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  • 2022-06-17
    试作题[tex=3.643x1.357]8KP+DbqtZqlYfXNSX2F+Yg==[/tex]图[tex=0.786x0.571]XUf67bXDupEcYrjYaKc3yQ==[/tex]题[tex=3.929x1.286]qEvTtt5BzzPsCrzFe2kNgg==[/tex]图所示三铰刚架的内力图。[img=575x458]179c0d6bfc9e7bd.png[/img]
    • 解[tex=2.643x1.357]YPodtl9KRITb4twyXaBhLg==[/tex] 求支反力(题 [tex=3.5x1.357]JQfqHwKdPzAXpjy7w7cTsg==[/tex] 图)。[tex=13.071x2.0]QxBo/sqAWWTQ+ikk0Xxsoj/s6YxH1GVXxYn4vOY5QXzMRcaBlR58Km0pNiY0ygCNlxjw7GHp+nXWpPRLQ3gcAg==[/tex][tex=12.857x2.0]622lTF5V1dvF99uihIJFfndGaEpU6pqtM74RvO2BakTvLkd4R0HtDDC053tmIPyiTXvksg3w2aIV9jP5Jb1SjQ==[/tex][tex=4.214x2.0]YUTSgJiCtUqbsKfbiGUOwQ==[/tex] (考虑铰 [tex=0.714x1.0]YiLkHgl7MlxE+QjUplQUKA==[/tex] 左边部分[tex=0.429x1.357]VJTYmdtttZvFrSMSWqFgqw==[/tex],[tex=1.286x1.357]BEB68bP4vOVk/XYYizw11w==[/tex] 作 [tex=1.0x1.0]0KCelhZna0R9EGhYF1VZHA==[/tex]图 [tex=0.429x1.357]1Ism+8A9dIDx2t3GxPupUA==[/tex] 题 [tex=3.643x1.357]54ZNmnjoMsm4e3S45OVJIvek/jddSRjymHPvgbYWLdY=[/tex] 图)。根据截面法.求杆端弯矩： [tex=8.071x1.357]/8gJfAZ4p3gLgz8ep3BaI6ayEYjbLAWBQRNEtjHeb1FumLuoRnlt1PmNV0FQJDFH[/tex] 左过受拉 [tex=8.5x1.357]uVI/D789MHmSsZC2/h5/n3hCR/enoYvrOXvlU2FMXrof9czmhgbcVIUAzKyyqEdX[/tex][tex=5.571x1.214]fM9cMZPvGDj1sb8qsVsstg==[/tex]段无荷载作用,将杆端弯矩進以值线.即为此杆的弯矩图。[tex=1.5x1.0]tw6cUHXOAIDLYM0PesAPiQ==[/tex]段有荷载作用﹐将杅端弯矩连以百线后再叠加简支梁的弯矩图,即为此杆的弯矩图。[tex=1.286x1.357]H6tHfFjOZ3ZWdB4qPQ9Ocg==[/tex] 作[tex=1.214x1.286]m4ffnbQsECmaJPZCFlufYg==[/tex] 图 [tex=0.429x1.357]1Ism+8A9dIDx2t3GxPupUA==[/tex] 题 [tex=3.143x1.357]1UgAP77FG+KvSRuA74sTaaolPkYPIGzBysnfucC08r0=[/tex] 图)求杆端剪力：[tex=13.143x1.286]Q6iP+hzRVhMsFiop0mZo8PNvuNzVMep8ZTxc9NClpbnjAQPVsNRNZ1CTC23d0HRs[/tex][tex=12.5x1.286]EUIJqDuX060oDYojWvSC4Xe/BWFNchInxzYogNKHMJ0+4m2Kzi77EWFfLWA30HX+[/tex][tex=6.071x1.286]g9XnqNrjDmUaKEl7rIKFWABze3szPvJFrFTyO68xq2A=[/tex][tex=1.286x1.357]dF+j2ufB5JBOJwdIPfmkfg==[/tex] 作 [tex=1.214x1.214]ABo5CDMA37D8Vd+U3MOZ+Q==[/tex] 图 [tex=0.429x1.357]1Ism+8A9dIDx2t3GxPupUA==[/tex] 题 [tex=3.643x1.357]qj141OZAOy+kytG4oq51VngKChdRBtGyjYF/lPaQrrM=[/tex] 图)。求杆端轴力:[tex=18.071x2.929]rZM5/OPAdr7aX+kNl9iwpD7F2quCb6dy+WePil3dj1fLPhfzSAT/TjkWvQi+sl+83kjO/viBHNYOHsiSZXLNf/fknmJ/RCIoPBnAhGzmpw82xCHtRcjgbSfw6S/m6vlTzJt8zg+B0Yi2JLaitLZ3Y1/GdwdqRDZeEpoBwumdq54=[/tex]解[tex=2.5x1.357]c3XipFDzHdJyW1mjTmLErw==[/tex]求支反力(题[tex=3.071x1.357]kx4TwuOHUmOsB4HuNIhYA56PkFi4UaYNM28VBmXt5h8=[/tex] 图)。