CN113818469B - Subway vehicle section first-stage structure capable of flexibly reserving floor high-rise building - Google Patents

Abstract

The invention provides a subway vehicle section first-stage structure capable of flexibly reserving a floor high-rise building. Including the big storehouse of vehicle section and high-rise building basis, wherein, high-rise building basis includes one period raft and a plurality of building pile foundation, the lower surface of one period raft is with a plurality of the top of building pile foundation is all connected, the top of one period raft is open entrance to a cave, the outside of entrance to a cave does the big storehouse of vehicle section, the big storehouse of vehicle section is used for depositing subway vehicle. This vehicle section first-stage structure reserves the scheme for falling to the ground structure that can adjust in a flexible way in high-rise building house type later stage, and this vehicle section first-stage structure can be under the uncertain condition of high-rise building's building house type and build the big storehouse of vehicle section, and later stage high-rise building's house type can be adjusted in a flexible way to can make the big storehouse of vehicle section and high-rise building form independent structure antidetonation computational element, and the atress system is clear and definite, and high-rise building height does not receive transform structure's restriction, can develop the building area of building and promote by a wide margin.

Description

Subway vehicle section first-stage structure capable of flexibly reserving ground high-rise buildings

Technical Field

The invention relates to the technical field of buildings, in particular to a vehicle section first-stage structure for flexibly reserving a floor high-rise building.

Background

The subway vehicle section is the location of a management center for parking, checking, preparing, applying and repairing the subway vehicles, and the floor area of the subway vehicle section is usually as large as 300-500 mu according to different use functions and scales. To save land resources, TOD (Transit Oriented Development) is the mode of Development of the public transportation Oriented type. As a land utilization mode planned from the whole situation, the method provides a novel development mode organically combining traffic construction and land utilization for city construction, and is also a construction mode which is developed rapidly and widely applied in current domestic and foreign traffic planning and construction.

The first-stage cover plate of the TOD project of the subway vehicle section is used for parking or overhauling and maintaining a subway vehicle as a functional room of a subway, and the first-stage cover plate is used for developing and building buildings such as houses, commercial office buildings, schools, parking garages and the like. Because the subway train section is generally positioned at the tail end of a subway line and is positioned at a relatively far place of a city, the construction of a subway large warehouse is about 5 to 8 years earlier than the property development on a cover plate in the first period, and a developer only enters into the property development on a vehicle section cover after the subway is operated by traffic to bring traffic benefits to the far area of the city. When the lower structure of the cover plate at the first stage is built in the early stage, the arrangement of the building on the cover plate must be considered completely, and corresponding structure reservation is made. However, the prediction of the building house type in the previous stage is often difficult to meet the market demand after years, so that the building position, the floor number and the building length and width profile are generally only guaranteed to be basically unchanged, but the building house type is required to be flexible and adjustable. At present, the structural forms of the TOD project of the vehicle section include a full conversion form (the covered building is converted by a first-stage cover plate conversion layer and does not fall to the ground at all), a partial conversion form (the covered building is partially converted by a conversion layer, and an elevator core cylinder falls to the ground), and a full-falling form (the covered building falls to the ground at all). The full conversion or partial conversion scheme has high requirements on structural seismic fortification, strict ultrainspection, limited building height and complicated stress of the conversion beam column, and has high construction cost, so that the comprehensive income of projects in partial areas is low. The existing full-landing form has high cost and low cost, but requires that the house type of the building is determined and is synchronously built with a large garage of a vehicle section to the later stage of the height of a cover plate of the large garage at the first stage, and the house type is fixed, so that the huge risk of sinking into the lost market due to the fact that the house type cannot adapt to the market change needs exists.

Therefore, a vehicle section first-stage structure for flexibly reserving the floor-type high-rise building is needed, and the defect that the building house type must be determined in the traditional floor-type high-rise building reservation scheme is overcome.

Disclosure of Invention

The invention aims to provide a vehicle section first-stage structure of a flexibly reserved floor high-rise building, which is a structure reservation scheme capable of being flexibly adjusted in the later stage of the house type of the floor high-rise building, and can be used for constructing a large vehicle section warehouse under the condition that the house type of the high-rise building is uncertain, so that the construction of the high-rise building does not influence the normal operation such as the parking, operation and maintenance of subway vehicles, the house type of the later high-rise building can be flexibly adjusted, and the large vehicle section warehouse and the high-rise building can form an independent structural anti-seismic calculation unit, so that a stress system is clear, the height of the high-rise building is not limited by a conversion structure, and the building area which can be developed and constructed is greatly increased.

