建筑設(shè)計(jì)：四川省建筑設(shè)計(jì)研究院有限公司，山鼎設(shè)計(jì)

項(xiàng)目信息/Credits and Data

地點(diǎn)/Location:中國(guó)四川成都市錦江區(qū)/Jinjiang District,Chengdu,Sichuan,China

客戶/Client:四川新華發(fā)行集團(tuán)有限公司，新華文軒出版?zhèn)髅焦煞萦邢薰?Sichuan Xinhua Publishing Group Co.,Ltd.,Xinhua Wenxuan Publishing Media Co.,Ltd.

主持建筑師/Principal Architect:李欣愷/LI Xinkai

設(shè)計(jì)團(tuán)隊(duì)/Design Team:王昆，張碚貝，彭濤，鐘于濤，胡斌，鄒秋生，肖波，黎波，甘靈麗，章耘，程媛/WANG Kun,ZHANG Beibei,PENG Tao,ZHONG Yutao,HU Bin,ZOU Qiusheng,XIAO Bo,LI Bo,GAN Lingli,ZHANG Yun,CHENG Yuan

結(jié)構(gòu)設(shè)計(jì)/Structural Design:四川省建筑設(shè)計(jì)研究院有限公司/Sichuan Architectural Design and Research Institute Co.,Ltd.

結(jié)構(gòu)工程師/Structural Engineers:唐錦蜀，蔡仁輝，張堃，陳剛/TANG Jinshu,CAI Renhui,ZHANG Kun,CHEN Gang

施工圖設(shè)計(jì)/Architects of Record:四川省建筑設(shè)計(jì)研究院有限公司/Sichuan Architectural Design and Research Institute Co.,Ltd.

承建/General Contractor:中國(guó)五冶集團(tuán)有限公司/China Metallurgical Group Co.,Ltd.

結(jié)構(gòu)體系/Structural System:型鋼混凝土柱-型鋼梁-鋼筋

混凝土核心筒混合結(jié)構(gòu)體系/Hybrid structure system

場(chǎng)地面積/Site Area:17,182.96 m2

基底面積/Built Area:6742.36 m2

建筑面積/Floor Area:226,714.5 m2

建筑高度/Height:172.2 m

層數(shù)/Storey:地上42層，地下4層/42 storeys aboveground,4 storeys underground

設(shè)計(jì)時(shí)間/Design Period:2011-2013

竣工時(shí)間/Completion Time:2017

繪圖/Drawings:張碚貝，程媛/ZHANG Beibei,CHENG Yuan

攝影/Photos:呂銳/LYU Rui

新華之星科研生產(chǎn)基地位于成都市城南三環(huán)路外側(cè)錦江工業(yè)園核心區(qū)，北臨三環(huán)路，西面錦江?？偨ㄖ娣e約226,000m2，由兩棟約170m 塔樓、4層裙樓及地下室組成。項(xiàng)目定位為新華發(fā)行集團(tuán)/文軒出版?zhèn)髅降钠髽I(yè)總部和西部最大的文化產(chǎn)業(yè)基地。

項(xiàng)目用地位置優(yōu)越，但建設(shè)條件卻頗有挑戰(zhàn)。首先，用地緊張，擬選址基地面積不足20,000m2，且為一東西向狹長(zhǎng)地塊；其次，作為新華發(fā)行集團(tuán)/文軒出版?zhèn)髅降钠髽I(yè)里程碑項(xiàng)目，項(xiàng)目的定位高、規(guī)模大且功能復(fù)雜，建筑包含了企業(yè)總部、文化產(chǎn)業(yè)基地、辦公配套用房、配套商業(yè)等多種功能，總建筑面積逾220,000m2；第三，項(xiàng)目毗鄰紅星路南延線城市中軸，直面成都的母親河錦江，屬于城市功能和視覺的聚焦地。

面對(duì)一系列的挑戰(zhàn)，設(shè)計(jì)采用了創(chuàng)新性的設(shè)計(jì)手法：

（1）通過傳統(tǒng)文化符號(hào)的現(xiàn)代應(yīng)用塑造一個(gè)在視覺焦點(diǎn)上的企業(yè)地標(biāo)

設(shè)計(jì)采用具有突破性的建筑造型手法，近180m 的建筑通過逐漸收分，使得龐大的體型呈現(xiàn)出極為優(yōu)雅的線條，形成寓意“書山”的建筑造型，建筑態(tài)勢(shì)挺拔升騰，象征著天府之國(guó)的“文化高地”。

同時(shí)，提取傳統(tǒng)文化中的“竹簡(jiǎn)”“活字”兩個(gè)與書籍出版最為密切相關(guān)的文化符號(hào)進(jìn)行抽象并與現(xiàn)代建材有機(jī)關(guān)聯(lián)，通過設(shè)計(jì)手法進(jìn)行重新構(gòu)成，以平板、折板幕墻的組合形式最終呈現(xiàn)，在立面上形成富有韻律的書簡(jiǎn)開合，營(yíng)造出獨(dú)具特色的建筑造型。

