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A platform for research: civil engineering, architecture and urbanism
Offshore platform large-diameter hectometer socketed pile combined pile-forming construction method
The invention relates to the technical field of large-diameter socketed piles, and discloses an offshore platform large-diameter hectometer socketed pile combined pile forming construction method which comprises the following construction steps: 1) determining the position of a pile position on an offshore platform; (2) a casing pipe is sunken in the pile position, then a soil body in the casing pipe is grabbed, and a soil layer hole section is formed in the casing pipe; (3) the rock stratum is drilled to form a rock stratum hole section, and the rock stratum hole section communicates with the soil layer hole section to form a pile hole; (4) a reinforcement cage is put into the pile hole, concrete is poured, and a rock-socketed pile is formed; and a plurality of resistance reducing strips are arranged on the outer side wall of the sleeve. The ultra-long sleeve is lowered to abut against the rock surface, so that wall protection of the whole sleeve of the soil layer is achieved, the problem of hole collapse of the soft stratum is avoided, meanwhile, through the design of the resistance reducing strip, in the sinking process of the sleeve, contact friction between the sleeve and the soil body is changed into cutting between the resistance reducing strip and the soil body, and therefore the side friction resistance between the sleeve and the soil body is reduced.
本发明涉及大直径嵌岩桩的技术领域，公开了海上平台大直径百米嵌岩桩组合成桩施工方法，包括以下施工步骤：1)、在海上平台上确定桩位的位置；2)、在桩位中下沉套管，再抓取套管内的土体，套管中形成土层孔段；3)、对岩层钻进形成岩层孔段，岩层孔段与土层孔段连通形成桩孔；4)、在桩孔中下入钢筋笼，灌注混凝土，形成嵌岩桩；套管的外侧壁上设有多个减阻条。通过将超长的套管下放至抵接在岩面上，从而实现土层全套管护壁，避免了软弱地层塌孔的问题，同时通过减阻条的设计，在套管下沉的过程中，使套管与土体之间的接触摩擦改为减阻条与土体的切削，从而减小套管与土体的侧摩阻力。
Offshore platform large-diameter hectometer socketed pile combined pile-forming construction method
The invention relates to the technical field of large-diameter socketed piles, and discloses an offshore platform large-diameter hectometer socketed pile combined pile forming construction method which comprises the following construction steps: 1) determining the position of a pile position on an offshore platform; (2) a casing pipe is sunken in the pile position, then a soil body in the casing pipe is grabbed, and a soil layer hole section is formed in the casing pipe; (3) the rock stratum is drilled to form a rock stratum hole section, and the rock stratum hole section communicates with the soil layer hole section to form a pile hole; (4) a reinforcement cage is put into the pile hole, concrete is poured, and a rock-socketed pile is formed; and a plurality of resistance reducing strips are arranged on the outer side wall of the sleeve. The ultra-long sleeve is lowered to abut against the rock surface, so that wall protection of the whole sleeve of the soil layer is achieved, the problem of hole collapse of the soft stratum is avoided, meanwhile, through the design of the resistance reducing strip, in the sinking process of the sleeve, contact friction between the sleeve and the soil body is changed into cutting between the resistance reducing strip and the soil body, and therefore the side friction resistance between the sleeve and the soil body is reduced.
本发明涉及大直径嵌岩桩的技术领域，公开了海上平台大直径百米嵌岩桩组合成桩施工方法，包括以下施工步骤：1)、在海上平台上确定桩位的位置；2)、在桩位中下沉套管，再抓取套管内的土体，套管中形成土层孔段；3)、对岩层钻进形成岩层孔段，岩层孔段与土层孔段连通形成桩孔；4)、在桩孔中下入钢筋笼，灌注混凝土，形成嵌岩桩；套管的外侧壁上设有多个减阻条。通过将超长的套管下放至抵接在岩面上，从而实现土层全套管护壁，避免了软弱地层塌孔的问题，同时通过减阻条的设计，在套管下沉的过程中，使套管与土体之间的接触摩擦改为减阻条与土体的切削，从而减小套管与土体的侧摩阻力。
Offshore platform large-diameter hectometer socketed pile combined pile-forming construction method
海上平台大直径百米嵌岩桩组合成桩施工方法
FENG DONGDONG (author) / WANG TONG (author) / WANG GANG (author) / LIAO QIMING (author) / LEI BIN (author) / XIAO YANGBING (author) / LIN ZHIHAO (author) / XIAO MU (author) / CHEN CHAOYANG (author) / LI SHUQING (author)
2023-09-08
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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