According to the requirements of construction drawings, I have been engaged in derusting, straightening, cutting, processing, forming and assembly of various steel skeleton. , and has mastered the specification, shape, size, quantity, spacing, anchorage length, joint position, protective layer thickness and other construction specifications. Through a detailed understanding of the characteristics of steel bar manufacturing and binding technology and the operation methods of technology and tools, we can deeply understand and master the safety technical measures of this type of work, strictly implement safety regulations and implement protective measures to ensure safe production; Reasonable suggestions were put forward many times during the construction, which greatly promoted the efficient operation of production; Actively carry out the demonstration operation of primary and intermediate steel workers, impart skills, improve business and professional knowledge, and help solve technical problems in construction; Be able to report the possible unfavorable factors and potential safety hazards in the construction process to the competent leader in time to ensure that the construction is carried out under the conditions of high quality, high technology, high efficiency, safety and environmental protection; And can actively promote and apply new technologies, new processes, new materials and new equipment in the construction, so as to continuously improve their business capabilities and make greater contributions to the survival and development of enterprises.
Keywords: rebar worker, senior technician
In the construction of steel bar erection, because the erection of outer steel bar is the most important part of the whole gradual transition section, it must have high precision, so I take the erection of outer steel bar as the key point and breakthrough point of construction. Through careful reading of the drawings, we know the shape, size, stress elements and layout of steel bars of the whole gradual transition section, and cancel the scheme of using a large number of anchor rods for erection in the original design. A fast, accurate and reasonable construction scheme of external steel bar erection is determined: firstly, a φ 25 steel bar is fixed in the downstream direction of the gradual change section, and passes through the center of the radial section at the junction of the gradual change section and the upper flat section, and a binding line is tied at the center of the circle, and the outer skin of the external steel bar mesh is measured and marked, and the other end of the binding line is connected to the waist line point on the rock wall, so as to determine the outer skin of the external steel bar mesh erection. Connect this point with a point on the outer steel mesh measured on the concrete surface of the bottom corner of the lock chamber section, draw a straight line, erect the first outer steel mesh along this straight line, then erect the rest outer steel mesh in a similar way, and finally erect the whole steel mesh. This method reduces the construction process, especially the repeated measurement process, ensures the accuracy of steel bar binding position, saves materials, reduces labor intensity and improves labor efficiency. As the saying goes, "Erection is the eye of steel mesh". A good erection means that the binding of steel mesh has been half successful, and accurate erection adds weight to the successful binding of steel bars.
In the steel binding construction, the first important step is to pick and shrink the iron. Because the shape of the transition section determines that the size of any two steel bars is different, there are many shrinkage irons, and the length difference between two adjacent steel bars is very small, only a few centimeters. When the shrinkage iron is hoisted on the platform, I lead other binding personnel to align one end of the shrinkage iron on the platform, and then arrange it according to the length, so that one can be bound from short to long during binding, which greatly reduces the cost. The second important link is the binding of the main reinforcement. At that time, the main reinforcement we used was φ 28, and the binding length was required to be 40d(d is the diameter of reinforcement). Because the gradual transition section is divided into upper and lower parts for construction, in order to facilitate the binding construction of personnel, we know the pile number and elevation of the installation site, and are familiar with the specifications and performance of the steel bars used. Combined with the site situation, I suggest to the technicians that the lap length of 150cm (the designed lap length is 1 12cm) should be reserved when binding the lower steel bars, which is nearly 40 cm more. Finally, the technician accepted my suggestion. After intense and orderly construction, we successfully completed the construction task of erecting and binding steel bars in the gradual transition section one and a half days ahead of schedule, which was well received by the design, supervision and sub-bureau.
In the construction of Tongbai Pumped Storage Power Station in Tiantai County, Zhejiang Province, the reinforcement task of C2 mark (water delivery system) fell on my head again. With previous work experience, I can say that I have a good plan for this job, but I am still strict with myself, not seeking the best, but seeking better, and trying to make my ability by going up one flight of stairs. On the premise of meeting the design requirements, try to reduce the overlap of steel bars, save materials and reduce costs.
In the process of making steel bars in the main lock chamber, in order to ensure the correct position and spacing of steel bars, and to ensure the smooth installation in the future, I made scientific adjustments to the original manual mold, which solved the shortcomings of insufficient arc length and inaccurate radian of the original mold, thus greatly improving the accuracy of steel bar making and minimizing the deformation and width error of steel bars. In the process of making floor reinforcement, I made the mould of top arch reinforcement with angle iron. When making, I cut a triangular mouth every 15cm on the angle iron side, and the distance from the first triangular mouth to the last triangular mouth is equal to the endothelial length of the top arch reinforcement. Then I bent the angle iron into a circle and fixed it on the chassis. After several attempts, I finally determined the appropriate die diameter, which laid the foundation for the production of steel bars.
The main reinforcement diagram of the straight section of two inclined shafts in the water conveyance system requires 8 relatively short φ 25 steel bars per circle. The reason why short main reinforcement is used in the design is that it is inconvenient to transport reinforcement in inclined shafts, that is to say, there are 8 laps in each lap, and the length of each lap is calculated as 40d, each lap is 1m, and each lap is 8m. After receiving the bill of materials, I had an intuition that it was a waste of steel bars, so after on-site investigation, I felt that the length of each steel bar could be increased on the premise of ensuring smooth transportation of steel bars, and the length of main reinforcement per circle could be reduced from 8 to 6, the shortest steel bar was 4.5 m, and the length of the other five steel bars was 6 m, which not only ensured the wrong head rate of 25%, but also reduced two laps, that is, two steel bars were saved per circle. Each of the two inclined shafts is more than 360 meters long, and the main reinforcement spacing per circle is 15 cm, that is, more than 2,400 circles, and each circle saves 2 m of reinforcement, so that each well saves nearly 5000 m of reinforcement and two wells save10,000 m of reinforcement. Through this steel bar production, I love this steel bar worker even more, because it will not only bring you the joy of success, but also save materials, reduce costs and increase benefits for the unit because of your efforts and research.
"No pains, no gains", after years of hard work and unremitting efforts, has made some achievements, but the bureau has given me a high honor. It has been rated as an advanced production worker and an expert in production for many times. As an excellent senior engineer, I have been encouraged by the bureau again and again, and I have been applauded by my comrades again and again. I have always turned these encouragements and applause into the motivation of my work, because I always believe in "natural selection, survival of the fittest". Because of this, I have been constantly improving myself and perfecting myself, and only once and for all have I strengthened my belief and determination to obtain the qualification certificate of technician. As an excellent senior engineer, I am eager to further enrich my knowledge on the platform of technicians, seek reasonable improvement measures, do my best to show my talents and abilities, and continue to carry forward the fine style of passing on, helping and leading.