龍門吊設(shè)計書

目錄TOC1、設(shè)計要求22、龍門吊尺寸擬定23、輪壓計算34、龍門吊縱向穩(wěn)定性檢算55、龍門架各桿件的內(nèi)力計算及截面選擇7100T龍門吊設(shè)計書1、設(shè)計要求本龍門吊為某橋吊運(yùn)55mT梁而設(shè)計，為滿足現(xiàn)場施工需要其技術(shù)參數(shù)須滿足以下要求：最大起重量：1000KN；起重高度：≥10m；凈寬：12m；適用縱向坡度：≤3%；龍門吊采用N型萬能桿件拼裝，本設(shè)計僅為該吊機(jī)的結(jié)構(gòu)設(shè)計，機(jī)械設(shè)備根據(jù)施工需要另自行設(shè)計或選用。2、龍門吊尺寸擬定根據(jù)設(shè)計要求及N型萬能桿件定型尺寸，擬定龍門吊門架凈寬12m，凈高10m（不含行走系統(tǒng)高度），驗(yàn)算時行走系統(tǒng)高度按1.6m考慮，天車外輪廓尺寸按3×2m2考慮。主梁采用三角形斷面桁架式雙主梁，行走系統(tǒng)采用4臺行走臺車，每臺行走臺車布置4個輪子，行走軌道采用P50鋼軌，雙軌道布置。龍門吊具體構(gòu)造如圖-1所示。100T龍門吊構(gòu)造圖圖-1(單位：cm)3、輪壓計算3.1荷載計算3.1.1恒載經(jīng)初步估算主桁架按，塔架按計算，則：主桁架自重塔架自重走行結(jié)構(gòu)新制桿件及車輪等按100KN估計。恒載總重：恒載產(chǎn)生的支反力：活載及風(fēng)載產(chǎn)生支反力計算模型圖-2（單位：cm）3.1.2活載根據(jù)《起重機(jī)設(shè)計手冊》（中國鐵道出版社）推薦值起重量100T的雙梁吊鉤式龍門起重機(jī)天車輪壓為385KN（其中含天車、吊鉤等自重，且已考慮沖擊系數(shù)），因而活載總重，則活載產(chǎn)生的最大支反力為：式中：Q活——活載總重；k——沖擊系數(shù)，Q活中已考慮，故取；l=14m；，起吊天車重心至塔架中心線最小距離；故，3.1.3縱向風(fēng)力計算按式-1計算風(fēng)力：式-1式中：W——風(fēng)壓，取600Pa；K1——迎風(fēng)面積折減系數(shù)，桁架取0.4，天車取1.0；K2——空氣動力系數(shù)，取1.5；則，天車風(fēng)力：天車風(fēng)力產(chǎn)生的彎矩：橫梁風(fēng)力：天車風(fēng)力產(chǎn)生的彎矩：塔架風(fēng)力：天車風(fēng)力產(chǎn)生的彎矩：風(fēng)力對龍門吊產(chǎn)生的總彎矩：總風(fēng)力產(chǎn)生的支反力：3.2荷載組合及輪壓檢算受力最大的一組輪子總壓力為：采用Φ600輪子，其允許壓力為一組輪子數(shù)故，每組輪子取4個Φ600輪子滿足最大起重要求。4、龍門吊縱向穩(wěn)定性檢算縱向穩(wěn)定計算模型圖-3（單位：cm）注：圖中未示出3%的縱向坡度，Q恒X、Q恒Y為龍門吊自重處于3%縱坡上時X、Y方向上的分力，龍門吊重心偏安全的取橫梁底部即y=11.6m處。4.1縱向風(fēng)力產(chǎn)生的傾覆力矩由節(jié)計算可得，縱向風(fēng)力產(chǎn)生的傾覆力矩為：4.2慣性力產(chǎn)生的傾覆力矩按牛頓第二定律計算慣性力，則取龍門吊縱移速度，加速時長取2s，則加速度。天車產(chǎn)生的慣性力力矩取天車重，則慣性力力矩：4.2.2橫梁產(chǎn)生的慣性力力矩橫梁自重，則慣性力力矩：4.2.3塔架產(chǎn)生的慣性力力矩塔架自重，則慣性力力矩：龍門吊慣性力所產(chǎn)生的總力矩：4.3自重分力力矩由3.1.1節(jié)可知龍門吊總重：，作用于3%的斜坡上時其X、Y方向的分力分別為：自重在X方向產(chǎn)生的傾覆力矩：自重在Y方向產(chǎn)生的穩(wěn)定力矩：4.4起重分力力矩起重量按計，作用于3%的斜坡上時其X、Y方向的分力分別為：起重時在X方向產(chǎn)生的傾覆力矩：起重力作用點(diǎn)取天車重心位置，則，起重時在Y方向產(chǎn)生的穩(wěn)定力矩：4.5力矩組組合及穩(wěn)定定性驗(yàn)算龍門吊自行時的的穩(wěn)定性：：總傾覆力矩矩總穩(wěn)定定力矩穩(wěn)定性：，故，合格！龍門吊負(fù)載時的的穩(wěn)定性：：總傾覆力矩總穩(wěn)定定力矩穩(wěn)定性：，故，合合格！5、龍門架各桿件件的內(nèi)力計計算及截面面選擇5.1桿件內(nèi)內(nèi)力計算桿件內(nèi)力計算采采用通用有有限元軟件件ANSYYS建立空間間桁架模型型(如圖-4示)進(jìn)行分析。計算內(nèi)力時，假假設(shè)荷載作作用于節(jié)點(diǎn)點(diǎn)上，活載載按每主梁梁受兩個天天車輪壓（共4個輪壓）計計，作用于于桁架上弦弦相鄰兩節(jié)節(jié)點(diǎn)上，取取。恒載：主主梁按155KN/mm計，則每節(jié)節(jié)點(diǎn)作用恒恒載為300KN/mm，均作用用于主梁桁桁架上弦節(jié)節(jié)點(diǎn)上，主主梁水平桁桁架自重忽忽略不計；；塔架按9.0KNN/m計，則則每節(jié)點(diǎn)作作用恒載為為，均作用用于塔架頂頂部節(jié)點(diǎn)上上。各桿件件取圖-5三工況中中最大軸向向力控制選選取桿件截截面。圖-4龍門門架空間分分析模型圖-5各工工況力學(xué)模模型節(jié)點(diǎn)編號示意圖圖圖-6注：節(jié)點(diǎn)編號由由排號和點(diǎn)點(diǎn)號構(gòu)成，如如圖中a01，其中a為節(jié)點(diǎn)所所在桁架排排編號，01為同排桁架架內(nèi)節(jié)點(diǎn)號號，如101則表示第第一排桁架架內(nèi)編號為為01的節(jié)點(diǎn)。各桿件軸力見下下頁《桁架架各桿件軸力力表》。桁架各桿件軸力力表?xiàng)U件號兩端節(jié)號軸力（KN）控制軸力

