CN215483078U - Concrete prefabricated part transverse connection node and assembled underground station - Google Patents

Concrete prefabricated part transverse connection node and assembled underground station Download PDF

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Publication number
CN215483078U
CN215483078U CN202120587759.XU CN202120587759U CN215483078U CN 215483078 U CN215483078 U CN 215483078U CN 202120587759 U CN202120587759 U CN 202120587759U CN 215483078 U CN215483078 U CN 215483078U
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transverse
plate
prefabricated
transverse connecting
concrete
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刘国宝
林作忠
付先进
陈力
余行
曹珂
胡正波
张建明
刘莎
柯尉
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China Railway Siyuan Survey and Design Group Co Ltd
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China Railway Siyuan Survey and Design Group Co Ltd
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Abstract

The utility model relates to a transverse connecting node of a concrete prefabricated member, which comprises a first prefabricated plate and a second prefabricated plate, wherein a plurality of transverse bolt sleeves are pre-embedded in the transverse connecting end of the first prefabricated plate, a transverse connecting steel plate is arranged at the transverse connecting end of the second prefabricated plate, and the transverse connecting steel plate abuts against the transverse connecting end of the first prefabricated plate and is assembled and connected with the transverse bolt sleeves through a plurality of transverse bolts; concrete is cast in the connecting node, and the transverse connecting steel plate is coated with the cast-in-place concrete. In addition, the utility model also relates to an assembled underground station adopting the transverse connecting node of the concrete prefabricated member. The utility model adopts the assembly structure of the transverse connecting steel plate, the transverse bolt sleeve and the transverse bolt to realize the transverse connection between the two precast slabs, has convenient operation and high reliability of the connection structure, and can effectively improve the structural reliability and the stress performance of the connection node by leading the transverse connection node of the precast concrete to be the steel plate-concrete node through the cast-in-place concrete.

