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Engineering often requires magnetic bearings with sufficient capacity and to reduce the volume as much as possible at the same time. In this paper, the design principles of air gap, magnetic pole, rotor, stator, magnetic pole area and coils are given on the basis of practical engineering experience. Radial magnetic bearing structure with different shaft diameters and different magnetic poles number...
To determine the bearing characteristic value of loading transfer, we investigated the bearing capacities of single pile and single pile with cap. The main results were shown as followed: The axial force attenuated slowly because of the effect of the rigid cap of single pile, The load on pile top was decreased along with the raise of the total load, For the presence of the cap, the distribution of...
With the fast developing of superstructures and skyscrapers, the demands for high bearing capacity of pile foundations have been raised. Based on the axial loading test results of DX piles and post grouting bored piles, this paper mainly studies the bearing capacities of DX piles with the comparison of the post grouting bored piles. Test result shows that the bells of DX piles located on different...
Large-diameter rock-socketed shafts have been widely used in large-scale bridge constructions due to its higher bearing capacity and less settlement. Difficulties in pore-forming and uncertainty of pile bearing capacity have brought challenges to the construction and design of shafts in karst areas. Based on the engineering geological investigation, only parts of caves can be found in boring, however,...
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...
Gear reducer is one of the most widely used methods in mechanical transmission, optimization of which is of great significance in improving the bearing capacity, prolonging service life and reducing its size and quality. By Visual Basic programming mixed with MATLAB, automatic optimization design for gear reducer is realized in the paper, design efficiency and quality greatly improved. Genetic algorithm...
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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