A Study on Its Design Theory and Engineering Applications of a Prestressed Cable Anchor Pile Sheet Wall Structure for Embankment (Shoulder) Slope Protection
In the light of vertical static load test in situ of tension pile in permanently frozen ground at Qingshuihe of Qing-Zang Railway,the paper makes thorough study of freezing strength of frozen soil around pile and limit bearing capacity for vertical tension of foundation pile,analyzes and compares the results of load test for foundations of direct hole pile and pedestal pile,which have provided scientific basic for pile foundation of Qingzang Railway.
According to the principle of linear pile-up of small displacement, the static and dynamic output kinematic errors are synthesized, and the reliability model of the kinematic accuracy of the mechanism is built.
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Notably, either genetic distance between subpopulations from the layers of 5-10 cm and 25-30 cm of each tailing pile or between same layers of different tailing pile increased with the history of tailings.
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Shaking table testing of hard layered soil-pile-structure interaction system
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Shaking table tests on a dynamic interaction system of hard layered soil, pile foundation and frame structure were carried out.
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New model of load transfer function for pile analysis based on disturbed state model
In recent years, Prestressed Concrete long piles are universally adopted. Last year such kind of pile with length up to 27~M have been produced in this country. Now in order to meet the requirements of Shanghai Harlour works and Yangtze River Bridges, we work out a new type of prestressed concrete hollow pile of 36~M long, with a cross-section, of 55 cm square (inner diameter 40 cm.) By using temporary prestressing fittings on pick points with automatic adjustment for prestress, the pi...
Two current methods used in China for the computation of embedded pile are briefly analysed in this paper. There are a variety of opinions on the use of "Foundation Reaction Coefficient Method" based on elastic theory for solving the resisting force of piles in sliding mass directly,and meanwhile, an elastoplastic composite solution with boundary condition of ultimate equilibrium state of stress in the soil mass overlying the sliding plane,i.e.the"Equivalent Foundation Coefficient Method" is pro...
The behavior of elastic pile is considered to be closely similar to the behavior of beam on an elastic foundation.The lateral load test of a pile indicates that the measured deflections in several-instances have shown best agreement with the calculated results when the foundation modulus ky varies with depth y,e.g.K_y=k_ay~a. The general solution for piles subjected to lateral trapezoidal load has been derived in this paper by Solving the elastic curve equations.