A study on the dynamic characteristics of a SRC frame bent hybrid structure for the turbine main factory building of large power plants#br#
DU Ningjun1,BAI Guoliang2,ZHAO Jinquan2,ZHAO Xingang2
1. School of Civil Engineering and Architecture, Xi’an University of Technology,Xi’an 710048, China;
2. School of Civil Engineering, Xi’an University of Architecture and Technology,Xi’an 710055, China
Abstract:A Steel reinforced concrete(SRC)framebent hybrid structure which is suitable for conventional island of nuclear power plant is a new kind of turbine main factory building structure. Compared with the traditional “threerow” main factory building of a thermal power plant,the structural layout, load magnitude,load distribution and other aspects of the main factory building of the nuclear power plant are distinctly different due to the requirements of technological process. Therefore, researches on the dynamic behavior of the turbine main factory buildings which adopt the steel reinforced concrete framebent hybrid structure can be used as the guidance to determine the load ratio of the model pseudodynamic test and to solve some engineering problems such as structure resonance,aseismic calculation, and cumulative damage. First of all, a 1 400 MW steel reinforced concrete framebent hybrid main factory building structure was taken as the prototype and the representative substructure which included deaerator bay and turbine house was chosen as the model structure. Then, the model structure was manufactured according to the 1/7 scale and dynamic characteristic parameters such as period, vibration mode, damping ratio were tested through the hammering method. Before the test, a finite element model of the test specimen was established by ABAQUS and its dynamic characteristic parameters were calculated as well. The test results demonstrate that the finite element calculation results agree well with the test results and the finite element modeling method is reasonable. Finally, finite element model of the prototype structure was established and the dynamic behaviors of the overall structure were calculated. In addition, the correctness of the scale factors between the model structure and the prototype structure was verified and the changing rule of the fundamental period and damping were analyzed. Related research results can provide basis for the application of steel reinforced concrete framebent hybrid main factory building structure.
杜宁军1,白国良2,赵金全2,赵欣刚2. 大型电厂型钢混凝土框排架混合结构汽机主厂房动力特性研究[J]. 振动与冲击, 2018, 37(12): 102-108.
DU Ningjun1,BAI Guoliang2,ZHAO Jinquan2,ZHAO Xingang2. A study on the dynamic characteristics of a SRC frame bent hybrid structure for the turbine main factory building of large power plants#br#. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(12): 102-108.
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