CN212356211U - Support precast concrete component steel strand wires hoisting point system of multiple hoist and mount mode - Google Patents

Support precast concrete component steel strand wires hoisting point system of multiple hoist and mount mode Download PDF

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Publication number
CN212356211U
CN212356211U CN202022059282.6U CN202022059282U CN212356211U CN 212356211 U CN212356211 U CN 212356211U CN 202022059282 U CN202022059282 U CN 202022059282U CN 212356211 U CN212356211 U CN 212356211U
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China
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steel strand
hoisting
precast concrete
steel
concrete member
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CN202022059282.6U
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Inventor
周扬
兰涌森
王宇航
任涛
杨均德
骆光进
张�杰
谭继可
陈庆
郭松龄
王镜深
刘子昂
钟晓玲
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CSIC Haizhuang Windpower Co Ltd
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CSIC Haizhuang Windpower Co Ltd
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Abstract

The utility model discloses a precast concrete component steel strand hoisting point system supporting multiple hoisting modes, which comprises a first steel strand, a first end plate and a limiting component; the middle part of the first steel strand is bent to form an annular lifting point, two ends of the first steel strand extend towards the interior of the precast concrete member and are respectively fixedly provided with a first end plate, and the two first end plates are embedded in the precast concrete member at intervals; the middle part of the limiting assembly is provided with a sleeve ring, the sleeve ring is sleeved at the hanging point, and the limiting assembly is buried in the precast concrete member. The hoisting system has the advantages that the hoisting is convenient, various hoisting modes can be borne, the construction efficiency is improved, the mechanical property of the prefabricated part is not affected, and the hoisting point system can be arranged on the same prefabricated concrete part to form a plurality of hoisting point system groups.

