PHC double-raking pile cap reverse hanging structure

Abstract

The utility model provides a PHC double-raking pile cap reverse hanging structure, which belongs to the field of wharf construction and comprises a double-raking pile and a main support beam vertically fixed on the double-raking pile, a first horizontal beam and a second horizontal beam are respectively erected at the top and the bottom of the main support beam, a plurality of first screw rods are vertically arranged on the first horizontal beam, and a plurality of second screw rods are vertically arranged on the second horizontal beam. The upper end of the first lead screw penetrates through the first horizontal beam and is fixed to the upper surface of the first horizontal beam in a screwed mode through a nut, the lower end of the first lead screw penetrates through the second horizontal beam and is fixed to the lower surface of the second horizontal beam in a screwed mode through a nut, and the second horizontal beam is arranged at the bottom of a pile cap to be poured. A wood brace and a third horizontal beam are arranged on the second horizontal beam, and a side template is arranged above the second horizontal beam. The structure is integrally formed, is simple and reasonable, is convenient to process and mount, can shorten the construction period and reduce the engineering cost, and has a wide application prospect.

Description

Technical Field

[0001] The utility model belongs to the field of dock construction, in particular to a PHC double-inclined pile cap reverse hanging structure. Background Art

[0002] The pile cap is an important structure that connects the pile foundation and the superstructure. It is generally made of cast-in-place reinforced concrete. The top surface size of the pile cap is determined by the width of the precast beam, the shelving length, and the allowable deviation of the precast installation. The usual pile cap support system can be classified into two categories, one is the clamping type and the other is the reverse hanging type. The reverse hanging support system usually uses steel bars or fine-rolled threaded steel bars to suspend the bottom formwork. The tension of the steel bars or fine-rolled threaded steel bars when suspending the bottom formwork is used to offset the various forces generated during the pouring of the pile cap. After the concrete pouring is completed, the steel bars or fine-rolled threaded steel bars that suspend the bottom formwork need to be cut off. It is difficult to cut and repair concrete underwater.

[0003] Prestressed high-strength concrete (hereinafter referred to as PHC) pipe piles are a kind of factory-prefabricated concrete components with the advantages of reliable quality, economical and practical, strong applicability, convenient construction and short production cycle. In actual projects, they are mainly used as the foundation structure of buildings and have been widely used in my country.

[0004] As a prefabricated pile foundation with excellent performance, PHC piles are widely used in engineering construction. PHC piles are prestressed high-strength concrete piles produced by professional manufacturers. They use advanced processes such as concrete with C80 or above, prestressing by pre-tensioning method, and adding finely ground materials and high-efficiency water reducing agents. The concrete is compacted by centrifugal dehydration and then cured by steam twice with normal pressure and high pressure. It is a slender hollow prefabricated concrete component with equal cross-section. In recent years, PHC piles have been used in hydraulic structures due to their advantages such as high pile strength, strong permeability, less concrete volume, and low cost. The circular cross-section of PHC piles is more conducive to water flow, which greatly reduces the scouring of riverbeds and bank slopes by water flow. Therefore, in hydraulic structures, concrete square piles will gradually be replaced by them, and the process used for the original concrete square pile cast-in-place pile cap is no longer applicable.

[0005] The existing PHC inclined pile cap reverse hanging structure needs to be assembled on site, which is far from meeting the current high-strength construction requirements. The assembly is time-consuming and labor-intensive, the construction efficiency is low, the site management is inconvenient, and the economy is poor. Therefore, a PHC double inclined pile cap reverse hanging structure is needed for more convenient and safe auxiliary construction. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a PHC double-inclined pile cap inverted hanging structure, which is easy to construct, has a simple and reasonable structure, can shorten the construction period and reduce the engineering cost.

[0007] The utility model adopts the following technical solutions to solve the above problems:

[0008] A PHC double-inclined pile cap inverted hanging structure comprises a double-inclined pile and a main support beam vertically fixed on the double-inclined pile, wherein a first horizontal beam and a second horizontal beam are respectively arranged on the top and the bottom of the main support beam, and a plurality of first screw rods are vertically arranged on the first horizontal beam, wherein the upper ends of the first screw rods pass through the first horizontal beam and are screwed and fixed to the upper surface of the first horizontal beam by nuts, and the lower ends of the first screw rods pass through the second horizontal beam and are screwed and fixed to the lower surface of the second horizontal beam by nuts, and the second horizontal beam is arranged at the bottom of the pile cap to be cast.

