Prefabricated square pile and prefabricated square pile bottom plate penetrating water stop node

Abstract

A circle of cylindrical water-stop steel plate is fixedly attached to the upper portion of a pile body, the upper end and the lower end of the cylindrical water-stop steel plate are parallel and inclined to the pile body, and the inclination angle of the upper end and the lower end of the cylindrical water-stop steel plate relative to the axis of the pile body is the design angle a of the pile body penetrating through the bottom plate of an underground structure. The distance between the upper end and the lower end of the cylindrical water-stop steel plate is the design thickness h of the underground structure bottom plate, and the position of the cylindrical water-stop steel plate on the upper portion of the pile body is the design position where the pile body penetrates through the underground structure bottom plate; a circle of plate-shaped water-stop steel plate is fixed on the outer side of the cylindrical water-stop steel plate, and the plate-shaped water-stop steel plate is located between the upper end and the lower end of the cylindrical water-stop steel plate and is parallel to the upper end and the lower end of the cylindrical water-stop steel plate. Subsequent dismounting is facilitated, the steel plate consumption can be reduced, and the waterproof effect of the bottom plate is ensured.

Description

Technical Field

[0001] The utility model relates to waterproofing of underground structures, in particular to a prefabricated square pile and a water-stopping node of the prefabricated square pile passing through a bottom plate. Background Art

[0002] In order to ensure a smaller displacement deformation of the side wall of the foundation pit without setting up horizontal support, prefabricated square piles can be used to support the foundation pit by tilting at a certain angle through the underground structure bottom plate. At the same time, in order to avoid water seepage, a water-stop structure needs to be set at the node. At present, the water-stop steel plate connected to the pile body is generally arranged perpendicular to the pile body, and its water-stop structure has the following problems: due to geological soil reasons, the water-stop plate attached to the pile body often deviates from the position of the underground structure bottom plate, so it is necessary to lengthen its length, which increases the material cost, and after the foundation pit support is completed, the prefabricated square piles need to be removed, and the excessively long water-stop plate will exceed the underground structure bottom plate, so part of the water-stop plate also needs to be removed, affecting the removal efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a prefabricated square pile and a prefabricated square pile through the bottom plate water-stop node, and the size of the cylindrical water-stop steel plate is adjusted according to the thickness of the bottom plate and the design angle of the prefabricated square pile passing through the bottom plate of the underground structure, which is convenient for subsequent dismantling and saves the amount of steel plate, thereby ensuring the waterproof effect of the bottom plate.

[0004] The technical solution adopted by the utility model is:

[0005] A prefabricated square pile, a circle of cylindrical waterstop steel plates attached and fixed to the upper part of the pile body, the upper and lower ends of the cylindrical waterstop steel plates are parallel to and inclined to the pile body, the inclination angle of the upper and lower ends of the cylindrical waterstop steel plates relative to the axis of the pile body is the design angle a of the pile body passing through the bottom plate of the underground structure, the distance between the upper and lower ends of the cylindrical waterstop steel plates is the design thickness h of the bottom plate of the underground structure, the position of the cylindrical waterstop steel plates on the upper part of the pile body is the design position of the pile body passing through the bottom plate of the underground structure; a circle of plate-shaped waterstop steel plates is fixed to the outside of the cylindrical waterstop steel plates, the plate-shaped waterstop steel plates are located between the upper and lower ends of the cylindrical waterstop steel plates and are parallel to the upper and lower ends of the cylindrical waterstop steel plates.

[0006] Preferably, the cylindrical waterstop steel plate is fixed to the pile body by connecting steel bars and auxiliary longitudinal bars; the connecting steel bars are distributed and welded along the four corners of the cylindrical waterstop steel plate, the connecting steel bars extend into the outermost layer of steel bars inside the pile body, the auxiliary longitudinal bars are distributed at the four corners of the cylindrical waterstop steel plate and welded to the connecting steel bars along the line, the auxiliary longitudinal bars are located inside the outermost layer of steel bars inside the pile body and are welded and fixed to the longitudinal main bars inside the pile body.

[0007] Preferably, the pile body includes an upper pile section and a lower pile section, which are respectively welded to the steel cap to be spliced ​​into a whole, the cylindrical water-stop steel plate and the plate-shaped water-stop steel plate are located on the upper pile section, and a pile tip is provided at the bottom end of the lower pile section.

