Research of the Virtual Beam Spacing during Modeling Virtual Beams of Small Box-Girder Bridge 小箱梁桥虚拟横梁建模法中虚横梁间距选取研究
Theoretical analysis showed that the effects of HOLZ are influenced by 4 factors: i.e. thickness of the sample, wavelength of incident electron beam, the lattice planar spacing perpendicular to the incident beam and the atomic distribution along a column. 然后根据解析表达式从理论上分析了组成样品原子量,样品厚度,入射电子束波长,垂直入射束方向的点阵平面间距以及原子柱中原子的分布等因素影响高级劳埃带效应;
Combining the blooming distortion phase distribution for a Gaussian beam and a uniform irradiance circular beam, the relation between the grid spacing and Bradley-Hermann distortion number is deduce. 结合高斯光束及平台光束准直传输热畸变后的相位分布,得到了网格间距与BradleyHermann热畸变参数的关系。
Experimental Research on Behavior of Reinforced Concrete-Brick Masonry Pile Capping Beam with Large Pile Spacing 大桩距组合砖砌体承台梁受力性能的试验研究
Factors such as rigidity of longitudinal beam, column spacing of the frame, frame beam span etc. have certain influence on the space work under the vertical load in the normal structure change and concerning rules can be reflected. 纵向梁刚度、框架的柱距、框架梁的跨度等结构因素在有限制的范围内对于框架在竖向荷载作用下的空间作用有一定的影响,且具有一定的规律。
LOAD-BEARING CAPACITY OF COUPLING BEAM OF SHEAR WALL REINFORCED WITH INCLINED RHOMBIC BARS Influence of the Spacing of Diaphragn Plates on the Distortion of Cantilever Box Girder 菱形配筋剪力墙连梁的承载能力横隔板间距对悬挑箱梁畸变的影响
The research shows that the seismic behavior of the prestressed concrete beam of the appropriate spacing of stirrups and the degree of prestress is closed to that of the common reinforced concrete beams and it can be applied in the seismic area of middling intensity. 研究结果表明,预应力度PPR和箍筋间距设计合理的预应力混凝土框架梁,具有与普通钢筋混凝土框架梁相近的抗震性能,可以在中等烈度地震区工程建设中采用。
Under same loads, the mid-span deflections of lightweight concrete beam are more than the ones of normal-weight concrete beam, the mean crack spacing and maximum crack width are less than the ones of normal-weight concrete beam. 相同荷载下,轻骨料混凝土梁的跨中挠度大于普通混凝土梁,轻骨料混凝土梁的平均裂缝间距和最大裂缝宽度小于普通混凝土梁。
Compared with EB-FRP strengthened beam, the IHB-FRP strengthened beam has a better ductility, a shorter average crack spacing, and a more uniform strain distribution in the FRP strip. The shape of the strain distribution is similar to that of the bending moment. 与EB-FRP加固梁相比,IHB-FRP加固梁具有较好的延性,较小的平均裂缝间距,并且FRP应变分布更加均匀,其应变分布形状接近弯矩分布图形。
The fatigue life of strengthened beams could be extended significantly compared with the control beam. The deflections, the spacing and the number of the cracks were decreased obviously. 加固梁的疲劳寿命比未加固梁有了较大的提高,跨中挠度降低,裂缝间距和数量明显减少,受压区边缘混凝土应变和梁底受拉钢筋应变也均显著减小。