图示结构杆①的轴力为()https://assets.asklib.com/psource/2014081812541685802.png
如图5-14所示,构架中AB杆的轴力为()。https://assets.asklib.com/images/image2/2017051019250448760.jpg
图示桁架结构杆①的轴力为:()https://assets.asklib.com/psource/2016071810493446922.jpg
图示桁架结构杆①的轴力为:()https://assets.asklib.com/psource/201607181048562559.jpg
图示结构杆①的轴力为:()https://assets.asklib.com/psource/201607181052288269.jpg
图示直杆受到外力作用,在横截面1-1上的轴力为N=()。https://assets.asklib.com/psource/2014110611110133317.png
图示桁架中,杆①的轴力为()https://assets.asklib.com/psource/2015102909201438369.jpg
图示结构杆①的轴力为:()https://assets.asklib.com/psource/2016071810525862368.jpg
图示结构杆①的轴力为()https://assets.asklib.com/psource/2015102817200381486.jpg
图示结构杆①的轴力为:()https://assets.asklib.com/psource/2015110415484158549.png
图示结构杆①的轴力为:()https://assets.asklib.com/psource/2016071810515553163.jpg
如图所示变截面杆中,AB段、BC段的轴力为:()https://assets.asklib.com/psource/201607191436431916.jpg
图示结构(不计轴向变形)AB杆轴力为(EI=常数):()https://assets.asklib.com/psource/2015102815452772932.jpg
图示结构中,a杆的轴力为:()https://assets.asklib.com/psource/2015102815093170242.jpg
图示桁架结构杆①的轴力为:()https://assets.asklib.com/psource/2016071810483259625.jpg
图示结构杆①的轴力为:()https://assets.asklib.com/psource/2015110415473943857.png
如图所示,轴向拉压杆件AB段的轴力为()。https://assets.asklib.com/psource/2014111318261184272.png
图示结构杆①的轴力为:()https://assets.asklib.com/psource/2015110415480748269.png
图示桁架结构杆①的轴力为:()https://assets.asklib.com/psource/2015102815061033482.jpg
图示桁架结构杆①的轴力为:()https://assets.asklib.com/psource/201511041546374219.png
图示桁架结构杆①的轴力为:()https://assets.asklib.com/psource/2015110415460767554.png
图示三铰拱,链杆AB轴力(拉力为正)为:ca1b5c20536fea44bf19702cb3951763.png
图示结构杆①的轴力为()。 A.0B.PC.-PD.1.414P
设图示三铰拱中的拉杆AB在D点装有花兰螺丝。如果拧紧螺丝,使截面D<sub>1</sub>与D<sub>2</sub>彼此靠近的距离为λ。试求C点的竖向位移Δ。