Analysis And Study On The Comfort Of Long-span Flat Slab With Opening Vibration Excitation Load

With the improvement of building and the application of high-strength lightweightmaterials, the engineering design case of long-span flat slab with opening structure isalso more and more.And the vibration that pedestrian incentive loads of the floor lead tothe comfort problem more and more prominent.At present, the study about pedestrianexcitation loads of vibration and control of floors is not perfect,the lack of systemvibration comfort design analysis and evaluation method. Therefore, the problem hasimportant practical significance to study this type of floor comfort.This article uses a structure of common FEM SAP2000. Establishment of13large-span slabs with opening space model, comparative analysis, study of shape andratio on the floor with opening with opening effect of comfort. For each of the13floorslab structure model for modal analysis, steady-state analysis and elastic-plastic timehistory analysis, extraction13floor model of dynamic data. Through used mathematicalstatistics of method on above model for contrast analysis, summary large span open holefloor of entrance shape and open hole rate respectively on floor power characteristics byproduced of effect, came: floor open hole rate on floor vibration characteristics effectfar is greater than floor open hole shape by produced of effect, floor of open hole ratefor floor Shu moderate of effect rendering first increment Hou descending of law; Dangfloor of open hole rate in0.20around Shi, floor most easy occurred resonancephenomenon. In this paper, a business center, Qingdao, large-span slabs with opening,for example, using floor analysis methods described in this article, the floor’s comfortevaluation of the project, describes the practical analysis method.This system of large-span slabs with opening comfort issues, combined withengineering example demonstrated, design of floor structure to provide a reference for this class.