Construction method for finishing and leveling foundation surface of cast-in-place shock absorber

Abstract

The invention relates to a cast-in-place shock absorber foundation plane fine leveling construction method which comprises the following steps: step 1, liquid is injected into an annular drainage ditch surrounding the periphery of a concrete foundation plane so as to establish a still water reference plane; 2, detecting the concrete foundation surface according to the still water reference surface, and marking a convex part higher than the still water reference surface on the concrete foundation surface; thirdly, the protruding part is polished; 4, the concrete foundation surface is subjected to cyclic detection and grinding till the standard is reached; by means of the arrangement, ultrahigh-precision fine leveling of the large forging damping foundation plane is achieved, large machines are not used in the construction process, and the construction cost is saved; and meanwhile, the construction efficiency and the construction quality are improved.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a construction method for precisely leveling the foundation surface of a cast-in-place shock absorber. Background Technology

[0002] Large forged vibration damping foundations have extremely stringent requirements for surface flatness, typically requiring an accuracy standard of ±1mm / 1m. However, traditional cast-in-place concrete structures struggle to meet this requirement, severely impacting the installation accuracy and performance of the vibration dampers.

[0003] Currently, laser screed machines are commonly used for ground construction with strict flatness requirements. However, laser screed machines are only suitable for overall flattening of large areas. For scenarios such as large forged vibration damping foundations, which require extremely high local precision and may not require large-area overall operation, laser screed machines lack flexibility. Furthermore, the investment of large machinery increases construction costs and cannot specifically address the problem of substandard flatness caused by local protrusions after rough leveling of cast-in-place concrete foundations.

[0004] Therefore, there is an urgent need for a construction method that can accurately, efficiently, and at low cost solve the problem of fine leveling of the foundation surface for large forging vibration damping. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a construction method for precisely leveling the foundation surface of cast-in-place shock absorbers. Its advantages include achieving ultra-high precision leveling of the concrete foundation surface, while reducing the use of large machinery and saving construction costs.

[0006] The above-mentioned objective of this invention is achieved through the following technical solution: a construction method for precisely leveling the foundation surface of a cast-in-place shock absorber, comprising the following steps: Step 1: Establish a static water reference surface by injecting liquid into the annular drainage ditch surrounding the concrete foundation surface. Step 2: Detect the concrete foundation surface based on the static water reference surface, and mark the raised portion on the concrete foundation surface that is higher than the static water reference surface; Step 3: Grind the raised portion; Step 4: Continue to test and polish the concrete base surface until it meets the standards.

[0007] Preferably, the construction method for precisely leveling the foundation surface of a cast-in-place shock absorber provided by the present invention includes, in step one, establishing a static water reference surface by injecting liquid into an annular drainage ditch surrounding the concrete foundation surface, comprising: Inject liquid into the annular drainage ditch surrounding the concrete foundation until the liquid level reaches the preset elevation of the finished foundation surface. After injection, the liquid is allowed to stand, so that the liquid surface in the annular drainage ditch forms a static horizontal liquid surface, which serves as a static water reference surface.

[0008] Preferably, the construction method for precisely leveling the foundation surface of a cast-in-place shock absorber provided by the present invention includes, in step two, inspecting the concrete foundation surface according to the static water reference surface and marking the raised portion on the concrete foundation surface that is higher than the static water reference surface, including: The elevation difference between the concrete base surface and the static water reference surface is detected using an immersion line, and any protrusions in the concrete base surface that are higher than the static water reference surface are marked.

[0009] Preferably, the construction method for precisely leveling the foundation surface of the cast-in-place shock absorber provided by the present invention involves marking the area of ​​the raised portion with a marker pen and indicating the height value of the raised portion on the concrete foundation surface.

[0010] Preferably, the construction method for precisely leveling the foundation surface of the cast-in-place shock absorber provided by the present invention includes, in step three, grinding the protruding portion, comprising: The raised portion marked on the concrete base surface is ground in layers and progressively using a grinder. During the grinding process, the current elevation of the grinding area is repeatedly checked with reference to the static water reference surface. The grinding sequence proceeds in an orderly manner from one end of the concrete base surface to the other end.

[0011] Preferably, the construction method for finely leveling the foundation surface of the cast-in-place shock absorber provided by the present invention includes, in step four, cyclically testing and grinding the concrete foundation surface until it meets the standard, comprising: After completing one round of grinding of the concrete foundation surface, liquid is injected back into the annular drainage ditch to the preset elevation of the finished foundation surface and left to stand to form a reference water level. Repeat step two to perform a full-range inspection of the concrete foundation surface. If there are protrusions, repeat step three to grind them. Repeat this process until the height difference between all measuring points on the concrete foundation surface and the reference water surface meets the preset error requirements.

