CN212562469U - Novel unit truss type concrete frame structure formwork support system - Google Patents

Abstract

The utility model discloses a novel unit truss-like concrete frame structure template supports system, characterized by: the beam bottom supporting part and the floor supporting part are included, wherein the floor supporting part is formed by connecting a spliced truss beam serving as a main edge and a rectangular steel pipe serving as a secondary edge through a pin; the truss beams are hinged and connected by modular unit truss sheets through connecting pins of male and female connectors to form a main edge of a floor slab supporting part; the beam bottom supporting part is arranged along the beam and is formed by splicing beam bottom unit truss sheets through male and female connectors; the beam bottom supporting part is fixedly connected with the supporting inclined rod through the opposite pull rod. The utility model discloses a support system operation is simple and easy, has improved the assembly of engineering construction, the greening for construction speed saves most construction space of cast-in-place floor lower part simultaneously, and the various simultaneous construction of being convenient for can further shorten the engineering total project duration.

Description

Novel unit truss type concrete frame structure formwork support system

Technical Field

The utility model relates to a novel construction formwork support system especially relates to a novel unit truss-like formwork support system, the utility model discloses still relate to this system in cast in situ concrete frame construction based on roof beam, the board template of beam bottom support in as the usage of support system.

Background

The formwork support system used for construction engineering construction in China is mainly a support system of various scaffolds mainly based on a full framing method, the construction of the formwork scaffold is used as one of major hazard sources of a construction site, along with the rapid development of the construction industry in China, the defects of the existing formwork support system are increasingly highlighted, such as large steel consumption in unit area, more construction labor, long construction period, poor working condition of a working surface, difficulty in inspection and acceptance after construction and the like. Safety and quality problems due to the fact that the standers of the scaffold are difficult to guarantee are occasionally caused.

At present, the national widely promotes green buildings, actively advocates green construction, and increases the innovation of new materials, new equipment, new technology and other 'four new' applications and construction technologies for green construction. In the domestic building formwork support system, the adopted full framing scaffold support system still largely continues the old technology, the disadvantages of backward technical level, poor bearing capacity, low building construction efficiency and the like are still not effectively improved, and the development of the formwork industry seriously restricts the rapid development of the building industry.

At present, the construction of the formwork is still technically backward and inefficient in the case of the fiercely and conveniently developed fabricated building, so that the optimized design for assembling the formwork support system is a new development direction of the formwork industry. The novel formwork support system in the industry at present is an aluminum formwork system supported by vertical rods, although the construction speed is high, the system completely replaces wood formworks by aluminum formworks, the manufacturing cost is too high, certain use limitation is realized, and the popularization and development of the system are limited. Therefore, innovation and research and development of a concrete structure wood formwork support system are urgently needed.

In order to solve the problem, the utility model provides a novel unit truss-like concrete frame structure template support system no longer adopts traditional construction process's full hall scaffold frame as concrete beam, the support system of slab form, but uses the breast to support as leading, supports the truss girder simultaneously, and the truss girder adopts the novel support system that the mode of unit truss concatenation is used for supporting the floor template. Through adopting the span advantage of parallel chord truss and carrying out the design of concatenation formula with it for bearing structure is succinct, the dismouting and the turnover use of the engineering of being convenient for, reaches the purpose of green construction, reduction of erection time, reduction engineering cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a novel unit truss-like concrete frame structure template supports system, including unit steel truss piece, connecting pin, safety catch, support down tube and the rectangle steel pipe of different modulus once stupefied, whole support system includes that the bottom of a beam supports and the floor supports two parts.

The beam bottom supporting part is made of steel trusses with different moduli, three steel trusses are connected and fixed to form an integral rear edge beam and are arranged symmetrically on two sides of the beam bottom, a tie rod is used for fixing each steel truss, and supporting oblique rods are used on two sides of each steel truss to increase the stability of the steel truss. The beam bottom supporting part is a basic stressed member of a supporting system, and the upper part of the beam bottom supporting part simultaneously supports the beam and the floor supporting part.

