CN212957167U - Precast concrete superimposed sheet with external detachable enhancement truss - Google Patents
Precast concrete superimposed sheet with external detachable enhancement truss Download PDFInfo
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- CN212957167U CN212957167U CN202020733388.7U CN202020733388U CN212957167U CN 212957167 U CN212957167 U CN 212957167U CN 202020733388 U CN202020733388 U CN 202020733388U CN 212957167 U CN212957167 U CN 212957167U
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Abstract
The utility model discloses a precast concrete superimposed sheet with external detachable reinforcement truss, including precast bottom plate body and at least six pre-buried sleeves with cross steel bar, the precast bottom plate body is equipped with at least two truss steel bar, the pre-buried sleeves with cross steel bar are respectively arranged at two ends of the truss steel bar and mid-span position, the threaded opening of the pre-buried sleeve with cross steel bar is at the bottom of the precast bottom plate, the lower part of the precast bottom plate is equipped with external detachable reinforcement truss, the detachable reinforcement truss comprises extension screw, shoulder pole beam, upper nut and lower nut, the extension screw is in threaded matching connection with the pre-buried sleeve, the shoulder pole beam is equipped with through hole corresponding to the position of the extension screw, the extension screw is equipped with upper nut, shoulder pole beam and lower nut in turn, the shoulder pole beam is arched downwards under the combined action of the upper and lower nuts at two sides and mid-span position, the utility model discloses realize the combination hoist and mount of multiple concrete superimposed sheet, can reduce the bottom sprag and remove the bottom sprag from even.
Description
Technical Field
The utility model relates to an assembly type structure technical field, concretely relates to precast concrete superimposed sheet with external detachable enhancement truss.
Background
With the continuous deepening of the innovation of the architecture of China and the continuous expansion of the architecture scale, the development of the architecture industrialization is in great tendency. As a structural form which accords with industrial development, the prefabricated concrete structure has the characteristics of high efficiency, emission reduction, greenness, low carbon, high component quality, labor force reduction and the like, and is gradually becoming the mainstream direction of the development of the building industry.
The prefabricated floor slab is mainly formed by adopting a truss reinforced concrete composite floor slab, the composite floor slab is constructed by using a template with a specific size in a component factory, paving distribution ribs and truss ribs on the template, then pouring concrete to manufacture a prefabricated bottom plate, conveying the prefabricated bottom plate to a construction site when the strength of the concrete meets the design requirement, using the prefabricated bottom plate as a bottom template, erecting a template on the edge of the prefabricated bottom plate, directly matching the distribution ribs on the upper part of the prefabricated bottom plate and pouring the concrete to form the composite floor slab.
The prefabricated bottom plate of coincide floor transports to the job site back from the mill, at first will carry out the hoist and mount work of prefabricated bottom plate, and present way utilizes the tower crane to hoist prefabricated bottom plate to corresponding floor one by one, only handling a prefabricated bottom plate at every turn promptly, and efficiency is lower, because the tower crane still needs other building materials of handling job site, takes place when the worker phenomenon of litter, and leads to the time limit for a project to delay. At present, the laminated floor slab is applied to the majority of fabricated houses, the house type of the houses is limited, so the size specifications of the laminated floor slab of a certain project are limited, and the possibility of continuously hanging a plurality of slabs during one-time hoisting is provided.
In addition, the prefabricated bottom plate is used as an important structural component of the composite floor slab, when a post-cast layer is poured, the prefabricated bottom plate serves as a permanent bottom die for use, but at present, when the cast-in-place layer of the composite slab is poured on a construction site, most of the prefabricated bottom plate still adopts a supporting mode of fully paving wood formworks and erecting full framing scaffolds, the advantage of the composite slab cannot be reflected, the cost is high, and the construction period is long. Because the prefabricated bottom plate of truss reinforcing bar is adopted, prestressing force is not applied to the distribution muscle or truss reinforcing bar of prefabricated bottom plate, consequently prefabricated bottom plate also can not be precambered, consequently the support of prefabricated bottom plate lower part is indispensable under construction load. However, if the wooden formwork or the full framing scaffold is improperly supported or the special support is improperly arranged, the prefabricated bottom plate may be deformed too much during cast-in-place, and the prefabricated bottom plate is easy to crack, so that the stress performance of the composite slab is certainly influenced, and even the structure safety is influenced.
