This paper investigates an open web truss joist (OWTJ) made of laminated </span><span><span style="font-family:Verdana;">veneer lumber (LVL) </span><i><span style="font-...This paper investigates an open web truss joist (OWTJ) made of laminated </span><span><span style="font-family:Verdana;">veneer lumber (LVL) </span><i><span style="font-family:Verdana;">Paraserianthes falctaria</span></i><span style="font-family:Verdana;"> as a prefabricated tim</span></span><span style="font-family:Verdana;">ber</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;">concrete </span><span style="font-family:Verdana;">composite floor system. The four-point bending test showed that structura</span><span style="font-family:Verdana;">l performances of the OWTJ, conventional composite floor (CCF), and prefabricated composite floor (PCF) were similar. Although composite action was not developed as no lateral deformation was observed at the shear connectors, in</span><span style="font-family:Verdana;">stalling a concrete slab above the OWTJ can slightly increase the ductility</span><span style="font-family:Verdana;"> factor of the composite floor. Furthermore, a finite element model was developed, and the model proved to be suitable for simulating the structural performance of the composite floor.展开更多
The reinforcement effect of a reconstruction scheme for a steel factory building was investigated using finite element method and dynamic performance test. The workshop concerned is a portal frame structure with four ...The reinforcement effect of a reconstruction scheme for a steel factory building was investigated using finite element method and dynamic performance test. The workshop concerned is a portal frame structure with four spans and two slope roofs, of which ten columns need cutting for expanding span. The design and reconstruction project of column-cut supported by joist were introduced, which includes column reinforcement, connection rebuilding between brackets and crane beams, and the changing of rigid joint into hinge joint. The construction scheme was put forward in the light of the characteristics of the reinforcement and reconstruction. Spot test of dynamic performance on the workshop and comparison with theoretical analysis results show that the column-cut supported by joist design is effective and the reconstruction project is successful.展开更多
文摘This paper investigates an open web truss joist (OWTJ) made of laminated </span><span><span style="font-family:Verdana;">veneer lumber (LVL) </span><i><span style="font-family:Verdana;">Paraserianthes falctaria</span></i><span style="font-family:Verdana;"> as a prefabricated tim</span></span><span style="font-family:Verdana;">ber</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;">concrete </span><span style="font-family:Verdana;">composite floor system. The four-point bending test showed that structura</span><span style="font-family:Verdana;">l performances of the OWTJ, conventional composite floor (CCF), and prefabricated composite floor (PCF) were similar. Although composite action was not developed as no lateral deformation was observed at the shear connectors, in</span><span style="font-family:Verdana;">stalling a concrete slab above the OWTJ can slightly increase the ductility</span><span style="font-family:Verdana;"> factor of the composite floor. Furthermore, a finite element model was developed, and the model proved to be suitable for simulating the structural performance of the composite floor.
基金Supported by Program for New Century Excellent Talents in University (No. NCET-06-0228)
文摘The reinforcement effect of a reconstruction scheme for a steel factory building was investigated using finite element method and dynamic performance test. The workshop concerned is a portal frame structure with four spans and two slope roofs, of which ten columns need cutting for expanding span. The design and reconstruction project of column-cut supported by joist were introduced, which includes column reinforcement, connection rebuilding between brackets and crane beams, and the changing of rigid joint into hinge joint. The construction scheme was put forward in the light of the characteristics of the reinforcement and reconstruction. Spot test of dynamic performance on the workshop and comparison with theoretical analysis results show that the column-cut supported by joist design is effective and the reconstruction project is successful.
