinal beam 2, and each of the connecting steel bars 25 passes through a corresponding ring-shaped steel bar 26. The ring-shaped steel bars 26 can limit and support the connecting steel bars 25, thereby further strengthening the connection firmness between the ear 21 and other cross beams.

[0048] refer to Figure 5 and 6 For example, the top surface of the longitudinal beam 2 is distributed with a reinforcement cage 27 partially exposed from the precast concrete, and the top surface of the cross beam 3 is distributed with a steel cage 33 partially exposed from the precast concrete. The reinforcement cage 27 and the steel cage 33 are both woven with pre-buried stirrups and internal longitudinal bars. The reinforcement cage 27 and the steel cage 33 are distributed in multiple rows along the axial direction of the cross beam 3, and two or more reinforcement cages 27 are arranged in each row along the transverse direction of the longitudinal beam 2, and two or more steel cages 33 are distributed in each row symmetrically or equidistantly along the left and right directions of the cross beam 3. After 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 structural layer.

[0049] refer to Figure 6For example, a plurality of vertical steel bars 34 distributed along the axial direction are provided on the side wall of the cross beam 3. The vertical steel bars 34 are extended at right angles to facilitate the assembly of other structures and the connection of the steel bars. The connecting steel bars 4 are U-shaped, and the two ends of the connecting steel bars 4 are respectively connected to the column bars 14. The middle part of each connecting steel bar 4 is pressed into the beam bar 23 or the bottom bar 31. The connecting steel bars 4 can also be frame-shaped, cage-shaped or other structures.

[0050] refer to Figure 2 For example, when constructing the cover structure system of the super high-rise building area on the subway depot warehouse area, the construction of the column 1, the support 91 and the shear wall 92 is completed first. After the construction of these vertical components is completed, the construction of the ring beam 93 and the channel member 94 is started. The ring beam 93 is directly cast together with the support 91 and the shear wall 92 that falls from the upper cover through their own pre-buried steel bars. The steel bars of the shear wall 92 pass through the installation groove 931 to form a reservation on the ring beam 93. The channel member 94 is cast in place or installed. It is equipped to form an elevator pit or a water collection well and is directly suspended at the bottom of the ring beam 93 to complete the casting together. After the casting of the ring beam 93 is completed, the entire frame initially forms a standardized assembled system. The prefabricated longitudinal beam 2 can be placed on the corbel platform 11 of two cast-in-place concrete columns 1 by using lifting equipment. For the upper core tube part, one end of the longitudinal beam 2 is placed on the corbel platform 11 of the column 1, and the other end is placed on the cantilever 932 of the ring beam 93. The cantilever 21 of the longitudinal beam 2 is aligned with the pedestal 12 on the corbel platform 11.

[0051] Then, you can use lifting equipment to place the two ends of the beam 3 on the pedestal 12 of the column 1, adjust the position and align it. For the upper core tube part, place one end of the pre-beam 3 on the pedestal 12 of the column 1 or the ear 21 of the longitudinal beam 2, and the other end on the platform 932 of the annular beam 93, adjust the position and align it. In the upper core tube part, the span of the beam 3 between the annular beam 93 and the column 1 or longitudinal beam 2 is shorter, and the joints of the beam 3 are closely aligned. Figure 1 shown.

[0052] Finally, concrete is poured together in the gaps, joints and top surface overlapping layers between the columns 1, longitudinal beams 2, transverse beams 3, pillars 91, shear walls 92 and annular beams 93. A tongue and groove can be directly reserved in the overlapping layer of the elevator pit or water collection well to facilitate the installation of a cover plate, and the pouring construction of the upper cover shear wall 92 is completed simultaneously. The cover shear wall 92 can be directly supported by formwork on the first-floor top plate to complete the connection of the entire structural system.

[0053] refer to Figure 3 、 7 -11, exemplary, further specific construction of the beam-column joint includes the following steps:

[0054] Step 1: Cast in-situ concrete to form a column 1, and cast a corbel platform 11 on the top of the column 1. A column reinforcement 14 is pre-embedded in the column 1 and extends vertically from the middle of the top surface of the corbel platform 11. A pedestal 12 is cast on both sides of the top surface of the corbel platform 11 in the transverse direction, and connecting bolts 13 are pre-embedded on both sides of the top surface of the corbel platform 11 in the longitudinal direction. The connecting bolts 13 are arranged on the left and right sides along the longitudinal center line.

