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浙江大学学报(工学版)
浙江大学学报(工学版)  2022, Vol. 56 Issue (3): 550-557    DOI: 10.3785/j.issn.1008-973X.2022.03.014
土木工程、水利工程     
分阶段施工中钢箱梁制造参数的通用计算方法
汪劲丰1(),杨松伟1,亢阳阳2,向华伟1
1. 浙江大学 建筑工程学院，浙江 杭州 310058
2. 富源县交通运输局，云南 曲靖 655500
General calculation method for manufacturing parameters of steel box girder in staged construction
Jin-feng WANG1(),Song-wei YANG1,Yang-yang KANG2,Hua-wei XIANG1
1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
2. Fuyuan County Transportation Bureau, Qujing 655500, China
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摘要：

为了精确计算分阶段施工中钢箱梁制造参数，形成简便统一的求解思路，基于安装时节段间交界面实现平顺对接的思想，直接根据结构累计位移确定已安装、待安装节段桥位现场的相对位置关系，以设计成桥状态下节段形心处梁长为基准，提出分阶段施工钢箱梁桥节段间制造夹角、顶底板长度制造参数的通用计算方法. 将该方法应用于三跨钢箱连续梁桥大节段吊装施工，准确计算各小节段钢箱梁制造参数，并精准修正大节段接缝处顶底板加工长度. 结果表明：制造完成后各小节段钢箱梁交界面焊缝宽度均匀一致，现场安装时大节段钢箱梁端面实现精准匹配，合龙后主梁线形与设计线形吻合良好，验证了所提方法的正确性.
关键词： 桥梁结构;  分阶段施工;  钢箱梁;  制造参数;  通用计算方法    
Abstract:

In order to accurately calculate the manufacturing parameters of steel box girder in staged construction and form a simple and unified solution idea, a general calculation method for manufacturing parameters of the steel box girder bridge such as the manufacturing angle between the segments and the length of the top and bottom plates was proposed, based on the idea of achieving smooth butt joints at the interface of the sections during installation. This method determines the relative positional relationship between the installed section and the section to be installed at the bridge site directly according to the cumulative displacement of the structure, and takes the girder length at the centroid of the segment under design finished bridge state as the datum length. It was applied to a three-span steel box continuous girder bridge constructed by large-segment hoisting method. The manufacturing parameters of each small-segment steel box girder were accurately calculated, and the processing length of the top and bottom plates at the joints of the large-segment steel box girder was accurately corrected. The results show that the welding seam width at the interface of small-segment steel box girder is uniform and consistent after manufacturing, the end faces of the large-segment steel box girder were accurately matched during on-site installation, and the alignment of main girder after closuring is in good agreement with the design alignment, which verify the correctness of the proposed method.
Key words: bridge structure    staged construction    steel box girder    manufacturing parameters    general calculation method
收稿日期: 2021-04-29 出版日期: 2022-03-29
CLC:  U 44  
基金资助: 国家自然科学基金资助项目（51878603）
作者简介: 汪劲丰（1976—），男，教授，从事桥梁施工方法及控制技术的研究. orcid.org/0000-0002-9099-818X. E-mail： wangjinfeng@zju.edu.cn
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汪劲丰
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引用本文:

汪劲丰,杨松伟,亢阳阳,向华伟. 分阶段施工中钢箱梁制造参数的通用计算方法[J]. 浙江大学学报(工学版), 2022, 56(3): 550-557.

Jin-feng WANG,Song-wei YANG,Yang-yang KANG,Hua-wei XIANG. General calculation method for manufacturing parameters of steel box girder in staged construction. Journal of ZheJiang University (Engineering Science), 2022, 56(3): 550-557.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2022.03.014    或    https://www.zjujournals.com/eng/CN/Y2022/V56/I3/550

