CN115012440A - Foundation construction method for pier-type installation for weighing apparatus calibration - Google Patents
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- 238000005303 weighing Methods 0.000 title claims abstract description 86
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 238000009434 installation Methods 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 230000002787 reinforcement Effects 0.000 claims abstract description 40
- 238000003466 welding Methods 0.000 claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000012795 verification Methods 0.000 claims abstract description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 50
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 10
- 238000002513 implantation Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
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Abstract
A foundation construction method for pier-type installation for scale verification, comprising: excavating a foundation pit at positions to be reconstructed on two side edges of the concrete foundation of the weighing apparatus to be measured, and arranging and implanting a certain number of transverse steel bars parallel to the table top of the weighing apparatus into the foundation pit towards the side edges of the concrete foundation; manufacturing an embedded plate assembly, implanting a longitudinal reinforcement cage in each foundation pit, wherein the position and the number of the reinforcements correspond to the position and the number of reinforcement holes of the embedded plate, welding and fixing the bottom of the embedded plate assembly with the previously implanted transverse reinforcements, installing the embedded plate assembly welded with the reinforcements above the longitudinal reinforcement cage, performing concrete pouring construction, finely adjusting the level of the embedded plate, and leveling the surface of the embedded plate. When the foundation is built, the performance of the weighing apparatus is not influenced, the original foundation main body structure of the weighing apparatus is not required to be dismantled or destroyed, the construction difficulty is reduced, the engineering quantity is obviously reduced, and the engineering quantity investment is saved.
Description
Technical Field
The invention belongs to the technical field of weighing apparatus verification, and particularly relates to a foundation construction method for pier-type installation of weighing apparatus verification.
Background
The weighing apparatus is one of the most mature weighing and metering apparatuses in the world at present, belongs to a metering apparatus with large measurement range, is widely applied to the metering of various load-carrying vehicles and goods in metallurgy, chemical engineering, railways, ports and industrial and mining enterprises, is used for the process control of weighing processes in trade settlement and production processes, and is ideal metering equipment for improving the modernization level of weighing and metering in enterprises. The weighing apparatus must be verified before actually putting into use to determine the accuracy grade, and in addition, after the weighing apparatus is used for a period of time or after the apparatus is replaced, the weighing apparatus must be verified again to confirm the accuracy grade so as to make corresponding adjustment to meet the accuracy requirement.
The invention patent 201110447098.1 in China discloses a 'verification structure of a large weighing apparatus', which can also be called a high-precision weighing apparatus load measuring instrument. In order to satisfy the quantity value tracing of the measuring instrument and ensure the accuracy and reliability of the measuring performance of the measuring instrument, the chinese patent invention 201410287557.8 discloses an automatic value-fixing system of a high-precision weighing instrument load measuring instrument, which belongs to a weighing instrument load measuring instrument with higher precision.
When the weighing instrument load measuring instrument is applied to weighing instrument inspection on a road, the foundation of the weighing instrument needs to be modified and built, and no document discloses how to modify and build the foundation.
The weighing apparatus is suitable for various weighing apparatus, not limited to the existing common electronic truck scale and dynamic truck scale, but also can be plane scale, rail scale, hopper scale, weighing bucket, etc.
Disclosure of Invention
The invention aims to provide a foundation construction method for pier-type installation of a weighing apparatus calibration, which does not need to punch holes on a table top of the measured weighing apparatus and does not damage the measured weighing apparatus.
