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首页> 外文期刊>Journal of structural engineering >Modular Connector for Resilient Grid-Shell Structures
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Modular Connector for Resilient Grid-Shell Structures

机译：弹性网格壳结构的模块化连接器

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In the design, fabrication, and erection of grid shells, a major challenge is the nodal connector between members. Designers typically select a structure's form and then design the nodal connectors to meet geometric and structural demands. However, this can lead to complicated connections that are difficult and expensive to fabricate. Each connector is also often unique. To address these challenges, this paper investigates a new approach in which a novel modular connector is designed for case of fabrication and erection, and then structural forms are developed that use the connector repeatedly to join wide flange steel members via splice connections in double shear. This approach modularizes the nodal connector, which is a prefabricated, steel connector with starter segments that include webs and flanges. The flanges and webs of the modular connector and the members are joined independently, thereby achieving a moment-resisting connection. This facilitates trusslike, membranelike, or beamlike behavior and allows loads to be redistributed in the case of sudden member loss or replacement, thereby providing enhanced resiliency. Variability in form is achieved by bending the flange splice plates. This paper investigates the modular connector for free-form undulating grid shells and for rational structural forms developed through a proposed form-finding methodology. The proposed methodology relies on thrust network analysis coupled with geometric and structural constraints. The promise of the modular connector and the proposed methodology is demonstrated through finite-element numerical analyses. (C) 2021 American Society of Civil Engineers.
机译：在网格壳的设计，制造和勃起，主要挑战是构件之间的节点连接器。设计人员通常选择结构的形式，然后设计节点连接器以满足几何和结构需求。然而，这可能导致复杂的连接，这是难以且昂贵的制造。每个连接器也经常是独一无二的。为了解决这些挑战，本文调查了一种新的方法，其中设计了一种新型模块化连接器，用于制造和勃起，然后开发结构形式，该结构形式通过双剪切中反复使用连接器加入宽法兰钢构件。该方法模块化了节点连接器，该节点连接器是预制的钢连接器，其具有包括腹板和法兰的起动器段。模块化连接器和构件的凸缘和腹板独立地连接，从而实现了力矩的连接。这促进了Trusslike，Membranelik或Beamlike行为，并且在突然的成员损失或更换的情况下允许载荷重新分配，从而提供增强的弹性。通过弯曲法兰剪接板来实现形式的变异性。本文调查了通过提出的形成方法开发的自由形状起伏的栅格壳和结构形式的模块化连接器。所提出的方法依赖于推力网络分析，耦合几何和结构约束。通过有限元数值分析证明了模块化连接器和所提出的方法的承诺。 （c）2021年美国土木工程师协会。

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