The Yongjing No. 2 Bid Project of Gansu Road & Bridge is located in a flood-season-affected area. To complete key nodes before the arrival of floods, the project department carried out scientific overall planning and advance planning, formulated special construction plans, and gave priority to rushing the construction of pier columns and bent caps in the river-crossing sections.

　　Through wall-chart operations and reverse scheduling, progress targets were broken down to each day, and timely dynamic corrections were made to ensure that schedule nodes remained controllable. In terms of resource assurance, investment in personnel and equipment was continuously increased, process connections were optimized, grouped mechanical operations and unified dispatch by dedicated personnel were implemented, and the construction pace was fully accelerated. Pier column construction strictly followed standardization requirements, actively promoted the "four new technologies," and applied steel bar positioning fixtures, retractable circular pier column insulation devices, and automatic spray curing equipment, thereby consolidating the quality foundation in terms of technology and equipment. At the same time, key links such as steel bar installation, formwork reinforcement, and protective layer thickness were strictly controlled, steadily improving the construction qualification rate. At the same time, 24-hour duty shifts were strictly implemented, coordination with meteorological departments was strengthened, and early warning information was obtained in a timely manner. A water level monitoring system was deployed upstream of the river channel, and an early warning loudspeaker system and emergency escape platforms were set up in key areas, forming a full-chain defense line of "monitoring-early warning-response-escape." Flood control emergency drills were organized regularly to enhance all personnel's ability to avoid danger and save themselves.

　　Up to now, the project has completed a total of 124 bridge pile foundations, 48 pier columns, 25 ground tie beams, 4 middle tie beams, and 7 bent caps (including 3 prestressed bent caps). Under refined management, all processes are advancing steadily and orderly. At present, the river-crossing areas of the two major bridges have fully formed a situation of vigorous and rapid construction, and the construction of bridge substructures is proceeding at multiple points and being comprehensively accelerated.

　　Next, the Yongjing No. 2 Bid Project Department will continue to adhere to refined management and technological empowerment, firmly grasp every process, consolidate job responsibilities, and have all personnel seize the momentum to ensure that before the arrival of the flood season in mid-June, the construction task of all bridge substructures in the river channel is completed with guaranteed quality and quantity.

Source: Daily Gansu Net