[img=597x412]179c0dc4de4437a.png[/img][tex=10.571x2.429]rnwAuTkFLInVuu7yEeI3ayE1/tVbmwGMR0wiMmIFjsMHeBBVBWQhQWuJosD75ioPoUOAQEX1tah9YvSRt2Zb3w==[/tex][tex=11.714x2.429]fG/PzknxuivnQOCNmcpsVkG0aySsWW4YPKyYiyoI6vZ8hfZeWgOeRUECpqASgxP2x8Vn7drq6JUO56/LHek41x1daWmjYGct5tjKzj4yOBk=[/tex][tex=5.571x2.0]JS+UybcvMxeA6FCNhIYCQT+YkTW6FBl3HK+kVuweZ3Q=[/tex] 取较 [tex=0.714x1.0]YiLkHgl7MlxE+QjUplQUKA==[/tex] 右边部分 [tex=7.071x2.429]oRr338KpR0maoFl0bualw02SadGJEtC2Yt8IGndJWbjob/3bN2lBBhB68V+x31Ng[/tex][tex=12.071x2.429]PQlcYstv3hMdRUJ/e6qM6BjRacjgxCCs7ByF6KnbD2PRwbIRbr3NyVi6j4TNMLTISSzfEtoivlnNfP2RWa0reQ8RidmfWcvmlexQOHghdnk=[/tex][tex=1.286x1.357]BEB68bP4vOVk/XYYizw11w==[/tex]作 [tex=1.0x1.0]0KCelhZna0R9EGhYF1VZHA==[/tex] 图 (题 [tex=3.571x1.357]zKVY9vW6Ognm1Ab5Y4XJw0N27JqWSKIWEBxBtvcg1Pw=[/tex] 图).[tex=15.857x1.286]oNcxVZ/jO7CliqQLoHX+ymEpxMy0rp3/GqkDt9xKdlKCJhlEamariV3dXzK//1S7ygyS9QjUULIq3pH6T6fjxQ==[/tex][tex=20.929x1.286]e97mwH0blRB+FxLk/hoWMNoJNTPKVaTu9Q7mHQ87r9O//v8v1cSAipFLUBu5kdB438cJN8TKuj9mHU9V1Vcmg5DXf3g9L3Ptqc1MH8fU4M0=[/tex][br][/br][tex=8.071x1.286]cMnrzfHsdg96FFdCP9vwkad9UMciuh+ritwSQ7mWOQ8=[/tex] 段无荷载作用, 将杆端弯矩连以直线，即为此杆的弯矩图。[tex=1.286x1.357]H6tHfFjOZ3ZWdB4qPQ9Ocg==[/tex] 作 [tex=1.214x1.286]PVAgoTUWPP6SQolUi4hNEw==[/tex] 图(题 [tex=3.571x1.357]vXZJqREFGUZBITPdrHyujBZmcNDRgx0CbggcEVE9mAw=[/tex] 图) .求杆端剪力：[tex=20.5x2.429]lkr1YxqBAjFwrlvaimxqzd+akYlu7XebbxYPYbGP6Ml4YLLkQgi1zDpcOil18c2z6Ho9z8F2uiWeQDkYGPinVbABIqRQ1lnOot5HygF//MDaOUYdAikEyOTzEn9W3/PqMOJTAghp1CbqttPJH02LUd11f9/VwWD0ekKquDyFY60=[/tex]( 1 ) 作 $F_{N}$ 腺(题 $3-8\left( b _{4}\right)$ 图)求杆端轴力：[tex=18.0x2.429]n1It3MK5w9srLMT/8lhr0IdUaH2/LRABvQVDl7LMoDh2doVHhY1OXV/pCJm5nCiuXic3oSQGhjhkJO+10GYj/tonlG3faOgvl/57spfcXYA+AXPBLhyQGyyFxtd2yHcZIGalEW2Y910Q/5ZrhME1Lw==[/tex]解[tex=2.5x1.357]LrhgZUHfLRMCJEHuMUW9bg==[/tex] 求支反力(题 [tex=2.857x1.357]0s8dZw48XGNChW3EYj/jpg==[/tex]图)。