An equal-segment stepped tunnel buffer structure and its design optimization method
A buffer structure and ladder structure technology, applied in design optimization/simulation, tunnel, multi-objective optimization and other directions, can solve the problems of difficult quality control, difficult construction, inconvenient production, etc., to achieve convenient and accurate construction, scientific and rigorous methods, shortening The effect of construction costs
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[0084] like figure 1 and figure 2 As shown in the figure, an equal-stage stepped tunnel 1 buffer structure designed by the present invention is a stepped structure arranged at the entrance of the tunnel 1, and the stepped structure is successively formed by a plurality of semi-annular stepped platforms 2 with the same cross-sectional shape as the tunnel 1. The lengths of a plurality of the step platforms 2 are all equal, and the radii decrease sequentially along the traveling direction of the train in the tunnel 1 .
[0085] A design and optimization method for a buffer structure of an equal-stage stepped tunnel 1, characterized in that it comprises the following steps:
[0086] S1. Determine the order of the stepped buffer structure and the total length of the stepped buffer structure:
[0087] Let the order be n and the total length be l h , then the position coordinate of the connection of the adjacent step platform 2 is x i =-(i / n)l h , the length of each buffer stru...
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