Opposite-pull screw and unilateral formwork system

Abstract

The utility model relates to the technical field of lower room building construction, and discloses a split screw and a unilateral formwork system. The opposite-pull screw comprises a rod body, the rod body is provided with a steel bar planting section, a fat groove section and an outer wall section which are sequentially arranged, the first end of the steel bar planting section is fixedly connected with a steel structure of the support pile, the second end of the steel bar planting section is fixedly connected with the first end of the fat groove section, and the second end of the fat groove section is detachably connected with the first end of the outer wall section; the water stopping structure is arranged on the fertilizer groove section in a sleeving mode, and the water stopping structure can expand when encountering water so as to seal the penetrating waterproof layer. The water stopping structure is arranged on the fertilizer groove section in a sleeving mode, the integrity of the waterproof layer at the key position is guaranteed through sealing of the fertilizer groove section, and therefore the reliability of the whole waterproof system is improved. When meeting water, the water stop structure can rapidly expand and tightly seal the penetrating waterproof layer, water permeation is effectively prevented, the water stop structure can provide reliable waterproof protection for a building, and the service life of the building is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of basement building construction, and particularly relates to a pair of pull screw and unilateral formwork system. BACKGROUND

[0002] With the development of the construction industry, the functionality and importance of basements have been greatly improved. A basement is no longer just a place for storing sundries. It can be built into a home theater, a study, a wine cellar or a gymnasium, etc. These uses need to be based on a dry and non-leakage environment. Without good waterproof measures, expensive audio-visual equipment, valuable books and delicate fitness equipment can all be damaged by water. Moreover, a basement is located underground and surrounded by soil and groundwater. The soil moisture will exert a seepage pressure on its walls and floor, and the fluctuation of the groundwater level also threatens the dry environment of the basement.

[0003] At present, in the cast-in-situ concrete construction of the outer wall of a building basement, a whole wall-penetrating screw is generally used to set up and support the formwork. This pair of pull screw is widely used in engineering practice. However, this pair of pull screw only sets a water stop piece in the concrete filling area. However, due to the existence of the through hole at the connection between the pair of pull screw and the wall, the waterproof effect is not good, and water leakage is likely to occur. SUMMARY

[0004] Therefore, the utility model provides a pair of pull screw to solve the problem of poor waterproof effect of the pair of pull screw in the prior art.

[0005] In a first aspect, the utility model provides a pair of pull screw, which comprises:

[0006] a rod body having a planted bar section, a fat groove section and an outer wall section arranged in sequence, a first end of the planted bar section being fixedly connected with a steel structure of a support pile, a second end of the planted bar section being fixedly connected with a first end of the fat groove section, a second end of the fat groove section being detachably connected with a first end of the outer wall section;

[0007] a water stop structure, which is sleeved on the fat groove section and can swell when meeting water to seal the penetrated waterproof layer.

[0008] Optionally, the water stop structure comprises an expansion water stop ring sleeved on the fat groove section and water stop glue arranged in the gap between the expansion water stop ring and the fat groove section.

[0009] Optionally, the planted bar section is a steel bar.

[0010] Optionally, the first end of the planted bar section is fixedly connected with the steel structure of the support pile by welding, and the second end of the planted bar section is fixedly connected with the first end of the fat groove section by welding.

[0011] Optionally, the second end of the trough section and the first end of the outer wall section are provided with threads respectively; and the system further comprises a threaded connecting piece adapted to threadedly connect the second end of the trough section and the first end of the outer wall section.

[0012] Optionally, the system further comprises:

[0013] A water stop piece is sleeved on the trough section and / or the outer wall section.

[0014] Advantages

[0015] In an optional embodiment, the anchor bolt comprises a rod body having a steel bar embedding section, a trough section and an outer wall section arranged in sequence, the first end of the steel bar embedding section is fixedly connected with the steel structure of the support pile, the second end of the steel bar embedding section is fixedly connected with the first end of the trough section, and the second end of the trough section is detachably connected with the first end of the outer wall section; and a water stop structure is sleeved on the trough section, and the water stop structure can swell when encountering water to seal the penetrated waterproof layer. The water stop structure is sleeved on the trough section, and the sealing of the trough section ensures the integrity of the waterproof layer at the key position, thereby improving the reliability of the entire waterproof system. When encountering water, the water stop structure can swell rapidly to tightly seal the penetrated waterproof layer, effectively preventing water penetration, and the water stop structure can provide reliable waterproof protection for the building, reduce the risk of leakage, and prolong the service life of the building.

