|
预制高强混凝土薄壁钢管桩的抗弯试验与数值模拟 |
Bending test and numerical simulation of precast thin-wall steel and spun concrete composite pile |
投稿时间:2016-06-30 修订日期:2016-07-08 |
DOI: |
中文关键词: TSC桩 抗弯试验 有限元模拟 非线性分析 |
英文关键词: TSC piles bending test finite element simulation nonlinear analysis |
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目) |
|
摘要点击次数: 240 |
全文下载次数: 0 |
中文摘要: |
预制高强混凝土薄壁钢管桩(TSC桩)是通过在钢管内部离心浇注混凝土而制成的管桩,其在受力和施工方面有诸多优点。为了研究该类管桩的极限抗弯承载力及其破坏机理,本文对三根直径800mm长10m的TSC桩进行了抗弯试验,并对加载过程中的变形和破坏情况进行了监测。试验结果表明,TSC桩的抗弯能力较高,并在弯矩作用下有着很好的延性。同时利用有限元分析软件,考虑了材料的非线性以及钢管对混凝土的约束强化作用,对抗弯试验进行了全过程数值模拟,计算结果与试验结果吻合良好,验证了通过数值模拟手段来计算TSC桩抗弯承载力的方法是可靠的。 |
英文摘要: |
Precast thin-wall steel and spun concrete composite pile (TSC pile) is made of centrifugal casting concrete inside the steel pipes, which has many advantages in terms of force and construction. In order to study on the ultimate flexural capacity and failure mechanism of such piles, three TSC piles, diameter of 800mm and length of 10m, were tested for flexural capacity, and monitoring the deformation and failure situation in the loading process. The test result shows that, TSC piles have high flexural capacity, and have good ductility under the bending moment. Besides, using finite element analysis software, considering the non-liner properties of materials as well as the strengthening effect of concrete by steel pipe, to simulate the bending test, and the result are in good agreement with the test, verifying the FEA method is reliable to calculate the flexural capacity of TSC piles. |
View Fulltext
查看/发表评论 下载PDF阅读器 |
关闭 |