Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a grouting prefabricated member connecting node structure, which can avoid the problems of lower construction efficiency, complex working procedures, difficult guarantee of construction quality of components and the like in cast-in-situ operation, improve the assembly positioning accuracy of prefabricated members and the strength of connecting nodes, and shorten the construction period.
In order to achieve the above purpose, the invention adopts the following technical scheme:
A grouting prefabricated member connecting node structure comprises an upper prefabricated member, a lower member and a connecting piece connected between the upper prefabricated member and the lower member; the utility model discloses a prefabricated member, including the prefab, go up the prefab and be equipped with the grout hole, grout hole one end opening one end is sealed, and grout hole opening end link up the bottom of going up the prefab, be equipped with grout entry and export on the grout hole, it has grout pipe and play thick liquid pipe to go up pre-buried in the prefab, grout pipe and play thick liquid pipe's one end respectively with grout entry and export intercommunication on the grout hole, the other end all runs through the prefab and extends to the upper prefab side, go up prefab and lower component in all pre-buried have vertical reinforcing bar, the vertical reinforcing bar that corresponds the grout hole on the lower component stretches into in the grout hole, and other vertical reinforcing bars correspond the welding with the vertical reinforcing bar of last prefab.
Further, the connecting piece comprises a vertical connecting steel plate fixed at the bottom end of the upper prefabricated member and a plurality of vertical bolts pre-buried in the lower member; the vertical free end of the vertical connecting steel plate is provided with a plurality of vertical bolt through holes matched with the vertical bolts.
Further, the width of the vertical connection steel plate is smaller than that of the upper prefabricated member, and the grouting holes of the upper prefabricated member are located on the outer side of the vertical connection steel plate.
Further, the upper end of the vertical connecting steel plate is connected with a reinforcing rib which freely extends to the upper prefabricated member.
Further, the bottom of the vertical bolt is anchored by an embedded anchor bar embedded in the lower member.
Further, the vertical connecting steel plates are respectively provided with a plurality of longitudinal bolt through holes which are used for being connected with the vertical connecting steel plates of the adjacent upper prefabricated members in a bolt mode along the two longitudinal ends of the upper prefabricated members.
Further, the two longitudinal ends of the upper prefabricated member are provided with post-pouring grooves, and the post-pouring grooves of the two adjacent upper prefabricated members which are spliced longitudinally are spliced to form a post-pouring channel.
Further, a longitudinal steel bar is arranged in the upper prefabricated member and extends into the post-pouring groove.
Further, the grouting pipe and the grout outlet pipe are obliquely arranged, the grout outlet pipe is located above the grouting pipe, and the position of the closed end of the grouting hole is higher than the installation position of the grout outlet pipe.
In addition, the invention also provides an assembled underground station, which comprises:
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 prefabricated side walls; and each prefabricated side wall 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, and the connection between the prefabricated side wall and the upper side wall section and the connection between the prefabricated side wall and the lower side wall section adopt the grouting prefabricated member connection node structure.
Compared with the prior art, the invention has the beneficial effects that:
(1) The grouting prefabricated member connecting node structure provided by the invention is connected with the upper prefabricated member and the lower member through the connecting piece, and then concrete is poured through the grouting holes for connection, and meanwhile, the vertical steel bars of the lower member extend into the grouting holes, so that the structural strength and the structural integrity of the prefabricated member connecting node are improved, the assembly precision is high, the site construction efficiency is high, and the construction period can be effectively shortened.
(2) According to the invention, the prefabricated side wall and the adjacent peripheral side wall sections are connected by adopting the grouting prefabricated member connection node structure, so that the assembly construction of the underground station can be realized, the strength and construction quality of the station side wall connection node can be effectively improved, and the engineering quality and operation safety of the assembled underground station are ensured.
The present invention will be described in further detail with reference to the accompanying drawings.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described 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.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a number" or "a plurality" is two or more.
