This study investigates the influence of turbulence on the aerostatic coefficients of typical bridges by obtaining force measurements via the simulation of turbulence in wind tunnels. The traditional simulation method for turbulence based on spires and grilles cannot be employed for the accurate simulation of the large integral scale of turbulence in an actual wind field. Thus, in this study, the turbulence integral length scale was effectively increased using an active control grid. The wind fields of different turbulence integral scales were generated by controlling the vibration frequency of the active control grid. The aerostatic coefficients of five typical bridge sections (single-box girder, twin-box girder, truss girder, edge girder, and edge-box girder) were measured under turbulent and uniform flow. The test results were compared and analyzed, which revealed that the drag coefficients increased in accordance with a decrease in the reduced turbulence integral length scale, and they were lower under turbulent flow than under uniform flow.

本研究通过模拟风洞中的湍流来获得力的测量值，从而研究了湍流对典型桥梁的空气静力系数的影响。传统的基于尖顶和格栅的湍流模拟方法不能用于在实际风场中精确模拟大湍流积分尺度。因此，在这项研究中，使用主动控制网格有效地增加了湍流积分长度尺度。通过控制主动控制网格的振动频率，产生了不同湍流积分尺度的风场。在湍流和均匀流动下，测量了五个典型桥梁部分（单箱梁，双箱梁，桁架梁，边梁和边箱梁）的空气静力系数。