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1、.二廣黃田綏江大橋主墩現(xiàn)澆支架牛腿設(shè)置方案在C30蓋梁兩側(cè)各預(yù)埋5塊44041520mm的A3鋼板,在鋼板上設(shè)置錨板和錨固鋼筋?,F(xiàn)針對 “牛腿應(yīng)檢算牛腿附近局部抗拉、抗壓強(qiáng)度等并采用有限元復(fù)核牛腿附近混凝土受力情況,是否造成局部混凝土破壞?!蔽覇挝焕胢idas軟件進(jìn)行了有限元分析計(jì)算。計(jì)算說明如下:a) 因?yàn)橐獧z算混凝土的下邊緣壓應(yīng)力(見應(yīng)力表中的Cb3(+y-z)和Cb4(-y-z)),所以在建立模型時(shí)將牛腿按預(yù)埋錨板的截面尺寸簡化為同截面鋼柱,檢算結(jié)果不影響混凝土的壓應(yīng)力。b) 牛腿外加力值按計(jì)算單中的橫梁支點(diǎn)反力最大值值定故。為了軟件分析方便、安全,所有的牛腿荷載力都按此力分布。c)

2、預(yù)埋件錨筋要通長布置,并加設(shè)箍筋進(jìn)行加強(qiáng),箍筋的布置按構(gòu)造筋布置;錨板下緣加鋼筋網(wǎng)進(jìn)行加強(qiáng)。d) 軟件計(jì)算畢竟是理想狀態(tài)控制,實(shí)際加載、施工中必須隨時(shí)觀測牛腿處的變化,有異常情況隨時(shí)處理。e) 模型單元中的牛腿最不利截面為1j-35i,3j-36i,7j-24j(跨中),18j-38i,20j-37i。f) 應(yīng)力表中,涂成黃色的數(shù)據(jù)屬于牛腿最不利截面處的應(yīng)力。g) 牛腿焊縫必須嚴(yán)格把關(guān)。將應(yīng)力表轉(zhuǎn)化為excel表,詳見如下:應(yīng)力表單元荷載位置Cb(min/max) (kPa)Cb1(-y+z) (kPa)Cb2(+y+z) (kPa)Cb3(+y-z) (kPa)Cb4(-y-z) (kPa)

3、1自重I230.00E+000.00E+000.00E+000.00E+000.00E+001自重J38-4.28E+004.28E+004.28E+00-4.28E+00-4.28E+002自重I24-7.20E+026.46E+026.46E+02-7.20E+02-7.20E+022自重J25-1.69E+029.52E+019.52E+01-1.69E+02-1.69E+023自重I25-1.69E+029.52E+019.52E+01-1.69E+02-1.69E+023自重J39-8.16E+01-8.16E+01-8.16E+017.80E+007.80E+004自重I26-1.

4、69E+02-1.69E+02-1.69E+029.48E+019.48E+014自重J27-3.61E+02-3.61E+02-3.61E+022.87E+022.87E+025自重I27-3.61E+02-3.61E+02-3.61E+022.87E+022.87E+025自重J28-5.03E+02-5.03E+02-5.03E+024.30E+024.30E+026自重I28-5.03E+02-5.03E+02-5.03E+024.30E+024.30E+026自重J29-5.96E+02-5.96E+02-5.96E+025.22E+025.22E+027自重I29-5.96E+02

5、-5.96E+02-5.96E+025.22E+025.22E+027自重J30-6.38E+02-6.38E+02-6.38E+025.64E+025.64E+028自重I21-5.87E+02-5.87E+02-1.68E+022.50E+02-1.68E+028自重J19-9.18E+02-9.18E+02-2.67E+023.84E+02-2.67E+029自重I19-9.18E+02-9.18E+02-2.67E+023.84E+02-2.67E+029自重J17-8.17E+02-8.17E+02-2.80E+022.58E+02-2.80E+0210自重I17-8.17E+02-

6、8.17E+02-2.80E+022.58E+02-2.80E+0210自重J15-7.16E+02-7.16E+02-2.92E+021.32E+02-2.92E+0211自重I15-7.16E+02-7.16E+02-2.92E+021.32E+02-2.92E+0211自重J13-6.15E+02-6.15E+02-3.05E+025.77E+00-3.05E+0212自重I13-6.15E+02-6.15E+02-3.05E+025.77E+00-3.05E+0212自重J11-5.14E+02-5.14E+02-3.17E+02-1.20E+02-3.17E+0213自重I11-5.

