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1.
钢吊箱围堰是桥梁深水基础施工的重要设施,本文结合福州鼓山大桥的施工,介绍钢吊箱围堰的设计方法和关键施工技术。  相似文献   

2.
星海湾跨海大桥项目应用的"铁模板式"钢吊箱围堰,在确保承台施工质量和降低安全风险的同时,最大限度的降低钢吊箱施工成本,并针对特殊海况采取了诸多行之有效的加固措施,成效显著。  相似文献   

3.
陈瑞 《华章》2012,(27)
本文以某跨海大桥(起止里程为6250m,基础均为钻孔桩基础、圆形承台)在滩涂区设置围堰为例,利用MIDAS简便建模,从吊箱围堰的组成、施工流程、检验设计计算等方面论述了吊箱围堰的施工设计.  相似文献   

4.
泸州长江大桥主桥基础施工方案的比选   总被引:1,自引:0,他引:1  
结合泸州长江铁路大桥水中墩基础的水文地质情况,介绍大桥深水基础施工常用的双壁钢围堰、吊箱围堰两种防水结构的方案比选,特别是3#墩在岩面高差达13.5m的情况下,采用外置钢插板的施工方案,可供同类桥梁参考。  相似文献   

5.
南京大胜关长江大桥主桥4^#墩承台采用双壁钢吊箱围堰施工,介绍底节钢围堰分块拼装、气囊法下水、浮运就位、吊装下沉施工方法。  相似文献   

6.
南京大胜关长江大桥主桥4^#墩承台采用双壁钢吊箱围堰施工,介绍底节钢围堰分块拼装、气囊法下水、浮运就位、吊装下沉施工方法。  相似文献   

7.
阐述三门海大桥用有底钢吊箱修建深水高桩承台的设计与施工要点,总结出深水高桩承台的干作业施工技术及注意事项,既可保证工程质量,又节省时间和费用,有一定的经济、社会效益。  相似文献   

8.
阐述三门海大桥用有底钢吊箱修建深水高桩承台的设计与施工要点,总结出深水高桩承台的干作业施工技术及注意事项,既可保证工程质量,又节省时间和费用,有一定的经济、社会效益。  相似文献   

9.
苍山如海     
七月流火,我怀着观奇、览胜的心情,在太阳还未露面的一天早上,踏上了进入苍山的最佳入口——吊箱索道。所谓的“吊箱索道”,其实就是缆车。在南宁的青秀山风景区我见过,这回终于亲身经历啦。吊箱  相似文献   

10.
在集装箱桥吊自动化作业系统设计中,桥吊在自动装卸箱过程中抓放箱的精度问题是必须解决的。针对国内外对该类问题研究解决的方式,分析了自动对箱技术、模糊控制PID和神经网络PID等几种方式,基于桥吊的实际应用分析它们的优点与不足之处,进而提出两种方案,即将无模型自适应控制和机器学习运用到集装箱桥吊控制系统中,结合分析上述两种技术的特性与优点,为后续设计仿真实验研究得到更为有效的解决方案提供理论基础。  相似文献   

11.
四川雅砻江卡拉至杨房沟水电站交通专用公路洪水沟大桥上部结构为2跨T型钢构桥。施工中采用挂蓝施工工艺,缆索吊吊运箱梁混凝土,塔吊配合缆索吊吊运钢材、设备,顺利地完成箱梁施工任务,保证工程质量,加快施工进度。该技术对其他类似工程具有借鉴作用。  相似文献   

