用力法计算图示刚架由温度改变引起的内力。已知各杆EI=常数，截面均为矩形，截面高度h=l/10；材料线膨胀系数为α。下列选项正确的是（ ）A:
B:
C:
D:
举一反三
- <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/eeda346633f5425ab4482d83df8182a7.png" />用位移法计算图示刚架结构，下列内力计算选项正确的是（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/13d1ec532cc14b858e1edc9aedb9cc6c.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e3c8e9de91074f92bdd8a4979fea19a2.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/21189921d7064cce807070431cd018a7.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/7bbedae8f3ee4b28a7f3f40dbc38cda2.png" />
- <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/c41f262ea5014597ae40b4dfc9074dcd.png" />用位移法计算图示刚架由支座移动引起的内力。各杆<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/1f20f3ffaad94769b3e7340c77916a42.png" />。下列选项错误的是（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/f66530ad4965479096c911a53a950211.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/92126acdd09f4686a1090e5acf3b3644.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/5e3db21f3771422e8925a94bb39f5458.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/a5e7e30e19f143fe94631a9acf072c5a.png" />
- <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/b4672b87107445c0978de191fa119efd.png"/>用位移法计算图示对称结构。各杆EI=常数。下列选项错误的是（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/30d417fb469c4bed94079d25513062de.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/160eda74dac74a2fb3a403918da72123.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/fa4d77df2cbb41508f8f0874d3a0a16a.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/bf5b181844ba40c394a4a636138d90bd.png" />
- <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/9e1758fc408642e5b65ad96005c5343d.png" />用力法计算图示桁架结构，并求指定杆件的内力。已知各杆EA=常数。下列选项正确的是（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/381351aae1e343d4a83378d50dfb3f3f.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e303b05f137d4f8b8f9e731cef7dbb5e.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/604c205bceef42009d1bd9e598022a20.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e5d7282c479e40539d88dc09d897d256.png" />
- 下列关系正确的有（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/0c9a6360c85f4ff9bdb2b17b576df2e0.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/09c3ca64214040d89eaa8534fa21d895.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/3d88f37ec20c4604a8387c0e1088ad34.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/d48f61b369aa425384b1d565afb5d073.png" />