CN214531897U - Supporting system for construction of assembled prestressed hollow slab floor - Google Patents

Supporting system for construction of assembled prestressed hollow slab floor Download PDF

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CN214531897U
CN214531897U CN202120243037.2U CN202120243037U CN214531897U CN 214531897 U CN214531897 U CN 214531897U CN 202120243037 U CN202120243037 U CN 202120243037U CN 214531897 U CN214531897 U CN 214531897U
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supporting
steel
construction
hollow slab
scaffold
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王凤来
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Harbin Dacheng Green Building Co ltd
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Harbin Dacheng Green Building Co ltd
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Abstract

The utility model provides an assembled hollow slab superstructure construction supporting system of prestressing force, this supporting system include a plurality of supporting unit, and a plurality of supporting unit connect into a supporting system, and two gate-type scaffolds of every supporting unit set up relatively, and every gate-type scaffold's both sides all are fixed with the steel through rotatory buckle and prop up, and the top U type inslot installation supporting beam that both sides steel propped up, and the hollow slab of prestressing force is placed on two supporting beams, and supports through circle roof beam formwork angle steel in both sides. The utility model provides how to provide the support for the prefabricated plate in the construction of the continuous hollow slab superstructure of assembled prestressing force to the technical problem of supporting system is simplified to the construction advantage of fitting up ization, the utility model discloses an operation such as connecting portion distribution muscle, post-cast concrete provides the support, can resist horizontal load and the vertical load that the hollow slab of assembled prestressing force produced in the construction, does not rely on to attach to other components, is an independent system.