Therefore, a precast concrete composite slab which can be hoisted by combining a plurality of blocks and can reduce or even eliminate bottom support is needed.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a precast concrete superimposed sheet with external detachable enhancement truss realizes the combination hoist and mount of multiple concrete superimposed sheet, can reduce the precast concrete superimposed sheet that the bottom sprag removed the bottom sprag even from.
In order to solve the technical problem, the utility model provides a concrete superimposed sheet with external detachable enhancement truss, including prefabricated bottom plate body and six at least pre-buried sleeves that have the cross reinforcing bar, be equipped with at least twice truss reinforcing bar and protrusion prefabricated bottom plate surface on the prefabricated bottom plate body, a plurality of pre-buried sleeves that have the cross reinforcing bar are all pre-buried into truss reinforcing bar inboard and arrange truss reinforcing bar chord muscle and web member junction in under, truss reinforcing bar chord muscle is provided with lifting point marker with the juncture of web member, pre-buried sleeve with cross reinforcing bar sets up respectively at truss reinforcing bar both ends and strides the well position, the threaded opening of pre-buried sleeve with the cross reinforcing bar is in prefabricated bottom plate bottom, the prefabricated bottom plate lower part has external detachable enhancement truss, detachable enhancement truss includes extension screw rod, The shoulder pole beam is in threaded matching connection with the embedded sleeve, a through hole corresponding to the position of the lengthened screw rod is formed in the shoulder pole beam, the lengthened screw rod is sequentially provided with the upper nut, the shoulder pole beam and the lower nut in a penetrating mode, and the shoulder pole beam is arched downwards under the combined action of the upper nut and the lower nut on the two sides and the midspan position.
The utility model discloses a preferred embodiment, further include when having pre-buried sleeve of cross reinforcing bar along setting up on same truss reinforcing bar, should guarantee on same water flat line, when setting up on many truss reinforcing bars, the pre-buried sleeve line perpendicular to many that has the cross reinforcing bar truss reinforcing bar.
The utility model discloses a preferred embodiment, further include the setting position of pre-buried sleeve with cross reinforcing bar in the prefabricated bottom plate of the same size specification should keep unanimous.
The utility model discloses a preferred embodiment, further include prefabricated bottom plate thickness is 70mm, prefabricated bottom plate can wrap up the pre-buried sleeve that has the cross reinforcing bar.
The utility model discloses a preferred embodiment, further include the internal thread section length of pre-buried sleeve with cross reinforcing bar is 30mm, cross reinforcing bar diameter is 10 mm.
In a preferred embodiment of the present invention, the diameter of the extension screw is not less than 20 mm.
In a preferred embodiment of the present invention, the diameter of the through hole on the shoulder pole beam is larger than the diameter of the extension screw.
The utility model discloses a preferred embodiment, further include this internal a plurality of distribution reinforcing bars that are provided with of prefabricated bottom plate.
The utility model discloses a preferred embodiment, further include the below of extension screw rod still is connected with threaded sleeve, threaded sleeve's both ends all set up threaded hole, threaded sleeve one end and extension screw rod threaded connection, the other end is connected with the lifting hook.
In a preferred embodiment of the present invention, the threaded sleeve further has a length of 50 to 80 mm.
The utility model has the advantages that:
the upper nuts at the midspan positions of the shoulder pole beams are adjusted, the upper nuts are screwed downwards, so that the shoulder pole beams arch downwards, the shoulder pole beams give upward counter-force to the screw rods, prestress is applied to the prefabricated bottom plate, the prefabricated bottom plate arches upwards in advance, convenience is provided for applying prestress to the prefabricated bottom plate, the rigidity of the prefabricated bottom plate is improved, the safety of the structure is guaranteed, meanwhile, the lower full scaffold is not used for supporting, and the cost is saved.