[0012] Preferably, the construction method for finely leveling the foundation surface of the cast-in-place shock absorber provided by the present invention, after step four, cyclically testing and grinding the concrete foundation surface until it meets the standard, further includes: When the height difference between all measuring points on the concrete foundation surface and the reference water level is within the allowable error and there are no abrupt steps on the surface of the concrete foundation surface, the liquid in the annular drainage ditch is discharged through the collection well connected to the annular drainage ditch, the floating dust and debris on the concrete foundation surface are cleaned, the concrete foundation surface is comprehensively measured and verified, and the finished product is protected.

[0013] Preferably, the construction method for finely leveling the foundation surface of a cast-in-place shock absorber provided by the present invention further includes, before step one, establishing a static water reference surface by injecting liquid into the annular drainage ditch surrounding the concrete foundation surface: The construction environment meets the external interference conditions of no wind, no strong airflow, and no vibration from large equipment; Inspect and clean the annular drainage ditch surrounding the concrete foundation surface and the collection well connected to the annular drainage ditch, ensuring that there are no debris in the annular drainage ditch and the collection well and that the leakage points are unobstructed.

[0014] Preferably, in the construction method for precisely leveling the foundation surface of the cast-in-place shock absorber provided by the present invention, the grinding machine is equipped with diamond grinding discs.

[0015] Preferably, in the construction method for precisely leveling the foundation surface of the cast-in-place shock absorber provided by the present invention, the liquid used is clean water.

[0016] In summary, the beneficial technical effects of this invention are as follows: 1. By utilizing the physical property that still water naturally forms a horizontal surface under the action of gravity, a still water reference surface is created, which can meet the flatness detection requirements of ±1mm / 1m for large forged vibration damping foundations, thus improving the detection accuracy; 2. By using the immersion line in conjunction with the still water reference surface, the "high points" on the entire foundation surface can be quickly and intuitively identified, resulting in high detection efficiency, especially suitable for large-area reference surface detection, significantly shortening the detection time and improving construction efficiency; 3. The excess material left by the "rather convex than concave" process is directly removed by grinding. The construction logic is clear, avoiding blind construction; grinding the protruding points with a grinding machine can effectively preserve the integrity of the concrete base surface and avoid defects such as depressions and steps during the grinding process; 4. Through the cyclical operation mode of "inspection-grinding-re-inspection", the entire base surface can be gradually and systematically converged to a uniform ultra-high precision level, the construction process is controllable and the results are reliable; at the same time, there is no need to use large machinery such as laser leveling machines, reducing the investment in large equipment, significantly saving construction costs, and the construction flexibility is higher, which is suitable for fine leveling operations of various high-precision base surfaces. Attached Figure Description

[0017] Figure 1 This is a flowchart of the construction method for finely leveling the foundation surface of a cast-in-place shock absorber provided in an embodiment of the present invention.

[0018] Figure 2 This is a plan view of the concrete foundation surface in the construction method for finely leveling the foundation surface of a cast-in-place shock absorber provided in this embodiment of the invention.

[0019] Figure 3 This is a sectional view of the external foundation pit in the construction method for finely leveling the foundation surface of the cast-in-place shock absorber provided in the embodiment of the present invention.

[0020] In the diagram, 1 is the concrete foundation surface; 2 is the circular drainage ditch; and 3 is the water collection well. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Reference Figure 1 The present invention discloses a construction method for precisely leveling the foundation surface of a cast-in-place shock absorber, comprising the following steps: Step 1: Establish a static water reference surface by injecting liquid into the annular drainage ditch 2 surrounding the concrete foundation surface 1. Step 2: Detect the concrete foundation surface 1 based on the static water reference surface, and mark the raised part on the concrete foundation surface 1 that is higher than the static water reference surface. Step 3: Grind the raised parts; Step 4: Continue to test and grind the concrete base surface 1 until it meets the standards; this setting achieves ultra-high precision leveling of the concrete base surface 1, while reducing the use of large machinery and saving construction costs.

[0023] The liquid used is clean water.

[0024] Continue to refer to Figures 2 to 3 In this embodiment, before step one, which involves injecting liquid into the annular drainage ditch 2 surrounding the concrete foundation surface 1 to establish a static water reference surface, the following steps are also included: The construction environment meets the external interference conditions of no wind, no strong airflow, and no vibration from large equipment; this setting is to maintain the absolute stillness and levelness of the hydrostatic reference surface and avoid external interference from affecting the detection accuracy.

