剪力环对钢管复合桩受力及变形特性的影响研究

张敏; 马建林; 柴瑞; 吴伟胜

doi:10.13204/j.gyjz201311016

剪力环对钢管复合桩受力及变形特性的影响研究

doi: 10.13204/j.gyjz201311016

1.
1. 西南交通大学土木工程学院,成都 610031;
2.
2. 港珠澳大桥管理局,广东珠海 519015;
3.
3. 中交公路规划设计有限公司,北京 100088

基金项目:

铁道部重大科技项目子课题(2008G032-F);港珠澳大桥跨海集群工程建设关键技术研究与示范项目(2011BAG07B00)

详细信息

作者简介:
张敏，女，1986年出生，博士研究生。电子信箱:zhangminswjtu@126.com

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- 文章访问数: 96
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- 被引次数: 0
出版历程
- 收稿日期: 2013-01-18
- 刊出日期: 2013-11-20

STUDY OF INFLUENCE OF SHEAR RING ON FORCE AND DEFORMATION PROPERTIES OF STEEL TUBULAR COMPOSITE PILE

1.
1. College of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China;
2.
2. Hong Kong-Zhuhai-Macao Bridge Authority,Zhuhai 519015,China;
3.
3. CCCC Highway Consultants Co. Ltd,Beijing 100088,China

摘要

摘要: 为研究压-弯-剪复杂受力状态下,剪力环对钢管复合桩受力及变形特性的影响,开展了5组室内模型试验,其中4组钢管复合桩设有剪力环,剪力环间距分别取1D、1.5D、2D和3D(D为钢管复合桩直径)四种。基于对试验结果的分析,进一步探讨剪力环间距对钢管复合桩弯曲刚度的影响。研究结果表明:剪力环能够提高钢管复合桩横向变形的能力。在剪力环间距不小于2D的条件下,钢管复合桩桩端钢管的受力及变形显著增加,使得钢管复合桩桩端截面变形呈m型分布。最后,给出剪力环对钢管复合桩弯曲刚度影响的表达式,两者呈双曲线规律变化。
- 模型试验 /
- 钢管复合桩 /
- 剪力环 /
- 受力及变形特性 /
- 弯曲刚度
Abstract: To investigate the effects of shear ring on the force and deformation characteristics of steel tubular composite( STC) piles under axial load-moment-lateral load,five specimens with different combinations of shear ring,drilling mud skin and anti-corrosion coating were tested,in which four specimens with shear ring,1D,1. 5D,2D,and 3D( D was the pile diameter) were taken as its spacing. Based on analysis of the test results,the effects of shear ring on STC pile bending stiffness were studied. The results obtained from the tests showed that the bearing capacity for lateral deformation of STC pile was greatly improved by shear ring. Also,the force and deformation of STC pile end were significantly increased,when the spacing of shear ring was more than 2D. That resulted in the strains at cross section of pile tip in the shape of m. Finally,the relation between bending stiffness increment of STC piles and shear ring spacing was formulated,both of which showed a hyperbolic law change.
- model test /
- steel tubular composite pile /
- shear ring /
- force and deformation properties /
- bending stiffness

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参考文献(14)

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