CN113026807B - Prefabricated side wall middle plate node plate and assembled underground station - Google Patents
Prefabricated side wall middle plate node plate and assembled underground station Download PDFInfo
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- CN113026807B CN113026807B CN202110316897.9A CN202110316897A CN113026807B CN 113026807 B CN113026807 B CN 113026807B CN 202110316897 A CN202110316897 A CN 202110316897A CN 113026807 B CN113026807 B CN 113026807B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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Abstract
The invention relates to a prefabricated side wall middle plate node plate which comprises a side wall plate block and a middle plate block, wherein the middle plate block is vertically connected to the wall surface of the side wall plate block, the side wall plate block and the middle plate block are integrally prefabricated and formed, the transverse free end of the middle plate block is provided with a middle plate connecting structure for connecting with an external middle plate segment, and the top end and the bottom end of the side wall plate block are respectively provided with a side wall connecting structure for connecting with an external side wall segment or a station structural plate. In addition, the prefabricated side wall middle plate node plate is adopted in the assembled underground station. According to the invention, the side wall plate and the middle plate are integrally prefabricated and formed, and then the side wall plate is connected with the adjacent peripheral side wall section and the peripheral middle plate section, so that the assembly construction of the underground station, in particular the assembly construction of the middle plate of the station, can be realized, the strength and construction quality of the connecting node between the middle plate of the station and the side wall of the station can be effectively improved, and the engineering quality and operation safety of the assembled underground station can be ensured.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, in particular relates to the technical field of underground station construction, and particularly relates to a prefabricated side wall middle plate node plate and an assembled underground station adopting the prefabricated side wall middle plate node plate.
Background
The underground station is constructed by adopting cast-in-situ reinforced concrete, the construction operation environment is poor, the working procedure is complex, the construction period is long, the influence of various weather and climate is great, the construction quality is influenced by various factors and is difficult to guarantee, and meanwhile, a lot of waste construction wastes are generated in the construction process, so that the resources are wasted and the environment is polluted.
Along with the gradual application of the assembly construction, the assembly construction of the underground station is promoted, the construction efficiency and the construction quality of the underground station can be obviously improved, the construction operation environment of the underground station is improved, and the like. However, the existing underground station cannot realize full prefabricated assembly construction, for example, cast-in-situ construction is generally adopted for the station middle plate, and if prefabricated members are adopted for the station middle plate, the strength and construction quality of the connection node between the station middle plate and the station side wall are difficult to ensure.
Disclosure of Invention
The invention relates to a prefabricated side wall middle plate node plate and an assembled underground station adopting the prefabricated side wall middle plate node plate, which at least can solve part of defects in the prior art.
The invention relates to a prefabricated side wall middle plate node plate which comprises a side wall plate block and a middle plate block, wherein the middle plate block is vertically connected to the wall surface of the side wall plate block, the side wall plate block and the middle plate block are integrally prefabricated and formed, the transverse free end of the middle plate block is provided with a middle plate connecting structure for connecting with a peripheral middle plate segment, and the top end and the bottom end of the side wall plate block are respectively provided with a side wall connecting structure for connecting with a peripheral side wall segment or a station structural plate.
In one embodiment, the middle plate connecting structure comprises a plurality of transverse bolt sleeves pre-embedded in the transverse free end of the middle plate block, or the middle plate connecting structure comprises a transverse connecting steel plate fixed on the transverse free end of the middle plate block, and a plurality of transverse bolt through holes are formed in the transverse free end of the transverse connecting steel plate.
As one of the embodiments, when the middle plate connecting structure includes a plurality of transverse bolt sleeves, each transverse bolt sleeve is anchored by an embedded anchor bar embedded in the middle plate block.
As one of the implementation modes, when the medium plate connecting structure comprises a transverse connecting steel plate, the transverse connecting steel plate comprises a web plate, and mounting end wing plates and connecting end wing plates which are respectively connected to two transverse ends of the web plate, wherein the mounting end wing plates are buried in the transverse free ends of the medium plate block and are anchored through anchor-pulling steel bars buried in the medium plate block, and the bolt through holes are formed in the connecting end wing plates.