In order to achieve the above purpose, the invention provides the following technical scheme:

the utility model provides a nimble vehicle section first phase structure of reserving high-rise building that falls to ground, includes the big storehouse of vehicle section and high-rise building basis, wherein, the high-rise building basis includes first phase raft and a plurality of building pile foundation, the lower surface of first phase raft and a plurality of the top of building pile foundation is all connected, the top of first phase raft is open entrance to a cave, the outside of entrance to a cave does the big storehouse of vehicle section, the big storehouse of vehicle section is used for depositing subway vehicle.

Further, in the vehicle section first-stage structure, a large garage column is vertically arranged in the large garage of the vehicle section, a large garage beam is transversely arranged and connected to the top of the large garage column, and a first-stage cover plate covers the large garage beam.

Further, in the vehicle section first-stage structure, reserved construction joint dowels are arranged on the periphery of the upper surface of the first-stage raft, the reserved construction joint dowels are arranged within a range 1.5 m-2.0 m away from the edge of the first-stage raft, one section of the reserved construction joint dowels are arranged in the first-stage raft, and the other section of the reserved construction joint dowels are reserved outside the first-stage raft; preferably, the thickness of the primary raft plate is 1 m-1.5 m.

Further, in the vehicle section first-stage structure, the upper surface of the first-stage raft is further provided with a plurality of shear piers, and the shear piers are arranged at the positions of the first-stage raft without the reserved construction joint insertion ribs.

Further, in the vehicle section first-stage structure, retaining walls are arranged on the periphery of the upper surface of the first-stage raft, the retaining walls are arranged at the edges of the first-stage raft, the thickness of each retaining wall is 300-400 mm, and the height of each retaining wall is 3-4 m.

Further, in foretell vehicle section first stage structure, the big storehouse of vehicle section still has indoor terrace, a plurality of big storehouse pile foundation and big storehouse cushion cap, the height of indoor terrace with retaining wall's highly uniform, the bottom of big storehouse post extends to the below of indoor terrace and with big storehouse cushion cap is connected, big storehouse cushion cap is by a plurality of big storehouse pile foundation supports.

Further, in the vehicle section first-stage structure, the vehicle section large warehouse is located outside two opposite side edges of the opening, the length direction of the metro vehicle is parallel to the axis of the length direction of the opening, two rows of large warehouse columns are arranged outside each side edge of the opening, the vehicle section large warehouse comprises a single-line warehouse and a double-line warehouse, the single-line warehouse, one row of large warehouse columns, two rows of large warehouse columns and one row of large warehouse columns are sequentially arranged from the opening, the tops of four rows of large warehouse columns closer to the opening are connected with one end of a metro layer cantilever beam, the other end of the metro layer cantilever beam extends towards the opening, and the upper part of the metro layer cantilever beam is covered by the first-stage cover plate; the entrance to a cave with the junction in single line storehouse is provided with back brick partition wall, the top of back brick partition wall with the subway layer cantilever beam's other end contact, preferably, subway layer cantilever beam with the height of the one end that big storehouse post is connected is 1.2m ~1.5m, subway layer cantilever beam with the height of the one end that back brick partition wall is connected is 0.8m ~1.0m.

Further, in the vehicle section first-stage structure, a temporary steel guardrail is arranged at the upper end of the first-stage cover plate close to the opening, and a circle of temporary steel guardrails is arranged around the opening.

Further, in foretell vehicle section first stage structure, the upper end of big storehouse post extends to the top of first stage apron, the upper end of big storehouse post is provided with the reservation post dowel, one section of reservation post dowel is put into in the big storehouse post, another section of reservation post dowel is in advance stay outside the big storehouse post, reserve outside the big storehouse post the reservation post dowel is provided with the column cap and protects.

Further, in the vehicle section first-stage structure, the periphery of the upper surface of the first-stage raft inclines to the center line, the gradient is 2%, a sump is arranged at the center line of the upper surface of the first-stage raft, and a water pump is arranged in the sump.

