Experimental and theoretical study on wind induced responses and effective static wind load on super-high-rise buildings

Wind tunnel tests on a 1∶300 scale rigid model of the Chongqing Hotel were carried out in Boundary Layer Wind Tunnel of Hunan University to synchronously collect wind pressures.The study included two testing cases: with surrounding buildings and without surrounding buildings.Considering the 1st to 4th sway modes,these collected wind pressure data was adopted to analyze wind induced responses of the prototype building,including deflections and accelerations,and occupancy comfort validation was discussed.Using GBJ 50019—2001 method,the effective static wind loads in each orthogonal direction were studied.Results show that it is not enough to analyze wind induced responses only considering the first mode,especially for acceleration.The peak acceleration at the building top of 10-year return period is 0.144m/s2,satisfying occupancy comfort requirement.The mean wind load along cross-wind is small,however the inertial wind load along cross-wind is rather large.