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我局在房屋抗震加固工程中,通过实践与试验,构造柱与砖墙采用了“压浆锚杆”的联结方法,取得了良好的效果。联结大样见图1及图2。与现行通用参考图集GC02大样的试件对比,其具体做法如下: 1.水玻璃砂浆配合比: 水玻璃:水:水泥:砂等于0.01～0.06∶0.6∶1∶0.4～0.8,采用这样的配合比稠度适宜,强度可以保证。 2.压浆锚杆锚固,锚杆不宜使用圆钢,因圆钢与水玻璃砂浆握裹力较差。 3.采用16锰φ10作锚杆,通过拉拔试验,均系钢筋拉断,破坏强度在3890～4200公斤之间,如要
In our office’s seismic strengthening project, through the practice and experiment, the construction column and the brick wall used a “grouted anchor bolt” connection method, and achieved good results. The linking sample is shown in Figure 1 and Figure 2. Compared with the current common reference atlas GC02 sample, the specific practices are as follows: 1. Water glass mortar mix ratio: Water glass: Water: Cement: sand is equal to 0.01 ~ 0.06: 0.6: 1: 0.4 ~ 0.8, using this The composition ratio is appropriate and the strength can be guaranteed. 2. Grouting bolt anchorage, bolts should not use round steel, due to round bar and water glass mortar grip strength is poor. 3. Using 16 manganese φ10 as the anchor rod, through the pull-out test, all the steel bars were broken and the breaking strength was between 3,890 and 4,200 kg.