Double-layer plate supporting system for polycrystalline silicon reduction plant

Abstract

The utility model provides a double-layer plate supporting system for a polycrystalline silicon reduction plant, and relates to the technical field of double-layer floor slab construction. The molds are arranged at the top of the first floor at intervals; each mold is composed of a bottom plate and a plurality of side plates, the side plates are arranged on a plurality of outer wall faces of the bottom plate respectively, the adjacent side wall faces of the adjacent side plates are fixedly connected, and an uncovered box body with an opening is formed between the side plates and the bottom plate; the second floor slab is arranged on the outer top of the bottom plate in each mold; gaps between the adjacent molds are filled with the dense rib beams; the connecting plates are connected with the first floor and the second floor respectively; wherein each mold is erected on the top of the first floor slab in the direction that an opening faces the first floor slab. According to the supporting system, the construction period can be greatly shortened, and the construction cost of a project is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to double floor construction technical field, concretely relates to a double floor support system for polysilicon reduction plant. BACKGROUND

[0002] At present in the polysilicon industry, the double floor support system of the reduction plant mainly adopts the traditional steel pipe plus formwork to reinforce and support, that is, first, a support system is set up using steel pipes and fasteners, then formwork is installed and reinforced, and all the steel pipes and formwork in the interlayer of the system cannot be removed after construction is completed. This traditional construction process not only leads to a longer construction period, but also causes great waste of materials, resulting in high construction costs. In addition, if the fasteners are not fastened in place during the formwork support process, it is very likely to cause the floor to sink and other serious quality problems, which not only affects the stability of the local structure, but also causes irreparable adverse effects on the quality of the entire project, and may even cause safety hazards, leading to increased maintenance costs and delays in project progress. SUMMARY

[0003] The utility model provides a double floor support system for polysilicon reduction plant, which can greatly shorten the construction period and save the construction cost of the project, to solve the problems of long construction period, formwork that cannot be removed after installation, high construction cost and safety hazards when the steel pipe, fastener and formwork are used to build the double floor support system.

[0004] The utility model adopts the technical scheme of:

[0005] A double floor support system for polysilicon reduction plant is provided, comprising:

[0006] a first floor; a plurality of molds, each mold being spaced apart and arranged on the top of the first floor; each mold being composed of a bottom plate and a plurality of side plates, each side plate being arranged on the outer wall surface of the bottom plate, the adjacent side wall surfaces of adjacent side plates being fixedly connected, and the plurality of side plates and the bottom plate forming a box body without a cover and having an opening; a second floor arranged on the outer top of the bottom plate in each mold; a dense rib beam filled in the gap between adjacent molds and connected with the first floor and the second floor; wherein each mold is arranged on the top of the first floor with the opening facing the direction of the first floor.

[0007] Optionally, a support ring fixedly connected with the outer wall surface of the plurality of side plates is arranged on the outer wall surface of each mold in a circumferential direction.

[0008] Optionally, the end surface between the bottom plate and the plurality of side plates in each mold and facing the direction of the second floor is a rounded corner structure.

[0009] Optionally, the angle between the connection of the plurality of side plates and the bottom plate in each mold and the first floor direction is 90-95 degrees.

[0010] Optionally, a groove is formed on the outer wall surface of the plurality of side plates in each mold.

[0011] Optionally, the distance between adjacent molds is 350-500 mm.

[0012] Optionally, the thickness of the bottom plate and the plurality of side plates in each mold is 1.2-1.5 cm.

[0013] Optionally, each mold is composed of a PVC bottom plate and a plurality of PVC side plates, and the PVC bottom plate and the plurality of PVC side plates are integrally formed.

[0014] The beneficial effects of the utility model are:

[0015] First, the first floor is poured by reinforced concrete, then each mold is erected on the outer top of the first floor, the mold is composed of a bottom plate and a plurality of side plates, the plurality of side plates are arranged in the horizontal direction along the plurality of outer wall surfaces of the bottom plate, so that the bottom plate and the plurality of side plates form a box body without cover and with opening, when the box body is erected on the outer top of the first floor, the opening of the box body itself is directed to the outer top of the first floor, that is, the box body covers the outer top of the first floor, then the gap between adjacent molds is filled and a dense rib beam is formed, then the second floor is poured on the top of the dense rib beam and the top of each mold, and finally a double-layer floor support system is formed. Compared with the traditional construction process using steel pipes and fasteners for erection, the mold is prefabricated in advance, and the mold is fastened to the outer top of the first floor for erection, the overall construction cost is reduced, and the construction time is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Fig. 1 It is a front view structural schematic diagram of a double-layer support system for a polysilicon reduction plant;

[0018] Fig. 2 It is a front view structural schematic diagram of a mold;

[0019] Fig. 3A side view of the structure of the mold is shown.

