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Composite pile foundation structure and construction method thereof
The invention discloses a composite pile foundation structure and a construction method thereof. The composite pile foundation structure comprises a bearing platform, a prefabricated tubular pile anda cement layer wrapping the prefabricated tubular pile in a cast-in-place mode, the bearing platform is arranged at the top of the prefabricated tubular pile, the cement layer and the prefabricated tubular pile are coaxially arranged, and the diameter of the cement layer is 200-400 mm larger than that of the prefabricated tubular pile. Cast-in-place is conducted through rotary drilling hole guiding, grouting and pile pressing construction methods, and according to the composite pile foundation structure, a concrete tubular pile and a traditional cast-in-place pile are effectively combined. Theadvantages of high strength of the prefabricated pile and the rotary drilling hole guiding of the cast-in-place pile are fully utilized, and the problems that the cast-in-place pile is long and low in bearing capacity, and the prefabricated pile cannot enter rocks are solved. Compared with a single cast-in-place pile and a single prefabricated pile, the structure has obvious advantages in the aspects of construction quality, construction period and engineering investment.
本发明公开了一种复合桩基结构及其施工方法，所述复合桩基结构包括承台、预制管桩及通过现浇方式包裹在预制管桩外的水泥层，所述承台设置在预制管桩顶部，所述水泥层与预制管桩同轴设置，水泥层直径比预制管桩直径大200‑400mm。采用旋挖引孔、注浆、压桩施工方法进行现场浇筑，本复合桩基结构将混凝土管桩与传统灌注桩的有效结合。充分利用了预制桩高强和灌注桩旋挖引孔的优点，解决灌注桩桩长较长、承载力低和预制桩无法入岩的难点。在施工质量、施工周期及工程投资方面比单一的灌注桩和预制桩有明显的优势。
Composite pile foundation structure and construction method thereof
The invention discloses a composite pile foundation structure and a construction method thereof. The composite pile foundation structure comprises a bearing platform, a prefabricated tubular pile anda cement layer wrapping the prefabricated tubular pile in a cast-in-place mode, the bearing platform is arranged at the top of the prefabricated tubular pile, the cement layer and the prefabricated tubular pile are coaxially arranged, and the diameter of the cement layer is 200-400 mm larger than that of the prefabricated tubular pile. Cast-in-place is conducted through rotary drilling hole guiding, grouting and pile pressing construction methods, and according to the composite pile foundation structure, a concrete tubular pile and a traditional cast-in-place pile are effectively combined. Theadvantages of high strength of the prefabricated pile and the rotary drilling hole guiding of the cast-in-place pile are fully utilized, and the problems that the cast-in-place pile is long and low in bearing capacity, and the prefabricated pile cannot enter rocks are solved. Compared with a single cast-in-place pile and a single prefabricated pile, the structure has obvious advantages in the aspects of construction quality, construction period and engineering investment.
本发明公开了一种复合桩基结构及其施工方法，所述复合桩基结构包括承台、预制管桩及通过现浇方式包裹在预制管桩外的水泥层，所述承台设置在预制管桩顶部，所述水泥层与预制管桩同轴设置，水泥层直径比预制管桩直径大200‑400mm。采用旋挖引孔、注浆、压桩施工方法进行现场浇筑，本复合桩基结构将混凝土管桩与传统灌注桩的有效结合。充分利用了预制桩高强和灌注桩旋挖引孔的优点，解决灌注桩桩长较长、承载力低和预制桩无法入岩的难点。在施工质量、施工周期及工程投资方面比单一的灌注桩和预制桩有明显的优势。
Composite pile foundation structure and construction method thereof
一种复合桩基结构及其施工方法
XU JIAN (author) / LI DALANG (author) / LIU HAO (author) / ZOU MINGLI (author) / YUAN KUN (author)
2021-01-29
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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