Rotational flow well slip form construction elevation and flatness control method

Abstract

The invention relates to the technical field of slip form construction, in particular to a rotational flow well slip form construction elevation and flatness control method which comprises the following steps: S1, after a slip form device is mounted, measuring the perpendicularity of a supporting rod of a hydraulic device by using a theodolite, and placing an elevation datum point on a portal frame by using a level gauge; s2, marking an elevation datum point by using red paint; s3, in the well wall sliding and lifting process, a theodolite is used for conducting perpendicularity correction on the supporting rods every time one supporting rod is added, and correction is conducted in time; s4, after the supporting rods are straightened, along with continuous rising of the slip form device, each supporting rod is measured every 1 m, and scale marks are drawn every 100 mm; remeasuring and leveling the elevations on all the supports every 1m by using a laser swinger to ensure the flatness; a level gauge is used for retesting the placed elevation datum point every day, and when the deviation is too large, adjustment is conducted immediately. The slip-form construction method has the technical effects that the slip-form construction quality can be improved, and the well wall elevation and flatness deviation can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of slip form construction, in particular to a whirl flow well slip form construction elevation and flatness control method. BACKGROUND

[0002] Slip form construction is a construction technology that can rise with the height of the column or wall, and is commonly used in the construction of cylindrical high-rise buildings. When the site material storage condition is limited, adopting slip form construction can better solve the site problem, and the construction speed is fast, and the loss rate of the formwork can be reduced. Slip form construction technology is a construction technology with high mechanization degree, fast construction speed, less site occupation, strong structure, no construction joint on the structure surface, good seismic resistance, safe operation guarantee, environmental protection and significant comprehensive benefits in concrete structure engineering and reinforced concrete. In recent years, slip form construction technology has been constantly innovated, greatly enriching the traditional slip form construction technology. As a new construction technology, it not only innovates the technology, but more importantly, it can reduce the construction cost and improve the quality benefit.

[0003] In slip form construction, the control of well wall elevation and flatness deviation is the most important, which is the key to whether the slip form construction can be successful, and is an important indicator of engineering quality. This indicator is clearly specified in the design drawings and construction specifications. In slip form construction, once the elevation and flatness deviation occurs, it is difficult to correct. If the deviation is too large, the platform will be inclined and unstable, the formwork will be deformed, the cylindrical concrete will be cracked, out of skirt, and slurry leakage, and in severe cases, the slip form construction will fail. SUMMARY

[0004] In order to solve the problems in the prior art, the present application provides a whirl flow well slip form construction elevation and flatness control method.

[0005] The whirl flow well slip form construction elevation and flatness control method provided by the present application adopts the following technical scheme: A whirl flow well slip form construction elevation and flatness control method, comprising the following steps: S1, after the installation of the slip form device is completed, the verticality of the support rod of the hydraulic device is measured using a theodolite, a level is used to place an elevation reference point on the door frame, an elevation is drawn on each support rod through the elevation reference point, and a scale is marked. After the elevation is placed, it is re-measured to ensure that each level point has the same elevation and to ensure the accuracy of the subsequent construction elevation; S2, the elevation reference point is marked using red paint and protected, and the elevation reference point is used for re-measurement during the subsequent slip form process; S3. During the well wall sliding process, as the height increases, the number of support rods of the hydraulic lifting equipment increases. For each additional support rod, a theodolite is used to correct the verticality of the support rod to correct deviations in a timely manner and prevent serious verticality deviations, which could lead to excessive sliding height deviations and affect construction quality. S4. After the support rods are straightened, as the slipform device is continuously raised above the jacks, each support rod is measured every 1m, using the elevation benchmark as a reference, and scale marks are drawn every 100mm according to the actual elevation. The marks are clear and accurate. Every 1m, a laser level is used to remeasure and level all the supports to ensure flatness and improve construction quality. The elevation benchmark is remeasured daily using a level, and adjustments are made immediately if the deviation is too large. The measurement results can be used as the basis for correction and also as the basis for quality assessment of the slipform concrete.

[0006] Optionally, materials and equipment on the platform should be stacked evenly, and unused materials should be returned to the ground in a timely manner to prevent the platform from tilting.

[0007] Optionally, during the slipforming process, the jacks are manually adjusted to control the slipforming height at the elevation of the support rod that has been remeasured. Each slipforming of the jacks shall not exceed 300mm, and the height of each jack shall be kept consistent. The height after the slipforming is remeasured twice a day using a laser level.

[0008] Compared with the prior art, the present invention has the following technical effects: In slipform construction, a theodolite is used to control the verticality of the support rods. After adjustment, scale marks are drawn on the support rods with the elevation benchmark as the reference point. During slipforming, the jacks control the height according to the scale marks, and a laser level is used to adjust the flatness. Compared with the prior art, this invention reduces the influence of external factors on the measurement errors of elevation and flatness, which can improve the quality of slipform construction, reduce the deviation of well wall elevation and flatness, and increase the first-pass yield of slipform construction. Attached Figure Description

[0009] Figure 1 This is the front view of the slipform construction method in this invention; Figure 2 This is a top view of the slipform construction method in this invention.

