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銆€銆€娌垮粻鎴跨副鍚�锛屼篃瑕佽€冩叜绲�(ji茅)妲�(g貌u)鐨勭┅(w臎n)瀹氥€傚湪寤犳埧绺卞悜锛屽悇闁€寮忓墰鏋朵箣闁撻€氬父鍦ㄦ獝鍙ｈ檿鐢ㄥ墰鎬х郴妗块壐鎺ョ浉閫�銆傚鏋滀笉鐢ㄦ煴闁撴敮鎾�锛屽湪姘村钩鑽疯級浣滅敤涓�锛岀祼(ji茅)妲�(g貌u)鍦ㄧ副鍚戞槸鍙畩楂旂郴銆傚洜姝ら€氬父鍋氭硶鏄湪寤犳埧鍏╅牠鐨勭涓€鏌遍枔鍔犱笂浜ゅ弶鐨勬媺妗挎敮鎾�锛岃嵎杓夐€氶亷鍓涙€х郴妗垮偝鑷虫敮鎾愬啀鍌宠嚦鍩虹(ch菙)銆傜暥(d膩ng)寤犳埧杓冮暦鏅�(sh铆)锛屽湪涓枔璺ㄦ垨鐩告噳(y墨ng)鐨勮法铏曚篃瀹滃竷缃煴闁撴敮鎾愪互鍏嶅偝鍔涜矾绶氬ぇ闀疯€屼娇绲�(ji茅)妲�(g貌u)鐨勭副鍚戝墰搴︿笉瓒�銆備竴鑸湴锛屼娇鐢ㄤ氦鍙夋媺妗挎敮鎾愮殑闁撹窛鍙堝疁澶т簬50m銆�

銆€銆€涔熻ū鏈変汉鏈�(hu矛)鎻愬嚭娌垮粻鎴跨副鍚戜害鍙仛鎴愬墰绡€(ji茅)榛�(di菐n)?锛熸ⅱ璧傽妯ｅ仛锛屼絾涓€鑸笉閫欐ǎ鍋�锛屽苟涓嶆槸鐢变簬鍓涚瘈(ji茅)榛�(di菐n)鏂藉伐楹荤叐锛岃€屼富瑕佹槸鐢ㄩ嫾鍟忛銆傞€欏€�(g猫)鍟忛鍙互寰炰笅闈㈠叐鏂归潰鐪嬶細杞�(zhu菐n)鑷挵(hu谩n)鐞冪恫(w菐ng)鏍du24ol.com

銆€銆€濡傛灉瑕佸皣绲�(ji茅)妲�(g貌u)鍦ㄥ叐鍊�(g猫)鏂归潰(姗悜鍜岀副鍚�)鍋氭垚鍓涙帴锛孒褰㈡埅闈㈠彲鑳戒笉鍐嶈兘浣跨敤銆傚鍓嶆墍杩�锛孒褰㈡埅闈㈠湪寮辫桓鏂瑰悜鐨勫挤(qi谩ng)搴﹀拰鍓涘害閮藉お灏忥紝姣斿叾寮�(qi谩ng)杌告柟鍚戝皬鍗佸咕鍊嶈嚦骞惧崄鍊�銆傚洜姝よ鐢ㄥ埌绠卞舰鎴潰鎴栫褰㈡埅闈�銆�

銆€銆€鐢变簬浣跨敤鏀拹锛屽皪鏌卞湪绺卞悜寮�(qi谩ng)搴﹀拰鍓涘害娌掓湁鐗瑰垾瑕佹眰锛岄噰鐢℉鍨嬮嫾鎴潰250×300×8×6锛屾瘡绫崇敤閶奸噺鐐�44.8kg銆傝嫢鍙栨秷鏀拹锛岄噰鐢ㄧ褰㈡埅闈�250×300×8×6锛屾瘡绫崇敤閶奸噺鐐�58.2kg锛岃垏H鍨嬮嫾鎴潰鐩告瘮锛屾瘡绫崇敤閶奸噺澧炲姞30%銆�

銆€銆€灏嶄簬鎻愰珮绲�(ji茅)妲�(g貌u)寮�(qi谩ng)搴﹀拰鍓涘害锛屾帶鍒剁祼(ji茅)妲�(g貌u)璁婂舰锛屼娇鐢ㄦ敮鎾愮郴绲�(t菕ng)鏇存湁鏁�锛屼互涓嬬殑绨″柈渚嬪瓙鍙互瑾槑鍟忛锛�

銆€銆€涓€鍊�(g猫)Q235鎳歌噦鏌卞湪鏌遍爞浣滅敤鍔汸=10KN(1.0T)

銆€銆€寰炲挤(qi谩ng)搴﹁€冩叜锛屽綆鐭╃偤锛�

銆€銆€M=10×8=80KN (2-1)

銆€銆€鎵€瑕佹眰鐨勬渶灏忔埅闈㈡ā閲廤=KM/[σ]=1.4×80×106/215=521×103mm3

銆€銆€寮忎腑锛孠-鑽疯級绯绘暩(sh霉)锛�

銆€銆€M-鑽疯級寮曡捣鐨勫綆鐭�

銆€銆€σ-鏉愭枡瑷�(sh猫)瑷�(j矛)鎳�(y墨ng)鍔�

銆€銆€鐢℉褰㈡埅闈�300×200×8×6 W=531×103mm3

銆€銆€鎴潰闈㈢⿳A=200×8×2+284×6=4904mm2

銆€銆€鎴潰鍦ㄥ彈褰庢柟鍚戠殑鎱ｆ€х煩I=79.7×106mm4

銆€銆€鐢ㄩ嫾=4904×10-6×8×7850=308kg

銆€銆€缍�(j墨ng)椹�(y脿n)绠楋紝涓婅堪鎴潰鐨勭┅(w臎n)瀹氳嚚鐣屽綆鐭╁ぇ浜庤嵎杓夊紩璧风殑褰庣煩锛屽洜姝ゆ墍閬告埅闈㈡豢瓒崇┅(w臎n)瀹氳姹傘€�

銆€銆€鐝�(xi脿n)鍦ㄥ皣涓婅堪绲�(ji茅)妲�(g貌u)鏀圭偤涓€鏍归壐鎺ユ煴鍔犱笂绾滈ⅷ(f膿ng)鎷夋】鐨勬柟妗�锛岀敱涓婂湒鍙煡锛�

銆€銆€鎷夋】鍔� NT=10kN/cos60o=20kN

銆€銆€鎵€闇€鏈€灏忛潰绌岮=KN/[σ]=1.4×20×103/215=130.2mm2 (2-2)

銆€銆€K-鑽疯級绯绘暩(sh霉)锛�

銆€銆€N-鑽疯級寮曡捣鐨勬】浠跺姏锛�

銆€銆€σ-鏉愭枡瑷�(sh猫)瑷�(j矛)鎳�(y墨ng)鍔�

銆€銆€Q235鐩村緫16鐨勬媺妗块潰绌嶇偤201mm2

銆€銆€閴告帴鏌辩殑鍔涳紝NC=10kn/tg30o=17.32kn

銆€銆€瑭﹂噰鐢ㄥ湏绠℃埅闈� 102(鐩村緫)×2.5(澹佸帤)

銆€銆€闈㈢⿳=781mm2;鍥炶綁(zhu菐n)鍗婂緫I=35.2mm

銆€銆€闀风窗(x矛)姣�λ=L/r=8000/35.2=227.3

銆€銆€寮忎腑L-鏌遍珮;r-鎴潰鍥炶綁(zhu菐n)鍗婂緫

銆€銆€鍙楀绌�(w臎n)瀹氱郴鏁�(sh霉)φ=0.148

銆€銆€瀵�(sh铆)闅涙噳(y墨ng)鍔�σ=KN/A=1.4×17.32×103/781×0.148=210N/mm2 (2-3)

銆€銆€寮忎腑锛孠-鑽疯級绯绘暩(sh霉)锛�杞�(zhu菐n)鑷挵(hu谩n) 鐞� 缍�(w菐ng) 鏍du24ol.com

銆€銆€N-鑽疯級寮曡捣鐨勬】浠跺姏锛�

銆€銆€A-妗夸欢鎴潰闈㈢⿳

銆€銆€瀵�(sh铆)闅涙噳(y墨ng)鍔�σ=210<瑷�(sh猫)瑷�(j矛)鎳�(y墨ng)鍔�=215N/mm2

銆€銆€婊胯冻瑕佹眰锛�

銆€銆€瀵�(sh铆)闅涚敤閶�=γΣ(A×L)=7850×(781×10-6×8+201×10-6×8/cos30o)