[0025] Inspect and clean the annular drainage ditch 2 surrounding the concrete foundation surface 1 and the collection well 3 connected to the annular drainage ditch 2, ensuring that there are no debris in the annular drainage ditch 2 and the collection well 3 and that the leakage points are unobstructed; this setting is to prepare for the subsequent water injection to form a static water reference surface.

[0026] Specifically, before construction, large equipment around the construction area should be cleared to prevent vibrations from equipment operation. At the same time, the ambient wind speed should be monitored to ensure that there is no strong airflow interference. The pre-installed annular drainage ditch 2 around the foundation and the collection well 3 connected to the annular drainage ditch 2 should be inspected. Concrete debris and other debris in the ditch and well should be cleaned. The leakage of the ditch and well walls should be checked, and minor leakage points should be sealed to ensure that there are no debris in the ditch and well and that the leakage points are unobstructed.

[0027] It should be noted that during the initial rough leveling stage of the foundation concrete, the principle of "rather convex than concave" was followed, meaning the overall pouring elevation of the foundation concrete was higher than the design elevation, leaving room for subsequent fine leveling and grinding. Further, in this embodiment, step one, establishing a static water reference surface by injecting liquid into the annular drainage ditch 2 surrounding the concrete foundation surface 1, includes: S11. Inject liquid into the annular drainage ditch 2 surrounding the concrete foundation surface 1 until the liquid level reaches the preset elevation of the finished foundation surface.

[0028] Specifically, the elevation of the finished foundation surface is accurately measured and marked on the wall of the circular drainage ditch 2. Clean water is slowly injected into the circular drainage ditch 2 and the collection well 3 to avoid water level fluctuations caused by water flow impact. The water level is closely observed during the injection process until the water level is precisely aligned with the elevation of the finished foundation surface, at which point the water injection is stopped.

[0029] S12. After injection, let the liquid stand still so that the liquid surface in the annular drainage ditch 2 forms a static horizontal liquid surface, which serves as the static water reference surface. By utilizing the physical property that static water naturally forms a horizontal surface under the action of gravity, a low-cost and highly accurate detection reference can be obtained. The principle is scientific and reliable.

[0030] Specifically, after the water is injected, it is left to stand for a preset time to ensure that the water surface in the annular drainage ditch 2 forms a large-scale, continuous, and static absolute horizontal surface. This water surface is the static water reference surface for subsequent inspection and grinding of the concrete foundation surface 1.

[0031] The preset duration ranges from 30 to 40 minutes.

[0032] Continue to refer to Figure 2 In this embodiment, step two, which involves inspecting the concrete base surface 1 based on the static water reference surface and marking the protruding parts of the concrete base surface 1 that are higher than the static water reference surface, includes: using a wetting line to detect the height difference between the concrete base surface 1 and the static water reference surface, and marking the protruding parts of the concrete base surface 1 that are higher than the static water reference surface.

[0033] It should be noted that the saturation line, as a tool for measuring elevation differences, is the intersection line formed between the water surface and the protrusion of the concrete foundation.

[0034] The principle of the saturation line formation is as follows: When the static water reference surface (the static water surface in the annular drainage ditch 2) comes into contact with the concrete base surface 1, the liquid adheres to the concrete base surface 1 due to its wetting properties, and a clear intersection line is naturally formed between the raised part of the concrete base surface 1 and the static water reference surface. This intersection line is the saturation line. By observing and measuring the relative position of this intersection line and the static water reference surface, the height difference between the concrete base surface 1 and the static water reference surface can be quickly and systematically detected, and the raised part of the concrete base surface 1 can be accurately identified. It has the characteristics of simple operation and intuitive detection, and is suitable for high-precision detection requirements of ±1mm / 1m.

[0035] Specifically, construction workers observe the contact state between the static water reference surface and the concrete base surface to obtain the wetting line. By observing the adhesion of the wetting line, they can quickly identify all concrete protrusions on the concrete base surface 1 that are higher than the static water reference surface. By measuring the height difference between the wetting line and the protrusion, the height of the protrusion can be determined. The detected protrusions are clearly and precisely marked, and their approximate height is indicated. This setup facilitates the precise execution of subsequent grinding operations, accurately locating all "high points" that need to be removed, and avoiding blind grinding.

