Linkage-based movable bridges: Design methodology and three novel forms

Thrall, Ashley P.; Adriaenssens, Sigrid; Payá-Zaforteza, Ignacio; Zoli, Theodore P.

doi:10.1016/j.engstruct.2011.12.031

Cited by 39 publications

(11 citation statements)

References 12 publications

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“…Some design concepts of past movable bridges and mechanisms of deployable structures in engineering may serve as an inspiration for designing bridges for disaster relief. Some researchers have presented the kinematic principles of movable bridges (Clevett et al, 1986) and improved the sustainability of movable bridges by finding new forms that integrate structural and mechanical systems (Thrall, 2011;Thrall et al, 2012;Wallner and Pircher, 2007).…”

Section: Introductionmentioning

confidence: 98%

Development of portable footbridges for disaster relief

Yin¹

2016

Proceedings of the Institution of Civil Engineers - Bridge Engi

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This paper describes the design, analysis, fabrication and testing of portable pedestrian bridges for disaster relief. Two main ideas were used in the design of these bridges. One was the pantograph mechanism exploited to expand bridge structures rapidly and the other was the rigid body rotation of the bridge deck utilised to span a river without piers.Numerical simulations and experimental results showed that the bridges developed satisfy the specified design requirements. This study may provide engineering consultants with design concepts for rescue bridges that are convenient to store, carry, assemble, install, dismantle and reuse.

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Section: Introductionmentioning

confidence: 98%

Development of portable footbridges for disaster relief

Yin¹

2016

Proceedings of the Institution of Civil Engineers - Bridge Engi

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“…It can take the form of bascule, swing and vertical lift (Koglin, 2003;Thrall et al, 2012). Numerous movable bridges have been built over the last century.…”

Section: Introductionmentioning

confidence: 99%

Installation and control technology of the Haihe movable bridge, China

Huang¹,

Shang²,

Zhang³

2014

Proceedings of the Institution of Civil Engineers - Bridge Engi

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2 3The Tianjin Haihe movable bridge in China has the largest span among similar bridges in Asia. Owing to the dual characteristics of being both a bridge and heavy machinery with mechanical, hydraulic, electric and intelligent control devices, the construction of its steel box girder requires appropriate installation and control technology. Because of the stringent on-site navigation restrictions and blockage conditions, as well as mechanical characteristics during construction, a semi-supported cantilever installation and erection scheme is proposed, in which a bridge-erecting machine, temporary steel pipe support, bridge cantilever construction and other traditional methods are used in combination. Unlike traditional bridge closure technologies, new alignment closure and central locking closure control technologies are employed. The latter requires that the locking device be precisely assembled and adjusted to be horizontal for the suitable operation of the central locking equipment. The execution of this construction practice shows that the technology is feasible and effective.

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“…Such facade modules depend on mechanical hinges, multiple actuation devices and controls [42]. The sliding and rotating components of the hinges require regular maintenance, component replacement and out-of-operation costs [43]. Adaptive modules with multiple actuators (such as servomotors or hydraulic pistons) may require perfect synchronization, to avoid residual stresses building up, in addition to well-defined maintenance and replacement schemes, to eliminate large out-of-operation costs.…”

Section: Adaptive Enclosuresmentioning

confidence: 99%

Dialectic Form Finding of Passive and Adaptive Shading Enclosures

et al. 2014

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Form finding describes the process of finding a stable equilibrium shape for a system under a specific set of loads, for a set of boundary conditions and starting from an arbitrary initial geometry. However, form finding does not traditionally involve performance constraints such as energy-related criteria. Dialectic form finding is an extension of the process integrating energy-related design aspects. In this paper, dialectic form finding is employed as an approach for designing high performance architectural systems, driven by solar radiation control and structural efficiency. Two applications of dialectic form found shading enclosure structures, a passive and an active one, are presented. The first application example is a site-specific outdoor shading structure. The structure is based on a louver system designed to provide protection from ultraviolet radiation over a pre-defined target only when required, promoting natural lighting and ventilation. The second application example is a shape-shifting modular faç ade system that adapts its opacity in response to environmental fluctuations. The system can thus improve the environmental performance of a building. Moreover, the system explores elastic deformations for shape changes, reducing actuation requirements. These examples OPEN ACCESSEnergies 2014, 7 5202 highlight the potential of the dialectic form-finding strategy for the design of high performance architectural integrated structures.

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Linkage-based movable bridges: Design methodology and three novel forms

Cited by 39 publications

References 12 publications

Development of portable footbridges for disaster relief

Development of portable footbridges for disaster relief

Installation and control technology of the Haihe movable bridge, China

Dialectic Form Finding of Passive and Adaptive Shading Enclosures

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