Description

Supporting system for construction of assembled prestressed hollow slab floor
Technical Field
The utility model relates to an assembled prestressing force hollow plate superstructure construction supporting system belongs to prefabricated plate construction supporting system technical field.
Background
The technology of assembling type prestressed continuous hollow slab floor is a new type floor assembling technology. At present, the floor assembling construction technology takes laminated slabs as a mainstream, but has the problems of high manufacturing cost and low efficiency. In order to reduce the cast-in-place concrete amount of the reinforced concrete composite slab, reduce the manufacturing cost of the composite slab, simplify the construction process and construction measures, and excavate the productivity of the existing prefabricated slab, the novel composite floor slab is simple to manufacture, low in cost, less in cast-in-place concrete amount, convenient to construct and reliable in performance through reasonable building construction measures based on the prestressed concrete hollow floor slab with large current amount and wide area, and the requirement of building industrialization is met.
Based on the SP board finished product, two times of processing are carried out along the board span direction. When the variable cross-section unidirectional precast hollow slab is used, the variable cross-section unidirectional precast hollow slab is used as a bottom plate, the hogging moment rib and the cast-in-place concrete superposed layer are arranged in the support areas at two ends, the hogging moment rib is connected with the precast hollow slab preformed steel bars on one hand, and on the other hand, the reliable anchoring at the support position is realized, the continuous stress of the variable cross-section unidirectional precast hollow slab superposed floor system can be realized through the reinforcement arrangement of the cast-in-place superposed layer, and the problems that the stress of the precast slab is not coordinated during construction and use, the connection of a wall body and the precast slab is weak, and the quality of the wall body is difficult to ensure through the connection of horizontal components are thoroughly solved, as shown in figure 1. The variable cross-section unidirectional prefabricated hollow slab superposed floor system of the block building has the advantages of no support during construction, material saving, lightening of self weight of prefabricated components, increase of sound insulation function of slabs and the like, meets the requirements of green, energy saving and environmental protection, and is suitable for superposed floor systems and superposed roof systems of house buildings.
The existing supporting system for plate construction takes the supporting cases of bridges and building cast-in-place plates as examples, and has the common characteristics that a large number of supports and cross bars are needed for supporting templates, the bridge construction is not laterally constrained, more inclined struts are needed to form an independent stress system, the building cast-in-place plates are often combined with template supporting of beams and columns, the requirement on lateral stress resistance of the building cast-in-place plates is not high, the vertical load bearing is taken as the main requirement, and the system is simpler.
When the prefabricated slab is constructed by adopting the assembly technology, the situation changes. Since it is not necessary to re-cast the construction floor, all the formwork is eliminated and only linear support is provided for the prefabricated panels (which are often prefabricated parts of a composite panel), thus resulting in a simplified version of the floor support system. The system consists of the vertical supports and the cross rods, when available horizontal direction constraint exists, self stability can be guaranteed, the system can be set simply, when the available horizontal direction constraint does not exist, the system needs to be formed independently, horizontal load (and vertical load) in precast slab hoisting construction needs to be resisted, and higher requirements are provided for a stress system of the system.
Sometimes, after the prefabricated wall panel is reliably fixed, the prefabricated panel can be lapped on the prefabricated wall panel, or a device fixed on the prefabricated wall panel is arranged for placing the floor slab, which is equivalent to serving as a lateral restraint during the construction of the floor slab, only a vertical support for reducing the slab span is arranged in the slab span, and the requirement and difficulty for the vertical support below the slab are reduced. More often than not, the floor can be laid on a wall (or beam) provided that the wall (or beam) is effectively fixed and has a relatively flat surface that supports the floor after simple bracing, similar to the ring beam or brick wall of a conventional brick masonry building.
In order to reduce the impact of the floor on the support, hoisting the floor by using a large-tonnage hoisting device is also an important measure. For example, the provision of a simple floor vertical support and a tripod at the bottom to prevent tipping of the support to some extent, but its more important function is to allow the support pole to stand alone, facilitating the installation of the entire support system, rather than providing lateral resistance. The independent supporting system is not only effective for floor construction, but also can be used for the construction of precast beams, and the use condition of vertical supporting in the beams and the floors has the defects that the lateral stiffness is low, and the independent horizontal load bearing structure is difficult to form.
The supporting method for this purpose has many forms, and it is common to use single-point supporting and combined supporting in the case of supporting beams. The common feature of both is that the effect of horizontal loading is hardly taken into account, apparently based on the presence of lateral restraint.
In order to resist the horizontal load, a supporting mode similar to a full scaffold is generally adopted, the lateral rigidity is ensured by a plurality of rod systems, the scheme is obviously too conservative from the difference of cast-in-place plates and precast plates, the lateral rigidity is not reasonably improved by the method, and the supporting mode is not changed from cast-in-place to precast mode so as to reduce the engineering consumption.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve and how to provide the supporting for the prefabricated plate in the construction of the continuous hollow slab superstructure of assembled prestressing force to the construction advantage of fitting-up ization simplifies the technical problem of supporting system, provides the supporting system of one set of continuous hollow slab superstructure of assembled prestressing force in the construction link, provides the supporting for operations such as connecting portion distribution muscle, post-cast concrete.
