CN217711170U - Precast concrete slab splicing node based on mortise-tenon joint - Google Patents
Precast concrete slab splicing node based on mortise-tenon joint Download PDFInfo
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- CN217711170U CN217711170U CN202221689377.9U CN202221689377U CN217711170U CN 217711170 U CN217711170 U CN 217711170U CN 202221689377 U CN202221689377 U CN 202221689377U CN 217711170 U CN217711170 U CN 217711170U
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Abstract
The utility model belongs to the technical field of the prefabricated building, a precast concrete slab splicing node based on mortise-tenon joint is disclosed, which comprises precast concrete slabs spliced in the same plane, wherein the splicing side plate end of each precast concrete slab is provided with a plate end tenon and a plate end mortise which are opposite in position, the splicing side plate end of each precast concrete slab is provided with in-plate longitudinally distributed reinforcing steel bars, and in-plate transversely distributed reinforcing steel bars extend outwards at the plate end mortise and are arranged into U-shaped end hoops; every two crisscross a plurality of hoops that form of U type end hoop are provided with node vertical distribution muscle in a plurality of hoops, and the precast concrete board who has arranged node vertical distribution muscle passes through post-cast concrete fixed connection. The utility model discloses compare the ordinary prefabricated plate of reserving long straight section reinforcing bar, it is more convenient, safe in transportation, hoist and mount process, not only construct convenient and fast more, the node is new, old concrete interlock ability is stronger, is showing anti crack resistance, the anti shearing bearing capacity of level and the component wholeness that has improved the node.
Description
Technical Field
The utility model belongs to the technical field of the assembly type structure, specific theory relates to a precast concrete slab concatenation node based on mortise-tenon joint.
Background
The fabricated concrete building is designed and built by adopting concrete members prefabricated in factories in a mechanical hoisting and on-site reliable connection mode. The fabricated concrete building has the advantages of standardized design, industrial production and fabricated construction, has less field wet operation and short construction period, can improve the construction environment and reduce pollution, and has good sustainable development. The node connection of the precast concrete members is a weak link of the assembly type building construction, the integrity and the safety of the structure are directly influenced, and the aims of improving the bearing capacity and the anti-seismic performance of the structure can be fulfilled by improving the node connection structure and the structure form. In addition, it is also one of the research focuses of the fabricated concrete building to make the precast concrete members convenient for construction and transportation.
The precast concrete slab in the fabricated concrete building mainly comprises a floor slab and a wall slab, and the connection mode of the slab can be divided into dry connection and wet connection according to the construction process. The dry connection means that the prefabricated parts are connected by adopting dry joints such as bolts and anchor bolts, and pouring is not needed in the later period. The wet connection is constructed in a manner that overhanging steel bars are reserved at the plate ends, the reserved steel bars are connected during construction, and then concrete or grouting material is poured at the joints for anchoring. The bearing capacity, the seismic performance and the in-plane rigidity of the wet connection node are close to those of a cast-in-place concrete member, and the integrity, the crack resistance and the durability are good, so that the wet connection mode is more widely adopted in the project at the present stage.