[0008] Preferably, the cylindrical waterstop steel plate and the plate-shaped waterstop steel plate are made of Q235 steel.

[0009] A prefabricated square pile-through-bottom-plate water-stop node comprises a prefabricated square pile obliquely passing through the bottom plate of an underground structure; a circle of cylindrical water-stop steel plates is attached and fixed to the upper part of the prefabricated square pile, the upper end of the cylindrical water-stop steel plates is flush with the top surface of the bottom plate of the underground structure, and the lower end is flush with the bottom surface of the bottom plate of the underground structure; a circle of plate-shaped water-stop steel plates is fixed on the outer side of the cylindrical water-stop steel plates, and the plate-shaped water-stop steel plates are located inside the bottom plate of the underground structure and are parallel to the bottom plate of the underground structure.

[0010] Preferably, the cylindrical waterstop steel plate is fixed to the prefabricated square piles by connecting steel bars and auxiliary longitudinal bars; the connecting steel bars are distributed and welded along the four corners of the cylindrical waterstop steel plate, the connecting steel bars extend into the outermost layer of steel bars inside the prefabricated square piles, the auxiliary longitudinal bars are distributed at the four corners of the cylindrical waterstop steel plate and welded to the connecting steel bars along the line, the auxiliary longitudinal bars are located inside the outermost layer of steel bars inside the prefabricated square piles and are welded to the longitudinal main bars inside the prefabricated square piles.

[0011] Preferably, the prefabricated square pile includes an upper pile section and a lower pile section, which are respectively welded to the steel cap to be spliced ​​into a whole, the cylindrical water-stop steel plate and the plate-shaped water-stop steel plate are located on the upper pile section, and a pile tip is provided at the bottom end of the lower pile section.

[0012] Preferably, the cylindrical waterstop steel plate and the plate-shaped waterstop steel plate are made of Q235 steel.

[0013] The beneficial effects of the utility model are:

[0014] When constructing the base plate, the prefabricated square piles can continue to support the foundation pit. In addition, the size of the cylindrical water-stop steel plate can be adjusted according to the thickness of the base plate and the design angle of the prefabricated square piles passing through the base plate of the underground structure. This not only facilitates subsequent dismantling but also saves steel plates, ensuring the waterproof effect of the base plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a water-stopping node of a prefabricated square pile passing through a bottom plate in the first embodiment of the present utility model.

[0016] Figure 2 It is a schematic diagram of the prefabricated square piles in the second embodiment of the present utility model.

[0017] Figure 3 It is a cross-sectional view of the prefabricated square pile at the cylindrical water-stop steel plate in the second embodiment of the present utility model.

[0018] In the figure: 1-underground structure bottom plate; 2-upper pile section; 3-steel cap; 4-lower pile section; 5-pile tip; 6-cylindrical waterstop steel plate; 7-plate waterstop steel plate; 7-connecting steel; 8-auxiliary longitudinal reinforcement; 9-outermost layer of steel bars inside the pile body; 10-longitudinal main reinforcement inside the pile body. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with 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. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] The features and performance of the present application are further described in detail below in conjunction with the embodiments.

[0024] Embodiment 1

[0025] This embodiment discloses a prefabricated square pile through bottom plate water stop node, comprising prefabricated square piles and underground structure bottom plate 1; wherein:

[0026] Prefabricated square piles are inclined to pass through the underground structure bottom plate 1, see Figure 1 ;

[0027] A circle of cylindrical water-stopping steel plate 6 is attached and fixed to the upper part of the prefabricated square pile 1. The upper end of the cylindrical water-stopping steel plate 6 is flush with the top surface of the underground structure bottom plate 1, and the lower end is flush with the bottom surface of the underground structure bottom plate 1. Figure 1 ;

[0028] A circle of plate-shaped water-stopping steel plate 7 is fixed on the outside of the cylindrical water-stopping steel plate 6. The plate-shaped water-stopping steel plate 7 is located inside the underground structure bottom plate 1 and parallel to the underground structure bottom plate 1. Figure 1 .