The floor slab supporting part is divided into a main ridge and a secondary ridge, the main ridge is arranged below the secondary ridge, and the secondary ridge is arranged above the secondary ridge and supports the floor slab and the formwork on the upper part together.

The main ridges in the floor slab supporting part are connected through the steel truss sheets at the bottom of the slab through pins, and are spliced into an integral steel truss with corresponding length according to different depths of rooms and different spans of the floor slabs on a construction site, so that the steel truss beams are uniformly hoisted after being formed. The lower construction space is released, and green and efficient construction is facilitated.

The plate bottom unit truss piece is in a herringbone shape and is formed by welding an upper chord, a lower chord, a vertical rod and an inclined rod, the end parts of the upper chord and the lower chord are provided with male and female connectors, and truss connecting pin holes are formed in the connectors. The upper chord and the lower chord of the truss sheet are formed by welding two channel steels (back to back) through a filling plate and a vertical rod, and the end parts of the channel steels are quickly connected through pins and safety pins. The vertical rod is a channel steel with an outward web plate, and the diagonal rod is a channel steel or an I-steel. Battens are filled between two back-to-back channel steel of the upper chord to play a role in fixing the top wood formwork.

The secondary edge in the floor slab supporting part is composed of rectangular steel pipes, and the rectangular steel pipes are lapped in the grooves protruding from the joints of the upper chords of the truss girders and are fixed by connecting pins. The upper parts of the rectangular steel pipes and the upper parts of the upper chords of the truss girders are positioned on the same horizontal plane, so that the floor slab formwork is supported together, and meanwhile, the rectangular steel pipes play a role in connecting and fixing the truss girders.

The main ridges in the floor supporting part are connected by plate bottom unit truss sheets through male and female connectors by pins and safety pins to form single truss girders, each truss girder is connected through a secondary ridge rectangular steel pipe, and lateral supporting transverse clapboards are added at two ends of the truss girders at the head and the tail to serve as construction measures, so that an invariable system is integrally formed, and the lateral stability of the integral floor supporting part is improved.

The beam bottom supporting part is formed by connecting beam bottom unit truss pieces through pin shafts and safety pins through male and female connectors to form single trusses, the whole beam bottom supporting part preferably consists of three trusses, one truss supports the load of a beam in the middle, one truss on each side is used for supporting the load of floor slabs on the two sides of the concrete beam, and the three trusses are fixed through pull rods and inclined supports to guarantee enough strength and stability to bear the concrete load and construction load. All the beam bottom unit truss pieces are spliced into the beam bottom support truss by the beam bottom truss pieces with different heights through modular design according to different heights of the main body layer and different beam heights.

The steel type of the member of the unit truss sheet, the type of the secondary corrugated rectangular steel pipe, the distance of each steel truss beam, the distance of the rectangular steel pipe and the type and the number of the lateral supporting diaphragm plates can be selected after calculation according to stress.

The utility model discloses a formwork support system is after measuring the unwrapping wire, splices in advance, hoists in unison, and equipment such as handling frame, the car that unloads that accessible fitment was used demolishs when the form removal.

The beneficial effects of the utility model reside in that: the utility model discloses a novel unit truss-like concrete frame structure template supports system utilizes the concatenation formula design of truss, is a plurality of unit truss pieces of same specification with a pin steel truss split, forms the truss roof beam through the quick concatenation and is used for supporting the roof template, satisfies cast-in-place concrete frame structure's actual engineering needs. The beam bottom support part among the support system arranges along the roof beam, floor support part fixes the top at beam bottom support part temporarily, bear the structure dead weight and the construction load of upper concrete slab, utilize the superiority of parallel truss span, release lower part construction space, it comes the supporting template to have avoided setting up full hall support shelf, thereby be convenient for green, high-efficient construction, when pouring concrete on the upper strata, a large amount of vacant construction spaces of lower part can be used for interlude to carry out the relevant construction processes on building ground, the turnover of at utmost increase construction team, shorten the total construction period, practice thrift a large amount of construction measure expenses. Meanwhile, the method accords with the national green construction policy of replacing wood with steel, replaces the traditional flitch with the rectangular steel pipe, and the erection of the spliced steel truss with the common steel pipe, improves the turnover rate and improves the construction effect. And the construction period of the formwork is greatly shortened through the assembly construction of the formwork support system. The utility model discloses a support system is easy and simple to operate, has reduced the input of manpower and materials.

