The Security Analysis And Reinforcement Research Of Ancient Brick-and-Clay City Gate Structure

The security analysis and reinforcement of ancient brick-and-clay city gate structure is a systemic work, including investigation and admeasurement, structural test, reliability appraise, research of reinforcement technology and health detection. Combined with Zhongshan-gate in Nanjing,by means of investigation and admeasurement, theoretical analysis and finite element simulation, the security analysis and reinforcement research of ancient brick-and-clay city gate structure are performed. The results would be the scientific reference to the reinforcement of brick-and-clay city gate. At the same time, the reinforcement method of barking concrete structure, another available method to renovations of brick-and-clay city gate, is put forward in this paper.Begin with the mechanical behavior of masonry-arch structure, the structural formation, destroying mechanism and reason of ancient brick-and-clay city gate are discussed in this paper. Further, by means of investigation and admeasurement, theoretical analysis and finite element simulation, the security analysis of ancient brick-and-clay city gate structure are performed. The results reveal that different settlement of base and behavior degradation of inside clay affect such structure greatly, and seismic inertial force will exasperate the damage of ancient brick-and-clay city gate. Finally, some advice and opinions are given for renovations of ancient brick-and-clay city gate. With the analysis of structural formation and damage, the appraise of structural safety and dangerous prediction of Zhongshan-gate in Nanjing, the reinforcement method of barking concrete structure is put forward and the effect of that is analysed. By displacing inside clay, reducing its weight and getting rid of adverse effect of behavior degradation of inside clay, the loads of structure reduce and the integrality and stability of that increase.