CN111579039A - Anti-settling seamless construction method for flat plate type dynamic weighing equipment - Google Patents
Anti-settling seamless construction method for flat plate type dynamic weighing equipment Download PDFInfo
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- CN111579039A CN111579039A CN202010362282.5A CN202010362282A CN111579039A CN 111579039 A CN111579039 A CN 111579039A CN 202010362282 A CN202010362282 A CN 202010362282A CN 111579039 A CN111579039 A CN 111579039A
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- 238000005303 weighing Methods 0.000 title claims abstract description 80
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 203
- 239000010959 steel Substances 0.000 claims abstract description 203
- 210000001503 joint Anatomy 0.000 claims abstract description 29
- 239000002689 soil Substances 0.000 claims description 47
- 238000003466 welding Methods 0.000 claims description 24
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 2
- 230000008093 supporting effect Effects 0.000 abstract description 9
- 239000004566 building material Substances 0.000 abstract description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 238000003032 molecular docking Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
- G01G19/03—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C9/00—Special pavings; Pavings for special parts of roads or airfields
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/02—Arrangements of bearings
- G01G21/08—Bearing mountings or adjusting means therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/18—Link connections between the beam and the weigh pan
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Abstract
The invention discloses an anti-settling seamless construction method for flat plate type dynamic weighing equipment, which comprises the following steps: a. arranging a base groove; b. placing a flat plate type dynamic weighing device; c. installing a steel plate; d. installing a steel pipe; e. installing a base plate; f. installing a butt plate; g. the vertical steel bars and the horizontal steel bars are connected into a whole; h. forming a closed pouring space; i. forming a concrete roadbed. The invention can increase the supporting point of the concrete roadbed poured between the roadbed and the plate type dynamic weighing equipment, increase the bearing capacity of the concrete roadbed, avoid the occurrence of cracks and settlement of the concrete roadbed, pour the concrete in a closed pouring space to form the concrete roadbed, avoid the loss of the concrete, save the cost of building materials, and the top surfaces of the original roadbed, the poured concrete roadbed, the steel plate and the panel of the plate type dynamic weighing equipment are flush and are in seamless butt joint, thereby improving the integral flatness and construction quality and facilitating the running of vehicles.
Description
Technical Field
The invention belongs to the technical field of vehicle weighing, and particularly relates to an anti-settling seamless construction method for a flat plate type dynamic weighing device.
Background
In the field of public transportation, in order to manage vehicle overload, protect the safety of road bridges and reduce traffic accidents, the quality of motor vehicles needs to be monitored.
Therefore, another weighing sensor is disclosed in the prior art, which uses a piezoelectric crystal to make a piezoelectric quartz sensor, and uses the piezoelectric effect of the piezoelectric quartz itself to measure the mass of the motor vehicle. However, since the charge generated by the piezoelectric effect cannot be stored, when the sensor is used for measuring a static quantity, the amount of charge cannot be stably measured, and when the sensor is used for measuring a dynamic quantity, the sensor detects the instantaneous amount of charge. When the motor vehicle enters the speed measuring area, the running modes such as low speed, stagnation setting and the like are generally adopted, and the static measurement is approached, so the measurement effect is greatly reduced. In addition, the detection range of the piezoelectric quartz is small, auxiliary parameters such as speed and the like are needed to obtain weight data through calculation, and therefore, if the vehicle runs at abnormal speed, such as braking, stop and go, and cut-off speed running and the like, the measurement accuracy of the piezoelectric quartz is beyond the usable range.
In view of the above technical problems, chinese patent No. 2018.07.06 discloses a utility model named a flat plate type weighing device (patent No. cn201821075046.x), which includes: a base structure; the stress beams are arranged in parallel and are installed in the foundation structure, the stress beams can be deformed by the load of a motor vehicle, and the stress beams are provided with a plurality of strain gauge installation positions; the sensors are distributed in the same way with the installation positions, strain gauges are installed inside the sensors, and when the stress beam deforms, the sensors and the stress beam deform synchronously, so that the strain gauges deform and output signals corresponding to the deformation of the stress beam.
