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| 1 | Site amplification effects as an explanation for the intensity anomaly in the Hanyuan Town during the Wenchuan Mw 7.9 earthquake显示文摘The Hanyuan Town is located approximately 200 km from the macro-epicenter of the great Wenchuan earthquake. However, it is within the only Intensity Ⅷ zone, surrounded by a region of Intensity Ⅵ. The objective of this study was to investigate this high-intensity anomaly with respect to the site amplifications in the Hanyuan Town. The base inputs were derived from the records at a nearby strong-motion station because no records were available from the town. The characteristics of the subsurface formations and their dynamic properties at a typical site in the town were obtained by drilling, field tests and laboratory tests. Seismic response and parametric sensitivity analyses of the site were conducted using Shake 91, and the results were compared with the provisions for rare earthquakes from the Chinese Code for Seismic Design of Buildings(GBJ11-89). The results showed that the average peak acceleration at the site during the Wenchuan earthquake is similar to the code-specified value under rare earthquakes, that the corresponding spectral accelerations for periods between approximately 0.35 and 0.75 s are significantly stronger than those specified by the code and that the average amplification factor at the site is significantly higher than the mean value of the site class. These findings indicate that the high-intensity anomaly in the town was primarily caused by site amplification effects from the unique structure of the soil strata. | Liu Hongshuai Bo Jingshan Li Ping QiWenhao Zhang Yudong | 2016 | Earthquake Engineering and Engineering Vibration2016，15，3： | 4 |
| 2 | Least square method to calibrate seismic design response spectrum显示文摘 | GUO Xiaoyun BO Jingshan LI Ping | 2012 | Advanced Materials Research2012，，2012： | 1 |
| 3 | Least square method to calibrate seismic design response spectrum 显示文摘 | Guo Xiaoyun Bo Jingshan Li Ping | 2012 | Advanced Materials Research2012，，： | 1 |
| 4 | Effects of guanidinium cations on structural,optoelectronic and photovoltaic properties of perovskites显示文摘Guanidinium(GA)cations are intentionally introduced in MAPbI_(3) perovskite by considering its potential capability of stabilizing the material through plenty of hydrogen bonds and mitigating hysteresis because of the zero dipole moment.The configurations of GA cation in film and its effects on structural,optoelectronic and photovoltaic properties of perovskite have been comprehensively studied by systematically modulating the GA ratio.It has been demonstrated that moderate GA cations can effectively passivate the defect surrounding perovskite grains,yielding an enhanced efficiency as high as~19,2%in a p-i-n type planar solar cells with the GA ratio of 15%.Further increasing the GA ratio deteriorates device performance,as extra GA cations hinder grain growth and thus reduce the grain size,which facilitates the defect generation around the enhanced interface.Moreover,a new two-dimensional(2 D)layered perovskite phase that features alternating GA and MA cations in the interlayer space(ACI)appears ultimately,while the ACI phase typically suffers from slow charge transportation across the parallel PbI2 octahedral layers separated by large A-site cations. | Yi Ding Yan Wu Ying Tian Yuzeng Xu Minna Hou Bo Zhou Jingshan Luo Guofu Hou Ying Zhao Xiaodan Zhang | 2021 | Journal of Energy Chemistry2021，30，7： | 0 |
| 5 | A Study on the Influencing Factors on Ground Motion in a Valley Site显示文摘A trapezoid valley site is chosen as a research site,and according to numerical models based on orthogonal design,the factors influencing ground motion in the valley site are studied with two-dimensional finite difference method. The influencing factors are ranked,and then the calculation results are verified by ground motion analysis. The conclusions are as follows:there are four factors that have important effects on ground motion of trapezoid valley sites,but the effects are different as the location of sites changes,the influencing factors rank differently with different site locations; The ranking of the influencing factors is the same for all the sites located within a distance of 40m from the valley's side,among them,the most effective one is the valley slope angle ranks,followed by depth-to-width ratio,overburden thickness,at last the input ground motion intensity.The impact of the factors on surface ground motion is roughly the same in the valley sites within a certain distance to the valley side,and the geometric parameters of the valley terrain play a greater part in influencing ground motion. With the increase of distance away from the valley's side,the ranking of the influencing factors also changes,the rating of slope angle moves backward,the ranking of the input ground motion and overburden thickness move ahead. The effect of valley geometric parameters on ground motions is gradually weakened,but the effect of other two influence factors are gradually increased,similar to cases of a horizontal layered site. Strong motion records in Anning River valley site were analyzed,and the results show that the valley topography has a significant amplification effect on ground motion,and that the numerical results of this paper are credible. | LI Ping BO Jingshan XIAO Ruijie ZHANG Yudong | 2019 | Earthquake Research in China2019，33，1： | 0 |
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