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Contributing to vibration, liquefaction, and differential settlement measures! WIB method [Helpful materials provided]

Can be used for residential areas, facilities, and roads! Enhances the bearing capacity of soft ground and prevents building settlement and liquefaction.

The "WIB method" is a ground vibration mitigation technique that constructs a rigid plate-like or wall-like cellular structure (WIB structure) at the required depth underground using ground improvement piles. This method reduces environmental vibrations from road traffic, railways, construction work, factories, events, and seismic forces on structures during earthquakes. It consists of a replacement soil (isolation layer) that suppresses and blocks the propagation of ground vibration waves, and a cellular structure (damping layer) that absorbs and blocks vibrations. The sum of the isolation and damping effects achieves the vibration reduction target. Additionally, it simultaneously exhibits the effects of "vibration mitigation" (improving vibration environments and reducing seismic motion), "liquefaction countermeasures," and "uneven settlement countermeasures," thereby keeping the overall ground improvement costs low. 【Features】 - Usable for residential buildings, facilities, and roads - Reduces seismic forces on structures during earthquakes - Enhances the bearing capacity of soft ground, preventing building settlement and liquefaction - Keeps overall ground improvement costs low *For more details, please refer to the PDF document or feel free to contact us.*

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[WIB Construction Method Case Study] Vibration Control Measures for Medical Facilities

Filling tire shred with high damping material between the underground vibration barrier and the improved column row! A case where the work environment has been improved.

At SEIHA in Chiba Prefecture, vibrations from trains passing near medical facilities were interfering with operations involving precision equipment in medical rooms. In response, a 'WIB method' was implemented between the railway and the medical facility. A composite WIB design was created by utilizing existing underground vibration isolation walls, combining wall-like and slab-like structures. Based on the micro-vibration tolerance curve for precision equipment, target vibration reduction amounts and target reduction frequency bands were established. After the measures were implemented, vibrations in the target reduction frequency band were reduced to less than half, improving the operational environment. 【Case Summary】 ■ Location: Chiba Prefecture ■ Client: SEIHA Co., Ltd. ■ Vibration Source: Railway vibrations ■ Preservation Target: Precision equipment in medical facilities ■ Countermeasure Work: Wall-like WIB + Slab-like WIB ■ Construction Position: Vibration propagation path *For more details, please refer to the PDF document or feel free to contact us.

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