Description

Concrete prefabricated part transverse connection node and assembled underground station
Technical Field
The utility model belongs to the technical field of building engineering, particularly relates to the technical field of underground station construction, and particularly relates to a transverse connecting node of a concrete prefabricated member and an assembled underground station adopting the transverse connecting node of the concrete prefabricated member.
Background
The underground station is constructed by cast-in-place reinforced concrete mostly, the construction operation environment is poor, the process is complex, the construction period is long, the influence of various weather and climate is large, the construction quality is influenced by various factors and is difficult to guarantee, and meanwhile, a lot of waste building rubbish is 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 also popularized, 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, and a station bottom plate, a station middle plate, a station top plate and the like are generally constructed in a cast-in-place mode; especially for the non-column station, if the station middle plate and the station top plate adopt the prefabricated construction, the strength of the transverse connection node between the prefabricated parts is difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a transverse connecting node of a concrete prefabricated member and an assembled underground station adopting the transverse connecting node of the concrete prefabricated member, which can at least solve part of defects in the prior art.
The utility model relates to a transverse connecting node of a concrete prefabricated member, which comprises a first prefabricated plate and a second prefabricated plate, wherein a plurality of transverse bolt sleeves are pre-embedded in the transverse connecting end of the first prefabricated plate, a transverse connecting steel plate is arranged at the transverse connecting end of the second prefabricated plate, and the transverse connecting steel plate abuts against the transverse connecting end of the first prefabricated plate and is assembled and connected with the transverse bolt sleeves through a plurality of transverse bolts; concrete is cast in the connecting node, and the transverse connecting steel plate is coated with the cast-in-place concrete.
As one embodiment, the transverse connection steel plate includes a web, and an installation end wing plate and a connection end wing plate respectively connected to two transverse ends of the web, wherein the installation end wing plate is embedded in the transverse connection end of the second prefabricated plate and anchored by an anchoring steel bar embedded in the second prefabricated plate, and each transverse bolt is inserted into the connection end wing plate.
In one embodiment, the web is provided with a stiffening rib.
In one embodiment, the transverse connecting end of the first prefabricated panel and/or the transverse connecting end of the second prefabricated panel extend with transverse steel bars, the transverse steel bars are distributed on the upper side and/or the lower side of the transverse connecting steel plate, and the cast-in-place concrete further covers the exposed transverse steel bars.
As one embodiment, the first prefabricated plate and the second prefabricated plate are extended with transverse steel bars; at the upper side of the transverse connection steel plate, the transverse steel bars extending out of the two prefabricated plates are welded, and at the lower side of the transverse connection steel plate, the transverse steel bars extending out of the two prefabricated plates are lapped.
In one embodiment, the transverse connecting end of one of the prefabricated panels is configured as a first step end which is narrow at the top and wide at the bottom, and the cast-in-place concrete also fills the step area of the first step end.
In one embodiment, the transverse connecting end of the other prefabricated panel is configured as a second step end which is wide at the top and narrow at the bottom, and the cast-in-place concrete also fills the step area of the second step end.
In one embodiment, each of the transverse bolt sleeves is anchored by an embedded anchor bar embedded in the first prefabricated panel.
The utility model also relates to an assembled underground station, which comprises a station bottom plate, a station middle plate, a station top plate and station side walls, wherein at least one of the station bottom plate, the station middle plate and the station top plate is a prefabricated assembled structural plate, and the prefabricated assembled structural plate comprises the transverse connecting node of the concrete prefabricated member.
The utility model has at least the following beneficial effects:
the transverse connecting node of the precast concrete provided by the utility model adopts an assembly structure of the transverse connecting steel plate, the transverse bolt sleeve and the transverse bolt to realize the transverse connection between two precast slabs, is convenient to operate and high in reliability of the connecting structure, and can effectively improve the structural reliability and the stress performance of the connecting node because the transverse connecting node of the precast concrete is a steel plate-concrete node by casting concrete on site.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a fabricated underground station according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a transverse connection node of a concrete prefabricated member according to an embodiment of the utility model;
FIG. 3 is a sectional view taken along line A-A of FIG. 2 showing a middle plate of a station;
FIG. 4 is a sectional view B-B of FIG. 2 showing a middle plate of a station;
FIG. 5 is a sectional view A-A of the vault of the station in FIG. 2;
FIG. 6 is a sectional view B-B of the vault of the station in FIG. 2;
FIG. 7 is a cross-sectional view taken at C-C of FIG. 2;
fig. 8 is a cross-sectional view taken along line D-D of fig. 2.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 2 to 6, the transverse connection node 100 of the concrete prefabricated member comprises a first prefabricated plate 1 and a second prefabricated plate 2, wherein a plurality of transverse bolt sleeves 11 are pre-embedded in a transverse connection end of the first prefabricated plate 1, a transverse connection steel plate 21 is arranged at a transverse connection end of the second prefabricated plate 2, and the transverse connection steel plate 21 abuts against the transverse connection end of the first prefabricated plate 1 and is connected with each transverse bolt sleeve 11 in an assembling manner through a plurality of transverse bolts (shown and not labeled); concrete is cast in place at the connection node 100 and the transverse connection steel plate 21 is coated with the cast-in-place concrete.
