株式会社プランテック総合計画事務所 代表取締役所長 来海　忠男

　１日約２５万人の乗降客が往来する南海ターミナルビルの核テナントである髙島屋大阪店にとって、東側に位置する五つの既存事務棟の新館（TE館）への建替えは永年の夢であった。７年前に提案の機会を頂き、これまでの「本館」「西館」「東館」に「TE館」を増床するだけでは、髙島屋大阪店の発展にはつながらないと考え、各館の定義を再構築し既存館・TE館も含めた「髙島屋大阪店新本館」を提案した。さらには近い将来予想されるキタ、阿倍野とのエリア間競争を迎え撃つ為には「南海ターミナルビル」という大阪・なんばの財産の再生及び南海ブランドの向上こそが唯一の方法と考え、「南海ターミナルビルの再生計画」を提案、推進した。昭和７年に竣工した南海ビルを再生する為には既存遡及等多くのハードルがあったが、法律と真正面から向き合う事で遡及工事を１／３程度とする事で実現する事が出来た。最近ではターミナルビル周辺も様変わりし、なんばの街の再生発展の希望が見えて来ている。

　人口の減少や少子高齢化が進行するなかで、鉄道事業は極めて厳しい経営環境に直面しており、不動産・流通事業についても、限られた顧客を奪い合う地域間競争が激化しています。一方、高齢化・低炭素社会に適した公共交通機関として鉄道・バスが見直されてきており、これら社会環境の変化に適応した新たな「まちづくり」を鋭意進めています。特に、弊社は関西国際空港に一番近いターミナルである「なんば」を拠点にしており、「観光・インバウンド」分野でのリーディングカンパニーとして、新たなビジネス・輸送需要の創出に挑戦しています。今般リニューアルした「南海ターミナルビル」を核として、地元・企業と連携し「なんば」エリアの再生に引き続き取り組みたいと思っています。

　百貨店を取り巻く環境は厳しく、少子高齢化や消費構造の変化に伴い百貨店売上高は、減少し続けています。当社は昨年創業180周年を迎え、「新たな成長への挑戦」を目標に、国内の大型店舗と、成長著しいアジア市場に重点的に投資をしていく計画です。その第一弾が、『大阪店新本館計画』です。お客様に『新たな価値』と魅力を提案するため、創業からの基本姿勢である「お客様第一主義」に立ち返り、お客様の声に耳を傾けた結果が、なんばの街の魅力化への貢献であり、時代の変化を捉えたお買い物の利便性とエンターテインメント性をもった新しい髙島屋の創出でした。これからも、地域とのコミュニケーションを大切に、お客様に最も愛される百貨店であり続けるために、日々進化させていきたいと考えています。

業務区分 :総合監修・全体許認可担当・設計・監理   （一部実施設計：株式会社竹中工務店   株式会社大林組） 所在地 :大阪府大阪市中央区難波 規模 :地上36階、地下3階、塔屋2階 プロジェクト期間 :2003年12月 ～ 2011年3月 敷地面積 :34,252㎡ 建築面積 :33,508㎡ 延床面積 :269,299㎡

　なんばの中心に位置する南海ターミナルビルは昭和 7 年に建設された南海ビル(髙島屋等)を筆頭に南海会館ビル、なんば CITY、南海なんば駅、スイスホテル南海大阪から構成される日本有数の巨大複合施設です。
　計画当初のターミナルビルは、長年にわたり増改築が繰り返された結果として各々の施設が互いに独立してしまい、駅直結の複合施設としてのポテンシャルを有効に活用することができない施設構造となっていました。
　髙島屋大阪店の増床計画の業務依頼をきっかけとして、南海ターミナルビル全体の大規模リニューアルへと発展したこのプロジェクトは、「伝統と格式の再生」「ターミナルビルの中心軸の構築」「新旧の融合」というコンセプトをもとに課題の抜本的解決を第一義とするバリューアップをめざしました。

　計画当初に行われた『なんば(ミナミ)』のイメージ調査によると「わかりにくい」「行きたい店がない」など街の機能充実度がキタと比べて低く、「きたない」「怖い」などの街の治安・環境に対し不安を感じている等、街とターミナルビルに対してネガティブな印象がそのままなんばの街の低迷につながっていました。 このプロジェクトは、かつての活気溢れる「なんば」の街を取り戻すべく、その中心に位置する南海ターミナルビルを人々が日常的に使えるアクティブな施設として「再生」させることを目的としました。

　そのためには渡り廊下などの線でつなぐ「別棟増築」ではなく、建物間を「面」でつないで一体化する『一体接続』が必要であると考えました。
　現在の建築基準法では、一体接続の為には１００％の既存遡及が必要となります。本計画では日本で初めて既存不適格建築物に大臣が認定する事で通常の遡及の１／３以下のコストで１００％の安全性の確保を実現し、バラバラに開発された施設を1つのコンプレックスへと集約し、相互施設の連携強化、集客力強化、安全の確保を実現する事が可能となりました。

