The first precast box girder of Nan Heng expressway project was successfully poured.
As there are many kinds of karst, bedding, dangerous rock and rockfall in the area where the tunnel is located, the construction technology is strict, difficult and high risk.
In order to avoid honeycomb, pitted surface, water marks and even concrete faults, the project department adopts the principle of “first base plate, then web, and finally top plate, pouring from one end to three-quarters, and then from the other end to three-quarters” to ensure the quality and quantity of precast box girder construction.
On October 29, after nearly three and a half hours of continuous construction, the first precast box girder of Nan Heng expressway project was successfully poured, marking the official opening of the bridge superstructure construction of the project.
2 tunnel of Lot 3 of Chongping railway entered the tunnel smoothly, marking that Nadou tunnel entered the substantive construction stage.
It is 29.35m long, 2.4m wide and 1.72m high.
Under the attack of a series of “combined punches”, the project department has gradually completed the processes of pipeline soft foundation treatment, pipeline construction, pavement leveling and compaction, and successfully realized the handover.
Planning: trade union of the fifth company editor: Wen Baijie & Peng Wenjin organizer: trade union of China Railway Shanghai Bureau..
In order to ensure the smooth pouring of the first beam, the project department strictly implements the leadership shift system, strictly controls the mix proportion of raw materials, and monitors all processes in the pouring process in real time.
Recently, good news came from all fronts of the five companies, which added new impetus to fully complete the annual objectives and tasks and ensure the good start of the 14th five year plan.
Natuo 2 tunnel is a single tunnel double track tunnel with a total length of 1441.559m, a design speed of 250km per hour and a maximum buried depth of about 148m.
On October 25, the 350m vehicular road foundation in the west section of the planned first road of the bid IV Project of Guangzhou Qingsheng hub was completed as scheduled, and the drainage pipe network was also completed simultaneously and passed the acceptance at one time.
In order to ensure the timely supply of pipeline components, the project department shall communicate with the prefabricated component factory in advance and send special personnel to the site to master the prefabrication progress.
Therefore, according to the principle of “adjusting measures to local conditions and comprehensive treatment”, the project department carries out comprehensive advanced geological prediction, monitoring and measurement, and takes pre reinforcement measures for the shallow buried section of the tunnel top during the construction to ensure the safety and quality control during the construction process.
The fourth quarter of the showdown Since the launch of the group company’s “decisive battle for the fourth quarter, decisive battle for the goal” labor competition, the fifth company of China Railway Shanghai Bureau has deeply implemented the requirements of labor competition activities, set goals, promoted “war” with “competition”, fully mobilized the enthusiasm, initiative and creativity of employees, firmly grasped the golden season of construction and production in the fourth quarter, and comprehensively set off an upsurge of tackling key problems in production and operation, Make every effort to sprint for the annual goal and task.
It is a key project in the bid section.
On October 25, the exit of Nadou No.
The first beam successfully poured this time is a 3-3# precast box girder on the right span of S512 bridge.
Since receiving the pipeline construction node document issued by the joint venture project management department of Qingsheng hub block on August 16 this year, the project department has attached great importance to it, continuously optimized the construction scheme, increased the investment of machinery, equipment and personnel, and continued to set off a big upsurge.