[0055] Step 2, hoist every two prefabricated longitudinal beams 2 onto the corbel platform 11 of one of the columns 1, and the ends of the two longitudinal beams 2 are respectively placed on both sides of the top surface of the corbel platform 11 in the longitudinal direction, and the transverse sides of the longitudinal beam 2 are convexly provided with ears 21 corresponding to the pedestal 12, and the ears 21 are provided with connecting holes 22 near the ends thereof, which are matched to insert the connecting bolts 13 and are locked by nuts to achieve anti-overturning and connection. The longitudinal beam 2 is pre-embedded with several beam reinforcements 23 extending horizontally from the lower part of the axial end face of the longitudinal beam 2 and interlaced with the column reinforcement 14, and then the column reinforcement 14 and the beam reinforcement 23 are correspondingly connected at the same time by the connecting steel bar 4, so as to form counter pressure on the beam reinforcement 23 and further anti-overturning and fixation;

[0056] Step 3: hoist every two prefabricated crossbeams 3 onto the pedestal 12 of the corbel platform 11 of one column 1, with the end of each crossbeam 3 placed on the pedestal 12 on one side of the corbel platform 11. The crossbeam 3 is pre-embedded with several bottom bars 31 extending horizontally from the lower part of the axial end face of the crossbeam 3 and interlaced with the column bars 14. Then, the column bars 14 and the bottom bars 31 are connected simultaneously by the connecting steel bars 4, forming a counter-pressure effect on the bottom bars 31, thereby fixing the reserved column bars of the column, positioning and anti-overturning;

[0057] Step 4: Install torsional reinforcement to connect the longitudinal beam 2 and the transverse beam 3, and complete the binding of the column reinforcement and stirrups. Since only the protruding reinforcement at the bottom of the longitudinal beam 2 and the transverse beam 3 is left, the upper column reinforcement will not be difficult to assemble due to the dense reinforcement, and the problem of easy collision of reinforcement is avoided. The columns 1, longitudinal beams 2 and transverse beams 3 are cast to form an overlapping layer 7 covering the columns 1, longitudinal beams 2 and transverse beams 3 to complete the construction, which greatly improves the construction efficiency and gives full play to the advantage of saving construction time by implementing the assembled cover simultaneously.

[0058] refer to Figure 5 and 6, 8-11, illustratively, the longitudinal beam 2 is provided with several longitudinal steel sleeves 24 for installing torsional steel bars at its axial end face, and the crossbeam 3 is provided with several transverse steel sleeves 32 for installing torsional steel bars at its axial end face. When installing the torsional steel bars, the torsional steel bars can be conveniently connected to the longitudinal beam 2 and the crossbeam 3 accordingly through the longitudinal steel sleeves 24 and the transverse steel sleeves 32; the end faces of the longitudinal beam 2 and the ear 21 are provided with shear keys 6, and the end face of the crossbeam 3 is provided with shear keys 6. When pouring the composite layer 7, concrete enters the shear keys 6 to form, and forms a stronger connection with the longitudinal beam 2 and the crossbeam 3 accordingly; before pouring the composite layer 7, a reinforcement cage 27 and a steel cage 33 are laid on the longitudinal beam 2 and the crossbeam 3 respectively, and the poured reinforcement cage 27 and the steel cage 33 are respectively combined with the concrete to form, and the longitudinal beam 2 and the crossbeam 3 are used to significantly consolidate the structural properties of the composite layer 7.

[0059] refer to Figure 6-9 For example, before hoisting the longitudinal beam 2 and the cross beam 3, 30mm high-strength non-shrinkage cement 8 is laid at the corresponding resting positions on the corbel platform 11 and the pedestal 12 respectively, so as to effectively prevent the resting positions from being cracked due to collisions during the resting process; when installing the connecting steel bars 4 to connect the column bars 14 and the beam bars 23 or the bottom bars 31, the two ends of the connecting steel bars 4 are vertically attached to 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 connecting steel bars 4 is horizontally pressed against the beam bars 23 or the bottom bars 31, and the connecting steel bars 4 are perpendicular to the beam bars 23 or the bottom bars 31 that are arranged and distributed, which is easy to construct and has a strong fastening effect.

[0060] The structure and construction of the beam-column joint have the following advantages:

[0061] (1) Both the prefabricated inverted T-shaped reinforced concrete prestressed longitudinal beams and the prefabricated box-type reinforced concrete prestressed transverse beams are connected in a shelving manner. The anti-overturning bolts and U-shaped steel bars embedded in the corbel platform are used to achieve anti-overturning and hoisting positioning. The structure is reasonably stressed, no support is required, and the construction process is simple.

[0062] (2) For both longitudinal and transverse beams, only the bottom part of the protruding steel bars are reserved, and the remaining steel bars are constructed on-site through reserved sleeves and post-cast overlapping layers. This can effectively solve the problem that the upper longitudinal bars at the beam-column joints of the vehicle section with upper cover development are dense and difficult to assemble, and the steel bars are prone to collision during on-site construction, simplifying the construction process and improving construction efficiency.

[0063] (3) By adjusting the size of the corbel platform and pedestal of the cast-in-place column, the assembly of components with different span beam heights can be easily achieved, thereby improving the standardization of components and enhancing assembly efficiency.