In the prior art, when the flat plate type weighing device is constructed, a foundation trench is excavated at a roadbed, the flat plate type weighing device is placed in the foundation trench, then concrete is poured in the foundation trench between the flat plate type weighing device and the roadbed, but the poured concrete has insufficient bearing capacity and is easy to settle.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides an anti-settling seamless construction method for a flat plate type dynamic weighing device, which can increase the supporting points of a concrete roadbed poured between a roadbed and the flat plate type dynamic weighing device, increase the bearing capacity of the concrete roadbed, avoid the occurrence of cracks and settlement phenomena of the concrete roadbed, pour concrete in a closed pouring space to form the concrete roadbed, avoid the loss of the concrete, save the cost of building materials, flush the top surfaces of the original roadbed, the poured concrete roadbed, a steel plate and a panel of the flat plate type dynamic weighing device, and realize seamless butt joint, improve the integral flatness and construction quality, and facilitate the running of vehicles.
In order to solve the technical problems, the invention adopts the following technical scheme:
the anti-settling seamless construction method of the flat plate type dynamic weighing equipment is characterized by comprising the following steps:
a. and measuring and paying off the roadbed according to a construction drawing, forming a foundation trench at the roadbed measurement position, wherein the excavation depth of the foundation trench is based on that the top surface of a panel of the flat plate type dynamic weighing equipment is flush with the top surface of the roadbed when the flat plate type dynamic weighing equipment is placed in the foundation trench.
b. And placing the installed flat dynamic weighing equipment at the designed position of the foundation trench, and generally adopting a crane to hoist, wherein the top surface of a panel of the flat dynamic weighing equipment is flush with the top surface of the roadbed.
c. The steel plate is installed on the inner side of the foundation trench, the top surface of the steel plate is flush with the top surface of the roadbed, and the two adjacent steel plates are fixed in a welding mode, so that the steel plates are connected into a whole, the steel plates are arranged, one side of the foundation trench is made to be of a rigid structure, and later-stage steel plate and backing plate welding operation is facilitated.
d. Installing a steel pipe:
(1) selecting a steel pipe with a design specification, drilling a first through hole in the steel pipe, wherein the first through hole is used for penetrating a horizontal reinforcing steel bar in the later period, then placing the steel pipe in a foundation trench, and adjusting the position of the steel pipe to ensure that the distance between two adjacent steel pipes is the same, and the top surface of the steel pipe is lower than that of a panel of the flat-plate dynamic weighing equipment.
(2) And filling a soil layer in the foundation trench, compacting the soil layer, arranging the soil layer in an area between the flat plate type dynamic weighing equipment and the steel plate, arranging the steel pipe in the soil layer, and enabling the top surface filled with the soil layer to be positioned below the first through hole.
The steel pipe and the concrete poured in the later period form a supporting system, the strength of the concrete roadbed poured in the later period is improved, and when the concrete roadbed is poured in the later period, the phenomenon that the steel pipe is locally deformed can be avoided or delayed, the performance of the supporting system of the steel pipe and the concrete is fully exerted, the bearing capacity of the concrete roadbed is improved, and the phenomena that the concrete roadbed cracks and subsides can be avoided.
e. Installing a base plate:
(1) and processing according to a design drawing to obtain the L-shaped base plate.
(2) And according to the size of the steel pipe, a set position of the base plate is provided with a mounting hole, the mounting hole is used for mounting the steel pipe, and a set position of the base plate is drilled with a second through hole, and the second through hole is used for penetrating through the vertical steel bar in the later period.
(3) The mounting hole with the backing plate sets up on the steel pipe to place the backing plate on the soil horizon, two adjacent backing plates splice each other this moment, and the inside portion of backing plate is hugged closely on the side of steel sheet, then welded fastening between two adjacent backing plates, welded fastening between the side with the inside portion of backing plate and steel sheet simultaneously, the distance is the butt joint plate thickness of later stage installation between the top surface of the outside portion of backing plate and the bottom surface of the panel of flat dynamic weighing equipment this moment.