The utility model provides an assembled prestressing force hollow slab superstructure construction supporting system, including a plurality of supporting unit, a plurality of supporting unit connect into a supporting system, every supporting unit includes two gate-type scaffolds, four steel props up, rotatory buckle, two supporting beams and circle roof beam formwork angle steel, two gate-type scaffolds set up relatively, every gate-type scaffold's both sides all are fixed with the steel through rotatory buckle and prop up, the top U type inslot installation supporting beam that both sides steel propped up, the hollow slab of prestressing force is placed on two supporting beams, and both sides support through circle roof beam formwork angle steel.
Preferably, gate-type scaffold includes a plurality of scaffold framves, footboard and a plurality of pull rod, is fixed with the footboard on a plurality of scaffold framves, installs the pull rod between two adjacent scaffold framves.
Preferably, the steel support top comprises an inner pipe, an outer pipe, an adjusting device and a top plate, the inner pipe is installed above the outer pipe, the bottom of the inner pipe is sleeved in the outer appearance, the length of the inner pipe and the length of the outer pipe are adjusted through the adjusting device, and the top plate is installed on the inner pipe.
Preferably, the adjusting device comprises an adjusting nut, a pin and a handle, the adjusting nut is sleeved outside the outer pipe, the pin is inserted into a hole of the inner pipe for positioning, and the handle presses the pin for fixing.
Preferably, the assembled prestressed hollow slab floor construction supporting system further comprises a plurality of supporting scaffold rods, wherein the supporting scaffold rods are vertically positioned above the two door-type scaffolds and are connected with the two opposite steel supports through rotating buckles.
Preferably, the ring beam formwork angle steel is supported through a ring beam side mold support, and the ring beam side mold support is fixed on the steel support and arranged at a certain angle with the steel support.
Assembled prestressing force hollow slab superstructure construction supporting system's beneficial effect do:
1. the supporting system can resist horizontal load and vertical load generated by the fabricated prestressed hollow slab in construction, is not attached to other components, and is an independent system.
2. The support system should be able to provide a horizontal reference surface for the elevation of the plate bottom, which itself should have an adjustment function to achieve the provision of the reference surface.
3. The support system provides linear supports at both ends of each slab, on which the floor can rest stably.
4. The supporting system can be used as a construction operation platform for workers to wear ribs, plaster, joint filling and the like.
5. The support system provides support for the panel end ring beam formwork.
6. After the concrete is poured, the supporting system can firstly dismantle devices except the vertical rods to accelerate turnover.
7. The supporting system is simple, easy to assemble and disassemble and light in self weight.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.
In the drawings:
FIG. 1 is a view showing a structure of a continuous hollow slab according to the background art of the present invention;
fig. 2 is a schematic view of the overall structure of the support system for the construction of the assembled prestressed hollow slab floor according to the present invention;
fig. 3 is an assembly view of the door type scaffold according to the present invention;
fig. 4 is a schematic structural view of the adjustable steel support of the present invention;
FIG. 5 is a schematic structural view of the connection between the door type scaffold and the steel support top of the present invention;
FIG. 6 is a front view of the support system frame of the present invention;
FIG. 7 is a schematic view of the framework of the support system of the present invention;
fig. 8 is a schematic structural view of the ring beam formwork angle steel of the present invention;
the scaffold comprises 1-a scaffold frame, 2-pedals, 3-a pull rod, 4-an outer tube, 5-an adjusting nut, 6-a pin, 7-a handle, 8-a top plate, 9-a steel supporting top, 10-a rotating buckle, 11-a portal scaffold, 12-a ring beam side mold support, 13-a supporting beam, 14-a supporting scaffold rod, 15-a ring beam supporting mold angle steel, 16-a plastering and jointing pedal and 17-a prestressed hollow slab.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:
the first embodiment is as follows: this embodiment is described with reference to fig. 1 to 8. This embodiment assembled hollow slab superstructure construction supporting system of prestressing force, including a plurality of supporting units, a plurality of supporting units connect into a supporting system, every supporting unit includes two gate-type scaffolds 11, four steel props up 9, rotatory buckle 10, two supporting beams 13 and ring beam formwork angle steel 15, two gate-type scaffolds 11 set up relatively, the both sides of every gate-type scaffold 11 all are fixed with steel props up 9 through rotatory buckle 10, the top U type inslot installation supporting beam 13 of both sides steel props up 9, the hollow slab of prestressing force is placed on two supporting beams 13, and both sides support through ring beam formwork angle steel 15.
The door type scaffold 11 comprises a plurality of scaffold frames 1, pedals 2 and a plurality of pull rods 3, the pedals 2 are fixed on the scaffold frames 1, and the pull rods 3 are installed between every two adjacent scaffold frames 1.
The steel support 9 comprises an inner pipe, an outer pipe 4, an adjusting device and a top plate 8, wherein the inner pipe is installed above the outer pipe 4, the bottom of the inner pipe is sleeved in the outer pipe 4, the length of the inner pipe and the length of the outer pipe 4 are adjusted through the adjusting device, and the top plate 8 is installed on the inner pipe.
The inner tube is provided with a hole, the adjusting device comprises an adjusting nut 5, a pin 6 and a handle 7, the adjusting nut 5 is sleeved outside the outer tube 4, the pin 6 is inserted into the hole of the inner tube for positioning, and the handle 7 compresses the pin 6 for fixing.
When the layer height is less than 3.6m, the length of the outer tube 1 is 2400mm, and the maximum height of the inner tube is 3900 mm; when the layer height is 4.2m-4.8m, the length of the outer tube 1 is 3800mm, and the maximum height of the inner tube is 5000 mm.
The assembly type prestressed hollow slab floor construction supporting system further comprises a plurality of supporting scaffold rods 14, wherein the supporting scaffold rods 14 are vertically positioned above the two door-type scaffolds 11 and are connected with the two opposite steel supports 9 through rotating buckles 10.