The invention is realized by the following steps:
a foundation construction method for pier-type installation of weighing apparatus verification comprises the following steps:
step 1: excavating foundation pits at positions needing to be modified on two side edges of the concrete foundation of the measured weighing apparatus, wherein the length and the width are not less than 1m x 1m, and the depth is not less than 600mm from the bottom surface of the sensor installation of the measured weighing apparatus downwards;
step 2: arranging and implanting a certain number of transverse steel bars which have enough rigidity and strength and are parallel to the table top of the weighing apparatus into the side edge of the concrete foundation in the foundation pit;
and step 3: manufacturing a pre-buried plate assembly: each pre-embedded plate is provided with a plurality of reinforcing steel bar holes, pre-embedded plate reinforcing steel bars with the length not less than 400mm are welded at the positions of the reinforcing steel bar holes on each pre-embedded plate, the number of the pre-embedded plate reinforcing steel bars is equal to the number of the pre-embedded plate reinforcing steel bar holes, the pre-embedded plate reinforcing steel bars are required to be fully welded at the connecting positions of the pre-embedded plate reinforcing steel bar holes, the upper surface of each pre-embedded plate is polished to be flat and not higher than the upper surface of each pre-embedded plate, and a pre-embedded plate assembly is formed;
and 4, step 4: implanting a longitudinal reinforcement cage in each foundation pit, wherein the positions and the number of the reinforcements correspond to the positions and the number of the reinforcement holes of the embedded plate, the length is that the height from the table top of the weighing machine to the bottom of the foundation pit is reduced by 100mm, the bottom of the foundation pit is welded and fixed with the previously implanted transverse reinforcements, and the top of the foundation pit is not more than 50mm below the height of the table top of the weighing machine; each 150 mm-200 mm is reinforced by a stirrup;
and 5: installing the embedded plate assembly welded with the reinforcing steel bars above the longitudinal reinforcing steel bar cage, adjusting the height to be equal to the table top of the weighing apparatus, adjusting the horizontal and longitudinal levels, and performing lap welding on the reinforcing steel bars of the embedded plate assembly and the longitudinal reinforcing steel bar cage by adopting double-sided welding;
step 6: and (5) performing concrete pouring construction, finely adjusting the level of the embedded plate, and leveling the surface of the embedded plate.
Further, in the step 2, the transverse reinforcing steel bars implanted into the concrete foundation in the foundation pit are arranged in two rows, the row spacing is not less than 200mm, the total number of the transverse reinforcing steel bars is not less than 7, the implantation depth is 300mm, and the exposure length is 600 mm.
Further, in the step 5, when the steel bars of the embedded plate assembly and the longitudinal steel bar cage are in lap joint welding, the lap joint length is not less than 6D, and D is the outer diameter of the steel bars.
A foundation construction method for abutment installation for scale verification, comprising the steps of:
the method comprises the following steps: excavating foundation pits at positions needing to be modified on two side edges of the concrete foundation of the measured weighing apparatus, wherein the length and the width are not less than 1m x 1m, and the depth is not less than 600mm from the bottom surface of the sensor installation of the measured weighing apparatus downwards;
step two: arranging and implanting a certain number of transverse steel bars with sufficient rigidity and strength parallel to the table top of the weighing apparatus into the foundation pit, wherein the diameter of the transverse steel bars is not less than d which is 16 mm;
step three: manufacturing a pre-buried assembly: the main body of the embedded component is I-shaped steel, and a cantilever beam installation slot and a plug pin hole are prefabricated on the embedded component; welding longitudinal steel bars with the length not less than d being 16mm at the positions of wing plates and web plates of the I-shaped steel, wherein the number of the longitudinal steel bars is not less than 6, double-sided welding is adopted, the welding length is not less than 10d, and the length of the steel bars is not less than 400mm, so that an embedded assembly is formed;
step four: implanting a longitudinal reinforcement cage in each foundation pit, wherein the positions and the number of the reinforcements correspond to the positions and the number of reinforcement holes of the embedded parts, the diameter of the longitudinal reinforcement cage is not less than 16mm, the length of the longitudinal reinforcement cage is the height from the table top of the weighing machine to the bottom of the foundation pit minus 100mm, the bottom of the longitudinal reinforcement cage is welded and fixed with the previously implanted transverse reinforcements, and the top of the longitudinal reinforcement cage is not more than 50mm below the table top of the weighing machine; the stirrup is used for reinforcing every 150-200 mm;
step five: installing the embedded assembly welded with the steel bars above the longitudinal steel bar cage, positioning and adjusting the height by adopting a cantilever beam tool, adjusting the horizontal and longitudinal levels, and performing lap welding on the steel bars of the embedded assembly and the longitudinal steel bar cage by adopting double-sided welding, wherein the welding length is not less than 10 d;
step six: manufacturing a concrete pier reinforcing cage by using longitudinal reinforcing steel bars with the length equal to the length from the top of the embedded part to the bottom of the foundation pit, and fixing the concrete pier reinforcing cage by using stirrups with the d equal to 8 mm; and (3) manufacturing a 500 mm-500 mm column by using a template, and performing concrete pouring construction.
