Qingdao Metro Line 9 Phase I Project Civil Construction Section 2 Bid 03 Work Area is undertaken by China Railway 11th Bureau Group, the construction scope includes the Yuxi section of the fourth line of the open cut section, the Tieqishan access section line, Zhengyang East Road Station and Zhengyang East Road Station Xifu Town Station section. The four-line open-cut section of the Yuxi section is the first work area in the 2nd bid section of Line 9 to pass the acceptance of foundation pit excavation conditions. At present, 70% of the enclosure structure construction of the four-line open-cut section of the Yuxi section has been completed, and 55% of the earthwork construction has been completedThe relocation and modification of the pipeline of the Tieqishan entry and exit section has been completedThe construction of the main envelope structure of Zhengyang East Road Station has been completed by 80%, and the construction of the enclosure structure of the attached No. 2 wind pavilion and entrance and exit C has been completed by 10%.
Figure: Aerial photograph of the open-cut section of the fourth line in the Yuxi section before construction).
1. Plan the layout and not be afraid of the obstacles of the project.
As soon as the project entered the site last year, it encountered the problem of requisition and relocation. The project section of the house demolition, greening and pipeline relocation and renovation of the project is large, the construction is extremely complex, the problem of green plant property ownership has become a roadblock at the beginning of the project, and has not been solved for a long time, China Railway 11th Bureau actively mobilized elite soldiers to coordinate the city, district, street, administrative management department and other property rights units, after arduous and meticulous repeated negotiations, negotiations, and finally was successfully solved, clearing the obstacles for the opening of the construction situation.
2. Scientific organization, brainstorming to overcome difficulties.
The construction environment is complex, the geological conditions of the pipeline section are complex and changeable, there are many underground pipelines, it is located in a traffic fortress, and the traffic flow is large, which brings great challenges to the construction of the subway. During the construction process, on the one hand, the project department of the 03 work area of the 2nd bid section of Qingdao Metro Line 9 of China Railway 11th Bureau Group has studied and optimized the construction station with the construction, design, survey and other units, and the reasonable construction plan and technical measures, on the other hand, while ensuring the quality and safety of the project, it has increased the investment in measures and scientific management to minimize the impact on the surrounding environment and residents and ensure the smooth progress of the subway construction.
3. Overall arrangement, precise construction to solve problems.
There are many types of construction methods for pipe sections, covering a variety of construction methods such as underground excavation, open excavation and shield tunneling, and it is the only construction area of Line 9 that contains a hidden excavation section. According to various construction methods, according to the actual situation of the site and the requirements of the construction period, the project department has formulated a feasible construction organization design plan, which can effectively cope with the construction of different environmental conditions.
The project department of Qingdao Metro Line 9 03 of China Railway 11th Bureau Group takes the construction difficulties as the problem-oriented, fully implements the construction concept of Qingdao Metro Group, and finally closely connects with external units under the guidance of the Qingdao Metro Project Headquarters of China Railway Construction, and successfully overcomes the difficulties of the construction environment and construction method, and finally reduces the plant demolition area of about 5,000 square meters, and the greening and relocation of about 230 square meters, which provides conditions for the construction to enter the site, saves investment, ensures smooth traffic diversion during the construction period, and minimizes the impact of station construction on the lives of surrounding residents。
Figure: Aerial photograph of the four-line open-cut section of the Yuxi section).
The construction of Metro Line 9 also marks the improvement of Qingdao's subway network and the steady progress of urban transportation construction, which will bring more convenient travel methods to Qingdao citizens, continuously promote the economic development of Qingdao, and further promote the realization of management goals such as safety, quality, efficiency, green, wisdom and harmony, so as to build a "world-class subway" The top-level planning has laid a good foundation and effectively set up a pulsating "No. 9 stent" for Qingdao's traffic artery. (Photo: Zhang Guiping, Zhang Panpan).
*: China**Net.