At present, in the existing wet connection construction method of precast concrete plates, the core part of a node is bound with reinforcing steel bars on site, concrete is poured later, at the moment, the precast concrete plates are used as templates and structural stress members, and more lattice reinforcing steel bars are required to be arranged between the plates to ensure the reliable connection of the structure, so that the node is complex in form and complicated in construction; the anchor connecting steel bars extending out of the plate side need to be subjected to grooving treatment in a factory, so that the production efficiency is reduced; the overhanging exposed steel bars also cause inconvenience in the links of transportation, hoisting, installation and the like, and influence the construction progress and safety; in order to facilitate the on-site overlapping and anchoring of the reserved steel bars, the size and the position of the concrete reserved hole need to be very accurate, which has high requirements on production accuracy. In addition, in the use process, the concrete poured behind the joint part of the node is difficult to ensure the structural integrity, and the joint surface of the new concrete and the old concrete of the node is easy to crack when bearing load. Therefore, improving the joint connection technology to ensure the connection effectiveness of the precast concrete slabs, ensuring the construction quality and improving the industrialization level of the fabricated building is a problem to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that precast concrete slab nodal connection's correlation technique on the basis of precast concrete slab nodal connection mode that wets, provides a precast concrete slab concatenation node based on mortise-tenon joint, can be used to floor or wallboard component connection, all has the advantage in the aspect of production, construction and atress.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
the utility model provides a precast concrete slab splicing node based on mortise-tenon joint, which comprises precast concrete slabs spliced in the same plane, wherein intervals are arranged between the precast concrete slabs;
the splicing side plate end of the precast concrete plates is provided with plate end tenons and plate end mortises which are uniformly distributed and alternately arranged, and the plate end tenons and the plate end mortises between the precast concrete plates are opposite in position;
the end of the splicing side plate of the precast concrete plate is reserved with in-plate longitudinally distributed reinforcing steel bars, and the longitudinally distributed reinforcing steel bars are exposed out of the mortise at the plate end; the steel bars transversely distributed in the precast concrete slab extend outwards at the mortise at each slab end and are arranged into U-shaped end hoops; the U-shaped end hoops between the precast concrete plates are staggered in pairs to form a plurality of hoop belts; two node vertical distribution ribs are arranged in the plurality of hoops, and the two node vertical distribution ribs are respectively arranged close to the staggered position of the U-shaped end hoop; the precast concrete plates with the node vertical distribution ribs are fixedly connected through post-cast concrete.
Further, the height of board end tenon with the degree of depth of board end tongue-and-groove is all not less than 100mm, every the contained angle of two relative sides and horizontal plane in the board end tongue-and-groove is all not greater than the friction angle.
Further, the U-shaped end hoop comprises two straight sections extending outwards from the precast concrete plate and an arc top integrally connected with the two straight sections.
Furthermore, the arc top of the U-shaped end hoop exceeds the end face of the board end tenon by at least 250mm, and the length of the end face of the straight section of the U-shaped end hoop extending out of the board end mortise is not less than 0.6lab(ii) a Wherein labThe length of the tendon is basically anchored for the tendon.
Further, the node vertical distribution ribs penetrate all the hoops and are parallel to the longitudinal distribution ribs in the plate.
The utility model has the advantages that:
the utility model discloses a precast concrete board concatenation node based on mortise-tenon joint sets up board end tenon and board end tongue-and-groove in precast concrete board's concatenation side to combine inboard longitudinal distribution reinforcing bar, U type end hoop, the vertical distribution muscle of node, post-cast concrete to form the nodal connection, compare the ordinary prefabricated plate of reserving the long straight section reinforcing bar, it is more convenient, safety at transportation, hoist and mount in-process.
The U-shaped end hoops and the U-shaped end hoops of the adjacent precast concrete plates are buckled to form the effective hoop, and the vertical distribution ribs of the nodes are combined, so that the construction is more convenient and faster, and the hole precision requirement of the precast concrete plates in production is lower. When the node concrete is cast in situ, the slab end tenon and the slab end mortise of the precast concrete slab can also be used as templates, so that the construction efficiency is improved.
The utility model discloses a precast concrete board concatenation node based on mortise-tenon joint, can guarantee the reliable transmission of the regional moment of flexure of node and shear force, not only connect into adjacent precast concrete board unified whole, the interlock intensity between post-cast concrete and the precast concrete has also been strengthened, the atress performance of new and old concrete faying face has effectively been improved, the in-plane intensity and the rigidity of floor have been guaranteed, show the anti cracking performance who has improved the node, the anti shearing bearing capacity of level and component wholeness, it is significant to precast concrete structure concrete system.
