Design Criteria for Safety Nets in Building Construction

Eulogio, Enrique Gonzalo Segovia; Más, Ramón Irles

doi:10.1061/40889(201)210

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…Equivalence was adjusted according to available experimental results for Vtype nets [6]. Due to the lack of real validation trials, we have assumed the validity for the type of nets studied in this work.…”

Section: Floor-to-ceiling Netsmentioning

confidence: 99%

“…To predict and evaluate certain geometrical and mechanical variables in net behaviour, and the effects on the injured person, several models have been analysed, based on previous research carried out by several of the above mentioned authors in the course of the last 10 years [4][5][6], using the Finite Elements technique, and simulating the fall of such ballast into the safety net. The models analysed and the results are laid out below, for both large and little nets.…”

Section: Introductionmentioning

confidence: 99%

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Floor-to-ceiling vertical safety nets

Romero¹,

Riquelme²,

Irles³

et al. 2011

WIT Transactions on the Built Environment

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Of all the accidents caused as a result of human activity, free fall in building construction is the one that attracts most social interest, not only because of the economic cost, but also because of the high cost in human lives, as can be seen from the statistics.Historically, European governments have made important efforts to regulate the characteristics and use of safety devices, mainly by passing laws and regulations. One of those regulations is currently being developed by AENOR's Spanish Working Group AEN/CTN81/SC2/GT7. At the time of writing, it is still only a draft document.Numerical tests were performed during the present work using ANSYS finite element software, on different variations (square or diamond geometrical shapes, elasticity, eccentric impact, the material used for the perimeter cables, initial prestressing) of a safety net hit by a 100 kg ballast with a velocity of almost 6 m/s. The results are compared to those obtained in previous work for other types of nets, as well as obtaining stress results on the ballast, the net and the anchorages, maximum net deflection, and its consequences on the victim's safety.By these means, we are trying to advance our understanding of such nets, making it possible to answer questions that have arisen when drafting the new regulation, as described in detail in the paper.

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Section: Floor-to-ceiling Netsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Floor-to-ceiling vertical safety nets

Romero¹,

Riquelme²,

Irles³

et al. 2011

WIT Transactions on the Built Environment

View full text Add to dashboard Cite

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Design Method and Impact Response of Energy-Consuming High-Fall Flexible Protection System for Construction

Liao

Dong³

et al. 2023

Buildings

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High-fall accidents refer to accidents where construction personnel, building materials, and equipment fall from a height, usually resulting in serious casualties and significant economic losses. This paper proposes a high-fall flexible protection system and its design approach with a tensile yield energy-consuming mechanism to solve high-fall accidents. The design approach based on component characteristics that obtained through tests contains energy matching, component internal force balance, and a two-level energy consumption mechanism. Component tests were conducted with mesh bursting tests and energy dissipator static tensile tests to obtain the characteristics of the intercepting net under the flexible boundary condition, and the force-displacement model of the ring-type energy dissipater. Combined with an actual project, we designed a high-fall flexible protection system with a protection energy level of 800 kJ for the core tube of an ultra-high-rise building construction using this method. The impact of dynamic response under multiple cases including the overall fall of the construction formwork was analyzed by dynamical numerical calculation models. The result shows that the system can effectively intercept high-falling objects and exhibit good two-stage energy dissipation characteristics to consume the impact energy. Compared with the protection system without an energy consumption mechanism, the internal force response of the steel wire rope and the suspended frame reduce by about 60%, and the energy consumption capacity increase more than six times. The protection technique proposed in this paper can effectively solve the problem of high-level impact protection such as falling construction formwork equipment, and improve construction safety.

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Design Criteria for Safety Nets in Building Construction

Cited by 2 publications

References 1 publication

Floor-to-ceiling vertical safety nets

Floor-to-ceiling vertical safety nets

Design Method and Impact Response of Energy-Consuming High-Fall Flexible Protection System for Construction

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