系杆拱桥的施工监控研究
发布时间：2018-12-20 06:51
【摘要】：在新建铁路兰州至重庆线上的接驾咀特大桥是一座跨度为96m的钢管混凝土系杆拱桥。本文以此拱桥为工程背景,对背景桥梁进行受力分析和施工监控,并对系梁贝雷梁支架进行了分析。 本学位论文主要包括以下几个方面的研究内容： 1.根据施工监控的原理对背景桥梁进行施工监控,并分析背景桥梁的合理成桥状态。 2.分析合理成桥状态下吊杆的索力。建立背景桥梁的施工全过程模拟分析模型,对背景桥梁进行受力特性分析。 3.结合施工现场的预压情况,求得主梁施工预拱度,确定箱梁的立模标高。对箱梁应力和位移进行监测,确保施工中结构的安全。 4.研究背景桥梁吊杆施工张拉力,根据实测索力对该桥进行索力调整,为成桥吊杆索力达到设计要求提供保证。并对吊杆进行无应力控制计算。 5.对拱肋泵送混凝土、吊杆张拉和成桥阶段的稳定性进行研究,确保施工中和成桥状态稳定性满足要求。 6.建立背景桥梁主梁的贝雷梁支架的数值分析模型,分析倾斜贝雷梁的特点,对支架进行分析计算,为临时支架成功搭设提供保证。 通过监测和施工控制计算,对背景桥梁施工全过程进行控制,使背景桥梁达到了合理成桥状态。对于同类型的系杆拱桥仿真计算以及施工监控具有一定的参考价值。
[Abstract]:The Hiejiazui Bridge on the new railway line from Lanzhou to Chongqing is a concrete-filled steel tubular tied arch bridge with a span of 96 m. In this paper, the arch bridge is used as the engineering background, and the stress analysis and construction monitoring of the background bridge are carried out. This dissertation mainly includes the following aspects of research: 1. According to the principle of construction monitoring, the construction of the background bridge is monitored and the reasonable state of the background bridge is analyzed. 2. The cable force of the suspender is analyzed under the reasonable state of the bridge. The simulation analysis model of the whole construction process of the background bridge is established, and the stress characteristics of the background bridge are analyzed. 3. Combined with the preloading of the construction site, the construction arch degree of the main beam is obtained, and the elevation of the vertical formwork of the box girder is determined. The stress and displacement of box girder are monitored to ensure the safety of construction. 4. Background the construction tension of the suspension rod of the bridge is studied and the cable force of the bridge is adjusted according to the measured cable force in order to ensure that the cable force of the suspender can meet the design requirements. The stress-free control calculation of the suspender is carried out. 5. The stability of arch ribbed pumping concrete, suspender tensioning and bridge completion stage is studied to ensure that the state stability of the bridge in construction meets the requirements. 6. The numerical analysis model of the Bei ray beam support of the main beam of the background bridge is established, and the characteristics of the inclined beam are analyzed, and the support is analyzed and calculated, which provides the guarantee for the successful erection of the temporary support. Through monitoring and construction control calculation, the whole construction process of the background bridge is controlled, which makes the background bridge reach a reasonable bridge state. It has certain reference value for the simulation calculation and construction monitoring of the same type tied arch bridge.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4;U448.225
本文编号：2387605
[Abstract]:The Hiejiazui Bridge on the new railway line from Lanzhou to Chongqing is a concrete-filled steel tubular tied arch bridge with a span of 96 m. In this paper, the arch bridge is used as the engineering background, and the stress analysis and construction monitoring of the background bridge are carried out. This dissertation mainly includes the following aspects of research: 1. According to the principle of construction monitoring, the construction of the background bridge is monitored and the reasonable state of the background bridge is analyzed. 2. The cable force of the suspender is analyzed under the reasonable state of the bridge. The simulation analysis model of the whole construction process of the background bridge is established, and the stress characteristics of the background bridge are analyzed. 3. Combined with the preloading of the construction site, the construction arch degree of the main beam is obtained, and the elevation of the vertical formwork of the box girder is determined. The stress and displacement of box girder are monitored to ensure the safety of construction. 4. Background the construction tension of the suspension rod of the bridge is studied and the cable force of the bridge is adjusted according to the measured cable force in order to ensure that the cable force of the suspender can meet the design requirements. The stress-free control calculation of the suspender is carried out. 5. The stability of arch ribbed pumping concrete, suspender tensioning and bridge completion stage is studied to ensure that the state stability of the bridge in construction meets the requirements. 6. The numerical analysis model of the Bei ray beam support of the main beam of the background bridge is established, and the characteristics of the inclined beam are analyzed, and the support is analyzed and calculated, which provides the guarantee for the successful erection of the temporary support. Through monitoring and construction control calculation, the whole construction process of the background bridge is controlled, which makes the background bridge reach a reasonable bridge state. It has certain reference value for the simulation calculation and construction monitoring of the same type tied arch bridge.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4;U448.225
【参考文献】
相关期刊论文 前10条
1 陈淮;吴红升;唐军;;蒲山系杆拱桥吊杆张拉力的空间计算分析[J];铁道科学与工程学报;2008年02期
2 刘钊;;基于能量法的系杆拱桥最优吊杆内力的确定[J];工程力学;2009年08期
3 张兴彦;天津彩虹大桥施工关键技术[J];公路;2000年10期
4 颜全胜,李朝文,徐升桥;丫髻沙大桥施工过程的稳定分析[J];公路;2003年10期
5 陈伟民;史杰;姚君;;现浇箱梁贝雷-扣件钢管组合支架有限元分析[J];公路交通科技(应用技术版);2011年05期
6 阮欣,石雪飞;大跨径预应力混凝土梁桥施工控制的现状与展望[J];公路交通科技;2004年11期
7 万淑敏;;无应力状态控制法在斜拉桥并行作业中的应用[J];世界桥梁;2012年04期
8 刘东锋;程珩;王俊东;;有限元法在贝雷桥设计中的应用[J];机械管理开发;2009年04期
9 程进,江见鲸,肖汝诚,项海帆;静风荷载作用下大跨度钢拱桥极限承载力分析[J];计算力学学报;2003年04期
10 杜蓬娟,张哲,刘春城,石磊;斜拉桥索力张拉过程的最优控制[J];计算力学学报;2005年03期
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