CN204212145U - A kind of precast concrete combination sheet pile - Google Patents

Abstract

The utility model discloses a kind of precast concrete combination sheet pile, by polylith shape, structure, identical and interconnective monomer sheet pile forms, feature is that monomer sheet pile comprises the curvilinear pile body of cross section, the pile crown portion of pile body is vertically arranged with cylindric fin, the stake afterbody of pile body is vertically arranged with cylindric through hole, cylindric fin on wherein one block of monomer sheet pile in two blocks of adjacent monomer sheet piles and the cylindric through hole on another block monomer sheet pile suitable, the edge of cylindric fin is provided with the groove for sealing of being in the milk vertically; Advantage is that anti-crack ability is strong, stagnant water effect good.

Description

A prefabricated concrete composite sheet pile

technical field

The utility model relates to a sheet pile, in particular to a prefabricated concrete composite sheet pile.

Background technique

As my country's national economy continues to grow at a high speed, the national engineering construction is also advancing by leaps and bounds. In order to ensure the stability of the building, the building foundation must meet the requirements of deep embedding underground. As a foundation treatment method, prefabricated piles are widely used in construction, water conservancy, road and bridge engineering. In general construction projects, prefabricated piles mainly bear vertical axial loads, but in docks, bridges, high-rise tower buildings, retaining buildings and seismic engineering, prefabricated piles also need to withstand wind force, wave force, earth pressure and earthquakes. Affect equal horizontal loads. Prefabricated piles generally include prefabricated concrete sheet piles and prefabricated prestressed reinforced concrete sheet piles. The precast concrete sheet pile needs to be driven into the required place during the construction process. However, during the process of driving the precast concrete sheet pile, due to the vibration of the hammer, the pile body is often prone to cracks, which affects both the appearance and the use. . Although the prefabricated prestressed reinforced concrete sheet pile can overcome the problem of cracks caused by the tensile force of the prefabricated concrete sheet pile during the hammering process of the pile sinking, but due to the error in the sinking process, gaps are prone to appear between the piles, which affects the pile. Waterstop effect between piles.

Contents of the invention

The technical problem to be solved by the utility model is to provide a prefabricated concrete composite sheet pile with strong crack resistance and good water-stopping effect.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a prefabricated concrete composite sheet pile, which is composed of a plurality of single sheet piles with the same shape and structure and connected to each other. Curved pile body, the pile head of the pile body is provided with cylindrical convex ribs in the longitudinal direction, the pile tail of the pile body is provided with cylindrical through holes in the longitudinal direction, and the two adjacent single pieces The cylindrical rib on one of the single sheet piles in the body sheet pile is adapted to the cylindrical through hole on the other single sheet pile, and the edge of the cylindrical rib is axially Grooves for grout sealing are provided.

The diameter of the bottom surface of the cylindrical rib is greater than or equal to 1/2 of the thickness of the pile body and less than or equal to 2/3 of the thickness of the pile body. Stability of fit between body sheet piles.

The cylindrical rib is connected to the pile head of the pile body through an intermediate connecting body, and the thickness of the intermediate connecting body is greater than or equal to 1/3 of the diameter of the bottom surface of the cylindrical rib and less than Or equal to 1/2 of the diameter of the bottom surface of the cylindrical rib; the setting of the intermediate connector makes a structural transition between the cylindrical rib and the pile body, which increases the overall firmness, and the thickness of the intermediate connector is set It is 1/3~1/2 of the diameter of the bottom surface of the cylindrical rib, which not only ensures the stability of the single sheet pile itself, but also makes the connection between two adjacent single sheet piles only through nested It is connected and matched by the method, so it is not easy to loosen, and it is firm and reliable.

A tie bar is arranged in the intermediate connecting body, one end of the tie bar extends to the inside of the cylindrical rib, and the other end of the tie bar extends to the inside of the pile body; the tie bar Connecting the cylindrical rib and the interior of the pile body further improves the overall strength of the single sheet pile.

