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A platform for research: civil engineering, architecture and urbanism
Construction method for filling concrete in steel tube arch bridge tube
The invention relates to a concrete filling construction method for a main chord pipe of a steel pipe arch rib of a concrete-filled steel pipe arch bridge when the span is large, the height is large and the pipe diameter is large. The method comprises the steps of cleaning a steel pipe, designing a mix proportion, symmetrically arranging a grouting hole, a temporary slurry discharging hole and an exhaust hole, symmetrically arranging a feeding pipe, a slurry discharging pipe, an exhaust pipe and a stop valve, symmetrically arranging a conveying pipe and a check valve, planning a pumping sequence, pumping concrete and the like. The concrete in the steel tube arch bridge tube shows plug flow movement rule, the concrete at the surrounding part has small disturbance, the setting time is earlier than that of the concrete in the central part, the friction resistance between the concrete in the central part and the concrete in the surrounding part is gradually increased along with the pumping and jacking of the concrete, and the pumping pressure of the ground pump is gradually increased along with the gradual increase of the pumping and jacking height.
本发明涉及到跨度较大、高度较高、管径较粗时，钢管混凝土拱桥钢管拱肋主弦管混凝土填充施工方法。包括清理钢管、配合比设计、压浆孔、临时排浆孔、排气孔对称布置、进料管、排浆管、排气管及截止阀对称布置、输送管、止回阀对称布置、规划泵送顺序、混凝土泵送等步骤，本发明钢管拱肋管内混凝土呈现“栓流”运动规律，周围部分混凝土受扰动较小，凝结时间早于中心部分混凝土，随着混凝土的泵送顶升，中心部分混凝土与周围部分混凝土的摩擦阻力逐渐增大，且由于随着泵送顶升的高度逐渐加大，地泵泵送压力逐渐增加。
Construction method for filling concrete in steel tube arch bridge tube
The invention relates to a concrete filling construction method for a main chord pipe of a steel pipe arch rib of a concrete-filled steel pipe arch bridge when the span is large, the height is large and the pipe diameter is large. The method comprises the steps of cleaning a steel pipe, designing a mix proportion, symmetrically arranging a grouting hole, a temporary slurry discharging hole and an exhaust hole, symmetrically arranging a feeding pipe, a slurry discharging pipe, an exhaust pipe and a stop valve, symmetrically arranging a conveying pipe and a check valve, planning a pumping sequence, pumping concrete and the like. The concrete in the steel tube arch bridge tube shows plug flow movement rule, the concrete at the surrounding part has small disturbance, the setting time is earlier than that of the concrete in the central part, the friction resistance between the concrete in the central part and the concrete in the surrounding part is gradually increased along with the pumping and jacking of the concrete, and the pumping pressure of the ground pump is gradually increased along with the gradual increase of the pumping and jacking height.
本发明涉及到跨度较大、高度较高、管径较粗时，钢管混凝土拱桥钢管拱肋主弦管混凝土填充施工方法。包括清理钢管、配合比设计、压浆孔、临时排浆孔、排气孔对称布置、进料管、排浆管、排气管及截止阀对称布置、输送管、止回阀对称布置、规划泵送顺序、混凝土泵送等步骤，本发明钢管拱肋管内混凝土呈现“栓流”运动规律，周围部分混凝土受扰动较小，凝结时间早于中心部分混凝土，随着混凝土的泵送顶升，中心部分混凝土与周围部分混凝土的摩擦阻力逐渐增大，且由于随着泵送顶升的高度逐渐加大，地泵泵送压力逐渐增加。
Construction method for filling concrete in steel tube arch bridge tube
一种钢管拱桥管内填充混凝土施工方法
LIU JIANYONG (author) / ZHAN SHURUI (author) / ZHANG JINYU (author) / HE GUOQIANG (author) / TIAN ZHUOLUN (author) / WEI PENG (author) / CHU JINYANG (author) / XUE XINGWANG (author)
2021-08-20
Patent
Electronic Resource
Chinese
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