Better integrity of one-time continuous pouring

Recently, with the completion of the last truck of concrete pumping, the main pier of Taoer River Bridge, the control project of Binzhou Section of National Highway 228 in Shandong Province, has been completed. The bridge is close to the Bohai Sea, where the salinity and alkalinity of groundwater are high, and the concentration of chloride and sulfate ions is 8 to 10 times that of seawater, which restricts the progress of construction. Liu Wei, a bridge expert of the Eighth Bureau of China Construction, introduced that the project adopted comprehensive measures such as brine slurry making and underground multi-level circulation system to overcome the construction problems. The project of Binzhou Section of National Highway

228 in Shandong Province, with a total investment of nearly 3 billion yuan, is a major livelihood project in northern Shandong. After the completion of the Taoer River Bridge, the two sides will be effectively connected, and the original one and a half hour journey across the river will be shortened to five minutes to facilitate the production of enterprises and the travel of residents along the line.

Grasp the golden construction period and speed up major transportation projects in Shandong. Recently, after 48 hours, the first main pier cap of Jiyang Yellow River Rail-cum-Road Bridge, a control project of Jibin high-speed rail, was successfully poured. The bearing platform is 5 meters high and requires more than 5500 cubic meters of concrete earthwork. Traditional construction is mostly sectional pouring, in order to ensure the integrity of the project, the construction party explores one-time continuous pouring. "We use two mixing stations, one with 10 tankers, and the hourly supply capacity can reach 150 cubic meters. One-time continuous pouring has better integrity and saves about 10 days of construction period than sectional pouring," said Chen Hongxu, director of the second bid project of Jibin high-speed rail of China Railway Bridge Bureau. Since

this year, Shandong has strengthened the guarantee of factors, and a number of major transportation infrastructure projects have made rapid progress. In the first two months, the province invested 34.6 billion yuan in transportation infrastructure construction, higher than same period last year. Recently, 119 tasks in the field of highway, railway, port and shipping in Shandong Province were selected as the first batch of pilot projects to speed up the construction of Shandong Demonstration Zone, a transportation power. Transportation departments have accelerated the progress of projects in terms of policy incentives and factor services to help achieve a good start in the first quarter.