[0010] Explanation of reference numerals in the attached diagram: 1. Support rod; 2. Jack; 3. Gantry frame; 31. Elevation benchmark. Detailed Implementation

[0011] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 The present invention will be described in further detail below.

[0012] Reference Figure 1 andFigure 2 This invention discloses a method for controlling the elevation and flatness of a vortex well slipform construction, comprising the following steps: S1. After the slipform device is installed, use a theodolite to measure the verticality of the support rod 1 of the hydraulic device to improve construction quality and reduce errors. Use a level to place elevation benchmark 31 on the portal frame 3. Draw the elevation on each support rod 1 through the benchmark and mark the scale. After the elevation is placed, re-measure to ensure that the elevation of each benchmark is the same, and to ensure the accuracy of the elevation in subsequent construction.

[0013] S2. Mark the elevation reference point 31 with red paint and protect it. Use the elevation reference point 31 for re-measurement during the slipforming process.

[0014] S3. During the wellbore sliding process, as the height increases, the number of support rods 1 of the hydraulic lifting equipment increases. Each time a support rod 1 is added, a theodolite is used to correct the verticality of the support rod 1 to correct deviations in a timely manner and prevent serious deviations in verticality, which could lead to excessive deviations in sliding height and affect the construction quality.

[0015] S4. After straightening support rod 1, as the slipform device rises, above jack 2, using elevation benchmark 31 as a reference, measure each support rod 1 every 1m, and mark the elevation every 100mm, ensuring the marks are clear and accurate according to the actual elevation. Every 1m, use a laser level to remeasure and level all supports, ensuring flatness and improving construction quality. Daily, use a level to remeasure the placed elevation benchmark 31; if the deviation is too large, adjust immediately. The measurement results serve as the basis for corrections and also as the basis for evaluating the quality of the slipform concrete.

[0016] S5. Materials and equipment on the platform should be stacked evenly and not placed in one place. Unused materials should be returned to the ground in a timely manner to prevent the platform from tilting.

[0017] S6. During the sliding process, the jack 2 is manually adjusted to control the sliding height at the elevation of the support rod 1 after retesting. The jack 2 shall not slide more than 300mm each time. The height of each jack 2 shall be consistent. The height after the rise shall be retested twice a day using a laser level.

[0018] The portal frame 3 is rigidly connected to the lifting frame of the sliding mold device.

[0019] Compared with existing technologies, this invention reduces the influence of external factors on elevation and flatness measurement errors, which can improve the quality of slipform construction, reduce well wall elevation and flatness deviations, and increase the first-pass yield of slipform construction.

[0020] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A method for controlling the elevation and flatness during slipform construction of a vortex well, characterized in that: Includes the following steps: S1. After the slipform device is installed, use a theodolite to measure the verticality of the support rod (1) of the hydraulic device, use a level to place the elevation reference point (31) on the portal frame (3), draw the elevation on each support rod (1) through the elevation reference point (31) and mark the scale. After the elevation is placed, re-measure it to ensure that the elevation of each level point is the same and to ensure the accuracy of the elevation in subsequent construction. S2. Mark the elevation reference point (31) with red paint and protect it. Then, use the elevation reference point (31) to re-measure during the slip molding process. S3. During the well wall sliding process, as the height increases, the number of support rods (1) of the hydraulic lifting equipment increases. For each additional support rod (1), the verticality of the support rod (1) is corrected using a theodolite to correct the deviation in time and prevent serious vertical deviation, which would lead to excessive sliding height deviation and affect the construction quality. S4. After the support rod (1) is straightened, as the slipform device continues to rise, above the jack (2), with the elevation benchmark (31) as the reference, each support rod (1) is measured every 1m, and a scale mark is drawn every 100mm. The mark is made according to the actual elevation, and the mark is clear and accurate. Every 1m, the elevation on all supports is re-measured and leveled using a laser leveling instrument to ensure flatness and improve construction quality. The elevation benchmark (31) is re-measured daily using a level. When the deviation is too large, it is adjusted immediately. The measurement results can be used as the basis for correction and also as the basis for quality assessment of slipform concrete.

2. The method for controlling the elevation and flatness of slipform construction in a vortex well according to claim 1, characterized in that: Materials and equipment on the platform should be stacked evenly, and unused materials should be returned to the ground in a timely manner to prevent the platform from tilting.

3. The method for controlling the elevation and flatness of slipform construction in a vortex well according to claim 1 or 2, characterized in that: During the sliding process, the jack (2) is manually adjusted to control the sliding height at the elevation of the support rod (1) after retesting. The jack (2) shall not slide more than 300mm each time. The height of each jack (2) shall be consistent. The height after the rise shall be retested twice a day using a laser leveling instrument.

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