Taking steam-turbine generator foundation of 1251 MW as the example in this paper, 1:8 test model is designed. Pseudo-dynamic test is carried out under intensity 7 frequently and rarely earthquake. And earthquake response characteristics of the foundation are researched. The test result shows that the foundation has the better emergency capecity. Even if design reference period is changed into 60 years from 50 years, the foundation will satisfy the requirements of seismic design standard.

For further study on effective seismic design requirements of masonry structure, two masonry buildings were designed and constructed according to common structure style in towns and villages. Two full-scale buidings were subjected to earthquake using pseudo-dynamic test and quasi-static test. This paper presents crack propagation of masonry structure, hysteretic behavior, deformation and stiffness degradation under horizontal seismic action. In this experiment, deformability and ultimate bearing capacity of confined masonry (CM) with tie-column and ring-beam is higher than common brick structure (BM). Confined masonry (CM) wall maintain integrity due to constraint of tie-column and ring-beam. These tests verify that tie-column and ring-beam system is an effective seismic requirement to enhance seismic performance of masonry structure.

A two-story masonry housing model was made in this paper. According to Intensity 7, adjusted Northridge record was selected to be the ground motion input in the pseudo-dynamic test. Pseudo-dynamic test and pseudo-static test were carried out to investigate the seismic behavior of the model structure. The time-history curves of the acceleration, velocity, displacement and restoring force of the structural response were obtained besides the time-history curves of the measuring points of the structure. Also the steel strain of the tie-columns and the hysteresis loops of the structure were obtained. The result shows multi-story confined masonry structures possess superior seismic performance if coordinated with the provision specified in the current compulsory design code and it can continue to use after appropriate dressing under the rarely earthquake.

For further study on the influence of ground motion on the seismic performance of brick masonry structure, two masonry buildings were designed and constructed according to common structure style in towns and villages. Two full-scale buildings were subjected to different earthquake motion using pseudo-dynamic test. The earthquake motions are artificial earthquake motion and strong motion recording. This paper presents hysteretic behavior and deformation under horizontal seismic action. Crack propagation of masonry structure is analyzed. These tests verify that displacement response of masonry structures under different ground motion is pretty much the same. Tie-column and ring-beam can effectively confined brick wall. The cracks are mostly diagonal cracks caused by shear failure.

Large turbine–generator foundation can reduce the vibration in an effective way by mounting vibration isolating springs when the equipments are operating. But under strong earthquake actions, the research of seismic behavior is presently limited to theoretical calculation and there are no test results or observation data. In this paper, 1:10 spring vibration isolating foundation model is made to carry out a pseudo–dynamic seismic test. This paper also analyzes the deform distribution of column and spring of turbine–generator foundation under horizontal earthquake actions. The test results show that because of the spring of column top, deform distribution of foundation has changed; column top displacement of each column is different; spring can regulate the internal force of the column and these springs are also able to resist horizontal earthquake action when they are reducing the vibration of the equipments.