In this paper, based on maximizing the outrigger-belt truss system’s strain energy, a methodology for determining the optimum location of a flexible outrigger system is presented. Tall building structures with combined systems of framed tube, shear core, belt truss and outrigger system are modeled using continuum approach. In this approach, the framed tube system is modeled as a cantilevered beam with box cross section. The effect of outrigger and shear core systems on framed tube’s response under lateral loading is modeled by a rotational spring placed at the location of belt truss and outrigger system. Optimum location of this spring is obtained when energy absorbed by the spring is maximized. For this purpose, first derivative of the energy equation with respect to spring location as measured from base of the structure, is set to zero. Optimum location for outrigger and belt truss system is calculated for three types of lateral loadings, i.e. uniformly and triangularly distributed loads along structure’s height, and concentrated load at top of the structure. Accuracy of the proposed method is verified through numerical examples. The results show that the proposed method is reasonably accurate. In addition, for different stiffness of shear core and outrigger system, several figures are presented that can be used to determine the optimum location of belt truss and outrigger system
کلید واژگان :tall building; outrigger-belt truss system; optimum location; equivalent continuum model; strain energy
ارزش ریالی : 300000 ریال
با پرداخت الکترونیک
جزئیات مقاله
- کد شناسه : 3144730729421118
- سال انتشار : 2015
- نوع مقاله : پذیرفته شده در سایر مجلات علمی معتبر و علمی مروری و ISC
- زبان : انگلیسی
- محل پذیرش : INTERNATIONAL JOURNAL OF OPTIMIZATION IN CIVIL ENGINEERING
- برگزار کنندگان :
- ISSN :
- تاریخ ثبت : 1394/08/21 09:18:14
- ثبت کننده : رضا کامگار
- تعداد بازدید : 296
- تعداد فروش : 0