论文部分内容阅读
目前,工程中常用的楼面负筋是分离式配筋。分离式配筋钢筋锚固差,耗钢量高,但设计和施工都比较方便。当板厚超过120mm且承受的移动荷载较大时,不宜采用分离式配筋。施工过程中,对承受板的负弯矩钢筋施工时总是出现弯钩上翘、上翻现象。稍微踩踏,钢筋就会变形、扭曲、移位。在负弯矩钢筋制作时稍加改动,让其变为大跨度的马凳筋。如图1所示,以4号钢筋为例,来看制作过程。
At present, the negative reinforcements commonly used in the project are separated reinforcements. Separating reinforcements have poor anchorage and high steel consumption, but they are more convenient for design and construction. When the plate thickness exceeds 120 mm and the moving load to be subjected to is large, it is not appropriate to use separate reinforcement. During the construction process, the bending moments and upturns of the hooks always appear during the construction of the negative bending moment of the receiving plate. With a slight step, the reinforcement will deform, twist, and shift. In the production of negative bending moments, slight changes were made to make it become a large-span bar stool. As shown in Figure 1, take No. 4 rebar as an example to see the production process.