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鏀惰棌
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銆€銆€CK0+667.275绔嬩氦姗嬬姊侊紝瑷▓閲囩敤妯欐簴寮峰害fpk=1860MPa鐨勯珮寮蜂綆鏉惧紱閶肩禐绶�锛屽叕绋辩洿寰�15.2mm锛屽叕绋遍潰绌岮g=139mm2锛屽綀鎬фā閲廍g=1.95脳105MP銆傜偤淇濊瓑鏂藉伐绗﹀悎瑷▓瑕佹眰锛屾柦宸ヤ腑閲囩敤娌瑰琛ㄨ畝鏁�(sh霉)鍜岄嫾绲炵窔鎷変几閲忔脯瀹氬€奸洐鎺�銆傜悊璜栦几闀烽噺瑷堢畻閲囩敤銆婂叕璺⿱姊佹柦宸ユ妧琛撹(gu墨)鑼冦€婮TJ041-2002闄勮〃G-8闋愭噳鍔涢嫾绲炵窔鐞嗚珫浼搁暦閲忓強骞冲潎寮垫媺鎳夊姏瑷堢畻鍏紡銆�
銆€銆€涓€銆佽▓绠楀叕寮忓強鍙冩暩(sh霉)锛�
銆€銆€1銆侀爯鎳夊姏骞冲潎寮垫媺鍔涜▓绠楀叕寮忓強鍙冩暩(sh霉)锛�
銆€銆€寮忎腑锛�
銆€銆€Pp鈥曢爯鎳夊姏绛嬪钩鍧囧嫉鎷夊姏(N)
銆€銆€P鈥曢爯鎳夊姏绛嬪嫉鎷夌鐨勫嫉鎷夊姏(N)
銆€銆€X鈥曞緸寮垫媺绔嚦瑷堢畻鎴潰鐨勫瓟閬撻暦搴�(m)
銆€銆€胃鈥曞緸寮垫媺绔嚦瑷堢畻鎴潰鐨勬洸绶氬瓟閬撻儴鍒嗗垏绶氱殑澶捐涔嬪拰(rad)
銆€銆€k鈥曞瓟閬撴瘡绫冲眬閮ㄥ亸宸皪鎽╂摝鐨勫奖闊跨郴鏁�(sh霉)锛氬彇0.0015
銆€銆€u鈥曢爯鎳夊姏绛嬭垏瀛旈亾澹佺殑纾ㄦ摝绯绘暩(sh霉)锛屽彇0.25
銆€銆€2銆侀爯鎳夊姏绛嬬殑鐞嗚珫浼搁暦鍊艰▓绠楀叕寮忓強鍙冩暩(sh霉)锛�
銆€銆€鈻矻=PpL/(ApEp)
銆€銆€寮忎腑锛�
銆€銆€Pp鈥曢爯鎳夊姏绛嬪钩鍧囧嫉鎷夊姏(N)
銆€銆€L鈥曢爯鎳夊姏绛嬬殑闀峰害(mm)
銆€銆€Ap鈥曢爯鎳夊姏绛嬬殑鎴潰闈㈢⿳(mm2)锛屽彇139mm2
銆€銆€Ep鈥曢爯鎳夊姏绛嬬殑褰堟€фā閲�(N/mm2)锛屽彇1.95脳105N/mm2
銆€銆€浜�銆佷几闀烽噺瑷堢畻锛�
銆€銆€1銆丯1鏉熶竴绔殑浼搁暦閲忥細
銆€銆€鍠牴閶肩禐绶氬嫉鎷夌殑寮垫媺鍔�
銆€銆€P=0.75脳1860脳139=193905N
銆€銆€X鐩�=3.5m;X鏇�=2.35m
銆€銆€胃=4.323脳180=0.25rad
銆€銆€KX鏇�+u胃=0.0015脳2.35+0.25脳0.25=0.066
銆€銆€Pp=193905脳(1-e-0.066)/0.066=187644N
銆€銆€鈻矻鏇�=PpL/(ApEp)=187644脳2.35/(139脳1.95脳105)=16.3mm
銆€銆€鈻矻鐩�=PpL/(ApEp)=187644脳3.5/(139脳1.95脳105)=24.2mm
銆€銆€鈻矻鏇�+鈻矻鐩�=16.3+24.2=40.5
銆€銆€2銆丯2鏉熶竴绔殑浼搁暦閲忥細
銆€銆€鍠牴閶肩禐绶氬嫉鎷夌殑寮垫媺鍔涳細
銆€銆€P=0.75脳1860脳139=193905N
銆€銆€X鐩�=0.75;X鏇�=2.25m
