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[Daily Question] Theoretical Basis 2020.02.01

2020-02-01View Original

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Multiple choice questions: The planar structure is as shown in the figure, and its own weight is not included. known: F=100kN, determine the number of rods with zero internal force in the BCH truss structure shown in the figure ( ). A.3 rods B.4 rods C.5 rods D.6 rods Answer: D According to the zero-rod discrimination method of planar truss structures, each three-rod nodule G, G1, E, E1, D, D1 is analyzed in sequence. It can be seen that the six rods GG1, G1E, EE1, E1D, DD1, and D1B are all zero rods. hint: Those who can explain the problem-solving process will be given extra rewards, and the answers will be visible in the replies!

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