论文部分内容阅读
近年来,苏联在不均匀沉陷的地基上建造了大量的生产性骨架建筑。在这种条件下建造的建筑物通常都采用装配式预应力结构标准设计(尺寸为3×6m和3×12m的楼板和屋面板,ι:6、12、18、24m的屋面梁和横梁,ι=18、24m的屋架,长6m、12m的墙板)。因此,必须研究在使用荷载和柱子不均匀沉陷的共同作用下的预应力钢筋混凝土结构的工作。建造在查波罗什等地Ⅱ类湿陷性地基上的骨架建筑的使用经验表明,其预应力承重结构和围护结构,在地基不均匀沉陷的作用下,在支座区产生垂直裂缝和斜裂缝,受压区的混凝土被破坏,钢筋被拉断,直到结构塌落。其主要原因是由于支座的不
In recent years, the Soviet Union has built a large number of productive skeleton buildings on the unevenly subsiding foundation. Buildings constructed under such conditions usually adopt the standard design of prefabricated prefabricated structures (3 × 6m and 3 × 12m for floors and roofs, roofing beams and crossbeams of ι: 6, 12, 18, and 24m). Truss truss with 18m and 24m, wallboards 6m long and 12m long). Therefore, it is necessary to study the work of prestressed reinforced concrete structures under the combined effect of using loads and uneven column subsidence. The experience of the use of skeletal structures built on Class II collapsible foundations in Chaporosh, etc. shows that its prestressed load-bearing structures and envelopes produce vertical cracks in the support area under the effect of uneven subsidence of foundations. Oblique cracks, the concrete in the compression zone is destroyed, and the steel bar is broken until the structure collapses. The main reason is due to the lack of support