Research Of Deformation Analysis And Deformation Control For Brick Masonry Structure Reformed Bottom-frame Structure

With the progress of the society and the change of people's demand, people hope to reform the existing brick masonry buildings to gain the big available space. It is one of effective methods for structure underpinning and transformation technology to realize this desire. it is also an important research topic at present structural engineering discipline.According to the structure feature of the brick masonry and the analysis of stress and deformation, and combining actual project, the paper propose the programs of pre-compression pile underpinning and the whole underpinning of upper main structure when the brick masonry structure are reformed bottom-frame structure, and proposed the construction method of information monitor technology in the main structure underpinning. Inner steel trellis support use the existing structure potential fully to realize main structure underpinning for the first time, and create the condition for the following frame construction, as the same time guarantee the request of the underpinning frame beam stress performance and the whole operating performance. By the actual project application result, it prove that foundation underpinning and the main structure underpinning program is feasible and reliable, Moreover, the thesis applies the method of Finite Element numerical simulation to obtain the frames'stress distribution rule and the distortion condition, which are terrified by the field examination result, it is assistant function when brick masonry structure are reformed bottom-frame structure.The above design research results has obtained the successful experience in the actual project application, and has obtained the good social efficiency and the economic efficiency, and afford reference for the structure underpinning theory and the technical further research, as well as similar project design and construction reference.