An energy-dissipating pile for a subway structure

Abstract

The invention discloses an energy-dissipating pile for a subway structure, which belongs to the field of subway equipment. It includes a top end, a pile body and a bottom end, the pile body is columnar, its top is fixedly connected to the bottom of the top end, and the bottom of the pile body is fixedly connected to the top of the bottom end; the top end and the bottom end The maximum cross-sectional area of ​​the pile body is larger than that of the pile; the top end and the bottom end are all made of concrete with high damping ratio elastic materials, and the addition amount is 3% to 10%; the pile body is made of concrete with high damping ratio Concrete of elastic material, the addition amount is 2%~5%; the present invention adds high damping ratio elastic material to the energy-dissipating pile, so that the effect of vibration reduction and energy consumption of the energy-dissipating pile has been greatly improved, and the end and pile The matching of the material damping ratio suitable for the body, combined with the enlarged pile structure at the end, can effectively reduce the influence of the whiplash effect and suppress the vibration amplification phenomenon at the bottom of the pile within a short design length.

Description

technical field [0001] The invention belongs to the field of subway equipment, and more particularly, relates to an energy-consuming pile for subway structures. Background technique [0002] With the massive construction of subways, more and more subway lines are approaching or even passing through buildings that require vibration control. In this regard, the industry mainly conducts three aspects: vibration reduction at the vibration source, vibration isolation through vibration propagation paths, and vibration isolation of the vibration receiver. Vibration control, in which the vibration isolation of the vibration propagation path mainly adopts the barrier vibration isolation, which is used to hinder or change the transmission of the vibration wave to the protected area, thereby reducing the ground and structural vibration of the protected area. [0003] At present, many scholars have found that the vibration reduction of piles is a better vibration isolation method. Howe...

AI Technical Summary

Problems solved by technology

However, there is a whiplash effect at the end of the traditional equal-section pile, and the length of the pile body has to be increased to reduce the impact of vibration amplification at the pile end. This treatment method will increase the construction cost and difficulty of construction; in addition, the existing pile The body structure is difficult to isolate the propagation of surface Rayleigh waves, and the vibration reduction effect is very limited

Images