Example 1:
As shown in fig. 1 and 2, the present embodiment provides a grouting preform connection node structure including an upper preform 1, a lower member 3, and a connection member 2 connected between the upper preform 1 and the lower member 3; the upper prefabricated member 1 is provided with a grouting hole 7, one end of the grouting hole 7 is open, one end of the grouting hole is closed, the open end of the grouting hole 7 penetrates through the bottom end of the upper prefabricated member 1, the grouting hole 7 is provided with a grouting inlet and a grouting outlet, and specifically, the grouting hole 7 can be formed by embedding a grouting sleeve in the upper prefabricated member 1; a grouting pipe 6 and a grout outlet pipe 5 are embedded in the upper prefabricated member 1, one end of the grouting pipe 6 is communicated with a grouting inlet on a grouting hole 7, the other end of the grouting pipe penetrates through the upper prefabricated member 1 and extends to the side surface of the upper prefabricated member 1 to form a grouting channel inlet, and one end of the grout outlet pipe 5 is communicated with a grouting outlet on the grouting hole 7, and the other end of the grouting pipe penetrates through the upper prefabricated member 1 and extends to the side surface of the upper prefabricated member 1 to form a grouting channel outlet; the vertical steel bars 11 are pre-buried in the upper prefabricated member 1 and the lower member 3, in the connection process of the upper prefabricated member 1 and the lower member 3, the vertical steel bars 11 corresponding to the grouting holes 7 on the lower member 3 extend into the grouting holes 7, the structural strength and structural integrity of the joint are improved, the other vertical steel bars 11 extending upwards on the lower member 3 are correspondingly welded with the vertical steel bars 11 extending downwards on the upper prefabricated member 1, the structural strength and structural integrity of the joint can be further improved, and the steel bar welding structure is generally positioned at the station side of the upper prefabricated member 1 and the lower member 3 and is convenient to operate. After the connection between all the upper prefabricated members 1 and the lower members 3 is completed, concrete enters the joint between the upper prefabricated members 1 and the lower members 3 through the grouting pipe 6 and the grouting holes 7, so that the connection between the upper prefabricated members 1 and the joints of the lower members 3 is completed, and the structural strength and structural integrity of the joints are ensured.
The lower member 3 may be a prefabricated structural member or a formed cast-in-situ structural member, and the prefabrication process in the grouting prefabricated member connection node structure is a conventional technology, which is not described herein.
Further, grout pipe 6 and play thick liquid pipe 5 all slope arrangement, and go out thick liquid pipe 5 and be located the top of grout pipe 6, grout hole 7's blind end position is higher than go out thick liquid pipe 5 mounted position, stretch into grout hole 7's vertical reinforcing bar 11 tip on the lower component 3 and be located grout export top, after the grout is accomplished like this, grout hole 7 interior vertical reinforcing bar 11 runs through the concrete in the grout hole 7, has guaranteed the fastness that vertical reinforcing bar 11 is connected with grout hole 7.
As a specific embodiment, as shown in fig. 1 and 2, the connecting piece 2 includes a vertical connecting steel plate 8 fixed at the bottom end of the upper prefabricated member 1, and a plurality of vertical bolts 9 embedded in the lower member 3; the vertical free end of the vertical connecting steel plate 8 is provided with a plurality of vertical bolt through holes matched with the vertical bolts 9. When the connecting piece 2 is adopted to connect the upper prefabricated part 1 and the lower member 3, the vertical free end of the vertical connecting steel plate 8 is abutted against the lower member 3 and the vertical bolt through holes of the vertical connecting steel plate are opposite to the vertical bolts 9 one by one, and then the vertical connecting steel plate 8 is fixedly connected with the lower member 3 through nuts, so that the connection between the upper prefabricated part 1 and the lower member 3 is realized.
By adopting the assembly structure of the vertical connecting steel plate 8 and the vertical bolts 9, under the condition of meeting the strength and the stress performance of the assembly structure, the assembly construction between the upper prefabricated member 1 and the lower member 3 is facilitated, and the construction efficiency can be improved by screwing the vertical bolts 9 into the vertical bolt through holes through operating tools such as a manipulator and fixing the vertical bolts through nuts; meanwhile, the vertical bolt through holes on the vertical connecting steel plates 8 are aligned with the vertical bolts 9, so that the alignment precision between the upper prefabricated part 1 and the lower member 3 can be ensured, and the construction quality is improved.
Further, as concrete enters the connection node of the upper prefabricated member 1 and the lower member 3 through the grouting pipe 6-the grouting hole 7, the width of the vertical connection steel plate 8 is designed to be smaller than that of the upper prefabricated member 1 so as to reserve the opening position of the grouting hole 7, so that the grouting hole 7 of the upper prefabricated member 1 is positioned at the outer side of the vertical connection steel plate 8, when concrete is cast in place at the connection node of the upper prefabricated member 1 and the lower member 3, the vertical connection steel plate 8 and the concreting vertical steel bar 11 can be coated, and the binding force and the cooperative stress between the lower member 3 and the cast in place concrete are improved.
