Work

Underground Extensions of Existing Buildings in Japan :

Year: 2025

Type: article

Abstract: This paper examines the trend of underground extensions of existing buildings in Japan using case studies from Shinkenchiku magazine (1983-2019). It proposes a conceptual framework for integrating new underground spaces with both old and modern structures, emphasizing engineering advances and disaster prevention. The ﬁndings reveal a shift towards less conservative designs that enhance visual presence and urban connectivity. The framework categorizes diverse approaches for analyzing spatial continuity and visual impact, identifying hybrid strategies for complex sites. This research offers a ﬂexible guide for architects, planners, and policymakers, highlighting the signiﬁcance of underground extensions in contemporary design.

Source: Journal of Architecture and Planning (Transactions of AIJ)

DOI: 10.3130/aija.90.679

Authors: Waddah DRIDI, Takahiro TAJI

Institution: Kyoto University

Language: English

Topic: Underground infrastructure and sustainability

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

SDGs: Sustainable cities and communities, Industry, innovation and infrastructure

Open Access status: bronze

OpenAlex ID: W4409012562

FWCI:

Cites: 11

Cited by:

Related to: 10