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Dense pile group deepwater bearing platform double-wall steel hanging box cofferdam construction process
The invention relates to the technical field of cofferdam construction, in particular to a dense pile group deepwater bearing platform double-wall steel hanging box cofferdam construction process. The dense pile group deepwater bearing platform double-wall steel hanging box cofferdam construction process comprises the following steps that A, construction preparation is carried out, specifically, a drilling pile steel casing is cut off, and a drilling platform is dismantled; B, a cofferdam bottom plate is assembled, specifically, bottom plate unit blocks are hoisted one by one by adopting a symmetry method, all the bottom plate unit blocks are assembled to form the bottom plate, and the steel casing penetrates through through holes in the bottom plate unit blocks, C, cofferdam side plates are assembled; D, cofferdam bottom sealing concrete is poured; and E, water is pumped, a cofferdam forth bearing system is converted, and a bearing platform is constructed, an anti-torque mechanism is arranged on each bottom plate unit block and comprises a plurality of inclined supporting frames, and the inclined supporting frames are arranged between transverse keels and longitudinal keels of the bottom plate unit blocks. According to the scheme, the anti-torque mechanisms are arranged on the bottom plate, and therefore the anti-torque performance of the bottom plate can be improved, the keel bearing capacity is improved, and the structural strength of the whole bottom plate is improved.
本发明涉及围堰施工技术领域，具体为密集桩群深水承台双壁钢吊箱围堰施工工艺，包括如下步骤：A、施工准备：割除钻孔桩钢护筒，拆除钻孔平台；B、拼装围堰底板：采用对称法逐块吊装底板单元块，各底板单元块拼装形成底板，钢护筒从底板单元块上的通孔穿过；C、拼装围堰侧板；D、浇筑围堰封底混凝土；E、抽水、围堰受力体系转换、承台施工；底板单元块上设置有抗扭矩机构，抗扭矩机构包括若干斜撑架，斜撑架设置在底板单元块的横龙骨和纵龙骨之间。本方案通过在底板上设置抗扭矩机构能够提高底板的抗扭矩性能，提高龙骨承载力，提高整个底板的结构强度。
Dense pile group deepwater bearing platform double-wall steel hanging box cofferdam construction process
The invention relates to the technical field of cofferdam construction, in particular to a dense pile group deepwater bearing platform double-wall steel hanging box cofferdam construction process. The dense pile group deepwater bearing platform double-wall steel hanging box cofferdam construction process comprises the following steps that A, construction preparation is carried out, specifically, a drilling pile steel casing is cut off, and a drilling platform is dismantled; B, a cofferdam bottom plate is assembled, specifically, bottom plate unit blocks are hoisted one by one by adopting a symmetry method, all the bottom plate unit blocks are assembled to form the bottom plate, and the steel casing penetrates through through holes in the bottom plate unit blocks, C, cofferdam side plates are assembled; D, cofferdam bottom sealing concrete is poured; and E, water is pumped, a cofferdam forth bearing system is converted, and a bearing platform is constructed, an anti-torque mechanism is arranged on each bottom plate unit block and comprises a plurality of inclined supporting frames, and the inclined supporting frames are arranged between transverse keels and longitudinal keels of the bottom plate unit blocks. According to the scheme, the anti-torque mechanisms are arranged on the bottom plate, and therefore the anti-torque performance of the bottom plate can be improved, the keel bearing capacity is improved, and the structural strength of the whole bottom plate is improved.
本发明涉及围堰施工技术领域，具体为密集桩群深水承台双壁钢吊箱围堰施工工艺，包括如下步骤：A、施工准备：割除钻孔桩钢护筒，拆除钻孔平台；B、拼装围堰底板：采用对称法逐块吊装底板单元块，各底板单元块拼装形成底板，钢护筒从底板单元块上的通孔穿过；C、拼装围堰侧板；D、浇筑围堰封底混凝土；E、抽水、围堰受力体系转换、承台施工；底板单元块上设置有抗扭矩机构，抗扭矩机构包括若干斜撑架，斜撑架设置在底板单元块的横龙骨和纵龙骨之间。本方案通过在底板上设置抗扭矩机构能够提高底板的抗扭矩性能，提高龙骨承载力，提高整个底板的结构强度。
Dense pile group deepwater bearing platform double-wall steel hanging box cofferdam construction process
密集桩群深水承台双壁钢吊箱围堰施工工艺
WANG SIWEN (author) / CHENG GANGJIE (author) / JI XUCHAO (author) / REN CHUJUN (author) / LIU PENG (author)
2021-07-20
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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