中文摘要：

制作了一套测力系统，测定了主跨为926m的鄂东长江公路大桥在斜风下主梁的三分力系数，并把所得的结果与用传统的斜风分解法所得的结果进行了对比，发现二者不一致．这表明：基于用传统的斜风分解法得到的三分力系数进行斜风下大跨度桥梁主梁风荷载计算是不合适的，必须通过风洞试验实测斜风下主梁的三分力系数．

英文摘要：

A force-measurement system was made and used to measure the aerodynamic coefficients of the deck of E-dong Yangtze River Highway Bridge, with a main span of 926 meters, under skew winds. The results were compared with those obtained by using the traditional yaw wind-decomposition method. It was found that aerodynamic coefficients obtained by using two methods did not agree with each other. This suggests that it is not suitable to evaluate wind loads on the deck of long span bridges, based on aerodynamic coefficients obtained by using the yaw wind-decomposition method. So it is quite necessary to measure the aerodynamic coefficients of the deck through wind tunnel tests under skew winds.