| 摘要 |
A shear connection truss construction (2) is disclosed that exhibits no bending moment or horizontal reaction when the construction is mounted on vertical support columns (26). The truss construction utilizes truss members (4) attached to each other having essentially I-shaped cross sections defined by parallel, longitudinally extended flanges, and a connecting web extending transversely between them. Each truss member defines a unitary, unsplit end (6) and a longitudinally split end, defined by an upper chord (8) located in the same directional plane as the unsplit end (6), and a lower chord (10) extending at an acute angle with respect to the upper chord (8), the lower chord (10) having associated therewith a portion of the web that is discontinuous with the web of the unsplit end. Preferably, the unsplit end (6) of the truss member (4) has a length ranging from about 15% to about 35% of the total length of the member, and the acute angle subtended between the upper (8) and lower (10) chords may range from about 5 DEG to about 15 DEG . The truss member (4) may be prepared from a unitary I-beam, or from flat component parts that are assembled to form the final member. Also, a lower flange (14) of the truss member (4) made smaller in size than the upper flange (12). The ease of construction and constructural stability of the present truss member and truss construction confers economies in fabrication and use. The present truss member and truss construction are particularly well suited for use in the construction of wide-span building structures. |
