A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pile foundation structure of highway bridge in alluvial-flood plain and construction process
The invention relates to a pile foundation structure and a construction process of an alluvial-flood plain expressway bridge, and belongs to the technical field of bridge engineering. The pile foundation structure comprises a prefabricated bearing platform and a prefabricated pipe pile, wherein the prefabricated bearing platform is arranged above the prefabricated pipe pile; the prefabricated pipe pile comprises a pipe pile reinforcement cage, a guide cylinder is fixedly connected to the pipe pile reinforcement cage, and an anchor rod is slidably connected into the guide cylinder; a fixing support is arranged at the top of the pipe pile reinforcement cage, and a transmission mechanism used for pushing the end of the anchor rod to be inserted into the inner wall of a pile hole is arranged on the fixing support. The multiple anchor rods can be more easily inserted into the inner wall of the pile hole through the transmission mechanism, and the foundation action area and the stress spread angle of the prefabricated pipe pile can be enlarged through the anchor rods; the stress distribution of the prefabricated pipe pile can be adjusted through the anchor rod, and differential settlement of the prefabricated bearing platform can be reduced while the overall rigidity of the prefabricated pipe pile is improved, so that the bearing capacity of a pile foundation is effectively improved, and safe and reliable operation of an expressway is guaranteed.
本申请涉及一种冲洪积平原高速公路桥梁桩基结构及施工工艺，属于桥梁工程技术领域。该桩基结构包括预制承台和预制管桩，所述预制承台设置于预制管桩的上方；所述预制管桩包括管桩钢筋笼，所述管桩钢筋笼上固定连接有导向筒，所述导向筒内滑移连接有锚杆；所述管桩钢筋笼的顶部设置有固定支架，所述固定支架上设置有用于推动锚杆的端部插入桩孔内壁的传动机构。本申请通过传动机构能够将多个锚杆更容易插入桩孔的内壁，经锚杆能够扩大预制管桩的基础作用面积和应力扩散角；即通过锚杆能够调整预制管桩的应力分布，在提高预制管桩整体刚度的同时，又可减小预制承台不均匀沉降，从而有效提高桩基的承载力，保证高速公路安全可靠运行。
Pile foundation structure of highway bridge in alluvial-flood plain and construction process
The invention relates to a pile foundation structure and a construction process of an alluvial-flood plain expressway bridge, and belongs to the technical field of bridge engineering. The pile foundation structure comprises a prefabricated bearing platform and a prefabricated pipe pile, wherein the prefabricated bearing platform is arranged above the prefabricated pipe pile; the prefabricated pipe pile comprises a pipe pile reinforcement cage, a guide cylinder is fixedly connected to the pipe pile reinforcement cage, and an anchor rod is slidably connected into the guide cylinder; a fixing support is arranged at the top of the pipe pile reinforcement cage, and a transmission mechanism used for pushing the end of the anchor rod to be inserted into the inner wall of a pile hole is arranged on the fixing support. The multiple anchor rods can be more easily inserted into the inner wall of the pile hole through the transmission mechanism, and the foundation action area and the stress spread angle of the prefabricated pipe pile can be enlarged through the anchor rods; the stress distribution of the prefabricated pipe pile can be adjusted through the anchor rod, and differential settlement of the prefabricated bearing platform can be reduced while the overall rigidity of the prefabricated pipe pile is improved, so that the bearing capacity of a pile foundation is effectively improved, and safe and reliable operation of an expressway is guaranteed.
本申请涉及一种冲洪积平原高速公路桥梁桩基结构及施工工艺，属于桥梁工程技术领域。该桩基结构包括预制承台和预制管桩，所述预制承台设置于预制管桩的上方；所述预制管桩包括管桩钢筋笼，所述管桩钢筋笼上固定连接有导向筒，所述导向筒内滑移连接有锚杆；所述管桩钢筋笼的顶部设置有固定支架，所述固定支架上设置有用于推动锚杆的端部插入桩孔内壁的传动机构。本申请通过传动机构能够将多个锚杆更容易插入桩孔的内壁，经锚杆能够扩大预制管桩的基础作用面积和应力扩散角；即通过锚杆能够调整预制管桩的应力分布，在提高预制管桩整体刚度的同时，又可减小预制承台不均匀沉降，从而有效提高桩基的承载力，保证高速公路安全可靠运行。
Pile foundation structure of highway bridge in alluvial-flood plain and construction process
冲洪积平原高速公路桥梁桩基结构及施工工艺
SHAO KUNHOU (author) / SUN YANCHEN (author) / ZHOU GAOJUN (author) / XU ENBIN (author) / ZHAO QUANWEI (author) / LI YONGSHENG (author) / ZHANG JINGQUAN (author) / FAN JIXING (author)
2023-12-15
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Construction method of bridge pile foundation on highway
| European Patent Office | 2022