Bridge construction equipment

2022 ◽  
pp. 827-852
Author(s):  
Alessio Pipinato

Chapter 2 overviews the historical development and past research into temporary structures from 1970 up to 2016 and describe the various problems that have occurred necessitating changes to traditional design and construction techniques. The survey covers tubular, proprietary and modular scaffolds, bridge falsework as well as bridge construction equipment. Particular areas emphasised are the changes introduced by the use of advanced structural analysis techniques and the need for changes in procedures following the analyses of collapses of temporary structures. An overview of various solutions is presented, including the use of different materials (steel, aluminium, timber and bamboo). The chapter shows that same analysis procedures are used for these different materials. The chapter then overviews the actions acting on temporary structures such as permanent loads and variable construction loads and finishes with an introduction to failures of falsework and scaffolding structures.


2007 ◽  
Vol 34 (10) ◽  
pp. 1247-1256 ◽  
Author(s):  
Amin Hammad ◽  
Cheng Zhang ◽  
Mohamed Al-Hussein ◽  
Germain Cardinal

Workspace conflicts are one of the important problems that can delay construction activities, reduce productivity, or cause accidents that threaten the safety of workers. Workspace planning is particularly important in the case of large infrastructure projects, such as bridge construction, and rehabilitation projects where equipment with complex workspace requirement is required. This paper aims to extend the previous research on workspace representation and analysis in the case of large infrastructure projects focusing on the following issues: (i) specific representation of equipment workspaces using composite shapes, (ii) semiautomatic generation and analysis of workspaces, and (iii) development of a prototype system that can generate workspaces and detect spatiotemporal conflicts in a three-dimensional environment. The computational aspects of the proposed approach are discussed and demonstrated through the development of a prototype system, which has been applied in a case study of the deck replacement of Jacques Cartier Bridge in Montréal.Key words: workspace analysis, spatiotemporal conflicts, construction equipment, infrastructure projects, bridge redecking, constructive solid geometry.


Author(s):  
José M. S. Soares ◽  
Pedro Pacheco ◽  
Hugo Coelho ◽  
André Resende ◽  
Diogo Carvalho ◽  
...  

<p>Structural safety may be seen as an outcome of 3 major factors: Design, Construction/Erection and Materials. Each of these factors is usually governed by specific standards. In order to reach a satisfactory outcome, the standards should ideally be coherent and complementary. In the regions that led the development of structural engineering (US, Europe, Japan) it took decades to develop articulated standards and this development is still ongoing – for instance, improvement of materials and quality control promote material reduction, safety factors or even incorporation of new materials into design standards.</p><p>As globalization continues to accelerate, structural engineering companies simultaneously face global competition and new global opportunities. Challenges arise in situations in which Design, Construction and Materials’ standards are not governed by a common language or background. The use of large bridge construction equipment such as LG or MSS is widespread in Europe and North America. Increasing implementation of modern bridge construction processes in developing regions not yet familiarized with inherent construction equipment bring new challenges in terms of safety and standard harmonization. Some of these challenges are addressed in this paper. Main conclusions drawn in the end may be generalized to other design and construction activities.</p>


2012 ◽  
Vol 22 (3) ◽  
pp. 365-379 ◽  
Author(s):  
João André ◽  
Robert Beale ◽  
António Baptista

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