Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of submarine immersed tunnel pipe joint
The invention relates to a construction method of a seabed immersed tunnel pipe joint. The construction method comprises the following steps that slope excavation is conducted on a seabed to form a foundation trench; high-pressure jet grouting piles are constructed at the bottom of the foundation trench, and immersed tubes are hung at the bottom of the foundation trench; wherein at least part of the high-pressure jet grouting piles are supported at the bottom of the immersed tube; rigid piles are constructed at the bottom of the foundation trench, and the rigid piles are supported on the two opposite side walls of the immersed tube; and backfilling and compacting the foundation trench to finish the construction of the immersed tube. The rigid piles are driven into the two opposite sides of the immersed tube, the immersed tube is protected against overturning damage, foundation soil around the rigid piles can be in transverse extrusion, and the rigid piles and the high-pressure jet grouting piles jointly achieve the compaction effect on a foundation. And meanwhile, the rigid piles and the high-pressure jet grouting piles have the replacement effect on foundation soil, bear loads together with the foundation soil and are stressed cooperatively, the advantages of being low in cost, convenient and fast to construct, high in bearing capacity, good in anti-seismic property, good in anti-floating capacity and the like are achieved, and the problem of differential settlement of the immersed tube can be effectively solved.
本发明涉及一种海底沉管隧道管节的施工方法，其包括以下步骤：在海床进行放坡开挖形成基槽；在基槽底部施工高压旋喷桩，并在基槽的底部吊放沉管；其中，至少部分数量的高压旋喷桩支撑于沉管的底部；在基槽的底部施工刚性桩，使刚性桩支撑于沉管的相对两侧壁；对基槽内进行回填压实，完成沉管的施工。刚性桩打入沉管的相对两侧，保护沉管不受倾覆破坏，可以使刚性桩周围的地基土处于横向挤压中，与高压旋喷桩共同对地基起到挤密的作用；同时，刚性桩以及高压旋喷桩均有对地基土的置换作用，与地基土共同承担荷载，协同受力，具有成本低、施工便捷、承载力较高、抗震性能较好，抗浮能力好等优点，能够有效改善沉管不均匀沉降的问题。
Construction method of submarine immersed tunnel pipe joint
The invention relates to a construction method of a seabed immersed tunnel pipe joint. The construction method comprises the following steps that slope excavation is conducted on a seabed to form a foundation trench; high-pressure jet grouting piles are constructed at the bottom of the foundation trench, and immersed tubes are hung at the bottom of the foundation trench; wherein at least part of the high-pressure jet grouting piles are supported at the bottom of the immersed tube; rigid piles are constructed at the bottom of the foundation trench, and the rigid piles are supported on the two opposite side walls of the immersed tube; and backfilling and compacting the foundation trench to finish the construction of the immersed tube. The rigid piles are driven into the two opposite sides of the immersed tube, the immersed tube is protected against overturning damage, foundation soil around the rigid piles can be in transverse extrusion, and the rigid piles and the high-pressure jet grouting piles jointly achieve the compaction effect on a foundation. And meanwhile, the rigid piles and the high-pressure jet grouting piles have the replacement effect on foundation soil, bear loads together with the foundation soil and are stressed cooperatively, the advantages of being low in cost, convenient and fast to construct, high in bearing capacity, good in anti-seismic property, good in anti-floating capacity and the like are achieved, and the problem of differential settlement of the immersed tube can be effectively solved.
本发明涉及一种海底沉管隧道管节的施工方法，其包括以下步骤：在海床进行放坡开挖形成基槽；在基槽底部施工高压旋喷桩，并在基槽的底部吊放沉管；其中，至少部分数量的高压旋喷桩支撑于沉管的底部；在基槽的底部施工刚性桩，使刚性桩支撑于沉管的相对两侧壁；对基槽内进行回填压实，完成沉管的施工。刚性桩打入沉管的相对两侧，保护沉管不受倾覆破坏，可以使刚性桩周围的地基土处于横向挤压中，与高压旋喷桩共同对地基起到挤密的作用；同时，刚性桩以及高压旋喷桩均有对地基土的置换作用，与地基土共同承担荷载，协同受力，具有成本低、施工便捷、承载力较高、抗震性能较好，抗浮能力好等优点，能够有效改善沉管不均匀沉降的问题。
Construction method of submarine immersed tunnel pipe joint
一种海底沉管隧道管节的施工方法
ZHENG YEWEI (Autor:in) / LIU SHENGAN (Autor:in) / ZHOU HUANZHU (Autor:in) / ZHENG JUNJIE (Autor:in) / JI MINGCHANG (Autor:in)
17.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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