Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of ultra-shallow-buried large-span underground excavation subway station
The invention discloses a construction method of an ultra-shallow-buried large-span underground excavation subway station, which comprises the following steps: firstly excavating an open excavation foundation pit to an underground excavation working surface to construct a pipe curtain, then excavating two side pilot tunnels according to design requirements, constructing side piles and a top beam, then excavating two middle pilot tunnels, constructing a secondary lining arch cover, and constructing a secondary lining arch cover; a rock-soil body below the arch cover is excavated in sequence, a concrete support and a steel support are erected to the bottom face of the station tunnel, finally, a cushion layer is poured, a waterproof plate is laid, and a closed main body structure is built back. The construction method effectively solves the influence of pipeline relocation and modification, traffic guide and modification and the like on the road surface, and compared with a traditional side hole method and a PBA construction method, the construction method is simpler and more convenient in construction procedure, simpler in supporting system and smaller in waste project amount, a large-span structure and waterproof quality are easier to guarantee, and the construction cost is reduced. Therefore, the advantages of large construction space, high efficiency, short construction period and small risk are achieved, and compared with a traditional arch cover method, the structure burial depth is shallower, the stability of a structure system is better, and the stratum applicability is wider.
本发明公开了一种超浅埋大跨度暗挖地铁车站的施工方法，其包括先开挖明挖基坑至暗挖工作面施作管幕，然后根据设计要求开挖两个侧导洞并施作边桩及冠梁，之后开挖两个中导洞，施作二衬拱盖，依次开挖拱盖下岩土体及架设砼支撑、钢支撑至车站隧道底面，最后浇筑垫层、敷设防水板并回筑封闭主体结构。该施工方法有效解决了管线迁改、交通导改等对路面产生的影响，与传统的侧洞法和PBA工法相比，施工工序更简便、支护体系更简单、废弃工程量更少，并且大跨度结构及防水质量更容易得到保证，从而实现了施工空间大、效率高、工期短、风险小的优势，与传统的拱盖法相比，结构埋深更浅、结构体系的稳定性更好、地层适用性更广。
Construction method of ultra-shallow-buried large-span underground excavation subway station
The invention discloses a construction method of an ultra-shallow-buried large-span underground excavation subway station, which comprises the following steps: firstly excavating an open excavation foundation pit to an underground excavation working surface to construct a pipe curtain, then excavating two side pilot tunnels according to design requirements, constructing side piles and a top beam, then excavating two middle pilot tunnels, constructing a secondary lining arch cover, and constructing a secondary lining arch cover; a rock-soil body below the arch cover is excavated in sequence, a concrete support and a steel support are erected to the bottom face of the station tunnel, finally, a cushion layer is poured, a waterproof plate is laid, and a closed main body structure is built back. The construction method effectively solves the influence of pipeline relocation and modification, traffic guide and modification and the like on the road surface, and compared with a traditional side hole method and a PBA construction method, the construction method is simpler and more convenient in construction procedure, simpler in supporting system and smaller in waste project amount, a large-span structure and waterproof quality are easier to guarantee, and the construction cost is reduced. Therefore, the advantages of large construction space, high efficiency, short construction period and small risk are achieved, and compared with a traditional arch cover method, the structure burial depth is shallower, the stability of a structure system is better, and the stratum applicability is wider.
本发明公开了一种超浅埋大跨度暗挖地铁车站的施工方法，其包括先开挖明挖基坑至暗挖工作面施作管幕，然后根据设计要求开挖两个侧导洞并施作边桩及冠梁，之后开挖两个中导洞，施作二衬拱盖，依次开挖拱盖下岩土体及架设砼支撑、钢支撑至车站隧道底面，最后浇筑垫层、敷设防水板并回筑封闭主体结构。该施工方法有效解决了管线迁改、交通导改等对路面产生的影响，与传统的侧洞法和PBA工法相比，施工工序更简便、支护体系更简单、废弃工程量更少，并且大跨度结构及防水质量更容易得到保证，从而实现了施工空间大、效率高、工期短、风险小的优势，与传统的拱盖法相比，结构埋深更浅、结构体系的稳定性更好、地层适用性更广。
Construction method of ultra-shallow-buried large-span underground excavation subway station
一种超浅埋大跨度暗挖地铁车站的施工方法
WANG JIAKAI (Autor:in) / DU YIMING (Autor:in) / LIU KUN (Autor:in) / WANG XINGTONG (Autor:in) / SHEN YANFENG (Autor:in) / LIU ZUYUN (Autor:in) / KANG SHUAI (Autor:in) / FAN HUI (Autor:in) / ZHANG HONGYE (Autor:in)
29.09.2023
Patent
Elektronische Ressource
Chinesisch
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