As one of the implementation modes, the middle plate block is internally provided with transverse steel bars, the transverse steel bars extend from the transverse free ends of the middle plate block, and the transverse steel bars are distributed on the upper side and/or the lower side of the middle plate connecting structure.
In one embodiment, the side wall connecting structure comprises a plurality of vertical bolt sleeves pre-embedded at the corresponding ends of the side wall plates, or the side wall connecting structure comprises a vertical connecting steel plate fixed at the corresponding ends of the side wall plates, and a plurality of vertical bolt through holes are formed in the vertical free ends of the vertical connecting steel plate.
As one of implementation modes, a grouting hole and a grouting channel communicated with the grouting hole are arranged in the side wall plate, the grouting hole penetrates through the bottom end of the side wall plate, and an inlet and an outlet of the grouting channel are both arranged on a station side wall surface of the side wall plate.
As one of implementation modes, the side wall plate is internally provided with vertical steel bars, and the vertical steel bars at least extend out from the top end of the side wall plate.
As one of implementation modes, brackets for installing the rail top air duct are integrally prefabricated on the station side wall surface of the side wall plate.
The invention also relates to an assembled underground station comprising:
The system comprises a station bottom plate and two groups of lower side wall structures arranged on two sides of the station bottom plate, wherein each lower side wall structure comprises a plurality of lower side wall sections which are spliced in sequence along the longitudinal direction of the station;
The system comprises a station roof and two groups of upper side wall structures arranged on two sides of the station roof, wherein each upper side wall structure comprises a plurality of upper side wall sections which are spliced in sequence along the longitudinal direction of the station;
A plurality of midplane segments;
And a plurality of prefabricated side wall middle plate node plates as described above, each of the prefabricated side wall middle plate node plates on each side being spliced in sequence along the longitudinal direction of the station; the middle plate blocks are correspondingly connected with the middle plate sections to form a station middle plate, and each side wall plate block on each side is connected with each upper side wall section and each lower side wall section on the corresponding side to form a station side wall.
The invention has at least the following beneficial effects:
According to the invention, the side wall plate and the middle plate are integrally prefabricated and formed, and then the side wall plate is connected with the adjacent peripheral side wall section and the peripheral middle plate section, so that the assembly construction of the underground station, in particular the assembly construction of the middle plate of the station, can be realized, the strength and construction quality of the connecting node between the middle plate of the station and the side wall of the station can be effectively improved, and the engineering quality and operation safety of the assembled underground station can be ensured.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an assembled underground station according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a prefabricated side wall middle plate node plate according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a connection structure between a middle plate block and a middle plate segment according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
FIG. 6 is a cross-sectional view of C-C of FIG. 3;
FIG. 7 is a sectional view of D-D of FIG. 3;
fig. 8 is a schematic diagram of a connection structure between a side wall plate and a lower side wall segment according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 and 2, an embodiment of the present invention provides a prefabricated side wall middle plate node board 1, which includes a side wall plate 11 and a middle plate 12, wherein the middle plate 12 is vertically connected to a wall surface of the side wall plate 11, the side wall plate 11 and the middle plate 12 are integrally prefabricated, a transverse free end of the middle plate 12 is provided with a middle plate connecting structure for connecting with a peripheral middle plate segment 2, and top and bottom ends of the side wall plate 11 are respectively provided with a side wall connecting structure for connecting with a peripheral side wall segment or a station structural plate.
Typically, both the side wall panels 11 and the middle panel panels 12 are reinforced concrete structures. The prefabrication process of the prefabricated side wall middle plate node plate 1 is a conventional technology, and is not described herein.
In one embodiment, as shown in fig. 1 and 2, the upper surface of the middle plate block 12 is perpendicular to the wall surface of the side wall block 11, and the junction between the lower surface of the middle plate block 12 and the side wall block 11 is chamfered, so that the structural strength of the junction between the middle plate block 12 and the side wall block 11 can be improved, and the stress performance of the middle plate block 12 can be improved. Preferably, the middle plate block 12 is located between the top and bottom ends of the side wall blocks 11, i.e. the upper plate surface of the middle plate block 12 is located below the top end of the side wall blocks 11.
