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Drainage cross beam and drainage reinforcing wall system between sand piles of immersed tunnel and construction method of drainage cross beam and drainage reinforcing wall system
The invention discloses an anti-floating reinforcing system for a drainage cross beam and a drainage reinforcing wall between underlying sandy soil piles of a seabed immersed tunnel. The reinforcing system comprises gravel piles, inter-pile drainage cross beams, drainage reinforced concrete reinforcing walls, a gravel hardcore, a backfill layer and an immersed tunnel. The gravel piles are vertically arrayed in the liquefiable sand foundation by a compaction method; a through hole is formed in the gravel pile, and a welding sleeve is mounted in the through hole; the drainage reinforced concrete reinforcing walls stand on the two opposite sides of the gravel pile array, hole sites are reserved, and welding sleeves are installed on the drainage reinforced concrete reinforcing walls. The inter-pile drainage cross beam penetrates through the welding sleeve of the gravel pile, and the two ends of the inter-pile drainage cross beam are connected to the welding sleeve of the drainage reinforced concrete reinforcing wall to be welded and fixed. The gravel hardcore is arranged on the gravel pile array; the immersed tube tunnel is arranged on the broken stone hardcore, and the two sides of the immersed tube tunnel are filled with backfill layers. According to the anti-floating reinforcing system and method for the composite foundation of the underlying liquefiable sand field of the submarine immersed tunnel, construction is easy and convenient, the construction period is short, cost is low, the bearing capacity and the anti-liquefaction capacity are high, and the economical and efficient anti-floating reinforcing system and method for the composite foundation of the underlying liquefiable sand field of the submarine immersed tunnel are provided.
本发明公开了一种海底沉管隧道下卧砂土桩间排水横梁和排水加固墙抗浮加固体系。该加固体系包括碎石桩、桩间排水横梁、排水钢筋混凝土加固墙、碎石垫层、回填层和沉管隧道；所述碎石桩竖向由挤密法阵列于可液化砂土地基中；碎石桩开有通孔，其中安装有焊接套筒；排水钢筋混凝土加固墙立于碎石桩阵列的相对的两侧，预留有孔位并安装有焊接套筒；所述桩间排水横梁穿过碎石桩的焊接套筒，两端连接到排水钢筋混凝土加固墙的焊接套筒，焊接固定；所述碎石垫层设置于碎石桩阵列至上；所述沉管隧道设置于碎石垫层上，两侧填有回填层。本发明施工简便、工期短、成本低，并且具有较高的承载力和抗液化能力，提供了一种经济高效的海底沉管隧道下卧可液化砂土场地复合地基抗浮加固体系及方法。
Drainage cross beam and drainage reinforcing wall system between sand piles of immersed tunnel and construction method of drainage cross beam and drainage reinforcing wall system
The invention discloses an anti-floating reinforcing system for a drainage cross beam and a drainage reinforcing wall between underlying sandy soil piles of a seabed immersed tunnel. The reinforcing system comprises gravel piles, inter-pile drainage cross beams, drainage reinforced concrete reinforcing walls, a gravel hardcore, a backfill layer and an immersed tunnel. The gravel piles are vertically arrayed in the liquefiable sand foundation by a compaction method; a through hole is formed in the gravel pile, and a welding sleeve is mounted in the through hole; the drainage reinforced concrete reinforcing walls stand on the two opposite sides of the gravel pile array, hole sites are reserved, and welding sleeves are installed on the drainage reinforced concrete reinforcing walls. The inter-pile drainage cross beam penetrates through the welding sleeve of the gravel pile, and the two ends of the inter-pile drainage cross beam are connected to the welding sleeve of the drainage reinforced concrete reinforcing wall to be welded and fixed. The gravel hardcore is arranged on the gravel pile array; the immersed tube tunnel is arranged on the broken stone hardcore, and the two sides of the immersed tube tunnel are filled with backfill layers. According to the anti-floating reinforcing system and method for the composite foundation of the underlying liquefiable sand field of the submarine immersed tunnel, construction is easy and convenient, the construction period is short, cost is low, the bearing capacity and the anti-liquefaction capacity are high, and the economical and efficient anti-floating reinforcing system and method for the composite foundation of the underlying liquefiable sand field of the submarine immersed tunnel are provided.
本发明公开了一种海底沉管隧道下卧砂土桩间排水横梁和排水加固墙抗浮加固体系。该加固体系包括碎石桩、桩间排水横梁、排水钢筋混凝土加固墙、碎石垫层、回填层和沉管隧道；所述碎石桩竖向由挤密法阵列于可液化砂土地基中；碎石桩开有通孔，其中安装有焊接套筒；排水钢筋混凝土加固墙立于碎石桩阵列的相对的两侧，预留有孔位并安装有焊接套筒；所述桩间排水横梁穿过碎石桩的焊接套筒，两端连接到排水钢筋混凝土加固墙的焊接套筒，焊接固定；所述碎石垫层设置于碎石桩阵列至上；所述沉管隧道设置于碎石垫层上，两侧填有回填层。本发明施工简便、工期短、成本低，并且具有较高的承载力和抗液化能力，提供了一种经济高效的海底沉管隧道下卧可液化砂土场地复合地基抗浮加固体系及方法。
Drainage cross beam and drainage reinforcing wall system between sand piles of immersed tunnel and construction method of drainage cross beam and drainage reinforcing wall system
沉管隧道砂土桩间排水横梁和排水加固墙体系及施工方法
ZHENG YEWEI (author) / ZHOU HUANZHU (author) / ZHENG JUNJIE (author) / JI MINGCHANG (author) / LIU SHENGAN (author)
2024-01-19
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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