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| TESTING STUDY ON THE MECHANICAL BEHAVIOR OF PRESTRESSED CONCRETE GIRDER |
| Chen Jingxi，Han Xingzhong，Luo Xingwen |
| (Institute of Rock and Soil Mechanics，The Chinese Academy of Sciences，Wuhan 430071 China) |
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Abstract Rock-like materials have high compressive strength，but low tensile one. Testing study is made on a express highway for improving these material characteristics to meet the engineering requirement. The prestressed concrete girder is pulled，and three types of load，that is，the fixed load in the middle of the girder，well-distributed and point loads on the girder，are exerted. The working characteristics of prestressed concrete girder under the states of elasto-placticity are discussed. Experience for the design of prestressed concrete girder has been accumulated and mechanical behaviors of rock-like materials have been investigated.
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Received: 24 January 2002
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LI Botao1, 2, 3, TAN Yuxuan1, LIN Haifei4, 5*, WEI Jianping1, 2, 3, ZHANG Hongtu1, 2, 3, LI Shugang4, 5, WEI Zongyong4, 5, WANG Pei4, LUO Rongwei4, LIU Yanwei1, 2, 3. Mechanical properties and mesoscopic damage evolution of coal under liquid-nitrogen freezing at different initial temperatures[J]. , 2026, 45(6): 1757-1772. |
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2002, Vol. 21 