Optionally, as shown in fig. 1 and fig. 2, a bracket 13 for installing a rail top air duct is integrally prefabricated on a station side wall surface of the side wall plate 11, and an air duct bottom plate of the rail top air duct can be directly supported on the bracket 13, so that the assembly construction of the rail top air duct is facilitated.
The embodiment provides a prefabricated side wall medium plate gusset plate 1, through with side wall plate 11 and the integrative prefabricated shaping of medium plate 12, rethread side wall plate 11 is connected with adjacent peripheral hardware side wall section and is connected with peripheral hardware medium plate section 2 through medium plate 12, can realize the assembled construction of underground station, especially realizes the assembled construction of station medium plate, can improve the station medium plate moreover effectively and the connected node intensity and the construction quality of station side wall, guarantees the engineering quality and the operation safety of assembled underground station.
The above-mentioned midplane board 12 is provided as part of a station midplane board to be connected to peripheral midplane segment 2. The peripheral midplane segment 2 may be a cast-in-place structure and the midplane connection structure may be a transverse rebar 74 extending beyond the transverse free end of midplane plate 12, or the like, but preferably the peripheral midplane segment 2 is also a prefabricated structure for improved efficiency of construction of the underground station.
For the connection between the midplane board block 12 and the prefabricated peripheral midplane board segment 2, tongue and groove connection structures or the like may be employed. As a preferred embodiment of the present embodiment, as shown in fig. 3 to 5, the middle plate connecting structure includes a plurality of transverse bolt sleeves 71 pre-buried in the transverse free ends of the middle plate blocks 12, or the middle plate connecting structure includes a transverse connecting steel plate 72 fixed to the transverse free ends of the middle plate blocks 12, and a plurality of transverse bolt through holes are formed in the transverse free ends of the transverse connecting steel plate 72. Specifically, when the transverse free end of the middle plate block 12 is embedded with the transverse bolt sleeve 71, the transverse connecting steel plate 72 is arranged on the peripheral middle plate segment 2, the transverse free end of the transverse connecting steel plate 72 is abutted against the transverse free end of the middle plate block 12 and makes the transverse bolt through holes of the transverse connecting steel plate opposite to the transverse bolt sleeve 71 one by one, then the transverse connecting steel plate 72 is fixedly connected with the middle plate block 12 through bolts, so that the connection between the middle plate block 12 and the peripheral middle plate segment 2 is realized, when the transverse connecting steel plate 72 is arranged on the transverse free end of the middle plate block 12, the transverse bolt sleeve 71 is embedded on the peripheral middle plate segment 2, the transverse free end of the transverse connecting steel plate 72 is abutted against the peripheral middle plate segment 2 and makes the transverse bolt through holes of the transverse connecting steel plate 72 opposite to the transverse bolt sleeve 71 one by one, and then the transverse connecting steel plate 72 is fixedly connected with the peripheral middle plate segment 2 through bolts, so that the connection between the middle plate block 12 and the peripheral middle plate segment 2 is realized.
Further preferably, as shown in fig. 3 and 5, when the middle plate connecting structure includes a plurality of transverse bolt sleeves 71, each transverse bolt sleeve 71 is anchored by an embedded anchor bar 73 embedded in the middle plate block 12, so as to ensure the embedded structural strength and the stress performance of the transverse bolt sleeve 71 in the middle plate block 12, thereby ensuring the connecting structural strength and the working reliability between the transverse bolt sleeve 71 and the transverse connecting steel plate 72 and the bolts. Likewise, the above-described anchoring structure may be employed when the transverse bolt sleeve 71 is pre-buried on the peripheral middle plate segment 2.
