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结构设计现浇板式楼梯的配筋该如何设置？哪位网友了解？

结构设计现浇板式楼梯的配筋该如何设置？哪位网友了解？

浏览：29次 | 提问时间： 07-28 05:12

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我是游戏起码你会陪着我 07-28 05:13

1、保护层厚度详见各结构设计说明。
2、分布筋锚固长度≥5d且至少伸至梁中部。特殊楼梯如板式楼梯按相应型号的楼梯图集查构造详图。期望以上资料能帮助到你。望采纳。

腻爱 07-28 05:21

题主好，现浇楼梯制作方法：
1、混凝土标号宜采用C25或C30，现浇楼板强度等级不应大于C30，但不应小于C20，并应注明梁、板、柱的水灰比和设计坍落度要求。
2、抗温度、收缩钢筋宜采用直径细而密的方法配筋，间距不宜大于100㎜，沿纵横方向的配置率分别不宜小于0.3%。（φ10直径以上负弯矩钢筋，在覆盖区域外按间隔拉通配置温度筋）。
3、房屋下列五种部位的现浇板、屋面板内应配置抗温度收缩钢筋。①当房屋平面形体较大凹凸时，在房屋凹角处的楼板，建筑平面尽量规则，防止平面形状突变，当楼板平面形状不规则时，宜设置梁，使之形成较规则的平面。②房屋两端阳角处及山墙处的楼板；③朝南外墙设有大面积玻璃时，与南向外墙相邻的楼板；④房屋顶层及屋面现浇板；⑤与周梁、柱、墙等构件整浇且受约束较强的楼板。
4、开间3.9m（含3.9m）的楼板应配置双层向钢筋，直径不小于8㎜，间距不宜大于100㎜，内外转角处应设置大于7φ8以上的放射型钢筋，长度大于短边板宽的1/3或按双向对角长度的1/4配筋，配筋的间距不宜大于100㎜，并应满足锚固长度计算要求。
5、当楼板内需埋管线时，设计板厚不得小于110㎜。管线应该布置在结构层中性轴位置上，并应尽量防止连续穿越整块楼板。电器线路预埋管小于25㎜时，并且线管的辅设走向重合于垂直混凝土的收缩和受拉力向时，宜增设垂直于管线的短钢筋网，宽度为300㎜，按构造要求增设S钩拉接，进行加强。管线不宜立体交叉穿越，对交叉布线处宜采用线盒方法。若楼板开洞，当洞口直径或宽度不大于300㎜时，受力钢筋绕过洞边，当洞口大于300㎜时，应有洞边加设附加钢筋，附加钢筋截面面积应大于被截面积的总和，且应满足搭接长度要求。①现浇楼板设计厚度不宜小于110mm（厨房、浴室、阳台板不得小于90mm），单向板应≥L/50（L为板的短向跨度）。②应重视屋面结构的保温设计，屋面的传热度宜≤1.0W/㎡.k。③房屋长度大于40米时，可在楼面中部设置后浇带。
6、在高大建筑物施工中，为了减少施工过程中由于混凝土收缩对结构形成开裂的可能性，宜采取“抗放结合”的综合措施。对较长的工程可设置“后浇带”，（每隔30-50m设一道）。后浇带的宽度不宜少于800㎜；钢筋不截断，后浇带的混凝土强度等级宜高于两侧混凝土一个级别，且应该采用补偿混凝土浇筑，其保湿养护的时间不得少于14天。（后浇带浇筑，在设计无要求时，应在其两侧混凝土龄期6周后再进行浇筑），高层和裙房的“沉降后浇带”应满足沉降差异值后浇捣，此类“后浇带”钢筋宜采用切断搭接方法进行施工。后浇带留置宽度应大于钢筋搭接长度，且应大于800㎜。

作业君你盛宠不衰 07-28 05:29

人行道或安全带外侧的栏杆高度不应小于1.10m。栏杆构件间的最大净间距不得大于140mm,不宜采用横线条栏杆。栏杆结构设计应该安全可靠，栏杆底座应设置锚筋，其强度应满足国家规范要求。

你是疯子我是傻子 07-28 05:38

楼梯有梁式楼梯和板式楼梯,有现浇楼梯和预制楼梯.配筋方法完全不同.但大体上也是分受拉钢筋、受压钢筋和构造钢筋。分布钢筋的数量与踏板的宽度、长度有关。为防止出现温度裂缝，建议分布钢筋的间距不要超过200mm。梁式楼梯短跨受力，长向为分布筋；板式楼梯长向受力，短向为分布筋；分布筋须满足纵筋配筋面积的15%或板截面面积的0.15%；

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