Project To Support The Lebanese National Conservatory Of Music

The project of the Lebanese National Conservatory of Music is subcontracted by Beijing Vibroflotation Engineering Machinery Co., LTD. The proposed site is located near the Mediterranean Sea, with the closest point being only 100 meters away from the sea. About 30% of the area within the proposed site is at the same level as the surrounding roads, which was used for backfill during the construction of adjacent projects. The soil quality is varied and of uneven properties. The groundwater mainly consists of lateral seawater infiltration, precipitation entering the upper part of the site and groundwater from the eastern Lebanon mountain range flowing into the Mediterranean Sea. The groundwater level is directly affected by the Mediterranean Sea water level, ranging from 0.20 to 1.30 meters above sea level. The overall trend of groundwater level is directly affected by the rainy season precipitation and the eastern Mediterranean tidal influence, with a change range of about 1.5 meters.

The foundation soil of the proposed site mainly consists of fill soil layer ①, lower middle to coarse sand layer ②, fine sand layer ③, clayey soil layer ④, fine sand layer ⑤, limestone layer ⑥, etc.

In order to eliminate the liquefaction of the foundation soil and simultaneously enhance the bearing capacity of the foundation soil, the vibro-compaction method is adopted. The engineering properties of the foundation soil in the vertical direction are significantly different, and the groundwater in the site has moderate corrosiveness to concrete structures and weak corrosiveness to the steel reinforcement in reinforced concrete structures. In a dry-wet alternating environment, the steel reinforcement in reinforced concrete structures is highly corrosive. Therefore, the project adopted the combined construction method of vibration pile compaction and long spiral drilling and concrete filling piles.

Due to the epidemic, in order to ensure the normal progress of the project, with the strong support of the company's leadership and the efforts of the business personnel, the project personnel entered the site on October 6, 2020, to prepare for the construction. The project's engineering difficulties were high groundwater levels on the site, which coincided with the Lebanese rainy season, increasing the difficulty of construction. In addition, the serious epidemic situation and unstable situation in Lebanon brought many inconveniences to the construction. Our team overcame these difficulties by making a reasonable deployment of work, and worked closely with local workers in Lebanon to complete the construction task in accordance with the requirements of the owner, winning the owner's high recognition.

At present, the Lebanese National Higher Conservatory of Music project was completed on June 15, 2021. The vibration pile compaction was completed for 42,000 meters, and 26,000 cubic meters of concrete was poured for the long spiral drilling and concrete filling piles.