Embedding accuracy control construction method for embedded part of overlong equipment foundation platform

A technology of equipment foundation and construction method, which is applied in the direction of basic structure engineering, architecture, building structure, etc., can solve the problems of inconvenient control and adjustment of pre-embedded precision, high investment cost, and long construction period, so as to shorten the installation and construction period and save investment The effect of low cost and simple construction steps

Inactive Publication Date: 2011-07-27
SCEGC NO 6 CONSTR ENG GRP CO LTD
5 Cites 34 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a construction method for controlling the embedding accuracy of the embedded parts of the super-long equipment foundation platform, which has reasonable design, simple construction steps, easy construction quality control and c...
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Abstract

The invention discloses an embedding accuracy control construction method for an embedded part of an overlong equipment foundation platform, including the following steps: firstly, processing the embedded part and the installation screw of the embedded part; secondly, molding construction of the lower middle reinforced concrete structure of the foundation platform needing construction: a plurality of vertical reinforcing steel bars extend out from the top of the lower middle reinforced concrete structure under construction of molding and are arranged vertically; thirdly, installing the installation screw of the embedded part; fourthly, installing a nut at the bottom of the threaded section of the installation screw of the embedded part; fifthly, installing and positioning the embedded part; sixthly, installing a nut on top of the threaded section of the installation screw of the embedded par; seventhly, molding construction of the upper reinforced concrete structure of the foundation platform needing construction; and eighthly, subsequent construction treatment. The method has in design, simple construction steps, easy control of construction quality, high construction accuracy and good in use effect, and can solve the problems of the existing embedding construction method of embedding parts that the embedding accuracy is inconvenient to control, the embedding accuracy is low, the construction quality is poor, the investment cost is high, the construction period is long, and the like.

Application Domain

Technology Topic

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  • Embedding accuracy control construction method for embedded part of overlong equipment foundation platform
  • Embedding accuracy control construction method for embedded part of overlong equipment foundation platform
  • Embedding accuracy control construction method for embedded part of overlong equipment foundation platform

Examples

  • Experimental program(1)