The analysis shows that the invention discloses a vehicle section first-stage structure of a flexibly reserved floor high-rise building. The vehicle section first-stage structure can enable a high-rise building to be built on the ground, the periphery of the high-rise building is completely separated from a first-stage cover plate of a vehicle section large warehouse by a seam, the structure of the vehicle section large warehouse and the high-rise building structure form two independent structural anti-seismic calculation units, a stress system is clear, the height of the high-rise building is not limited by a conversion structure, and the building area which can be developed and built is greatly improved; the method comprises the steps that a building pile foundation under a high-rise building and a raft foundation with a part of thickness (first-stage raft) are built in the same period with a vehicle section large warehouse, construction joint inserting ribs are reserved, and the rest of the raft foundation (second-stage raft) and a high-rise shear wall structure are built after a high-rise building house type is determined in the later period, so that the house type is flexible and adjustable (only the length and the width of the high-rise building outline are limited), the construction is convenient and feasible, and the defect that the high-rise building house type must be determined in the traditional floor high-rise building reservation scheme is overcome; the single-line span is arranged at the periphery of the first-stage cover plate opening, a subway layer cantilever beam structure is adopted, the foundation of the large-warehouse bearing platform is completely separated from the raft foundation (the whole of the first-stage raft and the second-stage raft), the design difficulty of uneven settlement caused by different loads is reduced, and the design controllability is improved; the construction joint dowel bars are reserved in the tensile stress area possibly appearing around the raft plate in the first period under the earthquake action, and the shear piers are reserved in the middle compression area of the raft plate in the first period, so that the stress characteristic of the raft plate in the first period is met, steel is saved, and the cost is reduced; the raft plate is reserved with a certain gradient and a water collecting pit in the first period, so that the problem of rainwater drainage is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. Wherein:

fig. 1 is a schematic structural diagram according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a transverse cross section according to an embodiment of the present invention.

Fig. 3 is a schematic top view of a first-stage raft according to an embodiment of the present invention.

Description of reference numerals: 1, a large garage of vehicle sections; 11 single line banks; 12 two-wire library; 13 large depot columns; 14 large beams; 15 first-stage cover plate; 16 indoor terraces; 17 large warehouse bearing platforms; 171 large warehouse pile foundation; 18 column heads; 19 subway layer cantilever beam; 2, high-rise building foundation; 21 first-stage raft plates; 22 building pile foundations; 23 holes; 24, reserving a construction joint dowel; 25 shearing piers; 26 a retaining wall; 27, laying a brick partition wall behind the brick; 28 temporary steel guard rails; 29 a sump; 3, shear wall contour lines; 4 subway vehicles.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the invention, and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit thereof. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.

In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are for convenience of description of the present invention only and do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "connected," "connected," and "disposed" as used herein are intended to be broadly construed, and may include, for example, fixed connections and removable connections; can be directly connected or indirectly connected through intermediate components; the connection may be a wired electrical connection, a radio electrical connection, or a wireless communication signal connection, and a person of ordinary skill in the art may understand the specific meaning of the above terms according to specific situations.

One or more examples of the invention are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the invention. As used herein, the terms "first," "second," and "third," etc. may be used interchangeably to distinguish one component from another, and are not intended to denote the position or importance of the individual components.

In the technical scheme, the vehicle section large garage 1 and the high-rise building are constructed in two stages, in the first-stage construction, the vehicle section large garage 1 and the high-rise building foundation 2 are constructed, and in the second-stage construction, the high-rise building is constructed on the high-rise building foundation 2. The embodiment of the invention is a first-stage construction scheme.