（2）力求有限用地下的城市與建筑的完美契合

針對(duì)項(xiàng)目容積率偏高而地塊狹長(zhǎng)的特點(diǎn)，選用獨(dú)特的心型平面形式，向毗鄰錦江的城市主干道打開空間，有效消減了兩棟塔樓對(duì)城市的空間壓迫感和相互干擾，同時(shí)減少了直接西曬，創(chuàng)造了更多直面錦江的和南北向采光的室內(nèi)空間，營(yíng)造出良好的使用感受。

同時(shí)，為了解決超高容積率下的布局問題，設(shè)計(jì)采用了“超高層雙塔+裙樓”的組合形式盡量整合建筑體，在主要城市道路交口確保對(duì)城市空間的有效退讓。同時(shí)雙塔間為后續(xù)開發(fā)用地留出足夠的視線通廊連通錦江，在確保功能的同時(shí)兼顧城市的空間感受。

（3）打造高效、綠色的現(xiàn)代辦公空間

三角形的平面和挺拔收分的形體，解決了嚴(yán)苛條件下的建設(shè)和企業(yè)形象的需求，但同樣帶來了不規(guī)則的室內(nèi)空間。為了應(yīng)對(duì)這一問題，設(shè)計(jì)創(chuàng)造性地采用了梯形核心筒以呼應(yīng)三角形平面，同時(shí)針對(duì)建筑形體的收分，采用相同斜率的結(jié)構(gòu)柱，確保了室內(nèi)空間的完整性。同時(shí)，在超高的容積率下，為了給員工創(chuàng)造舒適場(chǎng)所，塔樓隔層設(shè)置了挑高空中綠化空間，通過公共空間的立體貫通，在建筑內(nèi)部形成可呼吸的綠肺，既能使員工充分接觸自然，也能有效調(diào)節(jié)環(huán)境，同時(shí)兩棟塔樓間以屋頂花園聯(lián)系，形成綠色自然的辦公環(huán)境，緩解用地緊張帶來的景觀不足問題。

（4）保證立意實(shí)現(xiàn)的建構(gòu)細(xì)節(jié)控制

本項(xiàng)目表皮設(shè)計(jì)經(jīng)過精心思考，為了確保幕墻精細(xì)度，通過外挑樓層板迎合體形的流線形收分，以呼應(yīng)書架意境造型，既迎合了“書山”的立意，又降低幕墻的實(shí)施難度確保完成效果，同時(shí)有效控制造價(jià)，取得了一舉三得的效果。同時(shí)，設(shè)計(jì)巧妙地通過在折板幕墻側(cè)面設(shè)置開啟扇的方式，確保塔樓主要視線可及處表皮的視覺效果，既保證室內(nèi)的自然通風(fēng)又實(shí)現(xiàn)立面的整潔完整。

（5）高效經(jīng)濟(jì)的結(jié)構(gòu)設(shè)計(jì)

塔樓采用型鋼混凝土柱-型鋼梁-鋼筋混凝土核心筒的混合結(jié)構(gòu)體系，自重更輕，對(duì)抗震更加有利的同時(shí)也大幅降低了基礎(chǔ)成本?；旌辖Y(jié)構(gòu)充分發(fā)揮鋼材和混凝土兩種材料的優(yōu)勢(shì)，外框架以鋼構(gòu)件為主，抗震延性更高、內(nèi)筒以鋼筋混凝土為主，抗側(cè)剛度更好。

三角形平面和斜柱是結(jié)構(gòu)設(shè)計(jì)的難點(diǎn)。結(jié)構(gòu)設(shè)計(jì)首先對(duì)三角形平面角部做鉆石狀切割鈍化處理，消解核心筒角部的應(yīng)力集中，同時(shí)，設(shè)計(jì)采用鋼梁上翼緣鋪設(shè)鋼板，再澆筑鋼筋混凝土樓板的組合形式。通過鋼梁、鋼板和混凝土板共同承擔(dān)結(jié)構(gòu)體形變化而產(chǎn)生的樓板平面內(nèi)拉力，在有限的結(jié)構(gòu)投入下，取得了最好的結(jié)構(gòu)效果。

采用組合梁進(jìn)行結(jié)構(gòu)設(shè)計(jì)以控制結(jié)構(gòu)梁高，同時(shí)利用鋼梁的受力特點(diǎn)，采用框架梁腹板開洞設(shè)備管線穿越形式，有效確保樓層凈高。作為一個(gè)標(biāo)準(zhǔn)高4m 的超高層建筑，主要辦公區(qū)域凈高均在2.9m以上?！?/p>

1 錦江外景/Exterior view from Jin River

2 三色路外景/Exterior view from Sanse Road

"Star of Xinhua" Research and Development Centre is located in the core area of Jinjiang Industrial Park outside the South Third Ring Road of Chengdu,bordered by the Third Ring Road to the north and Jinjiang River to the west.The R& D Centre consists of two 170-metre towers,a fourstorey podium and a basement level.The gross floor area is about 226,000 square metres.The project served as the headquarter of Xinhua Publishing and Distribution Group Co.,Ltd.Winshare Publishing & Media Co.,Ltd.It is also the largest cultural industry base in western China.