Because concreting easily runs off on the soil horizon that fills in the foundation ditch, consequently set up rigid material's backing plate on the soil horizon, the later stage of being convenient for sets up the butt joint board between the top surface of the outside portion of backing plate and the bottom surface of the panel of flat dynamic weighing equipment, can form the space of pouring that is used for concreting, backing plate and steel sheet welded fastening moreover, the stability of multiplicable steel pipe avoids when filling in the concrete in the steel pipe, the phenomenon appears toppling over to the steel pipe.
f. Installing a butt plate:
(1) selecting a butt joint plate with a design specification, and then forming a notch on the butt joint plate.
(2) The butt-joint plate is clamped between the top surface of the outer side part of the base plate and the bottom surface of the panel of the flat dynamic weighing device, and the inner side of the notch extends out of the panel of the flat dynamic weighing device.
The butt joint plate can form a pouring space for pouring concrete, and the butt joint plate can support the part of the concrete roadbed, which is positioned at the panel of the flat plate type dynamic weighing equipment, so that the concrete roadbed and the panel of the flat plate type dynamic weighing equipment are in seamless butt joint.
g. Connecting the vertical steel bars and the horizontal steel bars into a whole:
(1) and vertically inserting the vertical steel bar into the second through hole of the base plate, and inserting the bottom of the vertical steel bar into the soil layer.
(2) Horizontal reinforcing steel bars are inserted into the first through holes of the steel pipes in the horizontal direction, at the moment, the horizontal reinforcing steel bars and the vertical reinforcing steel bars are tightly attached to each other, and then the horizontal reinforcing steel bars and the vertical reinforcing steel bars are welded and fixed.
(3) And filling concrete into the steel pipe to form a concrete fixing column, wherein the top surface of the concrete fixing column is flush with the top surface of the steel pipe.
After vertical reinforcing bar and horizontal reinforcing bar connect into an entirety, firmly on the soil horizon with the steel pipe, when later stage pouring concrete in the space, effectively prevent that the steel pipe from appearing local deformation phenomenon, improve the area expansion of the concrete road bed of bearing capacity moreover, reducible steel pipe quantity simultaneously.
h. Insert the curb plate in the soil horizon, the butt plate is hugged closely to the curb plate, and the backing plate is hugged closely to the curb plate, and welded fastening is again between curb plate and the steel sheet, and welded fastening is simultaneously between the panel of curb plate and flat plate formula dynamic weighing equipment, forms a confined space of pouring.
i. And pouring concrete in the pouring space to form a concrete roadbed, wherein the top surface of the concrete roadbed is flush with the top surface of the panel of the plate type dynamic weighing equipment, and the top surface of the concrete is flush with the top surface of the steel plate.
Furthermore, in step c, before the steel plate is installed on the inner side of the foundation trench, a groove is formed in the roadbed, and then the inner wall of the groove is ground flat, so that the top surface of the installed steel plate is flush. And then welding a fixed rod at the bottom of the steel plate, determining the setting position of the steel plate in the groove according to the position of the fixed rod on the steel plate, determining the setting position of the fixed rod again, drilling a positioning hole which can be matched with the fixed rod at the setting position of the fixed rod, introducing the fixed rod into the positioning hole, laying the steel plate in the groove at the moment, and fixing the two adjacent steel plates in a welding mode to enable the steel plates to be limited on the roadbed.
Furthermore, in the step (1), the diameter of the first through hole drilled in the steel pipe is 1-2mm larger than that of the horizontal steel bar, so that the horizontal steel bar can be conveniently and quickly penetrated into the first through hole.
Further, in the step (2), before soil is filled into the foundation trench, soil is filled into the steel pipe, the top surface of the soil filled into the steel pipe is located below the first through hole, and then the soil inside the steel pipe is compacted, so that the stability of the steel pipe is improved, and the phenomenon that the steel pipe topples over when the soil is filled into the foundation trench is avoided.
Furthermore, in the step (2), the diameter of a second through hole drilled in the base plate is 1-2mm larger than that of the vertical steel bar, so that the vertical steel bar can be conveniently and quickly penetrated into the second through hole.
