Accelerating the Greater Bay Area on the “track”, SEMW Machinery’s TRD-70E construction machine showed its strength in construction in North China!

Bay area integration, traffic first, 

Jiaoda Avenue, Jiaozhou SCO Demonstration Zone, Qingdao 

Underground road traffic supporting projects, 

SEMW Machinery TRD-70E construction method machine showed its strength in construction, 

Excellent performance, excellent efficiency and high efficiency creation, 

Build a strong foundation for the benefit of the people’s livelihood, 

Help the Charming Bay Area to build regional accessibility, 

Sustainable high-quality complete three-dimensional transportation system, 

The “Greater Bay Area on track” is speeding up.

A total investment of 5.9 billion yuan will be invested in the underground road traffic supporting project of Jiaotong University Avenue in the Shanghai Cooperation Demonstration Zone. It starts from Minjiang Road in the south and ends at Liaohe Road in the north, with a total length of about 4.7 kilometers. It mainly includes road engineering, tunnel engineering, bridge engineering, rail transit engineering, etc. Simultaneously carry out canalization design for the entrance and exit along the direction of Jiaotong University Avenue.

After the completion of the project, through the construction of underground roads, the transit traffic and regional arrival and departure traffic will be quickly separated, and the traffic carrying capacity of the road network will be improved. Implement rail transit, integrate the construction of rail transit and underground roads, and build it at one time, providing a convenient passage for regional traffic. This not only guarantees the needs of fast and large-capacity transit traffic relief, but also takes into account the development process of the area, promotes closer connection between groups, and thus improves the overall traffic quality of the demonstration area. 

At the current stage of the project, it is planned to excavate the existing Jiaoda Avenue and develop the underground space. The excavation depth is about 10~11m. The lower part is the tunnel project, and the upper part is the road project (including supporting pipelines). The silty soil layer is widely distributed along the road, and it is close to the seaside of Jiaozhou Bay, so the self-stability is poor, and there are great risks in excavation. The enclosure structure of the tunnel project adopts the form of TRD cement mixing wall with concrete support and steel support.”

At the construction site, SEMW Machinery’s TRD-70E construction method machine was used to do multi-section water-stop curtain continuous wall operations to control groundwater before excavating the foundation pit in the early stage. The thickness of the body is 850mm, and the depth of the wall is 17m-26m. At the same time, 1,366 pieces of 700*300mm H-shaped steel, about 6,000 tons, are inserted into the pile positions in the water-stop wall to provide strong support for subsequent construction. The project requires that the verticality of the cement mixing wall of equal thickness is not greater than 1/300, the deviation of the wall position is not greater than 50mm, the deviation of the wall thickness is not greater than 20mm, and the wall depth and wall thickness must not have negative deviations.

According to the geological data around the site, the original landform of the area was coastal shoal, which was reconstructed by artificial backfilling, and the geological conditions were complicated. The TRD-70E construction machine of SEMW Machinery effectively guaranteed the construction progress of the project by virtue of its excellent construction performance and powerful product performance. The equipment is low-failure, stable and accurate, and quickly adapts to the construction environment. During the construction process, different strata can be mixed evenly to form a high-quality wall that is consistent from top to bottom. At the same time, the main working mechanism of the equipment has measurement sensors that can measure the linearity, Verticality is effectively monitored to ensure the quality of the wall. In addition, the on-site high-quality after-sales service guarantee team of SEMW Machinery is on site for 24 hours, providing reasonable suggestions for project construction, providing professional training and on-site disclosure for construction workers, and escorting TRD equipment construction at all times. 

In 2012, SEMW Machinery independently developed the first TRD-60D construction machine with a construction capacity of 61m in China; in 2017, it launched the TRD-60E construction machine with low noise and full electric power that meets urban working conditions; in 2018, it successfully launched the TRD-80EA type The construction method machine created the world’s deepest TRD construction record; in 2019, it launched the TRD-70D/E type to meet the construction of large depth and complex strata, forming three product series of TRD-60/70/80; in 2022, the product series will be further expanded, Launched TRD-C50 construction machine to meet new market demands.

Domestic key projects, supporting professional construction equipment. SEMW Machinery adheres to the concept of “marketization of product development”, focuses on new infrastructure, aims at the general trend of the industry with a keen eye, and develops its research and development strength at the same time, helping more national projects to run “accelerated” with more useful, durable and practical equipment.