Prediction of Time-dependent Deformations in Post-tensioned Concrete Suspended Slabs in Tall Buildings

高层建筑后张法混凝土悬置板随时间变形的预测

• 批准号: LP0561584
• 负责人: Prof Rebecca Gravina
• 金额: $ 5.95万
• 依托单位: RMIT University
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2005
• 资助国家: 澳大利亚
• 起止时间: 2005-11-30 至 2009-08-20
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP0561584
• 关键词: Prediction; Time; dependent; Deformations; Post

The proposed project aims to develop an analytical model that can predict the time-dependent deformations in post-tensioned concrete slabs considering concrete shrinkage and creep, cracking, and bond-slip behaviour. Over the past several years, numerous cases have been reported in Australia and elsewhere, of flexural elements for which the calculated deflection is far less than the actual deflection leading to serviceability problems. The significance of this investigation hence lies in its potential to provide a solution to more accurately predict service-life deflections in post-tensioned concrete suspended slabs and validate the model with real-life deflections monitored over time on a current building project.

该项目的目的是开发一个分析模型，可以预测在后张混凝土板考虑混凝土收缩和徐变，开裂和粘结滑移行为的时间相关的变形。在过去的几年中，在澳大利亚和其他地方已经报道了许多情况下，弯曲元件的计算挠度远小于实际挠度，导致使用问题。因此，这项调查的意义在于它的潜力，提供一个解决方案，更准确地预测后张混凝土悬板的使用寿命挠度和验证模型与现实生活中的挠度监测随着时间的推移，对当前的建筑项目。