Further, in the step f, the specific operation of clamping the butt plate between the top surface of the outer side portion of the base plate and the bottom surface of the panel of the plate type dynamic weighing device is as follows: firstly welding two symmetrically arranged angle steels on the side surface of a butt plate, welding a sliding block on the side surface of each angle steel, symmetrically arranging the two sliding blocks, sliding a guide rod between the two sliding blocks, then placing the guide rod and the butt plate which are connected into a whole on a base plate, then welding and fixing the end part of the guide rod and a steel plate, and then directionally moving the sliding blocks on the guide rod, so that the butt plate is clamped between the top surface of the outer side part of the base plate and the bottom surface of a panel of flat dynamic weighing equipment, the inner side of a notch extends out of the panel of the flat dynamic weighing equipment, and then welding and fixing the sliding blocks and the guide rod. The guide rod supports the butt-joint plate, the stress capacity of the butt-joint plate is increased, the slide block moves on the guide rod in a directional mode, the butt-joint plate moves in a directional mode, the butt-joint plate can be clamped into a designed position between the top face of the outer side portion of the base plate and the bottom face of the panel of the plate type dynamic weighing equipment, the butt-joint plate supporting effect is fully played, and the panel of the concrete pavement and the panel of the plate type dynamic weighing equipment are in seamless butt joint.
Furthermore, a reinforcing plate is welded between the sliding block and the angle steel, so that the connecting strength between the sliding block and the angle steel is increased.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the steel pipe and the poured concrete form a supporting system, the strength of the concrete roadbed poured in the later period is improved, the phenomenon of local deformation of the steel pipe can be avoided or delayed when the concrete roadbed is poured in the later period, the performance of the supporting system of the steel pipe and the concrete is fully exerted, the bearing capacity of the concrete roadbed is improved, and the phenomena of cracks and settlement of the concrete roadbed can be avoided.
2. Because concreting easily runs off on the soil horizon that fills in the foundation ditch, consequently set up rigid material's backing plate on the soil horizon, the later stage of being convenient for sets up the butt joint board between the top surface of the outside portion of backing plate and the bottom surface of the panel of flat dynamic weighing equipment, can form the space of pouring that is used for concreting, backing plate and steel sheet welded fastening moreover, the stability of multiplicable steel pipe avoids when filling in the concrete in the steel pipe, the phenomenon appears toppling over to the steel pipe.
3. The butt joint plate can support the part of the concrete roadbed, which is positioned at the panel of the flat plate type dynamic weighing equipment, so that the concrete roadbed and the panel of the flat plate type dynamic weighing equipment are in seamless butt joint.
4. After the vertical steel bars and the horizontal steel bars are connected into a whole, the steel pipes are firmly fixed on the soil layer, and when concrete is poured in the pouring space in the later period, the steel pipes are effectively prevented from being locally deformed, the area of the concrete roadbed with the bearing capacity improved is enlarged, and the number of the steel pipes can be reduced.
5. The steel plate, the base plate, the side plates and the butt plate form a closed pouring space, concrete can be quickly poured in the pouring space to form a concrete roadbed, the loss of the concrete is avoided, the cost of building materials is saved, and the curing time of the concrete is short.
After the construction of the invention, the top surfaces of the original roadbed, the poured concrete roadbed, the steel plate and the panel of the plate type dynamic weighing equipment are flush and are in seamless butt joint, thereby improving the integral flatness and construction quality and facilitating the running of vehicles.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of the present invention in a state where a steel plate is installed inside a foundation trench;
FIG. 2 is a schematic view of the present invention in a configuration for installing steel pipes;
FIG. 3 is a schematic structural view of a steel pipe according to the present invention;
FIG. 4 is a schematic view of the present invention in a configuration where the tie plate is installed;
FIG. 5 is a schematic view of the construction of the backing plate of the present invention;
FIG. 6 is a schematic view of the present invention in the configuration for mounting the docking plate;
FIG. 7 is a schematic view of the structure of the butt plate according to the present invention;
FIG. 8 is a schematic view of the present invention in a configuration in which vertical and horizontal reinforcing bars are integrally connected;
FIG. 9 is a schematic view showing a structure of coupling vertical and horizontal reinforcing bars according to the present invention;
FIG. 10 is a schematic view of the construction completed according to the present invention.
