CAJ | 학술논문

对直径2.2 m钢护筒内填钢筋混凝土桩基与纵横向直径1.5 m空心钢管联系撑组成的码头水工结构节点，在大型通用有限元工具Abaqus二次开发和平行算法的基础上，建立考虑节点局部细化的码头三维数值模型。通过与现场测试对比验证和大量变动参数的数值分析，得到了核心钢筋混凝土桩基应力、外侧钢护筒应力、纵横联系撑应力、钢筋拉力和破坏模式等节点力学性状，并分析了最不利荷载工况组合时节点工作机理，随后针对节点的力学性状和“强节点、弱构件”的原则对节点进行了优化设计。
대직경2.2 m강호통내전강근혼응토장기여종횡향직경1.5 m공심강관련계탱조성적마두수공결구절점，재대형통용유한원공구Abaqus이차개발화평행산법적기출상，건립고필절점국부세화적마두삼유수치모형。통과여현장측시대비험증화대량변동삼수적수치분석，득도료핵심강근혼응토장기응력、외측강호통응력、종횡련계탱응력、강근랍력화파배모식등절점역학성상，병분석료최불리하재공황조합시절점공작궤리，수후침대절점적역학성상화“강절점、약구건”적원칙대절점진행료우화설계。
For the hydraulic structures of wharf node composed of the 2.2 m-diameter pile filled with reinforced concrete and the 1.5 m-diameter vertical and horizontal of ties for hollow tubes, based on secondary development and parallel algorithm of large general finite element software Abaqus, we establish a 3D numerical model of wharf considering the nodes local refinement. According to the comparison and verification of spot test and numerical analysis of large variation of parameter, we get the nodes’ mechanical behavior of the core reinforced concrete pile stress, the outer steel casing stress, the vertical and horizontal ties stress, the tensile force of reinforcing and the failure mode, and analyze the working condition of nodes of the most unfavorable load combination. According to the mechanical behavior of the nodes and the principle of“Strong Connection&Weak Components”, we optimize the design on nodes.