SUSTAINABLE URBAN REGENERATION THROUGH “BOUNDARYLESS” UNDERGROUND DEVELOPMENT: INTEGRATION OF UNDERGROUND AND ABOVEGROUND, PUBLIC-PRIVATE PARTNERSHIP, AND CONTINUITY FROM PLANNING TO OPERATION – A CASE STUDY OF SHIBUYA, TOKYO

АУТОР(И) / AUTHOR(S): Taro Fukuda, Kento Yoshino

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DOI:  10.46793/ACUUS2025.6.5.95

САЖЕТАК / ABSTRACT:

Tokyo has developed a rail-centered transport system above and below ground to support its vast population. Rapid development around railway stations in the late 20th century created complex urban structures and aging infrastructure. Today, Tokyo seeks regeneration strategies, with underground development key to improving livability and connectivity. As a solution to these problems, this study introduces strategies taken around Shibuya Station—one of Japan’s largest terminal stations—to discuss the benefits and challenges of “boundaryless” underground development led by NIKKEN SEKKEI. The strategies are integration of underground and aboveground, public-private partnerships, and continuity from planning to operation. The featured projects are as follows.

1. Planning and operation of vertical public plazas called „the Urban Core” by private entities located in private land. Following the concept of regional design developed under public-private partnership, these facilities ensure smooth pedestrian connections between underground and aboveground and designed to be the city’s new iconic landmark.
2. Planning and operation of underground public plaza by private entities located in public land. Revenue from contents such as cafes and advertisements within the plaza is reinvested into its maintenance and management, achieving both sustainable operation and area revitalization unique to underground spaces.
3. Planning and operation of underground parking network that transcends multiple property boundaries of both public and private lands. This allows us to establish an integrated parking service in the area and ensure smooth aboveground traffic.

“Boundaryless”underground development strategies play a key role in connecting people and driving urban regeneration in complex cities like Shibuya. However, since underground development is time and money consuming, creating a system such as BID will be effective to manage financial burden not only subjected to developers but shared among the entire area that benefits from it.

КЉУЧНЕ РЕЧИ / KEYWORDS:

Transit-Oriented Development (TOD), Boundaryless, Pedestrian Network, Parking Network, Shibuya Station Redevelopment

ПРОЈЕКАТ / ACKNOWLEDGEMENT:

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