Further preferably, when the middle plate connecting structure includes a transverse connecting steel plate 72, the transverse connecting steel plate 72 includes a web, and a mounting end wing plate and a connecting end wing plate connected to two transverse ends of the web, respectively, wherein the mounting end wing plate is embedded in a transverse free end of the middle plate 12 and anchored by an anchoring steel bar embedded in the middle plate 12, and the bolt via hole is opened on the connecting end wing plate. The transverse connection steel plates 72 are embedded in the middle plate plates 12 when the side wall middle plate node plates 1 are prefabricated, the installation end wing plates are embedded in the middle plate plates 12, so that the binding force and the integral stress performance between the installation end wing plates and the middle plate plates 12 can be improved, and the connection end wing plates are used for abutting with the peripheral middle plate segments 2. Wherein, can set up the stiffening rib on the web, can improve structural strength and rigidity of this transverse connection steel sheet 72 to improve the atress performance of station medium plate. Likewise, when the lateral connecting steel plates 72 are mounted on the peripheral middle plate section 2, the above-described mounting structure may be employed.
The assembly structure of the transverse bolt sleeve 71, the transverse connecting steel plate 72 and the bolts is adopted, assembly construction between the side wall middle plate node plate 1 and the peripheral middle plate section 2 is facilitated under the condition of meeting the structural strength and the stress performance of the station middle plate, the bolts are screwed into the transverse bolt sleeve 71 by using operation tools such as a manipulator, the construction efficiency can be improved, and the transverse bolt through holes on the transverse connecting steel plate 72 are aligned with the transverse bolt sleeve 71, so that the alignment precision between the middle plate 12 and the peripheral middle plate section 2 can be ensured, and the construction quality is improved.
When the middle plate 12 is connected with the peripheral middle plate section 2, after the assembly structure of the transverse bolt sleeve 71, the transverse connecting steel plate 72 and the bolts is completed, concrete is cast in place at the connecting node of the middle plate 12 and the peripheral middle plate section 2, so that the upper plate surface of the station middle plate is a complete and continuous plane on one hand, the structural integrity is realized, and on the other hand, the connecting node is a steel plate-concrete node, and the structural reliability and the stress performance of the connecting node can be effectively improved. Preferably, transverse steel bars 74 are arranged in the middle plate block 12, the transverse steel bars 74 extend from the transverse free ends of the middle plate block 12, the transverse steel bars 74 are distributed on the upper side and/or the lower side of the middle plate connecting structure, when concrete is cast in place at the connecting nodes, the concrete is fixedly connected with the overhanging transverse steel bars 74 besides the transverse connecting steel plates 72, so that the binding force and the cooperative stress between the middle plate block 12 and the cast in place concrete can be improved, and as shown in fig. 4 and 5, the transverse steel bars 74 are preferably respectively extruded on the upper side and the lower side of the middle plate connecting structure.
Further, as shown in fig. 4 and 5, the peripheral middle plate section 2 is correspondingly extended with transverse steel bars 74, so that the binding force and the cooperative stress between the peripheral middle plate section 2 and the cast-in-place concrete can be improved. The transverse reinforcement 74 of the middle plate 12 is defined as a plate transverse reinforcement 74 and the transverse reinforcement 74 of the peripheral middle plate segment 2 is defined as a segment transverse reinforcement 74, wherein, preferably, the plate transverse reinforcement 74 is welded with the segment transverse reinforcement 74 at the upper side of the middle plate connecting structure, the operation is convenient, thereby ensuring the efficiency and quality of the reinforcement welding operation, especially, the side wall plate 11 and the side wall plate 11 are integrally prefabricated, the reinforcement welding operation is carried out on the middle plate 12 after the connection construction of the side wall plate 11 and the lower side wall segment 4 on the station bottom plate 3 is completed, the construction space is sufficient, and further, as shown in fig. 4 and 5, the transverse free end of the middle plate 12 adopts a step structure which is formed at the top of the middle plate 12 and is in a form of upper narrow and lower wide, the plate transverse reinforcement 74 at the top of the middle plate 12 extends from the vertical connecting surface of the step structure and has a length smaller than the width of the lower step surface, the segment transverse reinforcement 74 extends to the step structure to the position to be welded with the transverse reinforcement 74, thereby facilitating the operation, and the concrete filling the step structure is filled with concrete, the step structure is not filled, the joint performance of the middle plate 12 and the joint can be placed on the middle plate 12 and the joint between the middle plate 12 and the cast-in-place reinforcement segment 12 and the cast-on-place reinforcement can not be placed in-place, and the joint performance can be improved. The plate transverse steel bars 74 on the upper side of the middle plate connecting structure are welded with the segment transverse steel bars 74, so that the structural strength, shearing resistance and other stress performances of the joint can be ensured.
