开封玉皇阁整体顶升保护工程中加固设计及数值分析

STRENGTHENING DESIGN AND THE CORRESPONDING NUMERICAL ANALYSIS IN THE LIFTING-UP ENGINEERING FOR THE JADE EMPEROR PAVILION OF KAIFENG

结构加固是玉皇阁整体顶升保护工程成功的关键环节。根据结构特点及有限元线弹性静力分析结果,确定加固设计主要原则为:控制穹拱的推力效应,提高墙体整体性;运用ANSYS软件对结构加固设计进行数值分析,结果表明加固措施是有效的,合理的。结构实测沉降曲线随顶距增加呈线性变化,表明加固措施显著增强了结构的整体性,保证了施工中结构的安全。

Strengthening design is a key to success in the lifting-up engineering for the Jade Emperor Pavilion of Kaifeng. According to the structure characteristics and the results of elastic static analysis by finite element method, the main principles of strengthening design are as follows: control the thrust effect of the dome and improve the wall integrity. The strengthening design was analyzed by using ANSYS software, and the results showed that the strengthening measures were effective and reasonable. The measured settlement curve varied linearly with the jacking distance, which proved that the strengthening measures could significantly improve the integrity of the structure and ensure the safety of the structure in the construction.