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Hanging basket method construction method for suspended pouring box girder
The invention discloses a suspended pouring box girder hanging basket method construction method. The method comprises the following steps that S1, a box girder section at the upper end of a pier is poured; S2, a hanging basket is installed; S3, a next box girder section is poured; in the step S4, a vacuum-assisted grouting process is adopted to conduct grouting on the prestressed pipeline, and the vacuum-assisted grouting process comprises the steps that firstly, a vacuum pump is adopted to suck air in the prestressed pipeline at a grout outlet of the prestressed pipeline, so that the vacuum degree in the prestressed pipeline reaches-0.06 MPa to 0.1 MPa; and then pressing the cement paste into the pipeline at a mud jacking opening of the prestressed pipeline by using a mud jacking pump under the positive pressure of 0.5-0.7 MPa. The prestressed pipeline grouting device has the effect of improving the prestressed pipeline grouting quality.
本申请公开了一种悬浇箱梁挂篮法施工方法，其包括如下步骤：S1、浇筑桥墩上端处的箱梁节段，S2、安装挂篮，S3、浇筑下一节箱梁节段，S4、挂篮前移以及管道压浆，S5、浇筑后续箱梁节段，S6、浇筑合拢段；在步骤S4中，采用真空辅助压浆工艺对预应力管道压浆，真空辅助压浆工艺为：先在预应力管道的出浆口采用真空泵抽吸预应力管道中的空气，使预应力管道内达到‑0.06‑0.1MPa的真空度，然后在预应力管道的压浆口用压浆泵以0.5‑0.7MPa的正压力将水泥浆压入管道内。本申请具有提高预应力管道压浆的质量的效果。
Hanging basket method construction method for suspended pouring box girder
The invention discloses a suspended pouring box girder hanging basket method construction method. The method comprises the following steps that S1, a box girder section at the upper end of a pier is poured; S2, a hanging basket is installed; S3, a next box girder section is poured; in the step S4, a vacuum-assisted grouting process is adopted to conduct grouting on the prestressed pipeline, and the vacuum-assisted grouting process comprises the steps that firstly, a vacuum pump is adopted to suck air in the prestressed pipeline at a grout outlet of the prestressed pipeline, so that the vacuum degree in the prestressed pipeline reaches-0.06 MPa to 0.1 MPa; and then pressing the cement paste into the pipeline at a mud jacking opening of the prestressed pipeline by using a mud jacking pump under the positive pressure of 0.5-0.7 MPa. The prestressed pipeline grouting device has the effect of improving the prestressed pipeline grouting quality.
本申请公开了一种悬浇箱梁挂篮法施工方法，其包括如下步骤：S1、浇筑桥墩上端处的箱梁节段，S2、安装挂篮，S3、浇筑下一节箱梁节段，S4、挂篮前移以及管道压浆，S5、浇筑后续箱梁节段，S6、浇筑合拢段；在步骤S4中，采用真空辅助压浆工艺对预应力管道压浆，真空辅助压浆工艺为：先在预应力管道的出浆口采用真空泵抽吸预应力管道中的空气，使预应力管道内达到‑0.06‑0.1MPa的真空度，然后在预应力管道的压浆口用压浆泵以0.5‑0.7MPa的正压力将水泥浆压入管道内。本申请具有提高预应力管道压浆的质量的效果。
Hanging basket method construction method for suspended pouring box girder
一种悬浇箱梁挂篮法施工方法
OU QIONG (author) / JIANG JINBO (author) / XU CHENGSHUANG (author) / XU HUI (author) / XU HONG (author) / YANG YONGQIANG (author) / ZHOU HANG (author) / WU HAOHUA (author) / PU JUN (author) / LYU YONGGANG (author)
2022-08-16
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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