Method for detecting pretension of membrane material of existing membrane structure

The invention discloses a method for detecting pretension of a membrane material of an existing membrane structure. According to the detection method, the pretension force of the membrane material is locally released and recovered, the pretension force of the membrane material is detected by adopting a strain sensor, and the detection method is visual and high in precision. 一种既有膜结构膜材预拉力检测方法。它是通过局部释放和恢复膜材预拉力，采用应变传感器检测膜材预拉力，直观、精度较高的检测方法。