[0020] Reference signs:

[0021] 1 - first floor;

[0022] 2 - mold, 20 - bottom plate, 21 - side plate, 22 - support ring, 23 - groove;

[0023] 3 - ribbed beam;

[0024] 4 - second floor. DETAILED DESCRIPTION

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the present application.

[0027] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0028] EMBODIMENT

[0029] Please refer to Figs. 1-3 The embodiment provides a double-layer plate support system for a polysilicon reduction plant, which comprises a first floor 1, the first floor 1 is a concrete floor, which is poured by reinforced concrete, a plurality of molds 2 are erected on the outer top of the first floor 1, the mold 2 is composed of a bottom plate 20 and at least four side plates 21, specifically, one end face of each side plate 21 corresponds to the outer wall surface of the bottom plate 20 in the horizontal direction and is connected, the bottom plate 20 and the four side plates 21 are integrally formed, the four side plates 21 and the bottom plate 20 form a box body without cover and with an opening, and the opening of the box body faces the outer top of the first floor 1 for erection.

[0030] A support ring 22 is arranged on the outer wall surface of each mold 2 in the horizontal direction and circumferentially, the support ring 22 is fixedly connected with the outer wall surface of the plurality of side plates 21 in the mold 2, and is an integral molding structure, when the opening of the mold 2 faces the outer top of the first floor slab 1, at this time, the support ring 22 on the outer wall surface of the mold 2 can play an auxiliary supporting effect, and can share the pressure applied to the mold 2 when filling the dense rib beam 3 and the second floor slab 4, thereby improving the supporting stability of the double-layer floor slab.

[0031] The connecting portion between the bottom plate 20 and the plurality of side plates 21 in each mold 2 is provided with a rounded corner structure, specifically, the connecting portion end surface on the side facing the second floor slab 4 is provided with a rounded corner structure when the bottom plate 20 and the plurality of side plates 21 are connected, the rounded corner structure can reduce the abrasion caused to itself or other instruments or workers during the production and handling of the mold 2. In addition, the included angle of the connecting portion between the bottom plate 20 and the plurality of side plates 21 on the side facing the inside of the mold 2 is arranged to be in the range of 90°-95°, according to the “Concrete Structure Engineering Construction Specification” (GB50666-2011), a right angle (90°) is the reference angle of the form joint, which can ensure the tightness of the joint and simplify the construction process, and when the included angle is increased to form an obtuse angle, the concrete flow resistance in the obtuse angle area is reduced, avoiding the generation of bubbles or honeycomb surface at the right angle due to slurry accumulation, and the obtuse angle design makes the formwork stress more uniform, avoiding local cracking caused by repeated form removal at the right angle. In addition, the obtuse angle formwork has smaller prying resistance when removed, and is especially suitable for molds 2 made of brittle materials such as glass steel or PVC.

[0032] Grooves 23 are formed on the outer wall surface of the plurality of side plates 21 in the mold 2, when the mold 2 is placed on the first floor slab 1 and there is a large deviation in the position, the worker can put his hand into the groove 23 to adjust the position of the mold 2, thereby avoiding a large positional deviation of the mold 2 on the outer top of the first floor slab 1, and preventing the gap between adjacent molds 2 from changing and affecting the use effect of the formwork in the double-layer floor slab.

[0033] In the plurality of molds 2 arranged on the outer top of the first floor slab 1, the bottom plate 20 and the plurality of side plates 21 are all made of PVC material, and the thickness of the bottom plate 20 and the plurality of side plates 21 is between 1.2 cm and 1.5 cm, which meets the requirements of the Concrete Structure Engineering Construction Specification (GB50666-2011), and the formwork in this thickness range can effectively resist the lateral pressure during concrete pouring in terms of carrying capacity, avoiding uneven floor slab thickness or uneven surface caused by formwork deformation, especially in double-layer floor slab, the upper and lower support loads need to be transmitted through the formwork, and the bending strength (about 15 MPa) of the 1.5 cm thick formwork can effectively disperse the concentrated load and avoid local crushing; in terms of construction efficiency, the 1.2 cm to 1.5 cm thick formwork has high surface flatness and tight joints, which can reduce the risk of slurry leakage, ensure the smoothness of the floor bottom, reduce the cost of later plastering and repairing (save about 10% to 15% of the finishing process), in addition, the formwork in this thickness range can be reused 8 to 12 times (formwork thinner than 1.0 cm can only be used 3 to 5 times) under reasonable maintenance (such as removing the formwork after the concrete strength is greater than or equal to 75% of the design strength), which significantly reduces the formwork cost; in terms of economy, compared with thicker formwork (such as 2.0 cm or more), the 1.2 cm to 1.5 cm formwork reduces the material cost by 20% to 30% while meeting the carrying capacity requirements, and is lighter (about 10 kg / m2), which is convenient for transportation and installation. In addition, the bottom plate 20 and the plurality of side plates 21 in the mold 2 are all made of PVC material, PVC formwork uses polyvinyl chloride as the main raw material, the production energy consumption is only 1 / 5 of steel and 1 / 8 of aluminum, and it can be recycled, the PVC mold 2 can be completely recycled, and there is no pollution, dust and noise during construction, and no white pollution after disposal. Compared with traditional wooden formwork (turnover 3-5 times) or steel formwork (rust prevention and maintenance are required), PVC formwork can be reused more than 50 times, which greatly reduces resource waste; the single-use cost of PVC formwork is only 1 / 3 to 1 / 2 of wooden formwork, and frequent replacement is not required.

