中承式钢箱提篮拱桥拱肋安装施工技术

车田江大桥主桥为280 m中承式钢箱提篮拱，拱肋采用全焊钢箱结构，拱肋安装采用缆索吊装和斜拉扣挂工艺。通过介绍该桥拱肋节段悬臂拼装施工技术，如拱肋首节段采用定位支架精确定位，拱肋标准节段采用缆索吊机配合斜拉扣挂系统进行精确安装，合龙段通过持续观测、吊装姿态模拟及精确配切等技术实现了拱肋的顺利合龙，可为类似工程提供参考。     

U形肋正交异性组合桥面板构造参数分析

针对U形肋+平钢板+混凝土板形成的正交异性组合桥面板，利用Ansys空间有限元软件，对组合桥面板的U形肋尺寸、U形肋间距、横隔板间距、钢顶板厚度及混凝土板厚度等主要构造参数进行研究，提出U形肋正交异性组合桥面板的合理构造尺寸，为今后设计提供了有益的参考。     

UHPC-钢组合桥面板结构设计分析

以某全互通立交为工程背景，匝道曲线段采用钢-UHPC组合连续梁结构，通过MIDAS有限元仿真计算分析了UHPC-钢组合桥面板在车辆荷载作用下的受力性能，对比了不同加劲肋对组合桥面板第二体系应力的影响，得到了一些有价值的结论，可以为类似结构设计提供参考。     

武汉罗家港互通主桥总体设计

武汉罗家港互通主桥采用85 m下承式简支桁架拱，为双向6车道城市桥梁。桁架拱桥横向布置2片拱肋，间距29.4 m，拱肋矢高16.9 m，矢跨比为1/6；拱肋、系杆及腹杆均采用带板式加劲肋的焊接箱型截面，拱肋间设置3道箱型截面风撑；桥面系采用密布横梁的正交异性板；桥墩采用m型门式墩，基础采用钻孔灌注桩群桩；拱桥采用支架拼装、顶推施工。     

Influence of external restraint distribution on welding buckling of thin plate butt joint北大核心CSCD

［Objectives］It is easy to produce buckling distortion when welding thin plate butt joints, which affects the construction period, cost and performance, but this can be controlled by applying external restraints. ［Methods ］ First, a butt welding test of a thin plate under external restraints is carried out, and the out-of-plane deformation is measured by the optical surface scanning method. At the same time, finite element (FE) models in a free state and external restraint state are established, and the thermal mechanical phenomena of the two models are subjected to thermal-elastic-plastic FE analysis (TEP FE). The influence of different external restraint distributions on the welding buckling distortion of the joints is then studied, and reasons for controlling welding buckling distortion are analyzed from the perspective of longitudinal plastic strain and longitudinal contraction force.［Results ］ The out-of-plane deformation of the corresponding model is in good agreement with the measured results, and milder than the out-of-plane deformation of the model in a free state. When external restraints are applied, the longitudinal plastic strain of the weld and its adjacent metal decreases, and the longitudinal contraction force of the thin plate also decreases.［Conclusions ］ The results verify that external restraints can effectively control welding buckling distortion, and the control effects are different depending on the external restraint distribution. © 2023 Chinese Journal of Ship Research. All rights reserved.     

一种船体分段翻身架发明设计

针对用传统吊装翻身的方法吊装薄板立体分段的诸多弊端，设计一种船体分段翻身架，解决开放式薄板立体分段翻身变形问题，保证薄板立体分段的精度要求，特别适用于豪华邮船分段建造，同时适用于其他类型船舶分段的翻身。