銆€銆€= 63.6kg

銆€銆€寮忎腑锛�γ-鏉愭枡鍑堥噸锛�

銆€銆€A-妗夸欢鎴潰闈㈢⿳锛�

銆€銆€L-妗夸欢闀峰害

銆€銆€Σ-姹傚拰铏�(h脿o)锛屾寚灏嶇祼(ji茅)妲�(g貌u)涓墍鏈夋】浠剁殑瑷�(j矛)绠楁眰鍜�銆�

銆€銆€閴告帴鏌卞姞涓婃媺妗挎敮鎾愮殑鐢ㄩ嫾锛屽儏鐐烘嚫鑷傛煴鐢ㄩ嫾鐨�20.6%銆�

銆€銆€浠ヤ笂鍋囧畾鏌遍爞鍔涙槸浣滅敤鍦ㄦ煇涓€鍊�(g猫)鍥哄畾鐨勬柟鍚戙€傚鏋滃姏鍙互浣滅敤鍦ㄤ换涓€鍊�(g猫)鏂瑰悜锛屼緥濡傞ⅷ(f膿ng)鑽疯級锛屽墖鎳歌噦鏌辫瑷�(sh猫)瑷�(j矛)鎴愮偤绠″舰鎴栫褰㈡埅闈�銆傜褰㈡埅闈㈣純鍦撳舰鎴潰鏈夋晥涓€浜�銆傞噰鐢ㄦ鏂圭褰㈡埅闈㈠涓嬶細

銆€銆€鎴潰鎱ｆ€х煩锛欼=73.6×106mm4

銆€銆€鎴潰褰庢洸姗噺锛歐=545×103mm3

銆€銆€(>521×103mm3锛屽挤(qi谩ng)搴﹁▓(j矛)绠楁墍闇€鎴潰妯￠噺)

銆€銆€闈㈢⿳A=6336mm2

銆€銆€鐢ㄩ嫾=388kg

銆€銆€灏嶄簬閴告帴鏌辫鍦ㄥ洓鍊�(g猫)鏂瑰悜鎷変笂绾滈ⅷ(f膿ng)鎷夋】锛屾鏅�(sh铆)锛�

銆€銆€鐢ㄩ嫾=A(781×10-6×8+4×201×10-6×8/cos30o)×7850=107.3kg

銆€銆€鐐烘嚫鑷傛煴鐢ㄩ嫾鐨�27%銆�

銆€銆€d.寰炵祼(ji茅)妲�(g貌u)璁婂舰(鍓涘害)涓婅€冩叜鍟忛锛�

銆€銆€(1)灏嶄簬’c’涓殑鏂圭鎳歌噦鏌卞湪鏌遍爞浣滅敤10KN(1鍣�)姘村钩鍔涙檪(sh铆)锛屾煴闋備綅绉�δ鐐猴細

銆€銆€δ=PL3/3EI=10×83×1012 /3×2.05×105×73.6×106=113.1mm(≈L/70)(2-4)

銆€銆€寮忎腑锛孭-鍔�锛�

銆€銆€L-鏌遍珮

銆€銆€E-褰堟€фā閲忎締

銆€銆€I-鎴潰鎱ｆ€х煩

銆€銆€(2)灏嶉壐鎺ユ煴鍔犵簻棰�(f膿ng)鐨勭祼(ji茅)妲�(g貌u)锛屽湪鍚屾ǎ鑽疯級浣滅敤涓�锛屾煴闋備綅绉�δ鐐猴細

銆€銆€δ=ΣNNL/EA=[20×2×8/201×cos30o+17.32×1.732×8/781]×106/2.05×105=10.5mm (2-5)

銆€銆€寮忎腑锛� N-鑽疯級寮曡捣鐨勬】浠跺姏锛�

銆€銆€N-鍠綅鍔涘湪浣嶇Щ鏂瑰悜涓婂紩璧风殑妗夸欢鍔涳紝

銆€銆€L-妗夸欢闀峰害

銆€銆€E-褰堟€фā閲�

銆€銆€A-妗夸欢鎴潰闈㈢⿳

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