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高桩码头叉桩节点模拟抗震性能试验有限元分析

发表时间:2009-01-31  浏览量:1980  下载量:900
全部作者: 龙炳煌,李文贵
作者单位: 武汉理工大学土木工程与建筑学院
摘 要: 提出一种新型叉桩节点的抗震性能试验方案,并对这种节点进行了模拟抗震性能试验的非线性有限元分析,得到节点的滞回曲线、骨架曲线、延性系数、割线刚度及耗能能力。对桩帽的配箍率、混凝土强度等级、轴压比以及桩芯配筋率等参数对节点抗震性能的影响进行讨论,结果表明:桩帽配箍率、混凝土强度等级对叉桩节点的延性和耗能能力有较大影响,桩帽轴压比对叉桩节点的承载力、刚度、延性和耗能能力均有较大的影响,配置桩芯钢筋可以明显提高节点的延性和耗能能力,但配置一定数量的桩芯钢筋之后,提高桩芯配筋率对节点的延性和耗能能力影响不大。有关结论对这种叉桩节点的抗震性能试验研究具有重要参考价值。
关 键 词: 结构设计;高桩码头;叉桩节点;非线性;有限元分析
Title: Finite element analysis for simulated seismic behavior test of the joint with batter piles in pile-wharf
Author: LONG Binghuang, LI Wengui
Organization: School of Civil Engineering and Architecture, Wuhan University of Technology
Abstract: A test scheme on seismic behavior of a new joint with batter piles is proposed and the test is simulated under cyclic loading with nonlinear finite element analysis in the paper. Hysteretic curve, skeleton curve, ductility coefficient, secant stiffness and dissipation capacity of the joint are described. The influences of the web reinforcement ratio of pile cap, strength of concrete, axial load ratio and reinforcement ratio in the core of piles on seismic behavior of the joint are discussed too. Analytical results show that the web reinforcement ratio of pile cap and strength of concrete are important to the ductility and dissipation capacity of the joint, and axial load ratio is important to the bearing capacity, stiffness, ductility and dissipation capacity of the joint. Certain reinforcement distribution in the core of piles can improve the ductility and dissipation capacity of the joint, but by giving the requirement quantity of reinforcement, enhancing the reinforcement ratio in the core of piles has little influence on the ductility and dissipation capacity of the joint. Several conclusions have reference value for seismic test of the joint under cyclic loading.
Key words: structure design; pile-wharf; batter piles joint; nonlinear; finite element analysis
发表期数: 2009年1月第2期
引用格式: 龙炳煌,李文贵. 高桩码头叉桩节点模拟抗震性能试验有限元分析[J]. 中国科技论文在线精品论文,2009,2(2):123-133.
 
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