As shown in fig. 1 to 3, according to the embodiment of the present invention, there is provided a vehicle section first-stage structure of a flexible reserved floor high-rise building, comprising a large vehicle section warehouse 1 and a high-rise building foundation 2, wherein the high-rise building foundation 2 comprises a first-stage raft 21 and a plurality of building pile foundations 22, the building pile foundations 22 are cast-in piles, the lower surface of the first-stage raft 21 is connected with the top ends of the plurality of building pile foundations 22, and an open hole 23 is arranged above the first-stage raft 21 (the position closer to the hole 23 is referred to as inner in the following, and the position farther from the hole 23 is referred to as outer in the following). The outside of the opening 23 is the large garage 1, and in one embodiment of the present invention, the large garage 1 is located on both sides of the opening 23. According to the subway parking function, the layer height of the large vehicle section warehouse 1 is about 9m, and the large vehicle section warehouse 1 is used for storing the subway vehicles 4 or overhauling and maintaining the subway vehicles 4 to serve as a functional room of the subway. In the subsequent construction, after the shear wall type of the high-rise building is determined, firstly, constructing a second-stage raft on the first-stage raft 21 along with the shear wall, using the second-stage raft, the first-stage raft 21 and a plurality of building pile foundations 22 as the foundation of the high-rise building, and then constructing the high-rise building on the shear wall.

Further, as shown in fig. 1, a plurality of vertically arranged large garage columns 13 are arranged in the vehicle section large garage 1, two rows of large garage columns 13 are arranged on the outer side of each side edge of the opening 23, the two rows of large garage columns 13 are arranged in a matrix manner, so that two circles of large garage columns 13 are formed around the opening 23, the tops of two corresponding large garage columns 13 in the two rows of large garage columns 13 are connected with a horizontally arranged large garage beam 14, the large garage columns 13 can provide stable support for the large garage beam 14, and a primary cover plate 15 covers the large garage beam 14. The first-stage cover plate 15 around the opening 23 has a one-span range (the number of spans is mainly the number of beam supports, one span is between every two supports, and two spans are between three supports in the embodiment of the invention, the distance between two large warehouse columns 13 for supporting the large warehouse beams 14 is one span) to reserve a construction lane and a tower crane load, so that high-rise buildings can be constructed at the later stage conveniently. The size of the opening 23 above the first-stage raft 21 of the high-rise building foundation 2 is determined according to the planned contour of the high-rise building, the opening is generally 16-18 m wide and 30-65 m long, the opening 23 is 0.8-1.2 m wider than the periphery of the contour of the high-rise building to serve as a construction space, namely, in the construction of the later-stage high-rise building, the distance between the shear wall contour line 3 of the high-rise building and the rear brick partition wall 27 is 0.8-1.2 m, and a gap exists between the high-rise building and the vehicle section large warehouse 1. The high-rise building is built on the ground, the seams are arranged between the periphery of the high-rise building and the first-stage cover plate 15 of the vehicle section large warehouse 1 and are completely separated, the structure of the vehicle section large warehouse 1 and the high-rise building structure form two independent structural anti-seismic calculation units, the stress system is clear, the height of the high-rise building is not limited by a conversion structure, and the building area which can be developed and built is greatly improved.

Further, as shown in fig. 3, a plurality of reserved construction joint dowels 24 are arranged on the periphery of the upper surface of the first-stage raft 21, the plurality of reserved construction joint dowels 24 are all vertically arranged, and the reserved construction joint dowels 24 are arranged in a plurality of circles within a range of 1.5m to 2.0m from the edge of the first-stage raft 21 (the distance between the reserved construction joint dowels 24 and the edge of the first-stage raft 21 is determined according to a tension area of the first-stage raft 21 during the next earthquake and is usually not more than 15% of the side length of the first-stage raft 21). Preferably, the reserved construction joint dowel bar 24 is made of HRB400 steel bars and has the specification of d16@450x450. One section of the reserved construction joint dowel bars 24 is placed in the first-stage raft 21, the other section of the reserved construction joint dowel bars 24 is reserved outside the first-stage raft 21, and the other section of the reserved construction joint dowel bars 24 reserved outside the first-stage raft 21 is used for extending into a second-stage raft constructed in the second-stage construction, so that the first-stage raft 21 and the second-stage raft constructed successively form a whole to serve as a foundation of a high-rise building, and horizontal shearing force between the first-stage raft 21 and the second-stage raft and tension force possibly occurring under earthquake working conditions are transmitted. The first-stage raft 21 and the second-stage raft which are used as the foundation of the high-rise building are constructed in two stages, so that the vertical steel bars of the shear wall of the high-rise building are anchored in the second-stage raft conveniently, post-planting of the steel bars is avoided, and the construction of the shear wall in the second-stage construction is facilitated. Because the second-stage raft plate and the shear wall of the high-rise building are constructed together, the house type of the high-rise building is flexible and adjustable (only the length and the width of the building outline are limited), the construction is convenient and feasible, and the defect that the building house type must be determined in the traditional floor high-rise building reservation scheme is overcome.

