In the yangbei construction project of CCCC Tianjin Waterway Bureau in Yibin, Sichuan, the PVC subgrade surcharge pressure test water bag launched by Wuhan suanda company has been widely used. In the middle of the project, Wuhan suanda company made a professional scale water bag according to the local soil structure and water direction through field investigation and investigation, which was perfectly tested in the middle of the subgrade surcharge pressure test.

Wuhan suanda completed the water bag preloading and unloading of the soft subgrade. The monitoring data of soft foundation settlement of the construction section shows that the settlement of the first water bag preloading section is less than 5mm for two consecutive months, which meets the design unloading standard (the preloading period is 3 months).

In Yibin, Sichuan Province, Yang Bei of CCCC Tianjin Waterway Bureau is required to carry out the construction. The tonnage is high, the water level is required to be 2.8 meters high, the water source is far away, and there is no personnel to cooperate. After day and night struggle, three spans have been completed. Because it is located at an altitude of more than 90 meters above the river, if traditional concrete blocks or sandbags are used for pressure test, the loading capacity of single pier is 4000 tons, which is time-consuming and laborious, and the safety risk is large; After many discussions with Wuhan suanda company, the company finally adopted the externally reinforced sealed water bag produced by the company as the loading body. For this reason, the company invested more than 1.6 million yuan to add 85 new water bags at one time. During the construction process, the 90 meter high water delivery head and the cumbersome cycle cross balance loading were overcome. It took only 3 days to fully load. During the loading process of more than 60 days, the company experienced the cold winter high-altitude freezing weather without leakage; The loading site is clean and tidy, which saves 80% of the time compared with the traditional sandbags and saves a lot of costs for the project department.

Wuhan suanda's pressure test water bag leasing is a butler service, providing customers with free technical consultation, scheme production and on-site construction guidance. Our main customers include China Railway Construction Group, China Hydropower Group, China Communications Group, Zhonggong group, CSCEC and other large-scale construction enterprises at the provincial and municipal levels. Our business scope has covered most parts of the country. So far, pressure tests have been carried out in Wuhan Guangzhou, Beijing Wuhan, Beijing Shanghai, Shanghai Kunming, Guiyang Guangzhou and other railway lines, and in Wuhan, Huanggang, Jiujiang, Maanshan, taohuagu and other Yangtze and Yellow River bridges, Pressure test and load balancing were carried out at the construction sites of large-scale special bridges such as the South-to-North Water Transfer Project, Langqi bridge, chishi bridge, the third Yuanshui bridge, yingwuzhou bridge, the third Hanjiang Bridge in Xiangfan, and the Songhua River Bridge in Jilin. Pressure test and testing were carried out on more than 80 expressways, more than 120 municipal roads and bridge construction sites. All construction projects have been praised by customers.