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Construction method of concrete filled steel tube arch rib
When arch ribs are erected, a gap is reserved between the arch rib sections on the two sides at the arch crown position, and the two sides are rigidly connected through steel members; a pressure applying part is mounted at the end part of the arch rib section on each side; each pressure applying part comprises a transverse partition plate, a cylinder body and a piston body; after concrete is injected into the arch rib sections on the two sides in a pressing mode, jacks are mounted in the gaps, pressure is applied to the piston bodies on the two sides, the concrete pressure in the arch rib sections is increased, and a steel pipe is subjected to tension in the circumferential direction; and after the concrete is finally set, the arch rib sections on the two sides are connected at the gaps through steel pipe pieces, connecting components are removed, the concrete is injected into the gaps in a pressing mode, and forming construction of the arch ribs is completed. According to the method, disengagement and debonding between the concrete in the arch ribs and the steel pipe wall can be avoided, and the added materials and cost are low.
在架设拱肋时，在拱顶位置，两侧的拱肋段间留一间隙，并用钢构件将两侧刚性连接。每侧的拱肋段端部安装有压力施加部。压力施加部包括横隔板、缸体、活塞体。在两侧的拱肋段内压注混凝土后，在间隙内安装千斤顶，对两侧的活塞体施加压力，增加拱肋段内的混凝土压力，并使钢管环向受到拉力。待混凝土终凝后，用钢管片在间隙处连接两侧拱肋段，并去除连接构件，向间隙内压注混凝土，完成拱肋的成型施工。该方法可避免拱肋内混凝土与钢管壁间的脱空和脱粘，且增加的材料和费用低。
Construction method of concrete filled steel tube arch rib
When arch ribs are erected, a gap is reserved between the arch rib sections on the two sides at the arch crown position, and the two sides are rigidly connected through steel members; a pressure applying part is mounted at the end part of the arch rib section on each side; each pressure applying part comprises a transverse partition plate, a cylinder body and a piston body; after concrete is injected into the arch rib sections on the two sides in a pressing mode, jacks are mounted in the gaps, pressure is applied to the piston bodies on the two sides, the concrete pressure in the arch rib sections is increased, and a steel pipe is subjected to tension in the circumferential direction; and after the concrete is finally set, the arch rib sections on the two sides are connected at the gaps through steel pipe pieces, connecting components are removed, the concrete is injected into the gaps in a pressing mode, and forming construction of the arch ribs is completed. According to the method, disengagement and debonding between the concrete in the arch ribs and the steel pipe wall can be avoided, and the added materials and cost are low.
在架设拱肋时，在拱顶位置，两侧的拱肋段间留一间隙，并用钢构件将两侧刚性连接。每侧的拱肋段端部安装有压力施加部。压力施加部包括横隔板、缸体、活塞体。在两侧的拱肋段内压注混凝土后，在间隙内安装千斤顶，对两侧的活塞体施加压力，增加拱肋段内的混凝土压力，并使钢管环向受到拉力。待混凝土终凝后，用钢管片在间隙处连接两侧拱肋段，并去除连接构件，向间隙内压注混凝土，完成拱肋的成型施工。该方法可避免拱肋内混凝土与钢管壁间的脱空和脱粘，且增加的材料和费用低。
Construction method of concrete filled steel tube arch rib
一种钢管混凝土拱肋的施工方法
CUI ZHENJIANG (author) / WEI JIANDONG (author) / WANG JUNLIN (author)
2021-10-15
Patent
Electronic Resource
Chinese
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