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A platform for research: civil engineering, architecture and urbanism
Bead-like karst cave pile foundation structure and construction method thereof
The invention discloses a string-bead-shaped karst cave pile foundation structure and a construction method thereof, belongs to the technical field of karst cave treatment, and solves the problem that a string-bead-shaped karst cave is difficult to treat. The pile casing comprises an inner pile casing assembly and an outer pile casing assembly, the outer pile casing assembly is formed by sequentially connecting a plurality of outer pile casing units, and the diameters of the outer pile casing units are sequentially reduced from top to bottom; the inner pile casing assembly is arranged in the outer pile casing assembly in a sleeved mode, and grouting is conducted in the inner pile casing assembly to form a pile foundation. The method comprises the steps that the outer pile casing assembly is constructed; constructing an inner pile casing assembly; sand and gravels are backfilled to the bottom in the inner pile casing assembly, concrete is poured to the upper portion, and a pile foundation is formed; and the bottom of the area between the inner pile casing assembly and the outer pile casing assembly is backfilled with sand and gravels, and concrete is poured on the upper portion to form a reinforcing pile. The pile foundation construction safety and the pile foundation construction quality can be effectively improved, the grouting amount is reduced, the hole forming quality is improved, the construction cost is saved, and the construction problems that hole collapse, slurry leakage and the like are likely to happen during pile foundation construction in the karst area are solved.
本发明公开了一种串珠状溶洞桩基础结构及其施工方法，属于溶洞处理技术领域，解决了串珠状溶洞难以处理的问题。本发明包括内护筒组件和外护筒组件，外护筒组件由多个外护筒单元依次连接组成，外护筒单元的直径由上至下依次减小；内护筒组件套设在外护筒组件内部，内护筒组件内灌浆形成桩基础。本发明方法：施工外护筒组件；施工内护筒组件；向内护筒组件内底部回填砂和碎石，上部灌注混凝土，形成桩基础；向内护筒组件和外护筒组件之间区域底部回填砂和碎石，上部灌注混凝土，形成加固桩。本发明能够有效提高桩基施工的安全性和提升桩基施工质量，减少灌浆量，提高成孔质量，节省施工成本，解决了岩溶地区桩基础施工易发生塌孔、漏浆等施工难题。
Bead-like karst cave pile foundation structure and construction method thereof
The invention discloses a string-bead-shaped karst cave pile foundation structure and a construction method thereof, belongs to the technical field of karst cave treatment, and solves the problem that a string-bead-shaped karst cave is difficult to treat. The pile casing comprises an inner pile casing assembly and an outer pile casing assembly, the outer pile casing assembly is formed by sequentially connecting a plurality of outer pile casing units, and the diameters of the outer pile casing units are sequentially reduced from top to bottom; the inner pile casing assembly is arranged in the outer pile casing assembly in a sleeved mode, and grouting is conducted in the inner pile casing assembly to form a pile foundation. The method comprises the steps that the outer pile casing assembly is constructed; constructing an inner pile casing assembly; sand and gravels are backfilled to the bottom in the inner pile casing assembly, concrete is poured to the upper portion, and a pile foundation is formed; and the bottom of the area between the inner pile casing assembly and the outer pile casing assembly is backfilled with sand and gravels, and concrete is poured on the upper portion to form a reinforcing pile. The pile foundation construction safety and the pile foundation construction quality can be effectively improved, the grouting amount is reduced, the hole forming quality is improved, the construction cost is saved, and the construction problems that hole collapse, slurry leakage and the like are likely to happen during pile foundation construction in the karst area are solved.
本发明公开了一种串珠状溶洞桩基础结构及其施工方法，属于溶洞处理技术领域，解决了串珠状溶洞难以处理的问题。本发明包括内护筒组件和外护筒组件，外护筒组件由多个外护筒单元依次连接组成，外护筒单元的直径由上至下依次减小；内护筒组件套设在外护筒组件内部，内护筒组件内灌浆形成桩基础。本发明方法：施工外护筒组件；施工内护筒组件；向内护筒组件内底部回填砂和碎石，上部灌注混凝土，形成桩基础；向内护筒组件和外护筒组件之间区域底部回填砂和碎石，上部灌注混凝土，形成加固桩。本发明能够有效提高桩基施工的安全性和提升桩基施工质量，减少灌浆量，提高成孔质量，节省施工成本，解决了岩溶地区桩基础施工易发生塌孔、漏浆等施工难题。
Bead-like karst cave pile foundation structure and construction method thereof
一种串珠状溶洞桩基础结构及其施工方法
HEI XIAODAN (author) / ZHANG QINSHENG (author) / SUN HAIFENG (author) / ZHU QUANXIU (author) / DU GANG (author) / HU LONGDE (author) / WANG DUOJUN (author)
2023-12-05
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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