[0009] Furthermore, a bottom formwork is laid above the second horizontal beam, and the bottom formwork includes a plurality of wooden beams and a plurality of third horizontal beams arranged in parallel, and the wooden beams and the third horizontal beams are arranged around the two double-inclined piles.

[0010] Furthermore, a horizontal support plate is provided above the bottom mold.

[0011] Furthermore, a plurality of third screw rods are provided between the second horizontal beams to connect and fix adjacent second horizontal beams to each other as a whole.

[0012] Furthermore, a side formwork is provided above the second horizontal beam, and the side formwork is arranged around the pile cap to be cast.

[0013] Furthermore, a plurality of triangular bars are provided on the inner side where the side formwork is connected to the second horizontal beam.

[0014] Furthermore, a second screw rod is provided on the upper portion of the side template, and the second screw rod passes through the oppositely arranged side template. Gaskets are sleeved on both ends of the second screw rod and are screwed and fixed by nuts.

[0015] Furthermore, the first horizontal beam is located above the pile cap to be cast.

[0016] Furthermore, the first horizontal beam and the second horizontal beam are both formed by welding two side-by-side I-beams.

[0017] Furthermore, for each component that is screwed and fixed by a nut, a gasket is provided between the nut and the corresponding steel material.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model provides a PHC double-inclined pile cap reverse hanging structure, which simplifies the design of two parallel shoulder-pole beams commonly used in the prior art as a support frame, and encloses a rectangular area between the main beam and the first horizontal beam and combines the main support beam with the first screw rod to form a whole, thereby reducing the support frame, shoulder-pole beam, steel plate, reverse hanging bolts, nuts, gaskets and redundant wooden boards, making the structure simpler, reducing the construction difficulty and cost, and can be unloaded and installed separately;

[0020] 2. When in use, the structure is fixed and welded as a whole with screw rods, so that the structure is placed in the inclined pile, ensuring that the channel steel is close to the pile edge and the adjacent spliced ​​channel steels are connected as a whole with tension screw rods. At the same time, this structure only combines the first horizontal beam and the main support beam through the first screw rod, reducing multiple structures, making the construction simple and having little impact on the pouring of the pile cap during the construction process;

[0021] 3. According to the size of the components, the first horizontal beam and the second horizontal beam are pre-joined in a back-to-back manner, which is convenient for processing and installation, reduces the on-site assembly time, improves construction efficiency, is easy to manage on site, and can effectively extend the service life

[0022] 4. The double-slanted piles of the utility model are arranged at an oblique angle, which can increase the stability and bearing capacity of the pile group;

[0023] 5. The utility model uses less turnover materials, is easy to clean on site, materials are not easy to lose, is convenient for on-site management, can shorten the construction period, has relatively low engineering costs, and has obvious economic benefits;

[0024] 6. All components of the double-slant pile cap reverse hanging structure are first fixed with screw rods, and then the upper and lower flanges of the two channel steels are welded into a whole with small steel plates to ensure the safety of the structure;

[0025] 7. The first horizontal beam and the second horizontal beam are spliced ​​back to back, and small steel plates are used every 1 meter to weld the upper and lower flanges of the two channel steels into a whole, so as to facilitate installation and demoulding;

[0026] 8. A triangular bar is provided on the inner side of the side formwork. The size of the triangular bar can be selected according to actual needs. The joints can be processed to improve the stability of the side formwork and make the pouring operation safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present utility model, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a structural schematic diagram of the utility model.

[0029] Figure 2 It is a side structural schematic diagram of the utility model.

[0030] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0031] In the figure, 1-double inclined piles; 2-main supporting beam; 3-first horizontal beam; 4-second horizontal beam; 5-first screw rod; 6-second screw rod; 7-side formwork; 8-support plate; 9-third horizontal beam; 10-wooden beam; 11-third screw rod; 12-triangle bar. DETAILED DESCRIPTION

