文章编号：1000-4750(2021)01-0119-10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范俊伟1，杨 璐1，班慧勇2,3(1. 北京工业大学土木工程系，北京 100124；2. 清华大学土木工程系，北京 100084；3. 土木工程安全与耐久教育部重点实验室，北京 100084)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。
关键词：单边连接高强度螺栓；试验研究；扭矩系数；抗滑移系数；预拉力损失；有限元分析中图分类号：U213.5+2 文献标志码：A doi: 10.6052/j.issn.1000-4750.2020.02.0111EXPERIMENTAL STUDY ON TORQUE COEFFICIENT AND ON SHEARPERFORMANCE OF A NOVEL BLIND BOLTED CONNECTIONWITH HIGH-STRENGTH BOLTSFAN Jun-wei 1, YANG Lu 1, BAN Hui-yong2,3(1. Department of Civil Engineering, Beijing University of Technology, Beijing 100124, China;2. Department of Civil Engineering, Tsinghua University, Beijing 100084, China;3. Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Beijing 100084, China)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.Key words: high-strength blind bolt; experimental research; torque coefficient; slip coefficient; pretension loose;finite element analysis收稿日期：2020-02-25；修改日期：2020-07-11基金项目：北京市自然科学基金面上项目(8182029)第 38 卷第 1 期Vol.38 No.1工 程 力 学2021年1 月Jan.2021ENGINEERING MECHANICS119钢结构装配式建筑在结构性能、使用功能、施工效率、可持续发展等方面具有独特的优势，发展装配式建筑是我国建筑行业发展的趋势之一[1 − 2]。