[0029] The construction steps of the prefabricated square pile through the bottom plate water stop node are:

[0030] S1, first calculate the size of the cylindrical water-stop steel plate 6 and make the cylindrical water-stop steel plate 6 according to the size of the pile body, the design angle a of the pile body passing through the underground structure bottom plate 1, and the design thickness h of the underground structure bottom plate 1, and then fix the plate-shaped water-stop steel plate 7 to the outer side of the cylindrical water-stop steel plate 6 to ensure that the plate-shaped water-stop steel plate 7 is parallel to the upper and lower ends of the cylindrical water-stop steel plate 6;

[0031] S2. According to the pile size, pile top elevation, underground structure bottom plate 1 elevation and design thickness h, and the design angle a of the pile body passing through the underground structure bottom plate 1, calculate the distance L1 from the upper high point of the cylindrical water-stop steel plate 6 to the pile top and the distance L2 from the upper low point to the pile top, and mark the positioning line, see Figure 1 ;

[0032] S3, assembling the cylindrical water-stop steel plate 6 onto the steel bars inside the pile body according to the positioning, and then pouring and curing the pile body;

[0033] S4, press the prefabricated square pile into the soil at the design angle a to the corresponding elevation;

[0034] S5. Casting and curing the underground structure slab 1;

[0035] S6. After the support is completed, remove the exposed part of the prefabricated square piles.

[0036] In order to facilitate the production of a longer pile, in this embodiment, preferably: Figure 1 As shown, the pile body includes an upper pile section 2 and a lower pile section 4, which are respectively welded to a steel cap 3 to be spliced ​​into a whole, a cylindrical water-stopping steel plate 6 and a plate-shaped water-stopping steel plate 7 are located on the upper pile section 2, and a pile tip 5 is provided at the bottom end of the lower pile section 4.

[0037] Regarding the material of the cylindrical water-stop steel plate 6 and the plate-shaped water-stop steel plate 7, in the present embodiment, preferably, the cylindrical water-stop steel plate 6 and the plate-shaped water-stop steel plate 7 are made of Q235 steel.

[0038] During the construction of the underground structure floor 1, the prefabricated square piles can continue to support the foundation pit, and the size of the cylindrical water-stop steel plate 6 is adjusted according to the thickness h of the underground structure floor 1 and the design angle a of the prefabricated square piles passing through the underground structure floor 1, which not only facilitates subsequent dismantling but also saves the amount of steel plates, thereby ensuring the waterproof effect of the underground structure floor 1.

[0039] Embodiment 2

[0040] This embodiment discloses a prefabricated square pile, such as Figure 2 As shown:

[0041] A circle of cylindrical water-stopping steel plate 6 is attached and fixed to the upper part of the pile body, and the upper and lower ends of the cylindrical water-stopping steel plate 6 are parallel and inclined to the pile body. The inclination angle of the upper and lower ends of the cylindrical water-stopping steel plate 6 relative to the axis of the pile body is the design angle a of the pile body passing through the underground structure bottom plate 1, the distance between the upper and lower ends of the cylindrical water-stopping steel plate 6 is the design thickness h of the underground structure bottom plate 1, and the position of the cylindrical water-stopping steel plate 6 on the upper part of the pile body is the design position of the pile body passing through the underground structure bottom plate 1;

[0042] A circle of plate-shaped water-stopping steel plate 7 is fixed on the outside of the cylindrical water-stopping steel plate 6 . The plate-shaped water-stopping steel plate 7 is located between the upper and lower ends of the cylindrical water-stopping steel plate 6 and is parallel to the upper and lower ends of the cylindrical water-stopping steel plate 6 .

[0043] In order to facilitate the production of a longer pile, in this embodiment, preferably: Figure 2 As shown, the pile body includes an upper pile section 2 and a lower pile section 4, which are respectively welded to a steel cap 3 to be spliced ​​into a whole, a cylindrical water-stopping steel plate 6 and a plate-shaped water-stopping steel plate 7 are located on the upper pile section 2, and a pile tip 5 is provided at the bottom end of the lower pile section 4.

[0044] In order to ensure the installation reliability of the cylindrical water-stopping steel plate 6, in this embodiment, preferably: Figure 3 As shown, the cylindrical waterstop steel plate 6 is fixed to the pile body by connecting steel bars 8 and auxiliary longitudinal bars 9; the connecting steel bars 8 are distributed and welded along the four corners of the cylindrical waterstop steel plate 6, the connecting steel bars 8 extend into the outermost steel bars 9 inside the pile body, the auxiliary longitudinal bars 9 are distributed at the four corners of the cylindrical waterstop steel plate 6 and welded to the connecting steel bars 8 along the lines, the auxiliary longitudinal bars 9 are located inside the outermost steel bars 9 inside the pile body and are welded to the longitudinal main bars 10 inside the pile body.

