Pile foundation structure of multi-layer bearing platform

Abstract

The utility model relates to the technical field of pile foundations, and discloses a pile foundation structure of a multi-layer bearing platform, which comprises a vertical reinforcing steel bar, a first fixing reinforcing steel bar is fixedly connected outside the vertical reinforcing steel bar, a second fixing reinforcing steel bar is fixedly connected inside the vertical reinforcing steel bar, a supporting reinforcing steel bar is fixedly connected on the surface of the second fixing reinforcing steel bar, and the supporting reinforcing steel bar is fixedly connected on the surface of the supporting reinforcing steel bar. A third fixing steel bar is fixedly connected to the upper end of the outer portion of the vertical steel bar, and a fourth fixing steel bar is fixedly connected to the upper end of the third fixing steel bar. The vertical steel bars, the first fixing steel bars and the second fixing steel bars are used for connecting and supporting the circular steel bar cage, and the supporting steel bars correspond to the second fixing steel bars inside, so that the stress strength of the pile foundation is further improved; through the supporting structure composed of the bearing reinforcing steel bars, the connecting reinforcing steel bars, the third fixing reinforcing steel bars and the fourth fixing reinforcing steel bars, a layer of stable support is additionally arranged on the ground position of the pile, sufficient friction support exists between the vertical reinforcing steel bars and the ground before the vertical reinforcing steel bars are poured, deviation is avoided, and the overall stability of the pile foundation is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundations, and more specifically, to a pile foundation structure with a multi-layer bearing platform. Background Art

[0002] With the rapid development of China's transportation infrastructure construction, a large number of infrastructure projects have emerged everywhere, and the project scale is getting larger and larger, and the requirements for foundation bearing capacity are getting higher and higher. Therefore, the foundation construction problem is particularly important. During foundation construction, the terrain will be investigated and the foundation construction technology that meets the structural requirements will be selected accordingly. At present, when encountering shallow beach areas, exposed rock strata areas or floods during the construction period, bored cast-in-place piles are generally used as the support foundation. At present, when tying the steel reinforcement cage, binding wire is used to tie the spiral bars and main bars together and pour them inside the pile foundation. Generally, wooden boards or others are used to block for pouring. The steel reinforcement cage and the ground do not actually contact and support each other, so the internal steel reinforcement cage is prone to shift, affecting the stability of the pile foundation after pouring. Content of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a pile foundation structure with a multi-layer bearing platform, which has the advantage of enhancing the overall stability.

[0004] To achieve the above object, the utility model provides the following technical solution: A pile foundation structure with a multi-layer bearing platform, including vertical steel bars, a first fixed steel bar is fixedly connected to the outside of the vertical steel bars, a second fixed steel bar is fixedly connected to the inside of the vertical steel bars, a support steel bar is fixedly connected to the surface of the second fixed steel bar, a third fixed steel bar is fixedly connected to the upper end outside of the vertical steel bars, a fourth fixed steel bar is fixedly connected to the upper end of the third fixed steel bar, a first transverse steel bar is fixedly connected to the upper end inside of the vertical steel bars, a second transverse steel bar is fixedly connected to the upper end inside of the vertical steel bars, a bearing steel bar is fixedly connected to the lower end of the fourth fixed steel bar, and a connecting steel bar is fixedly connected to the upper end of the fourth fixed steel bar.

[0005] As a preferred technical solution of the utility model, there are eight vertical steel bars evenly distributed in a circle. The first fixed steel bar is annular, and the inner diameter value of the first fixed steel bar is equal to the diameter value of the circle formed by the vertical steel bars. There are four first fixed steel bars equally spaced outside the vertical steel bars.

[0006] As a preferred technical solution of the utility model, the second fixed steel bar is annular, and the outer diameter value of the second fixed steel bar is equal to the inner diameter value of the circle formed by the vertical steel bars. There are four second fixed steel bars equally spaced inside the vertical steel bars.

[0007] As a preferred technical solution of the utility model, three of the supporting steel bars are located between two evenly distributed fixed steel bars, and the adjacent supporting steel bars are in a vertically symmetrical state with the two commonly connected fixed steel bars.

[0008] As a preferred technical solution of the utility model, the fixed steel bar three is ring-shaped and its inner diameter is equal to the outer diameter of the circle composed of the vertical steel bars, and the diameter of the fixed steel bar three is greater than the diameter of the fixed steel bar one.