[0032] In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "top", "bottom", "longitudinal" and the like indicate orientations or state relationships based on the orientations or state relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection or connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1-3As shown, the utility model provides a PHC double-inclined pile cap inverted hanging structure, comprising a double-inclined pile 1 and a main support beam 2, wherein the two main support beams 2 are respectively vertically fixed on the two double-inclined piles 1, and a first horizontal beam 3 and a second horizontal beam 4 are respectively erected on the top and the bottom of the main support beam 2, wherein the first horizontal beam 3 is located above the pile cap to be cast and plays a supporting role during the pouring of the pile cap; a plurality of first screw rods 5 are vertically arranged on the first horizontal beam 3, and the upper ends of the first screw rods 5 pass through the first horizontal beam 3 and are screwed and fixed to the upper surface of the first horizontal beam 3 by nuts, and the first screw rods 5 are respectively installed on the top and the bottom of the main support beam 2. The lower end passes through the second horizontal beam 4 and is fixed to the lower surface of the second horizontal beam 4 by screwing nuts. The main support beam 2 and the first horizontal beam 3 are welded, which is convenient for installation and demolding. The second horizontal beam 4 is arranged at the bottom of the pile cap to be cast. A rectangular area is enclosed between the first horizontal beam 3 and the second horizontal beam 4. The first horizontal beam 3 is located above the pile cap to be cast. The first horizontal beam 3 and the second horizontal beam 4 are both welded by two side-by-side I-beams, which is convenient for installation and demolding. Each component is fixed by screwing nuts, and gaskets are provided between the nuts and the corresponding steels.

[0035] A plurality of third screw rods 11 are provided between the second horizontal beams 4 to interconnect and fix the adjacent second horizontal beams 4 as a whole; a bottom form is laid above the second horizontal beams 4, and the bottom form includes a plurality of parallel wooden beams 10 and a plurality of third horizontal beams 9, and the wooden beams 10 and the third horizontal beams 9 are arranged around two double inclined piles 1. In this embodiment, the size of the wooden beam 10 is 12×10cm, and the third horizontal beam 9 is made of No. 12 channel steel; a horizontal support plate 8 is provided above the bottom form, and in this embodiment, film plywood is used, and the size is 18mm thick wooden plywood.

[0036] A side formwork 7 is provided above the second horizontal beam 4. The side formwork 7 is arranged around the pile cap to be cast. A plurality of triangular bars 12 are provided inside the connection between the side formwork 7 and the second horizontal beam 4. The size of the triangular bars 12 can be selected according to actual needs. In this embodiment, the preferred size is 5×5 cm. The triangular bars 12 can be used to process the joints to improve the stability of the side formwork and make the casting operation safer. A second screw rod 6 is provided on the upper part of the side formwork 7. The second screw rod 6 passes through the oppositely arranged side formwork 7. Gaskets are provided at both ends of the second screw rod 6 and are screwed and fixed by nuts. A triangular bar is provided inside the side formwork 7.

[0037] In this embodiment, the main support beam 2 adopts No. 14 I-beam, the first horizontal beam 3, the second horizontal beam 4, and the third horizontal beam 9 adopt No. 20 channel steel, No. 14 channel steel and No. 12 channel steel respectively, the first screw rod 5 adopts φ30 screw rod, and the second screw rod and the third screw rod 11 adopt φ20 screw rod.

[0038] Operation process:

[0039] 1. When pouring the core concrete of two double-inclined piles 1, pour the lower parts of the two main support beams 2 together in the core concrete, and set the main support beams 2 vertically. Set two first horizontal beams 3 horizontally on the main support beams 2, use the first screw rod 5 to reverse the second horizontal beams 4 to double the channel steel, and then set the two main support beams 2 on the two second horizontal beams 4, so that the main support beams 2 are perpendicular to the two second horizontal beams 4. According to the size of the components, the first horizontal beams 3 and the second horizontal beams 4 are spliced ​​in advance, and the splicing is back-to-back. The upper and lower flanges of the two channel steels are welded into a whole with small steel plates every 1 meter.

[0040] 2. A first screw rod 5 is vertically passed through each first horizontal beam 3. After the first screw rod 5 passes through the first horizontal beam 3, it is fixed with a gasket and a nut. After the pile top elevation and pile position are verified, installation is carried out. During installation, the elevation of the top surface of the channel steel must be controlled well, ensuring that the channel steel is close to the pile edge and the adjacent spliced ​​channel steels are connected into a whole with a φ20 tension screw.

[0041] 3. Hang the two second horizontal beams 4 respectively under the two first horizontal beams 3, and pass the corresponding first screw rods 5 in a direction parallel to the first horizontal beams 3. Then, similarly, pass the gaskets and nuts behind the first screw rods 5 through the second horizontal beams 4, so that the first horizontal beams 3 can hang the second horizontal beams 4 through the first screw rods 5. At this time, the two double inclined piles 1 are located between the two second horizontal beams 4. Then, lay 12×10cm wooden beams and No. 12 channel steel on the two second horizontal beams 4 as a bottom formwork, and lay film plywood on top of the bottom formwork. The film plywood serves as a construction platform for subsequent construction.

