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实用新型
CN200964645Y 大跨度大悬挑屋面斜拉式双层预应力钢网架屋盖 失效 - 权利终止 许可

大跨度大悬挑屋面斜拉式双层预应力钢网架屋盖
摘要：
本实用新型公开了一种大跨度大悬挑屋面斜拉式双层预应力钢网架屋盖，它包括双层钢网架(1)，在钢网架(1)的支座上弦节点上设置有支撑架(2)，在支撑架(2)的顶端上设置有定滑轮(3)，在钢网架(1)的中部下弦节点上设置有传力装置(5)，预应力钢索(4)的两端穿过定滑轮(3)和传力装置(5)后，分别固定在钢网架(1)的大悬挑网架的下弦节点上；本实用新型专门针对大跨度(100m≤L＜160m)并有大悬挑的双层空间网架结构的屋盖结构，其不但可大幅度提高钢网架的整体刚度，而且还可有效减少用钢量，降低工程造价。
摘要（英）：

The utility model discloses a large-span; large cantilever roof oblique-pulling double-layer pre-stressed steel space grid roof, comprising a double-layer steel network frame (1), the string nodes of the support of the steel network(1) is provided with a supporting frame(2), a fixed pulley(3) is arranged on the top of the supporting frame(2), a force transfer device (3)is arranged on the lower string node of the middle of the steel network(1), passing through the fixed pulley(3)and the force transfer device (5),the two ends of a pre-stressed tendon(4)respectively fixed to the lower string nodes of the large cantilever network frame of the steel network(1); the utility model is especially designed for large-span (100m less than or equal to L less than 160m)and large cantilever double-layer steel network frame, the utility model can not only greatly improves the integral rigidity of the steel network frame but also efficiently reduces the steel consumption and project cost.

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