鐝�(xi脿n)婢嗙姊佹ā鏉胯垏鏀灦鐨勮ō(sh猫)瑷�(j矛)鍙婃柦宸ヨ唱(zh矛)閲忔帶鍒朵笅


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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