结构力学常用公式表---要恶补的看过来
来源:筑龙论坛
常用截面几何与力学特征表
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHBzL2ltYWdlMTA5LjM2MGRvYy5jbi9Eb3dubG9hZEltZy8yMDIxLzA4LzAxMTYvMjI3NDM0NTA4XzFfMjAyMTA4MDEwNDMwMzM5ODg=.jpg)
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHBzL2ltYWdlMTA5LjM2MGRvYy5jbi9Eb3dubG9hZEltZy8yMDIxLzA4LzAxMTYvMjI3NDM0NTA4XzJfMjAyMTA4MDEwNDMwMzQxMTM=.jpg)
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHBzL2ltYWdlMTA5LjM2MGRvYy5jbi9Eb3dubG9hZEltZy8yMDIxLzA4LzAxMTYvMjI3NDM0NTA4XzNfMjAyMTA4MDEwNDMwMzQyNjk=.jpg)
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHBzL2ltYWdlMTA5LjM2MGRvYy5jbi9Eb3dubG9hZEltZy8yMDIxLzA4LzAxMTYvMjI3NDM0NTA4XzRfMjAyMTA4MDEwNDMwMzQzNzg=.jpg)
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHBzL2ltYWdlMTA5LjM2MGRvYy5jbi9Eb3dubG9hZEltZy8yMDIxLzA4LzAxMTYvMjI3NDM0NTA4XzVfMjAyMTA4MDEwNDMwMzQ0ODg=.jpg)
单跨梁的内力及变形表
(1)简支梁的反力、剪力、弯矩、挠度
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHAvaW1hZ2UxMDkuMzYwZG9jLmNuL0Rvd25sb2FkSW1nLzIwMjEvMDgvMDExNi8yMjc0MzQ1MDhfNl8yMDIxMDgwMTA0MzAzNDU4MQ==.jpg)
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHAvaW1hZ2UxMDkuMzYwZG9jLmNuL0Rvd25sb2FkSW1nLzIwMjEvMDgvMDExNi8yMjc0MzQ1MDhfN18yMDIxMDgwMTA0MzAzNDczOA==.jpg)
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHAvaW1hZ2UxMDkuMzYwZG9jLmNuL0Rvd25sb2FkSW1nLzIwMjEvMDgvMDExNi8yMjc0MzQ1MDhfOF8yMDIxMDgwMTA0MzAzNDg3OA==.jpg)
(2)悬臂梁的反力、剪力、弯矩和挠度
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHAvaW1hZ2UxMDkuMzYwZG9jLmNuL0Rvd25sb2FkSW1nLzIwMjEvMDgvMDExNi8yMjc0MzQ1MDhfOV8yMDIxMDgwMTA0MzAzNDk4OA==.jpg)
![](http://n4.ikafan.com/assetsj/blank.gif)
(3)一端简支另一端固定梁的反力、剪力、弯矩和挠度
![](http://n4.ikafan.com/assetsj/blank.gif)
![](http://n4.ikafan.com/assetsj/blank.gif)
(4)两端固定梁的反力、剪力、弯矩和挠度
![](http://n4.ikafan.com/assetsj/blank.gif)
![](http://n4.ikafan.com/assetsj/blank.gif)
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(5)外伸梁的反力、剪力、弯矩和挠度
![](http://n4.ikafan.com/assetsj/blank.gif)
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等截面连续梁的内力及变形表
二跨等跨梁的内力和挠度系数
![](http://n4.ikafan.com/assetsj/blank.gif)
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注:1.在均布荷载作用下:M=表中系数×ql2;V=表中系数×ql;w =表中系数×ql4/(100EI)。
2.在集中荷载作用下:M=表中系数×Fl;V=表中系数×F;w =表中系数×Fl3/(100EI)。
[例1] 已知二跨等跨梁l=5m,均布荷载q=11.76kN/m,每跨各有一集中荷载F=29.4kN,求中间支座的最大弯矩和剪力。
[解] MB支=(-0.125×11.76×52)+(-0.188×29.4×5)
=(-36.75)+(-27.64)=-64.39kN·m
VB左=(-0.625×11.76×5)+(-0.688×29.4)
=(-36.75)+(-20.23)=-56.98kN
[例2] 已知三跨等跨梁l=6m,均布荷载q=11.76kN/m,求边跨最大跨中弯矩。
[解] M1=0.080×11.76×62=33.87kN·m。
不等跨连续梁的内力系数
1)二不等跨梁的内力系数
![](http://n4.ikafan.com/assetsj/blank.gif)
注:1.M=表中系数×ql21;V=表中系数×ql1;
2.(Mmax)、(Vmax)表示它为相应跨内的最大内力。
2)三不等跨梁内力系数
![](http://n4.ikafan.com/assetsj/blank.gif)
注:1.M=表中系数×ql21;V=表中系数×ql1;
2.(Mmax)、(Vmax)为荷载在最不利布置时的最大内力。
“┌┐”形刚架内力计算表 (一)
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“┌┐”形刚架内力计算表(二)
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”形刚架的内力计算表
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