In order to improve the connection strength between the vertical connection steel plate 8 and the upper prefabricated part 1 and the lower member 3, further, a reinforcing rib 4 which freely extends to the upper prefabricated part 1 can be connected to the upper end of the vertical connection steel plate 8; the bottom of the vertical bolt 9 is anchored by an embedded anchor bar 10 embedded in the lower member 3.
In the longitudinal length range of the underground station (the longitudinal direction of the station is parallel to the longitudinal direction of the track), a plurality of grouting prefabricated member connecting node structures are adopted on each transverse side of the station for splicing so as to facilitate the production, transportation, storage and site construction of prefabricated members; in the structure of the connecting node of two adjacent grouting prefabricated parts, the two vertical connecting steel plates 8 are spliced, the two upper prefabricated parts 1 are spliced, the splicing structure can adopt a conventional tongue-and-groove type splicing structure, and in the embodiment, the following splicing structure is preferably adopted:
For the concatenation of two adjacent vertical connection steel plates 8, as shown in fig. 3, vertical connection steel plate 8 all is equipped with a plurality of vertical bolt through holes that are used for carrying out bolted connection with vertical connection steel plate 8 of adjacent prefabricated member 1 along last prefabricated member 1 vertical both ends, and vertical bolt through holes on the adjacent vertical connection steel plate 8 are just right one by one, and rethread vertical bolt 12 is connected fixedly, has effectively guaranteed the alignment precision of going up prefabricated member 1 longitudinal connection.
For the splicing of two adjacent upper prefabricated members 1, as shown in fig. 4, the two longitudinal ends of the upper prefabricated members 1 are respectively provided with a post-pouring groove 13, when the two upper prefabricated members 1 are spliced, the two post-pouring grooves 13 at the splicing node are spliced to form a post-pouring channel 15, and the post-pouring channel 15 can be a groove channel (the top opening is formed into a notch) or a hole channel; the cross section of the hole type post-pouring channel can be rectangular, round, hexagonal or octagonal, concrete can be poured between longitudinal joints of the connecting node structures of the adjacent grouting prefabricated members through the formed post-pouring channel 15, so that the connecting node structures of the two adjacent grouting prefabricated members can be connected, concrete is poured in the post-pouring channel 15, construction of cast-in-situ wet nodes between the two adjacent longitudinal prefabricated members 1 is finished, and the integrity of the side wall is improved.
Further, the longitudinal steel bars 14 are arranged in the upper prefabricated member 1, the longitudinal steel bars 14 extend into the post-pouring groove 13, and when the two upper prefabricated members 1 are longitudinally spliced, the longitudinal steel bars 14 in the post-pouring groove 13 are overlapped, so that the structural strength and the working reliability of the splicing joint of the upper prefabricated member 1 are improved.
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.
Example 2:
as shown in fig. 5, the present embodiment provides an assembled underground station, comprising:
The station comprises a station bottom plate 16 and two groups of lower side wall structures arranged on two sides of the station bottom plate 16, wherein each lower side wall structure comprises a plurality of lower side wall sections 17 which are spliced in sequence along the longitudinal direction of the station;
The station roof 20 and two groups of upper side wall structures arranged on two sides of the station roof 20, wherein the upper side wall structures comprise a plurality of upper side wall sections 19 which are spliced in sequence along the longitudinal direction of the station;
A plurality of prefabricated side walls 18; and each prefabricated side wall 18 on each side is connected with each upper side wall section 19 and each lower side wall section 17 on the corresponding side to form a station side wall, and the connection between the prefabricated side wall 18 and the upper side wall section 19 and the lower side wall section 17 adopts the grouting prefabricated member connection node structure.
Specifically, in the connection between the prefabricated side wall 18 and the upper side wall segment 19 and the lower side wall segment 17, the prefabricated side wall 18 may be the upper prefabricated member 1 in the above embodiment, the upper side wall segment 19 and the lower side wall segment 17 may be the lower member 3 in the above embodiment, the connection between the prefabricated side wall 18 and the upper side wall segment 19 and the lower side wall segment 17 may refer to the splicing scheme between the upper prefabricated member 1 and the lower member 3 in the above embodiment, and the longitudinal splicing of the plurality of prefabricated side walls 18 may refer to the splicing scheme between the upper prefabricated members 1 in the above embodiment, which is not repeated herein.
The foregoing examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention, and all designs that are the same or similar to the present invention are within the scope of the present invention.