Di Hu – Författare

Prestressing concrete technology is critical to understanding problems in existing civic structures including railway and highway bridges; to the rehabilitation of older structures; and to the design of new high-speed railway and long-span highway bridges. Analysis and Design of Prestressed Concrete delivers foundational concepts, and the latest research and design methods for the engineering of prestressed concrete, paying particular attention to crack resistance in the design of high-speed railway and long-span highway prestressed concrete bridges. The volume offers readers a comprehensive resource on prestressing technology and applications, as well as the advanced treatment of prestress losses and performance. Key aspects of this volume include analysis and design of prestressed concrete structures using a prestressing knowledge system, from initial stages to service; detailed loss calculation; time-dependent analysis on cross-sectional stresses; straightforward, simplified methods specified in codes; and in-depth calculation methods. Sixteen chapters combine standards and current research, theoretical analysis, and design methods into a practical resource on the analysis and design of prestressed concrete, as well as presenting novel calculation methods and theoretical models of practical use to engineers. Presents a new approach to calculating prestress losses due to anchorage seating Provides a unified method for calculating long-term prestress loss Details cross-sectional stress analysis of prestressed concrete beams from jacking to service Explains a new calculation method for long-term deflection of beams caused by creep and shrinkage Gives a new theoretical model for calculating long-term crack width

The Fabric of Resistance: Textile Workshops and the Rise of Rebellious Landscapes in Colonial Peru documents the impact of Spanish colonial institutions of labor on identity and social cohesion in Peru. Through archaeological and historical lines of evidence, Di Hu examines the long-term social conditions that enabled the large-scale rebellions in the late Spanish colonial period in Peru. Hu argues that ordinary people from different backgrounds pushed back against the top-down identity categories imposed by the Spanish colonial government and in the process created a cosmopolitan social landscape that later facilitated broader rebellion.Hu’s case study is Pomacocha, the site of an important Spanish colonial hacienda (agricultural estate) and obraje (textile workshop). At its height, the latter had more than one hundred working families and sold textiles all over the Andes. Through analysis of this site, Hu explores three main long-term causes of rebellions against Spanish oppression. First, the Spanish colonial economy provided motivation and the social spaces for intercaste (indigenous, African, and mestizo) mixing at textile workshops. Second, new hybrid cultural practices and political solidarity arose there that facilitated the creation of new rebellious identities. Third, the maturation in the eighteenth century of popular folklore that reflected the harsh nature of Spanish labor institutions helped workers from diverse backgrounds gain a systemic understanding of exploitation.his study provides a fresh archaeological and historical perspectives on the largest and most cosmopolitan indigenous-led rebellions of the Americas. Hu interweaves analyses of society at multiple scales including fine-grained perspectives of social networks, demography, and intimate details of material life in the textile workshop. She examines a wide range of data sources including artifacts, food remains, architectural plans, account books, censuses, court documents, contracts, maps, and land title disputes.