12.
A 3D finite element model for the Taizhou Yangtze River Bridge, the first triple-tower long-span suspension bridge in China, is established based on the nonlinear finite element software ABAQUS, and the dynamic characteristics of the bridge are analyzed using the LANCZOS eigenvalue solution method. The study focuses on the effects of the vertical, lateral and torsional stiffness of the steel box girder, the rigid central buckle and the elastic restraints connecting the towers and the steel box girder on the dynamic characteristics of the triple-tower suspension bridge. Our results show that, in general, the dynamic characteristics of the triple-tower suspension bridge are similar to those of two-tower suspension bridges. The vertical, lateral and torsional stiffness of the steel box girder have different effects on the dynamic characteristics of triple-tower suspension bridges. The elastic restraints have a more significant effect on the dynamic characteristics than the central buckle, and decreasing the stiffness of the elastic restraints results in the appearance of a longitudinal floating vibration mode of the bridge. Also, rigid central buckles have a greater influence on the dynamic characteristics of triple-tower suspension bridges than on those of two-tower suspension bridges. The results obtained could serve as a valuable numerical reference for analyzing and designing super-long-span triple- tower suspension bridges.  相似文献   

13.
ANSYS非线性有限元软件在桥梁结构分析中的应用   总被引:1,自引:0,他引:1       下载免费PDF全文
有限无法是分析复杂工程结构的一种非常有效的数值方法.本文通过叙述采用ANSYS进行钢箱梁结构分析的实施步骤,介绍了使用ANSYS非线性有限元软件进行桥梁结构分析的方法.  相似文献   

14.
Steel fenders are increasingly used for ship-impact resistance structures in the design of navigable bridges. As an important approach to investigating this anti-impact structure effectiveness to reduce influences of vessel impact, simulation analyses are still not perfect yet. So this paper is intended to discuss several issues related to ship collision simulations, including steel constitutive relationship, connections between steel box and pile cap, contacts definition and friction consideration, and the determination of impact waterlines and angles. Consequently based on two examples of ship-steel fender-bridge structure systems, some conclusions about effectiveness and design of fenders to reduce ship impact are drawn.  相似文献   

15.
Steel fenders are increasingly used for ship-impact resistance structures in the design of navigable bridges. As an important approach to investigating this anti-impact structure effectiveness to reduce influences of vessel impact, simulation analyses are still not perfect yet. So this paper is intended to discuss several issues related to ship collision simulations, including steel constitutive relationship, connections between steel box and pile cap, contacts definition and friction consideration, and the determination of impact waterlines and angles. Consequently based on two examples of ship-steel fender-bridge structure systems, some conclusions about effectiveness and design of fenders to reduce ship impact are drawn.  相似文献   

16.
钢-混凝土组合箱梁日照温差的实测和理论分析(英文)   总被引:2,自引:0,他引:2  
为了探讨和验证钢-混凝土组合截面日照温度场的计算方法, 依托某大跨径三跨变截面连续箱梁桥, 对钢-混凝土组合箱梁的日照温度场进行了现场实测. 通过实测发现, 由于各腹板接受太阳漫散射的程度不同, 外侧钢梁温度普遍高于内侧箱梁, 且钢箱的整体平均温度数值与箱内空气基本吻合. 在此基础上借助ANSYS有限元计算软件, 根据不同位置钢腹板所处环境条件确定了各自的太阳辐射和对流换热情况, 进行了综合边界条件的瞬态热分析. 各测点理论计算结果与实测数据能较好地吻合, 温度差值在2℃以内, 说明了理论计算方法的可靠性, 为后续深入研究钢-混凝土组合截面日照温度场奠定了基础.  相似文献   

17.
针对双杆或四杆的组合式钢管杆,采用大吨位吊车进行吊装。重点介绍了大吨位吊车型号的选择,构件吊点位置的确定,吊具的设计和吊装施工方法。通过220kV越溪—菀平线开断环入江城变工程的施工实践,表明采用大吨位吊车分解吊装组合式钢管杆具有经济实用、施工效率高、工器具少、安全可靠等优点,值得在输电线路施工中推广应用。  相似文献   

18.
本文介绍采用单电机双联泵控制多油缸动作如何进行防干扰问题,采用立体建模使液压站板块内部结构简单,直观性强,绘制生产图纸容易。改进后的组机节能、高效、维修方便。  相似文献   

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