图示三铰拱结构K截面弯矩为:()https://assets.asklib.com/psource/2016071810480182865.jpg
图示悬臂刚架A支座的剪力和弯矩分别是()。(弯矩取外侧受拉为正)https://assets.asklib.com/images/image2/2018071610073542964.png
图示结构K截面弯矩值为:()https://assets.asklib.com/psource/2015102815010067350.jpg
图示结构中截面E弯矩影响线形状应为:()https://assets.asklib.com/psource/201510281434561462.jpg
图示三铰拱结构K截面弯矩为:()https://assets.asklib.com/psource/20151028150520533.jpg
图示结构K截面弯矩值为:()https://assets.asklib.com/psource/2015102815012489038.jpg
图示梁A截面弯矩影响线是()。https://assets.asklib.com/images/image2/2018072216531311477.jpg
图示两刚架的EI均为常数,已知EI a =4EI b ,则图a)刚架各截面弯矩与图b)刚架各相应截面弯矩的倍数关系为:() https://assets.asklib.com/psource/2016071809351492471.jpg
图示结构K截面弯矩值为:()https://assets.asklib.com/psource/2016071810450961887.jpg
图示两刚架的EI均为常数,已知EI a =4EI b2 ,则图a)刚架各截面弯矩为图b)刚架各相应截面弯矩的倍数关系为:() https://assets.asklib.com/psource/2015102815382556193.jpg
图示结构(杆件截面为矩形)在温度变化时,已知t 1 >t 2 。若规定内侧受拉的弯矩为正,则各杆端弯矩为:() https://assets.asklib.com/psource/2016071809303193400.jpg https://assets.asklib.com/psource/2016071809302875718.jpg
图示两刚架的EI均为常数,已知EI=4EIb,则图a)刚架各截面弯矩与图b)刚架各相应截面弯矩的倍数关系为:()https://assets.asklib.com/psource/20151104160910780.png
图示结构B截面,弯矩等于()https://assets.asklib.com/images/image2/2018072309441319490.jpg
图示结构,截面A处弯矩M A 的数值为() https://assets.asklib.com/psource/2015102816011845655.jpg
图示正方形截面等直杆,抗弯截面模量为W,在危险截面上,弯矩为M,扭矩为M 0 ,A点处有最大正应力σ和最大剪应力τ。若材料为低碳钢,则其强度条件为:() https://assets.asklib.com/psource/2016071914095286822.jpg https://assets.asklib.com/psource/2016071914095436878.jpg
图示两结构仅竖杆刚度不同,当比例常数n>1时,A、B两截面弯矩绝对值的关系为() https://assets.asklib.com/psource/2015102909222494145.jpg https://assets.asklib.com/psource/2015102909222513923.jpg
图示结构K截面弯矩值为:()https://assets.asklib.com/psource/2015110415431315764.png
悬臂梁受力如图5-7-11所示,横截面有图示四种形式,中空部分的面积A 0 都相等,其中强度最高的截面梁为:() https://assets.asklib.com/psource/2016071910493561746.jpg https://assets.asklib.com/psource/201607191049335904.jpg
图示结构,若取梁B截面弯矩为力法的基本未知量Xl,当I 2 增大时,则X 1 绝对值的变化状况是:() https://assets.asklib.com/psource/2016071809233524117.jpg
图示结构K截面弯矩值为:()https://assets.asklib.com/psource/2015110415433945215.png
绘制伸臂梁C截面、D截面的弯矩影响线和剪力影响线。https://assets.asklib.com/images/image2/2018072309222651866.jpg
图示为正方形截面等直杆,抗弯截面模量为W,在危险截面上,弯矩为M,扭矩为M n ,A点处有最大正应力σ和最大剪应力γ。若材料为低碳钢,则其强度条件为:() https://assets.asklib.com/psource/2016071915023772506.jpg https://assets.asklib.com/psource/2016071915023541853.jpg
图示结构K截面弯矩值为:()https://assets.asklib.com/psource/2016071810443853233.jpg
图示悬臂梁,固定端B的弯矩影响线在截面C的纵标(竖距)等于(弯矩以下侧受拉为正)()https://assets.asklib.com/images/image2/201704081541447142.png