Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-toughness functionally graded material slide-resistant pile and construction method
The invention discloses a high-toughness functionally graded material slide-resistant pile. The high-toughness functionally graded material slide-resistant pile comprises a PVA-ECC material protection layer, tensile area small-particle-size coarse aggregate concrete and a compression area large-particle-size coarse aggregate concrete layer. The PVA-ECC material protection layer, the tensile area small-particle-size coarse aggregate concrete layer and the compression area large-particle-size coarse aggregate concrete layer are sequentially arranged from inside to outside in the landslide thrust direction, and different subareas are poured at the same time. Functional division is carried out according to different stress characteristics of the section of the slide-resistant pile, different material designs are carried out according to a gradient structure, and the prepared functionally graded material slide-resistant pile has high toughness, better deformation ductility and bending and shearing bearing capacity. Steel strands and the small-particle-size coarse aggregate concrete in the tension area can keep deformation coordination, meanwhile, the PVA-ECC protection layer with excellent ductile deformation is arranged on the portion bearing the landslide thrust, cracking damage is reduced, and the toughness and the bending resistance of the whole pile body are improved.
本发明公开了一种高韧性功能梯度材料抗滑桩，该抗滑桩包括：PVA‑ECC材料保护层、受拉区小粒径粗骨料混凝土、受压区大粒径粗骨料混凝土层；其中PVA‑ECC材料保护层、受拉区小粒径粗骨料混凝土层、受压区大粒径粗骨料混凝土层沿滑坡推力方向由内向外依次设置且上述不同分区同时进行浇筑。本发明根据抗滑桩截面不同受力特性进行功能分区，按照梯度结构进行不同的材料设计，本发明制备的功能梯度材料抗滑桩具有高韧性、更优的变形延性、以及抗弯与抗剪承载力。由于受拉区的钢绞线和小粒径粗骨料混凝土能够保持变形协调，同时承受滑坡推力部位设置有优异延性变形的PVA‑ECC保护层，减少开裂破坏，提升了整个桩体的韧性和抗弯能力。
High-toughness functionally graded material slide-resistant pile and construction method
The invention discloses a high-toughness functionally graded material slide-resistant pile. The high-toughness functionally graded material slide-resistant pile comprises a PVA-ECC material protection layer, tensile area small-particle-size coarse aggregate concrete and a compression area large-particle-size coarse aggregate concrete layer. The PVA-ECC material protection layer, the tensile area small-particle-size coarse aggregate concrete layer and the compression area large-particle-size coarse aggregate concrete layer are sequentially arranged from inside to outside in the landslide thrust direction, and different subareas are poured at the same time. Functional division is carried out according to different stress characteristics of the section of the slide-resistant pile, different material designs are carried out according to a gradient structure, and the prepared functionally graded material slide-resistant pile has high toughness, better deformation ductility and bending and shearing bearing capacity. Steel strands and the small-particle-size coarse aggregate concrete in the tension area can keep deformation coordination, meanwhile, the PVA-ECC protection layer with excellent ductile deformation is arranged on the portion bearing the landslide thrust, cracking damage is reduced, and the toughness and the bending resistance of the whole pile body are improved.
本发明公开了一种高韧性功能梯度材料抗滑桩，该抗滑桩包括：PVA‑ECC材料保护层、受拉区小粒径粗骨料混凝土、受压区大粒径粗骨料混凝土层；其中PVA‑ECC材料保护层、受拉区小粒径粗骨料混凝土层、受压区大粒径粗骨料混凝土层沿滑坡推力方向由内向外依次设置且上述不同分区同时进行浇筑。本发明根据抗滑桩截面不同受力特性进行功能分区，按照梯度结构进行不同的材料设计，本发明制备的功能梯度材料抗滑桩具有高韧性、更优的变形延性、以及抗弯与抗剪承载力。由于受拉区的钢绞线和小粒径粗骨料混凝土能够保持变形协调，同时承受滑坡推力部位设置有优异延性变形的PVA‑ECC保护层，减少开裂破坏，提升了整个桩体的韧性和抗弯能力。
High-toughness functionally graded material slide-resistant pile and construction method
一种高韧性功能梯度材料抗滑桩及施工方法
23.11.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Retractable slide-resistant pile and construction method thereof
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2021
Slide-resistant pile steel structure for railway construction
| Europäisches Patentamt | 2024