Furthermore, in the second step, two rows of transverse reinforcing steel bars are implanted into the concrete foundation in the foundation pit, the row spacing is not less than 200mm, the total number of the transverse reinforcing steel bars is not less than 7, the implantation depth is 300mm, and the exposure length is 600 mm.
Furthermore, in the third step, the longitudinal steel bars welded at the wing plate and the web plate of the I-shaped steel adopt double-sided welding, and the welding length is not less than 10 d.
The invention has the advantages that: when the foundation is built, the performance of the weighing apparatus is not influenced, the original foundation main body structure of the weighing apparatus is not required to be dismantled or destroyed, the construction difficulty is reduced, the engineering quantity is obviously reduced, and the engineering quantity investment is saved. In addition, each abutment arranged above the foundation built by the method is independent and adult, only by means of the position of part of the original foundation but not limited by the arrangement of the steel bars in the original foundation, the abutment has the advantages of strong bearing capacity, long service life, simple and convenient maintenance, low construction cost and short construction period, and because the abutments have various forms such as fixed type, movable type and the like, the requirements of some special occasions on site operation are greatly met, and the method is particularly suitable for the space with limited application sites of weighing apparatus.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a movable pier-type load-bearing foundation according to a first embodiment of the invention.
Fig. 2 is a schematic structural view of an embedment plate in the first embodiment of the invention.
Fig. 3 is a schematic structural diagram of the embedded plate and the reinforcement cage after being assembled in the first embodiment of the invention.
Fig. 4 is a schematic structural view of a fixed pier type load-bearing foundation according to a second embodiment of the invention.
Fig. 5 is a top view of a fixed abutment of a second embodiment of the invention.
Detailed Description
The first embodiment:
as shown in fig. 1 to 3, a foundation construction method for pier type installation of weighing apparatus calibration comprises the steps of firstly constructing a bearing foundation under the ground beside a sensor of a measured weighing apparatus 1, and arranging an embedded plate 2 on the bearing foundation at a position flush with a table top of the measured weighing apparatus 1; when the measured weighing apparatus 1 needs to be calibrated, abutments 3 with the number consistent with that of the sensors of the measured weighing apparatus 1 are installed on the embedded plate 2, the rear end of the cantilever beam frame 4 is installed on one side of the abutments 3, and the weighing apparatus load measuring instruments 5 are installed below the front end of the cantilever beam frame 4. The construction method for building the foundation comprises the following steps:
step 1: excavating foundation pits at positions needing to be modified on two sides of a concrete foundation of the measured weighing apparatus 1, wherein the length and the width are not less than 1m x 1m, and the depth is not less than 600mm from the bottom surface of a sensor installation 11 of the measured weighing apparatus 1;
step 2: arranging and implanting a certain number of transverse steel bars 6 which have enough rigidity and strength and are parallel to the table top of the weighing apparatus into the side edge of the concrete foundation in the foundation pit; the transverse reinforcing steel bars implanted into the concrete foundation in the foundation pit are arranged in two rows, the row spacing is not less than 200mm, the total number of the transverse reinforcing steel bars is not less than 7, generally, the number of the transverse reinforcing steel bars in the first row is 5, the number of the transverse reinforcing steel bars in the second row is two, the implantation depth is 300mm, and the exposure length is 600 mm;
and step 3: manufacturing a pre-buried plate assembly: each pre-embedded plate 2 is provided with a plurality of reinforcing steel bar holes 21, pre-embedded plate reinforcing steel bars with the length not less than 400mm are welded at the positions of the reinforcing steel bar holes on each pre-embedded plate, the number of the pre-embedded plate reinforcing steel bars is equal to the number of the pre-embedded plate reinforcing steel bar holes, the pre-embedded plate reinforcing steel bars are required to be fully welded at the connecting positions of the pre-embedded plate reinforcing steel bar holes, the upper surface of the pre-embedded plate reinforcing steel bars is polished to be flat and not higher than the upper surface of the pre-embedded plate reinforcing steel bars, and a pre-embedded plate assembly is formed;
and 4, step 4: implanting a longitudinal steel bar cage 7 in each foundation pit, wherein the position and the number of longitudinal steel bars correspond to the position and the number of the steel bar holes 21 of the embedded plate 2, the length is the height from the platform surface of the truck scale to the bottom of the foundation pit is reduced by 100mm, the bottom of the truck scale is welded and fixed with the previously implanted transverse steel bars 6, and the top of the truck scale is not more than 50mm below the height of the platform surface of the weighing machine; the stirrup is used for reinforcing every 150-200 mm;
and 5: the embedded plate assembly welded with the steel bars is installed above the longitudinal steel bar cage 7, the height is adjusted to be equal to the surface of the measured weighing apparatus 1, the embedded plate assembly is adjusted to be horizontal and longitudinal horizontal, the steel bars of the embedded plate assembly and the longitudinal steel bar cage are in lap joint welding, double-face welding is adopted, the lap joint length is not less than 6D, and D is the outer diameter of the steel bars.
