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浙江大学学报(工学版)
浙江大学学报(工学版)  2023, Vol. 57 Issue (9): 1697-1705    DOI: 10.3785/j.issn.1008-973X.2023.09.001
土木工程、水利工程     
基于几何控制法的钢箱梁制造尺寸计算
李立峰1(),郑舜航1,李积泉2,路云强3,蒋启昊1
1. 湖南大学 土木工程学院，湖南 长沙 410082
2. 佛山市交通投资集团有限公司，广东 佛山 528000
3. 中铁大桥局集团有限公司，武汉 湖北 430000
Calculation of manufacturing dimensions of steel box girders based on geometric control method
Li-feng LI1(),Shun-hang ZHENG1,Ji-quan LI2,Yun-qiang LU3,Qi-hao JIANG1
1. College of Civil Engineering, Hunan University, Changsha 410082, China
2. Foshan Communications Investment Group Limited Company, Foshan 528000, China
3. China Railway Major Bridge Engineering Group Limited Company, Wuhan 430000, China
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摘要：

钢箱梁制造尺寸的计算是确保大跨非对称混合梁桥整体吊装顺利合龙、成桥线形满足设计要求的关键. 基于几何控制法，以四跨非对称混合体系梁桥为研究对象，以匹配断面平行对接为控制依据，提出倾角补偿的方法. 计算钢箱梁端面的制造倾角，提出顶、底面配切长度的计算方法，确定钢箱梁制造尺寸. 结果表明：钢箱梁整体吊装顺利，第一主跨合龙时2个匹配断面顶、底板相对缝宽分别为8、5 mm，第二主跨的相对缝宽分别为2、5 mm，各个匹配断面的相对缝宽均小于设计限值15 mm，实现了平行对接；合龙后实测主梁线形平顺，最大标高误差不超过3 cm，验证了钢箱梁制造尺寸计算方法的准确性和适用性.
关键词： 非对称混合梁;  几何控制;  制造尺寸;  平行对接;  整体吊装    
Abstract:

The calculation of the manufacturing dimensions of steel box girder is the key to ensure the smooth closure of the whole hoisting of the long-span asymmetric hybrid girder bridge and to meet the design requirements. A method of angle compensation based on the geometric control method was proposed, taking a four-span asymmetric hybrid girder bridge as the research object and matching the end face parallel docking as the control basis. The manufacturing angle of the end face of steel box girder was calculated, and a calculation method of the cutting length of the top and bottom surfaces was proposed to determine the manufacturing dimensions of steel box girder. Results showed that the steel box girder was successfully hoisted. When the first main span was closed, the relative seam widths of the top and bottom plates of the two matching faces were 8 and 5 mm respectively, while the widths second main span were 2 and 5 mm respectively. The width of each matching face was less than the design limit of 15 mm, and the parallel butt was realized. The linear shape of the main beam measured after closing was smooth, and the maximum elevation error was less than 3 cm, which verified the accuracy and the applicability of the calculation method of the manufacturing dimensions of steel box girder.
Key words: asymmetric hybrid girder    geometric control    manufacturing dimension    parallel docking    integral hoisting
收稿日期: 2022-11-28 出版日期: 2023-10-16
CLC:  U 445.4  
基金资助: 国家自然科学基金资助项目（51978257, 52278176）
作者简介: 李立峰（1971—），男，教授，博士，从事大跨桥梁、超高性能混凝土桥梁分析理论研究. orcid.org/0000-0002-8139-9660.E-mail： lilifeng@hnu.edu.com
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李立峰
郑舜航
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路云强
蒋启昊

引用本文:

李立峰,郑舜航,李积泉,路云强,蒋启昊. 基于几何控制法的钢箱梁制造尺寸计算[J]. 浙江大学学报(工学版), 2023, 57(9): 1697-1705.

Li-feng LI,Shun-hang ZHENG,Ji-quan LI,Yun-qiang LU,Qi-hao JIANG. Calculation of manufacturing dimensions of steel box girders based on geometric control method. Journal of ZheJiang University (Engineering Science), 2023, 57(9): 1697-1705.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2023.09.001    或    https://www.zjujournals.com/eng/CN/Y2023/V57/I9/1697

桥名 桥型 l/m h/m D/m m/t
石板坡长江大桥 连续刚构 330 4.5 108 1400
福州马尾大桥 连续梁 240 3.8~4.2 96 1184
宁杭高铁下穿桥 连续梁 180 4.1 88 900
小榄水道桥 连续刚构 220 3.6 87 800
瓯江大桥 连续刚构 200 3.5 80 660
无锡京杭运河桥 连续梁 100 2.5 47 220
表 1  国内已建成混合体系梁式桥统计
图 1  混合体系梁式桥总体布置图
图 2  混凝土梁截面
图 3  钢箱梁截面
图 4  非对称合龙的典型施工工序
典型工序 Δua/mm Δub/mm Δuc/mm Δud/mm Δva/mm Δvb/mm Δvc/mm Δvd/mm βa/(°) βb/(°) βc/(°) βd/(°)
Ⅰ 0.0 ?16.2 ?16.1 0.0 0.0 +42.9 ?61.4 0.0 — ?0.064 ?0.072 —
Ⅱ ?22.4 +35.9 +32.1 0.0 ?98.8 ?130.9 +86.3 0.0 ?0.129 +0.138 +0.074 —
Ⅲ +6.1 +5.9 +6.8 0.0 ?5.9 ?14.1 +27.1 0.0 — — +0.042 —
Ⅳ ?22.8 ?24.2 ?25.1 +13.1 +22.2 +49.3 ?102.8 ?79.7 — — ?0.112 +0.108
表 2  吊装时主梁形心轴变形增量
图 5  钢箱梁现场吊装情况
图 6  匹配断面关键参数
图 7  基于几何控制法的施工控制流程框架
图 8  合龙口平行匹配对接
图 9  顶、底板配切长度的计算
匹配断面 ${a_i}$/(°) ${\;\beta _i}$/(°) ${\;\beta _j}$/(°) $\theta $/(°) ${h_{\rm{T}}}$/mm ${h_{\rm{B}}}$/mm $\Delta {u_{\rm{T}}}$/mm $\Delta {u_{\rm{B}}}$/mm $\varepsilon $/mm
a +0.108 ?0.129 ?0.154 +0.140 1603 2597 ?26.0 ?16.5 +15.0
b ?0.152 +0.138 +0.154 ?0.172 1603 2597 +38.7 +29.6 +30.0
c +0.120 ?0.112 ?0.154 +0.162 1603 2597 ?28.2 ?20.0 +15.0
d ?0.112 +0.108 +0.154 ?0.158 1603 2597 +16.1 +8.2 +30.0
表 3  尺寸修正参数计算结果
mm
钢箱梁 ${D_{\rm{T}}}$ ${D_{\rm{B}}}$ ${L_{\rm{T}}'}$ ${L_{\rm{B}}'}$ ${L_{\rm{T}}}$ ${L_{\rm{B}}}$
3#-4# 75086 75079 ?79 ?105 75007 74974
2#-3# 75084 75075 ?81 ?89 75003 74986
表 4  制造尺寸计算结果
图 10  钢箱梁制造线形结果
图 11  钢箱梁入槽情况
mm
匹配断面 ${\varepsilon _{\rm{T}}}$ ${\varepsilon _{\rm{B}}}$ $\Delta \varepsilon $
a 12 20 8
b 30 35 5
c 18 20 2
d 35 40 5
表 5  入槽缝宽实测结果
图 12  主梁成桥线形实测结果
图 13  主梁高程误差
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