[0009] As a preferred technical solution of the utility model, the fixed steel bars four have twelve pieces distributed at equal angles on the upper end of the fixed steel bars three, and the shape of the fixed steel bars four is "L" shape.

[0010] As a preferred technical solution of the utility model, the load-bearing steel bars and the connecting steel bars are both ring-shaped, the inner diameter of the load-bearing steel bars is greater than the outer diameter of the fixed steel bars, and the diameter of the connecting steel bars is greater than the diameter of the load-bearing steel bars.

[0011] As a preferred technical solution of the utility model, there are four groups of steel cages composed of vertical steel bars, the lower end of the fixed steel bars at the lowest end still has a length of vertical steel bars extending outward, the upper end of the steel cage is connected by transverse steel bar 1 and transverse steel bar 2, and the diameter value of transverse steel bar 1 and transverse steel bar 2 is equal to the spacing value between the vertical steel bars.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model connects the circular steel bar cage supported by vertical steel bars, fixed steel bars 1 and fixed steel bars 2. The supporting steel bars further enhance the bearing strength of the fixed steel bars 2 inside the pile foundation. The supporting structure composed of the load-bearing steel bars, connecting steel bars, fixed steel bars 3 and fixed steel bars 4 provides the pile with an additional layer of stable support at the ground position, so that the vertical steel bars have sufficient friction support with the ground before being poured, and will not deviate, thereby enhancing the overall stability of the pile foundation.

[0014] 2. The utility model connects the steel cages by the transverse steel bars 1 and 2 to make them linked, so that the steel cages can also be fixed by the transverse steel bars 1 and 2 to jointly bear dynamic and static loads, thereby improving the stability and bearing capacity of the building. The function of the pile foundation is to penetrate the soft and highly compressible soil layer or water, and transfer the load borne by the pile to the harder, denser or less compressible foundation bearing layer. Through the mutual connection between the steel cages, the load borne by the building can be effectively dispersed and transferred, thereby enhancing the overall stability and safety of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic side view of the structure of the present utility model;

[0017] Figure 3 This is a schematic bottom view of the fixed steel bar four of the structure of the present utility model;

[0018] Figure 4 This is a schematic bottom view of the structure of the present utility model;

[0019] Figure 5 This is a schematic sectional view of the structure of the present utility model.

[0020] In the figure: 1, vertical steel bar; 2, fixing steel bar one; 3, fixing steel bar two; 4, supporting steel bar; 5, bearing steel bar; 6, connecting steel bar; 7, transverse steel bar one; 8, transverse steel bar two; 9, fixing steel bar three; 10, fixing steel bar four. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0022] As Figures 1 to 5 shown, the present utility model provides a pile foundation structure for a multi-layer bearing platform, including a vertical steel bar 1, an external fixing steel bar one 2 is fixedly connected to the vertical steel bar 1, an internal fixing steel bar two 3 is fixedly connected to the vertical steel bar 1, a supporting steel bar 4 is fixedly connected to the surface of the fixing steel bar two 3, an external upper end fixing steel bar three 9 is fixedly connected to the vertical steel bar 1, an upper end fixing steel bar four 10 is fixedly connected to the fixing steel bar three 9, an internal upper end transverse steel bar one 7 is fixedly connected to the vertical steel bar 1, an internal upper end transverse steel bar two 8 is fixedly connected to the vertical steel bar 1, a bearing steel bar 5 is fixedly connected to the lower end of the fixing steel bar four 10, and a connecting steel bar 6 is fixedly connected to the upper end of the fixing steel bar four 10.

[0023] The circular steel reinforcement cage connected and supported by the vertical steel bar 1, the fixing steel bar one 2 and the fixing steel bar two 3, and the supporting steel bar 4 for the internal fixing steel bar two 3 further improves the stress intensity of the pile foundation. The supporting structure composed of the bearing steel bar 5, the connecting steel bar 6, the fixing steel bar three 9 and the fixing steel bar four 10 provides an additional layer of stable support for the pile at the ground position, enabling the vertical steel bar 1 to have sufficient frictional support with the ground before pouring and preventing deviation, thereby enhancing the overall stability of the pile foundation.

