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Controllable rigid pile and squeezed gravel pile combined composite foundation and construction method thereof
The invention discloses a controllable rigid pile and squeezed gravel pile combined composite foundation and a construction method of the controllable rigid pile and squeezed gravel pile combined composite foundation. The foundation comprises a soft soil foundation, a sand cushion layer laid on the soft soil foundation and a drainage ditch arranged on the outer side of the sand cushion layer. Thesoft soil foundation is internally provided with a plurality of rigid piles. The rigid piles are provided with a sleeve. The top end of the sleeve extends upwards to the top surface of the sand cushion layer. A rigid pile sleeves the contracted bottom end of the sleeve. The sleeve is respectively connected with a slurry injecting pipeline and a slurry discharging pipeline. Cement slurry is injected into the sleeve. A cover plate is arranged on the sleeve. A plurality of gravel piles are uniformly arranged in the sand cushion layer around the cover plate. The top ends of the gravel piles are flush with the top surface of the sand cushion layer. The bottom ends of the gravel piles penetrate through the sand cushion layer and extend into the soft soil layer. The controllable rigid pile and squeezed gravel pile combined composite foundation can enable the maximum and minimum main stress difference and the shear stress of foundation soil to be reduced, and the foundation stability is improved.
本发明公开了一种可控刚性桩与挤密砂石桩组合型复合地基及其施工方法，该地基包括软土地基、铺设在软土地基上的砂垫层以及设置在砂垫层外侧的排水沟；所述软土地基内设置有多根刚性桩；所述刚性桩上设有套筒，所述套筒的顶端向上延伸至砂垫层顶面，所述套筒的底端缩口套紧刚性桩；所述套筒分别连接注浆管路和排浆管路；所述套筒内注入有水泥浆料，且所述套筒上设置有盖板；所述盖板周围的砂垫层内均匀设置有多根砂石桩，所述砂石桩的顶端与砂垫层顶面平齐，所述砂石桩的底端贯穿砂垫层后延伸到软土层内。本发明的可控刚性桩与挤密砂石桩组合型复合地基可以使地基土的最大‑最小主应力差和剪应力均减小，提高地基稳定性。
Controllable rigid pile and squeezed gravel pile combined composite foundation and construction method thereof
The invention discloses a controllable rigid pile and squeezed gravel pile combined composite foundation and a construction method of the controllable rigid pile and squeezed gravel pile combined composite foundation. The foundation comprises a soft soil foundation, a sand cushion layer laid on the soft soil foundation and a drainage ditch arranged on the outer side of the sand cushion layer. Thesoft soil foundation is internally provided with a plurality of rigid piles. The rigid piles are provided with a sleeve. The top end of the sleeve extends upwards to the top surface of the sand cushion layer. A rigid pile sleeves the contracted bottom end of the sleeve. The sleeve is respectively connected with a slurry injecting pipeline and a slurry discharging pipeline. Cement slurry is injected into the sleeve. A cover plate is arranged on the sleeve. A plurality of gravel piles are uniformly arranged in the sand cushion layer around the cover plate. The top ends of the gravel piles are flush with the top surface of the sand cushion layer. The bottom ends of the gravel piles penetrate through the sand cushion layer and extend into the soft soil layer. The controllable rigid pile and squeezed gravel pile combined composite foundation can enable the maximum and minimum main stress difference and the shear stress of foundation soil to be reduced, and the foundation stability is improved.
本发明公开了一种可控刚性桩与挤密砂石桩组合型复合地基及其施工方法，该地基包括软土地基、铺设在软土地基上的砂垫层以及设置在砂垫层外侧的排水沟；所述软土地基内设置有多根刚性桩；所述刚性桩上设有套筒，所述套筒的顶端向上延伸至砂垫层顶面，所述套筒的底端缩口套紧刚性桩；所述套筒分别连接注浆管路和排浆管路；所述套筒内注入有水泥浆料，且所述套筒上设置有盖板；所述盖板周围的砂垫层内均匀设置有多根砂石桩，所述砂石桩的顶端与砂垫层顶面平齐，所述砂石桩的底端贯穿砂垫层后延伸到软土层内。本发明的可控刚性桩与挤密砂石桩组合型复合地基可以使地基土的最大‑最小主应力差和剪应力均减小，提高地基稳定性。
Controllable rigid pile and squeezed gravel pile combined composite foundation and construction method thereof
一种可控刚性桩与挤密砂石桩组合型复合地基及其施工方法
ZHOU ZHIJUN (author) / WU ZHIRONG (author) / DENG XING'ER (author)
2020-07-07
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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