Segmented flexible isolation bag, device and method

Abstract

The invention relates to a segmented flexible isolation bag, device and method. The segmented flexible isolation bag comprises an inner membrane which encloses an empty cavity; the outside of the inner membrane is covered with an outer protective layer; the empty cavity is filled with an isolation medium and includes an upper empty cavity, a middle empty cavity and a lower empty cavity arranged from top to bottom and isolated from one another; the upper empty cavity is as large as the lower empty cavity in volume; the middle empty cavity is greater than the upper empty cavity in volume; the pressure upon the isolation medium in the middle empty cavity is less than that of the isolation medium in the lower empty cavity. Empty ditches can be filled with the segmented flexible isolation bag instead of gravels; collapse of the empty ditches is avoided, and it can be avoided that vibration is transferred to a protective zone from the isolation bag.

Description

technical field [0001] The invention belongs to the technical field of dynamic tamping foundation reinforcement, and in particular relates to a segmented flexible vibration isolation bag, a vibration isolation device and a method. Background technique [0002] Dynamic compaction is a commonly used engineering technique in foundation reinforcement engineering. This technique generally involves hoisting a heavy hammer with a weight of 10 to 60 tons for 8-20 meters, allowing the heavy hammer to fall freely, and relying on the dynamic impact of the heavy hammer to reinforce the foundation. During this reinforcement process, the surface waves and shear waves generated by dynamic compaction will cause adverse vibration effects on the surrounding environment, and even cause damage to surrounding structures, underground facilities, and related equipment and instruments in severe cases, affecting the safety of the structure, which seriously restricts The engineering application of d...

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Problems solved by technology

[0004] 1) In the prior art, an empty ditch with a sufficient depth is generally used as a vibration isolation barrier to obtain an ideal vibration isolation effect. However, since the stability of the wall of an empty ditch with a large depth is difficult to guarantee, in actual engineering, only shallow Due to the shallow depth, the vibration isolation effect is generally poor;

[0005] 2) In order to maintain the stability of the vibration isolation ditch, gravel and other materials are often filled in the ditch during engineering, which further reduces the vibration isolation effect; the vibration isolation efficiency of traditional pile holes, pile rows and other discontinuous barriers is low, and it is generally difficult to achieve the desired effect;

[0006] 3) In the construction process of some projects, flexible vibration isolation devices (such as air bags and water bags) are added to the vibration isolation ditch, but the vibration isolation materials in the prior art are not set according to the different forces at different heights of the vibration isolation ditch, Caused a waste of external protection materials and vibration isolation materials

[0007] 4) In the construction process of some projects, flexible vibration isolation devices (such as air bags and water bags) are added to the vibration isolation ditch, but there is no guidance and installation equipment for the use of flexible vibration isolation materials, resulting in the installation and use of flexible vibration isolation devices. the inconvenience

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