Application method of sparse pile foundation in water conservancy engineering

Abstract

The present invention provides an application method of sparse pile foundation in water conservancy engineering, which includes the following steps: S1, selecting a suitable diameter of the pile body to ensure that the bearing capacity of a single pile is controlled within a preset range; S2, determining the number of sparse piles, which needs to be compared with each other. The distance between the pile centers of two adjacent sparse piles is S a , and S a >6d, where d is the diameter of the pile body; S3, the sparse pile and the hydraulic foundation form the sparse pile foundation. The water conservancy project of the invention adopts the sparse pile foundation, which changes the properties of the soft soil foundation, realizes that the bearing capacity and settlement requirements are met, and the foundation is prevented from generating seepage channels, thereby ensuring the safety of the water conservancy project; the number of piles for the sparse pile foundation is only 1 / 3~1 / 2 of the ordinary pile foundation, the cost of the pile foundation is significantly reduced, and the benefits are obvious; the prefabricated piles are used for the dredging piles, which is easy to control the quality, saves the investment, fast in construction, and convenient in construction.

Description

technical field [0001] The invention relates to hydraulic foundations, in particular to an application method of sparse pile foundations in hydraulic engineering. Background technique [0002] The main problems of water conservancy projects on soft soil foundations are insufficient bearing capacity and excessive foundation deformation. Soft soil foundations generally need to be treated to meet the design requirements. In addition to bearing capacity and deformation, the foundation of water conservancy projects must also satisfy seepage stability. At present, in the soft soil areas such as the Yangtze River Delta and the Pearl River Delta, the foundations of water conservancy projects such as pumping stations and sluices are usually based on ordinary pile foundations. Due to the inconsistent settlement of the pile foundation and the soil between the piles, it is often easy to get between the bottom plate and the foundation soil. A seepage channel is formed, which poses a gre...

AI Technical Summary

Problems solved by technology

Third, considering the bearing capacity or settlement, there is no need for so many piles, and the bearing capacity of the soil between the piles is not utilized, resulting in unnecessary waste

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