[tex=5.786x2.0]JS+UybcvMxeA6FCNhIYCQfpSFLffNzU3TwDYdFY8wJfNzm9QTegd4kLyJ0hc3cLY[/tex] 取铰 [tex=0.714x1.0]YiLkHgl7MlxE+QjUplQUKA==[/tex] 右边部分[tex=5.714x1.357]B9REtMzCXL4A+R8wWCEE0ifInuohbCP3OY+Hb6ltzJ0=[/tex][tex=18.786x2.0]QxBo/sqAWWTQ+ikk0Xxsogf/yZrI5WNXesl5aKvX9+AHdlPvPRvheT4WkwHVPylu5hbBqeNhe0j14xUP1l9OtmH2o6e1Gq4lmC+XHrvt034=[/tex][tex=14.643x2.357]Q/N22/u3lFaN+eS+dQSuOrRH3I8ROU5Bs5FjHQE1XlNoGVqM8W7AYZaKYMw5rVZNeJR31P5dfEaPdtw6wHGB3b/WzE7HUy5Gs1cE6pSRfEpiU6utLMgSB/9Komweat7L[/tex][tex=11.786x2.357]fG/PzknxuivnQOCNmcpsVkG0aySsWW4YPKyYiyoI6vaam0IF9A/F5BGSaGZkJ6dMISpbZxAZsI9bCCpQsJgx76UW1i7JmdU7LqZpcWJ2KSg=[/tex][tex=12.714x2.357]PQlcYstv3hMdRUJ/e6qM6FKBvDBq0Skyc6ueSmadaE48dd3qX5Zac7TiWebuz3mghobysJ1gjo20/1uz+YJ53gew1b+9y/o1vupq7A0Sloo=[/tex][tex=1.286x1.357]BEB68bP4vOVk/XYYizw11w==[/tex]作 [tex=1.0x1.0]0KCelhZna0R9EGhYF1VZHA==[/tex] 图 (题 [tex=3.571x1.357]eVRf07J8+CjHZ05WycIilAmq0UGL2T0RMbAyApPIDpI=[/tex] 图)求杆端弯矩;[img=552x548]179c0ee51512a8e.png[/img][tex=10.357x2.357]33/vnk3XN2u2TUYn2Z3t/Ks/r/caY1ZKmCxoqbG/58MAjY5oGuwOeHJXRBIlm5uuo5mmPYPF5skyJm56raZ2TQ==[/tex] (右过受拉)[tex=12.071x2.357]Xmgzy63yXnwEEBVSqX74eA1G5xia27ScU5VydFV53jfCU1guyOe2ejzI73xtTqIqkcfB2eNnqTF3wJIBJBejue+2pfZ1H7EbrPoBcfFpVhI=[/tex][tex=5.286x2.357]luAWKtYQwM44R5Kus0S7OCTBCp/LWPWLVv4f0ZZ7FxQ=[/tex](右过受拉)，[tex=2.786x1.214]0M2DW3TFq1BTmxZxkbq5Qw==[/tex][tex=6.643x1.286]vixX29bAmd/Wd2NafiaYjPW/WBg8fKfOOZZc+RKyn10=[/tex]段无荷载作用,将栋端弯矩连以直线郎为此杆的弯矩图。[tex=1.643x1.0]nkJNX0fwYXf4XpNUec2sTw==[/tex]段有荷载作用,将杆端弯矩连以直线再叠加简支梁的弯矩图,即并此栋的弯矩图。[tex=1.286x1.357]H6tHfFjOZ3ZWdB4qPQ9Ocg==[/tex] 作[tex=1.214x1.286]m4ffnbQsECmaJPZCFlufYg==[/tex] 图(题 [tex=3.571x1.357]UdTtzRYNvBDIOIHR5gmPVZEOIKd12cvSobWfsxOpgJI=[/tex] 图)。求杆端轴力：[tex=18.857x2.357]L6GDg5mSzFfno92PPJ+bec1ncvw+aAEF28DeVEKwE1fDQq0VPAncnKomGmJfIqi7B1QR4U9xDXz3gokL0C8Nm6u/2VPL/zIV9DITYuevNNiYxte50TJYF0UvvPZg74HyGU65XNeZ0VRJV8LqBCSFAw==[/tex][tex=12.0x2.357]rTXT8cyGyycA1hPoL+vwsBvJFPOQ3wNLWPbotaKWIeJqGIRYU4rorQqG5DMLdZUECgKzqIK7CEzQUMBdNhRZw9Iwa0MOg9EakmqmCTHP+gA=[/tex][tex=1.286x1.357]dF+j2ufB5JBOJwdIPfmkfg==[/tex] 作 [tex=1.214x1.214]3MYBNj7JBGPDkjRT37v1Nw==[/tex] 图 (题 [tex=3.571x1.357]fYxAgHBilVTVFo1daPYmJZwYnD2rJNqFw2iMw7C/hEA=[/tex]图）.求杆端轴力：[tex=19.643x2.357]dJwFl48wXXhyilxZBmbEB21qejSsib6bjaYFKga81n3x1S1jo1iDUXTnLlmB9nUeWpkMTs513KWNDt+pksxYzzII9O1tEKqczCr5OASmF+ShSA1VF+V/kHIAfFO4ZpeRfjUeQxwEq2v43GbLI3eXmw==[/tex]解[tex=1.357x1.357]YP0FHP8gDdcjJmICkuaGEg==[/tex]本题特点:三铰刚架;对称结构;作用有对称荷载.