The reinforcing truss with the detachable outer body is adopted, so that the construction process is simplified, the construction cost is reduced, and the reinforcing truss is detachable and can be recycled.
By adopting the hoisting process, the hoisting work of a plurality of laminated slabs can be completed by once hoisting, the hoisting times are reduced, the construction progress is accelerated, the position of the embedded sleeve of the laminated slab with the same size is fixed, and the better force transmission effect is realized in the hoisting process.
Drawings
Fig. 1 is a schematic structural diagram of the prefabricated base plate of the present invention;
fig. 2 is a schematic structural view of the detachable reinforcing truss of the present invention;
fig. 3 is a schematic structural view of the pre-buried sleeve with the cross-shaped reinforcing bars of the present invention;
FIG. 4 is a schematic view of the construction process of the detachable reinforcing truss of the present invention;
fig. 5 is a schematic structural view of the lifting of a plurality of stacked plates according to the present invention.
The reference numbers in the figures illustrate: 1. prefabricating a bottom plate; 2. pre-burying a sleeve; 3. truss reinforcing steel bars; 4. a lifting point marker; 5. lengthening the screw; 6. a shoulder pole beam; 7. screwing a nut; 8. a lower nut; 9. a threaded sleeve; 10. and (4) a lifting hook.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Referring to fig. 1-3, an embodiment of the concrete composite slab with the external detachable reinforcement truss of the present invention comprises a prefabricated bottom plate 1 and at least six pre-embedded sleeves 2 with cross bars, wherein the prefabricated bottom plate 1 is provided with at least two truss bars 3 protruding out of the surface of the prefabricated bottom plate 1, a plurality of pre-embedded sleeves 2 with cross bars are pre-embedded into the inner sides of the truss bars 3 and are disposed under the joints of the upper chord bars and the web rods of the truss bars 3, lifting point markers 4 are disposed at the junctions of the upper chord bars and the web rods of the truss bars 3, the pre-embedded sleeves 2 with cross bars are respectively disposed at the two ends and the midspan position of the truss bars 3, the threaded openings of the pre-embedded sleeves 2 with cross bars are disposed at the bottom of the prefabricated bottom plate 1, and the external detachable reinforcement truss is disposed at the lower portion of the prefabricated bottom plate 1, the detachable reinforcing truss comprises a lengthening screw rod 5, a carrying pole beam 6, an upper nut 7 and a lower nut 8, the lengthening screw rod 5 is in threaded matching connection with the embedded sleeve 2, a through hole corresponding to the lengthening screw rod 5 is formed in the carrying pole beam 6, the lengthening screw rod 5 is sequentially provided with the upper nut 7, the carrying pole beam 6 and the lower nut 8 in a penetrating mode, the carrying pole beam 6 is arched downwards under the combined action of the upper nut and the lower nut at the two sides and the midspan position, two truss reinforcing steel bars are arranged on the prefabricated bottom plate in the embodiment, and the detachable reinforcing truss is arranged below each truss reinforcing steel bar. The method provides convenience for applying prestress on the prefabricated bottom plate 1, improves the rigidity of the prefabricated bottom plate 1, ensures the safety of the structure, simultaneously uses few or even no lower full scaffold for supporting, saves the cost, simplifies the construction process and reduces the construction cost by adopting the reinforcing truss which is detachable in vitro, and the reinforcing truss can be recycled.
