Pipe pile can be made according to the load characteristics of various sections conducive to the improvement of bearing capacity. Pipe pile is widely used in various fields. This article mainly introduces the advantages of pipe pile.
The advantages of pipe pile
The advantages of spiral pipe pile
The advantages of seamless pipe pile
(1) The pile ends of pipe and box pile are usually made into open type to reduce the soil squeezing effect in the process of pile sinking. When the axial compressive strength of the pile wall is insufficient, the soil in the pipe and the box can be removed and filled with concrete. The amount of soil discharged in the h-shaped pipe pile is small and the penetration performance is good. In addition, h-shaped pile has a large specific surface area, which can provide a large frictional resistance when it is used to bear vertical loads. In order to increase the friction resistance of pile, welding steel plate or section steel can be added to the flange or web of h-shaped pipe pile. For pipe pile bearing lateral load, the section stiffness and strength can be partially strengthened according to the bending moment changing along the pile body.
(2) Pipe pile is generally used seamless pipe pile, or it can be welded from steel plate. There are two types of pipe pile: open-mouth type and closed-mouth type. In order to enable the pile to penetrate through the hard soil layer or the soil containing boulders without damaging the pile end, the pile end can be reinforced by welding the round reinforcing ring to thicken the dowel end and welding the cross rib to strengthen the dowel end. The closed end of the pile is to wear the dowel boots at the end of the pile.
(3) The end of the pipe pile can bear the impact force from the dowm through the dowm hat. According to the strength of the impact force and the resistance of the foundation, the end of the pipe pile can be kept open or properly strengthened.
(4) Pipe pile can be used as anticorrosive treatment for external surface coating and cathodic protection.
Spiral pipe pile production process is simple, high production efficiency, low cost, rapid development. The strength of the spiral pipe pile is generally higher than that of the straight welded pipe, and the welded pipe with a larger diameter can be produced with a narrower blank, and the welded pipe with a different diameter can be produced with a blank of the same width. However, compared with the straight pipe of the same length, the weld length is increased by 30-100%, and the production speed is lower.
Spiral pipe pile is widely used in chemical industry, electric power industry, agricultural irrigation, water engineering, petrochemical industry and urban construction. It is one of the 20 key products developed in China.
For liquid transportation: water supply and drainage. For gas transport: gas, steam, liquefaction. For structural use: as pile driving pipe, as a bridge;Wharf, road, building structure with a wide range of uses such as pipe.
Modern Seamless pipe pile has many production uses. Seamless pipe pile(Seamless Steel Tube) is a kind of long Steel with hollow section and no joints around it. Seamless pipe pile has a hollow section and is widely used as a pipe to transport fluids, such as oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, pipe pile is a kind of economic section steel with the same bending and torsional strength and light weight. It is widely used in the manufacturing of structural parts and mechanical parts, such as oil drill pipe, automobile transmission shaft, bicycle frame and steel scaffolding used in construction. Seamless pipe pile is widely used to manufacture annular parts, which can improve the material utilization rate, simplify the manufacturing process, and save materials and processing hours. For example, rolling bearing ring, jack sleeve and so on. Seamless pipe pile is also an indispensable material for all kinds of conventional weapons. Seamless pipe pile is used for pipe and barrel manufacturing. Seamless pipe pile can be divided into round pipe and shaped pipe according to the shape of cross-sectional area. Since the circle has the largest area with equal circumferences, more fluid can be transported with a circular tube. In addition, when the ring section is under internal or external radial pressure, the force is more uniform, so the vast majority of pipe pile is a round pipe.
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