楼板双层双向配筋 配筋面积如何计算

楼板时配置10间距为150的双层双向钢筋
2025-03-27 01:41:46
推荐回答(3个)
回答1:

很简单的,算配筋面积通长是算一米宽板带的配筋面积,所以计算过程为:(1000/150)*3.14*5*5=523,此为单层,双层再乘以2,结果为1046平方毫米。

综合考虑结构安全、刚度以及配筋经济等因素,新《混凝土结构设计规范》对现绕混凝土板板厚比作了以下规定:钢筋混凝土单向板不大于30,双向板不大于40;无梁支承的有柱帽板不大于35,无梁支承的无柱帽板不大于30。预应力板可适当增加;当板的荷载、跨度较大时宜适当减小。

楼板配筋:

(1)当楼板跨度较小时,楼板配筋受钢筋直径、最小间距制约,楼板钢筋采用HRB400钢筋不能充分发挥强度,宜采用HPB300钢筋。

(2)当楼板跨度较大或跨厚比较大时,楼板配筋主要受承载力控制,与HPB300相比,HRB400钢筋最小配筋率常数限值由0.20减小到0.15,且强度高,当釆用HRB400钢筋可比采用HPB300钢筋节约钢筋20%左右。

(3)当跨厚比较大时,楼板截面相对有效截面高度小,即钢筋抗弯力臂小,造成钢筋的浪费,且楼板挠度不易满足要求,这种情况下适当增加楼板厚度,减小跨厚比,可以明显减少配筋量。

回答2:

算配筋面积通长是算一米宽板带的配筋面积,所以计算过程为:(1000/150)*3.14*5*5=523,此为单层,双层再乘以2,结果为1046平方毫米。

楼板一种分隔承重构件。楼板层中的承重部分,它将房屋垂直方向分隔为若干层,并把人和家具等竖向荷载及楼板自重通过墙体、梁或柱传给基础。按其所用的材料可分为木楼板、砖拱楼板、钢筋混凝土楼板和钢衬板承重的楼板等几种形式。

回答3:

很简单的,算配筋面积通长是算一米宽板带的配筋面积,所以计算过程为:(1000/150)*3.14*5*5=523,此为单层,双层再乘以2,结果为1046平方毫米。

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