“新华之星”科研生产基地，四川，中国

建筑设计：四川省建筑设计研究院有限公司，山鼎设计

项目信息/Credits and Data

地点/Location:中国四川成都市锦江区/Jinjiang District,Chengdu,Sichuan,China

客户/Client:四川新华发行集团有限公司，新华文轩出版传媒股份有限公司/Sichuan Xinhua Publishing Group Co.,Ltd.,Xinhua Wenxuan Publishing Media Co.,Ltd.

主持建筑师/Principal Architect:李欣恺/LI Xinkai

设计团队/Design Team:王昆，张碚贝，彭涛，钟于涛，胡斌，邹秋生，肖波，黎波，甘灵丽，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

结构设计/Structural Design:四川省建筑设计研究院有限公司/Sichuan Architectural Design and Research Institute Co.,Ltd.

结构工程师/Structural Engineers:唐锦蜀，蔡仁辉，张堃，陈刚/TANG Jinshu,CAI Renhui,ZHANG Kun,CHEN Gang

施工图设计/Architects of Record:四川省建筑设计研究院有限公司/Sichuan Architectural Design and Research Institute Co.,Ltd.

承建/General Contractor:中国五冶集团有限公司/China Metallurgical Group Co.,Ltd.

结构体系/Structural System:型钢混凝土柱-型钢梁-钢筋

混凝土核心筒混合结构体系/Hybrid structure system

场地面积/Site Area:17,182.96 m2

基底面积/Built Area:6742.36 m2

建筑面积/Floor Area:226,714.5 m2

建筑高度/Height:172.2 m

层数/Storey:地上42层，地下4层/42 storeys aboveground,4 storeys underground

设计时间/Design Period:2011-2013

竣工时间/Completion Time:2017

绘图/Drawings:张碚贝，程媛/ZHANG Beibei,CHENG Yuan

摄影/Photos:吕锐/LYU Rui

新华之星科研生产基地位于成都市城南三环路外侧锦江工业园核心区，北临三环路，西面锦江。总建筑面积约226,000m2，由两栋约170m 塔楼、4层裙楼及地下室组成。项目定位为新华发行集团/文轩出版传媒的企业总部和西部最大的文化产业基地。

项目用地位置优越，但建设条件却颇有挑战。首先，用地紧张，拟选址基地面积不足20,000m2，且为一东西向狭长地块；其次，作为新华发行集团/文轩出版传媒的企业里程碑项目，项目的定位高、规模大且功能复杂，建筑包含了企业总部、文化产业基地、办公配套用房、配套商业等多种功能，总建筑面积逾220,000m2；第三，项目毗邻红星路南延线城市中轴，直面成都的母亲河锦江，属于城市功能和视觉的聚焦地。

面对一系列的挑战，设计采用了创新性的设计手法：

（1）通过传统文化符号的现代应用塑造一个在视觉焦点上的企业地标

设计采用具有突破性的建筑造型手法，近180m 的建筑通过逐渐收分，使得庞大的体型呈现出极为优雅的线条，形成寓意“书山”的建筑造型，建筑态势挺拔升腾，象征着天府之国的“文化高地”。

同时，提取传统文化中的“竹简”“活字”两个与书籍出版最为密切相关的文化符号进行抽象并与现代建材有机关联，通过设计手法进行重新构成，以平板、折板幕墙的组合形式最终呈现，在立面上形成富有韵律的书简开合，营造出独具特色的建筑造型。

（2）力求有限用地下的城市与建筑的完美契合

针对项目容积率偏高而地块狭长的特点，选用独特的心型平面形式，向毗邻锦江的城市主干道打开空间，有效消减了两栋塔楼对城市的空间压迫感和相互干扰，同时减少了直接西晒，创造了更多直面锦江的和南北向采光的室内空间，营造出良好的使用感受。

同时，为了解决超高容积率下的布局问题，设计采用了“超高层双塔+裙楼”的组合形式尽量整合建筑体，在主要城市道路交口确保对城市空间的有效退让。同时双塔间为后续开发用地留出足够的视线通廊连通锦江，在确保功能的同时兼顾城市的空间感受。

（3）打造高效、绿色的现代办公空间

三角形的平面和挺拔收分的形体，解决了严苛条件下的建设和企业形象的需求，但同样带来了不规则的室内空间。为了应对这一问题，设计创造性地采用了梯形核心筒以呼应三角形平面，同时针对建筑形体的收分，采用相同斜率的结构柱，确保了室内空间的完整性。同时，在超高的容积率下，为了给员工创造舒适场所，塔楼隔层设置了挑高空中绿化空间，通过公共空间的立体贯通，在建筑内部形成可呼吸的绿肺，既能使员工充分接触自然，也能有效调节环境，同时两栋塔楼间以屋顶花园联系，形成绿色自然的办公环境，缓解用地紧张带来的景观不足问题。

（4）保证立意实现的建构细节控制

本项目表皮设计经过精心思考，为了确保幕墙精细度，通过外挑楼层板迎合体形的流线形收分，以呼应书架意境造型，既迎合了“书山”的立意，又降低幕墙的实施难度确保完成效果，同时有效控制造价，取得了一举三得的效果。同时，设计巧妙地通过在折板幕墙侧面设置开启扇的方式，确保塔楼主要视线可及处表皮的视觉效果，既保证室内的自然通风又实现立面的整洁完整。

（5）高效经济的结构设计

塔楼采用型钢混凝土柱-型钢梁-钢筋混凝土核心筒的混合结构体系，自重更轻，对抗震更加有利的同时也大幅降低了基础成本。混合结构充分发挥钢材和混凝土两种材料的优势，外框架以钢构件为主，抗震延性更高、内筒以钢筋混凝土为主，抗侧刚度更好。

三角形平面和斜柱是结构设计的难点。结构设计首先对三角形平面角部做钻石状切割钝化处理，消解核心筒角部的应力集中，同时，设计采用钢梁上翼缘铺设钢板，再浇筑钢筋混凝土楼板的组合形式。通过钢梁、钢板和混凝土板共同承担结构体形变化而产生的楼板平面内拉力，在有限的结构投入下，取得了最好的结构效果。

采用组合梁进行结构设计以控制结构梁高，同时利用钢梁的受力特点，采用框架梁腹板开洞设备管线穿越形式，有效确保楼层净高。作为一个标准高4m 的超高层建筑，主要办公区域净高均在2.9m以上。□

1 锦江外景/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 façade,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 façade.

(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 塔楼顶部细节/Details of top of the tower

4 入口/Entrance