Optionally, on the underside of the midplane connection, the plate transverse rebars 74 overlap the segment transverse rebars 74 to facilitate construction operations. Further, as shown in fig. 4 and 5, the corresponding end of the above-mentioned peripheral middle plate segment 2 adopts a stepped structure formed at the bottom of the peripheral middle plate segment 2 and in the form of upper width and lower width, the segment transverse reinforcement 74 of the peripheral middle plate segment 2 extends from the vertical connection face of the stepped structure and extends to be close to the transverse free end of the middle plate block 12, and the block transverse reinforcement 74 extends to the stepped structure to overlap with the segment transverse reinforcement 74. Based on this structure, on the one hand can increase reinforcing bar overlap joint length, improve node department structural strength and operational reliability, on the other hand, when cast in situ concrete, this step structure is still filled to the concrete, not only can improve the cohesion between peripheral hardware medium plate section 2 and the cast in situ concrete, peripheral hardware medium plate section 2 has partial interlock to rest on cast in situ concrete moreover, consequently cast in situ concrete has the supporting constraint effect to peripheral hardware medium plate section 2, can improve the load bearing capacity of peripheral hardware medium plate section 2, especially in the design of the underground station that does not have the support column, enable peripheral hardware medium plate section 2 to satisfy the structure atress requirement, guarantee station operation safety.
It will be appreciated that in the longitudinal length of the underground station (i.e. in a direction parallel to the longitudinal direction of the rail), a plurality of prefabricated side wall middle plate node plates 1 are adopted on each transverse side of the station for splicing, so as to facilitate the production, transportation, storage and site construction of the prefabricated members. In the two adjacent prefabricated side wall middle plate node plates 1, the two middle plate plates 12 are spliced, and the two side wall plates 11 are spliced, wherein the splicing structure can adopt a conventional tongue-and-groove type splicing structure, and in the embodiment, the following splicing structure is preferably adopted:
taking the splicing of two adjacent middle plate plates 12 as an example, as shown in fig. 3,6 and 7, two longitudinal ends of each middle plate 12 are respectively provided with a post-pouring groove 811, when the two middle plate plates 12 are spliced, the two post-pouring grooves 811 at the splicing joint can be spliced to form a post-pouring channel 81, the post-pouring channel 81 can be a groove-type channel (the top opening is formed into a notch) or a hole-type channel, preferably, a hole-type post-pouring channel 81 is adopted, namely, the notch of the post-pouring groove 811 faces the other middle plate 12 (the upper edge and the lower edge of the notch of the post-pouring groove 811 are respectively provided with a certain distance from the upper plate surface and the lower plate surface of the middle plate 12), the upper plate surface of the middle plate 12 is correspondingly provided with a pouring opening 82 communicated with the post-pouring groove 811, concrete can be poured into the hole-pouring channel 81 through the pouring opening 82, the pouring opening 82 can be arranged on one middle plate 12, the pouring opening 82 can be arranged on the two middle plate 12, and the two pouring openings 82 at the splicing joint can be spliced to form a plurality of holes communicated with the post-pouring channel 12. It will be appreciated that for the splicing between two adjacent side wall panels 11, the pouring operation of concrete from the top end of the post-pouring channel 81 can be performed without the need for providing the pouring opening 82 described above.
The splicing structure can ensure reliable connection between adjacent plates, is convenient for construction, and ensures that the assembled underground station can meet the structural design requirement.
