Comparative Study on Chinese and Foreign Earth Pressure Calculation Methods for Pipe-Sheet Composite Wharf Structure

Abstract

Pipe-sheet combination structure is a novel form of wharf structure, which utilizes steel pipe piles with better performance as the main stress components to withstand lateral pressures such as water pressure and earth pressure, and low-cost steel sheet piles as the linking structure to form a pipe-sheet combination wall, which to a certain extent can take into account both the performance and the cost issues, but whether the pipe-sheet combination structure can be adapted to the design and use of the large-scale berths of the wharf under the deep-water environment has always been a controversial issue in the engineering field. However, it has been controversial in the engineering community. Therefore, it is necessary to analyze and research more deeply the actual force situation of the pipe-sheet combination structure and the applicable calculation method. In this paper, based on the field measurement data, the active earth pressure calculation of the back side of the pipe-sheet composite pile is compared and analyzed, and the results show that the earth pressure calculation formulas used in China and the United States for the sheet pile structure are much closer to the actual results compared to the calculation method of the Japanese specification in the calculation of the earth pressure of the back side of the pipe-sheet composite structure; the numerical simulation can be used to set up the pipe-sheet composite pile structure into an equivalent cross-section of the sheet pile module, which can effectively avoid the data of the sheet pile module, and can also be used in the numerical simulation. When numerical simulation is used, the pipe-sheet composite structure can be set up as a plate pile module with equivalent cross-section, which can effectively avoid the problems of aberration and stress concentration in the data calculation, and the calculation results can better respond to the actual stress situation in the field.