The invention provides an I type
stress intensity factor test method considering
frost heaving force periodic change. The method comprises the following steps: step 1, manufacturing a test piece, andapproximately simulating a crack of a non-through rock
mass by using a water knife kerf on the test piece; step 2, vacuumizing and saturating the test piece; step 3, sticking a
strain gauge in a non-plastic region range of the tip of the test piece; step 4, putting the test piece into a rock fracture
frost heaving test box, pressurizing air bags on the two sides of the
frost heaving test box by using a pressurizing device, closing a valve, taking down a pipeline, putting the
frost heaving test box filled with the test piece into a water tank, and enabling water to submerge the test piece; andstep 5, putting the water tank and the
frost heaving test box into which the test piece is put into a high-low temperature alternating test box together to start a freeze-thaw cycle test. According tothe method, the freezing and thawing state of the non-through fractured rock
mass can be truly simulated in the mode that water is effectively blocked when the cracks of the sample are frozen and water is supplemented in time when the cracks of the sample are thawed, so that the freezing and thawing damage result of the fractured rock
mass can be accurately represented.