The project has excellent location,but the construction conditions were quite challenging.First of all,the area of site is very tight.The proposed site area is less than 20,000 square metres,and it is a long,narrow east-west plot.Secondly,as a milestone project of Xinhua Publishing and Distribution Group Co.,Ltd.Winshare Publishing & Media Co.,Ltd,the project is highly positioned,large in scale,and complex in function.The building includes corporate headquarters,cultural industry base,offices,commercial space and other functions,with a gross floor area of over 220,000 square metres.Thirdly,the project is adjacent to the central axis along the southern extension of Hongxing Road and faces Jinjiang River,the mother river of Chengdu,making it a focal point of the city.

Innovative approaches were applied in this project to address various challenges:

(1) Using traditional symbols in a modern way to build a super corporate headquarter

The project adopts an innovative architectural design approach.Nearly 180 metres high,the building gradually shrinks upward,to give the massive body an elegant line,which implies the"mountain of books" in Chinese traditional culture.Moreover,the building is tall and straight,which symbolises the "cultural highland" of the Land of Abundance.

Furthermore,two traditional Chinese cultural symbols,bamboo and movable type,are represented in the design in the form of opening bamboo slips on the fa?ade,associated with modern curtain wall technology,creating a distinctive architectural shape.

(2) Pursuing perfect integration of building and city under limited site condition

In response to the high plot ratio and the long and narrow site,a unique heart-shaped plan was chosen to open up the space to the main urban road adjacent to the Jinjiang River.As a result,it effectively reduces the spatial oppression and mutual interference between the two towers,while reducing direct western sunlight and creating more indoor space facing the Jinjiang River and northsouth light,improving the experience of use.

Furthermore,in order to solve the layout problem under the ultra-high plot ratio,the design adopts the combination of high-rise twin towers and podium to integrate the building mass as far as possible,so as to ensure the openness at the intersections of major urban roads.Meanwhile,sufficient visibility corridors connecting the Jinjiang River are assured between the two towers,allowing for future development,satisfying functional needs while optimising urban spatial experience.

(3) Creating efficient,green and modern office space

The triangular plan and the tall and compact form address the needs of construction under harsh conditions and meet the needs of establishing corporate image,but also bring about irregular interior spaces.In response to this issue,the design creatively adopts a trapezoidal core to echo the triangular plan,while structural columns of the same slope are used to ensure the integrity of the interior space.

At the same time,in order to create a comfortable place for employees with a high plot ratio,high-ceiling green spaces are set up on every other floor of the tower.Through the threedimensional connection of the public space,a breathable green lung is formed inside the building.This enables employees to be in fullcontact with nature andalso effectively regulates the environment.Also,the two towers are connected by a roof garden to form a green and natural office environment,alleviating the problem of inadequate landscape caused by land constraints.

(4) Accurate detail control

In order to ensure the fineness of the curtain walls,the cantilever structure was selected to meet the streamlined shape of the building and to echo the bookshelf concept,not only to correspond to the idea of "mountain of books" but also to reduce the difficulty of the implementation of the curtain walls to ensure the completion effect,while effectively controlling the cost.

At the same time,the design cleverly sets openable windows on the side of the folding plate curtain walls to ensure the visual effect of the architectural skin,ensuring both the natural ventilation of the interior space and the neatness and integrity of the fa?ade.

(5) Cost-efficient structural design

The tower adopts a hybrid structural system,which has lighter dead load and more conducive to seismic resistance,while also greatly reducing foundation costs.The hybrid structure takes full advantage of both steel and concrete materials.The outer frame is dominated by steel elements for higher seismic ductility and the inner core tube is dominated by reinforced concrete with better lateral stiffness.

The triangular plan and inclined columns are the difficulties in the structural design.In the structural design,the diamond-shaped cutting of the angles of the triangular plan was used to reduce the stress concentration in the corners of the core tube.At the same time,the design uses a combination of steel beams with steel plates laidon the upper flanges before reinforced concrete floor slab poured.Withthe steel beam,steel plate and concrete slabs jointly bearing the tensile forces caused by the change in structural form,the best structural effect is achieved with limited structural input.

The composite beam design was used to control the height of the structural beams.Also,the mechanical characteristics of steel beam was considered by opening holes on the frame beams to allow equipment pipework to pass through and thus effectively ensures the clear height of the space.As a super high-rise building with a standard floor height of 4 metres,the design achieves a clear ceiling height of above 2.9 metres in the main office area.□

3 塔樓頂部細(xì)節(jié)/Details of top of the tower

4 入口/Entrance