桥墩动力试验设计与配重箱选取
发布时间：2019-04-08 11:51
【摘要】：在我国桥梁工程中,桥墩是桥梁的最薄弱部位,对于桥墩的抗震试验研究是整个桥梁抗震研究工作的基础。目前国内外对于单个桥墩构件的抗震试验研究较多,但大都以圆形、矩形实心墩为主,对于其他截面的桥墩抗震性能试验研究较少,因此,研究矩形空心桥墩的抗震性能具有很好的工程实际意义。为了更好地重现地震全过程和各种地震波作用,本论文对钢筋混凝土矩形空心桥墩进行地震模拟振动台试验,并设计试验方案和配重方案,对配重箱进行有限元软件模拟。主要工作有:(1)对配箍率不同的2个钢筋混凝土矩形空心桥墩按一致相似律进行缩尺模型并对其进行地震模拟振动台试验研究。(2)设计并制作2个钢筋混凝土矩形空心桥墩,总结出一套完整的试验方案。(3)设计配重方案并按方案制作一配重箱用来承担上部荷载作用。(4)对配重箱进行Abaqus有限元软件模拟,从应力、加速度及位移等因素来评价配重箱的强度要求和抗震要求。研究发现,此类矩形空心桥墩的设计能够满足试验的理论要求,配重箱的设计能够满足整个试验的破坏要求,并为桥墩提供人工质量模拟。本文的试验研究成果可供实际工程作为参考。
[Abstract]:In the bridge engineering of our country, the pier is the weakest part of the bridge, and the seismic test research of the pier is the foundation of the whole bridge anti-seismic research work. At present, there are a lot of researches on seismic tests of single pier members at home and abroad, but most of them are circular and rectangular solid piers, and there is little research on seismic performance of pier of other sections, so there is little research on seismic performance of piers with other cross-sections. It is of great practical significance to study the seismic performance of rectangular hollow piers. In order to reproduce the whole seismic process and all kinds of seismic waves, the shaking table tests of reinforced concrete rectangular hollow piers are carried out in this paper, and the test scheme and weighing scheme are designed, and the finite element software simulation of the counterweight box is carried out. The main work is as follows: (1) two reinforced concrete rectangular hollow piers with different stirrups are modeled according to the uniform similarity law and simulated shaking table tests are carried out. (2) two reinforcement bars are designed and fabricated. Concrete rectangular hollow pier, A complete set of test scheme is summarized. (3) the counterweight scheme is designed and a counterweight box is made according to the scheme to bear the upper load. (4) the Abaqus finite element software is used to simulate the counterweight box, from the stress, Acceleration and displacement are used to evaluate the strength and seismic requirements of the counterweight box. It is found that the design of this kind of rectangular hollow piers can meet the theoretical requirements of the test and the design of the counterweight box can meet the failure requirements of the whole test and provide artificial mass simulation for the piers. The experimental results of this paper can be used as a reference for practical engineering.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U446
本文编号：2454548
[Abstract]:In the bridge engineering of our country, the pier is the weakest part of the bridge, and the seismic test research of the pier is the foundation of the whole bridge anti-seismic research work. At present, there are a lot of researches on seismic tests of single pier members at home and abroad, but most of them are circular and rectangular solid piers, and there is little research on seismic performance of pier of other sections, so there is little research on seismic performance of piers with other cross-sections. It is of great practical significance to study the seismic performance of rectangular hollow piers. In order to reproduce the whole seismic process and all kinds of seismic waves, the shaking table tests of reinforced concrete rectangular hollow piers are carried out in this paper, and the test scheme and weighing scheme are designed, and the finite element software simulation of the counterweight box is carried out. The main work is as follows: (1) two reinforced concrete rectangular hollow piers with different stirrups are modeled according to the uniform similarity law and simulated shaking table tests are carried out. (2) two reinforcement bars are designed and fabricated. Concrete rectangular hollow pier, A complete set of test scheme is summarized. (3) the counterweight scheme is designed and a counterweight box is made according to the scheme to bear the upper load. (4) the Abaqus finite element software is used to simulate the counterweight box, from the stress, Acceleration and displacement are used to evaluate the strength and seismic requirements of the counterweight box. It is found that the design of this kind of rectangular hollow piers can meet the theoretical requirements of the test and the design of the counterweight box can meet the failure requirements of the whole test and provide artificial mass simulation for the piers. The experimental results of this paper can be used as a reference for practical engineering.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U446
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