[0036] The marking method on the concrete base surface 1 involves using a marker to circle the area of ​​the raised part and marking the height value of the raised part.

[0037] Furthermore, in this embodiment, step three, grinding the protruding part, includes: using a grinder to grind the marked protruding part on the concrete base surface 1 in layers and progressively. During the grinding process, the current elevation of the grinding area is repeatedly checked with reference to the static water reference surface. The grinding sequence proceeds in an orderly manner from one end of the concrete base surface 1 to the other end.

[0038] The grinding machine is equipped with diamond grinding discs.

[0039] Specifically, a grinding machine that can precisely control the grinding depth is used. According to the marked raised areas, the grinding sequence proceeds in an orderly manner from one end of the concrete base surface 1 to the other end, ensuring the systematicness and uniformity of the grinding operation and ensuring the overall flatness of the concrete base surface 1.

[0040] For areas with a protrusion height > 2mm, layered grinding is used, with each layer's grinding depth controlled to 0.5mm. After grinding, the current elevation of the ground area is checked again using the static water reference surface as a reference. For areas with a protrusion height ≤ 2mm, multiple micro-grinding operations are used, with the grinding depth controlled to within 0.3mm, to ensure no depressions after grinding. This setup follows the principle of "multiple, micro-grinding" during the grinding process to ensure accurate grinding depth and avoid causing depressions on the concrete foundation surface 1 due to excessive grinding in one go.

[0041] Furthermore, in this embodiment, step four, continuously testing and grinding the concrete base surface 1 until it meets the standard, includes: S41. After completing one round of grinding of the concrete base surface 1, inject liquid back into the annular drainage ditch 2 to the preset elevation of the base finished surface and let it stand to form a reference water level.

[0042] It should be noted that the base water surface and the still water reference surface are the same reference surface.

[0043] After the concrete foundation surface 1 is ground, the water in the annular drainage ditch 2 is drained through the collection well 3 connected to the annular drainage ditch 2. Then, clean water is injected back into the annular drainage ditch 2 to the preset elevation of the foundation surface and left to stand for the predicted time to form a reference water level.

[0044] The predicted duration ranges from 30 to 40 minutes.

[0045] S42. Repeat step two to perform a full-range inspection of the concrete foundation surface 1. If there are protruding points, repeat step three to grind them. Repeat this process until the height difference between all measuring points on the concrete foundation surface 1 and the reference water surface meets the preset error requirements.

[0046] Specifically, repeat step two to conduct a full-range inspection of the concrete foundation surface 1 to comprehensively check whether there are still any protrusions. If there are protrusions, repeat step three for fine grinding. This cycle of "inspection-marking-grinding-re-inspection" continues until the height difference between all measuring points on the concrete foundation surface 1 and the reference water surface is ≤1mm / m and there are no protrusions. In this way, the entire concrete foundation surface 1 is gradually and systematically converged to a uniform ultra-high precision level, ensuring that the construction process is controllable and the results are reliable.

[0047] Furthermore, in this embodiment, after step four, cyclically testing and polishing the concrete base surface 1 until it meets the standard, the method further includes: when the height difference between all measuring points of the concrete base surface 1 and the reference water surface is within the allowable error and there are no abrupt steps on the surface of the concrete base surface 1, the liquid in the annular drainage ditch 2 is discharged through the collection well 3 connected to the annular drainage ditch 2, the floating dust and debris of the concrete base surface 1 are cleaned, the concrete base surface 1 is comprehensively measured and verified, and the finished product is protected.

[0048] Specifically, when the height difference between all measuring points on the entire concrete foundation surface 1 and the reference water surface is within the allowable error (i.e., meeting the flatness design requirement of ±1mm / 1m), and there are no abrupt steps on the concrete foundation surface 1, the fine leveling work is considered complete. At this time, the accumulated water in the annular drainage ditch 2 is drained through the water collection well 3, and the floating dust and grinding debris on the concrete foundation surface are cleaned with a high-pressure water gun to avoid debris affecting the subsequent installation of the shock absorbers. After drying, a level is used to conduct a final comprehensive measurement and verification of the concrete foundation surface 1. After confirming that the flatness meets the requirements, a waterproof and dustproof membrane is laid on the foundation surface to protect the finished product, and the fine leveling construction is completed.