Description

Support precast concrete component steel strand wires hoisting point system of multiple hoist and mount mode
Technical Field
The utility model relates to a precast concrete component field, concretely relates to support precast concrete component steel strand wires hoisting point system of multiple hoist and mount mode.
Background
The fabricated concrete structure is a structure fabricated by prefabricated concrete members in a reliable connection manner. Compared with the traditional construction mode, the assembly type building has the advantages of good building quality, high construction speed, cost saving, energy saving, consumption reduction, environmental protection and the like. In recent years, the prefabricated building has been rapidly developed under the strong support of governments of all levels.
In the construction process of the fabricated building, the hoisting of the prefabricated parts is directly related to whether the construction can be smoothly carried out. For the precast concrete member in the fabricated concrete structure, because the concrete has great weight and large volume, the lifting point with reasonable design is required to meet the requirement of lifting construction. Especially, with the improvement of the performance of the hoisting equipment, the weight of a single prefabricated part is increased, and the hoisting difficulty of the prefabricated part is increased. In the process of factory demoulding and field installation of the precast concrete member, various hoisting modes such as a horizontal hoisting mode, a vertical hoisting mode, a turnover hoisting mode and the like can exist, and the hoisting point can bear axial tension and eccentric tension. For prefabricated components such as prefabricated shear walls, prefabricated floor slabs and the like, a flat lifting mode is required in the factory demolding and lifting transportation process, and when the prefabricated components are installed on a construction site, the prefabricated components need to be turned over from a horizontal state to a vertical state, and are vertically lifted and positioned.
When hoisting the hoisting point of the heavy prefabricated part, the hoisting point is easy to generate plastic deformation, the splitting at the hoisting point, the uneven stress inside the prefabricated part and the like, so that the hoisting is inconvenient, the construction progress is influenced, and the mechanical property of the prefabricated part is easy to influence.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art exists, the utility model provides a support precast concrete component steel strand wires hoisting point system of multiple hoist and mount mode to solve the hoisting point of the precast element of the current gross weight that proposes in the above-mentioned background art when hoist, easily produce hoisting point plastic deformation, hoisting point department splitting and the inside atress inequality situation of precast element, lead to hoist and mount inconvenient, influence the construction progress, and easily produce the problem of influence to the mechanical properties of precast element itself. The utility model aims at researching and developing a precast concrete component hoisting point system that bears the weight of the dynamic height, can undertake multiple hoist and mount mode, construction is simple, convenient to use, do not influence the mechanical properties of component itself and have the significance to the development that impels assembled building.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a precast concrete member steel strand hoisting point system supporting multiple hoisting modes comprises a first steel strand, a first end plate and a limiting assembly;
the middle part of the first steel strand is bent to form an annular lifting point, two ends of the first steel strand extend towards the interior of the precast concrete member and are respectively fixedly provided with a first end plate, and the two first end plates are embedded in the precast concrete member at intervals;
the middle part of the limiting assembly is provided with a sleeve ring, the sleeve ring is sleeved at the hanging point, and the limiting assembly is buried in the precast concrete member.
Adopt first steel strand wires, because steel strand wires have the characteristics that warp and resume for the hoisting point is difficult for plastic deformation and influences hoist and mount next time after the hoist and mount is accomplished, adopts first end plate, because the area of contact of first end plate and precast concrete is big, makes the lifting surface big, is favorable to the inside atress of precast element even, adopts spacing subassembly to bury underground in the precast concrete component, and spacing subassembly card is located the hoisting point department, from hoisting point department splitting during the prevention hoist and mount. The structure enables the hoisting to be convenient, and various hoisting modes can be borne, so that the construction efficiency is improved, and the mechanical property of the prefabricated part is not influenced. And a plurality of hoisting point systems can be arranged on the same precast concrete component to form a hoisting point system group.
Furthermore, the precast concrete member steel strand hoisting point system supporting multiple hoisting modes further comprises a constraint sleeve, the constraint sleeve is sleeved at the hoisting point, and a sleeve ring of the limiting assembly is sleeved on the constraint sleeve. The first steel strand penetrates through the constraint sleeve to play a role in fixing the first steel strand, and the first steel strand is prevented from opening under the action of tensile force to enable concrete to be cracked and damaged.
Furthermore, the limiting assembly comprises two limiting reinforcing steel bars, and the two limiting reinforcing steel bars are bent and crossed at the lifting point to form a lantern ring. The two limiting steel bars are bent and crossed at the position of the restraining sleeve to play a role in limiting the lateral displacement of the restraining sleeve, bear the component of eccentric tension in the processes of horizontal hoisting, overturning hoisting and the like, and prevent the first steel strand from laterally moving to enable the precast concrete member to be split and damaged.
Furthermore, the end of the limiting steel bar is provided with a hook. The end part of the limiting reinforcing steel bar is provided with a hook to enhance the bonding performance with concrete, so that the stress of the limiting reinforcing steel bar is better.
