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首页> 外文会议>SP-231; Ned H. Burns Symposium on Historic Innovations in Prestressed Concrete; ; >Advances in Post-Tensioned Parking Facilities Seismic Design
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Advances in Post-Tensioned Parking Facilities Seismic Design

机译：后张停车设施抗震设计的进展

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摘要

Post-tensioned concrete is a popular material used in the construction of parking facilities due to economy and durability it offers. The flooring system in post-tensioned parking facilities generally consists of one-way post-tensioned slabs supported by post-tensioned beams cast monolithic with concrete columns form moment frames. However, the building codes have restricted the use of post-tensioned concrete as primary lateral load systems in high seismic regions due to concerns about ductility, anchorage, bond, transfer lengths, grouting, characteristics of high strength prestressing steel and level of prestressing. Until recently, building codes have insisted on the ductile non-prestressed steel as the sole reinforcement and have not permitted the use of prestressing in ductile moment frames. This papersummarizes issues, advances and historical developments of code requirements concerningthe prestressed or post-tensioned frames, followed by performance of parking facilities during recent major earthquakes. Next, the paper provides an overview of the current state of seismic design process for post-tensioned parkingfacilities and its structural systems, subsystems and elements.
机译：后张拉混凝土由于其经济性和耐用性而成为停车设施建设中常用的材料。后张紧停车设施中的地板系统通常由单向后张拉板组成，这些后张拉板由整体浇铸的后张紧梁支撑，并由混凝土柱形成弯矩框架。但是，由于担心延性，锚固，粘结，传递长度，灌浆，高强度预应力钢的特性和预应力水平，建筑规范限制了在高地震区域中将后张拉混凝土用作主要的侧向荷载系统。直到最近，建筑规范仍坚持将可延展的非预应力钢作为唯一的钢筋，并且不允许在延性弯矩框架中使用预应力。本文概述了有关预应力框架或后张框架的规范要求的问题，进展和历史发展，以及在最近的大地震中停车设施的性能。接下来，本文概述了后张停车设施及其结构系统，子系统和单元的抗震设计过程的当前状态。

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