Abstract
In order to study the earth pressure and the deformation behavior of the double-row piles in foundation excavation, a large-scale physical model test was introduced to simulate deformation of double-row piles in foundation excavation based on the principle of similarity theory in this paper. Represented by the deep foundation pit engineering of Changchun, the strain and the displacement of the double-row piles and the earth pressure are calculated by the above-mentioned physical model test. Then a numerical simulation has been carried out to validate practicability of the physical model test. The results show that the strain and the displacement of the front-row piles are larger than the back-row piles. The earth pressure of the front-row piles appears to be “right convex,” correcting the specification of the earth pressure and putting forward the coefficient of β. The results in this paper may provide constructive reference for practical engineering.
Highlights
With the development of urbanization in our country, the high buildings and underground engineering have entered a rapid development stage
As a new type of structure with doublerow piles, it can better solve the stress of the deep foundation pit and solve the influence on surrounding building
References [7,8,9] studied the double-row piles in deep foundation pit by using the numerical simulation
Summary
With the development of urbanization in our country, the high buildings and underground engineering have entered a rapid development stage. As a new type of structure with doublerow piles, it can better solve the stress of the deep foundation pit and solve the influence on surrounding building. Compared to single-row anchored piles, the structure shows better mechanical performance, better holistic nature, smaller construction range, and smaller influence on surrounding buildings. References [7,8,9] studied the double-row piles in deep foundation pit by using the numerical simulation. References [12, 13] researched the stress of the double-row piles by a physical model test and had gotten some beneficial conclusion. Represented by the deep foundation pit engineering of Changchun, this paper mainly researches the stress and displacement of the deep foundation pit by a physical model test. The paper validates the results of the model test by numerical simulation
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