A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Double-layer jet grouting stiffening core composite pile of bag extrusion expansion body and construction method and device of double-layer jet grouting stiffening core composite pile
The invention discloses a double-layer jet grouting stiffening core composite pile of a bag extrusion expansion body and a construction method and device of the double-layer jet grouting stiffening core composite pile. The double-layer jet grouting stiffening core composite pile comprises a pile pipe, and a plurality of guniting openings and lateral stirring blades are arranged at the bottom of the pile pipe; a sleeve is arranged on the inner side of the pile pipe, a first grouting piece and a second grouting piece are installed between the pile pipe and the sleeve, and the first grouting piece and the second grouting piece communicate with the guniting opening; the first grouting piece and the second grouting piece are fixedly connected with the pile pipe and rotationally connected with the sleeve. A drainage plate is installed on the inner side of the sleeve in the circumferential direction, and an air bag is installed on the inner side of the drainage plate. The air bags are arranged along the full length of the pile body, so that the full length of the second stirring body can be extruded and expanded according to the design requirement of the bearing capacity of the pile foundation in combination with the construction method, the diameter of the pile body is increased, the frictional resistance of a pile side interface is greatly improved, and the bearing capacity of the pile foundation is greatly improved. After the air bag is recycled, a stiffening core is formed in the center of the stirring body, the strength and rigidity of the pile body are improved, and pile foundation settlement is reduced.
本发明公开了一种囊袋挤压扩体的双层旋喷劲芯复合桩及其施工方法和装置，包括桩管，桩管底部设置若干个喷浆口和侧向搅拌叶片；桩管内侧设置有套管，桩管和套管之间安装有第一注浆件和第二注浆件，第一注浆件和第二注浆件与喷浆口连通；第一注浆件和第二注浆件与桩管固定连接，与套管旋转连接；套管内侧沿周向安装有排水板，排水板内侧安装有气囊。本发明沿桩体全长布置气囊，这样可以根据桩基承载力设计要求，结合本发明施工方法，对第二搅拌体的全长进行挤压扩体，从而增大桩体直径并大幅提高桩侧界面摩阻力，由此大幅提升桩基承载力。气囊回收后，在搅拌体中心施工形成劲芯，增大了桩体的强度和刚度，进而减小桩基沉降。
Double-layer jet grouting stiffening core composite pile of bag extrusion expansion body and construction method and device of double-layer jet grouting stiffening core composite pile
The invention discloses a double-layer jet grouting stiffening core composite pile of a bag extrusion expansion body and a construction method and device of the double-layer jet grouting stiffening core composite pile. The double-layer jet grouting stiffening core composite pile comprises a pile pipe, and a plurality of guniting openings and lateral stirring blades are arranged at the bottom of the pile pipe; a sleeve is arranged on the inner side of the pile pipe, a first grouting piece and a second grouting piece are installed between the pile pipe and the sleeve, and the first grouting piece and the second grouting piece communicate with the guniting opening; the first grouting piece and the second grouting piece are fixedly connected with the pile pipe and rotationally connected with the sleeve. A drainage plate is installed on the inner side of the sleeve in the circumferential direction, and an air bag is installed on the inner side of the drainage plate. The air bags are arranged along the full length of the pile body, so that the full length of the second stirring body can be extruded and expanded according to the design requirement of the bearing capacity of the pile foundation in combination with the construction method, the diameter of the pile body is increased, the frictional resistance of a pile side interface is greatly improved, and the bearing capacity of the pile foundation is greatly improved. After the air bag is recycled, a stiffening core is formed in the center of the stirring body, the strength and rigidity of the pile body are improved, and pile foundation settlement is reduced.
本发明公开了一种囊袋挤压扩体的双层旋喷劲芯复合桩及其施工方法和装置，包括桩管，桩管底部设置若干个喷浆口和侧向搅拌叶片；桩管内侧设置有套管，桩管和套管之间安装有第一注浆件和第二注浆件，第一注浆件和第二注浆件与喷浆口连通；第一注浆件和第二注浆件与桩管固定连接，与套管旋转连接；套管内侧沿周向安装有排水板，排水板内侧安装有气囊。本发明沿桩体全长布置气囊，这样可以根据桩基承载力设计要求，结合本发明施工方法，对第二搅拌体的全长进行挤压扩体，从而增大桩体直径并大幅提高桩侧界面摩阻力，由此大幅提升桩基承载力。气囊回收后，在搅拌体中心施工形成劲芯，增大了桩体的强度和刚度，进而减小桩基沉降。
Double-layer jet grouting stiffening core composite pile of bag extrusion expansion body and construction method and device of double-layer jet grouting stiffening core composite pile
囊袋挤压扩体的双层旋喷劲芯复合桩及其施工方法和装置
ZHU SHIMIN (author) / ZHANG ZHUANGWEI (author) / CHEN CHANGFU (author) / TANG RENHUA (author) / WANG MINGBIN (author)
2024-11-22
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Drainage stiffening core composite pile based on geopolymer grouting and construction method thereof
| European Patent Office | 2021
Foundation grouting stiffening pile and construction method thereof
| European Patent Office | 2021
Fabricated stiffening core composite pile forming machine
| European Patent Office | 2024
| European Patent Office | 2023
Double-pipeline drill bit for cast-in-place stiffening core composite pile
| European Patent Office | 2015