后退式超高层结构施工全过程中的非荷载效应影响研究

Jun Liu, Bohan Song, Guilong Wu, Xiaoqun Luo, Qilin Zhang, Guijing Yu
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引用次数: 0

摘要

后退式超高层结构的力学特性复杂,设计难度大。在实际分析设计过程中,应充分考虑相关影响因素。本文对超高层结构进行了精细的施工模拟分析。在混凝土构件收缩试验的基础上,对 CEB-FIP 90 收缩模型的截面形状和尺寸参数进行了修正。利用修改后的模型计算混凝土的收缩应变,并在施工模拟分析中考虑地基不均匀沉降和季节温度对结构的影响。得出了各非荷载效应对关键构件水平位移、竖向位移和内力的影响比例。细化后的施工分析结果与现场监测数据进行了对比,数据吻合度较高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on the influence of non-load effects during the whole process of construction of setback super-tall structures
The mechanical characteristics of the setback super-tall structure are complex, and the design is difficult. In the actual analysis and design process, the relevant influencing factors should be fully considered. In this paper, the fine construction simulation analysis of the super-tall structure is carried out. Based on the shrinkage test of concrete members, the CEB-FIP 90 shrinkage model is modified in terms of the parameters of cross-section shape and size. The modified model is used to calculate the shrinkage strain of concrete, and the influence of uneven settlement of foundation and seasonal temperature on the structure is considered in the construction simulation analysis. The influence proportion of each non-load effect on the horizontal displacement, vertical displacement, and internal force of key components is obtained. The refined construction analysis results are compared with the field monitoring data, and the data are in good agreement.
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