Furthermore, the precast concrete member steel strand hoisting point system supporting multiple hoisting modes further comprises a plurality of component load bearing assemblies, each load bearing assembly comprises a second steel strand and a second end plate, the second end plate is fixedly arranged at one end of the second steel strand, and the other end of the second steel strand is fixedly connected with the first end plate, or the other end of the second steel strand is fixedly connected with the other second end plate. The force borne by the hoisting can be dispersed in the precast concrete member by adopting the force-bearing assembly, so that the stress at each part is uniform, and the larger uplift bearing capacity can be provided.
Furthermore, the precast concrete member steel strand hoisting point system supporting multiple hoisting modes further comprises a steel bar net piece, wherein the steel bar net piece is arranged in the coverage range of the first steel strand and the second steel strand, the bonding performance between the steel bar net piece and concrete can be improved, and the stress concentration in the hoisting process is reduced. The reinforcing bar net piece is used for reinforcing the wholeness between hoisting point system and the precast concrete component, prevents that the precast concrete component from taking place local die-cut destruction.
Furthermore, the reinforcing mesh is provided with two layers which are respectively arranged on two sides of the first steel strand. Set up the reinforcing bar net piece and make precast concrete component's wholeness better, and reinforcing bar net piece and spacing reinforcing bar welded fastening together for spacing reinforcing bar's stress structure is better.
Further, the reinforcing mesh comprises horizontally distributed reinforcing steel bars and vertically distributed reinforcing steel bars which are in cross consolidation, the horizontally distributed reinforcing steel bars are perpendicular to the first end plate, and the vertically distributed reinforcing steel bars are perpendicular to the horizontally distributed reinforcing steel bars. The reinforcing mesh structure formed by mutually and vertically crossing and consolidating the vertically distributed reinforcing steel bars and the horizontally distributed reinforcing steel bars has high strength, and the bearing capacity is improved.
Furthermore, the ends of the horizontally distributed reinforcing steel bars and the vertically distributed reinforcing steel bars are provided with hooks. The end parts of the vertically distributed reinforcing steel bars and the horizontally distributed reinforcing steel bars are provided with hooks to enhance the bonding performance with concrete, so that the whole stress effect is better.
Adopt above-mentioned technical scheme, compare with prior art, the beneficial effects of the utility model are that:
1. the first steel strand is used as a lifting point, and the first end plate is arranged at the end part of the first steel strand to increase the anti-pulling bearing capacity of the first steel strand, so that the lifting point system can bear larger lifting weight and is suitable for large precast concrete members with assembled structures.
2. The force borne by hoisting can be dispersed in the precast concrete member by adopting the second steel strand and the second end plate, so that the stress at each part is uniform, and the uplift bearing capacity is further improved.
3. The first end plate and the second end plate thereof have excellent bonding performance with concrete, and can bear larger axial tension; the use of spacing reinforcing bar and restraint sleeve pipe provides the lateral restraint for first steel strand wires, prevents that precast concrete component from taking place the splitting destruction under the eccentric pulling force effect. Therefore, the hoisting point system can bear the pulling force in multiple directions and is suitable for multiple hoisting modes such as horizontal hoisting, two-point hoisting, overturning hoisting and the like.
4. The hoisting point system has the advantages of low manufacturing cost, high comprehensive economic benefit, simple, convenient and flexible use, no need of dismounting after hoisting, no influence on subsequent construction procedures and no influence on the mechanical property of the precast concrete member.
5. The lifting point system can be arranged in the same precast concrete component for single use, and can also be arranged in a plurality of lifting point system forming groups for common use.
6. Simple structure is reliable, and the suitability is strong.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
Fig. 1 is a three-dimensional structure view of the present invention;
FIG. 2 is a three-dimensional view of the present invention with the reinforcing mesh removed;
FIG. 3 is a three-dimensional structural view of a precast concrete unit according to the present invention;
fig. 4 is a three-dimensional structural view of the restraint sleeve of the present invention;
fig. 5 is a three-dimensional structural view of a limiting reinforcement and a constraining sheath according to another embodiment of the present invention.
Reference numerals:
1-a first steel strand;
2-a first end plate;
3-limiting component, 3 a-lantern ring, 31-limiting steel bar;
4-constraining the cannula;
5-sharing a stress assembly, 51-a second steel strand and 52-a second end plate;
6-reinforcing steel bar mesh, 61-horizontally distributed reinforcing steel bars and 62-vertically distributed reinforcing steel bars;
100-precast concrete member.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1, the precast concrete member steel strand hoisting point system supporting multiple hoisting modes according to the embodiment includes a first steel strand 1, a first end plate 2 and a limiting assembly 3;
the middle part of the first steel strand 1 is bent to form an annular hanging point, two ends of the first steel strand 1 extend towards the interior of the precast concrete member 100 and are respectively and fixedly provided with a first end plate 2, and the two first end plates 2 are embedded in the precast concrete member 100 at intervals. In this embodiment, the first steel strand 1 is arranged along the main stress direction of hoist and mount so as to undertake axial tension, the fifty percent discount end after the fifty percent discount of first steel strand 1 is as the hoisting point, and the resistance to plucking bearing capacity of first steel strand 1 is improved on first end plate 2 in the anchor of two ends of the other end, and first steel strand 1 is arranged so as to increase the anchor region of steel strand in the form of "eight", prevents the die-cut destruction of precast concrete component 100 local. In addition, can be according to the pre-buried bellows of precast concrete component 100's needs, first steel strand wires 1 wear to locate in the bellows for get rid of the bonding stress between first steel strand wires 1 and the concrete, make first steel strand wires 1 freely flexible, make the hoist and mount pulling force all undertake by first end plate 2. The bonding between the first end plate 2 and the precast concrete unit 100 is reliable, can provide larger uplift bearing capacity, and is suitable for large precast concrete units 100 with assembled structures.