The end surface of the pile tail of the pile body is longitudinally provided with an intermediate connection port communicating with the cylindrical through hole, and one of the two adjacent single-piece sheet piles is one of the single-piece sheet piles. The intermediate connecting port on the body sheet pile is adapted to the intermediate connecting body on the other single sheet pile; the cooperation between the intermediate connecting body and the intermediate connecting port increases the gap between two adjacent single sheet piles. The contact area of the connection can be increased, so as to further improve the overall crack resistance of the combined sheet pile and improve the water-stop effect.

The cylindrical rib is a round steel pipe; the round steel pipe is not only strong, but also the manufacturing process of the round steel pipe is simple, and its hollow structure can effectively reduce the weight of the single sheet pile during the sinking construction process, and it can be re-injected after grouting. It can form a whole, which does not affect the integrity and overall strength of the single sheet pile, and can increase the connection strength, thereby achieving a better anti-seepage effect.

The cross-section of the pile body is in the shape of an S curve. the

Compared with the prior art, the utility model has the following advantages: (1) The structure of the pile body, cylindrical ribs, cylindrical through holes and grooves is simple, and can be formed by one-time pouring of reinforced concrete, which can effectively save materials ; (2) During construction, adjacent single sheet piles are connected to form a combined sheet pile through the mutual nesting of cylindrical convex ribs and cylindrical through holes, and each single sheet pile is driven in piece by piece through mechanical pile sinking. In this process, the occlusion between the cylindrical rib and the cylindrical through hole can freely slide up and down according to the construction needs, so it can effectively avoid the problem of cracks in the pile body when hammering and vibrating. The grooves are grouted and sealed, and the combined sheet pile becomes a seamless whole, which is beneficial to improve the anti-seepage performance and the water-stop effect; (3) The single sheet pile includes a curved pile body in cross section, and a curved pile The body can transform the pressure acting on the curve into the vertical direction and tangential direction of the curve, while only the force in the vertical direction directly acts on the pile body, and the force in the tangential direction is transmitted to the foundation on both sides of the pile body through the elastic action of the curved structure. Therefore, the direct force on the pile body is greatly reduced, and the material consumption can be effectively saved under the same strength requirement. In addition, for the pile body of the same length, the bearing area of the curved pile body is larger than that of the ordinary linear sheet pile. , which is conducive to improving the overall strength of the sheet pile and improving the crack resistance; (4) In summary, the precast concrete composite sheet pile can be widely used in various construction projects, especially for slope support, foundation pit enclosure, Soft foundation reinforcement works.

Description of drawings

Fig. 1 is a structural schematic diagram of a single sheet pile;

Figure 2 is a schematic cross-sectional view of a single sheet pile;

Fig. 3 is a structural schematic diagram of the combined sheet pile of the embodiment (only four single sheet piles are shown in the figure);

Fig. 4 is a schematic cross-sectional view of the combined sheet pile of the embodiment (only four single sheet piles are shown in the figure).

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 4, a prefabricated concrete composite sheet pile is composed of multiple single sheet piles 1 with the same shape and structure and are connected to each other. Only four single sheet piles 1 are shown in Figures 3 and 4. The effect after connection; the single sheet pile 1 includes a pile body 11 with an S-curved cross section, and the pile head of the pile body 11 is provided with a cylindrical rib 12 along the longitudinal direction. Here, the diameter of the bottom surface of the cylindrical rib 12 is _d1 is _1/2 of the thickness d2 of the pile body 11; the cylindrical rib 12 is connected with the pile head of the pile body 11 through the intermediate connecting body 13, and the thickness _d3 of the intermediate connecting body 13 is cylindrical convex 1/3 of the diameter of the bottom surface of the rib 12, a tie bar (not shown in the figure) is arranged in the intermediate connecting body 13, one end of the tie bar extends to the inside of the cylindrical rib 12, and the other end of the tie bar extends to the pile body 11 inside of the pile head; the pile tail of the pile body 11 is provided with a cylindrical through hole 14, and the cylindrical rib 12 on one of the two adjacent single sheet piles 1 is aligned with the The cylindrical through hole 14 on the other single sheet pile 1 is compatible; the end face of the pile tail of the pile body 11 is longitudinally provided with an intermediate connection port 15 communicating with the cylindrical through hole 14, and the adjacent two The intermediate connection port 15 on one of the single sheet piles 1 is adapted to the intermediate connection body 13 on the other single sheet pile 1; the edge of the cylindrical rib 12 is arranged along the axial direction There are grooves 16 for grout sealing.

