The Seismic Damage And Seismic Response Analysis On Single-Story Factory Buildings With Reinforced Concrete Columns

At present, single-story factory buildings are the main structural type in various industrial areas in China. When earthquake occurs, these buildings will suffer great damage, thereby the production or part of factory buildings will be at a standstill, which further affect the national economy. Many scholars in China has paid a lot of attention to the research of single-story factory buildings and obtained some results since 1950s, but it was found in previous earthquake damage investigations that seismic behavior of single-story factory buildings needed to be enhanced. So it is necessary to study on the seismic behavior of single-story factory buildings. In this paper, single-story factory building with reinforced concrete columns is regarded as a study object, and the typical earthquake damage phenomena of this kind of building is analyzed. Then a spatial finite element analysis model and a nonlinear model are established respectively, and the analysis on the influence on seismic response of single-story buildings which brought by mobile crane and its location is studied. The results of this paper have practical significance to ensure seismic safety and reduce earthquake damage of this kind of building.The main work of this paper:1. The structural arrangement and composition of single-story factory buildings with reinforced concrete columns are briefly introduced; The reform process of seismic design for single-story factory buildings with reinforced concrete columns in China is summarized; The research about single-story factory buildings in future remain to be discussioned.2. Based on the investigation data of HaiCheng earthquake, Tangshan earthquake and WenChuan earthquake, the typical seismic damage phenomena of main four parts (roof system, concrete bent column system, supporting system and cladding sheets system) of single-story factory buildings are introduced in the paper. Furthermore, proposals to improve the seismic behavior of single-story factory building with reinforced concrete columns are provided.3. The plane finite element models is mainly used in the present researches on seismic response of single-story factory building, while, a spatial finite element analysis model and nonlinear model are established in this paper. First comparative analysis is conducted between spatial model and plane model, and advantages and disadvantages of each model are analyzed. Based on the above discussion, a spatial finite element model is established with the program soft ware SAP2000. Through free vibration characteristics analysis, the results of analysis are compared with those of both plane single mass formula and empirical formula to verify the reliability of finite element mode. The reliability of nonlinear model is also testified by analyzing an experimental model in this paper.4. The nonlinear seismic response analysis of a single-story factory buildings model using above the model and method is concluded. Especially, the research of influence brought by mobile crane on free vibration characteristics and influence brought by crane location on seismic response of single-story factory buildings with reinforced concrete columns is given more attention. The calculations agreed fairly well with the earthquake damage phenomena, and the damage mechanism is obtained and can be served as important reference for seismic design of single-story factory buildings with reinforced concrete columns.