Drawings

FIG. 1 is a schematic structural view of the formwork support system of the novel unit truss type concrete frame structure

FIG. 2 is a schematic view of the front vertical plane splitting of the formwork support system of the novel unit truss type concrete frame structure

FIG. 3 is a schematic side elevation view of the formwork support system of the new unit truss concrete frame structure

FIG. 4 is a top view of the formwork support system of the new unit truss concrete frame structure

FIG. 5 is a schematic view of the structure of the modular girder bottom unit truss sheet

FIG. 6 is a schematic structural view of a girder of a plate bottom unit

FIG. 7 is a schematic view showing connection between unit girders

FIG. 8 is a detailed view of the connection between the main girder and the sub-girder rectangular steel pipes in the floor slab supporting part

FIG. 9 is a schematic view of a floor slab support section

FIG. 10 shows pins and shear pins at the unit truss connection

FIG. 11 is a schematic view showing changes in bottom support at different bottom elevations

FIG. 12 is a schematic view of the structure of the bottom support

FIG. 13 is a detailed view of the connection of the upper and lower trusses of the beam bottom supporting part

FIG. 14 shows the hold-down bar and its retention clip in the bottom support section

FIG. 15 is a detailed view of the connection between the diagonal brace and the truss in the bottom support portion

FIG. 16 is a detailed view of connection between inclined struts and ground embedded parts in a beam bottom supporting part

FIG. 17 is a schematic view of the connection structure between the beam bottom supporting part and the floor supporting part

FIG. 18 is a detailed view of the connection between the beam bottom support portion and the floor support portion

FIG. 19 is a schematic view of the construction of the filler plate of FIG. 18

FIG. 20 is a schematic view of the construction of a lateral support diaphragm

FIG. 21 is a detail view of the connection of the lateral support diaphragm at A in FIG. 9

Description of reference numerals: 1. the structure comprises a floor supporting part, 2. a beam bottom supporting part, 3. a modular beam bottom unit truss piece, 4. a plate bottom unit truss piece, 5. a pair of pull rods, 6. a supporting inclined rod, 7. a male-female joint, 8. a secondary-edge rectangular steel pipe, 9. a lateral supporting diaphragm plate, 10. limiting clamping pieces 1 and 11. limiting clamping pieces 2 and 12. a gasket, 13, an embedded part and 14. an inclined rod rotating handle, 15. a fixing bolt, 16. a filling plate in a steel truss and 17. a limiting hole.

Detailed Description

In order to make the technical means, innovative features, objectives and functions realized by the present invention easy to understand, the present invention will be further described.

The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.

Fig. 1-21 show a novel formwork support system, namely a novel unit truss type concrete frame structure formwork support system, which comprises a floor support part (1) and a beam bottom support part (2), wherein the two parts are formed by splicing modular unit trusses to meet the requirements of different floor heights and beam heights (fig. 11). The splicing mode between the unit truss sheets is that the male and female joints (7) are connected through pins and safety pins (figure 9). The connection mode is convenient and fast, and the safety is easy to guarantee.