(KNN)桿件

類型選取

截面ij工況一工況二工況三1-011011020.00.00.00.0橫撐2M41-0210110325.4-44.4-246.7-246.7柱2M11-03102103-120.2-123.5-102.1-123.5斜桿2M31-04102104-620.1-655.4-598.2-655.4柱3M11-051031040.00.00.00.0橫撐2M41-06103105-2.1-39.0-144.8-144.8柱2M11-0710310632.529.712.532.5斜桿1M51-08104106-620.1-655.4-598.2-655.4柱3M11-091051060.00.00.00.0橫撐2M41-10105107-2.1-39.0-144.8-144.8柱1M11-11106107-40.6-41.5-31.3-41.5斜桿2M51-12106108-402.8-423.3-390.5-423.3柱2M11-131071080.00.00.00.0橫撐2M41-14107109-7.5-30.8-97.3-97.3柱1M11-1510711065.166.141.366.1斜桿1M51-16108110-402.8-423.3-390.5-423.3柱2M11-171091100.00.00.00.0橫撐2M41-18109111-7.5-30.8-97.3-97.3柱1M11-19110111-146.7-148.1-96.0-148.1斜桿2M31-20110112-178.5-175.4-160.1-178.5柱1M11-211111120.00.00.00.0橫撐2M41-22111113-108.0-108.0-108.0-108.0柱1M11-2311111416.5-7.4-27.1-27.1斜桿2M51-24112114-178.5-175.4-160.1-178.5柱1M11-251131140.00.00.00.0弦桿1M11-26114115-124.0-128.1-102.3-128.1弦桿1M11-27115117124.0-128.1-102.3-128.1弦桿1M11-28117119-115.7-100.8-73.3-115.7弦桿1M1桁架各桿件軸力力表?xiàng)U件號兩端節(jié)號軸力（KN）控制軸力