Drawings
Fig. 1 is a schematic elevation view of a precast concrete slab splicing node provided by the present invention;
fig. 2 is a front view schematically illustrating a precast concrete slab splicing node according to the present invention;
fig. 3 is a schematic top view of a precast concrete slab splicing node provided by the present invention;
fig. 4 is the utility model provides a precast concrete slab concatenation node pour and accomplish the schematic diagram.
In the above figures: 1: prefabricating a concrete slab; 2: a board end tenon; 3: a board end mortise; 4: reinforcing steel bars are longitudinally distributed in the plate; 5: a U-shaped end hoop; 6: the nodes are vertically distributed with ribs; 7: and post-pouring concrete.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
as shown in fig. 1 to 3, the present embodiment discloses a precast concrete panel splicing node based on mortise and tenon connection, which includes precast concrete panels 1 spliced in the same plane, with a space between the precast concrete panels 1. When used as a wallboard, the distance between precast concrete plates 1 is not more than 200mm; when used as a floor, the distance between precast concrete panels 1 is not greater than the smaller of the beam width at the splice node and 300 mm.
The splicing side plate end of the precast concrete plate 1 is provided with a plurality of plate end tenons 2 and a plurality of plate end mortises 3, and the plate end tenons 2 and the plate end mortises 3 are uniformly distributed and alternately arranged. The slab-end tenons 2 and the slab-end mortises 3 between the precast concrete slabs 1 are located opposite to each other. The height of the board end tenon 2 and the depth of the board end mortise 3 are not less than 100mm, and the included angle between two opposite side surfaces and the horizontal plane in each board end mortise 3 is not more than a friction angle so as to ensure the shearing strength of the node.
The in-slab longitudinal distribution steel bars 4 of each precast concrete slab 1 are kept at the end of the spliced side plate without being cut off, namely the longitudinal distribution steel bars 4 penetrate between the plurality of slab end tenons 2 and the plurality of slab end mortises 3 of the precast concrete slab 1 and are exposed out of the slab end mortises 3, so that the integrity and the common stress performance of the cast-in-place part and the precast part at the joint of the nodes are ensured.
The steel bars transversely distributed in the precast concrete plate 1 extend outwards at each plate end mortise 3 and are arranged into U-shaped end hoops 5, and each U-shaped end hoop 5 comprises two straight sections extending outwards from the precast concrete plate 1 and arc tops integrally connected with the two straight sections. The arc top of the U-shaped end hoop 5 exceeds the end surface of the board end tenon 2 by at least 250mm, and the length of the straight section extending out of the end surface of the board end mortise 3 is not less than 0.6lab(labA substantial anchoring length for the tensioned steel bar). Two U-shaped end hoops 5 arranged in the board end mortises 3 at opposite positions between the precast concrete boards 1 are not in the same plane, so that the U-shaped end hoops 5 between the precast concrete boards 1 are staggered in pairs to form a plurality of hoop rings.
Two node vertical distribution ribs 6 are arranged in a plurality of hoops formed between the two precast concrete plates 1, and the node vertical distribution ribs 6 penetrate through all the hoops and are parallel to the longitudinal distribution reinforcing steel bars 4 in the plates. Two node vertical distribution ribs 6 are respectively arranged close to the staggered position of the U-shaped end hoop 5.
And (3) pouring post-cast concrete 7 between the precast concrete plates 1 after the vertical distribution ribs 6 of the nodes are arranged by taking the plate end tenons 2 and the plate end mortises 3 as templates, so that the spliced precast concrete plates 1 form a unified whole, as shown in fig. 4.