The floor slab supporting part (1) consists of a main corrugated bottom supporting truss and a secondary corrugated rectangular steel pipe, and the main corrugated bottom supporting truss and the secondary corrugated rectangular steel pipe are fixedly connected through a pin and a safety pin (figure 8). The floor slab supporting part is formed by splicing plate bottom unit truss sheets (shown in figure 6) into truss beams (shown in figure 7), wherein each truss beam is connected through rectangular steel pipes serving as secondary ridges (shown in figure 8), so that the top elevation of each truss is the same as that of the rectangular steel pipes serving as the secondary ridges, and an upper floor slab template is supported together. At the same time, lateral support transverse partition plates (fig. 19) are added at the end parts of two trusses at the first two sides of the floor support part, and as a structural measure, the whole floor support system is made into an invariable system, so that the stability of the whole support system is increased (fig. 9). The whole floor slab supporting part utilizes the advantages of the truss, the lower part construction space is released, the defect of the traditional full framing method is changed, and the assembled formwork is matched for construction, so that the construction is more efficient and convenient while green construction is carried out.

The beam bottom supporting part (2) is formed by splicing beam bottom unit trusses (figure 5) with large size and specification, and is still temporarily spliced and fixed by adopting male and female connectors (7) through pins and safety pins (figure 9). In order to increase the overall stability, three trusses are generally arranged along the direction of the beam, the middle truss supports a template at the bottom of the beam, and the two trusses at the two sides respectively support a main corrugated bottom truss beam of a floor slab at the two sides of the concrete beam (fig. 2). The trusses of the beam bottom supporting part are connected into a whole by a pair of tie rods (5) (figure 11). Meanwhile, the two sides use the supporting inclined rods (6) as lateral supporting parts, so that the overall stability of the beam bottom supporting part is improved. The opposite pull rods (5, 14) and the supporting diagonal rods (6) are detachable parts, the opposite pull rods and the supporting diagonal rods are fixed with bolt holes reserved on node plates in the unit truss (5) through fixing clamping pieces (10, 11) (as shown in figures 12 and 15), the other ends of the supporting diagonal rods (6) are connected with embedded parts on the ground, and the connection tightness degree is adjustable (figure 16). At present, the adjustable support diagonal rod as a diagonal support is widely applied to practical engineering applications such as aluminum templates, fabricated buildings and the like, and has mature technology and various varieties.

The floor supporting part (1) and the beam bottom supporting part (2) are integrally hoisted to finish final construction, a limiting hole (17) is reserved between the bottom of a truss beam in the floor supporting part and a filling plate (16, 18 and 19) of a beam bottom supporting truss, and the floor supporting part and the filling plate are fixed through bolts (17 and 18).

The novel unit truss type concrete frame structure formwork supporting system adopts an assembly type formwork construction method, and the concrete construction method comprises the following steps:

step one, measuring and setting out the central line and the side line of the main structure beam;

step two, selecting beam bottom unit truss pieces (figure 5) with corresponding heights according to different building layer heights and different beam heights, reasonably dividing according to the length of a beam during construction, assembling beam bottom supporting parts, splicing unit trusses through male and female heads by using pins and safety pins, and connecting and fixing each truss into a whole by using a pair of pull rods;

and step three, hoisting the beam bottom support truss in place by using a tower crane, and adjusting the installation position of the beam bottom support truss at any time by using measurement paying-off as a standard by constructors during hoisting. After the truss is in place, a supporting diagonal rod is used for carrying out three-point supporting, connecting and fixing (as shown in figure 12) through a ground embedded part and a counter pull rod part of the truss, and a tightening device is adjusted to enable the whole truss to be fastened;

and step four, selecting a corresponding number of unit truss sheets (figure 6) according to the span of the floor slab through the difference of the depths of the rooms, splicing the unit trusses through male and female heads by using pins and safety pins to form a complete truss (figure 7), connecting rectangular steel pipes (8) serving as secondary ridges among the trusses through the pins and the safety pins, enabling the top marks of the trusses to be the same, and enabling the upper surfaces of the trusses to be flush (figure 8). And finally, installing lateral supporting transverse clapboards between the trusses at the two ends (figure 20), aligning the limiting holes of the transverse clapboards and the limiting holes of the web plates of the vertical rods of the trusses, and fixing the transverse clapboards and the web plates by pins or bolts (figure 21). Forming a complete floor support section (fig. 9);

