A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pile foundation structure of large cavity karst area and construction method of pile foundation structure
The invention provides a pile foundation structure of a large cavity karst area. The pile foundation structure comprises a plurality of outer-layer pile bodies which are coaxially overlapped, the grout conveying pipelines are arranged on the outer-layer pile bodies and comprise annular pipes arranged in the outer-layer pile bodies and grouting pipes connected with the annular pipes, the two ends of each annular pipe are open to form a grout conveying channel used for conveying grout, and a plurality of grout outlet pipes penetrating to the grout conveying channel are arranged on the peripheral side of each annular pipe; the two ends of the annular pipe and the slurry outlet pipes penetrate through the outer-layer pile body. And the grouting pipe penetrates through the grouting pipe and is used for feeding grout into the grouting pipe. The prefabricated outer-layer pile body does not need to sink a reinforcement cage on site, so that the site workload is reduced, and site management is facilitated; and secondly, a two-layer pile casing is not needed, the influence of the construction of the two-layer pile casing on the pile forming quality is avoided, so that the construction difficulty is reduced, the construction quality is ensured, the outer-layer pile body can also be suitable for the working condition of a multi-layer dissolved cavity, and the applicability is wider.
本发明提供了一种大型空洞岩溶地区的桩基结构，包括：同轴线重叠的若干外层桩体；设于若干外层桩体的浆液输送管道，浆液输送管道包括设于外层桩体内的环形管和与环形管相连的注浆管，环形管两端开口以形成用于输送浆液的输浆通道，环形管周侧设有贯穿至输浆通道的若干出浆管，环形管的两端和各个出浆管均穿设于外层桩体；以及压浆管，穿设于注浆管，用于送入浆液至注浆管。预制的外层桩体无需在现场下沉钢筋笼，减少了现场工作量，便于现场管理；其次还不需要二层护筒，避免二层护筒施工对成桩质量的影响，从而降低了施工难度，确保了施工质量，并且，外层桩体也能适用于多层溶腔空洞工况中，适用性更广。
Pile foundation structure of large cavity karst area and construction method of pile foundation structure
The invention provides a pile foundation structure of a large cavity karst area. The pile foundation structure comprises a plurality of outer-layer pile bodies which are coaxially overlapped, the grout conveying pipelines are arranged on the outer-layer pile bodies and comprise annular pipes arranged in the outer-layer pile bodies and grouting pipes connected with the annular pipes, the two ends of each annular pipe are open to form a grout conveying channel used for conveying grout, and a plurality of grout outlet pipes penetrating to the grout conveying channel are arranged on the peripheral side of each annular pipe; the two ends of the annular pipe and the slurry outlet pipes penetrate through the outer-layer pile body. And the grouting pipe penetrates through the grouting pipe and is used for feeding grout into the grouting pipe. The prefabricated outer-layer pile body does not need to sink a reinforcement cage on site, so that the site workload is reduced, and site management is facilitated; and secondly, a two-layer pile casing is not needed, the influence of the construction of the two-layer pile casing on the pile forming quality is avoided, so that the construction difficulty is reduced, the construction quality is ensured, the outer-layer pile body can also be suitable for the working condition of a multi-layer dissolved cavity, and the applicability is wider.
本发明提供了一种大型空洞岩溶地区的桩基结构，包括：同轴线重叠的若干外层桩体；设于若干外层桩体的浆液输送管道，浆液输送管道包括设于外层桩体内的环形管和与环形管相连的注浆管，环形管两端开口以形成用于输送浆液的输浆通道，环形管周侧设有贯穿至输浆通道的若干出浆管，环形管的两端和各个出浆管均穿设于外层桩体；以及压浆管，穿设于注浆管，用于送入浆液至注浆管。预制的外层桩体无需在现场下沉钢筋笼，减少了现场工作量，便于现场管理；其次还不需要二层护筒，避免二层护筒施工对成桩质量的影响，从而降低了施工难度，确保了施工质量，并且，外层桩体也能适用于多层溶腔空洞工况中，适用性更广。
Pile foundation structure of large cavity karst area and construction method of pile foundation structure
一种大型空洞岩溶地区的桩基结构及其施工方法
DIAO NAIHAO (author) / WEN ZHONGXING (author) / GUO JUNFENG (author) / ZHANG QIAO (author) / CAO HAIQING (author) / ZENG YINYONG (author) / WU TINGYAO (author) / MA LIZE (author) / LUO SEN (author) / NI YICAI (author)
2024-04-09
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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