Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for excavating mucky soil body area foundation provided with PHC pipe pile
The invention discloses a construction method for excavating a mucky soil body area foundation provided with a PHC pipe pile. The construction method comprises the following steps that geological condition supplementary survey is carried out on a deep foundation pit foundation in a design drawing and a foundation with a shallow distribution sludge layer in a geological survey report or a foundation of a geological abnormal area in pile foundation construction, and the like, the condition of the sludge layer below is found out, a single-shaft jet grouting drilling machine is adopted for performing jet grouting on a mud layer on a foundation meeting the mud layer in the foundation excavation process to perform mud layer consolidation, after consolidation strength is achieved, layered excavation of foundation earthwork is carried out, and by means of the technology, when the foundation is excavated, the construction problem that the pile body of the PHC pipe pile is inclined or the joint welding seam between the PHC pipe piles is cracked due to the fact that the bond stress of the pile top of the PHC pipe pile is not enough is solved, the engineering construction period is ensured, and the situation that the engineering cost is increased due to the quality problem of the PHC pipe pile is avoided.
本发明公开了一种设有PHC管桩的淤泥质土体区域基础开挖的施工方法，是对设计图纸中的深基坑基础和地勘报告中存有浅层分布淤泥层的基础或桩基施工中地质异常区域的基础等，进行地质情况补勘，查明其下方淤泥层情况，对基础开挖过程中遇到淤泥层的基础，采取单轴旋喷钻机实施旋喷水泥浆的方法进行淤泥层固结，待其达到固结强度后，再进行基础土方的分层开挖，采用此技术避免了基础开挖时，PHC管桩的桩顶因其包裹的地质材料握裹力不够，而发生PHC管桩桩身倾斜或PHC管桩桩间接头焊缝裂开的施工难题，确保了工程施工工期，避免了PHC管桩出现质量问题而产生的工程费用增加。
Construction method for excavating mucky soil body area foundation provided with PHC pipe pile
The invention discloses a construction method for excavating a mucky soil body area foundation provided with a PHC pipe pile. The construction method comprises the following steps that geological condition supplementary survey is carried out on a deep foundation pit foundation in a design drawing and a foundation with a shallow distribution sludge layer in a geological survey report or a foundation of a geological abnormal area in pile foundation construction, and the like, the condition of the sludge layer below is found out, a single-shaft jet grouting drilling machine is adopted for performing jet grouting on a mud layer on a foundation meeting the mud layer in the foundation excavation process to perform mud layer consolidation, after consolidation strength is achieved, layered excavation of foundation earthwork is carried out, and by means of the technology, when the foundation is excavated, the construction problem that the pile body of the PHC pipe pile is inclined or the joint welding seam between the PHC pipe piles is cracked due to the fact that the bond stress of the pile top of the PHC pipe pile is not enough is solved, the engineering construction period is ensured, and the situation that the engineering cost is increased due to the quality problem of the PHC pipe pile is avoided.
本发明公开了一种设有PHC管桩的淤泥质土体区域基础开挖的施工方法，是对设计图纸中的深基坑基础和地勘报告中存有浅层分布淤泥层的基础或桩基施工中地质异常区域的基础等，进行地质情况补勘，查明其下方淤泥层情况，对基础开挖过程中遇到淤泥层的基础，采取单轴旋喷钻机实施旋喷水泥浆的方法进行淤泥层固结，待其达到固结强度后，再进行基础土方的分层开挖，采用此技术避免了基础开挖时，PHC管桩的桩顶因其包裹的地质材料握裹力不够，而发生PHC管桩桩身倾斜或PHC管桩桩间接头焊缝裂开的施工难题，确保了工程施工工期，避免了PHC管桩出现质量问题而产生的工程费用增加。
Construction method for excavating mucky soil body area foundation provided with PHC pipe pile
一种设有PHC管桩的淤泥质土体区域基础开挖的施工方法
ZHU DAOFU (Autor:in) / ZHANG HONGYU (Autor:in) / CUI SHIJIE (Autor:in) / ZHENG ZHIFEI (Autor:in) / ZHANG JUN (Autor:in) / TUO BUSHENG (Autor:in)
01.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
| Europäisches Patentamt | 2021
Construction method for reinforcing PHC pipe pile core in mucky soil layer area
| Europäisches Patentamt | 2021
Construction method for mucky soft soil roadbase tubular pile
| Europäisches Patentamt | 2015
| Europäisches Patentamt | 2023
Foundation pit reinforcement construction method for mucky soil layer
| Europäisches Patentamt | 2022