[0024] Among them, there are eight vertical steel bars 1 evenly distributed in a circular shape. The first fixing steel bar 2 is annular, and the inner diameter value of the first fixing steel bar 2 is equal to the diameter value of the circle formed by the vertical steel bars 1. There are four first fixing steel bars 2 evenly distributed outside the vertical steel bars 1.

[0025] They are evenly distributed outside the vertical steel bars 1, providing an inward supporting force for the vertical steel bars 1 and effectively preventing the vertical steel bars 1 from deforming.

[0026] Among them, the second fixing steel bar 3 is annular, and the outer diameter value of the second fixing steel bar 3 is equal to the inner diameter value of the circle formed by the vertical steel bars 1. There are four second fixing steel bars 3 equally spaced inside the vertical steel bars 1.

[0027] They are evenly distributed inside the vertical steel bars 1, providing an outward supporting force for the vertical steel bars 1 and effectively preventing the vertical steel bars 1 from deforming.

[0028] Among them, there are three supporting steel bars 4 located between the evenly distributed second fixing steel bars 3, and the adjacent supporting steel bars 4 are symmetrically arranged up and down with the connected second fixing steel bars 3.

[0029] The supporting steel bars 4 play a role in fixing and supporting the second fixing steel bars 3. The symmetrical state can achieve the fixing and supporting effects in two directions, increasing the stability.

[0030] Among them, the third fixing steel bar 9 is annular, and its inner diameter value is equal to the outer diameter value of the circle formed by the vertical steel bars 1. The diameter value of the third fixing steel bar 9 is greater than the diameter value of the first fixing steel bar 2.

[0031] The larger diameter value of the third fixing steel bar 9 is beneficial to fixing the fourth fixing steel bar 10 above the third fixing steel bar 9.

[0032] Among them, there are twelve fourth fixing steel bars 10 evenly distributed at the upper end of the third fixing steel bar 9, and the shape of the fourth fixing steel bar 10 is "L" shaped.

[0033] The horizontally extending part of the fourth fixing steel bar 10 is located on the ground, increasing the stability of the steel cage of the vertical steel bars 1 during the casting of the pile and not easily shifting.

[0034] Among them, both the load-bearing steel bar 5 and the connecting steel bar 6 are annular. The inner diameter value of the load-bearing steel bar 5 is greater than the outer diameter value of the third fixing steel bar 9, and the diameter value of the connecting steel bar 6 is greater than the diameter value of the load-bearing steel bar 5.

[0035] The load-bearing steel bar 5 and the connecting steel bar 6 are beneficial to the fixing of the fourth fixing steel bar 10, preventing the individual fourth fixing steel bar 10 from deforming and impacting the base steel cage when the external force exceeds its load-bearing capacity. The load-bearing steel bar 5 and the connecting steel bar 6 connect it up, down, inside and outside effectively, enabling the whole to absorb the external force.

[0036] Among them, there are four groups of steel bar cages composed of vertical steel bars 1. The lower end of the fixing steel bar 1 at the bottom still has the length of the vertical steel bar 1 extending out. The upper end of the steel bar cage is connected by the first transverse steel bar 7 and the second transverse steel bar 8. The diameter values of the first transverse steel bar 7 and the second transverse steel bar 8 are equal to the spacing values between the vertical steel bars 1.

[0037] The vertical steel bars 1 extending out at the lower end facilitate the embedding of the steel bar cage into the ground to complete the fixation and increase the stability. The connection of the steel bar cages by the first transverse steel bar 7 and the second transverse steel bar 8 is beneficial to the dispersion of the external forces received between the piles and increases the overall stability.

[0038] The working principle and usage process of the present utility model:

[0039] First, determine the positions where piles need to be driven at the construction site, dig the required pit holes in advance, then prepare a vertical steel bar 1, weld the second fixing steel bar 3 at the preset position, and then weld and fix the remaining vertical steel bars 1 along the outside of the second fixing steel bar 3. After completion, weld and fix the support steel bars 4 between the second fixing steel bars 3, and then weld and fix the first fixing steel bars 2 at equal intervals on the outside of the vertical steel bars 1. Then, weld the fourth fixing steel bars 10 at equal angles at the upper end of the third fixing steel bars 9, then weld the third fixing steel bars 9 at the upper end of the vertical steel bars 1. Then, prepare the bearing steel bars 5 at the positions of the pit holes, vertically put the vertical steel bars 1 into the pit holes, and the vertical steel bars 1 extending out at the lower end are embedded into the ground to complete the fixation. Then, the lower ends of the fourth fixing steel bars 10 contact the bearing steel bars 5 at the ground position to complete the fixed welding. Then, weld the connecting steel bars 6 at the upper ends of the fourth fixing steel bars 10. Repeat this process to complete the welding of the pile foundation, and then place the first transverse steel bars 7 and the second transverse steel bars 8 in the gaps of the vertical steel bars 1, and complete the fixed connection by welding. Finally, complete the pouring to complete the structure of the pile foundation.