The construction method of the precast concrete slab splicing node based on the mortise and tenon connection comprises the following steps:
(1) The precast concrete panel 1 is precast at the factory according to the aforementioned design structure;
(2) Hoisting the precast concrete plates 1 to an installation position, and enabling the plate end tenon 2 and the plate end tenon 2 between the precast concrete plates 1 to be opposite in position, and enabling the plate end mortise 3 and the plate end mortise 3 to be opposite in position;
(3) Binding the U-shaped end hoops 5 after the U-shaped end hoops 5 between the precast concrete plates 1 are staggered pairwise to form a plurality of hoop bands;
(4) Binding two node vertical distribution ribs 6 in a plurality of hoops formed between the precast concrete plates 1, wherein the two node vertical distribution ribs 6 penetrate through all the hoops and are respectively arranged close to the staggered positions of the U-shaped end hoops 5;
(5) And pouring the post-cast concrete 7 by taking the slab end tenon 2 and the slab end mortise 3 of the precast concrete slab 1 as templates, so that the two spliced precast concrete slabs 1 are connected into a unified whole.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many changes and modifications without departing from the spirit and scope of the invention.
Claims (5)
1. The precast concrete plate splicing node based on the tenon-and-mortise connection is characterized by comprising precast concrete plates spliced in the same plane, wherein the precast concrete plates are spaced;
the splicing side plate end of the precast concrete plates is provided with plate end tenons and plate end mortises which are uniformly distributed and alternately arranged, and the plate end tenons and the plate end mortises between the precast concrete plates are opposite in position;
the end of the splicing side plate of the precast concrete plate is reserved with in-plate longitudinally distributed reinforcing steel bars, and the longitudinally distributed reinforcing steel bars are exposed out of the mortise at the plate end; the steel bars transversely distributed in the precast concrete slab extend outwards at the mortise at each slab end and are arranged into U-shaped end hoops; the U-shaped end hoops between the precast concrete plates are staggered in pairs to form a plurality of hoop belts; two node vertical distribution ribs are arranged in the plurality of hoops, and the two node vertical distribution ribs are respectively arranged close to the staggered position of the U-shaped end hoop; the precast concrete plates with the node vertical distribution ribs are fixedly connected through post-cast concrete.
2. The precast concrete slab splicing node based on mortise and tenon connection according to claim 1, wherein the height of the slab end tenon and the depth of the slab end mortise are not less than 100mm, and the included angle between two opposite side surfaces in each slab end mortise and a horizontal plane is not more than a friction angle.
3. The precast concrete plate splicing node based on mortise and tenon joint according to claim 1, wherein the U-shaped end hoop comprises two straight sections extending from the precast concrete plate and an arc top integrally connected to the two straight sections.
4. A precast concrete panel splicing node based on mortise and tenon connection according to claim 3 wherein the arc top of the U-shaped end hoop exceeds the end face of the panel end tenon by at least 250mm and the length of the end face of the straight section of the U-shaped end hoop extending out of the panel end mortise is not less than 0.6lab(ii) a Wherein labThe length of the tendon is basically anchored for the tendon.
5. A precast concrete panel splicing node based on a mortise and tenon connection according to claim 1 wherein the node vertical distribution bars pass through all the hoops and are parallel to the in-panel longitudinal distribution bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221689377.9U CN217711170U (en) | 2022-07-04 | 2022-07-04 | Precast concrete slab splicing node based on mortise-tenon joint |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221689377.9U CN217711170U (en) | 2022-07-04 | 2022-07-04 | Precast concrete slab splicing node based on mortise-tenon joint |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115852771A (en) * | 2022-12-02 | 2023-03-28 | 天津市政工程设计研究总院有限公司 | Fabricated concrete module with plug-in function, pavement and construction method thereof |
| CN117052032A (en) * | 2023-08-03 | 2023-11-14 | 浙江正立高科建设有限公司 | Precast beam slab based on BIM construction technology and installation method thereof |
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2022
- 2022-07-04 CN CN202221689377.9U patent/CN217711170U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115852771A (en) * | 2022-12-02 | 2023-03-28 | 天津市政工程设计研究总院有限公司 | Fabricated concrete module with plug-in function, pavement and construction method thereof |
| CN117052032A (en) * | 2023-08-03 | 2023-11-14 | 浙江正立高科建设有限公司 | Precast beam slab based on BIM construction technology and installation method thereof |
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