7、14E+02-5.14E+02-3.17E+02-1.20E+02-3.17E+0213自重J9-4.13E+02-4.13E+02-3.30E+02-2.46E+02-3.30E+0214自重I9-4.13E+02-4.13E+02-3.30E+02-2.46E+02-3.30E+0214自重J7-3.72E+02-3.12E+02-3.42E+02-3.72E+02-3.42E+0215自重I7-3.72E+02-3.12E+02-3.42E+02-3.72E+02-3.42E+0215自重J5-4.98E+02-2.11E+02-3.55E+02-4.98E+02-3.55E+0216自

8、重I5-4.98E+02-2.11E+02-3.55E+02-4.98E+02-3.55E+0216自重J3-6.24E+02-1.11E+02-3.67E+02-6.24E+02-3.67E+0217自重I3-6.24E+02-1.11E+02-3.67E+02-6.24E+02-3.67E+0217自重J1-7.50E+02-9.57E+00-3.80E+02-7.50E+02-3.80E+0218自重I370.00E+000.00E+000.00E+000.00E+000.00E+0018自重J41-4.28E+004.28E+004.28E+00-4.28E+00-4.28E+0019

9、自重I36-7.20E+026.46E+026.46E+02-7.20E+02-7.20E+0219自重J35-1.69E+029.52E+019.52E+01-1.69E+02-1.69E+02單元荷載位置Cb(min/max) (kPa)Cb1(-y+z) (kPa)Cb2(+y+z) (kPa)Cb3(+y-z) (kPa)Cb4(-y-z) (kPa)20自重I35-1.69E+029.52E+019.52E+01-1.69E+02-1.69E+0220自重J40-8.16E+01-8.16E+01-8.16E+017.80E+007.80E+0021自重I34-1.69E+02-1.

10、69E+02-1.69E+029.48E+019.48E+0121自重J33-3.61E+02-3.61E+02-3.61E+022.87E+022.87E+0222自重I33-3.61E+02-3.61E+02-3.61E+022.87E+022.87E+0222自重J32-5.03E+02-5.03E+02-5.03E+024.30E+024.30E+0223自重I32-5.03E+02-5.03E+02-5.03E+024.30E+024.30E+0223自重J31-5.96E+02-5.96E+02-5.96E+025.22E+025.22E+0224自重I31-5.96E+02-5.

11、96E+02-5.96E+025.22E+025.22E+0224自重J30-6.38E+02-6.38E+02-6.38E+025.64E+025.64E+0225自重I22-5.87E+022.50E+02-1.68E+02-5.87E+02-1.68E+0225自重J20-9.18E+023.84E+02-2.67E+02-9.18E+02-2.67E+0226自重I20-9.18E+023.84E+02-2.67E+02-9.18E+02-2.67E+0226自重J18-8.17E+022.58E+02-2.80E+02-8.17E+02-2.80E+0227自重I18-8.17E+0

12、22.58E+02-2.80E+02-8.17E+02-2.80E+0227自重J16-7.16E+021.32E+02-2.92E+02-7.16E+02-2.92E+0228自重I16-7.16E+021.32E+02-2.92E+02-7.16E+02-2.92E+0228自重J14-6.15E+025.77E+00-3.05E+02-6.15E+02-3.05E+0229自重I14-6.15E+025.77E+00-3.05E+02-6.15E+02-3.05E+0229自重J12-5.14E+02-1.20E+02-3.17E+02-5.14E+02-3.17E+0230自重I12-

