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Showing papers by "Qiusheng Li published in 2017"


Journal ArticleDOI
TL;DR: In this article, the authors investigated the impact of Vicente to Hong Kong with emphasis on the wind fields over different terrain conditions and the wind effects on a 420m-high super-tall building.

50 citations


Journal ArticleDOI
TL;DR: In this article, a comparative analysis on the wind profile characteristics in connection with typhoon, monsoon and thunderstorm winds is presented, in which the wind profiles are constructed by synchronizing the wind measurements taken from a surface cup-anemometer and a Doppler radar profiler equipped at a coastal weather station in Hong Kong.

34 citations


Journal ArticleDOI
TL;DR: Based on a dense linear seismic array traversing the eastern margin of the Tibetan Plateau into the Qinling Belt, the authors conducted a joint inversion of receiver functions and surface wave dispersion curves under P-wave velocity constraints and simultaneously derived a crustal and uppermost mantle Vs profile with a Vp/Vs profile.
Abstract: Based on a dense linear seismic array traversing the eastern margin of the Tibetan Plateau into the Qinling Belt, we conducted a joint inversion of receiver functions and surface wave dispersion curves under P-wave velocity constraints and simultaneously derived a crustal and uppermost mantle Vs profile with a Vp/Vs profile. Our observations indicate that the Qinling Belt, of which the lower crust exhibits Vp/Vs values less than 1.8 that are indicative of an intermediate to felsic composition, is currently not serving as a channel accommodating the extrusion of mid-lower crustal materials of the Tibetan Plateau. Channelized ductile mantle flow from beneath the Tibetan Plateau through the Qinling Belt would be feasible only at sub-lithospheric depths (i.e., in the asthenosphere). Our results suggest that the extrusion of ductile mid-lower crustal materials accompanied by fault-related tectonics and isostatic buoyancy resulting from lithospheric detachment (triggered by asthenospheric flow) may have jointly engendered the plateau uplift and expansion in the Tibet-Qinling transition zone.

32 citations


Journal ArticleDOI
TL;DR: In this paper, eight L-shaped rigid models with different geometric dimensions are tested in a boundary wind tunnel to study the characteristics of the wind-induced torques acting on L-shape tall buildings.

32 citations


Journal ArticleDOI
TL;DR: In this article, the authors examined the accuracy of the numerical simulations for wind flow around a complex high-rise structure and investigated the effects of surface roughness on the wind loading.

28 citations


Journal ArticleDOI
TL;DR: In this paper, a composite laminated circular cylindrical shell under the combined action of radial harmonic excitation, compressive in-plane force and aerodynamic pressure is studied.

27 citations


Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper presented a comprehensive study of wind effects on the supertall building through wind tunnel testing and field measurement, and the wind-induced loads and pressures on the skyscraper were measured by highfrequency force balance technique and synchronous multipressure sensing system, respectively.
Abstract: Summary Ping An Finance Center with a height of 600 m and 118 storeys, located in Shenzhen, is currently the second tallest building in China. This paper presents a comprehensive study of wind effects on the supertall building through wind tunnel testing and field measurement. The wind-induced loads and pressures on the skyscraper were measured by high-frequency force balance technique and synchronous multipressure sensing system, respectively. In the wind tunnel study, a whole range of characteristic properties, including mean and r.m.s force coefficients, power spectral densities, coherences, correlations, and phase-plane trajectories, wind-induced displacement, and acceleration responses were presented and discussed. In addition, a field measurement study of the dynamic responses of Ping An Finance Center was conducted during a tropical cyclone, which aimed to verify the design assumptions and further the understanding of the dynamic properties and performance of the 600-m-high supertall building, including natural frequencies, damping ratios, and wind-induced structural responses. Then, the serviceability of the skyscraper is assessed on the basis of the experimental results and field measurements. The outcomes of this combined model test and field measurement study are expected to be useful for the wind-resistant design of future supertall buildings.

26 citations


Journal ArticleDOI
TL;DR: This article first presents the comprehensive review and linear comparison of existing structural health monitoring codes and standards, and the progress of the codification of GB 50982-2014 is imparted and its main features and specifications are summarized.
Abstract: Recently, the exclusive compulsory technical code (GB 50982-2014) for structural health monitoring of buildings and bridges in China has been developed and implemented. This code covers the majorit...

25 citations


Journal ArticleDOI
TL;DR: In this paper, the authors investigated the characteristics of surface pressures over bluff bodies in separated and reattaching flows, with emphasis placed on the effects of freestream turbulence and leading edge geometry.

