Smith Creek Pedestrian Bridge By design/buildLAB

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这个项目位于经济拮据的弗吉尼亚州福吉克利夫顿铁路镇，该镇曾经因工业制造而繁荣，如今后工业化时代，小镇面临着城市更新和复兴。这个冷清的地方被改造和复兴，并在重建后的小镇中心提供急需的公共空间，这座小桥便是重整计划中的一个振兴元素。

桥体位于一个公园和一条小溪旁，弯曲的桥跨越小溪，克服地形高差，联系公园与附近新建的剧院。小桥提供坡道和台阶两种路径，结构优雅，造型轻盈，在绿树的掩映下拥有恰当的存在感。除了桥，公园还有几个大草坪，一些小花坛，树阵，露天剧场等主要元素。

临着茂密树林，横跨小溪的人行桥提供坡道和台阶两种路径。

The project is situated in the economically  strained Virginia rail town of Clifton Forge. It is the 2nd phase of the redevelopment  of a post-industrial brownfield  into a public  park and performance  space  which aspires to inject a distinct sense of identity and place at the heart of the community.

This second phase of the project includes a pedestrian bridge, park space and a creek access. The idea driving the design is that the built elements emerge out of the landscape of the park. The bridge is a bent path, which ramps and steps, inviting people to wander as well as providing a direct link, over the creek, between  the new ampitheatre  and the historic  downtown.  It is supported  at mid-span  by a forest  of  leaning columns, which create a sheltered repose along the creek. Transparency was an integral part of the overall concept;  the bridge deck and rail assembly maintain a thin profile, giving the bridge a subtle presence on the site. The entire length of the bridge is ramped to accommodate the site’s significant elevation  changes.  The park is divided into multiple  landscaped  areas, including  a line of tall grasses along the creek, a labyrinthine  butterfly  garden adjacent  to the amphitheatre,  a beach along the creek, and a series of grass lawns at the center.

桥体结构优雅，造型轻盈

混凝土基础，钢结构支撑

作为小镇重整计划的一部分，人行桥为人们提供了一个休闲舒适可停留的场所

树林掩映中，不喧宾夺主的恰当存在

四个主材分别是：混凝土，钢结构，白橡木，金属外皮复合板。回收的各种金属复合板使用在露天剧场的外表上，这些金属形成斑驳的独特外观

克服地形，上上下下的享受

夜景。除人行桥外公园还有几个大草坪，一些小花坛，树阵，露天剧场等主要元素

（上图）桥上的照明设施安装在栏杆下

 

项目是可持续的。四个主材分别是：混凝土，钢结构，白橡木，金属外皮复合板。混凝土作为地基，钢结构支撑着桥梁，其中结构采用螺栓固定而非焊接，这使得桥梁可以容易的组装，并在以后还能回收利用。桥面采用了10公里以内产出的白橡木，同时也使用到一部分回收木材。回收的各种金属复合板使用在露天剧场的外表上，这些金属形成斑驳的独特外观。

 

Sustainability

The entire project  is constructed with 4 primary materials: concrete,  carbon steel, white oak and metal- skinned composite  panels.

Major  concrete  foundations   were  limited  by  supporting   half  of  the  bridge  on  an  existing  concrete retaining wall. This wall underwent rigorous testing to verify its strength and stability. Its ability to support the bridge loads minimized site-work  and the manufacturing  of new concrete.

The structural  steel  frames  were  pre-fabricated in modules  and  bolted  (rather  than  welded)  on-site, allowing  the  bridge  to  be  easily  and  efficiently  assembled,  but  more  importantly  limiting  waste  and allowing it to be dismantled and recycled at the end of its service life.

The bridge deck is clad entirely in locally and sustainably harvested and milled white oak (within 10 miles of the site). Frames and handrails are constructed from antique white oak timbers,  reclaimed  from the site’s previous warehouse (materials, reclaimed from the warehouse were also used to frame and clad a farmer’s market pavilion in the neighboring town).