图 1  分阶段施工中节段制造状态的确定
图 2  节段间制造夹角的计算
图 3  节段间制造夹角与中性轴夹角的关系
图 4  节段顶底板长度修正
图 5  设计成桥状态下形心处梁长计算
图 6  三跨连续梁桥跨径布置
图 7  钢箱梁节段划分图
图 8  连续梁桥有限元模型
节段 $H_i^{\text{D}}$/m $\Delta _i^{\text{D}}$/mm ${L_{i,{\text{p}}}}$/m ${\theta _{i - 1,{{z} } } }$/(°) $\delta _{i - 1,i}^0$/(°) ${\xi _{i - 1,i}}$/(°) ${h_{i - 1,{\text{t}}}}$/mm ${h_{i - 1,{\text{b}}}}$/mm ${d_{i - 1,{\text{t}}}}$/mm ${d_{i - 1,{\text{b}}}}$/mm
0# 37.332 ?3.0 — — — — — — — —
1# 37.614 61.4 14.1 1.407 — — — — — —
2# 37.840 108.1 15.0 1.041 ?0.283 ?0.083 1573.1 2926.9 2.3 ?4.2
3# 38.090 119.3 12.5 1.197 0.283 -0.127 1647.2 2852.8 3.7 ?6.3
4# 38.417 105.4 12.5 1.438 0.357 ?0.115 1647.2 2852.8 3.3 -5.7
5# 38.590 71.7 12.5 0.635 ?0.713 ?0.090 1569.4 2930.6 2.5 ?4.6
6# 38.650 31.9 12.5 0.096 ?0.511 ?0.028 1647.2 2852.8 0.8 ?1.4
7# 38.642 7.0 10.0 ?0.188 ?0.324 0.040 1836.4 3170.2 ?1.3 2.2
8# 38.544 ?4.7 10.0 ?0.632 ?0.519 0.075 2044.4 3495.6 ?2.7 4.6
9# 38.439 ?2.8 7.5 ?0.785 ?0.236 0.082 2343.0 3730.3 ?3.4 5.3
10# 38.559 14.3 6.0 1.309 1.946 0.149 2597.8 3875.5 ?6.7 10.0
11# 38.964 55.3 7.5 3.401 1.946 0.147 2597.8 3875.5 -6.6 9.9
12# 39.462 124.9 10.0 3.251 ?0.236 0.085 2343.0 3730.3 ?3.5 5.6
13# 39.870 207.9 10.0 2.811 ?0.519 0.078 2044.4 3495.6 ?2.8 4.8
14# 40.156 319.6 12.5 1.822 ?1.026 0.038 1836.4 3170.2 ?1.2 2.1
表 1  小节段钢箱梁顶底板长度修正量（第1跨大节段）
节段 $H_{i{{ - } }1}^{\text{E} }$/m $ H_i^{\text{E}} $/m $\varDelta _{i - 1}^i$/mm $\varDelta _i^i$/mm ${L_{i,{\text{p}}}}$/m $\delta _{i - 1,i}^0$/(°)　 ${\xi' _{i - 1,i} }$/(°) ${h_{i - 1,{\text{t}}}}$/mm　 ${h_{i - 1,{\text{b}}}}$/mm　 ${d'_{i - 1,{\text{t} } } }$/mm　 ${d'_{i - 1,{\text{b} } } }$/mm　
14# 40.078 40.476 ?166.8 ?255.2 12.5 — — — — — —
15# 40.589 40.998 ?368.1 ?395.0 12.5 0.3507 ?0.0207 1800.4 2699.6 0.7 ?1.0
19# 41.778 41.871 ?395.8 ?369.5 12.5 — — — — — —
20# 41.766 41.865 ?265.6 ?174.0 12.5 0.3507 ?0.0206 1800.4 2699.6 0.6 ?1.0
表 2  大节段接缝处顶底板长度修正量
图 9  大节段端面精确匹配
图 10  主梁高程误差
mm
钢箱梁节段 ${l_{\text{N}}}$ ${l_{\text{m}}}$ ${l_{\text{t}}}$ ${l_{\text{b}}}$ $\Delta l$
第1跨大节段 152 654.6 152 664.9 152 678.3 152 655.5 23.7
第2跨大节段 64 013.8 64 014.9 64 001.8 64 034.5 20.7
第3跨大节段 151 205.4 151 211.7 151 217.0 151 189.8 15.6
全桥钢箱梁节段 367 873.8 367 891.4 367 897.1 367 879.8 23.3
表 3  配切后主梁形心处长度
图 11  常用方法节段配切基准长度
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