[0016] In a second aspect, the utility model also provides a unilateral formwork system, comprising: the anchor bolt as described above, and a formwork and a mounting and fixing assembly, one end of the anchor bolt is arranged in the interior of the support pile, the other end is exposed to the formwork and is fixed through the mounting and fixing assembly, the formwork and the support pile are sequentially filled with a trough layer, a waterproof layer and an outer wall layer in the interval, the trough layer is arranged between the support pile and the outer wall layer, and the waterproof layer is arranged between the trough layer and the outer wall layer.

[0017] Optionally, the water stop structure is attached to the surface of the waterproof layer facing the outer wall layer.

[0018] Advantages

[0019] Compared with the traditional pouring mode using a pre-buried anchor bolt, the pre-buried anchor bolt needs to be accurately positioned and fixed before concrete pouring, and once the position is determined, it is difficult to change. The anchor bolt can be positioned, drilled and installed according to actual construction needs after the completion of the support pile and other structures, and the construction is more flexible and can adapt to different engineering conditions and design changes. The anchor bolt has the advantages of flexible construction, high construction flexibility and reduced construction difficulty.

[0020] In a third aspect, the utility model also provides a construction method of the unilateral formwork system, which comprises the following steps:

[0021] The first end of the anchoring segment is fixedly connected with the steel structure of the support pile;

[0022] The second end of the anchoring segment is fixedly connected with the first end of the fertilizer groove segment;

[0023] The formwork is erected at the second end of the fertilizer groove segment and is fixed through the installation and fixing assembly, and the fertilizer groove layer is formed by filling concrete between the formwork and the support pile;

[0024] After the installation and fixing assembly and the formwork are removed in sequence, the second end of the fertilizer groove segment is connected with the first end of the outer wall segment;

[0025] A waterproof layer is arranged outside the fertilizer groove layer, and a water stop structure is arranged at the position where the tension rod penetrates the waterproof layer;

[0026] The formwork is erected at the second end of the outer wall segment in sequence and is fixed through the installation and fixing assembly, and the outer wall layer is formed by filling concrete between the formwork and the waterproof layer;

[0027] After the installation and fixing assembly and the formwork are removed in sequence, the construction is completed.

[0028] Optionally, the method further comprises the steps of arranging a water stop piece in the fertilizer groove segment and the outer wall segment respectively. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative labor.

[0030] Fig. 1 It is a structure schematic view of the tension rod of the utility model embodiment;

[0031] Fig. 2 It is a structure schematic view of the unilateral formwork system of the utility model embodiment.

[0032] EXPLANATION OF REFERENCE NUMERALS:

[0033] 11, anchoring segment; 12, fertilizer groove segment; 13, outer wall segment; 14, expansion water stop ring; 15, threaded connecting piece; 16, water stop piece;

[0034] 2, formwork; 31, keel; 32, steel pipe; 33, clamping piece;

[0035] 41, support pile; 42, fat groove layer; 43, outer wall layer; 44, waterproof layer. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] The embodiments of the present application will be described below with reference to the drawings. Figs. 1-2

[0038] According to the embodiments of the present application, on the one hand, a counter-pull screw rod is provided, comprising:

[0039] The rod body has a planted bar section 11, a fat groove section 12 and an outer wall section 13 arranged in sequence, the first end of the planted bar section 11 is fixedly connected with the steel structure of the support pile 41, the second end of the planted bar section 11 is fixedly connected with the first end of the fat groove section 12, and the second end of the fat groove section 12 is detachably connected with the first end of the outer wall section 13.

[0040] The water stop structure is sleeved on the fat groove section 12, and the water stop structure can swell when meeting water to seal the penetrated waterproof layer 44.

[0041] It is easily understood that the lengths of the planted bar section 11, the fat groove section 12 and the outer wall section 13 do not have fixed standard values, and the lengths thereof are determined according to specific engineering requirements, structural design, construction conditions and other factors. Herein, the specific lengths are not limited, and can be calculated according to actual construction needs. The planted bar section 11, the fat groove section 12 and the outer wall section 13 are usually made of high-strength steel bars.

[0042] It should be noted that the water stop structure is refined from high-molecular inorganic water-absorbing and swelling materials and rubber. When meeting water, these materials can quickly absorb water and swell to fill the gap between the concrete and the counter-pull bolt, thereby achieving the effect of stopping water.

