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简述梁的、板的支承长度确定?

问答题
2022-03-02 10:18
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正确答案

当梁的支座为砖墙或砖柱时,可是为简支梁,梁伸入砖墙、柱的支撑长年度应满足梁下砌体的局部承压强度,且梁高h<=500mm时,a>=180mm;h>500mm时,a>=240mm;当梁支承在钢筋混凝土梁柱上时,其支承长度应不小于180mm。
板:现浇板搁置在砖墙上时,其支承长度a应满足a>=h(板厚)且>=120mm,
预制板的厚度应满足以下条件:
搁置在砖墙上时,其支承长度以a>=100mm;
搁置在钢筋混凝土屋架或钢筋混凝土梁上时,a>=80mm;搁置在钢屋架或钢梁上时,一a>=60mm;
支承长度尚应满足板的受力钢筋在支座内的锚固长度,a>=5d>=50mm。


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