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| FINITE ELEMENT ANALYSIS OF“64 TYPE”BEAM UNIT AND STRENGTH DESIGN OF“64 TYPE” BEAM STRUCTURE |
| DUAN Shu-jin 1，LI Shou-ying1，LIU jia-wu2 |
| 1Civil Engineering Department,Shijiazhuang Railway Institute 2 National Defence Communication Research Institute，Shijiazhuang Railway Institute |
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Abstract This paper analyses the "64 Type" beam unit as a finite clement. Its clement stiffness matrix and coordinate switch matrix arc obtained，and then the method of assembling primitive stiffness matrix of the structure is introduced. Comparing the calculation results of a simply supported beam assembled by "64 Type"beam units and that of the truss model，the theory of strength design is discussed.
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Received: 20 January 2002
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2002, Vol. 19 
