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Reliability-based assessment of flexural timber components with ultimate deflection performance
Advances in Structural Engineering ( IF 2.6 ) Pub Date : 2020-07-14 , DOI: 10.1177/1369433220940146 Pan-Pan Tian 1 , Hong-Xing Qiu 1 , Zhou-Zhou Liang 1 , Jian Sun 1
Advances in Structural Engineering ( IF 2.6 ) Pub Date : 2020-07-14 , DOI: 10.1177/1369433220940146 Pan-Pan Tian 1 , Hong-Xing Qiu 1 , Zhou-Zhou Liang 1 , Jian Sun 1
Affiliation
Assessing the deflection performance of existing flexural timber components is of paramount importance for making better, reliable, and substantiated decisions. The main purpose of this article is to propose four-level reliability index β and deflection criteria for updating existing flexural timber components (main beam, joist, purlin, and rafter) based on long-term deflection probabilistic model, limit state functions, and load combinations. The long-term deflection probabilistic model was obtained through creep deflection and short-term deflection model. Limit state functions were considered to be ultimate limit states of load-bearing capacity. In addition, four-level reliability index β were calculated by three live loads (residential live load, office live load, and snow live load) and seven load ratios ρ (0.2, 0.3, 0.5, 1.0, 2.0, 3.0, and 4.0). The results of proposed four-level criterion were illustrated with the reliable safety assessment for flexural timber components.
中文翻译:
具有极限挠度性能的弯曲木材部件的基于可靠性的评估
评估现有弯曲木材部件的挠度性能对于做出更好、可靠和有根据的决策至关重要。本文的主要目的是基于长期挠度概率模型、极限状态函数和荷载,提出更新现有弯曲木构件(主梁、托梁、檩条和椽)的四级可靠性指标β和挠度准则。组合。通过蠕变挠度和短期挠度模型得到长期挠度概率模型。极限状态函数被认为是承载能力的极限状态。此外,四级可靠度指标β由三个活荷载(住宅活荷载、办公室活荷载和雪地活荷载)和七个荷载比ρ(0.2、0.3、0.5、1.0、2.0、3.0和4)计算得出。0)。建议的四级标准的结果通过对弯曲木构件的可靠安全评估来说明。
更新日期:2020-07-14
中文翻译:
具有极限挠度性能的弯曲木材部件的基于可靠性的评估
评估现有弯曲木材部件的挠度性能对于做出更好、可靠和有根据的决策至关重要。本文的主要目的是基于长期挠度概率模型、极限状态函数和荷载,提出更新现有弯曲木构件(主梁、托梁、檩条和椽)的四级可靠性指标β和挠度准则。组合。通过蠕变挠度和短期挠度模型得到长期挠度概率模型。极限状态函数被认为是承载能力的极限状态。此外,四级可靠度指标β由三个活荷载(住宅活荷载、办公室活荷载和雪地活荷载)和七个荷载比ρ(0.2、0.3、0.5、1.0、2.0、3.0和4)计算得出。0)。建议的四级标准的结果通过对弯曲木构件的可靠安全评估来说明。