銆€銆€胃=14.335脳蟺/180=0.2502
銆€銆€KX鏇�+u胃=0.0015脳2.25+0.25脳0.2502=0.0659
銆€銆€Pp=193905脳(1-e-0.0659)/0.0659=187653N
銆€銆€鈻矻鏇�=PpL/(ApEp)=187653脳2.25/(139脳1.95脳105)=15.6mm
銆€銆€鈻矻鐩�=PpL/(ApEp)=187653脳0.75/(139脳1.95脳105)=5.2mm
銆€銆€(鈻矻鏇�+鈻矻鐩�)*2=(15.6+5.2)*2=41.6mm
銆€銆€绗簩绔� 寮垫媺鏅傜悊璜栦几闀烽噺瑷堢畻
銆€銆€涓€銆佽▓绠楀弮鏁�(sh霉)锛�
銆€銆€1銆並鈥曞瓟閬撴瘡绫冲眬閮ㄥ亸宸皪鎽╂摝鐨勫奖闊跨郴鏁�(sh霉)锛氬彇0.0015
銆€銆€2銆乽鈥曢爯鎳夊姏绛嬭垏瀛旈亾澹佺殑鎽╂摝绯绘暩(sh霉)锛氬彇0.25
銆€銆€3銆丄p鈥曢爯鎳夊姏绛嬬殑瀵︽脯鎴潰闈㈢⿳锛�139mm2
銆€銆€4銆丒p鈥曢爯鎳夊姏绛嬪娓綀鎬фā閲忥細1.95脳105N/mm2
銆€銆€5銆侀尐涓嬫帶鍒舵噳鍔涳細蟽k=0.75Ryb=0.75脳1860=1395N/mm2
銆€銆€6銆佸柈鏍归嫾绲炵窔寮垫媺绔殑寮垫媺鎺у埗鍔涳細P=蟽kAp=193905N
銆€銆€7銆佸崈鏂ら爞瑷堢畻闀峰害锛�60cm
銆€銆€8銆佸伐鍏烽尐闀峰害锛�7cm
銆€銆€浜屻€佸嫉鎷夋檪鐞嗚珫浼搁暦閲忚▓绠楋細
銆€銆€浠1鏉熼嫾绲炵窔鐐轰緥锛�
銆€銆€N1鏉熶竴绔殑浼搁暦閲忥細
銆€銆€寮忎腑锛�
銆€銆€P鈥曟补澹撹〃璁€鏁�(sh霉)(MPa)
銆€銆€F鈥曞崈鏂ら爞鎷夊姏(KN)
銆€銆€P=P1鏅�锛�
銆€銆€(1)15%蟽con=232.7KN鏅傦細
銆€銆€P=-0.48+0.021PF=-0.48+0.0219脳232.7=4.6MPa
銆€銆€(3)30%蟽con=465.4KN鏅傦細
銆€銆€P=-0.48+0.021PF=-0.48+0.0219脳465.4=9.7MPa
銆€銆€(4)100%蟽con=1551.2KN鏅傦細
銆€銆€P=-0.48+0.021PF=-0.48+0.0219脳1551.2=33.5MPa
銆€銆€(5)103%蟽con=1597.7KN鏅傦細
銆€銆€P=-0.48+0.021PF=-0.48+0.0219脳1597.7=34.5MPa
銆€銆€P=P2鏅傦紝
銆€銆€(1)15%蟽con=203.6KN鏅傦細
銆€銆€P=-0.48+0.021PF=-0.48+0.0219脳203. 6=4.0MPa
銆€銆€(3)30%蟽con=407.2KN鏅傦細
銆€銆€P=-0.48+0.021PF=-0.48+0.0219脳407.2=8.4MPa
銆€銆€(4)100%蟽con=1357.3KN鏅傦細
銆€銆€P=-0.48+0.021PF=-0.48+0.0219脳1357.3=29.2MPa
銆€銆€(5)103%蟽con=1398.0KN鏅傦細
