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为了避免复杂的热处理工艺,我部在本溪钢铁公司一米七热轧钢板车间21米和30米跨预应力钢筋混凝土屋架中使用了软夹片。施工前为了验证钢绞线用JM12锚具使用软夹片的可靠性及张拉顶锚时锚具的滑移值是否满足设计要求,我们做了两个方面的实验: 1.锚固试验首先将已淬火的夹片进行退火处理,退火后的夹片硬度分别为HRC5～20之间不等,然后用这种软夹片进行试张拉(图2)。发现在
In order to avoid the complicated heat treatment process, our ministry used soft clips in the 21-meter and 30-meter span prestressed reinforced concrete truss at Benxi Iron and Steel Company’s 1-millimeter hot-rolled steel plant. Before the construction, in order to verify the reliability of the soft clips for JM12 anchors used in steel strands and whether the slippage value of the anchors when tensioning the anchors satisfies the design requirements, we have done two experiments: 1. The anchoring test will be first The quenched clips were annealed. The hardness of the annealed clips was between 5 and 20 HRC, and then the soft clips were used to pull the specimens (Figure 2). Found in