Box culvert supporting stand column pile

Abstract

The utility model discloses a box culvert supporting stand column pile which comprises a pile hole, a reinforcement cage and a lattice steel column, a pit bottom reinforcing pile is arranged in the pile hole, and the pit bottom reinforcing pile is annularly arranged on the inner side wall of the pile hole; the reinforcement cage is placed in the pile hole, and the pit bottom reinforcing pile surrounds the outer side of the reinforcement cage; one end of the lattice steel column is sleeved with the reinforcement cage, the lattice steel column is connected with the reinforcement cage in a welded mode, the pit bottom reinforcing pile annularly arranged on the inner side wall of the pile hole is arranged in the pile hole, the side wall of the pile hole can be reinforced, the strength and the deformation modulus of the pile hole are improved, and therefore the problem that construction of the stand column pile is not facilitated due to the fact that the soil layer of the pile hole is soft is solved.

Description

Technical Field

[0001] The utility model relates to a box culvert supporting column pile. Background Art

[0002] Column piles are a common support form in foundation pit support projects. Currently, most common column pile construction methods are as described in the patent document of Chinese Patent Publication No. CN111021343A, including excavating pile holes, welding steel structures and steel cages, and finally pouring concrete into the pile holes to form column piles.

[0003] If the existing column piles are opened in the foundation with soft soil, the soft soil layer will be easily deformed, which is not conducive to the construction of the column piles. Utility Model Content

[0004] The utility model aims to provide a box culvert support column pile to address the deficiencies in the prior art, which can reinforce the side walls of the pile hole, increase the strength and deformation modulus of the pile hole, and thus ensure the subsequent construction of the column pile.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A box culvert supporting column pile, comprising

[0007] pile hole;

[0008] Steel cage, used to restrain the pile body and increase its tensile strength;

[0009] Lattice steel columns;

[0010] The pile hole includes pit bottom reinforcement piles, which are arranged around the inner wall of the pile hole; a steel cage is placed in the pile hole, and the pit bottom reinforcement piles surround the outer side of the steel cage; one end of the lattice steel column is sleeved in the steel cage, and the lattice steel column is welded to the steel cage.

[0011] By adopting the above technical solution, a pit bottom reinforcement pile arranged in a ring around the inner wall of the pile hole is arranged in the pile hole, which can reinforce the side wall of the pile hole, increase the strength and deformation modulus of the pile hole, thereby avoiding the problem of poor construction of column piles due to weak soil layer in the pile hole.

[0012] Furthermore, the pit bottom reinforcement piles are double-axis cement mixing piles.

[0013] Furthermore, the steel cage is provided with a densified area, and the density of the steel cage hoop reinforcement in the densified area is 100mm.

[0014] Furthermore, the cross section of the lattice steel column is a regular quadrilateral with a side length of 400 mm to 500 mm.

[0015] Furthermore, column pile concrete is poured into the pile hole.

[0016] Furthermore, a bracket is provided on one side of the lattice steel column.

[0017] Furthermore, the bracket and the lattice steel column are welded by using E50 welding rods.

[0018] Furthermore, the lattice steel column is provided with a water stop plate, which is fully welded and connected to the bottom end of the lattice steel column at a position 5000 mm to 5500 mm upward.

[0019] Furthermore, the water stop plate includes an outer baffle plate and an inner baffle plate, the outer baffle plate is arranged on the outer side wall of the lattice steel column, and the inner baffle plate is arranged on the inner side wall of the lattice steel column.

[0020] Furthermore, an angle steel perpendicular to the water stop plate is provided on the upper surface of the water stop plate, the angle steel is welded to the upper surface of the water stop plate, and the inner side wall of the angle steel is welded to the outer wall of the lattice steel column.

