A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bridge continuous beam steel beam tensioning construction method
The invention provides a bridge continuous beam steel beam tensioning construction method. The method comprises the steps that a prestressed pipeline is positioned and installed; top surface pre-stressed steel bundles are penetrated; top surface prestress tensioning is conducted; measuring a pore frictional resistance value; calculating a hole friction coefficient according to the hole friction value; the average stress of the prestressed steel beams is calculated according to the pore channel friction resistance coefficient; calculating a theoretical elongation value of the prestressed steel beam according to the average prestress of the prestressed steel beam; grouting a top surface prestressing tendon pipeline; and top surface prestress anchor sealing is conducted. The application of the method provided by the invention realizes the efficient, rapid and high-quality completion of prestress construction under the condition that the space in the box chamber is limited, and the technology can be transversely extended, is applied to the construction of prestressed structures without construction conditions below steel-concrete composite beams and the like, and has a wide application scene.
本发明提供了一种桥梁连续梁钢束张拉施工方法，包括：预应力管道定位安装；顶面预应力钢束穿束；顶面预应力张拉；测定孔道摩阻力值；根据所述孔道摩阻力值计算出孔道摩阻系数；根据所述孔道摩阻系数计算出预应力钢束平均应力；根据所述预应力钢束平均预应力计算出预应力钢束理论伸长值；顶面预应力束管道压浆；顶面预应力封锚。本发明提供的方法的应用实现了预应力在箱室内空间有限情况下高效、快速、高质量的完成预应力施工，且该技术可横向延伸，应用到钢混组合梁等下方无施工条件的预应力结构施工中，具有广泛的应用场景。
Bridge continuous beam steel beam tensioning construction method
The invention provides a bridge continuous beam steel beam tensioning construction method. The method comprises the steps that a prestressed pipeline is positioned and installed; top surface pre-stressed steel bundles are penetrated; top surface prestress tensioning is conducted; measuring a pore frictional resistance value; calculating a hole friction coefficient according to the hole friction value; the average stress of the prestressed steel beams is calculated according to the pore channel friction resistance coefficient; calculating a theoretical elongation value of the prestressed steel beam according to the average prestress of the prestressed steel beam; grouting a top surface prestressing tendon pipeline; and top surface prestress anchor sealing is conducted. The application of the method provided by the invention realizes the efficient, rapid and high-quality completion of prestress construction under the condition that the space in the box chamber is limited, and the technology can be transversely extended, is applied to the construction of prestressed structures without construction conditions below steel-concrete composite beams and the like, and has a wide application scene.
本发明提供了一种桥梁连续梁钢束张拉施工方法，包括：预应力管道定位安装；顶面预应力钢束穿束；顶面预应力张拉；测定孔道摩阻力值；根据所述孔道摩阻力值计算出孔道摩阻系数；根据所述孔道摩阻系数计算出预应力钢束平均应力；根据所述预应力钢束平均预应力计算出预应力钢束理论伸长值；顶面预应力束管道压浆；顶面预应力封锚。本发明提供的方法的应用实现了预应力在箱室内空间有限情况下高效、快速、高质量的完成预应力施工，且该技术可横向延伸，应用到钢混组合梁等下方无施工条件的预应力结构施工中，具有广泛的应用场景。
Bridge continuous beam steel beam tensioning construction method
桥梁连续梁钢束张拉施工方法
ZHANG ZHIGUO (author) / LIU WENSHENG (author) / CHEN ZHAOBO (author) / SU LI (author) / WANG JUNQIANG (author) / SHANG YAXIN (author)
2023-10-10
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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