銆€銆€P=-0.48+0.021PF=-0.48+0.0219脳1398.0=30.1MPa
銆€銆€涓�銆�2407铏熷崈鏂ら爞寮垫媺锛屽崈鏂ら爞鍥炴鏂圭▼锛�
銆€銆€P=0.02247F+0.08
銆€銆€寮忎腑锛�
銆€銆€P鈥曟补澹撹〃璁€鏁�(sh霉)(MPa)
銆€銆€F鈥曞崈鏂ら爞鎷夊姏(KN)
銆€銆€P=P1鏅傦細
銆€銆€(1)15%蟽con=232.7KN鏅傦細
銆€銆€P=-0.2247F+0.08=0.08+0.02247脳232.7=5.3MPa
銆€銆€(3)30%蟽con=465.4KN鏅傦細
銆€銆€P=-0.02247F+0.08=0.08+0.02247脳465.4=10.5MPa
銆€銆€(4)100%蟽con=1551.2KN鏅傦細
銆€銆€P=-0.02247F+0.08=0.08+0.02247脳1551.2=34.9MPa
銆€銆€(5)103%蟽con=1597.7KN鏅傦細
銆€銆€P=-0.02247F+0.08=0.08+0.02247脳1597.7=36.0MPa
銆€銆€P=P2鏅傦細
銆€銆€(1)15%蟽con=203. 6KN鏅傦細
銆€銆€P=-0.2247F+0.08=0.08+0.02247脳203.6=4.7MPa
銆€銆€(3)30%蟽con=407.2KN鏅傦細
銆€銆€P=-0.02247F+0.08=0.08+0.02247脳407.2=9.2MPa
銆€銆€(4)100%蟽con=1357.3KN鏅傦細
銆€銆€P=-0.02247F+0.08=0.08+0.02247脳1357.3=30.6MPa
銆€銆€(5)103%蟽con=1398.0KN鏅傦細
銆€銆€P=-0.02247F+0.08
銆€銆€閶肩禐绶氬綀鎬фā閲忥細Ep=193.8889Gpa
銆€銆€鎴潰绌嶏細Ap=141.71mm2銊嶆牴(璩囨枡3)
銆€銆€闋愭噳鍔涢嫾绲炵窔寮垫媺鐞嗚珫浼搁暦閲忚▓绠楀叕寮�(璩囨枡1绗�129闋�)
銆€銆€螖L=(PpL)/(ApEp)
銆€銆€寮忎腑锛歅p??闋愭噳鍔涚瓔鐨勫钩鍧囧嫉鎷夊姏(N)锛岀洿绶氱瓔鍙栧嫉鎷夌鐨勬媺鍔涳紝鍏╃寮垫媺鐨勬洸绶氱瓔鎸夎硣鏂�1闄勯寗G-8(绗�339闋�)瑷堢畻
銆€銆€L??闋愭噳鍔涚瓔鐨勯暦搴�(mm)
銆€銆€Ap??闋愭噳鍔涚瓔鐨勬埅闈㈤潰绌�(mm2)
銆€銆€Ep??闋愭噳鍔涚瓔鐨勫綀鎬фā閲�(N/mm2)
銆€銆€Pp=P(1-e-(kx+渭胃))/(kx+渭胃)
銆€銆€寮忎腑锛歅p??闋愭噳鍔涚瓔骞冲潎寮垫媺鍔�(N)
銆€銆€P??闋愭噳鍔涚瓔寮垫媺绔殑寮垫媺鍔�(N)
銆€銆€x??寰炲嫉鎷夌鑷宠▓绠楁埅闈㈢殑瀛旈亾闀峰害(m)
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銆€銆€娉細鐣堕爯鎳夊姏绛嬬偤鐩寸窔鏅侾p=P
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