The door type scaffold 11 is a comparatively formed system structure, the existing product has more dimension and specification, and the narrowest door type scaffold 11 with the width of 950mm can meet the requirement. According to the difference of the height of the floor, the door type scaffold 11 combination can be used in a single layer or in different heights.
The steel support 9 is selected from an adjustable steel support, the height of the inner pipe is adjusted by stretching the inner pipe in the outer pipe 1, holes are drilled in the inner pipe at intervals of 150-200 mm, the inner pipe is positioned by using a pin and an adjusting nut 2, the holes are used for long-distance adjustment, and the adjusting nut 2 is used for short-distance adjustment to ensure the continuity in the whole adjusting range. According to the requirement of the layer height, when the layer height is less than 3.6m, the length of the outer pipe 1 is 2400mm, and the maximum height of the inner pipe is 3900 mm; when the layer height is 4.2m-4.8m, the length of the outer tube 1 is 3800mm, and the maximum height of the inner tube is adjusted to 5000 mm.
Door-type scaffold 11 and steel are propped up the connected mode that adopts the steel pipe scaffold fastener with being connected of 9, have guaranteed that steel pipe and fastener are a laminating state, and the laminating area is the biggest, have overcome old fastener and steel pipe and have been some or line laminating, have eliminated the hidden danger of steel pipe slippage to guarantee and improve scaffold's whole mechanical properties and security performance. The fastener is light and beautiful, the loading and unloading speed is increased, and the labor intensity is reduced.
Because the parallelism of the upper and lower beams and the perpendicularity of the beams and the vertical beams cannot be guaranteed by the manufacturing process of the door-type scaffold 11, the rotating fastener 10 is selected so as to ensure that the steel support top is in the vertical direction during installation and is attached to the ground, so that the inclination of the steel support top 9 is reduced, and the phenomenon that the steel support top 9 topples when the door-type scaffold 11 is removed is prevented.
The ring beam formwork angle steel 15 is supported through a ring beam side mold support 12, and the ring beam side mold support 12 is fixed on the steel support 9 and arranged at a certain angle with the steel support 9.
The construction method of the assembly type prestressed hollow slab floor construction supporting system comprises the following steps:
according to different floor heights and room lengths, selecting proper door type scaffolds 11 to be overlapped and combined at a distance of 100 mm and 200mm from the wall side to assemble two groups of door type scaffolds 11, and selecting proper support scaffold rods 14 according to the room lengths for scaffold spans. The support scaffold rods 14 can be added between the two groups of the door-type scaffolds 11 according to requirements to enhance the horizontal rigidity of the system. The steel supports 9 are respectively connected with 300mm upper parts (connected with the upper cross beam and the lower cross beam of the door type scaffold 11) of the upright columns 200 and 300mm close to the wall side on each door type scaffold 11 frame, the height is adjusted according to the floor height, meanwhile, the steel supports 9 opposite to two sides are connected by the support scaffold rods 14 to increase the horizontal rigidity, and the distance between the support scaffold rods 14 and the bottom of the plate is 250 mm and 400mm according to the needs. Finally, a support beam 13 is arranged in the U-shaped groove of the steel supports 9 at two sides, so that the two rows of support units are connected into a whole.
And pouring a formwork for the ring beam concrete, and after the floor slab is installed, erecting the ring beam formwork on the floor slab and the wall body. Unequal flange beam formwork angle steel 15 is used as a side formwork, and a rotary buckle 10 is used for adjusting the angle of the steel pipe and a flange beam side formwork support 12 to support the side formwork. When the rigidity of the supporting system is weak, the increase of the inclined strut can be properly adopted to improve the lateral stiffness.
The innovative points of the assembly type prestressed hollow slab floor construction supporting system in the embodiment are as follows:
1. the supporting system is a set of system, and comprises a portal scaffold assembly, an adjustable steel supporting top 9, a connecting fastener 10, a connecting rod and other solid components, all the solid components can be used by adopting ready-made industrial products, the vertical adjustability of the supporting height is realized, and the floor slab construction use requirements of buildings with different floor heights are met.
2. This braced system is based on the hollow slab research and development of assembled continuous atress, and this board is only watered after local coincide, and the work is participated in to the board full-section during consequently construction, only needs to bear at both ends, has consequently proposed to set up the supporting scheme of one row of gate-type scaffold 11 respectively at board both ends.
3. The supporting system adopts the supporting scheme of the door-type scaffold 11 and the steel supporting top 9, and is also suitable for construction of common composite floor slabs or other prefabricated floor slabs.
4. The supporting system has the characteristic of quick disassembly, the steel support 9 and the door type scaffold 11 can be disassembled, after the floor slab is installed and the post-cast strip is poured, the door type scaffold 11 and the series of support rods except the steel support 9 (and the beam of the bearing plate) can be completely disassembled and recycled, the steel support 9 bears the load, and the post-cast concrete is disassembled after the strength of the post-cast concrete meets the design requirement.
5. Compared with the traditional single-point supporting system, the supporting system greatly reduces the free length of the vertical top through the door type scaffold 11 so as to provide large-rigidity lateral support, and simultaneously, the two opposite steel supports 9 are connected by the connecting rods so as to increase the rigidity of the whole supporting system, so that the swinging in construction can be prevented.
6. The supporting system has multiple functions of providing ring beam formwork support, providing an operation platform for plastering and filling joints and the like.
7. The pedal height of the supporting system is divided into a plurality of gears so as to meet the height requirements of different uses.
8. This supporting system contains one set of post-cast ring roof beam formwork system to set up its template and support in vaulting pole + angle steel mode, wherein the other components of L shape, in fact the equivalent angle steel, also should the utility model discloses within the right.
The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the present invention, and that any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention may be made without departing from the scope of the present invention.

