Stress Feature of Antiknock Chamber Supported by Prestressed Anchorage
Zhang Liang-liang1;Gu Jin-cai2;Xia Yuan-you1
(a. School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China;b.The Third Research Institute of the Corps of Engineering, General Staff of CPLA, Luoyang 71023,China)
Abstract：It is of important significance for presenting reinforcement design and method of antidetonation chamber of prestressed anchorage cable that exploring antidetonation reinforcement and mechanism of the prestressed free-anchorage cable. By the means of model test and numerical simulation, the macro-variation character of strain-wave and decaying law of stress peak value in the medium of surrounding rock of under action of explosive waveform of concentrated charging prestressed free anchorage cable chamber within upright wall and circular arch is investigated. And the stress change character at end of anchorage cable and axial strain of anchorage segment effected by explosive waves of centralized charge is analyzed, The results explicit that the reasonable design parameter prestressed free anchorage cable could implement a good efficiency of antidetonation reinforcement. The results computed by explicit dynamic analysis software are similar to the data of experiment, which could prove the effectiveness and correct of parameter selecting and model building.
2010, Vol. 29 