(KNN)桿件

類型選取

截面ij工況一工況二工況三2-01201202-82.7-85.6-72.3-85.6橫撐2M42-02201203-31.6-44.2-69.7-69.7柱1M12-03202203117.0121.0102.3121.0斜桿2M52-04202204-82.7-85.6-72.3-85.6柱2M12-05203204-59.8-64.7-63.7-64.7橫撐2M42-0620320574.162.311.374.1柱1M12-07203206-32.4-29.5-12.2-32.4斜桿M52-08204206-331.8-352.1-320.5-352.1柱2M12-09205206-20.1-24.0-28.1-28.1橫撐2M42-10205207-18.5-51.1-127.6-127.6柱1M12-1120620760.963.552.063.5斜桿1M52-12206208-397.8-417.9-365.9-417.9柱2M12-132072083.21.3-11.2-11.2橫撐2M42-1420720970.740.1-65.370.7柱1M12-15207210-65.3-65.4-36.2-65.4斜桿2M52-16208210-507.6-544.7-502.0-544.7柱2M12-17209210-77.6-83.9-73.9-83.9橫撐2M42-1820921159.618.4-116.6-116.6柱1M12-19210211-171.4-174.7-86.5-174.7斜桿2M52-20210212-187.7-213.8-305.7-305.7柱2M12-21210216-346.4-358.7-227.3-358.7斜桿3M32-22211212137.6198.0223.4223.4弦桿2M12-23211213-45.2-30.7-15.6-45.2柱1M12-24211214-23.2-105.3-229.3-229.3斜桿2M32-25212214-368.8-426.3-538.2-538.2柱2M12-26212216270.0359.0370.5370.5弦桿2M12-27213214118.6111.270.4118.6弦桿2M12-28214215-175.1-356.0-299.1-356.0弦桿2M12-29214216392.1555.4293.2555.4斜桿3M3桁架各桿件軸力力表?xiàng)U件號兩端節(jié)號軸力（KN）控制軸力

(KNN)桿件

類型選取

截面ij工況一工況二工況三2-30215216-30.0-415.0-415.0-415.0豎桿4M42-31215217-183.4-383.3-328.0-383.3弦桿3M12-32216217-696.0-327.266.4-696.0斜桿4M32-33216218794.5729.5370.0794.5弦桿3M12-342172180.00.00.00.0豎桿4M42-35217219-752.7-431.0-204.1-752.7弦桿3M12-36217220109.2-259.7-108.8-259.7斜桿2M32-37218220794.5729.5370.1794.5弦桿3M12-38219220-415.0-30.0-30.0-415.0豎桿4M43-01301302-84.4-86.5-70.7-86.5橫撐2M43-02301303-24.1-36.6-64.1-64.1柱1M13-03302303122.6124.899.7124.8斜桿1M53-04302304-64.5-65.4-51.7-65.4柱2M13-05303304-67.5-72.9-71.2-72.9橫撐2M43-0630330580.870.922.180.8柱1M13-07303306-23.9-19.50.4-23.9斜桿1M53-08304306-365.2-387.7-354.6-387.7柱2M13-09305306-25.6-30.6-37.2-37.2橫撐2M43-10305307-9.5-41.0-120.5-120.5柱1M13-1130630739.740.531.340.5斜桿1M53-12306308-374.3-392.5-345.9-392.5柱2M13-13307308-12.1-15.2-248.8-248.8橫撐2M43-1430730941.713.2-79.6-79.6柱1M13-15307310-42.7-41.8-21.9-42.7斜桿2M53-16308310-489.7-524.8-484.2-524.8柱2M13-17309310-66.8-70.8-60.0-70.8橫撐2M43-1830931128.4-7.9-122.9-122.9柱1M13-19310311-223.8-234.9-143.7-234.9斜桿2M3桁架各桿件軸力力表?xiàng)U件號兩端節(jié)號軸力（KN）控制軸力