and fifthly, hoisting the tower crane in place, adjusting the size of each truss at any time during hoisting, positioning each truss at a node of the truss at the bottom of the beam (figure 3), aligning a limiting hole (17) on the flange of the lower chord groove steel with a limiting hole of a lower filling plate (16, figure 18 and figure 19), and fixing the truss by using a bolt (figure 17 and figure 18). And finishing the assembly construction of the whole novel truss type concrete frame structure formwork support system. Then, carrying out construction of a wood formwork project;

and step six, during dismantling, the novel formwork support system can be gradually dismantled from top to bottom through unloading equipment such as an unloading vehicle and an unloading frame, the upper layer is hung at the construction unloading platform by a tower crane, and construction is repeatedly carried out.

The above embodiments are merely illustrative of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims (8)

1. The utility model provides a novel unit truss-like concrete frame structure template supports system, characterized by: the beam bottom supporting part (2) and the floor supporting part (1) are included, wherein the floor supporting part (1) is formed by connecting a splicing truss beam serving as a main edge and a rectangular steel pipe serving as a secondary edge through a pin; the truss girder is formed by hinging and connecting plate bottom unit truss sheets (4) designed in an modularized way through connecting pins of male and female connectors (7) to form a main edge of a floor slab supporting part; the beam bottom supporting part (2) is arranged along the beam and is formed by splicing beam bottom unit truss sheets (3) through male and female connectors; the beam bottom supporting part (2) is fixedly connected with the supporting diagonal rod (6) through the opposite pull rod (5).

2. The novel cell truss concrete frame structure formwork support system of claim 1, wherein: the beam bottom supporting part at the lower part of the supporting system is arranged along the beam and bears the load of the beam and the floor slab.

3. The novel cell truss concrete frame structure formwork support system of claim 1, wherein: the floor slab supporting part comprises a unit splicing type truss girder as a main edge and a rectangular steel pipe as a secondary edge.

4. The novel cell truss concrete frame structure formwork support system of claim 3, wherein: and each truss of the unit splicing type truss girder is erected on the upper part of a node of the steel truss at the beam bottom supporting part.

5. The novel cell truss concrete frame structure formwork support system of claim 3, wherein: the unit splicing type truss girder is formed by hinging and splicing a plurality of modular unit steel truss sheets, and the connection form of the splicing part is that a male joint and a female joint are hinged through a pin shaft.

6. The novel cell truss concrete frame structure formwork support system of claim 5, wherein: the section forms of the upper chord member and the lower chord member of the unit steel truss are solid web type or lattice type, back-to-back double-channel steel welding is adopted, and the channel steel is selected from No. 5 or higher type.

7. The novel cell truss concrete frame structure formwork support system of claim 3, wherein: the rectangular steel pipe is used as a secondary edge of a floor slab supporting part, the rectangular steel pipe is vertically erected in a groove protruding from a chord connecting part on a truss girder, the top elevation of the rectangular steel pipe is the same as that of the unit splicing type truss girder, the rectangular steel pipe is fixed through a pin shaft, or the rectangular steel pipe is fixed at the top of a chord node on the steel truss girder through a clamping piece, and the rectangular steel pipe is similar to a steel roof truss form.

8. The novel cell truss concrete frame structure formwork support system of claim 1, wherein: the top surface elevation of the floor supporting part is the bottom elevation of the concrete floor, the top surface elevation of the middle truss of the beam bottom supporting part is the bottom elevation of the concrete beam, the two sides of the middle truss are used for supporting a plurality of trusses of the plate bottom truss beam, and the size elevation of the truss can be fixed.

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