In particular, the post-cast channel 81 is communicated with the step structure of the transverse free end of the middle plate block 12, so that post-cast concrete at the joint point between two adjacent middle plate blocks 12 and cast-in-place concrete at the joint point between the middle plate block 12 and the peripheral middle plate segment 2 are integrated, and the structural integrity and stress performance of the station middle plate can be effectively improved.
Further, as shown in fig. 6 and 7, longitudinal steel bars 83 in middle plate block 12 may extend into post-cast channel 81 as described above to improve the bonding force between middle plate block 12 and post-cast concrete at the splice joint.
Further, when the middle plate 12 is provided with the transverse connection steel plate 72, the transverse connection steel plate 72 further comprises two splicing wing plates respectively connected to two longitudinal ends of the web, and adjacent two splicing wing plates are mutually abutted and fixedly connected into a whole through the assembly bolts at the splicing joint of the two middle plate 12. The structure can further improve the structural integrity and the cooperative stress of the middle plate of the station.
It can be appreciated that the above-mentioned splicing structure can be adopted between two adjacent peripheral middle plate segments 2, and the details are not repeated here.
Further optimizing the prefabricated side wall middle plate node plate 1, the side wall connecting structure at the bottom end of the side wall plate 11 needs to be connected with the station bottom plate 3 or the lower side wall section 4 arranged on the station bottom plate 3, and the side wall connecting structure at the top end of the side wall plate 11 needs to be connected with the station top plate 5 or the upper side wall section 6 arranged on the station top plate 5. The side wall connecting structure may refer to the middle plate connecting structure, that is, the side wall connecting structure includes a plurality of vertical bolt sleeves 91 pre-embedded at the corresponding ends of the side wall plates 11, or the side wall connecting structure includes a vertical connecting steel plate 92 fixed at the corresponding ends of the side wall plates 11, a plurality of vertical bolt through holes are provided at the vertical free ends of the vertical connecting steel plate 92, and a connection scheme between a specific side wall connecting structure and an adjacent side wall segment/station structural plate is not described herein.
The cast-in-place concrete is easy to operate differently when being connected with the middle plate block 12-the peripheral middle plate segment 2, and the cast-in-place concrete at the connecting node has certain difficulty when being connected with the side wall plate block 11-the peripheral side wall segment/the station structural plate, in the embodiment, the following preferred scheme is adopted, the cast-in-place operation of the concrete can be facilitated, and the concrete pouring quality is ensured:
As shown in fig. 8, the side wall plate 11 is provided with a grouting hole 94 and a grouting channel communicated with the grouting hole 94, the grouting hole 94 penetrates through the bottom end of the side wall plate 11, and an inlet and an outlet of the grouting channel are both arranged on a station side wall surface of the side wall plate 11. The design is suitable for completing the connection between the side wall plate 11 and the lower side wall section 4/station bottom plate 3, and concrete can enter the node between the side wall plate 11 and the lower side wall section 4/station bottom plate 3 through the grouting channel-grouting holes 94, so that the width of the upper wing plate of the vertical connecting steel plate 92 is required to be smaller than that of the side wall plate 11 so as to reserve the opening position of the grouting holes 94, or the grouting avoidance holes are correspondingly formed on the upper wing plate. The grouting holes 94 may be formed by embedding grouting sleeves 94 in the side wall blocks 11, and the grouting channels may be formed by embedding grouting pipes 95 and grouting pipes 96 in the side wall blocks 11, wherein one ends of the grouting pipes 95 are communicated with the grouting sleeves 94, and the other ends of the grouting pipes 95 penetrate through station side wall surfaces of the side wall blocks 11 to form grouting channel inlets, and one ends of the grouting pipes 96 are communicated with the grouting sleeves 94, and the other ends of the grouting pipes penetrate through station side wall surfaces of the side wall blocks 11 to form grouting channel outlets. In the scheme, part of the vertical steel bars 93 in the lower side wall section 4/station bottom plate 3 can extend into the grouting holes 94, structural strength and structural integrity of the node can be improved, further, part of the vertical steel bars 93 in the side wall plate 11 extend downwards, part of the vertical steel bars 93 in the lower side wall section 4/station bottom plate 3 extend upwards and are welded with the lower extending vertical steel bars 93 of the side wall plate 11, structural strength and structural integrity of the node can be further improved, and the steel bar welding structure is generally located on the station side of the vertical connecting steel plate 92 and is convenient to operate.