[0043] ​The tensioning screw provided by the embodiment of the present utility model includes a rod body, which has a rebar segment 11, a fertilizer trough segment 12 and an outer wall segment 13 arranged in sequence, the first end of the rebar segment 11 is fixedly connected to the steel structure of the support pile 41, the second end of the rebar segment 11 is fixedly connected to the first end of the fertilizer trough segment 12, and the second end of the fertilizer trough segment 12 is detachably connected to the first end of the outer wall segment 13; a water-stop structure, the water-stop structure is sleeved on the fertilizer trough segment 12, and the water-stop structure can swell when exposed to water to seal the waterproof layer 44 that penetrates. The water-stop structure is sleeved on the fertilizer trough segment 12, and by sealing the fertilizer trough segment 12, the integrity of the waterproof layer 44 at key positions is ensured, thereby improving the reliability of the entire waterproof system. When encountering water, the water-stop structure can expand rapidly, tightly seal the waterproof layer 44 that penetrates, and effectively prevent water from penetrating. The water-stop structure can provide reliable waterproof protection for the building, reduce the risk of leakage, and extend the service life of the building.

[0044] Furthermore, the water-stop structure includes an expansion water-stop ring 14 sleeved on the fat trough section 12 and a water-stop glue provided in the gap between the expansion water-stop ring 14 and the fat trough section 12 .

[0045] As can be easily understood, the expansion ring 14 expands upon contact with water, effectively filling the gap between the concrete and the tensioning screws, forming the first line of defense against water leakage. The water-stop adhesive can then be used to further prevent water penetration if the expansion ring 14 fails to fully seal. The combination of the two provides a dual water-stopping guarantee, significantly enhancing the water-stopping effect.

[0046] In another optional embodiment, a water-stop strip that swells when exposed to water may be used as the water-stop structure.

[0047] In another alternative embodiment, a sealant and rubber pad can be used as the waterstop structure. The sealant fills the gaps and provides a seal, while the rubber pad provides increased sealing and cushioning. However, the sealant and rubber pad are not as effective as the expansion waterstop ring 14 in terms of waterproofing. Therefore, this combination may be used in projects where cost control is critical but waterproofing requirements are relatively low.

[0048] Furthermore, the embedded reinforcement section 11 is a steel bar.

[0049] As can be readily understood, the steel bars possess high tensile and compressive strengths, allowing them to be securely connected to the steel structure of the support piles 41, ensuring that the tie rods will not easily break or loosen when subjected to various external forces. This connection remains stable even in complex engineering environments, such as those subjected to lateral pressure during concrete pouring and earthquakes.

[0050] Furthermore, the first end of the rebar segment 11 is fixedly connected to the steel structure of the support pile 41 by welding, and the second end of the rebar segment 11 is fixedly connected to the first end of the fertilizer trough segment 12 by welding.

[0051] It is easy to understand that the welding can form a firm connection between the anchorage segment 11 and the steel structure of the support pile 41 and the trough segment 12, with high connection strength. It can withstand large tensile force, pressure and shear force and other external forces, ensuring that the tension rod does not loosen or break at the connection part during use, ensuring the stability and safety of the structure.

[0052] Further, the second end of the trough segment 12 and the first end of the outer wall segment 13 are respectively provided with threads; and the single-sided formwork system further comprises a threaded connecting piece 15 adapted to threadedly connect the second end of the trough segment 12 and the first end of the outer wall segment 13.

[0053] It is easy to understand that the threaded connection can be adjusted and fastened according to actual needs, adapting to different construction conditions and requirements. For example, when encountering changes in concrete thickness or construction errors, the length of the tension rod can be adjusted by rotating the threaded connecting piece 15 to ensure that the tension rod can always play an effective supporting and fixing role.

[0054] Further, the single-sided formwork system further comprises:

[0055] The water stop piece 16 is sleeved on the trough segment 12.

[0056] Further, the water stop piece 16 is sleeved on the outer wall segment 13.

[0057] It should be noted that the position and number of the water stop piece 16 can be set according to actual needs, and generally has a certain curvature, such as an arc or a groove, to ensure that water seepage does not directly seep out in the horizontal direction, improving the water stop effect.

[0058] According to the embodiments of the utility model, on the other hand, a single-sided formwork system is also provided, which comprises: the tension rod as above, and a formwork 2 and a mounting and fixing assembly, one end of the tension rod is arranged inside the support pile 41, the other end is exposed to the formwork 2 and is fixed through the mounting and fixing assembly, the formwork 2 is sequentially filled with a trough layer 42, a waterproof layer 44 and an outer wall layer 43 in the interval between the support pile 41, the trough layer 42 is arranged between the support pile 41 and the outer wall layer 43, and the waterproof layer 44 is arranged between the trough layer 42 and the outer wall layer 43.