[tex=1.286x1.357]VAHhaW1te0xvoqDVN54/dg==[/tex] 求支反寸 [tex=0.429x1.357]1Ism+8A9dIDx2t3GxPupUA==[/tex]题 [tex=3.643x1.357]icP2FL4RcOST7UGoX3nEjLrX3jy7mRrVnU7DFmP9+Ew=[/tex] 图)。[tex=13.143x4.357]rZM5/OPAdr7aX+kNl9iwpC0cskY4GJv1ZLrvQsLfX6hGZNbgnnYndoZV4tCyDuAHAjNiaFY68E4P/3v7vynci0zz9lOOZqu0VGSelblu+sj9VSU8k6nSneZpMkSj7I1yBhmuLzPAW9D1eqZJMo3kacSb3p/EJBljw6AlrBseLncrz2vwEEwOzU5PeGYp2eZz[/tex][tex=5.214x2.0]JS+UybcvMxeA6FCNhIYCQRwBqNrZW2ocqTHNE4k+wAk=[/tex] (取铰 [tex=0.714x1.0]YiLkHgl7MlxE+QjUplQUKA==[/tex]右进部分), [tex=8.571x1.357]/LUTELRVfNZwVy+Ygthw0xS2vs9XstLE/zZDe+0cnOkIFNh8znEQWvy5dyA1i2PB[/tex][tex=13.857x2.0]mNrwA930VFomjSAO9EOce4K2xvpyMjHDuHqP864bVdgipvsrsLqFoY9KTBn4kBLWQL5N2U/KDCaKWC6BodFjt4eZfZm01nQ+uhb3+4LNpD4=[/tex][tex=1.286x1.357]BEB68bP4vOVk/XYYizw11w==[/tex] 作[tex=1.0x1.0]0KCelhZna0R9EGhYF1VZHA==[/tex] 图 (题[tex=3.643x1.357]ToECd81mxQjLvX/uuiDt8SKwdYClcZysioN1azBrgeI=[/tex] 图) 求杆端弯矩:[img=547x449]179c0f43f286c04.png[/img][tex=12.786x1.214]33/vnk3XN2u2TUYn2Z3t/AZ1S/DHuMS+U9+sqmZmxsuu4y8dt6uO+q2QWzmFdPNRuSoZ2y/oORTPlHARp2o69Q==[/tex](左边受拉)[tex=18.929x1.214]yWdQY82wg8I7jn6ZCMFrh/EdZBH43Sb8LYW99+ZtTxI08Cwnz8xm4IsLonl/ebwAJi4ZaUNBJAh8eUYOvKmi/PpqPNPjprpJB9OT99JD800=[/tex][tex=1.643x1.0]gnFAYaXaKKVYdsI7/H/gCA==[/tex] 段无荷栽作用, 将杆端弯矩连以直线即为此杆的弯矩图。 [tex=1.571x1.0]OqEEpPNZWA09PEJkULuN0A==[/tex]段 有荷堆作用，将杆端弯矩连以直线再且加简支梁的弯矩图,即为此杆的弯矩图。[tex=1.286x1.357]H6tHfFjOZ3ZWdB4qPQ9Ocg==[/tex]作 [tex=1.214x1.286]m4ffnbQsECmaJPZCFlufYg==[/tex]图 (题 [tex=3.643x1.357]BVYuSNBn4OOMnnM7JlJ0g8Gul4m9jQi4tyqW9EeYpt4=[/tex] 图)。求杆端剪力:[tex=19.929x3.071]rZM5/OPAdr7aX+kNl9iwpOInw07krc7C3wGjLHFuPfzHruqzIrG7TiJ/LSCfVWOPc/hRpzrHP+h1IFPVQc+aXGsog5uj+sBnQjJhAv4B+hK/FACzGjW50iFaS8SPrhk0UVVt3csBh6HYH6y8SL0bGe7gwYacKkoAwK6PJDSZXt1CQ/L8Nb3H5dqsNx9gAKVd[/tex][tex=1.286x1.357]dF+j2ufB5JBOJwdIPfmkfg==[/tex] 作 [tex=1.0x1.286]j5g8ZfiEfVZMPH53KPq6Pg==[/tex] 图[tex=0.429x1.357]1Ism+8A9dIDx2t3GxPupUA==[/tex] 题 [tex=3.643x1.357]TkWEdlcODQpHgKa1eTqHHhcNjIrhvETDgBETIAp9vQc=[/tex] 图)。求杆端轴力:[tex=19.286x1.214]qedcOH7ZocmL1SR9eLkNZJmK8SCT0Pu35xRMcuQDFzCIV7AZ8qd+xbPDm5sGt6JnFzjrgT/uhuR7xYs6yQcuSQOaMfroQ9b/P9YDviGVdD0=[/tex]
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    • 0