Referring to fig. 4, specifically, in the construction process, in order to enable the carrying pole beam 6 to arch downwards, a first prefabricated bottom plate 1 is lifted to 1-2 m above another prefabricated bottom plate 1, an extension screw 5 is connected to an embedded sleeve 2 at the bottom of a prefabricated bottom plate 1 body, an upper nut 7 is screwed on the extension screw 5, then a carrying pole beam 6 is penetrated, a lower nut 8 is screwed to fix the carrying pole beam 6, the carrying pole beam 6 is arranged in parallel along the long side direction of the prefabricated bottom plate 1, a screw with a certain length is reserved at the lower end of the lower nut 8 to leave a certain space for the movement of the nut, a space is reserved for a hoisting sleeve connected with threaded holes at two ends, the two ends of the carrying pole beam 6 are fixed and locked by the upper nut and the lower nut, the lower nut 8 of the extension screw 5 connected with the hoisting sleeve at the midspan position of the carrying pole beam 6 is firstly screwed downwards, a space is reserved for downward arching of the shoulder pole beam 6, then the upper nut 7 is screwed downwards to enable the shoulder pole beam 6 to arch downwards, and finally the lower nut 8 is screwed upwards to fix and lock the midspan position of the shoulder pole beam 6.
Specifically, when setting up on same truss reinforcing bar 3, should guarantee on same water flat line along pre-buried sleeve 2 with cross reinforcing bar, when setting up on many truss reinforcing bars 3, 4 line perpendicularis of pre-buried sleeve with cross reinforcing bar are many truss reinforcing bar 3, make pre-buried sleeve 2 with cross reinforcing bar be the rectangular array and distribute on prefabricated bottom plate 1.
Specifically, the setting positions of the embedded sleeves 2 with the cross steel bars in the prefabricated bottom plates 1 with the same size and specification are kept consistent, so that a better force transmission effect is realized during combined lifting.
Specifically, 1 thickness of prefabricated bottom plate is 70mm, prefabricated bottom plate 1 can wrap up the embedded sleeve 2 that has the cross reinforcing bar, the thread length of the embedded sleeve 2 that has the cross reinforcing bar is 30mm, the cross reinforcing bar diameter is 10 mm.
Specifically, the diameter of the extension screw 5 is not less than 20mm, and the diameter of the through hole on the shoulder pole beam 6 should be larger than the diameter of the extension screw 5, so that the shoulder pole beam 6 can penetrate through the extension screw 5.
Specifically, this internal a plurality of distribution steel bars that are provided with of prefabricated bottom plate 1 can strengthen the intensity of prefabricated bottom plate body.
Referring to fig. 5, in another embodiment, in the construction process, when a plurality of prefabricated bottom plates 1 need to be lifted simultaneously, a threaded sleeve 9 can be further connected below a lengthened screw rod 5, threaded holes are formed in both ends of the threaded sleeve 9, one end of the threaded sleeve 9 is in threaded connection with the lengthened screw rod 5, the other end of the threaded sleeve 9 is connected with a lifting hook 10, one end of a steel wire rope penetrates through the lifting hook 10, the other end of the steel wire rope penetrates through a position with a lifting point marker 4 on another laminated plate truss steel bar to lift a plurality of laminated plates at one time, and by adopting the lifting process, the lifting work of the plurality of laminated plates can be completed by one-time lifting, the lifting times are reduced, and the construction progress is accelerated.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (10)
1. The utility model provides a precast concrete superimposed sheet with external detachable enhancement truss, a serial communication port, including prefabricated bottom plate body and six at least pre-buried sleeves that have the cross reinforcing bar, be equipped with at least twice truss reinforcing bar and protrusion prefabricated bottom plate surface on the prefabricated bottom plate body, a plurality of pre-buried sleeves that have the cross reinforcing bar are all pre-buried into truss reinforcing bar inboard and arrange truss reinforcing bar chord member and web member junction in under, truss reinforcing bar chord member and web member's juncture are provided with lifting point marker, the pre-buried sleeve that has the cross reinforcing bar sets up respectively at truss reinforcing bar both ends and mid-span position, the screw thread opening of the pre-buried sleeve that has the cross reinforcing bar is in prefabricated bottom plate bottom, prefabricated bottom plate lower part has external detachable enhancement truss, detachable enhancement truss includes extension screw, shoulder pole roof beam, top nut, The shoulder pole beam is provided with a through hole corresponding to the position of the lengthened screw rod, the lengthened screw rod is sequentially provided with an upper nut, a shoulder pole beam and a lower nut in a penetrating manner, and the shoulder pole beam is arched downwards under the combined action of the upper nut and the lower nut at the two sides and the midspan position.