[0045] The size of the cylindrical water-stop steel plate 6 is adjusted according to the thickness h of the underground structure bottom plate 1 and the design angle a of the prefabricated square piles passing through the underground structure bottom plate 1, which is convenient for subsequent dismantling and saves the amount of steel plate, thereby ensuring the waterproof effect of the underground structure bottom plate 1.

[0046] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A prefabricated square pile, characterized in that: A circle of cylindrical water-stop steel plate is attached and fixed on the upper part of the pile body, and the upper and lower ends of the cylindrical water-stop steel plate are parallel and inclined to the pile body. The inclination angle of the upper and lower ends of the cylindrical water-stop steel plate relative to the axis of the pile body is the design angle a of the pile body passing through the bottom plate of the underground structure, the distance between the upper and lower ends of the cylindrical water-stop steel plate is the design thickness h of the bottom plate of the underground structure, and the position of the cylindrical water-stop steel plate on the upper part of the pile body is the design position of the pile body passing through the bottom plate of the underground structure; a circle of plate-shaped water-stop steel plate is fixed on the outside of the cylindrical water-stop steel plate. The water steel plate is located between the upper and lower ends of the cylindrical waterstop steel plate and is parallel to the upper and lower ends of the cylindrical waterstop steel plate; the cylindrical waterstop steel plate is fixed to the pile body by connecting steel bars and auxiliary longitudinal bars; the connecting steel bars are distributed and welded along the four corners of the cylindrical waterstop steel plate, the connecting steel bars extend into the outermost layer of steel bars inside the pile body, the auxiliary longitudinal bars are distributed at the four corners of the cylindrical waterstop steel plate and welded to the connecting steel bars along the line, the auxiliary longitudinal bars are located inside the outermost layer of steel bars inside the pile body and are welded to the longitudinal main bars inside the pile body.

2. The prefabricated square pile according to claim 1, characterized in that: The pile body comprises an upper pile section and a lower pile section, which are respectively welded to the steel cap to be spliced ​​into a whole, a cylindrical waterstop steel plate and a plate waterstop steel plate are located on the upper pile section, and a pile tip is provided at the bottom end of the lower pile section.

3. The prefabricated square pile according to claim 1, characterized in that: The cylindrical waterstop steel plate and the plate waterstop steel plate are made of Q235 steel.

4. A prefabricated square pile through the bottom plate water stop node, comprising a prefabricated square pile obliquely passing through the bottom plate of an underground structure; characterized in that: A circle of cylindrical waterstop steel plates is attached and fixed to the upper part of the prefabricated square piles, the upper end of the cylindrical waterstop steel plates is flush with the top surface of the underground structure floor, and the lower end is flush with the bottom surface of the underground structure floor; a circle of plate-shaped waterstop steel plates is fixed on the outside of the cylindrical waterstop steel plates, the plate-shaped waterstop steel plates are located inside the underground structure floor and parallel to the underground structure floor; the cylindrical waterstop steel plates are fixed to the prefabricated square piles through connecting steel bars and auxiliary longitudinal bars; the connecting steel bars are distributed and welded along the four corners of the cylindrical waterstop steel plates, the connecting steel bars extend into the outermost layer of steel bars inside the prefabricated square piles, the auxiliary longitudinal bars are distributed at the four corners of the cylindrical waterstop steel plates and welded to the connecting steel bars along the lines, the auxiliary longitudinal bars are located inside the outermost layer of steel bars inside the prefabricated square piles and are welded and fixed to the longitudinal main bars inside the prefabricated square piles.

5. The prefabricated square pile through bottom plate water stop node according to claim 4, characterized in that: The prefabricated square pile includes an upper pile section and a lower pile section, which are respectively welded to the steel cap to be spliced ​​into a whole, a cylindrical waterstop steel plate and a plate-shaped waterstop steel plate are located on the upper pile section, and a pile tip is provided at the bottom end of the lower pile section.

6. The prefabricated square pile through bottom plate water stop node according to claim 4, characterized in that: The cylindrical waterstop steel plate and the plate waterstop steel plate are made of Q235 steel.

Images