It can be understood that, the transverse connecting steel plate 21 is provided with transverse bolt through holes, the transverse bolt through holes are the same in number as the transverse bolt sleeves 11 and are aligned one by one, and then the transverse bolts penetrate through the transverse bolt through holes and then are screwed with the corresponding transverse bolt sleeves 11.
Preferably, as shown in fig. 2, for the pre-embedded arrangement of the transverse bolt sleeves 11, each transverse bolt sleeve 11 is anchored by the pre-embedded anchor bars 12 embedded in the first precast slab 1, so as to ensure the pre-embedded structural strength and the stress performance of the transverse bolt sleeve 11 in the first precast slab 1, and thus ensure the connection structural strength and the working reliability between the transverse bolt sleeve 11 and the transverse connecting steel plate 21 and the bolt.
For the installation of the above-mentioned transverse connecting steel plate 21, one end thereof is preferably embedded in the second prefabricated plate 2 to achieve a good connection structural strength. In one embodiment, the transverse connection steel plate 21 includes a web plate, and a mounting end wing plate and a connecting end wing plate respectively connected to two transverse ends of the web plate, wherein the mounting end wing plate is embedded in the transverse connecting end of the second prefabricated plate 2 and anchored by an anchoring steel bar embedded in the second prefabricated plate 2, and each transverse bolt is inserted into the connecting end wing plate. As can be understood, the mounting end wing plate is embedded in the second prefabricated plate 2 when the second prefabricated plate 2 is prefabricated, so that the binding force and the integral stress performance between the second prefabricated plate 2 and the mounting end wing plate can be improved; the connection end flap is adapted to abut against the first prefabricated panel 1. Wherein, a stiffening rib can be arranged on the web plate, which can improve the structural strength and rigidity of the transverse connecting steel plate 21, thereby improving the stress performance of the transverse connecting joint 100 of the concrete prefabricated member.
Based on the arrangement of the transverse connecting steel plates 21, it is obvious that the transverse distance is formed between the first prefabricated plate 1 and the second prefabricated plate 2, the cast-in-place concrete can fill the transverse distance, the two prefabricated plates are connected into a whole, on one hand, the first prefabricated plate 1 and the second prefabricated plate 2 are connected to form a complete and continuous plane through the cast-in-place concrete so as to complete a prefabricated structure, on the other hand, the transverse connecting joint 100 of the prefabricated concrete member is a steel plate-concrete joint, and the structural reliability and the stress performance of the connecting joint 100 can be effectively improved.
Generally, the first prefabricated panel 1 and the second prefabricated panel 2 are reinforced concrete slabs. Preferably, transverse steel bars 41 extend out of the transverse connecting end of the first precast slab 1 and/or the transverse connecting end of the second precast slab 2, the transverse steel bars 41 are distributed on the upper side and/or the lower side of the transverse connecting steel plate 21, and the cast-in-place concrete further covers the exposed transverse steel bars 41, so that the bonding force and the cooperative stress between the precast slabs and the cast-in-place concrete can be improved. As shown in fig. 3 to 6, it is preferable that the transverse connecting end of the first prefabricated panel 1 and the transverse connecting end of the second prefabricated panel 2 are extended with transverse reinforcing bars 41; it is preferable that transverse reinforcing bars 41 are disposed at the upper and lower sides of the transverse connecting steel plate 21, respectively, and the transverse reinforcing bars 41 at the upper side of the transverse connecting steel plate 21 are protruded from the two prefabricated plates, respectively, and the transverse reinforcing bars 41 at the lower side of the transverse connecting steel plate 21 are protruded from the two prefabricated plates, respectively.
Further preferably, the two prefabricated panels are welded together by the transverse steel bars 41 extending from the upper side of the transverse connecting steel plate 21, which is relatively easy to operate, thereby ensuring the efficiency and quality of the steel bar welding operation, and on the other hand, the strength and rigidity of the steel bar framework near the upper surface of the joint can be improved, thereby improving the structural strength, the shear resistance and other stress performances of the connecting joint 100. On the lower side of the transverse connecting steel plate 21, the transverse reinforcing bars 41 extending from the two prefabricated plates are overlapped to facilitate construction operation.
It is further preferred that the lateral attachment end of one of the prefabricated panels is configured as a first step end narrow at the top and wide at the bottom, and the cast-in-place concrete also fills the step area of the first step end, as shown in fig. 3-6. Based on the structure, the binding force between the precast slab and the cast-in-place concrete can be improved, and the cast-in-place concrete is partially occluded and laid on the precast slab, so that the precast slab has a supporting and restraining effect on the cast-in-place concrete, and the stress performance and the working reliability of the node can be improved. In the above-mentioned solution in which the transverse reinforcing bars 41 extend from the prefabricated slab, at least a portion of the transverse reinforcing bars 41 may extend from the vertical step connecting surface of the first step end; furthermore, the extension length of the transverse steel bar 41 of the prefabricated slab is smaller than the width of the step surface of the lower step, and the transverse steel bar 41 of another prefabricated slab extends to the step area to be welded, so that the weak connection position of the transverse steel bar 41 can be compensated by the supporting action of the step, and the stress performance of the connection node 100 is effectively improved.
