A Construction Method for Covering and Excavating the Half-width Structure Roof of Subway Stations in Central Urban Areas
A technology for subway stations and construction methods, applied in infrastructure engineering, excavation, underwater structures, etc., can solve problems such as long construction period, large social impact, and high cost
Active Publication Date: 2020-10-16
CHINA RAILWAY ERJU 1ST ENG CO
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[0003] Take the Huansha Road Station of Guiyang City Rail Transit Line 2 Phase 1 civil engineering bid 12 as an example. This road section is located at the intersection of Yan'an West Road, Zaoshan Road and Huansha Road in Guiyang City. The station is arranged along the east-west direction of Yan'an West Road. Located in the center of Yan'an West Road, Yan'an West Road is about 40m wide and has 8 lanes in both directions. It is the main road in the downtown area of Guiyang. Cover-and-excavation construction has a long construction period and high cost, and the traffic needs to be diverted multiple times during the roof construction period, which has a great social impact; if the half-width cover-excavation temporary road slab is used for construction, the traffic will be toppled many times during the construction of the roof. The social impact is relatively large, so the construction of the subway station in the city center needs to prevent the urban traffic congestion caused by the construction of the subway station, which is a major technical and construction organization problem.
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[0031] Refer to attached Figures 1 to 4 , the present embodiment provides a construction method for covering and excavating a half-width structure roof of a subway station in a central urban area, and the specific method is as follows:
[0032] 1. Traffic relief. According to the traffic relief plan, the corresponding sidewalk at the intersection where the station is located will be changed into a carriageway, and the width of the carriageway will be increased to alleviate the impact of road occupation construction on traffic flow. Combined with traffic evacuation and construction organization arrangements, the half roof area on the north side of the station will be fenced off, and will be continuously optimized according to the on-site construction organization. The half area of the lane above the station is taken as the half roof construction area 1 (the half area mentioned here is not necessarily 50% of the width of the lane, but refers to a general range of 30%-70% of t...
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The invention provides a construction method for roof cover excavation of a semi-range structure of a subway station in a central urban area and belongs to the field of urban rail transit construction. The construction method comprises the following steps of traffic relief, construction of occlusal piles and shaped steel column piles, crown beam construction, semi-range roof construction, resumingof the road surface and guide and change of the traffic, construction of the occlusal piles on the other side, construction of the occlusal piles along the side wall on the other side of a station planning area in the other half area, pile top crown beam construction, then main foundation pit extraction and construction of a main structure. By the adoption of the method, the influence of shaft excavation on surrounding residents, shops and unit environment is effectively restrained, and the construction safety and the construction period are ensured.
Description
technical field [0001] The invention relates to a half-width structure roof cover excavation construction method, which belongs to the field of urban rail transit construction. Background technique [0002] In the construction of urban subways, the lines are mainly laid under the existing roads, especially in the downtown areas with heavy traffic, where the underground pipelines are intricate and the high-rise buildings on both sides of the roads are dense. Therefore, the construction of the subway station in the city center must not only ensure the safety of the construction of the project itself, but also properly solve the impact of the subway occupation construction on urban traffic. [0003] Take the Huansha Road Station of Guiyang City Rail Transit Line 2 Phase 1 civil engineering bid 12 as an example. This road section is located at the intersection of Yan'an West Road, Zaoshan Road and Huansha Road in Guiyang City. The station is arranged along the east-west directio...
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IPC IPC(8): E02D29/045E02D17/04E02D19/10E02D31/02E02D5/22E02D5/28
CPCE02D5/22E02D5/28E02D17/04E02D19/10E02D29/045E02D31/025
Inventor 苏杰瞿国丽李启亮卢思维马宏川孔德华赵翔宇石正濡吴川疆李柯柯
Owner CHINA RAILWAY ERJU 1ST ENG CO