The metal-skinned  (zinc,  stainless  steel, titanium,  and aluminum)  composite  panels  are end-runs  that were diverted  from the manufacturer’s waste stream. They give the amphitheatre  its distinctive  mottled appearance, publicly  express the projects  underlying environmental  consciousness,  and tie the material palette of the bridge to that of the amphitheatre.

 

Here is more information form  design/buildLAB

Urban Revitalization
Clifton Forge, Virginia is representative of many previously prosperous  American rail towns, struggling to survive as the industries,  which  fueled their growth,  continue to abandon  them. Tucked  within  a small valley along the Jackson River, this rural Appalachian town faces severe urban challenges. Deserted storefronts,  empty houses,  and decaying infrastructure  all contribute  to an underlying sense of abandonment.

The redeveloped  site provides  much needed public  space along the creek, at the center of town.  The bridge  is  a  vital  component   of  civic  infrastructure   that  reunites  the  once  divided  town,  promotes walkability,   and  knits  together   the  elements  of  arts-based   community   revitalization   efforts   within downtown.
Collaboration
The Smith Creek Pedestrian Bridge is a charitable  undertaking  that was designed  and built by 17 third year undergraduate  Architecture  students  from Virginia Tech’s  design/buildLAB. After studying the town and  working   with  the  community   to  develop  a  program,   all  17  students   made  individual   design propositions for the project.  From those, students  iteratively  merged their proposals.  In this way, all of the students  contributed ideas to the discussion.  It was imperative from a pedagogical  perspective  that not  one “scheme” was  chosen.  Rather,  all students  collaborated  to  develop  the  final design  for  the project.
SMITH CREEK PEDESTRIAN BRIDGE PROJECT
www.designbuildLAB.org
Project Address:513 Church Street, Clifton Forge, VA 24422
Design and Construction Team
design/buildLAB
VA Tech School of Architecture  + Design

Student Team
Bethel  Abate,  Aiysha  Alsane,  Justin  Dennis,  Jennifer  Leeds,  Stephanie  Mahoney,
Stephen  Perry, Amanda  Schlichting,   Claudia  Siles,  Samuel  “Aaron” Williams,  Ryan
Hawkins,  Catherine  Ives,  Anna Knowles-Bagwell, Michael Kretz, Fernanda Rosales,
Katherine Schaffernoth, Daniel Vantresca, Bryana Warner

Professors
Marie Zawistowski,  Architecte DPLG – Professor of Practice
Keith Zawistowski,  AIA, NCARB, GC – Professor of Practice
Consultant Team
General Contractor
Commonwealth Contracting  Services
Structural Design (gravity loads) Mario Cortes
Structural Engineer (vibration & flood loads) Setareh Structural Engineering
Hydraulic Engineer
Hassan Water Resources
Geotechnical Engineer
Froehling & Robertson, Inc
Steel Fabrication Consultants
Jeffrey Snider, Matthew Tolbert

Owner
Masonic Amphitheatre LLC John Hillert, President

Project Timeline
Design – Spring 2013
Construction  – Spring 2013

Budget
The project  was  funded  by  $25,000  in cash  grants  from  philanthropic   foundations,
$7,500  from  the Clifton Forge Industrial Development  Authority  and significant  in-kind
material and service contributions from local contractors  and suppliers, as well as
national and international product  manufacturers.

Major Materials
Stainless Steel Cable Railing – Jakob, Alpolic Metal Composite  Panels – Mitsubishi
Plastics Composites, White Oak Decking – Union Church Millworks,  Structural Steel –
BMG Metals, Paint – Sherwin Williams, Concrete  and  Reinforcing  Steel  –  Amanda’s
Redimix,  Electrical  Components   –  State  Electric,  LED Lighting  – RAB, Fasteners –
Stafford  Nut & Bolt,  Sod – Lavery Sod Farm, Trees – Cooke’s Gardens, Gravel –
Boxley Materials, Heavy Equipment – United Rentals

Software
Rhino3D OSX, AutoCAD 2012 OSX
Photo Credits© Jeff Goldberg/ESTO

 

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