| China is an ancient civilization country with a long history of five thousand years, whose glorious building culture flies its own colors in the world. As an important carrier of cultural information, the surface of the ancient building walls contains brick decorative carving art culture which is the gem of China. However, because of natural and artificial factors, there has been much damage occurred in recent years, including dilapidation and lean and even collapse. The exquisite decorations attached to the walls above may also disappear. As people respect the value and increase the awareness of ancient walls gradually, investment in ancient walls protection is increasing. In addition, the out-plane lean problem is an important factor affecting the safety of existing to the walls. For now, although the technology of walls rectification and reinforcement is relatively mature, it often causes some damage to the ancient building walls. So researches applicable to the ancient building walls rectification and reinforcement appear more urgent. Based on the principle of minimizing bad effects on the ancient building walls, the ZHANAO ancestral hall was taken as the research object. Considering its actual situation, the solution to the rectification and reinforcement of ZHANAO ancestral hall wall has been proposed, which can provide some reference for solving the similar problems. The main contents of this paper can be generalized as follows:Firstly, by consulting some literatures, some main leaning problems and reasons for leaning of the ancient building walls were analyzed; besides, the commonly used methods at home and abroad for rectification and reinforcement were also summarized.Secondly, the ZHANAO ancestral hall wall was taken as the research object, a detailed site survey was done and the main existing problems were known. A number of possible factors of the wall leaning were analyzed. The scheme for rectification and reinforcement of the ZHANAO ancestral hall wall was put forward, along with the corresponding monitoring scheme.Thirdly, Considering the wall structure of ZHANAO ancestral hall is more complex and its empty bucket rate is higher and irregular, meanwhile in order to understand the stress distribution law on the wall surface and find out the weak parts of the wall in the process of wall correction, the ABAQUS finite element software was used,which can provides the theory support for improving the scheme of rectification and monitoring.Finally, In order to verify the feasibility and operability of the scheme of rectification and find out some unpredictable problems caused by rectification operation, a1:2scale test model was made to simulate the wall correction. By means of using the optical fiber grating sensor, the wall surface stress diversification was monitored in the process of wall correction, which can also verify the rationality of ABAQUS finite element model. |
