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Abstract Based on anti-explosion model test，the failure forms and failure mechanism of the anchor bolts are studied. According to the results of the model tests，anchor bolts under top explosion have four kinds of failure forms，which include compression bending failure，shearing failure，compression bending and tensile failure with shedding of screw cap，and turnover of backing plate. Because the pressure stress is disturbed unevenly under top explosion，which leads to product a few shearing cracks in two sides of arch foot，the four kinds of failure forms are produced. In accordance with failure forms of anchor bolts，technologies with enhancing the explosion resisting capacity of anchor bolts are proposed from the aspects of body of anchor bolts，screw cap and backing plate.
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Received: 02 June 2011
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2012, Vol. 31 
