挤压套管钢筋冷连接节点力学性能试验

发布时间：2018-03-23 03:12

本文选题：四面六边透水框架　切入点：冷连接　出处：《人民黄河》2017年01期 　论文类型：期刊论文

【摘要】：挤压冷连接试验是针对四面六边透水框架节点力学性能而进行的试验研究。通过万能试验机的抗拉试验对比传统的焊接抗拉强度,试验设计套管材料、千斤顶尖角角度、压痕长度、千斤顶输出压力和钢筋表面光滑程度5种因素,探索不同因素对套管挤压钢筋冷连接节点抗拉强度的影响,并找到最优组合。通过对试验数据分析得出,在无缝钢管材料、千斤顶尖角角度为43°、压痕长度为4 cm、压力为50 MPa和带肋钢筋为最优组合。
[Abstract]:The extrusion cold connection test is an experimental study aimed at the mechanical properties of the joints of the four-sided and six-sided water-permeable frame. The tensile strength of the universal testing machine is compared with that of the traditional welding tensile strength, the casing material is designed and the angle of the Jack is pointed out. Five factors, such as indentation length, Jack output pressure and surface smoothness of steel bar, are discussed. The influence of different factors on tensile strength of cold connection joint of casing extruded steel bar is explored, and the optimum combination is found. In seamless steel tube, the angle of Jack is 43 掳, the indentation length is 4 cm, the pressure is 50 MPa and the ribbed steel bar is the optimal combination.
【作者单位】：重庆交通大学水利水运工程教育部重点实验室暨国家内河航道整治工程技术研究中心;河海大学岩土力学与堤坝工程教育部重点实验室;长江重庆航道工程局;
【基金】：国家自然科学基金资助项目(51349007) 重庆市教委科学技术研究项目(KJ130412) 重庆市基础与前沿研究计划项目(cstc2013jcyj A30006)
【分类号】：TV33

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