A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Underground excavation large-span station reserved tunnel underpass structure and construction method thereof
The invention discloses an underground excavation large-span station reserved tunnel underpass structure and a construction method thereof.The underground excavation large-span station reserved tunnel underpass structure comprises a pre-construction area and a post-construction area which are arranged up and down, bench beams and strip-shaped foundations are arranged at the bottom of the pre-construction area, the strip-shaped foundations are located at the two ends of the bench beams, and side columns are arranged on the strip-shaped foundations; composite anchor rod piles are fixedly connected to the bottoms of the bench beams, the free ends of the composite anchor rod piles penetrate through the two sides of the rear construction area, bottom longitudinal beams are arranged above the bench beams, middle columns are arranged on the bottom longitudinal beams, arch parts are fixedly arranged on the tops of the middle columns and the tops of the side columns, a reinforced foundation is arranged in the rear construction area, and a lower penetrating structure is arranged on the reinforced foundation. The underground excavation construction method is adopted, so that the requirement for an earth surface construction site is reduced, the influence on an earth surface traffic form and daily life of residents is reduced, the tunneling pressure of a post-built shield tunnel and the influence on a subway station structure are reduced, the construction difficulty of the post-built tunnel is further reduced, and the construction efficiency is improved. And the deformation of the post-built underpass tunnel and the existing subway station is effectively controlled.
本发明公开了地下暗挖大跨度车站预留隧道下穿结构及其施工方法，包括上下设置的先建设区和后建设区，在先建设区的底部设置有板凳梁和条形基础，条形基础位于板凳梁的两端，在条形基础上设置有边柱，在板凳梁的底部固定连接有复合锚杆桩，复合锚杆桩的自由端从后建设区两侧穿过，板凳梁的上方设置有底纵梁，底纵梁上设置中柱，在中柱和边柱的顶部固定设置有拱部，在后建设区内设置有加固地基，在加固地基设置下穿结构。采取暗挖工法降低了对于地表施工场地的需求，降低了对地表交通形式及居民日常生活的影响，并且降低了后建盾构隧道的掘进压力和对地铁站结构的影响，还降低了后建隧道的施工难度，有效的控制了后建下穿隧道和既有地铁站的变形。
Underground excavation large-span station reserved tunnel underpass structure and construction method thereof
The invention discloses an underground excavation large-span station reserved tunnel underpass structure and a construction method thereof.The underground excavation large-span station reserved tunnel underpass structure comprises a pre-construction area and a post-construction area which are arranged up and down, bench beams and strip-shaped foundations are arranged at the bottom of the pre-construction area, the strip-shaped foundations are located at the two ends of the bench beams, and side columns are arranged on the strip-shaped foundations; composite anchor rod piles are fixedly connected to the bottoms of the bench beams, the free ends of the composite anchor rod piles penetrate through the two sides of the rear construction area, bottom longitudinal beams are arranged above the bench beams, middle columns are arranged on the bottom longitudinal beams, arch parts are fixedly arranged on the tops of the middle columns and the tops of the side columns, a reinforced foundation is arranged in the rear construction area, and a lower penetrating structure is arranged on the reinforced foundation. The underground excavation construction method is adopted, so that the requirement for an earth surface construction site is reduced, the influence on an earth surface traffic form and daily life of residents is reduced, the tunneling pressure of a post-built shield tunnel and the influence on a subway station structure are reduced, the construction difficulty of the post-built tunnel is further reduced, and the construction efficiency is improved. And the deformation of the post-built underpass tunnel and the existing subway station is effectively controlled.
本发明公开了地下暗挖大跨度车站预留隧道下穿结构及其施工方法，包括上下设置的先建设区和后建设区，在先建设区的底部设置有板凳梁和条形基础，条形基础位于板凳梁的两端，在条形基础上设置有边柱，在板凳梁的底部固定连接有复合锚杆桩，复合锚杆桩的自由端从后建设区两侧穿过，板凳梁的上方设置有底纵梁，底纵梁上设置中柱，在中柱和边柱的顶部固定设置有拱部，在后建设区内设置有加固地基，在加固地基设置下穿结构。采取暗挖工法降低了对于地表施工场地的需求，降低了对地表交通形式及居民日常生活的影响，并且降低了后建盾构隧道的掘进压力和对地铁站结构的影响，还降低了后建隧道的施工难度，有效的控制了后建下穿隧道和既有地铁站的变形。
Underground excavation large-span station reserved tunnel underpass structure and construction method thereof
地下暗挖大跨度车站预留隧道下穿结构及其施工方法
ZHANG PENG (author) / MENG JIAO (author) / ZHANG JIQING (author) / ZHANG CHUNLEI (author) / YANG GUISHENG (author) / JIANG WEIDAN (author) / YANG FUXIANG (author) / XU CHENG (author) / LIU QIANG (author) / JIN RUIJIE (author)
2022-04-12
Patent
Electronic Resource
Chinese
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