[0059] It should be noted that when pouring the trough layer 42 and the outer wall layer 43, a keel 31 needs to be arranged outside the formwork 2, the keel 31 is fixed through a steel pipe 32, and the steel pipe 32 is fixed through a clamping piece 33 arranged on the tension rod, to ensure the fixation of the formwork 2. The keel 31, the steel pipe 32 and the clamping piece 33 form the mounting and fixing assembly.

[0060] It is easy to understand that the keel 31 plays a major role in supporting and strengthening in the unilateral formwork system. The keel 31 is usually made of wood or metal materials, which has certain strength and stiffness, and can withstand the lateral pressure during concrete pouring. Here, the specific material of the keel 31 is not limited, as long as it can provide stable support. When installing the keel 31, the position of the keel 31 needs to be adjusted to ensure that it is evenly distributed on the formwork 2, so as to ensure that each part of the formwork 2 can be effectively supported. Then, the keel 31 is fixed on the formwork 2 through the cooperation of the clamping piece 33 and the steel pipe 32, so as to ensure that the keel 31 will not be displaced during construction.

[0061] It is easy to understand that the steel pipe 32 is used to enhance the stability and strength of the entire fixing system. The steel pipe 32 can be of different diameters and wall thicknesses, which can be selected according to the actual needs of the project. In actual construction, the steel pipe 32 is placed transversely or longitudinally on the outside of the keel 31, forming a cross-bracing structure with the keel 31. The steel pipe 32 and the keel 31 are connected together by using the clamping piece 33, so that they are tightly combined. In this way, the lateral pressure borne by the formwork 2 can be effectively dispersed, and the overall stability of the fixing system can be improved.

[0062] It is easy to understand that the clamping piece 33 plays a key locking role in the process of fixing the formwork 2. The clamping piece 33 is usually made of metal and can firmly clamp the tensioning screw and other fixing components. When installing the fixing components, the clamping piece 33 is sleeved on the tensioning screw and adjusted to the appropriate position. Then, by tightening the nut or other ways, the clamping piece 33 tightly presses the components such as the formwork 2, the keel 31 and the steel pipe 32, so as to lock the entire fixing system together. The design of the clamping piece 33 should ensure that it can withstand a large pressure and will not loosen or fall off during construction.

[0063] In detail, the clamping piece 33 in the embodiment is a butterfly buckle. The butterfly buckle is easy to install and simple to operate. In actual construction, only the two wings of the butterfly buckle need to be opened and sleeved on the tensioning screw, and then the nut is tightened to complete the fixing. The butterfly buckle has strong clamping force and can firmly fix the components such as the formwork 2, the keel 31 and the steel pipe 32. The special structure design of the butterfly buckle makes the two wings tightly clamp the tensioning screw after the nut is tightened, providing stable support.

[0064] Compared with the traditional pouring method using pre-buried tensioning screws, the pre-buried tensioning screws need to be accurately positioned and fixed before concrete pouring, and once the position is determined, it is difficult to change. The tensioning screw of the planted steel bar can be positioned, drilled and installed according to the actual construction needs after the structure such as the supporting pile 41 is completed, and the construction is more flexible, which can adapt to different engineering conditions and design changes. It has the advantages of flexible construction and reducing construction difficulty.

[0065] Further, a water stop structure is attached to the surface of the waterproof layer 44 facing the outer wall layer 43. Of course, the water stop structure can also be attached to the surface of the waterproof layer 44 facing the fat groove layer 42, or both surfaces are provided with the water stop structure.

[0066] According to the embodiment of the utility model, on the other hand, a construction method of a single-side formwork system is also provided, which comprises the following steps:

[0067] The first end of the anchoring segment 11 is fixedly connected with the steel structure of the supporting pile 41. Specifically, the connection between the anchoring segment 11 and the steel structure of the supporting pile 41 can be realized by directly inserting or first slotting and then inserting, and the position and quantity of insertion are determined according to actual requirements.

[0068] The second end of the anchoring segment 11 is fixedly connected with the first end of the fat groove segment 12. Specifically, welding or threaded sleeve connection can be adopted.

[0069] The formwork 2 is erected at the second end of the fat groove segment 12, and the erection is fixed by the mounting and fixing assembly composed of the keel 31, the steel pipe 32 and the clamping piece 33, and the fat groove layer 42 is formed by filling the concrete between the formwork 2 and the supporting pile 41.