Preferably, the thickness of the first-stage raft 21 is 1m to 1.5m, and in the second-stage construction, the thickness of the second-stage raft is 1m to 1.5m, and the length of the reserved construction joint dowel bar 24 extending into the first-stage raft 21 and the length of the reserved construction joint dowel bar 24 reserved outside the first-stage raft 21 are both about 0.5 m. The thickness of the raft foundation (the whole of the first-stage raft 21 and the second-stage raft) is 2 m-3 m, the requirements of shearing resistance and bending resistance of high-rise punching within 100m are met, and the construction joint insertion bars 24 are reserved and inserted into the first-stage raft 21 according to the depth of 30d (namely about 0.5 m) to meet the anchoring requirements. The thickness of the second-stage raft plate is 1-1.5 m, and the thickness of the second-stage raft plate is larger than the anchoring length of the longitudinal stressed steel bars of the later-stage high-rise shear wall, so that the requirements of the national standard drawing set 16G101-1 page 58 are met. (note: the maximum diameter of the steel bars of the high-rise shear wall within 100m is not more than 25mm, the earthquake resistance grade is taken according to the strictest value, and the anchoring length 37d (0.925 m) at the first stage is less than the minimum thickness 1m of the second-stage raft.

Further, as shown in fig. 1, the upper surface of the first-stage raft 21 is further provided with a plurality of shear piers 25, the shear piers 25 are arranged at the positions of the first-stage raft 21 where no construction joint dowel bars 24 are reserved, the bottoms of the shear piers 25 are connected with the first-stage raft 21, and in the second-stage construction, the shear piers 25 extend into the second-stage raft. Preferably, the shear piers 25 and the first-stage raft 21 are integrally formed, namely the shear piers 25 are arranged in the middle pressure zone on the first-stage raft 21, the shear piers 25 are poured by plain concrete, the size of the shear piers 25 is 1m × 1m × 0.3m, the shear piers 25 are arranged in a matrix, the distance between two adjacent shear piers 25 in the same row or the same column is 2 m-3 m, the shear piers 25 are used for transmitting horizontal shear force between the first-stage raft 21 and the second-stage raft which are poured successively, the shear effect is good, and the cost is low. The construction joint dowel bars 24 are reserved in the areas where tensile stress possibly occurs around the raft 21 in the first period under the action of an earthquake, and the shear piers 25 are reserved in the middle compression area of the raft 21 in the first period, so that the stress characteristics are met, steel materials are saved, and the cost is reduced.

Furthermore, retaining walls 26 are arranged on the periphery of the upper surface of the first-stage raft 21, the retaining walls 26 are arranged at the edges of the first-stage raft 21, the thickness of the retaining walls 26 is 300-400 mm, and the height of the retaining walls 26 is 3-4 m (the vertical distance between the top of the first-stage raft 21 and the indoor terrace 16 of the large vehicle section storage 1 can effectively block the backfill soil on one side of the large vehicle section storage 1). Preferably, the outer surface of the retaining wall 26 is flush with the side surfaces of the primary rafts 21. The retaining wall 26 is used to withstand the soil pressure of the backfill in the room on the side of the large garage 1.

Further, the vehicle section large garage 1 is also provided with an indoor terrace 16 (the ground of the vehicle section large garage 1), a plurality of large garage pile foundations 171 and a large garage platform 17, the large garage pile foundations 171 are cast-in-place piles, the height of the indoor terrace 16 is consistent with that of the retaining wall 26, the bottom ends of the large garage columns 13 extend to the lower portion of the indoor terrace 16 and are connected with the large garage platform 17, the large garage platform 17 is supported by the large garage pile foundations 171 (preferably four), in one embodiment of the invention, the large garage columns 13 are provided with a plurality of large garage columns, and the four large garage pile foundations 171 provide support for one large garage column 13 through one large garage platform 17.

