【摘要】 目前关于斜交网格筒结构力学性能研究多集中于结构整体受力性能分析,忽略了局部复杂区域对结构整体受力效应的影响。基于这一背景,本文首先进行了结构分析,针对斜交网格外筒角部存的局部复杂区域,通过改变角部空间节点的模型参数建立了不同折线模型;探讨了在竖向和侧向荷载作用下该节点区域传力路径和内力分布特点;分析了复杂局部区域对结构整体以及局部相关构件内力分布的影响。依托实际斜交网格筒超高层结构,对该结构角部复杂区域建立现场应力监测系统,实测了相关构件施工过程中的应力变化,并与施工过程模拟结果进行对比分析。揭示了实测中环梁轴力以及斜柱弯矩的变化规律,补充说明了角部区域的复杂性,验证了结构局部复杂区域、相关构件的传力路径以及内力分布特点。更多还原

【Abstract】 At present,studies on the mechanical properties of diagrid tube structures mainly focus on the overall mechanical performance of structures,while the effect of complex partial regions is neglected.Based on this,the structure analysis is carried out.At the positions of complex partial regions,the different broken line models are established by changing the model parameters of corner spatial joints.The complex region’s load path and internal force distribution are analyzed under vertical load and lateral load.The effects of partial complex regions on internal force distribution of whole structure and local relevant members are studied.Finally,the advices on selecting the model parameters of this kind of joints are proposed.For the complex corner regions,the field stress testing system is established according to the real super high-rise diagrid tube structure.Furthermore,the changes of the internal force for relevant components during the construction are measured,and the measured data are compared with the results of the computer simulation.Finally,the changes of the ring beam‘s axial force and inclined column ’s moment are revealed; the complexity of the corner regions is additional remarks; the force path and the characteristic of the internal force in the complex regions and relevant components are verified.更多还原