[0070] After the mounting and fixing assembly and the formwork 2 are removed in sequence, the second end of the fat groove segment 12 is connected with the first end of the outer wall segment 13.

[0071] The waterproof layer 44 is arranged outside the fat groove layer 42, and the water stop structure is arranged at the position where the tension rod penetrates the waterproof layer 44. Specifically, the steps are as follows: the expansion water stop ring 14 is sleeved on the tension rod, and is pushed to be attached to the waterproof layer, and then the gap between the expansion water stop ring 14 and the tension rod is filled with water stop glue for sealing.

[0072] The formwork 2 is erected in sequence at the second end of the outer wall segment 13, and the erection is fixed by the mounting and fixing assembly composed of the keel 31, the steel pipe 32 and the clamping piece 33, and the outer wall layer 43 is formed by filling the concrete between the formwork 2 and the waterproof layer 44.

[0073] After the mounting and fixing assembly and the formwork 2 are removed in sequence, the basement outer wall construction is completed.

[0074] Further, the steps of arranging the water stop piece 16 in the fat groove segment 12 and the outer wall segment 13 are further included.

[0075] The maximum wall thickness of the unilateral formwork system of the embodiment is 1100mm, the arrangement interval of the pulling screw rod on the wall surface is transverse / longitudinal = 500mm / 400mm, the maximum axial force of the three-section pulling screw rod and the butterfly buckle caused by the lateral load generated by the concrete pouring is 11.835kn (less than 17kn) according to the calculation of the single-side pouring wall body height of 6m. According to the mechanical monitoring report of the butterfly buckle, the rotating buckle of the butterfly buckle will not be damaged when the force P = 17kn, and the greater the tension, the smaller the displacement of the steel bar clamped by the butterfly buckle (the tighter the tension). Therefore, the type butterfly buckle and the three-section pulling screw rod system fully meet the lateral stress requirements of the concrete pouring in the unilateral formwork system. Therefore, the three-section pulling screw rod and the butterfly buckle can replace the vertical inclined bracing of the traditional unilateral formwork.

[0076] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A pull screw, characterized in that The utility model relates to a kind of supporting pile and outer wall connection structure, including: A rod body has successively arranged anchoring segment (11), fat groove segment (12) and outer wall segment (13), the first end of the anchoring segment (11) is fixedly connected with the steel structure of support pile (41), the second end of the anchoring segment (11) is fixedly connected with the first end of the fat groove segment (12), the second end of the fat groove segment (12) is detachably connected with the first end of the outer wall segment (13); Water-stop structure, the water-stop structure is sleeved in the fat groove segment (12), and the water-stop structure can swell with water, to seal the waterproof layer (44) penetrated.

2. Opposed screw rod according to claim 1, characterized in that The water-stop structure includes expansion water-stop ring (14) sleeved on the fat groove segment (12) and water-stop glue arranged in the gap between the expansion water-stop ring (14) and fat groove segment (12).

3. Opposed screw rod according to claim 1, characterized in that The anchoring segment (11) is steel bar.

4. Opposed screw rod according to claim 3, characterized in that The first end of the anchoring segment (11) is fixedly connected with the steel structure of support pile (41) by welding, and the second end of the anchoring segment (11) is fixedly connected with the first end of the fat groove segment (12) by welding.

5. Opposed screw rod according to claim 4, characterized in that The second end of the fat groove segment (12) and the first end of the outer wall segment (13) are respectively provided with threads; further including threaded connection piece (15), which is suitable for threadedly connecting the second end of the fat groove segment (12) and the first end of the outer wall segment (13).

6. Opposed screw rod according to any one of claims 1-5, characterized in that Further including: Water-stop piece (16), the water-stop piece (16) is sleeved on the fat groove segment (12) and / or the outer wall segment (13).

7. A one-sided formwork system, characterized in that Including: The tension screw according to any one of claims 1-6 further includes a formwork (2) and a mounting and fixing assembly, one end of the tension screw is arranged inside the support pile (41), the other end is exposed to the formwork (2) and is fixed through the mounting and fixing assembly, the formwork (2) is sequentially filled with a fat groove layer (42), a waterproof layer (44) and an outer wall layer (43) in the interval of the support pile (41), the fat groove layer (42) is arranged between the support pile (41) and the outer wall layer (43), and the waterproof layer (44) is arranged between the fat groove layer (42) and the outer wall layer (43).

8. The one-sided formwork system of claim 7, wherein, The water-stop structure is attached to the surface of the waterproof layer (44) towards the outer wall layer (43).

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