Open type mold for producing ultra-high performance concrete (UHPC) hollow pipe pile

Abstract

The utility model discloses an open type mould for producing an ultra-high performance concrete (UHPC) hollow pipe pile, which is in a cylindrical shape formed by a left semicircular mould and a right semicircular mould, a hollow pipe is axially arranged at the center in the cylindrical shape, and the hollow pipe is supported by a supporting piece; the lower ends of the left semicircular die and the right semicircular die are hinged, and the upper ends of the left semicircular die and the right semicircular die are movably butted; the mold has the advantages of being simple in structure, easy to manufacture and install and capable of improving production efficiency and opening size precision, and compared with a traditional UHPC pipe pile production technology mold, centrifugation is not needed, and the mold is more uniform. The concrete pipe pile opening mold is convenient to operate, high in production efficiency, good in finished product quality, long in service life and high in universality, and provides powerful support for large-scale production and application of concrete pipe piles.

Description

Technical Field

[0001] The utility model relates to the field of pipe pile production, and particularly relates to an open-type mold for producing ultra-high performance concrete (UHPC) hollow pipe piles. Background Art

[0002] Ultra-high performance concrete (UHPC) pipe piles are widely used in various construction projects due to their high strength, high durability, and excellent mechanical properties. However, there are some problems in the traditional UHPC pipe pile production process, such as low production efficiency, inaccurate opening size, and the need for centrifugation.

[0003] At present, there are mainly two methods for centrifugally forming the hollow of pipe piles. One is the diaphragm centrifugation technology used when pouring concrete into a hollow pipe. The hollow pipe is placed in a steel mold. After the model rotates to a certain speed, the model and the hollow pipe are separated by a plug, and then concrete is poured. The advantage of this method is to save concrete, greatly reduce the structural self-weight, and ensure the strength at the same time. The other is the drilling centrifugal forming technology, which injects concrete from the inside to the outside of the pipe through a hollow pipe by a high-power drilling rig. While the pipe is rotating at a high speed, the centrifugal force is used to make the concrete move closer to the pipe wall, forming an iron shell inner core with a hollow iron skeleton in the middle.

[0004] After centrifugally forming the pile, the thickness of the protective layer of the reinforced concrete is low, and the quality of the formed pile cannot be controlled. After long-term production, the steel mold and the centrifuge are deformed. After the centrifugation enters a high speed, the steel mold jumps. This kind of jump is an irregular impact, which ultimately makes the inner wall of the pipe pile not hard, and the stones cannot enter the outer layer, affecting the quality of the pile. When the pipe pile is constructed, it is also easy to cause the concentration of hammering stress and break the pile head. Summary of the Invention

[0005] The purpose of the utility model is to design an open-type mold for producing ultra-high performance concrete (UHPC) hollow pipe piles. The mold of the utility model has the advantages of simple structure, easy manufacturing and installation, and does not require centrifugation to form pipe piles.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] An open-type mold for producing ultra-high performance concrete (UHPC) hollow pipe piles, characterized in that: the mold is composed of a left semi-circular mold and a right semi-circular mold to form a cylindrical shape. A hollow pipe is axially arranged at the center inside the cylindrical shape, and the hollow pipe is supported by a support member; the lower ends of the left semi-circular mold and the right semi-circular mold are hinged, the upper ends are movably butted, and a triangular base is installed at the bottom of the mold.

[0008] Furthermore, the upper ends of both the left semi-circular mold and the right semi-circular mold are provided with connecting and fixing convex edges, and bolt holes are provided on the convex edges. After bolts pass through the bolt holes of the two convex edges, they are fixed.

[0009] Further, the left semi-circular mold and the right semi-circular mold are specifically connected by a shaft to form a hinge structure.

[0010] Further, perforated side plates are added to both sides of the mold, which can facilitate the insertion of steel bars and fix the positions of the steel bars.

[0011] Further, the support member is a plastic snap support. One end of the hollow tube is inserted into the hinge portion, and the other end is inserted into the hollow tube.

[0012] Further, the mold is made of a metal material, and reinforcing ribs are provided on the surface of the mold.

[0013] The following beneficial effects can be obtained through the above technical solutions:

[0014] The utility model has the advantages of simple structure, easy manufacturing and installation, improved production efficiency and opening size accuracy. Compared with the traditional UHPC pipe pile production process mold, centrifugation is not required and it is more uniform. The opening mold of the concrete pipe pile of the utility model is convenient to operate, has high production efficiency, good finished product quality, and has a long service life and high versatility, providing strong support for the large-scale production and application of concrete pipe piles. Description of the Drawings

[0015] Figure 1 It is a side view of the opening mold;

[0016] Figure 2 It is a view in the open state.

[0017] Figure 3 It is a diagram of the hinge relationship between the left semi-circular mold and the right semi-circular mold.

[0018] Figure 4 It is a top view of the hollow tube.

