Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cavity grouting construction method for final joint foundation of immersed tube
The invention discloses an immersed tube final joint foundation cavity grouting construction method, and relates to the technical field of underwater immersed tube foundation cavity grouting construction. And a construction method of gravel backfilling and grouting is adopted. In order to meet the requirements for the bearing capacity and the anti-seismic property of the pipe section foundation, gravel is laid in a construction channel at the bottom of the final joint section, the reserved clear height is not smaller than 800 mm, and underwater grouting is conducted on a grouting pipe after reservation. According to the construction method, gravel foundation backfilling is carried out after pushing of a final joint jacking section is completed, cavity grouting construction is carried out on a backfilling foundation after construction of a jacking section post-cast strip is completed, the process links of pipeline pre-burying, preliminary locking and backfilling of pipe section gravel, underwater grouting and the like are carried out, the construction technology is complex, the underwater construction safety influence factors are many, and the quality control difficulty is large. In the grouting process, comprehensive evaluation is conducted according to the overall grout returning condition of the base, the construction quality safety is guaranteed, and the related performance requirements of the design settlement amount, compactness, strength and the like are met. And the purposes of coordinating the differential settlement of the structure base and regulating and controlling the settlement deformation are also achieved.
一种沉管最终接头基础空腔注浆施工方法，涉及海下沉管基础空腔注浆施工技术领域。采用碎石回填并注浆的施工方法。为满足管段基础承载力与抗震性能要求，最终接头节段底部施工通道内铺设碎石预留净高不小于800mm、预留后注浆管进行水下注浆。碎石基础回填在最终接头顶进节段顶推完成后进行，待顶进节后浇带施工完成后对回填基础进行空腔注浆施工，经历了管道预埋、管段碎石初步锁定回填、水下注浆等工序环节，施工工艺复杂，水下施工安全影响因素多，质量控制难度大。在注浆过程中根据基底整体反浆情况进行综合评价，保证了施工质量安全，满足设计沉降量、密实度、强度等相关性能要求。也起到了协调结构基底差异沉降、调控沉降变形的目的。
Cavity grouting construction method for final joint foundation of immersed tube
The invention discloses an immersed tube final joint foundation cavity grouting construction method, and relates to the technical field of underwater immersed tube foundation cavity grouting construction. And a construction method of gravel backfilling and grouting is adopted. In order to meet the requirements for the bearing capacity and the anti-seismic property of the pipe section foundation, gravel is laid in a construction channel at the bottom of the final joint section, the reserved clear height is not smaller than 800 mm, and underwater grouting is conducted on a grouting pipe after reservation. According to the construction method, gravel foundation backfilling is carried out after pushing of a final joint jacking section is completed, cavity grouting construction is carried out on a backfilling foundation after construction of a jacking section post-cast strip is completed, the process links of pipeline pre-burying, preliminary locking and backfilling of pipe section gravel, underwater grouting and the like are carried out, the construction technology is complex, the underwater construction safety influence factors are many, and the quality control difficulty is large. In the grouting process, comprehensive evaluation is conducted according to the overall grout returning condition of the base, the construction quality safety is guaranteed, and the related performance requirements of the design settlement amount, compactness, strength and the like are met. And the purposes of coordinating the differential settlement of the structure base and regulating and controlling the settlement deformation are also achieved.
一种沉管最终接头基础空腔注浆施工方法，涉及海下沉管基础空腔注浆施工技术领域。采用碎石回填并注浆的施工方法。为满足管段基础承载力与抗震性能要求，最终接头节段底部施工通道内铺设碎石预留净高不小于800mm、预留后注浆管进行水下注浆。碎石基础回填在最终接头顶进节段顶推完成后进行，待顶进节后浇带施工完成后对回填基础进行空腔注浆施工，经历了管道预埋、管段碎石初步锁定回填、水下注浆等工序环节，施工工艺复杂，水下施工安全影响因素多，质量控制难度大。在注浆过程中根据基底整体反浆情况进行综合评价，保证了施工质量安全，满足设计沉降量、密实度、强度等相关性能要求。也起到了协调结构基底差异沉降、调控沉降变形的目的。
Cavity grouting construction method for final joint foundation of immersed tube
一种沉管最终接头基础空腔注浆施工方法
LIU FUXIN (Autor:in) / ZHANG CHAO (Autor:in) / JIANG HAIBO (Autor:in) / LIU MING (Autor:in) / WEI WENYANG (Autor:in) / AN QINGZHE (Autor:in) / DONG TIANJIE (Autor:in) / YU HONGFENG (Autor:in)
08.11.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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