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A platform for research: civil engineering, architecture and urbanism
Prefabricated and assembled hollow pier suitable for high-earthquake area, and construction method thereof
The invention provides a prefabricated assembled hollow pier suitable for a high earthquake area, and a construction method thereof, and relates to the technical field of bridge construction. The hollow pier sequentially comprises a foundation, a bottom section, a middle section and a top section from bottom to top, and the foundation and the bottom section are completed through one-time concrete pouring on site; the bottom section, the middle section and the top section are prefabricated and spliced with one another; a thick steel bar anchoring end is pre-embedded in the top of the bottom section; annular shear keys are arranged on the top surface of the bottom section, the top surface and the bottom surface of the middle section and the bottom surface of the top section; prestressed thick steel bars are pre-embedded in the top surface of the bottom section; and thick steel bar hole channels which are arranged in a penetrating mode are pre-buried in the middle section and the top section, prestressed thick steel bars penetrate through the thick steel bar hole channels, and the prestressed thick steel bars are tensioned and anchored. After the sections are assembled, the prestressed steel strand penetrates into the top section from the top face of the top section, the prestressed steel strand is tensioned through the steel strand tensioning ends, and the steel strand tensioning ends are located on the top section and the bottom section respectively. And the energy dissipation capacity and the ductility of the assembled pier are improved.
本发明提供适用于高震区的预制拼装空心桥墩及施工方法，涉及桥梁建造技术领域。由下及上依次包括基础、底节段、中间节段和顶节段，基础和底节段采用现场一次浇筑混凝土完成；底节段、中间节段和顶节段相互之间采用预制拼装完成；底节段顶部预埋有粗钢筋锚固端；底节段顶面、中间节段顶面及底面、顶节段底面均设置有环状剪力键；底节段顶面预埋有预应力粗钢筋；中间节段和顶节段均预埋有贯穿设置的粗钢筋孔道，在粗钢筋孔道处穿入预应力粗钢筋，预应力粗钢筋被张拉及锚固；当各节段拼装完成后，将预应力钢绞线从顶节段顶面穿入，通过钢绞线张拉端对预应力钢绞线进行张拉，钢绞线张拉端分别位于顶节段及底节段上。提高拼装墩耗能能力和延性。
Prefabricated and assembled hollow pier suitable for high-earthquake area, and construction method thereof
The invention provides a prefabricated assembled hollow pier suitable for a high earthquake area, and a construction method thereof, and relates to the technical field of bridge construction. The hollow pier sequentially comprises a foundation, a bottom section, a middle section and a top section from bottom to top, and the foundation and the bottom section are completed through one-time concrete pouring on site; the bottom section, the middle section and the top section are prefabricated and spliced with one another; a thick steel bar anchoring end is pre-embedded in the top of the bottom section; annular shear keys are arranged on the top surface of the bottom section, the top surface and the bottom surface of the middle section and the bottom surface of the top section; prestressed thick steel bars are pre-embedded in the top surface of the bottom section; and thick steel bar hole channels which are arranged in a penetrating mode are pre-buried in the middle section and the top section, prestressed thick steel bars penetrate through the thick steel bar hole channels, and the prestressed thick steel bars are tensioned and anchored. After the sections are assembled, the prestressed steel strand penetrates into the top section from the top face of the top section, the prestressed steel strand is tensioned through the steel strand tensioning ends, and the steel strand tensioning ends are located on the top section and the bottom section respectively. And the energy dissipation capacity and the ductility of the assembled pier are improved.
本发明提供适用于高震区的预制拼装空心桥墩及施工方法，涉及桥梁建造技术领域。由下及上依次包括基础、底节段、中间节段和顶节段，基础和底节段采用现场一次浇筑混凝土完成；底节段、中间节段和顶节段相互之间采用预制拼装完成；底节段顶部预埋有粗钢筋锚固端；底节段顶面、中间节段顶面及底面、顶节段底面均设置有环状剪力键；底节段顶面预埋有预应力粗钢筋；中间节段和顶节段均预埋有贯穿设置的粗钢筋孔道，在粗钢筋孔道处穿入预应力粗钢筋，预应力粗钢筋被张拉及锚固；当各节段拼装完成后，将预应力钢绞线从顶节段顶面穿入，通过钢绞线张拉端对预应力钢绞线进行张拉，钢绞线张拉端分别位于顶节段及底节段上。提高拼装墩耗能能力和延性。
Prefabricated and assembled hollow pier suitable for high-earthquake area, and construction method thereof
一种适用于高震区的预制拼装空心桥墩及施工方法
SUN SHULI (author) / SU WEI (author) / ZHANG SHUAI (author) / DU BAOJUN (author)
2021-08-03
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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