范俊伟, 杨璐, 班慧勇. 新型单边拧紧高强度螺栓摩擦型连接扭矩系数及抗剪性能试验研究[J]. 工程力学, 2021, 38(1): 119-128. DOI: 10.6052/j.issn.1000-4750.2020.02.0111
引用本文: 范俊伟, 杨璐, 班慧勇. 新型单边拧紧高强度螺栓摩擦型连接扭矩系数及抗剪性能试验研究[J]. 工程力学, 2021, 38(1): 119-128. DOI: 10.6052/j.issn.1000-4750.2020.02.0111
FAN Jun-wei, YANG Lu, BAN Hui-yong. EXPERIMENTAL STUDY ON TORQUE COEFFICIENT AND ON SHEAR PERFORMANCE OF A NOVEL BLIND BOLTED CONNECTION WITH HIGH-STRENGTH BOLTS[J]. Engineering Mechanics, 2021, 38(1): 119-128. DOI: 10.6052/j.issn.1000-4750.2020.02.0111
Citation: FAN Jun-wei, YANG Lu, BAN Hui-yong. EXPERIMENTAL STUDY ON TORQUE COEFFICIENT AND ON SHEAR PERFORMANCE OF A NOVEL BLIND BOLTED CONNECTION WITH HIGH-STRENGTH BOLTS[J]. Engineering Mechanics, 2021, 38(1): 119-128. DOI: 10.6052/j.issn.1000-4750.2020.02.0111

新型单边拧紧高强度螺栓摩擦型连接扭矩系数及抗剪性能试验研究

EXPERIMENTAL STUDY ON TORQUE COEFFICIENT AND ON SHEAR PERFORMANCE OF A NOVEL BLIND BOLTED CONNECTION WITH HIGH-STRENGTH BOLTS

  • 摘要: 为促进钢结构装配式建筑和可拆卸钢结构的连接技术发展,该文介绍了一种基于传统高强度螺栓的新型单边连接方式,并设计了5个摩擦型连接接头试件。通过开展抗剪试验,研究了其扭矩系数、抗滑移系数、抗剪承载力、抗剪机理等,并与《钢结构设计标准》(GB 50017—2017)的相关设计方法进行了对比分析。采用有限元软件ABAQUS建立了高强度螺栓连接接头试件的有限元模型,验证了有限元模型的准确性和适用性,并对该新型螺栓连接接头进行了参数分析。结果表明,该文提出的新型单边拧紧高强度螺栓摩擦型连接方式安装简单、易于施工和拆卸,抗剪连接破坏前螺栓预拉力损失值在15%~20%,其抗滑移系数、抗剪承载力仍可按照现行标准进行设计计算。研究成果能够为此类新型单边连接技术的工程应用提供基础。

     

    Abstract: To further develop connection techniques in prefabricated steel building structures as well as deconstructable steel structures, a novel blind bolted connection with traditional high-strength (HS) bolt is introduced herein, and five slip-critical ones are designed. Based on a shearing test, their torque coefficient, slip coefficient, shear capacity and shear mechanism are investigated, and the test results are compared with design values in accordance with standard for the design of steel structures GB 50017−2017. The finite element model for the HS bolted connection is developed with ABAQUS, and its accuracy and applicability are verified against the test results. Parametric analyses are carried out. It is indicated that this new blind bolted connection with HS bolt is favourable to installation and disassembly. During the shear loading process, the loose of pretension within the bolts is up to 15%~20%, and current national standard is generally still adequate for predicting slip coefficient and shear capacity of such bolted connections. Research outcomes obtained may provide an important basis for the utilization of such novel blind bolted connections in practice.

     

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