The Dynamic Characteristic Test Research And Analysis Of Film Thin Shell Reinforced Concrete Structure

With the rapid development of the national civil engineering technology.The gas film reinforced concrete dome structure as a new kind of building is applied to real life.These engineering structure is the important foundation of national economic construction and people’s living facilities,the structure’s safety,durability and normal use will be the focus of attention.Therefore,the dynamic characteristics of gas film reinforced concrete dome structure study become a focus in the field of structure safety and reliability.This paper expounds the present stage gas film thin shell reinforced concrete dome structure and dynamic characteristics testing research status at home and abroad.This paper introduced the theory and the method of the modal parameter identification,adopted the environment excitation.The gas film thin shell reinforced concrete research on the dynamic characteristics of dome structures.Based on the actual project gas film thin shell reinforced concrete construction and installation company dome structure as the research object,seted the two kinds of dynamic characteristics of the system.Based on environment excitation decorate horizontal and vertical direction acceleration sensor and speed sensor,at time domain and frequency domain to evaluate the structure’s dynamic parameters.Based on finite element analysis software ANSYS to establish a three-dimensional finite element model of structure,the structure from the first to tenth order modal parameter,and the first to three order modal parameters analyzed with the test result.The research results show that the structure dynamic testing theory is suitable for the gas membrane reinforced concrete dome structure.The dynamic characteristics of two kinds of systems in the early recognition of the structure of the high precision on order vibration mode,a new structure form got good application in practical engineeringThe ANSYS finite element software in determining the building early order vibration mode has certain accuracy.Overall,the film reinforced concrete dome structure has a higher overall stiffness and good seismic performance.Finally,this paper evaluated the structure of the actual form,improved the design of gas film reinforced concrete understanding of dome structure,provides managers with the focus of the maintenance and management structure,and provide a basis for future design and construction.