蓋梁抱箍法施工計算書

1、目錄1、計算依據(jù)...................................................................12、專項工程概況...............................................................13、橫梁計算..................................................................

2、.13.1荷載計算............................................................13.2力學(xué)模型............................................................23.3橫梁抗彎與撓度計算..................................................24、縱梁計算.............

3、......................................................34.1荷載計算............................................................34.2力學(xué)計算模型........................................................35、抱箍計算.........................

4、..........................................45.1荷載計算............................................................45.2抱箍所受正壓分布力Q計算............................................45.3兩抱箍片連接力P計算....................................

5、............55.4抱箍螺栓數(shù)目的確定..................................................65.5緊螺栓的扳手力PB計算...............................................65.6抱箍鋼板的厚度......................................................72施工動荷載：G5=2KNm12.

6、298m2.2m=54.1KN傾倒砼時產(chǎn)生的沖擊荷載和振搗砼時產(chǎn)生的荷載均按2KN㎡考慮。橫梁自重G6=16.884.527=1.1KN橫梁上跨中部分荷載：G7=G1G2G3G4G5G6=1416.527.69854.121.1=1651.4KN每根橫梁上所受荷載：q1=G715=1651.427=61.2KN作用在每根橫梁上的均布荷載：q2=q12.2=61.22.2=27.8KNm兩端懸臂部分只承受施工人員荷載，可以忽略不計。3.2

7、3.2力學(xué)模型力學(xué)模型q=27.8KNm1.25m2m1.25m0.1m0.1m圖2力學(xué)模型力學(xué)模型3.33.3分配梁抗彎與撓度計算分配梁抗彎與撓度計算由分析可知，橫梁跨中彎矩最大，計算如下：Mmax=q2l28q2l122=27.82.22827.80.122=16.7KNm16.7KNm0.14KNm0.14KNm圖3分配梁彎矩示意圖分配梁彎矩示意圖Q235I14工字鋼參數(shù)：彈性模量E=2.1105Mpa，截面慣性矩I=712cm4