| 摘要 |
PURPOSE: A lattice girder structure and a construction method thereof are provided to improve the assemblability and production yield of a spacer. CONSTITUTION: A lattice girder structure comprises first, second, and third bars(11,12) and a spacer. The first, second, and third bars are separated from each other and are parallelly extended in a longitudinal direction. First and second retreated grooves(16,17) are formed in the top and bottom ends of the spacer. The first retreated grooves cover the surface of one of the first, second, and third bars, and the second retreated grooves cover the surface of the other bars.
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