Application of Steel-spring Floating-slab Track to Vibration Reduction of the Metro and Building Integrated Structures

Based on the theory of vehicle-track coupling dynamics and dynamic finite element, and combined with an integrated project case of metro along with public buildings in soft soil, the key influence factors of fundamental frequency optimization of steel-spring floating-slab track are discussed, conducting the analysis regarding the vibration level of time and frequency domain of integrated -structure vibration acceleration aroused by subway, with its general idea is proposed as well. That is to say,the reasonable natural frequency of steel-spring floating track should be determined at first, according to the natural vibration characteristics aiming at different integrated-structure types; and then, in the light of engineering experience and actual, conditions, the design parameter combinations of this track structure with high durability and safety; including the size of floating slab, spring rate and damping as well as arrangement space, can be put forward without changing the optimum natural frequency.