PLANTEC ARCHITECTS INC. President Tadao Kimachi

Takashimaya Department Store, Osaka, is the main tenant of the Nankai Terminal Building, through which some 250,000 commuters pass every day, and the replacement of five office buildings on the Terminal Building's east side with the new "TE Building" is a development that has long been on its wishlist.
Plantec was invited to submit a proposal seven years ago. We originally considered simply connecting the TE Building to the existing Main, West and East buildings as a way of adding sales area, but this approach would not contribute to the further development of the Takashimaya Osaka store, so we proposed the "Takashimaya Osaka Store New Main Building" that integrates the existing buildings – restructuring how each is defined – and the TE building.
We proposed and promoted the "Nankai Terminal Building Renewal Project" to give new life to the Nankai Terminal Building, which is a renowned feature of Osaka's Namba district, as we believed this would both benefit the Nankai brand, and would be the only way to compete against expected competition in the near future with the Kita (Umeda) and Abeno areas. The original Nankai Building was built in 1932, so we encountered many hurdles; but we achieved our objectives by managing to streamline the retroactive construction work to about a third while still fulfilling all legal requirements. There has been a recent uplift in the atmosphere around the terminal building – a promising sign for the revitalization of Namba.

Nankai Electric Railway Co.,Ltd. President Shinji Watari

Management in the railway business is faced with the difficult situation of a declining population due to the low birthrate and ageing populace, and competition among local real estate and logistics businesses has become more intense as they try to attract more of their ever-diminishing customer base.
On the other hand, public transport like railway and bus has been reevaluated as best suited to reducing carbon dioxide (CO2) emissions and serving the needs of an aging society, and we have dedicated ourselves to new town development that accommodates these social and environmental changes.
Our company is based in Namba, home to the terminal nearest Kansai International Airport, and we try to generate new transport-related business and demand as a leading domestic and inbound tourism company.
We are engaged in an ongoing effort to revitalize the Namba area in cooperation with both the local community and companies based around the recently revamped Nankai Terminal Building.

Takashimaya Company,Limited President Koji Suzuki

The business environment for department stores has been very tough lately, and sales have gradually been declining in line with changes in consumption and demographics due to the declining birthrate and aging populace.
We celebrate our 180th anniversary last year, and plan to focus our investment on domestic megastores and on the Asian market, which has experienced significant growth, in the spirit of "taking on the challenge of new growth."
The first step in this direction is the "Takashimaya Osaka Store New Main Building Project."
To offer new value and attract customers, we sought out customer opinion in order to reconsolidate the customer-oriented philosophy that has been our basic stance since we first opened our doors. As a result, the new Takashimaya store is more upbeat and shopper-friendly, and thus better in tune with changes in the times, and enhancing the overall attractiveness of Namba.
We hope to improve our store day by day to become an ongoing customer favorite while communicating closely with the local community.

Scope of works :General supervision, handling overall   permissions and approvals, design   construction supervisor   (Sectional design: Takenaka   Corporation 　Obayashi   Corporation) Location :Namba,Chuo-ku,Osaka Cty, Osaka Size :36 stories above ground   three underground levels   two penthouse levels Project period :December 2003 - March 2011 Site area :34,252㎡ Building area :33,508㎡ Total floor area :269,299㎡

Nankai Terminal Building in the heart of Namba was constructed in 1932. It is one of the largest complexes in Japan, being comprised of the Nankai Building (prime occupant, Takashimaya), the Nankai Kaikan Building, Namba CITY, Nankai Namba Station, and Swissôtel Nankai Osaka.
The structure of the original terminal building has never been able to effectively reach its potential as a complex directly connected to the station, as each constituent facility was independent, resulting in repeated refurbishment and expansion over many years.
Upon receiving an order to expand the floor space of Takashimaya's Osaka store, we grasped this opportunity to develop the project into a large scale renewal involving the entire Nankai Terminal Building. Our three guiding and interlinked concepts were "Renaissance of tradition and prestige," "Establishment of a central axis for the terminal building," and "Integration of old and new," with the aim of increasing the site's overall value while giving top priority to finding fundamental solutions to outstanding issues.

According to a survey into the image of Namba (Minami) conducted at the beginning of the project, the functionality level of the town is deemed lower than Kita, attracting comments like "Complicated" and "There are not many shops I wish to visit." Negative connotations about the town and the terminal building, such as "dirty" and "scary," seem directly related to its stagnation.
This project was conducted in order to revitalize Namba by renewing the Nankai Terminal Building at its center into an active facility for the use of many people every day.

In order to achieve this, the buildings needed to be integrated through planar connections (integration connections) rather than linear connections, for example, via a gateway bridge (addition of annex).
Under current Japanese Building Standards Law, 100% retroactive application of building standards is required for integration connections.
However, for this project, the minister approved the existing architectural structure for the first time in Japan, so complete safety was ensured at a third of the cost of a typical retrofitting, individually developed facilities were consolidated into one complex while ensuring safety, attractiveness for customers was enhanced, and collaboration between facilities reinforced.