With the rapid development of modern large-span and large-complex steel structure buildings,at present the Building Information Modeling(BIM)technology plays an important role from the design to the construction of a ...With the rapid development of modern large-span and large-complex steel structure buildings,at present the Building Information Modeling(BIM)technology plays an important role from the design to the construction of a building.This study takes the Comprehensive Gymnasium of Hubei Olympic Sports Center as the carrier and introduce the BIM technology from two aspects;The technology;and the management.Further,the optimal application of BIM technology in the complex component nodes,the technical guidance of component processing,and the correction and verification of drawings were emphatically analyzed in this paper.An engineering practice shows that the application of BIM technology has greatly improved the production efficiency,shortened the construction period,reduced unnecessary cost,and lastly laid a solid foundation for the smooth completion of the project.展开更多
The precipitation of epsilon copper at 1023 K ageing in ferrite antibacterial stainless steel was investigated by a combination of electron microscopy and micro-Vickers hardness measurement. The results show that epsi...The precipitation of epsilon copper at 1023 K ageing in ferrite antibacterial stainless steel was investigated by a combination of electron microscopy and micro-Vickers hardness measurement. The results show that epsilon copper precipitation occurs within 90 s, Complex multilayer structure confirmed as twins and stacking faults on {111}ε-Cu planes was observed in the precipitates. The precipitates grow by the lengthwise enlargement of a set of parallel layers, having [111]ε-Cu and [112]ε-Cu preferred growth orientations. The volume fraction of precipitates f formed within 120 min can be predicted by a modified Avrami equation （In1/1-f= kt ＋ b）. Simultaneously, substituent atom clusters with a size of 5-10 nm was found to occur in the solution and cause matrix strain. The precipitate morphology and distribution on the surface of ferrite antibacterial stainless steel are associated with surface crystallographic orientation of the matrix. The precipitates are predominantly located within the ferrite grains of 〈110〉 orientation. The precipitates located on {111}α-Fe surface planes have sphere or ellipse shape.展开更多
基金The Hubei provincial building technology project in 2021(Project No:43)。
文摘With the rapid development of modern large-span and large-complex steel structure buildings,at present the Building Information Modeling(BIM)technology plays an important role from the design to the construction of a building.This study takes the Comprehensive Gymnasium of Hubei Olympic Sports Center as the carrier and introduce the BIM technology from two aspects;The technology;and the management.Further,the optimal application of BIM technology in the complex component nodes,the technical guidance of component processing,and the correction and verification of drawings were emphatically analyzed in this paper.An engineering practice shows that the application of BIM technology has greatly improved the production efficiency,shortened the construction period,reduced unnecessary cost,and lastly laid a solid foundation for the smooth completion of the project.
文摘The precipitation of epsilon copper at 1023 K ageing in ferrite antibacterial stainless steel was investigated by a combination of electron microscopy and micro-Vickers hardness measurement. The results show that epsilon copper precipitation occurs within 90 s, Complex multilayer structure confirmed as twins and stacking faults on {111}ε-Cu planes was observed in the precipitates. The precipitates grow by the lengthwise enlargement of a set of parallel layers, having [111]ε-Cu and [112]ε-Cu preferred growth orientations. The volume fraction of precipitates f formed within 120 min can be predicted by a modified Avrami equation （In1/1-f= kt ＋ b）. Simultaneously, substituent atom clusters with a size of 5-10 nm was found to occur in the solution and cause matrix strain. The precipitate morphology and distribution on the surface of ferrite antibacterial stainless steel are associated with surface crystallographic orientation of the matrix. The precipitates are predominantly located within the ferrite grains of 〈110〉 orientation. The precipitates located on {111}α-Fe surface planes have sphere or ellipse shape.