Further preferably, as shown in fig. 3 to 6, the lateral connecting end of the other prefabricated panel is configured as a second step end which is wide at the top and narrow at the bottom, and the cast-in-place concrete also fills the step area of the second step end. Based on the structure, the binding force between the precast slab and the cast-in-place concrete can also be improved, and the precast slab is partially occluded and laid on the cast-in-place concrete, so that the cast-in-place concrete has a supporting and restraining effect on the precast slab, and the load bearing capacity of the precast slab can be improved. In the above-mentioned solution in which the transverse reinforcing bars 41 extend from the prefabricated slab, at least a portion of the transverse reinforcing bars 41 may also extend from the vertical step connecting surface of the second step end, and the transverse reinforcing bars 41 of another prefabricated slab extend to the step area of the second step end, so that the overlapping length of the reinforcing bars can be effectively increased, and the structural strength and the operational reliability of the connecting node 100 can be improved.
Example two
As shown in fig. 1, an embodiment of the present invention provides an assembled underground station, including a station bottom plate 200, a station middle plate 300, a station top plate 400, and station side walls 500, where at least one of the station bottom plate 200, the station middle plate 300, and the station top plate 400 is a prefabricated assembled structural plate, and the prefabricated assembled structural plate includes the concrete prefabricated member transverse connection node 100 provided in the first embodiment.
The prefabricated assembly type structural slab can be divided into a plurality of transverse prefabricated components along the transverse direction, and the transverse connection node 100 structural form of the concrete prefabricated component can be adopted between every two adjacent transverse prefabricated components. For the station middle plate 300, the first prefabricated plate 1 and the second prefabricated plate 2 are both generally flat plates; for the station floor 200 and the station roof 400, the disassembly prefabrication of the lateral prefabricated members can be performed according to the design shape, for example, in the embodiment shown in fig. 5 and 6, the station roof 400 is in the form of a dome, and the first prefabricated panel 1 and the second prefabricated panel 2 can be curved panels accordingly.
Furthermore, in the longitudinal length range of the underground station (the longitudinal direction of the station is parallel to the longitudinal direction of the track), the prefabricated structural slab can be divided into a plurality of longitudinal prefabricated sections to be sequentially assembled, so that the prefabricated members can be conveniently produced, transported, stored and constructed on site. In the two adjacent groups of the transverse connection nodes 100 of the concrete prefabricated members, two adjacent first prefabricated plates 1 are spliced along the longitudinal direction of the station, and two adjacent second prefabricated plates 2 are spliced along the longitudinal direction of the station; the splicing structure can adopt a conventional tongue-and-groove splicing structure, and in the embodiment, the following splicing structure is preferably adopted:
taking the example of splicing two adjacent first prefabricated panels 1, as shown in fig. 7 and 8, two longitudinal ends of each first prefabricated panel 1 are provided with post-cast grooves 311, when the two first prefabricated panels 1 are spliced, the two post-cast grooves 311 at the longitudinal splicing nodes are spliced to form a post-cast channel 31, and the post-cast channel 31 can be a groove-type channel (the top opening is formed as a notch) or a hole-type channel; preferably, the hole-type post-cast channel 31 is adopted, that is, the notch of the post-cast groove 311 faces to another first precast slab 1 (the upper edge and the lower edge of the notch of the post-cast groove 311 are respectively provided with a certain distance from the upper plate surface and the lower plate surface of the first precast slab 1), a pouring gate 32 communicated with the post-cast groove 311 is correspondingly arranged on the upper plate surface of the precast slab, concrete can be poured into the hole-type post-cast channel 31 through the pouring gate 32, the pouring gate 32 can be arranged on only one of the first precast slabs 1, or the pouring gates 32 can be arranged on two first precast slabs 1, and the two pouring gates 32 at the longitudinal splicing nodes are spliced to form a post-cast hole communicated with the post-cast channel 31, and the pouring gate 32 on each first precast slab 1 can be provided with a plurality of pouring gates 32.
The splicing structure enables adjacent plates to be reliably connected, is convenient to construct, and ensures that the prefabricated structural slab can meet the structural design requirement.
Particularly, the post-cast channel 31 is communicated with the step area of the transverse connecting end of the precast slab, so that post-cast concrete at the longitudinal splicing node and cast-in-place concrete at the transverse connecting node 100 can be connected into a whole, and the structural integrity and the stress performance of the prefabricated structural slab can be effectively improved.
Further, as shown in fig. 7 and 8, longitudinal reinforcing bars 42 in the prefabricated panels may be extended into the post-cast channels 31 to improve the bonding force between the prefabricated panels and the post-cast concrete at the longitudinal splicing nodes.
Preferably, for the second prefabricated panels 2 provided with the transverse connecting steel plates 21, the transverse connecting steel plates 21 further comprise two spliced wing plates respectively connected to two longitudinal ends of the web plate, and at the longitudinal splicing nodes of the two second prefabricated panels 2, the two adjacent spliced wing plates are mutually abutted and fixedly connected into a whole through longitudinal bolts. The structure can further improve the structural integrity and the cooperative stress of the prefabricated assembly type structural slab.
In particular, for the prefabricated structural slab, after all prefabricated components are connected (including the connection of the transverse connecting steel plates 21 at the transverse connecting nodes 100, the transverse bolt sleeves 11, the transverse bolts, the longitudinal connection between two adjacent transverse connecting steel plates 21 and the splicing alignment between two longitudinally adjacent prefabricated plates), the concrete cast-in-place operation at each transverse connecting node 100 and each longitudinally spliced node of the prefabricated structural slab can be simultaneously completed, so that the construction period can be remarkably shortened, and the structural integrity of the prefabricated structural slab can be improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (9)