[0019] In the figure: 1, right semi-circular mold; 2, left semi-circular mold; 3, convex edge; 4, bolt; 5, support member; 6, hollow tube; 7, base, 8, support member slot, 9, shaft, 10, slot hole, 11, fixed bushing. Detailed Embodiments

[0020] The following further describes the present utility model with reference to the drawings:

[0021] As Figure 1-2 shown, an opening mold for producing ultra-high performance concrete UHPC hollow pipe piles is composed of a left semi-circular mold 2 and a right semi-circular mold 1 to form a cylindrical shape. A hollow tube 6 is axially provided in the center of the cylindrical shape, and the hollow tube is supported by a support member 5; the lower ends of the left semi-circular mold and the right semi-circular mold are hinged, and the upper ends are movably butted, and a triangular base 7 is installed at the bottom of the mold.

[0022] When pouring UHPC, the docking part of the left semi-circular mold and the right semi-circular mold is in an open state ( Figure 2 as shown). After the pouring of UHPC is completed, the left semi-circular mold and the right semi-circular mold are butted and closed, and the exposed part is smeared into an arc shape with a grinding shovel. The support member is used to support the hollow tube 6. The purpose is to pour UHPC to form a hollow pipe pile, and the mold is steam-cured. After the curing is completed, it can be directly demolded. Among them, the support member and the hollow tube are integrated with the pipe pile, do not need to be removed, and do not affect the quality of the pipe pile. The advantages of the present invention are simple structure, easy to manufacture and install, and high-quality UHPC pipe pile products can be produced without the need for a centrifugal process.

[0023] Based on the above embodiments: The upper ends of the left semi-circular mold and the right semi-circular mold are both provided with connecting and fixing convex edges 3, and bolt holes are provided on the convex edges. After the bolts 4 pass through the bolt holes of the two convex edges, they are fixed. The left semi-circular mold and the right semi-circular mold are specifically connected by an axis to form a hinged structure. There are several bolt holes on the left semi-circular mold and the right semi-circular mold, and they are evenly arranged, which is convenient for closing the entire mold; the bottom hinged structure is realized by an axis method.

[0024] Based on the above embodiments: Figure 3 and 4 as shown, the bushing of the left semi-circular mold, the bushing of the right semi-circular mold, and the fixed bushing 11 are all sleeved on the shaft 9 to form a hinged relationship in the shape of a hinge. Among them, a support member slot 8 is provided on the fixed bushing 11, and a slot hole 10 is also opened on the corresponding hollow tube 6. In this way, the bottom of the support member is inserted into the support member slot 8, and the upper end is inserted into the slot hole 10 to ensure the stability and reliability of the connection.

[0025] Based on the above embodiments: Perforated side plates are added to both sides of the mold. A number of holes are evenly arranged on the side plates. The side plate structures on both sides are exactly the same. The perforated side plates can facilitate the insertion of steel bars and fix the positions of the steel bars, and prevent ultra-high performance concrete from leaking out from both sides. In this way, ultra-high performance concrete can be poured with confidence.

[0026] Based on the above embodiments: A triangular base is installed at the bottom of the mold to meet the movement range of the semi-circular mold. On the one hand, the bottom of the triangle is stable, and on the other hand, there can be extra empty spaces on both sides to realize the rotation range of the semi-circular mold.

[0027] Based on the above embodiments: The support member is supported by plastic buckles, the hollow tube is made of plastic material, the mold is made of metal material, and reinforcing ribs are provided on the surface of the mold. A convex plug is designed below the fixed bushing 11, and a jack is correspondingly designed on the triangular base. Therefore, the entire open mold can be inserted into the jack of the triangular base through the convex plug.

[0028] The above are all preferred embodiments of the present utility model. For those of ordinary skill in the art, without departing from the principle of the present utility model, modifications to various equivalent forms of the present utility model all fall within the protection scope of the appended claims of this application.

Claims

1. An open mold for producing ultra-high performance concrete UHPC hollow pipe piles, characterized by: The mold is cylindrically shaped, consisting of a left semicircular mold and a right semicircular mold. A hollow tube is axially arranged in the center of the cylinder, and the hollow tube is supported by a support. The lower ends of the left semicircular mold and the right semicircular mold are hinged, and the upper ends are movably connected. A triangular base is installed at the bottom of the mold.

2. The open mold for producing ultra-high performance concrete (UHPC) hollow pipe piles according to claim 1, characterized in that: The upper ends of the left semicircular mold and the right semicircular mold are both provided with connecting and fixing convex edges, and the convex edges are provided with bolt holes, and the bolts are inserted into the bolt holes of the two convex edges and then fixed.

3. An open mold for producing ultra-high performance concrete (UHPC) hollow pipe piles according to claim 1 or 2, characterized in that: The left semicircular mold and the right semicircular mold body are connected by an axis to form a hinged structure.

4. The open mold for producing ultra-high performance concrete (UHPC) hollow pipe piles according to claim 1, characterized in that: Side plates with holes are added on both sides of the mold.

5. The open mold for producing ultra-high performance concrete (UHPC) hollow pipe piles according to claim 1, characterized in that: The support member adopts a plastic buckle support, one end of the hollow tube is inserted into the hinge part, and the other end is inserted into the hollow tube.

6. The open mold for producing ultra-high performance concrete (UHPC) hollow pipe piles according to claim 1, characterized in that: The mold is made of metal material, and reinforcing ribs are arranged on the surface of the mold.

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