Further, as shown in fig. 2, the large vehicle section garage 1 is located outside two opposite side edges of the opening 23, the length direction of the metro vehicle 4 is parallel to the axis of the length direction of the opening 23, two rows of large garage columns 13 are arranged outside each side edge of the opening 23, the large vehicle section garage 1 comprises a single-line garage 11 and a double-line garage 12, the single-line garage 11, the one row of large garage columns 13, the double-line garage 12 and the one row of large garage columns 13 are sequentially arranged from the opening 23, the single-line garage 11 and the double-line garage 12 are respectively used for parking the metro vehicle 4, the tops of the four rows of large garage columns 13 closer to the opening 23 are connected with one end of a metro layer cantilever beam 19, the other end of the metro layer cantilever beam 19 extends towards the opening 23, the thickness of one end of the metro layer cantilever beam 19 close to the opening 23 is smaller than that of one end close to the large garage columns 13, and the upper portion of the metro layer cantilever beam 19 is covered by a first-stage cover plate 15. The subway layer cantilever beam 19 completely separates the foundation of the large warehouse bearing platform 17 from the high-rise building foundation 2, reduces the design difficulty of uneven settlement caused by different loads, and improves the design controllability. The junction of the cave entrance 23 and the single-line garage 11 is provided with a back brick partition wall 27, the top end of the back brick partition wall 27 is in contact with the other end of the subway layer cantilever beam 19, the inner side surface of the back brick partition wall 27 is flush with the side surface of the first-stage cover plate 15 forming the cave entrance 23, the bottom end of the back brick partition wall 27 is in contact with the retaining wall 26, the outer surface of the back brick partition wall 27 is flush with the outer surface of the retaining wall 26, the height (thickness) of one end of the subway layer cantilever beam 19 connected with the large garage column 13 is 1.2m to 1.5m, the height (thickness) of one end of the subway layer cantilever beam 19 connected with the back brick partition wall 27 is 0.8m to 1.0m, and the thickness of the back partition wall 27 is 300mm.

In one embodiment of the present invention, in the first construction, the cantilever beams 19 of the subway layer are constructed first, and then the rear brickwork partition 27 is constructed, the rear brickwork partition 27 being constructed around the retaining wall 26 from the indoor floor to under and in contact with the first cover 15. (in an embodiment of this scheme, in the second construction, carry out indoor backfill to retaining wall 26 top and form indoor ground in second raft top, indoor ground flushes with the indoor terrace 16 of the big storehouse of vehicle section 1), back brick partition wall 27 blocks entrance to a cave 23 all around, back brick partition wall 27 only bears its self weight, the weight of building above back brick partition wall 27 is undertaken by subway layer cantilever beam 19, the top of back brick partition wall 27 and subway layer cantilever beam 19 contact, prevent that back brick partition wall 27 from toppling about, back brick partition wall 27 regards as the building fire prevention divider wall, simultaneously do the fender of later stage construction concurrently, guarantee that later stage entrance to a cave 23 internal construction does not influence the normal operation of subway.

Further, as shown in fig. 1, a temporary steel fence 28 is provided at the upper end of the primary cover plate 15 near the hole 23, and the temporary steel fence 28 is provided in a circle around the hole 23. The height of interim steel guardrail 28 is about 1.1m, sets up interim steel guardrail 28 on 23 peripheral first-stage apron 15 in the entrance to a cave, prevents that the people from falling, improves the security.

Further, the upper end of the large warehouse column 13 extends to the upper side of the first-stage cover plate 15, a reserved column dowel is arranged at the upper end of the large warehouse column 13, one section of the reserved column dowel is placed in the large warehouse column 13, the other section of the reserved column dowel is reserved outside the large warehouse column 13, and the reserved column dowel reserved outside the large warehouse column 13 is provided with a column head 18 for protection.

Further, the periphery of the upper surface of the first-stage raft 21 inclines towards the center line, namely, the center of the upper surface of the first-stage raft 21 has a slope to the edge, the height of the edge of the upper surface of the first-stage raft 21 is higher than the height of the center line of the upper surface of the first-stage raft 21, the slope is 2%, a water collecting pit 29 is arranged at the center line, a water pump is arranged in the water collecting pit 29, at least one water collecting pit 29 is arranged on the center line of the first-stage raft 21, the size and the number of the water collecting pits 29 are determined according to the rainfall of the city where the water collecting pit 29 is located, and the water collecting pit 29 is used for collecting rainwater and then is intensively discharged by the water pump, so that the rainwater discharge problem is solved. In the second phase of construction, the sump 29 will be filled. In one embodiment of the present invention, two sumps 29 are provided, and each sump 29 has a size of 1m (length) × 1m (width) × 0.8m (depth).

