Linkage type row pile vibration isolation structure

Abstract

The invention relates to a linkage type row pile isolation structure. The structure is provided with a periodic row pile structure on the walking direction of row piles, and pile tops of the row piles are in mutually rigid linkage through linkage beams. Each pile in the same row of the piles is a concrete pile with arbitrary cross section, and is provided with same geometry material parameters; and piles in different rows can have different parameters. The linkage beams in the same groups have same geometry material parameters, and the linkage beams in different groups can have different parameters. Floquet transformation and a boundary element method are adopted, and a pile-soil boundary element model in a wave number domain is built. The linkage beams on the upper portion are processed through a transfer matrix method. The pile-soil boundary element model, coupling conditions and periodic conditions of the pile tops and the beams are adopted, and a calculation model of the linkage type row piles is built. Compared with free type row piles with pile tops not restricted, the linkage type row pile isolation structure can effectively reduce vibration isolation coefficients and improve vibration isolation effects.

Description

technical field [0001] The invention proposes a new type of pile foundation structure for vibration isolation, that is, connected row piles, and uses Floquet transformation and boundary element method to establish a periodic boundary element model of the new type of pile foundation vibration isolation structure. Background technique [0002] In the 21st century, China's modern transportation facilities such as high-speed railways, expressways, subways and light rails are rapidly popularizing. Correspondingly, the vibration problems caused by the above-mentioned transportation facilities have also attracted extensive attention in the engineering field; at the same time, due to machine vibration The vibration problems caused by construction activities such as construction, blasting and piling are also becoming more and more serious, which brings a lot of inconvenience to people's daily life. Therefore, improving the vibration isolation effect of various vibration isolation fac...

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Problems solved by technology

In addition, in the existing studies, due to the limitation of the computer capacity, the piles are all simplified to a limited number of piles. Obviously, this is different from the pile-row vibration isolation system that contains dozens or even hundreds of piles in engineering practice. meets the

Since the number of piles used in the vibration isolation numerical simulation has a significant impact on the vibration isolation effect, there are limitations in using a few piles to simulate the pile-row vibration isolation system

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