22 citations


Journal ArticleDOI
Qiusheng Li1, Yinghou He1, Hui Wang1, Kang Zhou1, Bowen Yan1 
TL;DR: In this paper, a combined study of both on-site measurements and numerical analysis of the vertical deformations (axial shortenings) of the super tall building during its various construction stages is carried out.
Abstract: Summary Ping-An Finance Center (PAFC) in Shenzhen, with a structural height of 597 m and a total height of 660 m, is currently the second tallest building in the world and the tallest in China. In this paper, based on the outputs of a structural health monitoring system installed in PAFC, a combined study of both on-site measurements and numerical analysis of the vertical deformations (axial shortenings) of the super tall building during its various construction stages is carried out. It is worth noting that a novel strategy to adjust the elevation of each floor of PAFC was implemented in the design and construction of the super tall building, in which the floor-to-floor height is modestly increased to compensate for the axial shortenings of gravity load bearing elements during the construction process and in-service stage. This design strategy is referred to as elevation reservation, and its effectiveness is verified through the field measurements of the vertical deformations in this study. A good agreement is found between the numerical results and the field measurements, which validates the finite element models of PAFC at different construction stages. The finite element models are further used to investigate the time-dependent effects due to the construction sequence and the shrinkage and creep of concrete on the vertical deformations. The numerical results show that the vertical deformations would be seriously underestimated without consideration of the time-dependent effects. The outcomes of this study would be of interest and practical use for engineers and researchers involved in the structural design, construction, and structural health monitoring of super tall buildings.

17 citations



Journal ArticleDOI
TL;DR: In this paper, several micrometeorological methods are applied for estimation of z 0 based on wind measurements at Hong Kong International Airport (HKIA), and a map of terrain roughness at HKIA is established.

Journal ArticleDOI
TL;DR: The principals to design high-order method construction, series of high- order finite-difference schemes on structured grids, and discontinuous Galerkin/finite volume (DG/FV) hybrid schemes on unstructured grids are reviewed.

Journal ArticleDOI
TL;DR: Wang et al. as discussed by the authors investigated the characteristics of tropical cyclone-generated winds and evaluated the wind effects on a typical low-rise building under tropical cyclon conditions through field measurements, and found that the maximum shape factors under the oblique winds were significantly larger than those specified in the load code.
Abstract: Summary Tropical cyclone-induced disasters cause significant economic losses and heavy causalities every year. Most of the casualties were caused by low-rise buildings collapsing. This study aims to investigate the characteristics of tropical cyclone-generated winds and evaluate the wind effects on a typical low-rise building under tropical cyclone conditions through field measurements. In-situ monitoring was conducted on a full-scale low-rise building during the landfall of severe tropical storm Rumbia in 2013. Both the wind velocity field around and the surface pressures on the building were recorded during the storm. Characteristics of wind velocity field near ground during the windstorm were analyzed and compared with the specifications in the load code of China. Furthermore, when the wind approached in oblique directions, the windward roof corner suffered from the worst suctions under conical vortex. It was found that the maximum shape factors under the oblique winds were significantly larger than those specified in the load code. Moreover, probability density distributions of surface pressures induced by conical vortex were found to deviate from the Gaussian distribution. The outcomes of this study are expected to be of practical and imperative use to the wind-resistant design of low-rise buildings in tropical cyclone-prone regions. Copyright © 2016 John Wiley & Sons, Ltd.

Journal ArticleDOI
Mingfeng Huang1, Zhibin Tu1, Qiang Li1, Wenjuan Lou1, Qiusheng Li 
Abstract: Dynamic wind loads on tall buildings can be decomposed into three components, i.e. two translational components and one torsional component. When one component reaches its maximum, the other two components have low probability to take their maximum values. It is common to use combination coefficients for estimating the mean extremes of linearly combined wind loads. The traditional design practice for determining wind load combinations relies partly on some approximate combination rules and lacks a systematic and reliable method. Based on the high frequency force balance (HFFB) testing results, wind loads can be acquired in terms of time history data, which provides necessary information for the more rigorous determination of combination coefficients by probabilistic methods. In this paper, a 3D copula-based approach is proposed for determining the combination coefficients for three stochastic wind loads associated with a specific exceedance probability and a set of 3D realizable equivalent static wind loads (ESWLs) on tall buildings. Using the measured base moment and torque data by the HFFB wind tunnel test, a case study is presented to illustrate the effectiveness of the proposed framework to determine the dynamic wind load combinations and associated 3D realizable ESWLs on a full-scale 60-story building.