1. A precast concrete horizontal connection node, includes first prefabricated plate and second prefabricated plate, its characterized in that: a plurality of transverse bolt sleeves are pre-embedded in the transverse connecting end of the first prefabricated plate, a transverse connecting steel plate is arranged at the transverse connecting end of the second prefabricated plate, and the transverse connecting steel plate abuts against the transverse connecting end of the first prefabricated plate and is assembled and connected with each transverse bolt sleeve through a plurality of transverse bolts; concrete is cast in the connecting node, and the transverse connecting steel plate is coated with the cast-in-place concrete.
2. The precast concrete transverse connecting node of claim 1, wherein: the transverse connecting steel plate comprises a web plate, and an installation end wing plate and a connecting end wing plate which are respectively connected to two transverse ends of the web plate, wherein the installation end wing plate is embedded in the transverse connecting end of the second prefabricated plate and anchored through an anchoring steel bar embedded in the second prefabricated plate, and each transverse bolt penetrates through the connecting end wing plate.
3. The precast concrete transverse connecting node of claim 2, wherein: and the web plate is provided with a stiffening rib.
4. The precast concrete transverse connecting node of claim 1, wherein: transverse steel bars extend out of the transverse connecting end of the first precast slab and/or the transverse connecting end of the second precast slab, the transverse steel bars are distributed on the upper side and/or the lower side of the transverse connecting steel plate, and the cast-in-place concrete further covers the exposed transverse steel bars.
5. The precast concrete transverse connecting joint according to claim 4, characterized in that: transverse steel bars extend out of the first prefabricated plate and the second prefabricated plate; at the upper side of the transverse connection steel plate, the transverse steel bars extending out of the two prefabricated plates are welded, and at the lower side of the transverse connection steel plate, the transverse steel bars extending out of the two prefabricated plates are lapped.
6. A precast concrete transverse connection node according to any one of claims 1 to 5, characterized in that: the transverse connecting end of one prefabricated slab is formed into a first step end with a narrow top and a wide bottom, and the cast-in-place concrete also fills a step area of the first step end.
7. The precast concrete transverse connecting node of claim 6, wherein: the transverse connecting end of the other prefabricated slab is formed into a second step end with a wide upper part and a narrow lower part, and the cast-in-place concrete also fills the step area of the second step end.
8. The precast concrete transverse connecting node of claim 1, wherein: and each transverse bolt sleeve is anchored by an embedded anchor bar embedded in the first precast slab.
9. The utility model provides an assembled underground station, includes station bottom plate, station medium plate, station roof and station side wall, its characterized in that: at least one of the station floor, the station middle plate and the station top plate is a prefabricated assembly type structural plate including the concrete prefabricated member transverse connection node as claimed in any one of claims 1 to 8.
CN202120587759.XU 2021-03-23 2021-03-23 Concrete prefabricated part transverse connection node and assembled underground station Active CN215483078U (en)

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CN202120587759.XU CN215483078U (en) 2021-03-23 2021-03-23 Concrete prefabricated part transverse connection node and assembled underground station

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Application Number Priority Date Filing Date Title
CN202120587759.XU CN215483078U (en) 2021-03-23 2021-03-23 Concrete prefabricated part transverse connection node and assembled underground station

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