The middle part of spacing subassembly 3 is equipped with the lantern ring 3a, and the department of hanging a department is located to the lantern ring 3a cover, and spacing subassembly 3 is buried underground in precast concrete component 100. Specifically, the precast concrete member steel strand hoisting point system supporting multiple hoisting modes further comprises a constraint sleeve 4, the constraint sleeve 4 is sleeved at the hoisting point, and the lantern ring 3a of the limiting component 3 is sleeved on the constraint sleeve 4. The first steel strand 1 penetrates through the constraint sleeve 4 to fix the first steel strand 1, and the first steel strand 1 is prevented from opening under the action of tensile force to cause the splitting damage of the precast concrete member 100. The spacing assembly 3 comprises two spacing steel bars 31, and the two spacing steel bars 31 are bent and crossed at a hanging point to form a lantern ring 3 a. The two limiting steel bars 31 are bent and crossed at the position of the restraining sleeve 4 to play a role in limiting the lateral displacement of the restraining sleeve 4. Limiting steel bars 31 are arranged on two sides of the constraint sleeve 4 to bear the eccentric tension component in the processes of horizontal hanging, overturning hanging and the like, and the first steel strand 1 is prevented from laterally moving to cause the precast concrete member 100 to be split and damaged. The arrangement of the constraint sleeve 4 and the limiting steel bar 31 enables the lifting point system to bear various lifting modes such as straight lifting, two-point lifting and overturning lifting. As a further optimization scheme, the end of the limiting steel bar 31 is provided with a hook. The end of the limiting steel bar 31 is provided with a hook to enhance the bonding performance with concrete, so that the stress of the limiting steel bar 31 is better.
In another embodiment, the limiting stopper 3 only adopts one limiting steel bar 31, the middle part of the limiting steel bar 31 is provided with a lantern ring 3a, and the lantern ring 3a is sleeved on the limiting sleeve 4. Specifically, since the two ends of the constraining sleeve 4 can limit the position of the lantern ring 3a, the limiting steel bar 31 is sleeved into the constraining sleeve 4, and then the limiting at the two ends of the constraining sleeve 4 is manufactured.
As a further optimized scheme, the precast concrete member steel strand hoisting point system supporting multiple hoisting modes further comprises a plurality of component bearing stress assemblies 5, each of the component bearing stress assemblies 5 comprises a second steel strand 51 and a second end plate 52, the second end plate 52 is fixedly arranged at one end of the second steel strand 51, and the other end of the second steel strand 51 is fixedly connected with the first end plate 2, or the other end of the second steel strand 51 is fixedly connected with the other second end plate 52. The force applied by hoisting can be dispersed in the precast concrete member 100 by adopting the force sharing assembly 5, so that the stress at each position is uniform, and the larger uplift bearing capacity can be provided.
Of course, the precast concrete member steel strand hoisting point system supporting multiple hoisting modes can be further provided with the steel mesh 6, the steel mesh 6 is arranged in the coverage range of the first steel strand 1 and the second steel strand 51, the bonding performance between the steel mesh 6 and concrete can be improved, and stress concentration in the hoisting process is reduced. The reinforcing mesh 6 is used for enhancing the integrity between the lifting point system and the precast concrete member 100 and preventing the precast concrete member 100 from being locally punched and damaged. Specifically, the reinforcing mesh 6 is provided with two layers which are respectively arranged at two sides of the first steel strand 1. The reinforcing mesh sheets 6 are arranged on the two sides, so that the integrity of the precast concrete member 100 and the reinforcing mesh sheets 6 is better, and the reinforcing mesh sheets 6 and the limiting reinforcing bars 31 are welded and fixed together, so that the stress structure of the limiting reinforcing bars 31 is better. The reinforcing mesh 6 comprises horizontally distributed reinforcing bars 61 and vertically distributed reinforcing bars 62 which are in cross consolidation, wherein the horizontally distributed reinforcing bars 61 are perpendicular to the first end plate 2, and the vertically distributed reinforcing bars 62 are perpendicular to the horizontally distributed reinforcing bars 61. The reinforcing mesh structure formed by mutually vertically crossing and consolidating the vertically distributed reinforcing steel bars 62 and the horizontally distributed reinforcing steel bars 61 has high strength, and the bearing capacity is improved. Distributed steel bars and vertical distributed steel bars 62 are arranged in the coverage range of the first steel strand 1 and the second steel strand 51 to form a double-layer bidirectional steel bar mesh 6, so that stress concentration in the hoisting process is reduced, integrity between a hoisting point system and the precast concrete member 100 is improved, and the precast concrete member 100 is prevented from being damaged by local punching. As a further optimization scheme, hooks are arranged at the ends of the horizontal distribution steel bars 61 and the vertical distribution steel bars 62. The ends of the vertically distributed reinforcing steel bars 62 and the horizontally distributed reinforcing steel bars 61 are provided with hooks to enhance the bonding performance with concrete, so that the whole stress effect is better.
The steel strand hoisting point system supporting various hoisting modes is arranged before the precast concrete member 100 is poured and molded together with the precast concrete member 100. When the precast concrete member 100 is poured, a hoisting ring formed by the first steel strand 1 of the hoisting point system is reserved, and after the hoisting is finished, grouting is performed to fill the corresponding part, so that the hoisting point system does not need to be dismounted, and the construction procedures of later installation and the like of the precast concrete member 100 are not influenced.
The prefabricated concrete member steel strand hoisting point system supporting various hoisting modes has high uplift bearing capacity, supports various hoisting modes such as flat hoisting, straight hoisting and overturning hoisting, does not influence the mechanical property of the prefabricated concrete member 100, is suitable for large prefabricated concrete members 100 of assembled structures, is simple in construction, convenient to use, low in cost and high in comprehensive benefit, is beneficial to propelling the development of assembled buildings, and has wide engineering application prospect.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (9)

