INVESTIGATION ON WIND PRESSURE AND SHAPE FACTOR OF HIGH-RISE ANCIENT CHINESE WOODEN PAGODA VIA WIND TUNNEL TEST

High-rise Chinese wooden pagoda is an important part of the world's heritage and an architectural treasure of China. Wind disaster is one of the most common natural disasters, therefore, the wind pressures and loads of wooden pagoda under wind action should be specially focused. A wind tunnel test of the wooden pagoda in Yingxian, China is carried out. The wind pressure distribution in the wall zones and roof zones of wooden pagoda with enclosed windows and doors under the wind action is analyzed and the shape factors of wooden pagoda are calculated. On the basis of the test, the wind story forces and overturning moments are calculated and compared with the field monitoring results. The results show that the largest wind pressure coefficient occurs on the upper part of the windward side for the wooden pagoda, while the wind pressure coefficient on the leeward side is negative, which has some similarity with the wind pressure distribution in modern buildings. The wind loads calculated by the wind tunnel test have the same trend as the measurement monitor results and the errors of the base shear force and overturning moment are less than 14%. The wind pressure distribution of the wooden pagoda is studied via the wind tunnel test. This study provides a basis for the protection of the wooden pagoda and the similar high-rise ancient wooden tower architectures.