[0064] (4) By assembling components with large-span prestressed prefabricated longitudinal and transverse beams, the number of assembled components of the same area can be effectively reduced, which effectively improves construction efficiency and fully utilizes the advantages of simultaneous implementation of prefabricated cover and bottom to save construction time.

[0065] In summary, the structure and construction of beam-column joints have the following advantages:

[0066] ① The longitudinal and transverse beam frame structure is adopted to ensure the overall seismic performance of the lower frame of the super-high-rise cover; the combination of column corbels and concrete ring beams can convert the irregular area where the core tube lands into a standard frame assembly area, thereby improving the degree of standardization and assembly rate.

[0067] ② All prefabricated components are prestressed components, which are suitable for large spans. Prestressed small box beams can replace structural floor slabs, reducing the number of components and improving assembly efficiency.

[0068] ③The entire structural system adopts a shelving connection, which does not require formwork and support throughout the process. The installation and positioning are fast, the construction process is simple, the construction efficiency is high, and the bottom is flat and beautiful after the construction is completed.

[0069] ④ Directly integrate the elevator pit or water collection well on the upper cover into the concrete ring beam, avoiding the problem of setting a separate tension beam on the frame, making the force form more reasonable and the construction efficiency higher.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. The cover plate structure system of the super high-rise building area above the subway depot warehouse area is characterized by: including columns, longitudinal beams, transverse beams, supports, shear walls and ring beams; A corbel platform is provided on the top of the column, and a pedestal is provided on the corbel platform. The pedestals are distributed on both sides of the top surface of the corbel platform in the transverse direction; The longitudinal beam is provided with protruding ears on both sides thereof corresponding to the pedestal; The crossbeam is a hollow box structure; A mounting groove is provided in the middle of the annular beam, and cantilevers are provided on both sides of the transverse direction and the longitudinal direction of the annular beam respectively; One of the annular beams is installed on the top of two symmetrically distributed pillars, the ends of the shear walls are connected to the mounting grooves, the two ends of each of the longitudinal beams are respectively connected to a corbel platform and a cantilever or a corbel platform, and the two ends of each of the cross beams are respectively connected to a pedestal and a cantilever or a pedestal; the two longitudinal beams on each column are respectively installed on both sides of the top surface of the corbel platform along the longitudinal direction through their ends, and the two cross beams on each column are respectively installed on the pedestals on both sides of the corbel platform along the transverse direction through their ends.

2. The cover plate structural system for the super high-rise building area above the subway depot warehouse area according to claim 1 is characterized by: A groove-shaped part is also installed in the installation groove.

3. The cover plate structural system for the super high-rise building area above the subway depot warehouse area according to claim 1 is characterized by: The top of the pillar is vertically extended with embedded steel bars, the top of the shear wall is also vertically extended with embedded steel bars, and the annular beam is connected by pouring the steel bars of the pillar and the shear wall.

4. The cover plate structural system for a super high-rise building area above a subway depot storage area according to any one of claims 1 to 3, characterized in that: The corbel platform is provided with embedded connecting bolts, and the connecting bolts are distributed on the top surface of the corbel platform. Several column bars extending vertically from the top surface of the corbel platform are distributed in the column. The ear is provided with connecting holes matching the connecting bolts near the end. The longitudinal beam is provided with beam bars extending horizontally from the lower part of the end face, and the cross beam is provided with bottom bars extending horizontally from the lower part of its axial end face.

5. The cover plate structural system for a super high-rise building area above a subway depot storage area according to any one of claims 1 to 3, characterized in that: The longitudinal beam is provided with a longitudinal steel bar sleeve at the end surface, and the cross beam is provided with a transverse steel bar sleeve at the end surface.

6. The cover plate structural system for a super high-rise building area above a subway depot storage area according to any one of claims 1 to 3, characterized in that: The longitudinal beams and the transverse beams are both built with prestressed steel strands extending along their respective axial directions. The end faces of the longitudinal beams and the ears are both provided with shear keys, and the end faces of the transverse beams are also provided with shear keys.

7. The cover plate structural system for a super high-rise building area above a subway depot storage area according to any one of claims 1 to 3, characterized in that: A plurality of vertical pre-buried connecting steel bars are provided on the pick ears, and the connecting steel bars are distributed in a longitudinal row.

8. The cover plate structural system for the super high-rise building area above the subway depot warehouse area according to claim 7 is characterized by: A plurality of horizontally extending ring-buckle steel bars are provided on the side walls of the longitudinal beam, and each of the connecting steel bars passes through a corresponding ring-buckle steel bar.

9. The cover plate structural system for a super high-rise building area above a subway depot storage area according to any one of claims 1 to 3, characterized in that: The top surface of the longitudinal beam is distributed with reinforcement cages, and the top surface of the transverse beam is distributed with steel cages.

10. The cover plate structural system for a super high-rise building area above a subway depot storage area according to any one of claims 1 to 3, characterized in that: A plurality of vertical steel bars distributed along the axial direction are arranged on the side wall of the cross beam.

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