Abstract
采用非线性有限元仿真分析方法，研究在单侧受荷下钢锚板式钢-混组合索塔锚固体系的极限承载力。分析结果表明，单侧索力作用时的极限承载能力状态，非加载侧下横隔板与底板之间靠近侧板处混凝土发生破坏，此时，最大主压应力出现在加载侧侧板与上横隔板交界处所对应的混凝土角点处。锚固区普通钢筋最大轴向应力出现在加载侧侧板与上横隔板交界处所对应的外侧钢筋位置。随着荷载系数的增大，混凝土裂缝从加载侧向非加载侧发展，当荷载系数达到3.04时，混凝土塔柱发生破坏。 The ultimate bearing capacity of steel-concrete composite cable-pylon anchorage system with steel anchor slab under the unilateral cable force has been studied using nonlinear finite element analysis method. The analysis result showed that under unilateral load, the concrete between the bulkhead and floor in the non-load side has been broken. At this time the maximum principal compressive stress appeared in the concrete corner point of the junction between the load side plates and upper diaphragm. The maximum axial stress in reinforced anchorage area appeared in the junction between the load side plates and upper diaphragm. With the increase of load, the concrete cracks were developing from the load side to the non-load side. When the load factor reached 3.04, the concrete of tower has been destructed.
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