銆€銆€1.2.3.鎸戞部妯℃澘瑷�(sh猫)瑷�(j矛)鑸囬(y脿n)绠� 缍�(j墨ng)瑷�(j矛)绠�(鏂规硶鍚屼笂锛岀暐)寰楋細蟽=2.43MPa锛�?=0.23mm銆傞’鐒�锛屾寫娌挎ā鏉跨殑寮�(qi谩ng)搴﹀拰鍓涘害鍧囨豢瓒宠ō(sh猫)瑷�(j矛)鍜屾柦宸ヨ姹傘€�

銆€銆€1.3.鏀灦瑷�(sh猫)瑷�(j矛)鑸囬(y脿n)绠楃敱浜庢敮鏋剁副鏈ㄥ拰姗湪鐨勫挤(qi谩ng)搴﹀拰鍓涘害瑷�(j矛)绠楁柟娉曡垏妯℃澘椤炰技锛屾湰鏂囧氨涓嶅啀绱晿锛屼笅闈㈠儏灏辩鎵ｆ敮鏋堕€�(j矛n)琛岃ō(sh猫)瑷�(j矛)鍜岄(y脿n)绠�銆�

銆€銆€(1)鑽疯級瑷�(j矛)绠� 妯℃澘鑷噸锛歛=0.095KN/m2;绺辨湪姗湪鑷噸锛歜=0.35 KN/m2;閶肩瓔娣峰嚌鍦熻嚜閲嶏細c=20.75 KN/m2;鏂藉伐鑽疯級锛歞=1.5 KN/m2;鎸悧鑽疯級锛歟=2.0 KN/m2銆俼=1.2(0.095+0.35+20.75)+1.4(1.5+2.0)=30.334 KN/m2姣忔牴绔嬫煴鎵垮彈鑽疯級鍔汸=qA=30.334脳1.2脳0.9=32.76KN

銆€銆€(2)绔嬫】椹�(y脿n)绠椾互1銆�2绡€(ji茅)闁撶珛妗跨偤鍠厓閫�(j矛n)琛岃▓(j矛)绠�銆傜珛妗跨偤桅48脳3.5閶肩锛屽墖锛欰=4.89cm2锛孖x=12.19 cm4锛學x=5.08 cm3锛屽洖鏃嬪崐寰憆x=1.579cm绔嬫】绱�(x矛)闀锋瘮鐐猴細位=渭h/rx=1.5脳120/1.579=114<[位0]=150鏌ヨ〃寰�锛孉3閶肩椤炴埅闈㈣桓澹撴(g貌u)浠剁┅(w臎n)瀹氱郴鏁�(sh霉)唯=0.823锛屽墖锛歅/(唯A)=81.4MPa<[蟽0]=215MPa

銆€銆€(3)鍦板熀鎵胯級鍔涢(y脿n)绠楃珛妗垮簳閮ㄧ偤5cm鍘�25cm瀵殑鏈ㄦ澘锛屾澘搴曠偤50cm鍘氱殑澶(sh铆)鐭崇伆鍦�銆傗憼鏉垮簳鎵胯級鍔涢(y脿n)绠�銆侫=0.25脳0.9=0.225m2蟽=P/A=145.5<[蟽0]=500KPa鈶＄煶鐏板湡搴曟壙杓夊姏椹�(y脿n)绠�銆傜煶鐏板湡瑷�(j矛)绠楀搴=b0+2H0tana=0.25+2脳0.5脳1.25=1.5m>1.2m鎸夋暣楂斿彈鍔涜▓(j矛)绠�锛屽墖鐭崇伆鍦熷簳澹撴噳(y墨ng)鍔涳細蟽=p+纬H=30.334+1.7脳0.5 =31.184KPa<[蟽0]=60KPa鐢变簬鍩哄簳鍦熷堡鐐虹礌濉湡銆佷簽鐮傚湡銆佷簽绮樺湡銆佹筏娉ヨ唱(zh矛)绮樺湡锛孾蟽0]鏈€灏忓€肩偤60KPa锛岄’鐒断�<[蟽0]锛屾墍浠ユ壙杓夊姏鑳藉婊胯冻瑕佹眰銆�

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