Step 6: and (5) performing concrete pouring construction, finely adjusting the level of the embedded plate, and leveling the surface of the embedded plate.
When the weighing apparatus load measuring instrument 5 is required to detect the weighing apparatus 1 which is constructed through the foundation, the pier type reaction force device is installed, and the specific operation steps are as follows:
using a tool to take down the bolt or the plug used for protecting the threaded hole on the embedded plate 2;
placing the abutment 3 on the embedded plate 2, and aligning the through hole of the bottom plate of the abutment 3 with the threaded hole of the embedded plate 2 respectively; the distribution position of each abutment 3 in the longitudinal direction of the weighing apparatus table top is 1-2 meters away from the corresponding sensor of the measured weighing apparatus;
fully locking the pier 3 and the surface of the embedded plate 2 by using bolts;
the rear end of the cantilever beam frame 4 is placed in a slot at one side of the abutment 3, and a square bolt is inserted above the slot;
lifting the front end of the cantilever beam frame 4 to enable the side face of the cantilever beam frame to be completely attached to the side face of the abutment 3, and screwing a fastening bolt below the slot to completely push the cantilever beam frame;
and a bottom plate and a standard load unit of the weighing machine load measuring instrument 5 are arranged on the table top of the measured weighing machine 1 below the front end of the cantilever beam frame 4.
It should be noted that: each abutment is suggested to be designed to bear 25 t; the strength grade of the poured concrete is recommended to be more than C30, a corresponding anti-freezing formula is adopted in a severe cold area, and the concrete is prepared in a corresponding anti-corrosion formula in a corrosive environment. During pouring, please protect each screw hole; the embedded plate 2 is connected with a reinforcement cage 7 below the embedded plate in a welding mode, and the embedded plate 2 is prevented from excessively deforming during welding; the steel bar selection type, the number and the arrangement of the steel bars are designed according to the bearing condition of the abutment by a weighing apparatus enterprise; the pre-buried plate 2 is preferably made of Q345r steel plate with the thickness of 30 mm. The embedded plate 2 is provided with nine M24 threaded holes 22 (the distribution positions are shown in figure 2), and is connected with the steel structure abutment 3 arranged on the embedded plate through screws during verification.
The abutment 3 of this embodiment can be dismantled, when need not examine, removes abutment 3, and the weighing apparatus resumes to use.
Second embodiment:
as shown in fig. 4 to 5, a foundation construction method for abutment type installation for scale certification includes the steps of:
the method comprises the following steps: excavating foundation pits at positions needing to be modified on two sides of a concrete foundation of the measured weighing apparatus 1, wherein the length and the width are not less than 1m x 1m, and the depth is not less than 600mm from the bottom surface of a sensor 11 of the measured weighing apparatus 1;
step two: arranging and implanting a certain number of transverse steel bars 6 which have enough rigidity and strength and are parallel to the table top of the weighing apparatus into the foundation pit, wherein the diameter of the transverse steel bars is not less than d which is 16 mm; the number of the transverse steel bars 6 implanted into the concrete foundation in the foundation pit is two, the row spacing is not less than 200mm, the total number of the transverse steel bars is not less than 7, generally, the number of the transverse steel bars in the first row is 5, the number of the transverse steel bars in the second row is two, the implantation depth is 300mm, and the exposure length is 600 mm;
step three: manufacturing a pre-buried assembly 8: the main body of the embedded assembly is I-shaped steel 9, and a cantilever beam installation slot and a bolt hole are prefabricated on the embedded assembly; welding longitudinal steel bars with the length not less than d being 16mm at the positions of wing plates and web plates of the I-shaped steel, wherein the number of the longitudinal steel bars is not less than 6, double-sided welding is adopted, the welding length is not less than 10d, and the length of the steel bars is not less than 400mm, so that an embedded assembly is formed;
step four: implanting a longitudinal reinforcement cage 7 into each foundation pit, wherein the positions and the number of the reinforcements correspond to the positions and the number of reinforcement holes of the embedded parts, the diameter of the longitudinal reinforcement cage is not less than 16mm, the length of the longitudinal reinforcement cage is the height from the table top of the weighing machine to the bottom of the foundation pit minus 100mm, the bottom of the longitudinal reinforcement cage is welded and fixed with the previously implanted transverse reinforcements, and the top of the longitudinal reinforcement cage is not more than 50mm below the table top of the weighing machine; the stirrup is used for reinforcing every 150-200 mm;