      试作题[tex=2.286x1.143]EOkEs4pvtv2Gizzp2cPfkQ==[/tex]图所示刚架的弯矩图。[img=550x302]179c20007569c0d.png[/img]

    • 1

      试作题[tex=3.143x1.357]j4pQ4G61sCDeAf+euPWMXA==[/tex]图所示刚架的[tex=1.0x1.0]/4LSvKfNeQWJ+IvWbbbjdA==[/tex]图。设[tex=2.0x1.0]hYBAALM+V4PV1D5W5pIDqA==[/tex]常数。[img=441x400]179df25d3eab6aa.png[/img][img=389x232]179df260d0c0b2c.png[/img]

    • 2

      试作题[tex=3.143x1.357]oJv5mKccXwDha0SsJPr3Tg==[/tex]图所示刚架的[tex=1.0x1.0]/4LSvKfNeQWJ+IvWbbbjdA==[/tex]图(图中[tex=1.214x1.0]aXJNSgwe9sYfky/Vv9M4JQ==[/tex]为相对值).[img=494x395]179df1b3b3e8f5e.png[/img]

    • 3

      试作题[tex=3.143x1.357]7Gf2vAy6A63vVSUV8rhp3A==[/tex]图所示刚架的内力图。设[tex=2.0x1.0]C1eXktko86a0BBkBgiRJ8Q==[/tex]常数。[img=497x190]179df2f092e1bca.png[/img][img=494x196]179df2f3a616048.png[/img][img=501x203]179df2fd4242a79.png[/img]

    • 4

      试作题[tex=4.0x1.357]lgPGnZ3hooxlWEibpzq2VA==[/tex]图[tex=1.571x1.357]4eOcprvzo2euCmp7kqHOZg==[/tex]图所示组合结构的内力图。[img=486x293]179cfa36d355eea.png[/img][img=466x261]179cfa3b07aac2a.png[/img]