(KNN)桿件

類型選取

截面ij工況一工況二工況三3-20310312-172.2-191.4-264.8-264.8柱2M13-21310316-332.9-340.2-200.6-340.2斜桿3M33-22311312126.7184.3199.7199.7弦桿2M13-23311313-82.0-70.0-53.0-82.0柱1M13-24311314-12.4-98.0-223.7-223.7斜桿2M33-25312314-343.4-394.9-490.3-490.3柱2M13-26312316231.5309.5312.9312.9弦桿2M13-27313314121.5116.274.3121.5弦桿2M13-28314315-157.2-338.4-286.7-338.4弦桿2M13-29314316411.8580.8325.4580.8斜桿3M33-30315316-30.0-415.0-415.0-415.0豎桿4M43-31315317-165.6-365.7-315.7-365.7弦桿3M13-32316317-702.2-334.161.0-702.2斜桿4M33-33316318783.8715.8358.1783.8弦桿3M13-343173180.00.00.00.0豎桿4M43-35317319-743.7-423.1-199.5-743.7弦桿3M13-36317320115.3-252.9-103.4-252.9斜桿2M33-37318320783.8715.8358.1783.8弦桿3M13-38319320-415.0-30.0-30.0-415.0豎桿4M44-014014020.00.00.00.0橫撐2M44-024014031.7-67.8-263.6-263.6柱2M14-03402403-119.4-122.3-99.9-122.3斜桿2M34-04402404-623.5-659.9-604.1-659.9柱3M14-054034040.00.00.00.0橫撐2M44-06403405-11.5-49.5-156.0-156.0柱2M14-0740340623.919.3-0.723.9斜桿1M54-08404406-623.5-659.9-604.1-659.9柱3M14-094054060.00.00.00.0橫撐2M4桁架各桿件軸力力表?xiàng)U件號兩端節(jié)號軸力（KN）控制軸力

(KNN)桿件

類型選取

截面ij工況一工況二工況三4-10405407-115.5-49.5-156.0-156.0柱1M14-11406407-60.0-62.5-52.0-62.5斜桿2M54-12406408-412.6-435.1-402.0-435.1柱2M14-134074080.00.00.00.0橫撐2M44-14407409-20.6-46.4-117.3-117.3柱1M14-1540741042.941.016.842.9斜桿1M54-16408410-412.6-435.1-402.0-435.1柱2M14-174094100.00.00.00.0橫撐2M44-18409411-20.6-46.4-117.3-117.3柱1M14-19410411-137.3-141.2-101.6-141.2斜桿2M34-20410412-166.6-164.0-162.0-166.6柱1M14-214114120.00.00.00.0橫撐2M44-22411413-108.0-108.0-108.0-108.0柱1M14-23411414-10.9-35.8-58.4-58.4斜桿2M54-24412414-166.6-164.0-162.0-166.6柱1M14-254134140.00.00.00.0弦桿1M14-26414415-125.0-127.8-101.1-127.8弦桿1M14-27415417-125.0-127.8-101.1-127.8弦桿1M14-28417419-117.0-100.5-72.1-117.0弦桿1M1A-011132130.00.00.00.0橫撐2M4A-02213313-147.5-154.2-129.3-154.2橫撐2M4A-033134130.00.00.00.0橫撐2M4A-04111211-57.8-62.8-28.3-62.8橫撐2M4A-05211311-57.8-62.8-28.3-62.8橫撐2M4A-06311411-54.8-62.2-43.0-62.2橫撐2M4A-07213111-34.8-49.1-68.4-68.4斜桿2M5A-08213311-54.1-60.2-62.2-62.2斜桿2M5A-09313411-36.8-53.7-77.7-77.7斜桿2M5桁架各桿件軸力力表?xiàng)U件號兩端節(jié)號軸力（KN）控制軸力

