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植筋粘结锚固性能的试验研究及可靠度分析

The Experiment Study on Bonded Anchor Behavior of Planted Bar and Reliability Analysis

【作者】 刘向华

【导师】 周安;

【作者基本信息】 合肥工业大学 , 结构工程, 2004, 硕士

【摘要】 本文在综合国内外化学胶植筋技术的工程实践和研究成果的基础上,对化学植筋的粘结锚固性能作了较深入的试验研究和理论分析。 文中通过32个化学胶(美亚Z3530)植筋试件的拉拔试验研究,考虑混凝土强度、锚固长度、钢筋植筋、钻孔孔径、保护层厚度、箍筋配制情况及施工质量等因素对植筋粘结性能的影响,特别是植筋的施工质量对粘结性能的影响是比较容易被忽视的因素,对化学植筋的粘结锚固机理、破坏形态、承载力及滑移性能作了比较深入的剖析。 用通过试验结果回归的平均粘结强度公式推导出承载力计算公式,选取合适的可靠指标,对植筋的锚固长度作可靠度分析,得出可用于各种情况下的具有可靠度保证的植筋锚固长度设计公式及表格。对植筋的设计、施工和验收提出建议。

【Abstract】 In this paper, on the foundation of synthesizing engineering practice and study result of planted bar technique by chemistry glue on the domestic and international, embedded experiment study and theories analysis are done about bonded anchor behavior of chemistry planted bar anchorage behaviorIn this paper, the experimental results of 32 pulling resistance test(meiya Z3530) are given , considering some factors to affect bonded anchor behavior of chemistry planted bar such as the strength of concrete anchorage lengths diameter of steel bar and holes thickness of the protecting layer confecting circumstance of the hoop bar and quantity of construction especially which is very easy to be neglected and so on, and bonded anchor mechanism failure mode load carrying capacity and slide behavior are analyzed in-depth.The calculation formulas of loading capacity are deduced by the formula of average bond strength that is concluded from experiment results. Then based on reliability analysis of anchorage length, design formula and table for anchorage length with reliability guarantee that are suitable to every kind of condition are given. And the suggestion on design construction and supervise of planted bar are brought up.

【关键词】 植筋化学胶锚固长度可靠度
【Key words】 planted barchemistry glueanchorage lengthreliability
  • 【分类号】TU746
  • 【被引频次】68
  • 【下载频次】768
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