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- 저자 : Ghisi, Enedir (검색결과 2 건)
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Existing concrete dams: loads definition and finite element models validation
Colombo, Martina,Domaneschi, Marco,Ghisi, Aldo Techno-Press 2016 Structural monitoring and maintenance Vol.3 No.2
We present a methodology to validate with monitoring data finite element models of existing concrete dams: numerical analyses are performed to assess the structural response under the effects of seasonal loading conditions, represented by hydrostatic pressure on the upstream-downstream dam surfaces and thermal variations as recorded by a thermometers network. We show that the stiffness effect of the rock foundation and the surface degradation of concrete due to aging are crucial aspects to be accounted for a correct interpretation of the real behavior. This work summarizes some general procedures developed by this research group at Politecnico di Milano on traditional static monitoring systems and two significant case studies: a buttress gravity and an arch-gravity dam.
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Urban rainwater harvesting systems: Research, implementation and future perspectives
Campisano, Alberto,Butler, David,Ward, Sarah,Burns, Matthew J.,Friedler, Eran,DeBusk, Kathy,Fisher-Jeffes, Lloyd N.,Ghisi, Enedir,Rahman, Ataur,Furumai, Hiroaki,Han, Mooyoung Elsevier 2017 Water research Vol.115 No.-
<P><B>Abstract</B></P> <P>While the practice of rainwater harvesting (RWH) can be traced back millennia, the degree of its modern implementation varies greatly across the world, often with systems that do not maximize potential benefits. With a global focus, the pertinent practical, theoretical and social aspects of RWH are reviewed in order to ascertain the state of the art. Avenues for future research are also identified. A major finding is that the degree of RWH systems implementation and the technology selection are strongly influenced by economic constraints and local regulations. Moreover, despite design protocols having been set up in many countries, recommendations are still often organized only with the objective of conserving water without considering other potential benefits associated with the multiple-purpose nature of RWH. It is suggested that future work on RWH addresses three priority challenges. Firstly, more empirical data on system operation is needed to allow improved modelling by taking into account multiple objectives of RWH systems. Secondly, maintenance aspects and how they may impact the quality of collected rainwater should be explored in the future as a way to increase confidence on rainwater use. Finally, research should be devoted to the understanding of how institutional and socio-political support can be best targeted to improve system efficacy and community acceptance.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A review of practical, theoretical and social aspects or urban rainwater harvesting systems. </LI> <LI> Much of the implemented systems do not consider the multi-purpose nature of RWH. </LI> <LI> Need of datasets including water saving, stormwater management and energy consumption aspects. </LI> <LI> Institutional and socio-political support to improve RWH efficacy and community acceptance. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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