Claims (6)

1. The utility model provides an assembled hollow slab superstructure construction supporting system of prestressing force, a serial communication port, including a plurality of supporting unit, a plurality of supporting unit connect into a supporting system, every supporting unit includes two gate-type scaffold (11), four steel props up (9), rotatory buckle (10), two supporting beam (13) and ring beam formwork angle steel (15), two gate-type scaffold (11) set up relatively, the both sides of every gate-type scaffold (11) all are fixed with steel props up (9) through rotatory buckle (10), top U type inslot installation supporting beam (13) of both sides steel props up (9), the hollow slab of prestressing force is placed on two supporting beam (13), and both sides support through ring beam formwork angle steel (15).
2. The support system for the construction of the fabricated prestressed hollow slab floor according to claim 1, wherein the door-type scaffold (11) comprises a plurality of scaffold frames (1), pedals (2) and a plurality of tie rods (3), the pedals (2) are fixed on the scaffold frames (1), and the tie rods (3) are installed between two adjacent scaffold frames (1).
3. The construction supporting system for the fabricated prestressed hollow slab floor as claimed in claim 1, wherein said steel supporting top (9) comprises an inner pipe, an outer pipe (4), an adjusting device and a top plate (8), said inner pipe is installed above the outer pipe (4), and the bottom inner sleeve is installed in the outer pipe (4), said inner pipe and the outer pipe (4) are adjusted in length by the adjusting device, and said inner pipe is installed with the top plate (8).
4. The support system for the construction of the assembled prestressed hollow slab floor as claimed in claim 3, wherein said adjusting means comprises an adjusting nut (5), a pin (6) and a handle (7), said adjusting nut (5) is sleeved on the outer tube (4), the pin (6) is inserted into the hole of the inner tube for positioning, and said handle (7) presses the pin (6) for fixing.
5. The fabricated prestressed hollow slab floor construction supporting system according to claim 1, wherein said fabricated prestressed hollow slab floor construction supporting system further comprises a plurality of supporting scaffold bars (14), said supporting scaffold bars (14) are vertically positioned above two portal scaffolds (11), and are connected with two opposite steel supports (9) by means of rotating buckles (10).
6. The fabricated prestressed hollow slab floor construction supporting system according to claim 1, wherein said ring beam formwork angle steel (15) is supported by ring beam side formwork supports (12), said ring beam side formwork supports (12) are fixed on the steel supporting roof (9) and have an included angle with the steel supporting roof (9).
CN202120243037.2U 2021-01-28 2021-01-28 Supporting system for construction of assembled prestressed hollow slab floor Active CN214531897U (en)

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CN202120243037.2U CN214531897U (en) 2021-01-28 2021-01-28 Supporting system for construction of assembled prestressed hollow slab floor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120243037.2U CN214531897U (en) 2021-01-28 2021-01-28 Supporting system for construction of assembled prestressed hollow slab floor

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Publication Number Publication Date
CN214531897U true CN214531897U (en) 2021-10-29

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