[en] This is a summarized paper, in which some of the available results of impact effect of reinforced concrete beam and plate are gathered. Those results have been obtained by some research in recent years and can be used for relative engineer's reference

[en] In this paper the substructure method is applied. The super-structure of system is analyzed by a semi analytical curved ring shell FEM. The displacements in shell around the circumference direction are expanded in Fourier series. Based on the theory of thin shells, the computational formulas for FEM have been derived. This method has some advantages, such as simplicity of one dimensional division, high precision of results and stress field in whole structure may be shown in detail. An approximate analytical method is applied to the coupling vibration of translation and rocking of an embedded foundation. The seismic response of a containment has been obtained in time domain in a numerical example and SSI effects have been discussed. (author)

[en] The response of a nuclear containment which is a shell structure composed of a cylindrical shell and a spherical one under a chemical explosive load is presented in this paper. The shell is separated into finite ring-elements. For every element the unknown displacements are expressed with Fourier series expanded in circumferential direction of the shell and with Hermite interpolation in shell axis (meridional direction). By means of HamiIton's principle the dynamic equation of an element can be formed. The total dynamic equations are solved by Wilson - θ method. A numerical example for containment is analysed. The computational results are compared with the engineering design values under the SSE (safe shutdown earthquake) load

[en] A bottom supported main vessel of FBR is a complicated structure consisting of three cylindrical shells, two conical shells, two complicated heads, a heavy rotating plug, a core support structure and two support rings. Considering the static analogue on buckling behavior under seismic loads, the authors simplify the main vessel to a combined structure consisting of four cylindrical shells, five conical shells, two ellipsoidal shells and a plate as an analysis model. With finite element method the authors obtained a series of buckling loads and buckling modes of the combined structure under vertical loads, transverse shearing loads and transverse/vertical loads of various ratios. The effect of the reduction of Young's modulus of material Induced by high temperature on buckling behavior is examined. The influence of initial imperfection on buckling load and buckling mode is also discussed

[en] The structure of pool-type fast breeder reactor (FBR) is quite simplified in order that the calculation model may both be reflecting the structural dynamic characteristics and convenient to compute it. A simple spring-mass system could be approximatively in effect replacing a complex structure. The vessel deformation and appointed dynamic fluid pressure suppositions are taken. The motion equation of the system under horizontal seismic ground motion can be obtained by means of virtual displacement principle. Finally, the seismic response of the structure is computed

[en] The Containment, as the last shield of a reactor plays an important role in the construction for a nuclear power plant. Dynamic responses of a nuclear containment under seismic loads, aircraft crash and air shock wave have been evaluated by a lot of researchers. In this paper, a further study of the dynamic responses of containment under air shock wave in consideration with the effects of soil-structure interaction is presented

[en] A liquid metal fast breeder nuclear reactor (LMFBR) usually contains a huge volume of liquid sodium as reactor coolant. Since most reactor components are submerged in the sodium coolant, the seismic-induced fluid-structure interaction is of great importance to the design of reactor block. This paper presents the result of shaking table test of a scaled reactor block model and analysis for China experimental LMFBR. Experimental and analyzed results contain (1) beam-type vibration frequency of the reactor block; (2) sloshing frequency of the sodium coolant; (3) wave heights of non-linear sloshing under seismic action; (4) fluid pressure exerted on the structure under seismic excitation. Several conclusions are obtained. (authors)

[en] Based on the experimental physics and industrial control system (EPICS), a servo power controller is designed to be inserted into the existing power supply for testing its function of measurement and control in real time. The power supply controller uses dead time modulation (DTM) technology to adjust the output current by tracking the external control signal. Zero current switching (ZCS) can work under DTM, thus the switching loss can be reduced and the power efficiency can be greatly improved under high frequencies. In this paper, the principle of the power supply and its controller are introduced, and the DTM method is studied and verified by Matlab simulation and experiment for developing control technology of Tokamak power supplier. (authors)