Correlation of dynamic characteristics of a super‐tall building from full‐scale measurements and numerical analysis with various finite element models

Abstract

SUMMARYThe Di Wang Tower located in Shenzhen has 79 storeys and is about 325 m high. Field measurements have been conducted to investigate the dynamic characteristics of the super-tall building. In parallel with the ÿeld measurements, seven ÿnite element models have been established to model the multi-outriggerbraced tall building and to analyse the e ects of various arrangements of outrigger belts and vertical bracings on the dynamic characteristics and responses of the Di Wang Tower under the design wind load and earthquake action. The distributions of shear forces in vertical structural components along the building height are also presented and discussed. The results from detailed modelling of group shear walls with several types of ÿnite elements are addressed and compared to investigate various modelling assumptions. Finally, the performance of the ÿnite element models is evaluated by correlating the natural frequencies and mode shapes from the numerical analysis with the ÿnite element models and the ÿeld measurements. The results generated from this study are expected to be of interest to professionals and researchers involved with the design of tall buildings.

Dynamic Behavior of Taipei 101 Tower: Field Measurement and Numerical Analysis

“…With the development of data acquisition techniques during the last three decades, a number of full-scale measurements of wind or seismic effects on tall buildings have been made through-out the world ͑Jeary 1986; Ohkuma et al 1991;Çelebi and Şafak 1992;Şafak and Çelebi 1992;Littler and Ellis 1992;Çelebi 1993;Tamura and Suganuma 1996;Li et al 1998Li et al , 2005Li et al , 2006Li and Wu 2004;Kijewski and Kareem 2001͒, including the measurement programs on four Chicago tall buildings currently being undertaken by Notre Dame University and the University of Western Ontario ͑Kijewski and Kareem 2001͒ and on 10 supertall buildings in Hong Kong and Mainland China by City University of Hong Kong ͑Li et al 1998, 2006Li and Wu 2004͒. However, as commented by Tamura et al ͑2005͒, the chance to conduct full-scale measurements is quite rare, and obtained data are very important and valuable.…”

Optimum Design of Outrigger and Belt Truss Systems Using Genetic Algorithm

“…As mentioned by Wu and Li [3,6], outrigger floors represent irregularities in the stiffness distribution of a tall building, and they cause the formation of weak storeys near the outrigger levels under wind or earthquake action. Zhang et al [7] studied a 50 storeys Table 3 Base moment and top drift in the structure for the four cases analyzed.…”

Development of a novel sacrificial‐energy dissipation outrigger system for tall buildings

“…Outriggers play an essential role in such a structural system, and many studies have been performed on the outriggers, such as the working mechanism and location optimization of outriggers . The dynamic characteristics of the structures equipped with outriggers were correlated from field measurement and numerical models . The seismic performances of outriggers have been experimentally studied, and the corresponding finite‐element (FE) models were validated with the experimental results .…”

“…6,7 The dynamic characteristics of the structures equipped with outriggers were correlated from field measurement and numerical models. 8,9 The seismic performances of outriggers have been experimentally studied, and the corresponding finite-element (FE) models were validated with the experimental results. [10][11][12] In addition, the damped-outrigger system has achieved significant progress recently.…”