Example Embodiment

[0044] Such as figure 1 The shown construction method for the embedded precision control of the embedded parts of the super-long equipment foundation platform includes the following steps:
[0045] Step 1. Embedded parts and embedded parts installation screw processing: Use machining equipment to process embedded parts 1, and use drilling equipment to drill a number of identical and uniform dimensions on the processed embedded parts 1 Vertically arranged circular through holes, the embedded part 1 is a horizontal steel plate and is horizontally embedded on the top of the foundation platform to be constructed; at the same time, cutting equipment and thread processing equipment are used to process multiple structures and sizes that are the same The embedded part is installed with the screw 2, and a plurality of nuts 3 to be used in conjunction with the threaded section of the embedded part installation screw 2 are processed accordingly, and the structure and size of the plurality of nuts 3 are the same, and the number of the nuts 3 is the preset The number of embedded part mounting screws 2 is twice as large; the number of the embedded part mounting screws 2 is the same as the number of the circular through holes, and the outer diameter of the threaded section is the same as the inner diameter of the circular through hole. The number of the embedded part installation screws 2 is not less than four. In the actual construction process, the number of the embedded part installation screws 2 can be adjusted accordingly according to actual needs. In this embodiment, the number of the embedded part mounting screws 2 is four, and the four embedded part mounting screws 2 are respectively arranged on the four vertices of a square.
[0046] In this embodiment, when processing the embedded part 1, a whole steel plate is used for on-site cutting processing, and the flatness error of the whole steel plate is not more than 0.2 mm; and the machining equipment used is a shearing machine. In other words, after the steel plate enters the site, in addition to the retest of the raw material, the flatness of the entire steel plate needs to be inspected.
[0047] In this embodiment, when the embedded part mounting screw 2 is processed, steel bars are used as raw materials for processing. The length of the embedded part installation screw 2 is 300mm-350mm and the length of its threaded section is 100mm-120mm, and the diameter of the embedded part installation screw 2 is not less than 10mm. During actual processing, the size of the embedded part mounting screw 2 can be adjusted accordingly according to actual needs. And when the embedded part mounting screw 2 is processed, the cutting equipment used is a steel bar cutting machine, and the thread processing equipment used is a die. At the same time, the steel bars used to make the embedded part installation screw 2 are primary or secondary steel. The number of the embedded part mounting screw 2 is four and the number of the nut 3 is correspondingly eight.
[0048] Step 2. The lower part of the reinforced concrete structure of the foundation platform needs to be formed. The construction process is as follows:
[0049] 201. Reinforcement cage lashing: lashing the reinforcement cage of the middle and lower reinforced concrete structure 4 of the foundation platform that needs to be constructed for pouring and forming. The completed reinforcement cage is laid on the design and construction position of the foundation platform to be constructed, and The plurality of vertical steel bars 5 in the steel reinforcement cage all extend from the top of the tied steel reinforcement cage, and the number of the vertical steel bars 5 is the same as the number of circular through holes opened in step 1.
[0050] In this embodiment, the number of the vertical steel bars 5 is four.
[0051] 202. Formwork: on the outside of the steel reinforcement cage that has been bound in step 201, a forming formwork for pouring and forming the middle and lower reinforced concrete structure 4 is arranged.
[0052] 203. Concrete pouring construction: using the forming template supported in step 202, concrete pouring construction is performed on the middle and lower reinforced concrete structure 4.
[0053] 204. Demoulding: After the concrete poured in step 203 is completely solidified, the forming template supported in step 202 is removed, and the lower part of the reinforced concrete structure 4 formed by construction is obtained. The top of the middle and lower part of the reinforced concrete structure 4 The elevation is 500mm±20mm below the design elevation of the embedded part 1, and a plurality of the vertical steel bars 5 all extend from the top of the middle and lower reinforced concrete structure 4 formed by construction and are arranged vertically; the vertical steel bars 5 The top elevation is lower than the bottom design elevation of the embedded part 1.
[0054] In the actual operation process, the concrete pouring construction of the middle and lower reinforced concrete structure 4 is the first concrete pouring construction of the foundation platform to be constructed. In this embodiment, the forming construction process of the middle and lower reinforced concrete structure 4 is tied and supported by the steel cage, and then concrete is poured to a point of -500mm from the design elevation of the embedded part 1. The actual construction process can be based on actual needs Make adjustments accordingly. Adopting the first pouring construction of the middle and lower reinforced concrete structure 4, on the one hand, can limit the degree of freedom of the vertical steel bars 5 in the horizontal direction, and on the other hand, facilitate the placement and construction of the embedded parts 1. After removing the template in step 204, the vertical steel bars 5 and the concrete surface layer on the upper part of the middle and lower reinforced concrete structure 4 are cleaned.