1. A precast concrete member steel strand hoisting point system supporting multiple hoisting modes is characterized by comprising a first steel strand, a first end plate and a limiting assembly;
the middle part of the first steel strand is bent to form an annular lifting point, two ends of the first steel strand extend towards the interior of the precast concrete member and are respectively fixedly provided with a first end plate, and the two first end plates are embedded in the precast concrete member at intervals;
the middle part of the limiting assembly is provided with a sleeve ring, the sleeve ring is sleeved at the hanging point, and the limiting assembly is buried in the precast concrete member.
2. The precast concrete member steel strand hoisting point system supporting multiple hoisting modes according to claim 1, further comprising a restraining sleeve, wherein the restraining sleeve is sleeved at the hoisting point, and a sleeve ring of the limiting assembly is sleeved on the restraining sleeve.
3. The precast concrete member steel strand hoisting point system supporting multiple hoisting modes according to claim 1 or 2, wherein the limiting assembly comprises two limiting steel bars, and the two limiting steel bars are bent and crossed at the hoisting point to form a lantern ring.
4. The precast concrete member steel strand hoisting point system supporting multiple hoisting modes according to claim 3, wherein hooks are arranged at the ends of the limiting steel bars.
5. The precast concrete member steel strand hoisting point system supporting multiple hoisting modes according to claim 1, further comprising a plurality of groups of sharing stress components, wherein each sharing stress component comprises a second steel strand and a second end plate, the second end plate is fixedly arranged at one end of the second steel strand, and the other end of the second steel strand is fixedly connected with the first end plate, or the other end of the second steel strand is fixedly connected with the other second end plate.
6. The precast concrete member steel strand hoisting point system supporting multiple hoisting modes according to claim 5, further comprising a steel bar mesh, wherein the steel bar mesh is arranged in the coverage range of the first steel strand and the second steel strand, and the steel bar mesh can increase the bonding performance with concrete and reduce the stress concentration in the hoisting process.
7. The precast concrete member steel strand hoisting point system supporting multiple hoisting modes according to claim 6, wherein the steel mesh is provided with two layers which are respectively arranged at two sides of the first steel strand.
8. The precast concrete member steel strand hoisting point system supporting multiple hoisting modes according to claim 6 or 7, wherein the steel mesh comprises horizontally distributed steel bars and vertically distributed steel bars which are in cross consolidation, the horizontally distributed steel bars are perpendicular to the first end plate, and the vertically distributed steel bars are perpendicular to the horizontally distributed steel bars.
9. The precast concrete member steel strand hoisting point system supporting multiple hoisting modes according to claim 8, wherein hooks are arranged at the ends of the horizontally distributed reinforcing steel bars and the vertically distributed reinforcing steel bars.
CN202022059282.6U 2020-09-18 2020-09-18 Support precast concrete component steel strand wires hoisting point system of multiple hoist and mount mode Active CN212356211U (en)

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CN202022059282.6U CN212356211U (en) 2020-09-18 2020-09-18 Support precast concrete component steel strand wires hoisting point system of multiple hoist and mount mode

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Application Number Priority Date Filing Date Title
CN202022059282.6U CN212356211U (en) 2020-09-18 2020-09-18 Support precast concrete component steel strand wires hoisting point system of multiple hoist and mount mode

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Publication Number Publication Date
CN212356211U true CN212356211U (en) 2021-01-15

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