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无粘结后张曲线预应力是一种后张预应力束对其周围混凝土容许发生纵向相对滑动,不作灌浆处置的技术。在框架外侧柱施加预应力,并锚固在外柱的垫板上,将每个楼层的梁、柱组装在一起,从而使这种结构在纵向和横向,总有一个很大的预应力在经常作用。我们在国内外同类结构启示下,选择萧山鞋厂硫化车间进行试建,现将其设计、施工和检验情况介绍如下。一、工程概况萧山鞋厂硫化车间为五层框架结构(图1),建筑面积2000平方米,进深12米,开间4米,主梁跨度8米,次梁跨度6米,底层层高5米,楼层层高均为4米。现浇钢筋混凝土往承重,砖墙围护,预应力多孔楼板。楼、屋盖承重梁,先预制冷拔低
The unbonded post-tensioned curve pre-stress is a technique that allows post-tensioned pre-stressed beams to allow longitudinal relative sliding of the surrounding concrete without grouting. The prestressing force is applied to the outer column of the frame and anchored to the outer column’s backing plate. The beams and columns of each floor are assembled together so that in the longitudinal and transverse directions of the structure, there is always a large prestressing force. . Under the revelation of similar structures at home and abroad, we chose the Xiaoshan shoe factory vulcanization workshop for trial construction. Now we introduce its design, construction and inspection as follows. I. Project Overview Xiaoshan Shoes Factory vulcanization workshop is a five-story frame structure (Figure 1) with a building area of 2,000 square meters, a depth of 12 meters, an opening of 4 meters, a main beam span of 8 meters, a secondary beam span of 6 meters, and a floor height of 5 meters. The floor height is 4 meters. Cast-in-place reinforced concrete to load-bearing, brick wall enclosing, prestressed porous floor. Floor, roof load beam, first pre-cooling low