Likewise, for the connection between the side wall plate 11 and the upper side wall section 6, the grouting holes 94 and grouting channels may be formed in the upper side wall section 6, and part of the vertical steel bars 93 in the side wall plate 11 may extend from the top end of the side wall plate 11 into the grouting holes 94 in the upper side wall section 6, and the joint therebetween may obviously also adopt the above-mentioned vertical steel bar welding structure, which is not described herein.
Obviously, it is also possible to provide a grouting through hole penetrating up and down in the side wall plate 11/the upper side wall section 6 and perform grouting operation from the top end of the grouting through hole.
Example two
Referring to fig. 1, an embodiment of the present invention provides a fabricated underground station, including:
The station comprises a station bottom plate 3 and two groups of lower side wall structures arranged on two sides of the station bottom plate 3, wherein each lower side wall structure comprises a plurality of lower side wall sections 4 which are spliced in sequence along the longitudinal direction of the station;
the system comprises a station top plate 5 and two groups of upper side wall structures arranged on two sides of the station top plate 5, wherein each upper side wall structure comprises a plurality of upper side wall sections 6 which are spliced in sequence along the longitudinal direction of the station;
A plurality of midplane segments 2;
And a plurality of prefabricated side wall middle plate node plates 1 provided in the first embodiment, wherein each prefabricated side wall middle plate node plate 1 on each side is spliced in turn along the longitudinal direction of the station, each middle plate 12 is correspondingly connected with each middle plate segment 2 to form a station middle plate, and each side wall plate 11 on each side is connected with each upper side wall segment 6 and each lower side wall segment 4 on the corresponding side to form a station side wall.
The connection between the middle plate block 12 and the middle plate segment 2, and the connection between the side wall block 11 and the upper side wall segment 6 and the lower side wall segment 4 are described in the first embodiment, and are not described herein. The first embodiment is described above for the middle plate 12, the middle plate segment 2, and the side wall segment 11, and the upper side wall segment 6 and the lower side wall segment 4 are not described in detail herein, and reference is made to the scheme for the splicing between the side wall segments 11.
In particular, for the assembled underground station, after all prefabricated components are assembled, the concrete cast-in-place operation at each connecting node and each longitudinal splicing node can be synchronously completed, so that the construction period can be obviously shortened, and the structural integrity of the assembled underground station can be improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. A fabricated underground station, comprising:
The system comprises a station bottom plate and two groups of lower side wall structures arranged on two sides of the station bottom plate, wherein each lower side wall structure comprises a plurality of lower side wall sections which are spliced in sequence along the longitudinal direction of the station;
The system comprises a station roof and two groups of upper side wall structures arranged on two sides of the station roof, wherein each upper side wall structure comprises a plurality of upper side wall sections which are spliced in sequence along the longitudinal direction of the station;
A plurality of midplane segments;
The prefabricated side wall middle plate node plates comprise side wall plates and middle plate plates, wherein the middle plate plates are vertically connected to the wall surfaces of the side wall plates, the side wall plates and the middle plate plates are integrally prefabricated and formed, the transverse free ends of the middle plate plates are provided with middle plate connecting structures used for being connected with middle plate sections, and the top ends and the bottom ends of the side wall plates are respectively provided with side wall connecting structures used for being connected with side wall sections or station structural plates;
The middle plate connecting structure comprises a plurality of transverse bolt sleeves pre-embedded at the transverse free ends of the middle plate blocks, and correspondingly installs transverse connecting steel plates on the middle plate sections, or comprises transverse connecting steel plates fixed at the transverse free ends of the middle plate blocks, and correspondingly pre-embedded transverse bolt sleeves on the middle plate sections;
