【作者】 黄兴；

【导师】 叶志明；

【作者基本信息】 上海大学 ， 工程力学， 2011， 博士

【摘要】 梁柱端板连接具有施工方便、施工速度快、抗震性能好等优点,是钢结构连接的主要方式之一。钢框架分析中常假设梁柱端板连接节点是完全刚接的或理想铰接的。然而,实际工程中此类连接端板的效果是介于完全刚接和理想铰接之间的半刚性连接,而完全刚接和理想铰接并不存在。梁柱端板连接半刚性组合节点是钢框架结构中连接的传力枢纽,是影响整个钢框架结构性能的关键因素之一。梁柱端板连接半刚性组合节点中混凝土翼板与钢梁之间的组合作用大大地改善了节点的受力性能,提高了节点的初始转动刚度、抗弯承载力以及转动能力,从而保证了半刚性连接钢框架在地震中具有很高的延性与耗能能力。本文是在中国博士后科学基金(20070410174)的资助下完成的,主要研究了混凝土翼板外伸锚固和梁端连接板与柱翼缘间加设垫板的厚度对梁柱端板连接半刚性组合边节点性能的影响。具体包括以下工作:1.在进行广泛调研,并阅读大量国内外文献的基础之上,分析了近年来梁柱端板连接半刚性组合节点的研究进展。2.通过对3个梁柱端板连接半刚性组合边节点的试验测试,进行了混凝土翼板外伸锚固对梁柱端板连接半刚性组合边节点性能影响的试验研究。3.通过对4个梁柱端板连接半刚性组合边节点的试验测试,进行了梁端连接板与柱翼缘之间加设的垫板的厚度对梁柱端板连接半刚性组合边节点性能影响的试验研究。4.利用组件法和塑性分析法分析了混凝土翼板外伸锚固对梁柱端板连接半刚性组合边节点初始转动刚度、抗弯承载力以及转动能力的影响,并提出了混凝土翼板外伸锚固对梁柱端板连接半刚性组合边节点初始转动刚度、抗弯承载力以及转动能力影响的计算公式。5.利用组件法和塑性分析法分析了梁端连接板与柱翼缘间加设垫板的厚度对梁柱端板连接半刚性组合边节点初始转动刚度、抗弯承载力以及转动能力的影响,并提出了梁端连接板与柱翼缘间加设的垫板的厚度对梁柱端板连接半刚性组合边节点初始转动刚度、抗弯承载力以及转动能力影响的计算公式。6.依据混凝土翼板外伸锚固以及梁端连接板与柱翼缘间加设的垫板的厚度对梁柱端板连接半刚性组合边节点影响的试验与理论分析,给出了梁柱端板连接半刚性组合边节点弯矩-转角关系设计曲线以及梁柱端板连接半刚性组合边节点设计方法的建议。更多还原

【Abstract】 There are many advantages in Beam-Column end-plate connections, such as convenient for construction, rapid construction and seismic resistance. The Beam-Column end-plate connection is one of the main connections for the steel structures. The Beam-Column end-plate joints are assumed to be rigid and pinned in analysis of steel frame construction. However, in fact, most of the connections are semi-rigid between the entirely rigid connection and the perfect hinge. The semi-rigid composite joint with the Beam-Column end-plate connection is actuating junction in the steel frame construction and one of the critical factor for performance of the whole steel frame construction. The composite action between concrete flange slab and steel beam greatly improves mechanical property of joint in the semi-rigid composite joint with the Beam-Column end-plate connection and increases the initial stiffness, moment capacity and rotation capacity of joint. Therefore, it may assurance the ductility and the energy dissipation capacity of semi-rigid steel frame in the seismic.The dissertation, supported by the china postdoctoral science foundation (No. 20070410174) is concerned with the effect of characters of the semi-rigid composite exterior joint with the Beam-Column end-plate connection on overhang anchorage for concrete flange slab and the thickness of the plate that is inserted between the end-plate and the column flange, including as follows:1. Founded on the wide investigation and study and the lots of the references, the research advances of the semi-rigid composite joint with the Beam-Column end-plate connection are analyzed for the past few years.2. Three semi-rigid composite exterior joint with the Beam-Column end-plate connection are tested. The effect of characters of the semi-rigid composite exterior joint with the Beam-Column end-plate connection on overhang anchorage for concrete flange slab is studied.3. Four semi-rigid composite exterior joint with the Beam-Column end-plate connection are tested. The effect of characters of the semi-rigid composite exterior joint with the Beam-Column end-plate connection on the thickness of the plate that is inserted between the end-plate and the column flange is studied.4. The effect of the initial stiffness, moment capacity and rotation capacity of the semi-rigid composite exterior joint with the Beam-Column end-plate connection on the overhang anchorage for concrete flange slab is analyzed by the component method and the plastic analysis. Their computing formulas are developed.5. The effect of the initial stiffness, moment capacity and rotation capacity of the semi-rigid composite exterior joint with the Beam-Column end-plate connection on the thickness of the plate that is inserted between the end-plate and the column flange is analyzed by the component method and the plastic analysis. Their computing formulas are developed.6. According to the test and theory analysis for the effect of characters of the semi-rigid composite exterior joint with the Beam-Column end-plate connection on overhang anchorage for concrete flange slab and the thickness of the plate that is inserted between the end-plate and the column flange, the design curves are provided and the design method of moment-rotational characteristic of the semi-rigid composite exterior joint with the Beam-Column end-plate connection is recommended.更多还原