13、5.14E+02-1.20E+02-3.17E+02-5.14E+02-3.17E+0230自重J10-4.13E+02-2.46E+02-3.30E+02-4.13E+02-3.30E+0231自重I10-4.13E+02-2.46E+02-3.30E+02-4.13E+02-3.30E+0231自重J8-3.72E+02-3.72E+02-3.42E+02-3.12E+02-3.42E+0232自重I8-3.72E+02-3.72E+02-3.42E+02-3.12E+02-3.42E+0232自重J6-4.98E+02-4.98E+02-3.55E+02-2.11E+02-3.55E+0

14、233自重I6-4.98E+02-4.98E+02-3.55E+02-2.11E+02-3.55E+0233自重J4-6.24E+02-6.24E+02-3.67E+02-1.11E+02-3.67E+0234自重I4-6.24E+02-6.24E+02-3.67E+02-1.11E+02-3.67E+0234自重J2-7.50E+02-7.50E+02-3.80E+02-9.57E+00-3.80E+0235自重I38-4.28E+004.28E+004.28E+00-4.28E+00-4.28E+0035自重J24-1.07E+021.07E+021.07E+02-1.07E+02-1.0

15、7E+0236自重I39-8.16E+01-8.16E+01-8.16E+017.80E+007.80E+0036自重J26-1.69E+02-1.69E+02-1.69E+029.48E+019.48E+0137自重I40-8.16E+01-8.16E+01-8.16E+017.80E+007.80E+0037自重J34-1.69E+02-1.69E+02-1.69E+029.48E+019.48E+0138自重I414.28E+004.28E+004.28E+00-4.28E+00-4.28E+0038自重J361.07E+021.07E+021.07E+02-1.07E+02-1.07E

16、+02單元荷載位置Cb(min/max) (kPa)Cb1(-y+z) (kPa)Cb2(+y+z) (kPa)Cb3(+y-z) (kPa)Cb4(-y-z) (kPa)1橫梁反力I230.00E+000.00E+000.00E+000.00E+000.00E+001橫梁反力J380.00E+000.00E+000.00E+000.00E+000.00E+002橫梁反力I240.00E+000.00E+000.00E+000.00E+000.00E+002橫梁反力J25-4.28E+004.28E+004.28E+00-4.28E+00-4.28E+003橫梁反力I25-7.20E+026.

17、46E+026.46E+02-7.20E+02-7.20E+023橫梁反力J39-1.69E+029.52E+019.52E+01-1.69E+02-1.69E+024橫梁反力I26-1.69E+029.52E+019.52E+01-1.69E+02-1.69E+024橫梁反力J27-8.16E+01-8.16E+01-8.16E+017.80E+007.80E+005橫梁反力I27-1.69E+02-1.69E+02-1.69E+029.48E+019.48E+015橫梁反力J28-3.61E+02-3.61E+02-3.61E+022.87E+022.87E+026橫梁反力I28-3.61

18、E+02-3.61E+02-3.61E+022.87E+022.87E+026橫梁反力J29-5.03E+02-5.03E+02-5.03E+024.30E+024.30E+027橫梁反力I29-5.03E+02-5.03E+02-5.03E+024.30E+024.30E+027橫梁反力J30-5.96E+02-5.96E+02-5.96E+025.22E+025.22E+028橫梁反力I21-5.96E+02-5.96E+02-5.96E+025.22E+025.22E+028橫梁反力J19-6.38E+02-6.38E+02-6.38E+025.64E+025.64E+029橫梁反力I1

19、9-5.87E+02-5.87E+02-1.68E+022.50E+02-1.68E+029橫梁反力J17-9.18E+02-9.18E+02-2.67E+023.84E+02-2.67E+0210橫梁反力I17-9.18E+02-9.18E+02-2.67E+023.84E+02-2.67E+0210橫梁反力J15-8.17E+02-8.17E+02-2.80E+022.58E+02-2.80E+0211橫梁反力I15-8.17E+02-8.17E+02-2.80E+022.58E+02-2.80E+0211橫梁反力J13-7.16E+02-7.16E+02-2.92E+021.32E+02

