更多关于结构，休息后。

More about the structure, after the break.

 © Gernot Riether

(Gernot Riether)

来自项目组：

From the project team: 

轻量级结构：安德伍德展馆的模块是从不同的变化3支柱张紧模块。改变上、下表面之间的距离和改变模块的上、下表面之间的比例，通知了包络的曲率。这些变化还在每个模块内产生不同的旋转，导致包络向不同方向扭曲。结构模拟引擎犀牛膜和袋鼠是展馆结构找形过程中必不可少的工具。

Lightweight structure: The Underwood pavilion’s modules were developed from different variations of a 3strut tensegrity module. Varying the distance between the upper face and the lower face and varying the scale between the upper face and the lower face of the module informed the curvature of the envelope. These variations also generated a different rotation within each module causing the envelope to twist in different directions. The structural simulation engines Rhino Membrane and Kangaroo were essential tools in the form finding process of the pavilion’s structure.

 Exploded Axon. Image © Gernot Riether

爆炸了阿克森。图像C.Gernot Riethe

模块的最终张拉状态只能通过所有的拉索和所有的受压杆达到。整个系统保持松散，除一个外，所有成员都连接在一起。这使得模块能够作为一个松散的、低体积的条状和电缆束(3“x3”x6‘)被有效地堆放和运输。在施工现场，每个模块只能连接一根电缆。使用旋转扣连接最终节点，允许调节模块中的应力，直到其断裂到预测的张拉几何形状为止。56个模块中的每个模块都描述了3‘x3’到4‘x4’的卷。

The final tensegrity state of a module could only be reached with all cables in tension and all bars in compression. The entire system remained loose with all members being connected except one. This allowed for the modules to be stacked and transported efficiently as a loose low–volume bundle of bars and cables (3” x 3” x 6’). At the site of construction only one cable per module had to be joined. Using a turnbuckle to connect the final node allowed regulating the stress in the module until it snapped into the predicted tensegrity geometry. Each of the 56 modules describes a volume of 3’ x 3’ x 3’ to 4’ x 4’ x 4’. 

 © Gernot Riether

(Gernot Riether)

自阴影信封：为了响应特定的上下文，模块被安排成一个张紧的模式。跳过第二行中的每一个模块会产生越来越小的开口，这些空缺被放置在环境框架中。Elastan是一种环保聚合物，最初用于运动服装，用于制作展馆的自动遮阳信封。埃拉斯坦是由长丝制成，比橡胶等非合成材料更耐用。它可以由100%的可再生原料，如再生聚酯生产。一旦所有模块连接起来，每个模块都用弹性织物装饰，形成一个最小的体积，这是由支柱的位置和织物的弹性质量来定义的。

Self-shading envelope: To respond to a specific context the modules were arranged in a tensegrity pattern. Skipping every second module in every second row created smaller and larger openings that were placed to frame the environment. Elastan, an eco-friendly polymer originally used for sportswear was adapted to create the pavilion’s self-shading envelope. Elastan is created from filaments that are more durable than non-synthetic materials such as rubber. It can be produced from 100% renewably sourced raw material such as recycled polyester. Once all modules were connected each module was dressed with an elastic fabric to form a minimal volume that was defined by the location of the struts and the elastic quality of the fabric.

与其他结构体系相比，张拉结构具有很大的优越性。使用主要的张力构件，他们比传统的系统更轻和更强大。作为临时的轻型结构，安德伍德展馆额外利用了张拉系统的自架设行为。以物理引擎为设计工具，说明如何将张拉系统参数化以适应现场和程序。

Tensegrity structures have large advantages compared to other structural systems. Using predominantly tension members they are lighter and stronger than conventional systems. As temporary lightweight structure the Underwood pavilion additionally takes advantage of the self-erecting behavior of tensegrity systems. Using physics engines as a design tool shows how tensegrity systems can be parameterized to adapt to site and program.

 Generation of Overall Structure. Image © Gernot Riether

生成整体结构。图像C.Gernot Riethe

地点Muncie，IN，美国类别时态装置设计和实现Gernot Riether教授，Dipl-ing教授，M.S.Architect，Andrew Wit教授，M.S.项目组：Gernot Riether和Andrew Wit与Noor Al-Noori，Andrew Hemman，Chris Hackders，Charles Koers，Huy Nguyen，Nick Peterson，Steven Putt，阿什利·乌尔巴诺维奇由鲍尔州立大学社区合作伙伴Muncie Maker实验室支持，2014年项目面积18.0平方米

Location Muncie, IN, USA Category Temporal Installations Design and Realization Gernot Riether, Prof. Dipl.-Ing., M.S. Architect, Andrew Wit, Prof. M.S. Project Team: Gernot Riether and Andrew Wit with Noor Al-Noori, Andrew Heilman, Chris Hinders, Charles Koers, Huy Nguyen, Nick Peterson, Steven Putt, Ashley Urbanowich Supported by Ball State University Community Partner Muncie Makers Lab Area 18.0 sqm Project Year 2014 Photographs Gernot Riether