With the rapid development of society and economy, high-rise and even super high-rise building groups are constantly emerging, and effects of building group in urban site become an outstanding issue of civil engineering. In order to study the effect of super high-rise building group on site ground pulsation, the measurement of ground pulsation is conducted in Pudong area of Shanghai by using the Basalt digital acceleration recording instrumentation from Kinemetrics Inc. Field test data was analyzed by using Fast Fourier Transform and Wavelet Transform method, and the influence of high-rise building group on site ground pulsation was discussed. The results show that with respect to free field ground pulsation, the amplitude of ground pulsation in super high-rise-building group site is relatively smaller in all three directions. The high-rise-building group introduces some changes into the frequency spectrum characteristics of the ground pulsation: the frequency band of the ground pulsation in high-rise-buildings group site is wider and energy become more dispersed; the 1/3 frequency vibration level of free field site is generally larger than that of super high-rise building group site.
XI Zhao-Kai, CHEN Qing-Jun, JIANG Wen-Lei.
Effect of Super-Tall Building Group on Site Ground Pulsation[J]. Chinese Quarterly of Mechanics, 2017, 38(1): 102-107 https://doi.org/10.15959/j.cnki.0254-0053.2017.01.011