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Post-grouting pervious concrete tubular pile and construction method thereof
The invention relates to the technical field of geotechnical engineering, and discloses a post-grouting pervious concrete tubular pile and a construction method thereof. The post-grouting pervious concrete tubular pile comprises a prefabricated pervious concrete tubular pile body, a grout consolidation layer and a soil mass consolidation layer, wherein the grout consolidation layer is fixedly connected into a prefabricated pervious concrete tubular pile body inner hole, and the soil mass consolidation layer is arranged on the peripheral of the prefabricated pervious concrete tubular pile body.The construction method comprises the steps that (1) drilling machine hole-forming id carried out to obtain a pile hole; (2) the prefabricated pervious tubular pile body is implanted in the pile hole; (3) a grouting pipe is inserted into the prefabricated pervious tubular pile body, and low-pressure grouting is carried out in the prefabricated pervious tubular pile body inner hole through the grouting pipe, so that the prefabricated pervious tubular pile body inner hole is filled with grouts; and (4) a prefabricated pervious tubular pile body inner hole opening is closed, high-pressure grouting is carried out through the grouting pipe, a part of grouts permeate to the outer side of the tubular pile from the pipe wall of the prefabricated pervious tubular pile body, enter a gas between theprefabricated pervious tubular pile body and the pile hole and a soil mass around the pile hole, and the other part of grouts are left in the prefabricated pervious tubular pile body inner hole. Thepost-grouting pervious concrete tubular pile has high strength and high bearing capacity of a single pile.
本发明涉及岩土工程技术领域，公开了一种后注浆透水混凝土管桩及其施工方法。后注浆透水混凝土管桩包括预制透水混凝土管桩、固接在预制透水混凝土管桩内孔中的浆液固结层和设在预制透水混凝土管桩外围的土体固结层。其施工方法为：1）钻机成孔，得到桩孔；2）向桩孔中植入预制透水管桩；3）向预制透水管桩中插入注浆管，通过注浆管向预制透水管桩内孔中进行低压注浆，使浆液充满预制透水管桩内孔；4）封闭预制透水管桩内孔孔口，通过注浆管进行高压注浆，部分浆液由预制透水管桩管壁向管桩外侧渗透，进入预制透水管桩与桩孔之间的间隙中以及桩孔周围土体中，部分浆液留在预制透水管桩内孔中。该后注浆透水混凝土管桩强度高，单桩承载力强。
Post-grouting pervious concrete tubular pile and construction method thereof
The invention relates to the technical field of geotechnical engineering, and discloses a post-grouting pervious concrete tubular pile and a construction method thereof. The post-grouting pervious concrete tubular pile comprises a prefabricated pervious concrete tubular pile body, a grout consolidation layer and a soil mass consolidation layer, wherein the grout consolidation layer is fixedly connected into a prefabricated pervious concrete tubular pile body inner hole, and the soil mass consolidation layer is arranged on the peripheral of the prefabricated pervious concrete tubular pile body.The construction method comprises the steps that (1) drilling machine hole-forming id carried out to obtain a pile hole; (2) the prefabricated pervious tubular pile body is implanted in the pile hole; (3) a grouting pipe is inserted into the prefabricated pervious tubular pile body, and low-pressure grouting is carried out in the prefabricated pervious tubular pile body inner hole through the grouting pipe, so that the prefabricated pervious tubular pile body inner hole is filled with grouts; and (4) a prefabricated pervious tubular pile body inner hole opening is closed, high-pressure grouting is carried out through the grouting pipe, a part of grouts permeate to the outer side of the tubular pile from the pipe wall of the prefabricated pervious tubular pile body, enter a gas between theprefabricated pervious tubular pile body and the pile hole and a soil mass around the pile hole, and the other part of grouts are left in the prefabricated pervious tubular pile body inner hole. Thepost-grouting pervious concrete tubular pile has high strength and high bearing capacity of a single pile.
本发明涉及岩土工程技术领域，公开了一种后注浆透水混凝土管桩及其施工方法。后注浆透水混凝土管桩包括预制透水混凝土管桩、固接在预制透水混凝土管桩内孔中的浆液固结层和设在预制透水混凝土管桩外围的土体固结层。其施工方法为：1）钻机成孔，得到桩孔；2）向桩孔中植入预制透水管桩；3）向预制透水管桩中插入注浆管，通过注浆管向预制透水管桩内孔中进行低压注浆，使浆液充满预制透水管桩内孔；4）封闭预制透水管桩内孔孔口，通过注浆管进行高压注浆，部分浆液由预制透水管桩管壁向管桩外侧渗透，进入预制透水管桩与桩孔之间的间隙中以及桩孔周围土体中，部分浆液留在预制透水管桩内孔中。该后注浆透水混凝土管桩强度高，单桩承载力强。
Post-grouting pervious concrete tubular pile and construction method thereof
一种后注浆透水混凝土管桩及其施工方法
ZHOU TONGHE (author) / GAO WEI (author) / QI RUIWEN (author)
2020-04-28
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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