In the figure, 1-roadbed; 2-a base tank; 3-flat plate type dynamic weighing equipment; 4-a panel; 5-a steel plate; 6-steel pipe; 7-a soil layer; 8-a first via; 9-a backing plate; 10-mounting holes; 11-a second via; 12-a butt plate; 13-a slide block; 14-angle steel; 15-a reinforcing plate; 16-a guide bar; 17-notches; 18-vertical rebar; 19-horizontal rebar; 20-side plate; 21-concrete fixing column; 22-concrete roadbed.
Detailed Description
As shown in fig. 1 to 10, the anti-settling seamless construction method for the flat plate type dynamic weighing equipment of the invention comprises the following steps:
a. the construction method comprises the steps of measuring and paying off the roadbed 1 according to a construction drawing, forming a foundation trench 2 at the measuring position of the roadbed 1, leveling the inner side of the foundation trench 2, and leveling the top surface of a panel 4 of a flat plate type dynamic weighing device 3 and the top surface of the roadbed 1 when the flat plate type dynamic weighing device 3 is placed in the foundation trench 2 according to the excavation depth of the foundation trench 2.
b. The installed flat dynamic weighing equipment 3 is placed at the designed position of the foundation trench 2, and is generally hoisted by a crane, and the top surface of a panel 4 of the flat dynamic weighing equipment 3 is flush with the top surface of the roadbed 1.
c. At the inboard installation steel sheet 5 of foundation ditch 2, the top surface of steel sheet 5 and the top surface of road bed 1 flush, adopt welding mode fixed between two adjacent steel sheets 5 for steel sheet 5 connects into wholly, and steel sheet 5's setting makes one side of the foundation ditch 2 seted up rigid structure, the later stage steel sheet 5 and the backing plate welding operation of being convenient for.
The specific installation mode of the steel plate 5 can be designed as follows: before the steel plate 5 is installed on the inner side of the foundation trench 2, a groove is formed in the roadbed 1, and then the inner wall of the groove is ground flat, so that the top surface of the installed steel plate 5 is flush. Then weld the dead lever in the bottom of steel sheet 5, then according to the position of dead lever on steel sheet 5, determine the position that sets up of steel sheet 5 in the recess, confirm the position that sets up of dead lever again, then bore the locating hole of establishing ability and dead lever matching in the position that sets up of dead lever, let in the locating hole with the dead lever again, steel sheet 5 is laid in the recess this moment, then adopt welding mode fixed between two adjacent steel sheets 5 for steel sheet 5 is spacing on road bed 1.
d. Installing a steel pipe 6:
(1) the steel pipe 6 of selection design specification drills to steel pipe 6 again and establishes first through-hole 8, and this first through-hole 8 is used for the later stage to wear to establish horizontal reinforcing bar, and the diameter of the first through-hole 8 that steel pipe 6 bored establishes is greater than the diameter 1-2mm of horizontal reinforcing bar, is convenient for penetrate the horizontal reinforcing bar in the first through-hole 8 fast. Then, the steel pipes 6 are placed in the foundation trench 2, and the positions of the steel pipes 6 are adjusted so that the distance between two adjacent steel pipes 6 is the same, and the top surfaces of the steel pipes 6 are lower than the top surface of the panel 4 of the flat plate type dynamic weighing device 3.
(2) And filling a soil layer 7 into the foundation trench 2, compacting, arranging the soil layer 7 in the area between the flat plate type dynamic weighing equipment 3 and the steel plate 5, arranging the steel pipe 6 in the soil layer 7, and arranging the top surface filled with the soil layer 7 below the first through hole 8.
According to the invention, before the soil is filled in the foundation trench 2, the soil is filled in the steel tube 6, the top surface of the soil filled in the steel tube 6 is positioned below the first through hole 8, and then the soil in the steel tube 6 is compacted, so that the stability of the steel tube 6 is increased, and the phenomenon that the steel tube 6 topples over when the soil is filled in the foundation trench 2 is avoided.
The steel pipe 6 and the concrete poured in later period form a supporting system, so that the strength of the concrete roadbed 22 poured in later period is increased, and when the concrete roadbed 22 is poured in later period, the local deformation phenomenon of the steel pipe 6 can be avoided or delayed, the performance of the steel pipe 6 and the supporting system of the concrete can be fully exerted, the bearing capacity of the concrete roadbed 22 is improved, and the cracking and settlement phenomena of the concrete roadbed 22 can be avoided.
e. Installing the backing plate 9:
(1) and processing according to a design drawing to obtain the L-shaped backing plate 9.
