摘要
借鉴桥梁工程中的3种安装定位原则,提出了适用于建筑工程安装的第4种定位原则。对现有的几种结构非线性施工力学分析方法的特点和适用性进行了研究分析,构造了一种改进的结构非线性施工力学分析方法——局部位形约束生死单元法,抑制了传统的直接生死单元法中"死"单元的"漂移"现象,能很好地控制施工力学模拟中新生单元的安装位形,符合工程安装的实际情况,适用范围广。将这种方法应用于实际工程"法门寺合十舍利塔主塔"的施工过程力学模拟中,理论计算结果和实测结果吻合较好,表明这种改进方法是结构施工力学分析的有效方法。
Based on the three positioning principles for installation in bridge engineering,the fourth positioning principle for installation which is suitable for the construction engineering is put forward.Based on the characteristics and applicability of a few existing analysis methods of construction mechanics for structure and according to the positioning principles of components of structure in actual projects,an improved nonlinear analysis method named element birth and death of local configuration constraint is put forward to solve the problem of death element’s ’floating’ in this paper.This method was applied in the mechanical emulation and analysis of the Heshi Stupa of Famen Temple during the construction process.The computation results by the improved method agreed with the measured values well in the project.This indicates that the improved method is an effective analysis method of construction mechanics for structure.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2012年第8期101-108,共8页
Journal of Building Structures
基金
国家自然科学基金青年科学基金项目(51108369)
陕西省教育厅专项科研项目(11JK0942)
关键词
施工力学
生死单元法
局部位形约束
几何非线性
定位原则
construction mechanics
element birth and death method
local configuration constraint
geometrical nonlinearity
positioning principle
