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Static pressure hole-forming vibration impact solid sand and gravel expanding grouting and static pressure pile technology
The invention discloses a static pressure hole-forming vibration impact real sand and gravel expanding grouting and static pressure pile technology. The technology comprises the following steps that 1, construction preparation is conducted; step 2, positioning pile points; 3, static pressure hole guiding is conducted, specifically, static pressure pile holes are formed in the pile point positions; 4, vibroflotation coarse-grained soil compaction reaming is conducted, coarse-grained soil filler is added into static pressure pile holes, vibroflotation is conducted on the deep foundation to form a pebble reaming structure, and foundation soil is compacted; 5, layered compaction and cobble backfilling are carried out, gravel materials are backfilled into static pressure pile holes in a layered mode, gravel compaction piles are formed, and the gravel compaction piles are locally expanded in a layered mode; step 6, cobble backfilling and layered grouting; 7, static pressure pile sinking; the advantages of a prefabricated pipe pile and a backfill compaction pile are integrated, and a pile foundation structure with the pebble compaction grouting pile on the lower portion, the hollow prefabricated pipe pile on the upper portion, the locally-expanded pile diameter, the thin upper portion and the thick lower portion can be formed in loose soil sites such as loess.
本发明公开了一种静压成孔振冲击实砂卵石扩径注浆与静压桩技术，包括以下步骤：步骤1，施工准备；步骤2，桩点定位；步骤3，静压引孔，在桩点位置打设静压桩孔；步骤4，振冲粗粒土挤密扩孔，往静压桩孔中加入粗粒土填料，在深层地基振冲形成卵石扩孔结构，挤密地基土；步骤5，分层击实卵石回填，将砂石料分层回填至静压桩孔，形成砂石挤密桩，砂石挤密桩分层局部扩大；步骤6，卵石回填分层注浆；步骤7，静压沉桩；本发明集预制管桩、回填挤密桩优势于一体，能够在黄土等疏松土场地形成一种下部为卵石挤密注浆桩，上部为空心预制管桩，桩径呈局部扩径，上细下粗的桩基结构。
Static pressure hole-forming vibration impact solid sand and gravel expanding grouting and static pressure pile technology
The invention discloses a static pressure hole-forming vibration impact real sand and gravel expanding grouting and static pressure pile technology. The technology comprises the following steps that 1, construction preparation is conducted; step 2, positioning pile points; 3, static pressure hole guiding is conducted, specifically, static pressure pile holes are formed in the pile point positions; 4, vibroflotation coarse-grained soil compaction reaming is conducted, coarse-grained soil filler is added into static pressure pile holes, vibroflotation is conducted on the deep foundation to form a pebble reaming structure, and foundation soil is compacted; 5, layered compaction and cobble backfilling are carried out, gravel materials are backfilled into static pressure pile holes in a layered mode, gravel compaction piles are formed, and the gravel compaction piles are locally expanded in a layered mode; step 6, cobble backfilling and layered grouting; 7, static pressure pile sinking; the advantages of a prefabricated pipe pile and a backfill compaction pile are integrated, and a pile foundation structure with the pebble compaction grouting pile on the lower portion, the hollow prefabricated pipe pile on the upper portion, the locally-expanded pile diameter, the thin upper portion and the thick lower portion can be formed in loose soil sites such as loess.
本发明公开了一种静压成孔振冲击实砂卵石扩径注浆与静压桩技术，包括以下步骤：步骤1，施工准备；步骤2，桩点定位；步骤3，静压引孔，在桩点位置打设静压桩孔；步骤4，振冲粗粒土挤密扩孔，往静压桩孔中加入粗粒土填料，在深层地基振冲形成卵石扩孔结构，挤密地基土；步骤5，分层击实卵石回填，将砂石料分层回填至静压桩孔，形成砂石挤密桩，砂石挤密桩分层局部扩大；步骤6，卵石回填分层注浆；步骤7，静压沉桩；本发明集预制管桩、回填挤密桩优势于一体，能够在黄土等疏松土场地形成一种下部为卵石挤密注浆桩，上部为空心预制管桩，桩径呈局部扩径，上细下粗的桩基结构。
Static pressure hole-forming vibration impact solid sand and gravel expanding grouting and static pressure pile technology
一种静压成孔振冲击实砂卵石扩径注浆与静压桩技术
SHAO SHENGJUN (author) / MA XIAOWU (author) / WU JIANG (author) / SHAO SHUAI (author)
2024-02-02
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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