2. The precast concrete composite slab with the external detachable type reinforced truss as claimed in claim 1, wherein the embedded sleeves with the cross bars are arranged along the same truss bar and are ensured to be on the same horizontal line, and when arranged on a plurality of truss bars, the embedded sleeves with the cross bars are connected to be perpendicular to the plurality of truss bars.
3. The precast concrete composite slab with the external detachable type reinforced truss as claimed in claim 1, wherein the arrangement position of the embedded sleeves with the cross bars in the precast floor boards with the same size specification should be kept consistent.
4. The precast concrete composite slab with the external detachable type reinforced truss as claimed in claim 1, wherein the thickness of the precast bottom plate is 70mm, and the precast bottom plate can wrap the embedded sleeve with the cross steel bars.
5. The precast concrete composite slab with the external detachable type reinforcement truss according to claim 1, wherein the length of the internal thread section of the embedded sleeve with the cross bar is 30mm, and the diameter of the cross bar is 10 mm.
6. The precast concrete composite slab with the external detachable type reinforcing truss as claimed in claim 1, wherein the diameter of the extension screw is not less than 20 mm.
7. The precast concrete composite slab with the external detachable type reinforcement truss according to claim 1, wherein the diameter of the through hole of the shoulder pole beam is larger than the diameter of the extension screw.
8. The precast concrete composite slab with the external detachable type reinforcing truss as claimed in claim 1, wherein a plurality of distribution steel bars are provided in the precast floor body.
9. The precast concrete composite slab with the external detachable reinforcement truss as recited in claim 1, wherein a threaded sleeve is further connected below the extension screw, threaded holes are formed at both ends of the threaded sleeve, one end of the threaded sleeve is in threaded connection with the extension screw, and the other end of the threaded sleeve is connected with a lifting hook.
10. The precast concrete composite slab with the external detachable reinforcing truss according to claim 9, wherein the length of the threaded sleeve is 50 to 80 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020733388.7U CN212957167U (en) | 2020-05-07 | 2020-05-07 | Precast concrete superimposed sheet with external detachable enhancement truss |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020733388.7U CN212957167U (en) | 2020-05-07 | 2020-05-07 | Precast concrete superimposed sheet with external detachable enhancement truss |
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| CN212957167U true CN212957167U (en) | 2021-04-13 |
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| CN202020733388.7U Active CN212957167U (en) | 2020-05-07 | 2020-05-07 | Precast concrete superimposed sheet with external detachable enhancement truss |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931364A (en) * | 2021-10-29 | 2022-01-14 | 筑友智造建设科技集团有限公司 | Construction method of prestressed thin plate with detachable ribs and laminated slab |
| CN114427276A (en) * | 2021-12-15 | 2022-05-03 | 重庆大学 | Prestressed reinforcement hook type additional steel member laminated slab and construction method thereof |
| CN114508196A (en) * | 2021-11-29 | 2022-05-17 | 易建网科技有限公司 | Combined composite floor slab |
-
2020
- 2020-05-07 CN CN202020733388.7U patent/CN212957167U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931364A (en) * | 2021-10-29 | 2022-01-14 | 筑友智造建设科技集团有限公司 | Construction method of prestressed thin plate with detachable ribs and laminated slab |
| CN114508196A (en) * | 2021-11-29 | 2022-05-17 | 易建网科技有限公司 | Combined composite floor slab |
| CN114427276A (en) * | 2021-12-15 | 2022-05-03 | 重庆大学 | Prestressed reinforcement hook type additional steel member laminated slab and construction method thereof |
| CN114427276B (en) * | 2021-12-15 | 2022-09-30 | 重庆大学 | Prestressed reinforcement hook type additional steel member laminated slab and construction method thereof |
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