[0021] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0022] 1. The utility model reinforces the inner wall of the pile hole, increases the strength and deformation modulus of the pile hole, and avoids the problem that the weak soil layer in the pile hole is not conducive to the construction of the column pile;

[0023] 2. The utility model is provided with a water stop sheet, which can prevent groundwater from seeping upward through the joints of the column piles;

[0024] 3. The water stop plate of the utility model includes an outer stop plate and an inner stop plate, which can form water blocking inside and outside the lattice steel column, thereby increasing the blocking range;

[0025] 4. In the utility model, the water stop plate is welded to the outer wall of the lattice steel column through the angle steel, which increases the connection stability between the water stop plate and the lattice steel column. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the cross-sectional structure of the column pile of the utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the cross section of the middle LL;

[0029] Figure 3 for Figure 1 Schematic cross section of KK;

[0030] Figure 4 It is a cross-sectional schematic diagram of the assembled state of the water stop plate of the utility model;

[0031] Figure 5 It is a cross-sectional schematic diagram of the water stop sheet in Example 2 of the utility model;

[0032] In the figure: 1-pile hole; 11-pit bottom reinforcement pile; 2-reinforcement cage; 3-lattice steel column; 4-bracket;

[0033] 5-water stop plate; 51-outer baffle plate; 52-inner baffle plate; 6-angle steel. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0036] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0037] Example 1

[0038] A box culvert supporting column pile, comprising a pile hole 1;

[0039] In this embodiment, the depth of the pile hole 1 is 15 meters, and the cross-sectional diameter of the pile hole 1 is 700 mm;

[0040] The cross section of the pile hole 1 is circular. Figure 2 shown.

[0041] The pile hole 1 includes a pit bottom reinforcement pile 11, which is annular and arranged on the inner side wall of the pile hole 1. Figure 1 , Figure 2 As shown;

[0042] In this embodiment, the pit bottom reinforcement pile 11 is a double-axis cement mixing pile;

[0043] The double-axis cement mixing pile is a pile mixing method, in which a pile hole 1 is excavated to a predetermined depth using a mixing drill, and then concrete slurry is injected, and after the slurry solidifies, a pit bottom reinforcement pile 11 is formed;

[0044] The pit bottom reinforcement piles 11 can reinforce the inner wall of the pile hole 1, increase the strength and deformation modulus of the pile hole 1, and avoid the problem that the weak soil layer of the pile hole 1 is not conducive to the construction of the column piles.

[0045] A steel cage 2 is placed in the pile hole 1, and pit bottom reinforcement piles 11 surround the outer side of the steel cage 2;

[0046] The steel cage 2 is placed in the pile hole 1 by hoisting;

[0047] The steel cage 2 is provided with a densified area, which is the part of the steel cage 2 located in the pile hole 1, such as Figure 1 As shown;

[0048] The density of the stirrups of the steel cage 2 set as the densified area is increased to 100 mm; by setting the densified area for the steel cage 2, the seismic performance of the column pile body can be improved.

[0049] The column pile comprises a lattice steel column 3, one end of which is sleeved in a steel cage 2. Figure 1 As shown;

[0050] One end of the lattice steel column 3 which is sleeved in the steel cage 2 is welded and connected to the steel cage 2;

[0051] The cross section of the lattice steel column 3 is a regular quadrilateral. Figure 2 , Figure 3 As shown;

[0052] In this embodiment, the side length of the cross section of the lattice steel column 3 is 400 mm.

[0053] The pile hole 1 is filled with column pile concrete with underwater strength C30;

[0054] In actual construction, after the lattice steel column 3 and the steel cage 2 are welded, they are lowered to the pile bottom elevation as a whole, and then the column pile concrete can be poured into the pile hole 1.

[0055] A bracket 4 is provided on one side of the lattice steel column 3. Figure 1 As shown;

[0056] One side of the bracket 4 is welded to the outer side wall of the lattice steel column 3;

[0057] In this embodiment, the bracket 4 is welded to a position 4.4 meters above the bottom of the lattice steel column 3 .

[0058] The lattice steel column 3 is provided with a water stop plate 5, and the water stop plate 5 includes an outer stop plate 51 and an inner stop plate 52;

[0059] The outer baffle 51 is formed with a corner, and is in a 7-shape as a whole. Figure 4 As shown;

[0060] The inner edge of the outer baffle 51 can fit with the outer wall of a corner of the lattice steel column 3;

[0061] In this embodiment, the four outer baffles 51 can be assembled together, attached to and surround the outer side wall of the lattice steel column 3;

[0062] The inner edge of the outer baffle 51 is fully connected to the outer wall of the lattice steel column 3 by welding with an E50 welding rod;

[0063] The shape of the inner baffle 52 corresponds to that of the outer baffle 51, and its outer edge can fit with the inner side wall of a corner of the lattice steel column 3;

