Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prestress tensioning method for prefabricated pipe gallery
The invention provides a prefabricated pipe gallery prestress tensioning method, and belongs to the technical field of prefabricated structures. The pre-stress tensioning method for the prefabricated pipe gallery comprises the steps that finish rolling deformed steel bars are wrapped with conical plastic sleeves, and a plurality of pipe gallery sections are connected through the finish rolling deformed steel bars; the anchorage device gaskets are cleaned and symmetrically installed on the pipe gallery sections, and meanwhile the outer ends of the anchorage device gaskets are kept flush; the jack is calibrated, the jack is installed on a bracket for tensioning after calibration is completed, a diagonal tensioning mode is adopted in the tensioning process, double control is adopted in the tensioning process and the tensioning effect, the tensioning stress is mainly controlled, the steel bar elongation value is assisted by controlling, and mutual calibration is carried out; after tensioning is completed, grouting is conducted through a cement paste injector, after duct grouting is completed, clean water is used for washing, high-pressure air is used for drying, and holes of the anchorage device gasket are blocked through a sealing cover or cement paste; and finally, a fine aggregate concrete grouting machine is adopted for grouting through the grouting holes, and anchor sealing of the connecting box is completed.
本发明提供了一种预制管廊预应力张拉方法，属于预制结构技术领域。该预制管廊预应力张拉方法包括采用锥形塑料套管包裹精轧螺纹钢，若干管廊节段间通过精轧螺纹钢连接；清理锚具垫片并将其对称安装在管廊节段上，同时保持锚具垫片的外端平齐；对千斤顶进行校检，校检完成后将千斤顶安装在托架上进行张拉，张拉时采用对角线张拉的方式，并在张拉过程以及张拉效果采用双控，以控制张拉应力为主，以控制钢筋伸长值为辅并相互进行校核；在张拉完成后水泥浆注射器进行注浆，孔道压浆完成后利用清水冲洗并采用高压风吹干，采用密封罩或水泥浆对锚具垫片孔隙进行封堵；最终采用细石混凝土注浆机通过注浆孔进行注浆，完成连接箱封锚。
Prestress tensioning method for prefabricated pipe gallery
The invention provides a prefabricated pipe gallery prestress tensioning method, and belongs to the technical field of prefabricated structures. The pre-stress tensioning method for the prefabricated pipe gallery comprises the steps that finish rolling deformed steel bars are wrapped with conical plastic sleeves, and a plurality of pipe gallery sections are connected through the finish rolling deformed steel bars; the anchorage device gaskets are cleaned and symmetrically installed on the pipe gallery sections, and meanwhile the outer ends of the anchorage device gaskets are kept flush; the jack is calibrated, the jack is installed on a bracket for tensioning after calibration is completed, a diagonal tensioning mode is adopted in the tensioning process, double control is adopted in the tensioning process and the tensioning effect, the tensioning stress is mainly controlled, the steel bar elongation value is assisted by controlling, and mutual calibration is carried out; after tensioning is completed, grouting is conducted through a cement paste injector, after duct grouting is completed, clean water is used for washing, high-pressure air is used for drying, and holes of the anchorage device gasket are blocked through a sealing cover or cement paste; and finally, a fine aggregate concrete grouting machine is adopted for grouting through the grouting holes, and anchor sealing of the connecting box is completed.
本发明提供了一种预制管廊预应力张拉方法，属于预制结构技术领域。该预制管廊预应力张拉方法包括采用锥形塑料套管包裹精轧螺纹钢，若干管廊节段间通过精轧螺纹钢连接；清理锚具垫片并将其对称安装在管廊节段上，同时保持锚具垫片的外端平齐；对千斤顶进行校检，校检完成后将千斤顶安装在托架上进行张拉，张拉时采用对角线张拉的方式，并在张拉过程以及张拉效果采用双控，以控制张拉应力为主，以控制钢筋伸长值为辅并相互进行校核；在张拉完成后水泥浆注射器进行注浆，孔道压浆完成后利用清水冲洗并采用高压风吹干，采用密封罩或水泥浆对锚具垫片孔隙进行封堵；最终采用细石混凝土注浆机通过注浆孔进行注浆，完成连接箱封锚。
Prestress tensioning method for prefabricated pipe gallery
一种预制管廊预应力张拉方法
ZHOU FEI (Autor:in) / HU HONGWEI (Autor:in) / LEE WON-IL (Autor:in) / GONG JIEMEI (Autor:in) / LIU QING (Autor:in)
23.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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