旋挖成孔灌注桩后注浆工艺在成都京东方桩基工程中的应用

详细信息

刊出日期: 2016-11-10

Application of Post-grouting Technology for Rotary Holing Cast-in-place Pile in Pile Foundation Project of BO-ECD

Publish Date: 10 November 2016

摘要: 旋挖成孔灌注桩以其适用范围广、施工速度快等优点在工程领域中得到广泛应用,但也因其沉渣难以控制、在大直径卵石地区施工不便等因素使其发展受到制约。根据成都京东方桩基工程实例,首先分析了湿法作业下旋挖成孔灌注桩后注浆工艺的施工技术要点,进而对后注浆工艺的注浆量、注浆压力、泥浆用量进行总结,最后,对桩端沉渣控制、填方地段施工工艺等工程问题的处理提出建议措施。
- 灌注桩 /
- 旋挖成孔 /
- 后注浆 /
- 湿法作业
Abstract: Because of good adaptability and speedy construction, rotary holing cast-in-place piles have been widely used in engineering fields, but the disadvantages of difficult sediment control and inconvenience for construction in areas with large-size gravels restrict its development.Based on the engineering case of BOECD, the key points of construction technology of post grouting for rotary holing cast-in-place pile by wet operation are firstly analyzed;then grouting capacity, grouting pres-sure and slurry amount of post grouting are summarized;finally, some suggestions are put forward for the engineering prob-lems such as hole bottom sediment control and fill section construction process, which may be helpful to the similar projects in the future.
- cast-in-place pile /
- rotary holing /
- post grouting /
- wet operation