Subway layer cantilever beam 19 that the single line was striden is arranged to entrance to a cave 23 periphery, and the single line only has a subway line to be used for parking railcar 4 in striding, and railcar 4 is wide to be 3m, and the clear distance 1.5m is respectively stayed in railcar 4's both sides, and the width of back brick partition wall 27 is 0.3m, and the width of encorbelmenting that the single line was striden promptly is 6.3m, so set up and can guarantee the security. If the lower part of the subway layer cantilever beam 19 is a double-line garage, the span of the subway layer cantilever beam 19 is a double-line span, the length of the double-line span needs more than 12m, and potential safety hazards exist due to overlong length. The subway layer cantilever beam 19 is as short as possible on the premise of meeting the requirement of train parking clearance, and is safe and economical. The overhanging width of the subway layer overhanging beam 19 is 6.3m, so that the effect of separating the vehicle section large garage 1 from the building foundation 2 of the high-rise building 5 is achieved, collision is avoided, and the stress is clear. The single-line span can reduce the span of the subway layer cantilever beam 19 to about 6.3m, reduce the height of the subway layer cantilever beam 19, and simultaneously completely separate the large-bay bearing platform 17 from the first-stage raft 21 and the second-stage raft, thereby reducing the design difficulty of uneven settlement caused by different loads of the high-rise building and the large-bay vehicle section 1, and improving the design controllability.

The large vehicle section garage 1 and the high-rise building are constructed in two stages, in the first-stage construction, the large vehicle section garage 1 and the high-rise building foundation 2 are firstly constructed, a second-stage raft is constructed above the first-stage raft 21, and a shear wall of the high-rise building is constructed above the second-stage raft. The first-stage raft 21 and the second-stage raft are connected and integrated through the reserved construction joint dowel bars 24 and the shear piers 25, so that the vertical steel bars of the shear wall of the high-rise building are anchored in the second-stage raft conveniently, post-planting of the steel bars is avoided, and construction of the shear wall in second-stage construction is facilitated.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

1. the high-rise building is built on the ground, the seams are arranged between the periphery of the high-rise building and the first-stage cover plate 15 of the vehicle section large warehouse 1 and are completely separated, the structure of the vehicle section large warehouse 1 and the high-rise building structure form two independent structural anti-seismic calculation units, the stress system is clear, the height of the high-rise building is not limited by a conversion structure, and the building area which can be developed and built is greatly improved;

2. the method comprises the steps of constructing a lower building pile foundation 22 of the high-rise building and a raft foundation (first-stage raft 21) with a part of thickness in the same period as the large vehicle section reservoir 1, reserving construction joint bars 24, and constructing the rest of the raft foundation (second-stage raft) and a high-rise shear wall structure after the house type of the high-rise building is determined in the later period, wherein the house type is flexible and adjustable (only the length and the width of the outline of the high-rise building are limited), the construction is convenient and feasible, and the defect that the house type of the high-rise building must be determined in the traditional floor high-rise building reservation scheme is overcome;

3. the periphery of the opening 23 of the first-stage cover plate 15 is provided with single line spans and adopts a subway layer cantilever beam 19 structure, so that the foundation of the large warehouse bearing platform 17 is completely separated from a raft foundation (the whole of the first-stage raft 21 and the second-stage raft), the design difficulty of uneven settlement caused by different loads is reduced, and the design controllability is improved;

4. the construction joint insertion ribs 24 are reserved in the areas where tensile stress possibly occurs around the raft 21 in the first period under the action of an earthquake, and the shear piers 25 are reserved in the middle compression area of the raft 21 in the first period, so that the stress characteristic of the raft 21 in the first period is met, steel is saved, and the cost is reduced;