[0034] In the multiple molds 2 set on the top of the first floor 1, the distance between the outer wall surfaces of adjacent molds 2 is between 350mm and 500mm, which meets the requirements of the Concrete Structure Engineering Construction Specification (GB50666-2011), balances the stress distribution in the aspect of structural performance optimization, avoids local stress concentration, and the gap is too small to cause the redundancy of the support system and increase the material cost; if the gap is too large, the formwork may sag due to the increase of the span. The gap of 300mm to 500mm can reduce the number of support points and maintain the stability of the system through the rigidity of the formwork itself (such as the bending strength of 1.5cm thick plywood ≥15MPa); in terms of construction efficiency, the expansion of the gap can reduce the consumption of part of the materials, in addition, the larger gap can also reduce the number of support nodes, the worker operation space is more spacious, and the formwork installation efficiency is improved by about 25%; in terms of the improvement of the concrete forming quality, the gap is controlled within 500mm to ensure the close alignment of the formwork joints (especially with the use of self-locking connectors), reduce the probability of concrete slurry leakage from the joints, avoid the appearance of "misaligned" or honeycomb surface on the floor bottom, and save the later repair cost by about 10% to 15%.

[0035] The working principle of the utility model is: first, according to the received relevant drawing size, design the PVC mold 2 needed to be used, then after pouring the first floor 1 through reinforced concrete, the multiple prefabricated molds 2 are set on the outer top of the first floor 1 with the opening facing the direction of the first floor 1, after the multiple molds 2 are set, then start filling reinforced concrete between the gaps of adjacent molds 2, and gradually pour on the outer top of the formwork, until the dense ribbed beam 3 is formed between the adjacent molds 2, and the second floor 4 is formed on the outer top of the formwork, then the pouring is completed, compared with the traditional construction process, the construction cost is reduced, and the time consumed by the construction is greatly shortened.

[0036] Finally, it should be pointed out that: the above is only the preferred embodiment of the present application and is not used to limit the present application, for those skilled in the art, the present application can have various changes and variations, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A double-deck slab support system for a polysilicon reduction plant, characterized in that, The utility model relates to a kind of prefabricated housing construction method, including: First floor; Multiple molds, each described mold is spaced apart between the top of the first floor;Each described mold is made of bottom plate and multiple side plates, each described side plate is respectively arranged on the multiple outer wall surfaces of the bottom plate, the adjacent side wall surface between adjacent described side plates is fixedly connected, multiple described side plates and the bottom plate between it is composed of box body without cover and with opening; Second floor, which is provided on the outer top of the bottom plate in each mold;Ribbed beam is filled in the gap between adjacent molds;And respectively with the first floor and the second floor is connected;Wherein, each mold is erected on the top of the first floor with the opening direction towards the first floor.

2. The double-slab support system for a polysilicon reduction plant of claim 1, wherein, Each described mold is circumferentially provided with support ring fixedly connected with the outer wall surface of multiple side plates on the outer wall surface.

3. The double-slab support system for a polysilicon reduction plant of claim 2, wherein, The end surface between the bottom plate and the multiple side plates in each described mold and towards the second floor direction is rounded corner structure.

4. The double-slab support system for a polysilicon reduction plant of claim 3, wherein, The included angle between the multiple side plates and the bottom plate in each described mold and towards the first floor direction is 90~95 °.

5. The double-slab support system for a polysilicon reduction plant of claim 4, wherein, Multiple side plates in each described mold are provided with grooves on the outer wall surface.

6. The double-slab support system for a polysilicon reduction plant of claim 5, wherein, The distance between adjacent described molds is 350~500mm.

7. The double-slab support system for a polysilicon reduction plant of claim 6, wherein, The thickness of the bottom plate and the multiple side plates in each described mold is 1.2~1.5cm.

8. The double-slab support system for a polysilicon reduction plant of claim 7, wherein, Each described mold is made of PVC bottom plate and multiple PVC side plates, and the PVC bottom plate and the multiple PVC side plates are integrally formed.

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