20、-2.92E+0212橫梁反力I13-7.16E+02-7.16E+02-2.92E+021.32E+02-2.92E+0212橫梁反力J11-6.15E+02-6.15E+02-3.05E+025.77E+00-3.05E+0213橫梁反力I11-6.15E+02-6.15E+02-3.05E+025.77E+00-3.05E+0213橫梁反力J9-5.14E+02-5.14E+02-3.17E+02-1.20E+02-3.17E+0214橫梁反力I9-5.14E+02-5.14E+02-3.17E+02-1.20E+02-3.17E+0214橫梁反力J7-4.13E+02-4.13E+02

21、-3.30E+02-2.46E+02-3.30E+0215橫梁反力I7-4.13E+02-4.13E+02-3.30E+02-2.46E+02-3.30E+0215橫梁反力J5-3.72E+02-3.12E+02-3.42E+02-3.72E+02-3.42E+0216橫梁反力I5-3.72E+02-3.12E+02-3.42E+02-3.72E+02-3.42E+0216橫梁反力J3-4.98E+02-2.11E+02-3.55E+02-4.98E+02-3.55E+0217橫梁反力I3-4.98E+02-2.11E+02-3.55E+02-4.98E+02-3.55E+0217橫梁反力J1

22、-6.24E+02-1.11E+02-3.67E+02-6.24E+02-3.67E+0218橫梁反力I37-6.24E+02-1.11E+02-3.67E+02-6.24E+02-3.67E+0218橫梁反力J41-7.50E+02-9.57E+00-3.80E+02-7.50E+02-3.80E+0219橫梁反力I360.00E+000.00E+000.00E+000.00E+000.00E+0019橫梁反力J35-4.28E+004.28E+004.28E+00-4.28E+00-4.28E+0020橫梁反力I35-7.20E+026.46E+026.46E+02-7.20E+02-7.

23、20E+0220橫梁反力J40-1.69E+029.52E+019.52E+01-1.69E+02-1.69E+02單元荷載位置Cb(min/max) (kPa)Cb1(-y+z) (kPa)Cb2(+y+z) (kPa)Cb3(+y-z) (kPa)Cb4(-y-z) (kPa)21橫梁反力I34-1.69E+029.52E+019.52E+01-1.69E+02-1.69E+0221橫梁反力J33-8.16E+01-8.16E+01-8.16E+017.80E+007.80E+0022橫梁反力I33-1.69E+02-1.69E+02-1.69E+029.48E+019.48E+0122橫

24、梁反力J32-3.61E+02-3.61E+02-3.61E+022.87E+022.87E+0223橫梁反力I32-3.61E+02-3.61E+02-3.61E+022.87E+022.87E+0223橫梁反力J31-5.03E+02-5.03E+02-5.03E+024.30E+024.30E+0224橫梁反力I31-5.03E+02-5.03E+02-5.03E+024.30E+024.30E+0224橫梁反力J30-5.96E+02-5.96E+02-5.96E+025.22E+025.22E+0225橫梁反力I22-5.96E+02-5.96E+02-5.96E+025.22E+0

25、25.22E+0225橫梁反力J20-6.38E+02-6.38E+02-6.38E+025.64E+025.64E+0226橫梁反力I20-5.87E+022.50E+02-1.68E+02-5.87E+02-1.68E+0226橫梁反力J18-9.18E+023.84E+02-2.67E+02-9.18E+02-2.67E+0227橫梁反力I18-9.18E+023.84E+02-2.67E+02-9.18E+02-2.67E+0227橫梁反力J16-8.17E+022.58E+02-2.80E+02-8.17E+02-2.80E+0228橫梁反力I16-8.17E+022.58E+02-

26、2.80E+02-8.17E+02-2.80E+0228橫梁反力J14-7.16E+021.32E+02-2.92E+02-7.16E+02-2.92E+0229橫梁反力I14-7.16E+021.32E+02-2.92E+02-7.16E+02-2.92E+0229橫梁反力J12-6.15E+025.77E+00-3.05E+02-6.15E+02-3.05E+0230橫梁反力I12-6.15E+025.77E+00-3.05E+02-6.15E+02-3.05E+0230橫梁反力J10-5.14E+02-1.20E+02-3.17E+02-5.14E+02-3.17E+0231橫梁反力I10-5.14E+02-1.20E+02-3.17E+02

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