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Spud punch-though continues to be a major cause of foundation failure of offshore jack-up self-elevating drilling platform.The resulting damage range from minor structural damage of its leg and jacking mechanism to complete loss of the platform.Most punch-though failures happen during the jacking up and preloading in layered soils profiles with a relatively thin larer of sand or stiff caly overlying...
An attempt is made in this study to research the performance of prestressed concrete pipe piles based on 10,333 pile tests. Short and medium-length piles with slenderness ratios ranging from 10 to 90 are most widely used, and the optimal length is between the range of 10~50 m. For the same bearing stratum and diameter, the capacity of pile increases with increasing pile length until a limiting value...
There is high requirement to the foundation of the raceway of container gantry crane. However, the marine soft soil is distributed extensively at ports. How to predict and control its settlement is a key to assure the design safety of container gantry crane. In the paper, the settlement and bearing capacity of natural and composite foundation of raceway of container gantry crane under design load...
This investigation uses particle swam optimization (PSO) approach to calculate the reliability index. PSO can search the extreme point of the complex objective function more effectively in contrast to tradition optimization algorithm. According to PC pipe piles static test data in Wuhan, both statistics analysis and reliability analysis of the bearing capacity of single PC pipe pile are made by using...
With the advantages of high bearing capacity and efficient construction, the driven open-end steel pipe piles have been widely used for pile foundations in bridge engineering. However, there is no stated computational method for its vertical bearing capacity in the current code for pile foundation design of highway bridges. Based on analyzing the bearing mechanism and the static load test results...
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