Experiments On Constrained Optimization With Spencer's Method

Rayces, Juan L.; Lebich, Lan

doi:10.1117/12.7978671

Cited by 5 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, the previously measured seismic peak acceleration was 0.22 g, and the average maximum acceleration in this article, which was defined as the ratio of dividing a period into the difference value between the absolute value of the positive and negative acceleration peaks, was 0.156 g. According to the "China Earthquake Peak Acceleration Zoning Map [29]" and "Response to the Earthquake Fortification Standard for the Reconstruction after Yushu Earthquake," the seismic intensity that was approved as an area to fortify against earthquakes by the state was defined as the seismic fortification intensity, which could be generally used as the seismic basic intensity. e seismic fortification intensity of the Yushu Earthquake was 7°, and the designed earthquake acceleration was 0.15 g. e simplified Bishop method [30], the strict Janbu method [31], the Spencer method [32], and the transfer coefficient method [33] were used to calculate the dynamic stability of the landslide body. e calculation results are shown in Table 4.…”

Section: Comparison and Validation With Previous Studiesmentioning

confidence: 99%

Study on Seismic Coefficient Calculation Method of Slope Seismic Stability Analysis

Pai

Wu²,

Yang

et al. 2021

Shock and Vibration

View full text Add to dashboard Cite

In this paper, a pseudostatic seismic coefficient evaluation method for slope dynamic stability analysis was explored with Yushu Airport Road 3# landslide as a typical engineering case, and the shaking table test and numerical calculation were performed during the exploration. The loading waveform was selected as Yushu wave, and the acceleration time-history of seismic waves was measured and analyzed, revealing the failure mode of slopes. Based on the rigid-body limit equilibrium theory, the instantaneous additional seismic forces of each block and the time-history landslide stability coefficient were calculated. According to the time-history of the landslide, dynamic stability coefficients were calculated. Subsequently, we proposed a pseudostatic seismic coefficient evaluation method and discussed the seismic coefficient slope dynamic stability analysis. The results showed that as the vibration frequency rose, the average acceleration and the residual displacement of the slope decreased, but the slope grew more dynamically stable. With the proposed method, we calculated the period of slope seismic action to be 0.126 s and the average maximum acceleration to be 0.156 g, which was close to the designed ground motion acceleration of 0.15 g. Besides, we calculated the safety factor of landslides under earthquake to be 0.93∼0.97, which was close to that obtained from the building code method and in accordance with the present seismic deformation and failure mode of landslides. Moreover, the results obtained from the method of nuclear power plant specification were relatively small compared to other specification methods. The research is significant because it provides a new idea for the evaluation of seismic landslide stability in practical engineering.

show abstract

Section: Comparison and Validation With Previous Studiesmentioning

confidence: 99%