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A platform for research: civil engineering, architecture and urbanism
Tubular pile composite foundation suitable for deep collapsible loess site and construction method thereof
The invention discloses a tubular pile composite foundation suitable for a deep collapsible loess site and a construction method thereof. The tubular pile composite foundation comprises a plurality of settlement-reducing tubular piles, a reinforced mattress layer and a loess foundation layer, wherein each settlement-reducing tubular pile comprises a tubular pile, a pile cap, a grouting body and a connecting joint, and the grouting body is filled in the tubular pile and is formed with the surrounding soil body after overflowing; the pile cap is connected with the tubular pile; the reinforced mattress layer is arranged on the loess foundation layer; and the grouting body and the threaded section are embedded into the soil body, so that the tubular pile can be in contact with the surrounding soil body, the synergistic effect of the tubular pile and the soil between the piles is fully exerted, the bearing capacity of the pile body is remarkably improved, and the vertical bearing performance of the composite foundation is improved. The tubular pile composite foundation is simple and convenient to manufacture, material-saving, flexible in arrangement, rapid in construction, economical and reliable, and has good anti-sinking, anti-differential settlement and deformation coordination capabilities; and the construction method can improve and solve the technical problems of bearing capacity, deformation resistance and the like of the deep filling loess foundation.
本发明公开了一种适用于深厚湿陷性黄土场地的管桩复合地基及其施工方法，管桩复合地基包括多根减沉管桩、加筋褥垫层和黄土地基层，减沉管桩均包括管桩、桩帽、注浆体和连接接头，注浆体填充管桩内和溢出后与周围土体形成；桩帽与管桩连接；加筋褥垫层设置在黄土地基层上；注浆体和螺纹段嵌入土体，有利于管桩与周围土体接触，充分地发挥管桩‑桩间土协同作用，使桩体承载能力得到显著改善，提升了复合地基竖向承载性能。本发明的管桩复合地基制作简便、节省材料、布置灵活、施工快捷、经济可靠，具有较好的抗沉、抗不均匀沉降和变形协调能力；本发明施工方法能够改善和解决深厚填方黄土地基承载力和抗变形等技术难题。
Tubular pile composite foundation suitable for deep collapsible loess site and construction method thereof
The invention discloses a tubular pile composite foundation suitable for a deep collapsible loess site and a construction method thereof. The tubular pile composite foundation comprises a plurality of settlement-reducing tubular piles, a reinforced mattress layer and a loess foundation layer, wherein each settlement-reducing tubular pile comprises a tubular pile, a pile cap, a grouting body and a connecting joint, and the grouting body is filled in the tubular pile and is formed with the surrounding soil body after overflowing; the pile cap is connected with the tubular pile; the reinforced mattress layer is arranged on the loess foundation layer; and the grouting body and the threaded section are embedded into the soil body, so that the tubular pile can be in contact with the surrounding soil body, the synergistic effect of the tubular pile and the soil between the piles is fully exerted, the bearing capacity of the pile body is remarkably improved, and the vertical bearing performance of the composite foundation is improved. The tubular pile composite foundation is simple and convenient to manufacture, material-saving, flexible in arrangement, rapid in construction, economical and reliable, and has good anti-sinking, anti-differential settlement and deformation coordination capabilities; and the construction method can improve and solve the technical problems of bearing capacity, deformation resistance and the like of the deep filling loess foundation.
本发明公开了一种适用于深厚湿陷性黄土场地的管桩复合地基及其施工方法，管桩复合地基包括多根减沉管桩、加筋褥垫层和黄土地基层，减沉管桩均包括管桩、桩帽、注浆体和连接接头，注浆体填充管桩内和溢出后与周围土体形成；桩帽与管桩连接；加筋褥垫层设置在黄土地基层上；注浆体和螺纹段嵌入土体，有利于管桩与周围土体接触，充分地发挥管桩‑桩间土协同作用，使桩体承载能力得到显著改善，提升了复合地基竖向承载性能。本发明的管桩复合地基制作简便、节省材料、布置灵活、施工快捷、经济可靠，具有较好的抗沉、抗不均匀沉降和变形协调能力；本发明施工方法能够改善和解决深厚填方黄土地基承载力和抗变形等技术难题。
Tubular pile composite foundation suitable for deep collapsible loess site and construction method thereof
适用于深厚湿陷性黄土场地的管桩复合地基及其施工方法
QIU MINGMING (author) / MA SHILIN (author) / WANG HONGQI (author) / SUN JIELONG (author) / YANG HONGXIA (author) / LI SHENGBIN (author)
2021-11-23
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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