River piling fir wood pilesThe solution to hydraulic engineering underwater cast-in-place piles is to directly drill holes on the pile site, and then place steel cages in the holes to pour concrete. Cast-in-place piles can adapt to various strata, and there is no need to connect piles. There is no vibration during construction. No soil squeezing, low noise, suitable for use in densely built suburbs. However, its operation requirements are strict, and a long curing period is required after construction to withstand the load. A large amount of soil or mud will be discharged when the hole is formed. Follow the hole forming process. Similarly, they are divided into cast-in-place piles with holes formed by dry work, cast-in-place piles with holes formed by mud wall protection, cast-in-place piles formed with holes by casing, and cast-in-place piles formed by blasting holes. The construction technology of cast-in-place piles has developed rapidly in recent years, and there are also New technologies such as ramming and expanding sunken tube cast-in-place piles, drilling and grouting piles.

River piling fir wood pilesThe solution is to clean the site → measure and set out the pile position → place the pile driver → drill and take soil to form the hole → remove the sediment at the bottom of the hole → inspect and accept the quality of the hole → hoist the steel cage → pour concrete in the hole.

River piling fir wood pilesThe solution is to comply with laws and regulations. The liquid level must be 0.5 m or more above the groundwater level. If conditions permit, it is better to be 2 m or more above the groundwater level. If the mud colloid rate of the protective wall is low and the sand rate is high, not only will the performance of the protective wall be poor, but also Because of its large bulk density, the problem of excessive sedimentation speed is bound to occur. Generally speaking, (2) the mud used for wall protection should meet the requirements for wall protection. When forming holes in clay or sub-clay soil, the relative density of the mud should be controlled between 1.3 and 1.3- 1.5. During the construction process, a reasonable mud level should also be maintained in the hole.