step five: installing the embedded assembly 8 welded with the reinforcing steel bars above the longitudinal reinforcing steel bar cage 7, positioning and adjusting the height by adopting a cantilever beam tool, adjusting the horizontal and longitudinal levels, and performing lap welding on the reinforcing steel bars of the embedded assembly 8 and the longitudinal reinforcing steel bar cage 7 by adopting double-sided welding, wherein the welding length is not less than 10 d;
step six: manufacturing a concrete pier reinforcing cage by using longitudinal reinforcing steel bars with the length equal to the length from the top of the embedded assembly to the bottom of the foundation pit, and fixing the concrete pier reinforcing cage by using stirrups with the d equal to 8 mm; and (3) manufacturing a 500 mm-500 mm column by using a template, and performing concrete pouring construction.
The concrete abutment of this embodiment is fixed, undetachable, except that being adapted to some application occasions that the place is great, the passageway is spacious, is applicable to more and not needing to open the freight train to the special occasion on the weighing apparatus mesa, only weighs the condition that the motion trail of goods or car goods combination is more regular. The device can be applied to weighing scales of track scales and the like, and the occasion that the abutment can block the channel does not need to be considered.
When the foundation is built, the performance of the weighing apparatus is not influenced, the original foundation main body structure of the weighing apparatus is not required to be dismantled or destroyed, the construction difficulty is reduced, the engineering quantity is obviously reduced, and the engineering quantity investment is saved. In addition, each abutment arranged above the foundation built by the method is independent and adult, only by means of the position of part of the original foundation but not limited by the arrangement of the steel bars in the original foundation, the abutment has the advantages of strong bearing capacity, long service life, simple and convenient maintenance, low construction cost and short construction period, and because the abutments have various forms such as fixed type, movable type and the like, the requirements of some special occasions on site operation are greatly met, and the method is particularly suitable for the space with limited application sites of weighing apparatus.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A foundation construction method for pier type installation of weighing apparatus verification is characterized in that: the method comprises the following steps:
step 1: excavating foundation pits at positions needing to be modified on two side edges of the concrete foundation of the measured weighing apparatus, wherein the length and the width are not less than 1m x 1m, and the depth is not less than 600mm from the bottom surface of the sensor installation of the measured weighing apparatus downwards;
step 2: arranging and implanting a certain number of transverse steel bars which have enough rigidity and strength and are parallel to the table top of the weighing apparatus into the side edge of the concrete foundation in the foundation pit;
and step 3: manufacturing a pre-buried plate assembly: each pre-embedded plate is provided with a plurality of reinforcing steel bar holes, pre-embedded plate reinforcing steel bars with the length not less than 400mm are welded at the positions of the reinforcing steel bar holes on each pre-embedded plate, the number of the pre-embedded plate reinforcing steel bars is equal to the number of the pre-embedded plate reinforcing steel bar holes, the pre-embedded plate reinforcing steel bars are required to be fully welded at the connecting positions of the pre-embedded plate reinforcing steel bar holes, the upper surface of each pre-embedded plate is polished to be flat and not higher than the upper surface of each pre-embedded plate, and a pre-embedded plate assembly is formed;
and 4, step 4: implanting a longitudinal reinforcement cage in each foundation pit, wherein the positions and the number of the reinforcements correspond to the positions and the number of the reinforcement holes of the embedded plate, the length is that the height from the table top of the weighing machine to the bottom of the foundation pit is reduced by 100mm, the bottom of the foundation pit is welded and fixed with the previously implanted transverse reinforcements, and the top of the foundation pit is not more than 50mm below the height of the table top of the weighing machine; the stirrup is used for reinforcing every 150-200 mm;
and 5: installing the embedded plate assembly welded with the reinforcing steel bars above the longitudinal reinforcing cage, adjusting the height of the embedded plate assembly to be equal to the table surface of the weighing apparatus, adjusting the horizontal and longitudinal levels, and performing lap welding on the reinforcing steel bars of the embedded plate assembly and the longitudinal reinforcing cage by adopting double-sided welding;
step 6: and (5) performing concrete pouring construction, finely adjusting the level of the embedded plate, and leveling the surface of the embedded plate.