(2) According to the size of the steel pipe 6, a set position of the backing plate 9 is provided with a mounting hole 10, the mounting hole 10 is used for mounting the steel pipe 6, a set position of the backing plate 9 is drilled with a second through hole 11, and the second through hole 11 is used for penetrating through a vertical steel bar in the later period. The diameter of the second through hole 11 drilled in the backing plate 9 is 1-2mm larger than that of the vertical steel bar, so that the vertical steel bar can be conveniently and quickly inserted into the second through hole 11.
(3) Set up the mounting hole 10 of backing plate 9 on steel pipe 6 to place backing plate 9 on soil horizon 7, two adjacent backing plates 9 splice each other this moment, the inside portion of backing plate 9 is hugged closely on the side of steel sheet 5, then welded fastening between two adjacent backing plates 9, welded fastening between the inside portion of backing plate 9 and the side of steel sheet 5 simultaneously, the distance is the thickness of the butt joint board of later stage installation between the top surface of the outside portion of backing plate 9 and the bottom surface of panel 4 of flat dynamic weighing equipment 3 this moment.
Because concreting easily runs off on the soil horizon 7 of filling in foundation trench 2, consequently set up rigid material's backing plate 9 on soil horizon 7, the later stage of being convenient for sets up the butt joint board between the top surface of the outside portion of backing plate 9 and the bottom surface of panel 4 of flat dynamic weighing equipment 3, can form the space of pouring that is used for concreting, backing plate 9 and steel sheet 5 welded fastening moreover, the stability of multiplicable steel pipe 6, when avoiding filling the concrete in steel pipe 6, the phenomenon appears toppling over in steel pipe 6.
f. Installing the butt plate 12:
(1) the butt plate 12 with the design specification is selected, and the butt plate 12 is provided with a notch 17.
(2) The abutment plate 12 is snapped between the top surface of the outer side of the backing plate 9 and the bottom surface of the face plate 4 of the flat dynamic weighing device 3, the inner side of the notch 17 protruding out of the face plate 4 of the flat dynamic weighing device 3.
The butt-joint plate 12 can form a pouring space for pouring concrete, and the butt-joint plate 12 can support the part of the concrete roadbed 22 at the panel 4 of the flat plate type dynamic weighing device 3, so that the concrete roadbed 22 is in seamless butt joint with the panel 4 of the flat plate type dynamic weighing device 3.
The specific operation of snapping the abutment plate 12 between the top face of the outer side of the tie plate 9 and the bottom face of the panel 4 of the dynamic weighing device 3 is: firstly welding two symmetrically arranged angle steels 14 on the side surface of a butt joint plate 12, then welding a sliding block 13 on the side surface of each angle steel 14, symmetrically arranging the two sliding blocks 13, then sliding a guide rod 16 between the two sliding blocks 13, then placing the guide rod 16 and the butt joint plate 12 which are connected into a whole on a backing plate 9, then welding and fixing the end part of the guide rod 16 and a steel plate 5, then moving the sliding blocks 13 on the guide rods 16 in an oriented mode, so that the butt joint plate 12 is clamped between the top surface of the outer side part of the backing plate 9 and the bottom surface of a panel 4 of a panel type dynamic weighing device 3, extending the inner side of a notch 17 out of the panel 4 of the panel type dynamic weighing device 3, and then welding and fixing the sliding blocks 13 and the guide. The guide rod 16 supports the butt joint plate 12, the stress capacity of the butt joint plate 12 is increased, the slide block 13 moves on the guide rod 16 in a directional mode, the butt joint plate 12 moves in a directional mode, the butt joint plate 12 can be clamped into a designed position between the top surface of the outer side portion of the base plate 9 and the bottom surface of the panel 4 of the plate type dynamic weighing device 3, the support effect of the butt joint plate 12 is fully exerted, and the concrete roadbed 22 is in seamless butt joint with the panel 4 of the plate type dynamic weighing device 3. A reinforcing plate 15 is welded between the sliding block 13 and the angle steel 14, and the connecting strength between the sliding block 13 and the angle steel 14 is increased.
g. Connecting the vertical bars 18 and the horizontal bars 19 into a whole:
(1) vertical reinforcing bars 18 are vertically inserted into the second through holes 11 of the backing plates 9, and the bottoms of the vertical reinforcing bars 18 are inserted into the soil layer 7.
