Construction Method and Numerical Analysis on the Bearing Capacity of the Large Diameter and Abyssal Pile Located in Complex Karst Area

Abstract

This paper introduced construction method for deep pile of Zishui bridge through karst region and the checking results of the pile bearing capacity. Firstly, main structure of Zishui bridge was simply introduced. Secondly, according to the special geological conditions, construction methods for bored piles in water and drilling platform were described. The discussion focused on the problem of boring and grouting in karst foundation and their solutions. Finally, to ensure that the pile capacity can meet the design requirements, load transfer method was used on the part of pile foundation to calculate the bearing capacity. Results showed that pile bearing capacity meet the requirements, and the feasibility and correctness of construction method of Zishui bridge was also verified,which provides references for the design and construction of the same civil engineering.

Influencing Factors and Evaluation Criteria of Pile Foundation Settlement in Karst Area

“…With the development of the infrastructure in China, more and more projects are located in the karst area [1][2]. Although there are many researches about the effect of karst cave on the pile bearing characteristics and the cave stability, but many of the existing researches is focus on pile supported on a single cave roof, very few consider the situation of the pile through several caves (i.e.…”

Numerical Study on the Stress of Pile Foundation Influenced by the Beaded Karst

“…Selecting the reasonable pile type and the pile foundation bearing stratum is the key to design under the bridge construction in the karst area [1] [2]. According to the geological conditions and the stress in different ways, the pile can be rock socketed pile or friction pile [3].…”