[0064] In this embodiment, the four inner baffles 52 can be assembled with each other and fit on the inner wall of the lattice steel column 3 to form a water barrier on the inner side of the lattice steel column 3;

[0065] The outer edge of the inner baffle 52 is fully connected to the inner wall of the lattice steel column 3 by welding with an E50 welding rod;

[0066] The outer baffle plate 51, the inner baffle plate 52 and the lattice steel column 3 are welded in a full-welding manner, so that the water stop plate 5 forms a water barrier both inside and outside the lattice steel column 3, which prevents underground water from seeping upwards, further ensuring that water will not seep out of the welds, thereby improving the stability of the water barrier.

[0067] In this embodiment, the water stop plate 5 is welded 5000 mm above the bottom end of the lattice steel column 3 .

[0068] Example 2

[0069] This embodiment is different from the embodiment 1 in that, in this embodiment, the side length of the cross section of the lattice steel column 3 is 500 mm.

[0070] In this embodiment, the water stop plate 5 is welded 5500 mm above the bottom end of the lattice steel column 3 .

[0071] In this embodiment, the upper surface of the water stop plate 5 is provided with an angle steel 6 perpendicular to the water stop plate 5. Figure 5 As shown;

[0072] The bottom edge of the angle steel 6 is welded to the upper surface of the water stop plate 5, and the inner side wall of the angle steel 6 is welded to the outer side wall of the lattice steel column 3;

[0073] The inner side wall of the angle steel 6 corresponds to the corner shape of the lattice steel column 3 , and the connection stability between the water stop sheet 5 and the lattice steel column 3 is increased by welding the angle steel 6 and the lattice steel column 3 .

[0074] Example 3

[0075] This embodiment is different from the embodiment 1 in that, in this embodiment, the side length of the cross section of the lattice steel column 3 is 450 mm.

[0076] In this embodiment, the water stop plate 5 is welded 5200 mm above the bottom end of the lattice steel column 3 .

[0077] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A box culvert support column pile, comprising Pile hole (1); A steel cage (2) is used to constrain the pile body and increase its tensile strength; Lattice steel columns (3); Features: The pile hole (1) comprises a pit bottom reinforcement pile (11), and the pit bottom reinforcement pile (11) is arranged around the inner wall of the pile hole (1); the steel cage (2) is placed in the pile hole (1), and the pit bottom reinforcement pile (11) surrounds the outer side of the steel cage (2); one end of the lattice steel column (3) is sleeved in the steel cage (2), and the lattice steel column (3) is welded to the steel cage (2).

2. A box culvert support column pile according to claim 1, characterized in that: The pit bottom reinforcement piles (11) are double-axis cement mixing piles.

3. A box culvert support column pile according to claim 1, characterized in that: The steel cage (2) is provided with a densified area, and the density of the steel cage hoop reinforcement in the densified area is 100 mm.

4. A box culvert support column pile according to claim 1, characterized in that: The cross section of the lattice steel column (3) is a regular quadrilateral with a side length of 400 mm to 500 mm.

5. The box culvert support column pile according to claim 1, characterized in that: The pile hole (1) is filled with column pile concrete.

6. A box culvert support column pile according to claim 1, characterized in that: A bracket (4) is provided on one side of the lattice steel column (3).

7. A box culvert support column pile according to claim 6, characterized in that: The bracket (4) and the lattice steel column (3) are welded by using an E50 welding rod.

8. The box culvert support column pile according to claim 1, characterized in that: The lattice steel column (3) is provided with a water stop plate (5), and the water stop plate (5) is fully welded to the bottom end of the lattice steel column (3) at a position 5000 mm to 5500 mm upward.

9. A box culvert support column pile according to claim 8, characterized in that: The water stop plate (5) comprises an outer stop plate (51) and an inner stop plate (52); the outer stop plate (51) is arranged on the outer side wall of the lattice steel column (3); and the inner stop plate (52) is arranged on the inner side wall of the lattice steel column (3).

10. A box culvert support column pile according to claim 8, characterized in that: An angle steel (6) perpendicular to the water stop plate (5) is provided on the upper surface of the water stop plate (5); the angle steel (6) is welded to the upper surface of the water stop plate (5); and the inner side wall of the angle steel (6) is welded to the outer wall of the lattice steel column (3).

Images