[0042] 4. Complete the binding of the steel bars required for the pile cap on the film plywood according to the construction drawings, including longitudinal bars and stirrups.

[0043] 5. After the second screw rods 6 are put through the side templates 7 at both ends in turn, the two second screw rods 6 on the side templates 7 are at the same level, and then gaskets are set on both ends of the second screw rods 6, and then fixed by screwing nuts.

[0044] 6. After the installation of the side formwork 7 is completed, the workers withdraw the pile cap reverse hanging construction device, cast the pile cap concrete in one go by a pump truck, and then cover the geotextile to sprinkle water on the concrete for curing. After the curing is completed, the device is removed.

[0045] The structure is formed in one piece, which is convenient for processing and installation, and can effectively improve the service life. When in use, it is fixed and welded into place as a whole with a screw rod, so that the structure is placed in the inclined pile, ensuring that the channel steel is close to the pile edge and the adjacent spliced ​​channel steels are connected into a whole with a tension screw. At the same time, the present invention has the advantages of simple structure, less turnover material, easy cleaning on site, material is not easy to lose, and convenient on-site management, and has broad application prospects.

[0046] The above embodiments are used to describe the present invention in detail, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of application of the present invention shall still fall within the scope of the patent coverage of the present invention.

Claims

1. A PHC double-inclined pile cap inverted hanging structure, comprising a double-inclined pile (1), characterized in that: It also includes a main support beam (2) vertically fixed on the double-inclined pile (1), a first horizontal beam (3) and a second horizontal beam (4) are respectively mounted on the top and bottom of the main support beam (2), a plurality of first screw rods (5) are vertically arranged on the first horizontal beam (3), the upper ends of the first screw rods (5) pass through the first horizontal beam (3) and are screwed and fixed to the upper surface of the first horizontal beam (3) by nuts, the lower ends of the first screw rods (5) pass through the second horizontal beam (4) and are screwed and fixed to the lower surface of the second horizontal beam (4) by nuts, and the second horizontal beam (4) is arranged at the bottom of the pile cap to be cast.

2. A PHC double-inclined pile cap inverted hanging structure according to claim 1, characterized in that: A bottom formwork is laid above the second horizontal beam (4), the bottom formwork comprising a plurality of wooden beams (10) and a plurality of third horizontal beams (9) arranged in parallel, the wooden beams (10) and the third horizontal beams (9) being arranged around the two double-inclined piles (1).

3. A PHC double-inclined pile cap inverted hanging structure according to claim 2, characterized in that: A horizontal support plate (8) is provided above the bottom mold. 。 4. A PHC double-inclined pile cap inverted hanging structure according to claim 1, characterized in that: A plurality of third screw rods (11) are arranged between the second horizontal beams (4) to connect and fix adjacent second horizontal beams (4) to each other as a whole.

5. The PHC double-inclined pile cap inverted hanging structure according to claim 1 is characterized by: A side formwork (7) is provided above the second horizontal beam (4), and the side formwork (7) is arranged around the pile cap to be cast.

6. A PHC double-inclined pile cap inverted hanging structure according to claim 5, characterized in that: A plurality of triangular strips (12) are provided at the inner bottom of the side template (7).

7. A PHC double-inclined pile cap inverted hanging structure according to claim 5, characterized in that: A second screw rod (6) is provided on the upper part of the side mold plate (7), and the second screw rod (6) passes through the oppositely arranged side mold plate (7). Gaskets are sleeved on both ends of the second screw rod (6) and are screwed and fixed by nuts.

8. A PHC double-inclined pile cap inverted hanging structure according to any one of claims 1 to 7, characterized in that: The first horizontal beam (3) is located above the pile cap to be cast.

9. A PHC double-inclined pile cap inverted hanging structure according to any one of claims 1 to 7, characterized in that: The first horizontal beam (3) and the second horizontal beam (4) are both formed by welding two side-by-side I-beams.

10. A PHC double-inclined pile cap inverted hanging structure according to any one of claims 1 to 7, characterized in that: For each component that is screwed and fixed by a nut, a gasket is provided between the nut and the corresponding steel material.

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