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1、30m預(yù)制箱梁鋼絞線伸長(zhǎng)量計(jì)算書(shū)揚(yáng)州沿江高等級(jí)公路D9標(biāo)夾江特大橋30m預(yù)制箱梁橋梁鋼絞線伸長(zhǎng)量計(jì)算書(shū)施工-1-二處揚(yáng)州沿江高等級(jí)公路D9標(biāo)夾江特大橋一、中跨N1束鋼絞線從《揚(yáng)州沿江公路二期工程D9標(biāo)段夾江特大橋(K62+564.500－K63+625.500)施工圖設(shè)計(jì)第二冊(cè)》，圖號(hào)為YYE-QH-S5-3-122查得N1束鋼絞線2束4股下料長(zhǎng)度為30.91m,結(jié)合我處實(shí)際情況取N1束鋼絞線計(jì)算長(zhǎng)度為（30.91-0.65）÷2=15.13m㈠、10％σK時(shí)N1束鋼絞線伸長(zhǎng)量P=10%×1395×140=19530NPN1=
2、19530×4=78.12KN△L=Pp×L÷Ap×EpPp=P(1-e-(kx+uθ))÷(kx+uθ)=19530×(1-e-(0.0015×15.13+0.25×7.5×π÷180))÷(0.0015×15.13+0.25×7.5×π÷180)=19530×0.972773233=18998N△L=18998×15160÷(140×1.95×105)=10.55mm△L１=10.55×2=21.1mm㈡、20％σK時(shí)N1束鋼絞線伸長(zhǎng)量P=20%×1395×140=39060NPN1=39060×4=156.24KN同樣方
3、法可計(jì)算得△L１＝21.1×2=42.2mm-2-㈢、100％σK時(shí)N1束鋼絞線伸長(zhǎng)量P=100%×1395×140=195300NPN1=195300×4=781.2KN△L=Pp×L÷Ap×EpPp=P(1-e-(kx+uθ))÷(kx+uθ)=195300×(1-e-(0.0015×15.16+0.25×7.5×π÷180))÷(0.0015×15.16+0.25×7.5×π÷180)=195300×0.972773233=189982.6N△L=189982.6×15160÷(140×1.95×105)=105.5mm
4、△L１=(△L-6)×2=(105.5-6)×2=199mm二、中跨N2束鋼絞線從《揚(yáng)州沿江公路二期工程D9標(biāo)段夾江特大橋(K62+564.500－K63+625.500)施工圖設(shè)計(jì)第二冊(cè)》，圖號(hào)為YYE-QH-S5-3-122查得N2束鋼絞線2束4股下料長(zhǎng)度為30.88m,結(jié)合我處實(shí)際情況取N2束鋼絞線計(jì)算長(zhǎng)度為（30.88-0.5）÷2=15.19m㈠、10％σK時(shí)N2束鋼絞線伸長(zhǎng)量P=10%×1395×140=19530NPN2=19530×4=78.12KN△L=Pp×L÷Ap×EpPp=P(1-e-(kx+uθ))÷
5、(kx+uθ)=19530×(1-e-(0.0015×15.19+0.25×7.5×π÷180))÷(0.0015×15.19+0.25×7.5×-3-π÷180)=19530×0.972751556=18997.8N△L=18997.8×15190÷(140×1.95×105)=10.6mm△L2=10.6×2=21.2mm㈡、20％σK時(shí)N2束鋼絞線伸長(zhǎng)量P=20%×1395×140=39060NPN2=39060×4=156.24KN同樣方法可計(jì)算得△L2＝21.1×2=42.2mm㈢、100％σK時(shí)N2束鋼絞線伸長(zhǎng)量P
6、=100%×1395×140=195300NPN2=195300×4=781.2KN△L=Pp×L÷Ap×EpPp=P(1-e-(kx+uθ))÷(kx+uθ)=195300×(1-e-(0.0015×15.19+0.25×7.5×π÷180))÷(0.0025×15.19+0.25×7.5×π÷180)=195300×0.972751556=189978.4N△L=189978.4×15190÷(140×1.95×105)=105.7mm△L2=(△L-6)×2=(105.7-6)×2=199mm三、中跨N3束鋼絞線-4-從
7、《揚(yáng)州沿江公路二期工程D9標(biāo)段夾江特大橋(K62+564.500－K63+625.500)施工圖設(shè)計(jì)第二冊(cè)》，圖號(hào)為YYE-QH-S5-3-122查得N3束鋼絞線2束4股下料長(zhǎng)度為30.95m,結(jié)合我處實(shí)際情況取N3束鋼絞線計(jì)算長(zhǎng)度為（30.95-0.5）÷2=15.225m㈠、10％σK時(shí)N3束鋼絞線伸長(zhǎng)量P=10%×1395×140=19530NPN3=19530×4=78.12KN△L=Pp×L÷Ap×EpPp=P(1-e-(kx+uθ))÷(kx+uθ)=19530×(1-e-(0.0015×15.225+0.25×7
8、.5×π÷180))÷(0.0015×15.225+0.25×7.5×π÷180)=19530×0.972726258=18997.3N△L=18997.3×15225÷(140×1.95×105)=10.6mm△L3=10.6×2=21.2mm㈡、20％σK時(shí)N3束鋼絞線伸