[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pile foundation structure for a multi-layered bearing platform, comprising vertical steel bars (1), characterized in that: An external fixing reinforcement bar one (2) is fixedly connected to the outside of the vertical reinforcement bar (1), an internal fixing reinforcement bar two (3) is fixedly connected to the inside of the vertical reinforcement bar (1), a supporting reinforcement bar (4) is fixedly connected to the surface of the fixing reinforcement bar two (3), an upper end outside of the vertical reinforcement bar (1) is fixedly connected to a fixing reinforcement bar three (9), an upper end of the fixing reinforcement bar three (9) is fixedly connected to a fixing reinforcement bar four (10), a transverse reinforcement bar one (7) is fixedly connected to the inside of the upper end of the vertical reinforcement bar (1), a transverse reinforcement bar two (8) is fixedly connected to the inside of the upper end of the vertical reinforcement bar (1), a load-bearing reinforcement bar (5) is fixedly connected to the lower end of the fixing reinforcement bar four (10), and a connecting reinforcement bar (6) is fixedly connected to the upper end of the fixing reinforcement bar four (10).

2. The pile foundation structure of a multi-layered bearing platform according to claim 1, characterized in that: There are eight vertical reinforcement bars (1) evenly distributed in a circular shape. The fixing reinforcement bar one (2) is annular, and the inner diameter value of the fixing reinforcement bar one (2) is equal to the diameter value of the circle formed by the vertical reinforcement bars (1). There are four fixing reinforcement bars one (2) equally spaced on the outside of the vertical reinforcement bars (1).

3. The pile foundation structure of a multi-layered bearing platform according to claim 1, characterized in that: The fixing reinforcement bar two (3) is annular, and the outer diameter value of the fixing reinforcement bar two (3) is equal to the inner diameter value of the circle formed by the vertical reinforcement bars (1). There are four fixing reinforcement bars two (3) equally spaced inside the vertical reinforcement bars (1).

4. A pile foundation structure for a multi-layered bearing platform according to claim 1, characterized in that: There are three supporting reinforcement bars (4) located between the evenly distributed fixing reinforcement bars two (3). Adjacent supporting reinforcement bars (4) are symmetrically arranged up and down with respect to the common connecting fixing reinforcement bar two (3).

5. A pile foundation structure for a multi-layered bearing platform according to claim 1, characterized in that: The fixing reinforcement bar three (9) is annular and its inner diameter value is equal to the outer diameter value of the circle formed by the vertical reinforcement bars (1). The diameter value of the fixing reinforcement bar three (9) is greater than the diameter value of the fixing reinforcement bar one (2).

6. The pile foundation structure of a multi-layered pile cap according to claim 1, wherein: There are twelve fixing reinforcement bars four (10) angularly distributed on the upper end of the fixing reinforcement bar three (9). The shape of the fixing reinforcement bar four (10) is "L".

7. A pile foundation structure for a multi-layered bearing platform according to claim 1, characterized in that: Both the load-bearing reinforcement bar (5) and the connecting reinforcement bar (6) are annular. The inner diameter value of the load-bearing reinforcement bar (5) is greater than the outer diameter value of the fixing reinforcement bar three (9). The diameter value of the connecting reinforcement bar (6) is greater than the diameter value of the load-bearing reinforcement bar (5).

8. The pile foundation structure of a multi-layered bearing platform according to claim 1, characterized in that: There are four groups of steel bar cages formed by the vertical reinforcement bars (1). The lower end of the lowermost fixing reinforcement bar one (2) still has a length where the vertical reinforcement bar (1) extends. The upper end of the steel bar cage is connected by the transverse reinforcement bar one (7) and the transverse reinforcement bar two (8). The diameter values of the transverse reinforcement bar one (7) and the transverse reinforcement bar two (8) are equal to the spacing value between the vertical reinforcement bars (1).

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