Steel pipe piles are commonly used components in bridge pile foundation construction. It has the advantages of high bearing capacity, flexible piling, and fast construction speed. For complex terrain, steel pipe piles are more suitable for this environment.

1. Steel pile types

Types of steel piles There are currently three types of steel piles commonly used in engineering construction, namely steel pipe piles, shaped steel piles, and steel sheet piles.

1. Compared with other steel piles, steel pipe piles have unique advantages in many aspects. For example, bending stiffness, single pile bearing capacity, and many other aspects.

2. Type I and H-type steel piles are common cross-sectional shapes among shaped steel piles. I-type and H-type steel piles can be used to carry both horizontal and vertical loads.

3. Steel sheet piles come in various forms, and the female and male interface slots on both sides of them have different shapes. After the first one is in place, the second sheet pile takes the notch on the side of the previous sheet pile as the driving part. In this way, multiple sheet piles can form a relatively complete plate along the coast (or river bank). Pile wall. In addition, a group of steel sheet piles can also be used to form a perimeter, or as temporary support protection when excavating foundation pits.

2. Analysis of characteristics of steel pipe piles

1. There are many specifications and a variety of choices. At present, the steel pipe piles on the market have a variety of finalized production specifications. Select the most suitable application from a variety of specifications, so that the advantages of steel pipe piles can be fully utilized to meet the safety of the project. sexual and economic requirements.

2. It has a strong bearing capacity. Most of the steel pipe piles used in project construction at this stage are low-carbon steel. This material has strong capabilities in many aspects such as strength, tensile strength, and compression resistance. After being processed into a steel pipe, it has a high level of bending resistance and is suitable for use in geological environments with strong bearing layers. , so that its stress characteristics can be fully exerted.

3. It is easy to adjust the pile length and improve economic efficiency. The conventional length of each section of steel pipe pile is 6 m, which can be extended by welding. If the burial depth of the bearing layer changes, the steel pipe pile can be carried out according to the pile sinking situation. Welding or cutting processing. In addition, the cut-out part of the steel pipe pile can also be used in the welding of other steel pipe piles, avoiding the waste of resources, and the design elevation of the pile top can be accurately controlled, which is conducive to the progress of construction.

4. The situation of soil squeezing is slight. Most steel pipe piles are open-ended, and the pipe walls of steel pipe piles are thin, which reduces the uplift of topsoil and squeezed soil and reduces the interference of pile pressure on the soil and surrounding facilities. Moreover, steel pipe piles can also be used for intensive construction in small areas.

Therefore, through the classification of steel piles and the characteristics of steel pipe piles explained above, everyone can better understand and use them rationally, thereby improving the quality of construction.