[0055] Step 3. Embedded part installation screw installation: fix the multiple embedded part installation screws 2 processed in step one on the multiple vertical steel bars 5, and the multiple embedded part installation screws have been installed 2 are arranged on the same horizontal surface with the same installation height, so that the thread sections of each embedded part installation screw 2 are arranged upward and the thread sections of each embedded part installation screw 2 are arranged vertically; the embedded part The bottom elevation of the threaded section of the mounting screw 2 is lower than the height of at least one nut 3 at the bottom design elevation of the embedded part 1, and the top elevation of the threaded section is higher than the height of at least one nut 3 at the top design elevation of the embedded part 1; The installation and arrangement positions of the embedded part installation screw 2 are consistent with the arrangement positions of the plurality of circular through holes opened in step one. For the installation and layout position of the embedded part installation screw 2, see figure 2.
[0056] In this embodiment, the top of the vertical steel bars 5 in step 201 are all provided with inclined elbows, and in step one, the embedded part mounting screw 2 is processed, and the embedded part mounting screw 2 is not provided with threads by bending equipment. One end is bent to form an installation joint that is consistent with the inclination angle of the inclined elbow. When the embedded part installation screw 2 is installed in step 3, the embedded part installation screw 2 and the vertical reinforcement 5 pass through the corresponding The inclined elbow and the installation joint are tightly installed together, and after the installation is completed, the threaded section of the installation screw 2 of each embedded part and the vertical section of the installed vertical steel bar 5 are arranged coaxially.
[0057] In this embodiment, the bending equipment is a steel bar bending machine, and at the same time, a steel bar straightening machine needs to be used to straighten the thread section of the embedded part installation screw 2.
[0058] Step 4. Install the embedded part to install the screw at the bottom of the screw thread section nut installation: from top to bottom, install a nut 3 on the threaded section of the multiple embedded part installation screw 2 installed in step 3, and screw each nut 3 in At the bottom of the threaded section of the embedded part mounting screw 2, the nuts 3 installed on the multiple embedded part mounting screws 2 are all arranged on the same level, and the top elevation of each nut is not higher than the bottom design elevation of the embedded part 1. ; In this step, the nuts 3 installed are all lower nuts.
[0059] Step 5. Embedded parts installation and positioning: through the cooperation between the threaded sections of the multiple embedded part mounting screws 2 installed in step 4 and the multiple circular through holes opened in step 1, the embedded parts 1 Horizontally installed on the threaded section of multiple embedded part installation screws 2; at the same time, the actual installation position of the embedded part 1 is detected by the space positioning detection device, according to the design elevation of the embedded part 1 combined with the space positioning detection device And the elevation of the embedded part 1 is adjusted accordingly by adjusting the lower nut up and down to adjust the embedded part 1 to the design elevation. For the installation location of the embedded part 1, see image 3. In this embodiment, after the installation of the embedded part 1 is completed, the top of the threaded section of the installation screw 2 of each embedded part is higher than the designed elevation of the embedded part 1 by 80mm-100mm.
[0060] Step 6: Install a nut 3 on the top of the screw thread section of the embedded part installation: from top to bottom, install a nut 3 on the top of the thread section of the multiple embedded part installation screw 2 installed in step 3, and screw each nut 3 to Close to the top of the embedded part 1 installed in step 5; in this step, the installed nuts 3 are upper nuts; and after the upper nut is installed, the screw 2 is installed through the embedded part And the upper nut to accurately limit the embedded part 1 adjusted to the designed installation position.
[0061] In this embodiment, before installing the embedded part mounting screw 2 in step 3, it is necessary to use spatial positioning detection equipment to detect and calibrate the installation position and verticality of the multiple vertical steel bars 5, and the embedded part After the installation of the component mounting screw 2 is completed, weld and fix the connection between the embedded component mounting screw 2 and the vertical steel bar 5; after adjusting the embedded component 1 to the design elevation as described in step 5, The joints between the lower nuts and the embedded part mounting screw 2 are welded and fixed; after the upper nut is installed in step 6, the space positioning detection device is used to detect the actual installation position of the embedded part 1, and The installation position of the embedded part 1 is corrected by adjusting the upper nut up and down, and the connection between the embedded part installation screw 2 and the upper nut is welded and fixed after the correction is completed. In addition, the welding and fixing methods between the embedded part installation screw 2 and the vertical steel bar 5 and between the upper nut and the lower nut and the embedded part installation screw 2 are all spot welding.
[0062] In summary, in the actual construction process, after the installation of the embedded part installation screw 2 is completed, the embedded parts are installed and positioned and corrected accordingly. First, after detecting and correcting the position of the vertical steel bar 5, the embedded part mounting screw 2 is spot welded firmly with the vertical main steel bar 5 at the corresponding position, and the threaded part, that is, the threaded section, is 80mm higher than the height of the embedded part 1 100mm, screw the lower nut into the bottom of the threaded end of the embedded part mounting screw 2. Subsequently, the embedded part 1 is placed on the embedded part mounting screw 2, and the elevation of the embedded part 1 is precisely controlled by the up and down adjustment of the lower nut and the high-precision level (this is the first time to check the height of the embedded part). After the check is correct, spot weld the lower nut and the embedded part mounting screw 2 firmly to control the downward displacement of the embedded part 1. Then, screw the upper nut on the embedded part installation screw 2 and close it to the embedded part 1, and then check the elevation of the embedded part 1 (this is the second time to check the elevation of the embedded part). The nut and the embedded part mounting screw 2 are spot welded firmly to control the buoyancy generated when the concrete is poured in step 702 to make the embedded part 1 move upward.