The two longitudinal ends of each middle plate block are respectively provided with a post-pouring groove, when the two middle plate blocks are spliced, the two post-pouring grooves at the splicing joint are spliced to form a post-pouring channel, and the post-pouring channel is communicated with a connecting joint between the middle plate block and the middle plate segment, so that post-pouring concrete at the splicing joint between two adjacent middle plate blocks and cast-in-place concrete at the connecting joint between the middle plate block and the middle plate segment are connected into a whole;
the middle plate is internally provided with plate transverse reinforcing steel bars which extend from the transverse free ends of the middle plate plates, and the middle plate sections are internally provided with section transverse reinforcing steel bars which extend from the transverse free ends of the middle plate sections;
The horizontal free end of the middle plate adopts a first step structure which is formed at the top of the middle plate and is in an upper-narrow and lower-wide form, the plate horizontal reinforcing steel bars at the top of the middle plate extend out of the vertical connecting surface of the first step structure and have a length smaller than the width of the lower step surface, the section horizontal reinforcing steel bars extend to the first step structure to be welded with the plate horizontal reinforcing steel bars, cast-in-place concrete also fills the first step structure, the corresponding end of the middle plate segment adopts a second step structure which is formed at the bottom of the middle plate segment and is in an upper-wide and lower-narrow form, the section horizontal reinforcing steel bars of the middle plate segment extend out of the vertical connecting surface of the second step structure and are close to the horizontal free end of the middle plate segment, the plate horizontal reinforcing steel bars extend to the second step structure to be lapped with the section horizontal reinforcing steel bars, and cast-in-place concrete also fills the second step structure.
2. The assembly type underground station of claim 1, wherein when the middle plate connecting structure comprises a plurality of transverse bolt sleeves, each transverse bolt sleeve is anchored by an embedded anchor bar embedded in the middle plate block.
3. The assembly type underground station of claim 1, wherein when the middle plate connecting structure comprises a transverse connecting steel plate, the transverse connecting steel plate comprises a web plate, and mounting end wing plates and connecting end wing plates which are respectively connected to two transverse ends of the web plate, wherein the mounting end wing plates are embedded in the transverse free ends of the middle plate plates and are anchored through anchor bars embedded in the middle plate plates, and the bolt through holes are formed in the connecting end wing plates.
4. The assembly type underground station of claim 1, wherein the side wall connecting structure comprises a plurality of vertical bolt sleeves pre-embedded at the corresponding ends of the side wall plates, or comprises a vertical connecting steel plate fixed at the corresponding ends of the side wall plates, and a plurality of vertical bolt through holes are formed in the vertical free ends of the vertical connecting steel plate.
5. The assembly type underground station of claim 4, wherein the side wall plate is internally provided with a grouting hole and a grouting channel communicated with the grouting hole, the grouting hole penetrates through the bottom end of the side wall plate, and an inlet and an outlet of the grouting channel are both arranged on a station side wall surface of the side wall plate.
6. The assembly type underground station of claim 4, wherein the side wall plate is internally provided with vertical steel bars, and the vertical steel bars extend out from at least the top end of the side wall plate.
7. The assembly type underground station of claim 1, wherein brackets for installing the rail top air duct are integrally prefabricated on station side wall surfaces of the side wall plates.
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| CN117107819A (en) * | 2023-09-11 | 2023-11-24 | 中铁第四勘察设计院集团有限公司 | A prefabricated underground station opening connection structure and construction method |
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| CN215442001U (en) * | 2021-03-23 | 2022-01-07 | 中铁第四勘察设计院集团有限公司 | Prefabricated side wall medium plate node plate and assembled underground station |
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| CN110453782A (en) * | 2019-07-03 | 2019-11-15 | 中建科技有限公司 | With the steel reinforced concrete beam-column connection and its construction method for weakening segment |
| CN112502186A (en) * | 2020-11-04 | 2021-03-16 | 中国铁路设计集团有限公司 | Building space structure integrated assembly type subway station structure |
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