多跨系杆拱桥整体模型试验研究
发布时间：2018-09-09 16:45
【摘要】：中承式系杆拱桥造型优美,跨越能力大,在城市桥梁中备受青睐。在我国,多跨系杆拱桥的建设并不多,国内可供参考的实例很少。 大连普湾十六号路跨海桥主桥为五跨系杆拱桥,总长640米,采用提篮式钢箱拱肋。本文为此桥为工程依托,利用模型试验与有限元分析相结合的方法,分析了多跨系杆提篮拱桥的结构特性,为施工及同类研究提供了建议以供参考。本文的主要研究内容有以下几部分： (1)简要的介绍模型试验的相似理论,推导出模型的材料、几何及刚度特性物理量的相似关系。综合考虑实验室场地及试验内容,五跨连杆模型选用了1：30的缩尺比和5052-H32铝板材料。根据几何和刚度相似的原则,并结合实际选材,设计了拱肋、.边主梁的截面尺寸。采用铆钉与焊接相结合的的方式组装模型。 (2)采用Midas/Civil软件,建立了五连跨拱桥有限元模型,计算在自重、二期荷载和汽车活载下拱肋、主梁、吊杆和系杆的应力和位移值。同时建立了1：30缩尺比铝制模型的有限元模型,模拟静载试验中的十个加载工况,计算各个工况下模型的应力和位移值。结果表明各个构件的强度和刚度都在自身的容许范围内,且两个模型结构的位移成比例,且应力间存在一定关系,验证了其相似关系。 (3)设计并进行了全桥模型静力试验,观测并记录试验结果,比较理论值和实测值并进行误差分析。试验过程中,模型未出现整体或局部失稳以及破坏情况,表明本桥各构件的应力均处于安全范围内；试验的结果反推算出的实桥位移和应力均满足要求,表明本桥设计合理,可以进行施工。
[Abstract]:Mid-through tied arch bridge is very popular in city bridge because of its beautiful shape and great span ability. In our country, the construction of multi-span tied arch bridge is not many, and there are few examples for reference in our country. Dalian Puwan Road 16 cross-sea bridge main bridge for five-span tied arch bridge, a total length of 640 meters, using basket-type steel box arch rib. In this paper, the structural characteristics of multi-span tied basket arch bridge are analyzed by using the method of model test and finite element analysis, which provides suggestions for construction and similar research. The main contents of this paper are as follows: (1) the similarity theory of model test is briefly introduced, and the similarity relations among material, geometry and stiffness characteristics of the model are deduced. Considering the laboratory site and test content, the five-span connecting rod model selected the 1:30 scale ratio and 5052-H32 aluminum sheet material. According to the principle of geometric and stiffness similarity, and combining with the actual material selection, the arch rib is designed. Section size of side girder. The model is assembled by the combination of rivets and welding. (2) the finite element model of five-span arch bridge is established by using Midas/Civil software, and the arch rib and main beam are calculated under self-weight, second-stage load and live load of automobile. Stress and displacement values of suspenders and tethers. At the same time, the finite element model of the 1:30 scale ratio aluminum model is established to simulate ten loading conditions in the static load test, and the stress and displacement values of the model are calculated under each working condition. The results show that the strength and stiffness of each component are within its allowable range, and the displacement of the two model structures is proportional, and there is a certain relationship between the stresses. The similarity relationship is verified. (3) the static test of the whole bridge model is designed and carried out, the experimental results are observed and recorded, the theoretical values and the measured values are compared and the errors are analyzed. In the course of test, there is no whole or local instability and failure in the model, which shows that the stress of each component of the bridge is within the safe range, and the displacement and stress of the real bridge calculated by the test results all meet the requirements, which indicates that the design of the bridge is reasonable. Construction can be carried out.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U446;U448.225
本文编号：2232990
[Abstract]:Mid-through tied arch bridge is very popular in city bridge because of its beautiful shape and great span ability. In our country, the construction of multi-span tied arch bridge is not many, and there are few examples for reference in our country. Dalian Puwan Road 16 cross-sea bridge main bridge for five-span tied arch bridge, a total length of 640 meters, using basket-type steel box arch rib. In this paper, the structural characteristics of multi-span tied basket arch bridge are analyzed by using the method of model test and finite element analysis, which provides suggestions for construction and similar research. The main contents of this paper are as follows: (1) the similarity theory of model test is briefly introduced, and the similarity relations among material, geometry and stiffness characteristics of the model are deduced. Considering the laboratory site and test content, the five-span connecting rod model selected the 1:30 scale ratio and 5052-H32 aluminum sheet material. According to the principle of geometric and stiffness similarity, and combining with the actual material selection, the arch rib is designed. Section size of side girder. The model is assembled by the combination of rivets and welding. (2) the finite element model of five-span arch bridge is established by using Midas/Civil software, and the arch rib and main beam are calculated under self-weight, second-stage load and live load of automobile. Stress and displacement values of suspenders and tethers. At the same time, the finite element model of the 1:30 scale ratio aluminum model is established to simulate ten loading conditions in the static load test, and the stress and displacement values of the model are calculated under each working condition. The results show that the strength and stiffness of each component are within its allowable range, and the displacement of the two model structures is proportional, and there is a certain relationship between the stresses. The similarity relationship is verified. (3) the static test of the whole bridge model is designed and carried out, the experimental results are observed and recorded, the theoretical values and the measured values are compared and the errors are analyzed. In the course of test, there is no whole or local instability and failure in the model, which shows that the stress of each component of the bridge is within the safe range, and the displacement and stress of the real bridge calculated by the test results all meet the requirements, which indicates that the design of the bridge is reasonable. Construction can be carried out.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U446;U448.225
【参考文献】
相关期刊论文 前10条
1 陈星烨,马晓燕,宋建中;大型结构试验模型相似理论分析与推导[J];长沙交通学院学报;2004年01期
2 陈宝春;;拱桥技术的回顾与展望[J];福州大学学报(自然科学版);2009年01期
3 徐仲民;;公路桥梁静力荷载试验技术研究[J];公路交通科技(应用技术版);2010年04期
4 刘钊,秦卫红,惠卓;日本新浜寺桥—一座大跨度尼尔森-洛斯体系的桥梁[J];国外桥梁;1999年04期
5 戚玉明;;ANSYS有限元软件在桥梁工程中的应用[J];山东交通科技;2006年03期
6 罗福午;历史上的拱桥[J];建筑技术;2002年03期
7 冒琴;;浅述系杆拱桥[J];山西建筑;2007年07期
8 张胜雨;;钢箱拱桥试验模型的设计[J];山西建筑;2011年33期
9 宋建平;邓志方;;Midas Civil在确定桥梁静载试验布载中的研究[J];黑龙江科技信息;2013年01期
10 王宁宁;;ANSYS结构有限元分析在桥梁工程中的应用[J];交通世界(建养.机械);2012年10期
相关博士学位论文 前1条
1 管俊峰;钢筋混凝土结构仿真模型试验理论与应用研究[D];大连理工大学;2010年
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