[0063] Step 7. Forming construction of the reinforced concrete structure on the upper part of the foundation platform is required. The construction process is as follows:
[0064] 701. Formwork: On the outer peripheral side of the embedded part 1 that has been installed, a forming mold for pouring and forming the upper reinforced concrete structure of the foundation platform to be constructed is installed.
[0065] 702. Concrete pouring construction: concrete pouring the upper reinforced concrete structure on the upper part of the middle and lower reinforced concrete structure 4 that has been completed by using the forming mold supported in step 701.
[0066] 703. Concrete curing: according to conventional concrete curing methods, the concrete poured in step 702 is cured.
[0067] 704. Demolition: After the concrete poured in step 702 is completely solidified, the forming mold supported in step 701 is removed, and the middle and lower reinforced concrete structure 4 is connected as a whole and the embedded part 1 is embedded on the top. The upper reinforced concrete structure.
[0068] In this embodiment, the concrete poured in step 203 is concrete of the same grade as the concrete used in the pre-designed foundation platform to be constructed, and the concrete poured in step 702 is concrete with a higher strength than the concrete poured in step 203. This is the second concrete pouring, and the concrete beams and slabs laid on the construction foundation platform are simultaneously poured, and then the poured concrete is integrally cured.
[0069] In the actual construction process, before the concrete pouring construction in step 702, the upper concrete surface of the completed middle and lower reinforced concrete structure 4 is moistened with water, and the concrete poured in this step is micro-expansion fine stone concrete. And before the concrete pouring construction, it is necessary to use drilling equipment to drill vent holes and vibrating holes on the embedded part 1, and the number of the vent holes and vibrating holes is one or more.
[0070] Step 8. Subsequent construction treatment: Use cutting equipment to cut the installation screw 2 and upper nut of the upper embedded part 1 together, and the whole construction process will end.
[0071] In the actual construction process, before the forming construction of the upper reinforced concrete structure in step 7 and the subsequent construction processing in step 8, the space positioning detection device needs to be used to detect the actual installation position of the embedded part 1, and The corresponding position correction measures are adopted according to the detection results.
[0072] To sum up, before the formwork is carried out in step 701, the elevation of the embedded part 1 needs to be inspected (this is the third inspection of the elevation of the embedded part), and then the upper concrete surface of the middle and lower reinforced concrete structure 4 needs to be checked twice. After cleaning, the second formwork construction, that is, the formwork construction described in step 701, is carried out to realize the purpose of pouring the foundation platform to be constructed for the second time. After the formwork process described in step 701 is completed and passed the inspection, the upper concrete surface of the middle and lower reinforced concrete structure 4 is moistened with water, and the micro-expansion fine stone concrete with a higher strength than the original design is used for pouring, and timely maintenance to eliminate Dry shrinkage of concrete. At the same time, the concrete pouring process. In order to prevent the concrete under the embedded part 1 from being vibrated and not compact, the embedded part 1 should be drilled before the embedded part is fixed; for the larger embedded part 1, the embedded part 1 must be drilled and vibrated The hole is convenient for inserting the vibrator to vibrate, but the position and size of the hole cannot affect the normal use of the embedded part 1.
[0073] In addition, in the subsequent construction process in step 8, after the embedded part installation screw 2 and the upper nut on the upper part of the embedded part 1 are cut off together, the connection between the embedded part 1 and the embedded part installation screw 2 Welding and fixing are carried out at the place, and the welding part between the embedded part 1 and the embedded part mounting screw 2 is smoothed and smoothed by a grinding equipment. In this embodiment, the cutting equipment is a grinding wheel cutter and the polishing equipment is an angle grinder.
[0074] In the actual construction process, after the template supported in step 701 is removed and cleaned, the elevation of the embedded part 1 is checked (this is the fourth inspection of the elevation of the embedded part), and then the embedded part is removed with a grinding wheel cutting machine 1. After the upper embedded part mounting screw 2 and nut 3 are cut off, the embedded part 1 and the embedded part mounting screw 2 are fully welded, and then the welding part is smoothed with an angle grinder.
[0075] The above are only the preferred embodiments of the present invention and do not limit the present invention. Any simple modification, alteration and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still belong to the technology of the present invention. Within the protection scope of the program.
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PUM

PropertyMeasurementUnit
Length300.0 ~ 350.0mm
Length100.0 ~ 120.0mm
Diameter>= 10.0mm
tensileMPa
Particle sizePa
strength10

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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