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Construction process for erecting segmental box girder by adopting anchoring suspension girder
The invention discloses a construction process for erecting segmental box girders by adopting anchoring suspension girders, which comprises the following steps of: assembling the suspension girders in an anchoring manner by utilizing a rear anchoring technology, and finishing construction of the segmental box girders on the two sides of a cover beam in a suspended hanging manner through the suspension girders; specifically, construction of segmental box girders on the two sides of the cover beam comprises the steps that the middle line in the longitudinal bridge direction of the cover beam serves as a symmetric point, the segmental box girders are lifted and symmetrically lifted to a suspension beam through a lifting appliance, the segmental box girders are adjusted to the designed position through an adjusting assembly, temporary finish rolling deformed steel bars penetrate through the segmental box girders, and the segmental box girders on the two sides of the cover beam are constructed in the height direction of the cross section in a crossed tensioning mode before and after wet joint construction. And tensioning is conducted twice, finally, prestressed tendon bundle penetrating is conducted to form permanent tensioning, and the suspension beam is removed after permanent tensioning is completed. According to the method, synchronous construction is utilized, the speed is increased, the condition limitation is overcome through lifting of the lifting appliance, the installation requirements of different span sections are met, and the construction safety is ensured through multiple tensioning devices, cross tensioning devices and the like.
本发明公开了一种采用锚固悬挂梁架设节段箱梁的施工工艺，包括以下步骤：利用后锚技术，锚固式装配悬挂梁，通过悬挂梁，使得盖梁两侧节段箱梁通过悬空挂的方式完成施工；具体地，盖梁两侧节段箱梁施工为：以盖梁纵桥方向中线为对称点，通过吊具起吊，对称起吊节段箱梁至悬挂梁上，利用调整组件调整节段箱梁至设计位置，穿临时精轧螺纹钢，沿横截面的高度方向，通过交叉张拉的方式，在湿接缝施工前后，分别进行两次张拉，最后进行预应力筋束穿束形成永久张拉，完成后移除悬挂梁。本发明中，利用同步施工，提高了速度，而起吊吊具则克服了条件的限制，使得满足不同跨段的安装要求，且设置的多个张拉，以及交叉张拉等，确保了施工安全等。
Construction process for erecting segmental box girder by adopting anchoring suspension girder
The invention discloses a construction process for erecting segmental box girders by adopting anchoring suspension girders, which comprises the following steps of: assembling the suspension girders in an anchoring manner by utilizing a rear anchoring technology, and finishing construction of the segmental box girders on the two sides of a cover beam in a suspended hanging manner through the suspension girders; specifically, construction of segmental box girders on the two sides of the cover beam comprises the steps that the middle line in the longitudinal bridge direction of the cover beam serves as a symmetric point, the segmental box girders are lifted and symmetrically lifted to a suspension beam through a lifting appliance, the segmental box girders are adjusted to the designed position through an adjusting assembly, temporary finish rolling deformed steel bars penetrate through the segmental box girders, and the segmental box girders on the two sides of the cover beam are constructed in the height direction of the cross section in a crossed tensioning mode before and after wet joint construction. And tensioning is conducted twice, finally, prestressed tendon bundle penetrating is conducted to form permanent tensioning, and the suspension beam is removed after permanent tensioning is completed. According to the method, synchronous construction is utilized, the speed is increased, the condition limitation is overcome through lifting of the lifting appliance, the installation requirements of different span sections are met, and the construction safety is ensured through multiple tensioning devices, cross tensioning devices and the like.
本发明公开了一种采用锚固悬挂梁架设节段箱梁的施工工艺，包括以下步骤：利用后锚技术，锚固式装配悬挂梁，通过悬挂梁，使得盖梁两侧节段箱梁通过悬空挂的方式完成施工；具体地，盖梁两侧节段箱梁施工为：以盖梁纵桥方向中线为对称点，通过吊具起吊，对称起吊节段箱梁至悬挂梁上，利用调整组件调整节段箱梁至设计位置，穿临时精轧螺纹钢，沿横截面的高度方向，通过交叉张拉的方式，在湿接缝施工前后，分别进行两次张拉，最后进行预应力筋束穿束形成永久张拉，完成后移除悬挂梁。本发明中，利用同步施工，提高了速度，而起吊吊具则克服了条件的限制，使得满足不同跨段的安装要求，且设置的多个张拉，以及交叉张拉等，确保了施工安全等。
Construction process for erecting segmental box girder by adopting anchoring suspension girder
一种采用锚固悬挂梁架设节段箱梁的施工工艺
ZHU ZHENHUI (author) / PAN WENBO (author) / SHAO JUNHUA (author) / KURUMASUGI (author) / XU WEI (author) / QI YOUBAO (author) / ZHOU WEIKUAN (author)
2023-06-23
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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