Mechanical behavior of steel anchor beams on pylons of cable-stayed bridge under construction

doi:10.1201/b14896-5

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Section: Resultsmentioning

confidence: 99%

“…The impact of building design on the shadow effect was assessed in [43], showing how shorter urban buildings cause higher surface and near-surface temperatures during the daytime. Hu and Liao [44] suggest how a suitable space distance of buildings contributes to improve ventilation between them, and the new building position in Corso del Popolo seems to match the favourable conditions in [44]. It is clear from Figure 5 how the new construction area (pixels inside the circle) produces a mitigation of the SUHI with respect to the heat island of the built-up area located in the upper part of the reported images (the latter area is present both pre-and post-interventions, as shown in Figure 2).…”

Section: Resultsmentioning

confidence: 99%

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Remote Sensing Techniques for Urban Heating Analysis: A Case Study of Sustainable Construction at District Level

et al. 2017

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Abstract:In recent years, many new districts in urban centres have been planned and constructed to reshape the structure and functions of specific areas. Urban regeneration strategies, planning and design principles have to take into account both socioeconomic perspectives and environmental sustainability. A district located in the historical city centre of Terni (Italy), Corso del Popolo, was analysed to assess the construction effects in terms of surface urban heat island (SUHI) mitigation. This district is an example of urban texture modification planned in the framework of the regeneration of the ancient part of the town. The changes were realised starting from 2006; the new area was completed on June 2014. The analysis was carried out by processing Landsat 7 ETM+ images before and after the interventions, retrieving land surface temperature (LST) and albedo maps. The map analysis proved the SUHI reduction of the new area after the interventions: as confirmed by the literature, such SUHI mitigation can be ascribed to the presence of green areas, the underground parking, the partial covering of the local roadway and the shadow effect of new multi-storey buildings. Moreover, an analysis of other parameters linked to the impervious surfaces (albedo, heat transfer and air circulation) driving LST variations is provided to better understand SUHI behaviour at the district level. The district regeneration shows that wisely planned and developed projects in the construction sector can improve urban areas not only economically and socially, but can also enhance the environmental impact.

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Section: Resultsmentioning

confidence: 99%