Study Of The Bearing Property Of Squeezed Branch Pile

Squeezed branch pile is a new style of pile which is widely used in recent years. Based on piles with a constant section, this style of piles is with various sections through constructing some expanded branches and plates in the suitable strata of soils. Compared with other ordinary cast-in-situ piles, this style can save raw materials, lower the construction cost effectively, shorten construction time. So, this new style of piles is provided with high social and economic benefit. But there are many insure factors, complexity and difficulties of the squeezed branch pile. What we know about it is narrow, therefore, to assure the safety and economic, it is urgent to further study and bearing property of the squeezed branch pile, in which we can combine the theory with practice. The main works of the thesis are followed:1. Influential the factors of the load transmission characteristics are analyzed theoretically, and the load transmission theoretical formula with squeezed branch pile is inferred.2. Based on the scene experiment result, it is analyzed that the load transfer law with squeezed branch pile about axial force, skin friction, end bearing force and resistance of disk.3. Using the finite element method, the bearing properties of the squeezed branch sing pile are analyzed under different influential factors, and discuss influence of developing the plate spacing to skin friction and end bearing force.4. Squeezed branch pile bearing capacity is estimated through using the ball broaching theory, and carries on the confirmation to the actual project. According to the collection of the test pile materials, it is shown that squeezed branch piles have high bearing capacity, good subsidence than straight piles by computation and comparison.