5. a certain gradient and a water collection pit 29 are reserved in the first-stage raft plate 21, so that the rainwater drainage problem is solved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A vehicle section first-stage structure for flexibly reserving a landing high-rise building is characterized by comprising a vehicle section large garage and a high-rise building foundation, wherein,

the high-rise building foundation comprises a first-stage raft plate and a plurality of building pile foundations, the lower surface of the first-stage raft plate is connected with the top ends of the building pile foundations, an open hole is formed above the first-stage raft plate,

the vehicle section large warehouse is arranged on the outer side of the cave opening and used for storing subway vehicles;

reserved construction joint bars are arranged on the periphery of the upper surface of the first-stage raft plate, one section of the reserved construction joint bar is arranged in the first-stage raft plate, and the other section of the reserved construction joint bar is reserved outside the first-stage raft plate;

and the other section of the reserved construction joint dowel bars, which is reserved outside the first-stage raft, is used for extending into a second-stage raft constructed in second-stage construction, so that the first-stage raft and the second-stage raft constructed successively form a whole to be used as a foundation of a high-rise building.

2. The vehicle segment primary structure according to claim 1,

the large garage is characterized in that a vertically arranged large garage column is arranged in the large garage of the vehicle section, a transversely arranged large garage beam is connected to the top of the large garage column, and a primary cover plate covers the upper part of the large garage beam.

3. The vehicle segment primary structure according to claim 1,

the reserved construction joint bars are arranged within a range of 1.5-2.0 m away from the edge of the first-stage raft plate.

4. The vehicle segment primary structure according to claim 1,

the thickness of the first-stage raft is 1m to 1.5m.

5. The vehicle segment primary structure according to claim 1,

the upper surface of the first-stage raft is also provided with a plurality of shear piers, and the shear piers are arranged at the positions of the first-stage raft without the reserved construction joint insertion ribs.

6. The vehicle segment primary structure according to claim 2,

retaining walls are arranged on the periphery of the upper surface of the first-stage raft and are arranged at the edge of the first-stage raft, the thickness of each retaining wall ranges from 300mm to 400mm, and the height of each retaining wall ranges from 3m to 4m.

7. The vehicle segment primary structure according to claim 6,

the big storehouse of vehicle section still has indoor terrace, a plurality of big storehouse pile foundation and big storehouse cushion cap, the height of indoor terrace with the highly uniform of retaining wall, the bottom of big storehouse post extends to the below of indoor terrace and with big storehouse cushion cap is connected, big storehouse cushion cap is by a plurality of big storehouse pile foundation supports.

8. The vehicle segment primary structure according to claim 2,

the vehicle section large warehouse is positioned at the outer sides of two opposite side edges of the opening, the length direction of the subway vehicle is parallel to the axial line of the length direction of the opening,

two rows of the big warehouse columns are arranged on the outer side of each side edge of the hole,

the vehicle section large garage comprises a single-line garage and a double-line garage, the single-line garage, a row of large garage columns, the double-line garage and a row of large garage columns are sequentially arranged from the opening,

the tops of four rows of the large warehouse columns closer to the cave entrance are connected with one end of a subway layer cantilever beam, the other end of the subway layer cantilever beam extends towards the cave entrance, and the upper part of the subway layer cantilever beam is covered by the first-stage cover plate;

the junction of entrance to a cave with the single line storehouse is provided with back brickwork partition wall, the top of back brickwork partition wall with the other end contact of subway layer cantilever beam.

9. The vehicle segment one-time structure according to claim 8,

the height of one end of the subway layer cantilever beam connected with the large warehouse column is 1.2-1.5 m,

the height of the end, connected with the back brick partition wall, of the subway layer cantilever beam is 0.8-1.0 m.

10. The vehicle segment one-time structure according to claim 2,

be close to the hole department the upper end of first term apron is provided with interim steel guardrail, interim steel guardrail centers on the hole sets up the round.

11. The vehicle segment primary structure according to claim 2,

the upper end of the large warehouse column extends to the upper part of the first-stage cover plate, the upper end of the large warehouse column is provided with a reserved column dowel, one section of the reserved column dowel is arranged in the large warehouse column, the other section of the reserved column dowel is reserved outside the large warehouse column,

and column heads are arranged on the reserved column studs reserved outside the large warehouse columns for protection.

12. The vehicle segment primary structure according to claim 1,

the periphery of the upper surface of first stage raft inclines to the central line, and the slope is 2%, the central line department of the upper surface of first stage raft is provided with the sump pit, be provided with the water pump in the sump pit.

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