(KNN)桿件

類型選取

截面ij工況一工況二工況三A-101092090.00.00.00.0橫撐2M4A-112093095.5-0.3-13.6-13.6橫撐2M4A-123094090.00.00.00.0橫撐2M4A-13111209-13.7-17.6-14.6-17.6斜桿2M5A-142093111.3-11.1-43.5-43.5斜桿2M5A-15309411-33.9-35.4-21.5-35.4斜桿2M5A-16107207-10.32.938.038.0橫撐2M4A-17207307-10.32.938.038.0橫撐2M4A-18307407-1.30.84.64.6橫撐2M4A-19209107-29.5-49.3-91.8-91.8斜桿2M5A-202093071.3-10.0-38.9-38.9斜桿2M5A-21309407-52.7-65.2-82.6-82.6斜桿2M5A-221052050.00.00.00.0橫撐2M4A-23205305-11.9-21.1-47.5-47.5橫撐2M4A-243054050.00.00.00.0橫撐2M4A-2510720568.569.948.169.9斜桿1M5A-26205307-8.6-15.7-34.3-34.3斜桿1M5A-2730540737.442.640.942.6斜桿1M5A-28103203-34.4-30.8-12.9-34.4橫撐2M4A-29203303-34.4-30.8-12.9-34.4橫撐2M4A-30303403-27.7-27.7-21.6-27.7橫撐2M4A-31103205-76.4-105.6-164.9-164.9斜桿2M3A-322053035.4-0.5-17.8-17.8斜桿2M3A-33403305-90.4-115.6-160.7-160.7斜桿2M3A-341012010.00.00.00.0橫撐2M4A-35201301108.5123.1134.8134.8橫撐2M4A-363014010.00.00.00.0橫撐2M4A-3720110337.455.393.793.7斜桿1M5A-382013037.37.24.87.3斜桿1M5桁架各桿件軸力力表?xiàng)U件號兩端節(jié)號軸力（KN）控制軸力

(KNN)桿件

類型選取

截面ij工況一工況二工況三A-3930140334.121.890.790.7斜桿1M5B-0111421485.277.640.985.2橫撐2M4B-0221431485.277.640.985.2橫撐2M4B-0331441459.448.6-6.559.4橫撐2M4B-041122120.00.00.00.0橫撐2M4B-0521231266.284.378.384.3橫撐2M4B-063124120.00.00.00.0橫撐2M4B-0711421283.3102.7100.8102.7斜桿2M3B-08212314-66.5-77.1-105.5-105.5斜桿2M3B-0941431293.7115.0134.8134.8斜桿2M3B-1041031024.531.244.044.0橫撐2M4B-11310210128.5141.7158.5158.5橫撐2M4B-12210110128.5141.7158.5158.5橫撐2M4B-13410312-148.3-172.8-184.1-184.1斜桿2M3B-14310212-55.0-65.6-99.9-99.9斜桿2M3B-15110212-184.4-209.3-233.6-233.6斜桿2M3B-164083080.00.00.00.0橫撐2M4B-17308208-76.0-76.8-61.1-76.8橫撐2M4B-182081080.00.00.00.0橫撐2M4B-1941030819.328.537.037.0斜桿2M3B-20310208-120.1-127.4-112.0-127.4斜桿2M3B-21110208-78.9-73.0-45.2-78.9斜桿2M3B-2240630626.326.821.126.8橫撐2M4B-23306206152.9160.3140.1160.3橫撐2M4B-24206106152.9160.3140.1160.3橫撐2M4B-25406308-143.8-158.6-158.6-158.6斜桿2M3B-26208306-125.1-132.1-116.3-132.1斜桿2M3B-27208106-229.3-247.7-233.4-247.7斜桿2M3桁架各桿件軸力力表?xiàng)U件號兩端節(jié)號軸力（KN）控制軸力

(KNN)桿件

類型選取

截面ij工況一工況二工況三B-284043040.00.00.00.0橫撐2M4B-29304204-133.5-139.8-124.3-139.8橫撐2M4B-302041040.00.00.00.0橫撐2M4B-3140630470.577.576.077.5斜桿2M5B-32306204-74.3-78.9-73.0-78.9斜桿2M5B-332041064.99.216.516.5斜桿2M5B-34402302166.5181.0178.6181.0橫撐2M4B-35302202190.1205.6197.2205.6橫撐2M4B-36202102190.1205.6197.2205.6橫撐2M4B-37402304-354.9-378.3-352.5-378.3斜桿3M3B-38302204-31.4-32.3-26.6-32.3斜桿3M3B-39102204-390.2-414.2-380.9-414.2斜桿3M3Z-011152150.00.00.00.0橫撐