The use of the prefabricated concrete composite sheet pile is as follows: During construction, the adjacent single sheet piles 1 are assembled to form a composite sheet pile through the nesting of cylindrical ribs 12 and cylindrical through holes 14 (for transportation conditions) The construction team, the assembly process can be carried out in the factory, and for the construction team with insufficient transportation conditions, the assembly process can be carried out on site), the combined sheet piles are placed in place, and each single sheet pile is placed in place by mechanical pile sinking. The piles 1 are driven in piece by piece, and the grooves 16 are grouted and sealed after all the individual sheet piles 1 are sunk, so that multiple individual sheet piles 1 form an anti-seepage whole. In specific construction and application, the cylindrical rib 12 adopts a round steel pipe. When a round steel pipe is used, the groove 16 is integrally arranged in the middle of the edge of the round steel pipe and on the extension line of the intermediate connecting body 13 during the manufacturing process. When the round steel pipe is used, due to its hollow structure, after assembling and sinking, both the round steel pipe and the groove must be grouted, so that the combined sheet pile becomes an anti-seepage whole and plays a better water stop Effect.

Claims (7)

1. A prefabricated concrete composite sheet pile is made up of a plurality of single sheet piles which are identical in shape and structure and are connected to each other. It is characterized in that the single sheet pile includes a curved pile body in cross section, The pile head of the pile body is provided with a cylindrical rib along the longitudinal direction, and the pile tail of the pile body is provided with a cylindrical through hole along the longitudinal direction, and one of the two adjacent single sheet piles is described The cylindrical rib on the single sheet pile is adapted to the cylindrical through hole on the other single sheet pile, and the edge of the cylindrical rib is axially provided with a groove for grouting and sealing. 2. A prefabricated concrete composite sheet pile according to claim 1, characterized in that the diameter of the bottom surface of the cylindrical rib is greater than or equal to 1/2 of the thickness of the pile body and less than or equal to the thickness of the pile body 2/3 of the thickness of the pile body. 3. A prefabricated concrete composite sheet pile according to claim 1 or 2, characterized in that said cylindrical rib is connected to the pile head of said pile body through an intermediate connector, and said intermediate connection The thickness of the body is greater than or equal to 1/3 of the diameter of the bottom surface of the cylindrical rib and less than or equal to 1/2 of the diameter of the bottom surface of the cylindrical rib. 4. A kind of prefabricated concrete composite sheet pile according to claim 3, it is characterized in that a tie bar is arranged in the said intermediate connecting body, and one end of the said tie bar extends to the inside of the said cylindrical rib, The other end of the tie rod extends to the inside of the pile body. 5. A kind of prefabricated concrete composite sheet pile according to claim 4, characterized in that the end face of the pile tail of the pile body is longitudinally provided with an intermediate connection port communicating with the cylindrical through hole, The intermediate connection port on one of the two adjacent individual sheet piles is adapted to the intermediate connection body on the other individual sheet pile. 6. A prefabricated concrete composite sheet pile according to claim 1 or 5, characterized in that the cylindrical rib is a round steel pipe. 7. A prefabricated concrete composite sheet pile according to claim 1 or 5, characterized in that the cross-section of the pile body is in an S-curve shape.