2. A foundation construction method for abutment installation of a balancer verification as claimed in claim 1, wherein: in the step 2, two rows of transverse reinforcing steel bars are implanted into the concrete foundation in the foundation pit, the row spacing is not less than 200mm, the total number of the transverse reinforcing steel bars is not less than 7, the implantation depth is 300mm, and the exposure length is 600 mm.
3. The foundation construction method for abutment installation for the verification of weighing apparatus according to claim 1, wherein: in the step 5, when the steel bars of the embedded plate assembly and the longitudinal steel bar cage are in lap joint welding, the lap joint length is not less than 6D, and D is the outer diameter of the steel bars.
4. A foundation construction method for pier-type installation of weighing apparatus calibration is characterized in that: the method comprises the following steps:
the method comprises the following steps: excavating foundation pits at positions needing to be modified on two side edges of the concrete foundation of the measured weighing apparatus, wherein the length and the width are not less than 1m x 1m, and the depth is not less than 600mm from the bottom surface of the sensor installation of the measured weighing apparatus downwards;
step two: arranging and implanting a certain number of transverse steel bars with sufficient rigidity and strength parallel to the table top of the weighing apparatus into the foundation pit, wherein the diameter of the transverse steel bars is not less than d which is 16 mm;
step three: manufacturing a pre-buried assembly: the main body of the embedded component is I-shaped steel, and a cantilever beam installation slot and a plug pin hole are prefabricated on the embedded component; welding longitudinal steel bars with the length not less than d being 16mm at the positions of wing plates and web plates of the I-shaped steel, wherein the number of the longitudinal steel bars is not less than 6, double-sided welding is adopted, the welding length is not less than 10d, and the length of the steel bars is not less than 400mm, so that an embedded assembly is formed;
step four: implanting a longitudinal reinforcement cage in each foundation pit, wherein the positions and the number of the reinforcements correspond to the positions and the number of reinforcement holes of the embedded parts, the diameter of the longitudinal reinforcement cage is not less than 16mm, the length of the longitudinal reinforcement cage is the height from the table top of the weighing machine to the bottom of the foundation pit minus 100mm, the bottom of the longitudinal reinforcement cage is welded and fixed with the previously implanted transverse reinforcements, and the top of the longitudinal reinforcement cage is not more than 50mm below the table top of the weighing machine; the stirrup is used for reinforcing every 150-200 mm;
step five: installing the embedded assembly welded with the reinforcing steel bars above a longitudinal reinforcing cage, positioning and adjusting the height by adopting a cantilever beam tool, adjusting the transverse and longitudinal levels, and performing lap welding on the reinforcing steel bars of the embedded assembly and the longitudinal reinforcing cage by adopting double-sided welding, wherein the welding length is not less than 10 d;
step six: manufacturing a concrete pier reinforcing cage by using longitudinal reinforcing steel bars with the length equal to the length from the top of the embedded part to the bottom of the foundation pit, and fixing the concrete pier reinforcing cage by using stirrups with the d equal to 8 mm; and (3) manufacturing a 500 mm-500 mm column by using a template, and performing concrete pouring construction.
5. The foundation construction method for abutment installation for balancer verification as claimed in claim 4, wherein: and in the second step, two rows of transverse reinforcing steel bars are implanted into the concrete foundation in the foundation pit, the row spacing is not less than 200mm, the total number of the transverse reinforcing steel bars is not less than 7, the implantation depth is 300mm, and the exposure length is 600 mm.
6. The foundation construction method for abutment installation for balancer verification as claimed in claim 4, wherein: and in the third step, the longitudinal steel bars welded at the wing plate and the web plate of the I-shaped steel adopt double-sided welding, and the welding length is not less than 10 d.
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谢杰 等: "采用衡器载荷测量仪法检定对电子汽车衡基础要求", 衡器, vol. 47, no. 4, pages 15 - 18 * |
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