[0049] The construction method for fine-leveling the foundation surface of cast-in-place shock absorbers provided in this application includes the following steps: Step 1, injecting liquid into the annular drainage ditch 2 surrounding the concrete foundation surface 1 to establish a static water reference surface; Step 2, inspecting the concrete foundation surface 1 based on the static water reference surface and marking the raised parts on the concrete foundation surface 1 that are higher than the static water reference surface; Step 3, grinding the raised parts; Step 4, continuously inspecting and grinding the concrete foundation surface 1 until it meets the standard; This setup achieves ultra-high precision leveling of the foundation surface of large forged shock absorbers, without the use of large machinery during construction, saving construction costs; at the same time, it improves construction efficiency and construction quality.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A construction method for precisely leveling the foundation surface of a cast-in-place shock absorber, characterized in that: Includes the following steps: Step 1: Establish a static water reference surface by injecting liquid into the annular drainage ditch surrounding the concrete foundation surface. Step 2: Detect the concrete foundation surface based on the static water reference surface, and mark the raised portion on the concrete foundation surface that is higher than the static water reference surface; Step 3: Grind the raised portion; Step 4: Continue to test and polish the concrete foundation surface until it meets the standards.

2. The construction method for precisely leveling the foundation surface of a cast-in-place shock absorber according to claim 1, characterized in that: Step 1: Establish a static water reference surface by injecting liquid into a circular drainage ditch surrounding the concrete foundation surface, including: Inject liquid into the annular drainage ditch surrounding the concrete foundation until the liquid level reaches the preset elevation of the finished foundation surface. After injection, the liquid is allowed to stand, so that the liquid surface in the annular drainage ditch forms a static horizontal liquid surface, which serves as a static water reference surface.

3. The construction method for precisely leveling the foundation surface of a cast-in-place shock absorber according to claim 1, characterized in that: Step 2: Inspect the concrete foundation surface based on the static water reference surface, and mark the raised portions on the concrete foundation surface that are higher than the static water reference surface, including: The elevation difference between the concrete base surface and the static water reference surface is detected using an immersion line, and any protrusions in the concrete base surface that are higher than the static water reference surface are marked.

4. The construction method for precisely leveling the foundation surface of a cast-in-place shock absorber according to claim 3, characterized in that: The raised portion is marked by circling it with a marker and indicating its height.

5. The construction method for precisely leveling the foundation surface of a cast-in-place shock absorber according to claim 1, characterized in that: Step 3: Polish the raised portion, including: The raised portion marked on the concrete base surface is ground in layers and progressively using a grinder. During the grinding process, the current elevation of the grinding area is repeatedly checked with reference to the static water reference surface. The grinding sequence proceeds in an orderly manner from one end of the concrete base surface to the other end.

6. The construction method for precisely leveling the foundation surface of a cast-in-place shock absorber according to claim 1, characterized in that: Step 4: Continuously test and grind the concrete foundation surface until it meets the standards, including: After completing one round of grinding of the concrete foundation surface, liquid is injected back into the annular drainage ditch to the preset elevation of the finished foundation surface and left to stand to form a reference water level. Repeat step two to perform a full-range inspection of the concrete foundation surface. If there are protrusions, repeat step three to grind them. Repeat this process until the height difference between all measuring points on the concrete foundation surface and the reference water surface meets the preset error requirements.

7. The construction method for precisely leveling the foundation surface of a cast-in-place shock absorber according to claim 6, characterized in that: After step four, where the concrete foundation surface is repeatedly inspected and polished until it meets the standards, the process also includes: When the height difference between all measuring points on the concrete foundation surface and the reference water level is within the allowable error and there are no abrupt steps on the surface of the concrete foundation surface, the liquid in the annular drainage ditch is discharged through the collection well connected to the annular drainage ditch, the floating dust and debris on the concrete foundation surface are cleaned, the concrete foundation surface is comprehensively measured and verified, and the finished product is protected.

8. The construction method for precisely leveling the foundation surface of a cast-in-place shock absorber according to claim 1, characterized in that: Before step one, which involves injecting liquid into the annular drainage ditch surrounding the concrete foundation to establish a static water reference surface, the following steps are also included: The construction environment meets the external interference conditions of no wind, no strong airflow, and no vibration from large equipment; Inspect and clean the annular drainage ditch surrounding the concrete foundation surface and the collection well connected to the annular drainage ditch, ensuring that there are no debris in the annular drainage ditch and the collection well and that the leakage points are unobstructed.

9. The construction method for precisely leveling the foundation surface of a cast-in-place shock absorber according to claim 5, characterized in that: The grinder is equipped with diamond grinding discs.

10. The construction method for precisely leveling the foundation surface of a cast-in-place shock absorber according to claim 1, characterized in that: The liquid used is clean water.

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