(2) Horizontal steel bars 19 are inserted into the first through holes 8 of the steel pipes 6 in the horizontal direction, at the moment, the horizontal steel bars 19 and the vertical steel bars 18 are attached to each other, and then the horizontal steel bars 19 and the vertical steel bars 18 are welded and fixed.
(3) Concrete is filled in the steel pipe 6 to form a concrete fixing column 21, and the top surface of the concrete fixing column 21 is flush with the top surface of the steel pipe 6.
After the vertical steel bars 18 and the horizontal steel bars 19 are connected into a whole, the steel pipes 6 are firmly fixed on the soil layer 7, and when concrete is poured in a pouring space in the later period, the steel pipes 6 are effectively prevented from being locally deformed, the area of the concrete roadbed 22 with the improved bearing capacity is enlarged, and the number of the steel pipes 6 can be reduced.
h. A side plate 20 is inserted into the soil layer 7, the side plate 20 is tightly attached to the butt plate 12, the side plate 20 is tightly attached to the base plate 9, the side plate 20 and the steel plate 5 are fixedly welded, and meanwhile, the side plate 20 and the panel 4 of the plate type dynamic weighing equipment 3 are fixedly welded to form a closed pouring space.
i. And pouring concrete in the pouring space to form a concrete roadbed 22, wherein the top surface of the concrete roadbed 22 is flush with the top surface of the panel 4 of the plate type dynamic weighing equipment 3, and the top surface of the concrete is flush with the top surface of the steel plate 5.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.
Claims (7)
1. The anti-settling seamless construction method of the flat plate type dynamic weighing equipment is characterized by comprising the following steps:
a. measuring and paying off at the roadbed according to a construction drawing, and then opening a foundation trench at the roadbed measuring position;
b. placing the installed flat plate type dynamic weighing equipment at the design position of the foundation trench, wherein the top surface of a panel of the flat plate type dynamic weighing equipment is flush with the top surface of the roadbed;
c. installing steel plates on the inner side of the foundation trench, wherein the top surfaces of the steel plates are flush with the top surface of the roadbed, and two adjacent steel plates are fixed in a welding mode;
d. installing a steel pipe:
(1) selecting a steel pipe with a design specification, drilling a first through hole for penetrating a horizontal steel bar at the later stage on the steel pipe, placing the steel pipe in a foundation trench, and adjusting the position of the steel pipe to ensure that the distance between two adjacent steel pipes is the same, wherein the top surface of the steel pipe is lower than that of a panel of the flat plate type dynamic weighing equipment;
(2) filling a soil layer in the foundation trench, compacting the soil layer, arranging the soil layer in an area between the flat plate type dynamic weighing equipment and the steel plate, arranging the steel pipe in the soil layer, and enabling the top surface filled with the soil layer to be positioned below the first through hole;
e. installing a base plate:
(1) processing according to a design drawing to obtain an L-shaped base plate;
(2) according to the size of the steel pipe, a mounting hole is formed in a set position of the base plate and used for mounting the steel pipe, and a second through hole is drilled in the set position of the base plate and used for penetrating through a vertical steel bar in the later period;
(3) arranging mounting holes of the base plates on the steel pipe, placing the base plates on the soil layer, splicing two adjacent base plates at the moment, enabling the inner side parts of the base plates to be tightly attached to the side surfaces of the steel plate, then fixedly welding the two adjacent base plates, and simultaneously fixedly welding the inner side parts of the base plates and the side surfaces of the steel plate, wherein the distance between the top surfaces of the outer side parts of the base plates and the bottom surface of a panel of the dynamic plate weighing equipment is the thickness of a butt joint plate mounted at the later stage;
f. installing a butt plate:
(1) selecting a butt joint plate with a design specification, and then forming a notch on the butt joint plate;
(2) clamping the butt-joint plate between the top surface of the outer side part of the base plate and the bottom surface of the panel of the flat dynamic weighing equipment, wherein the inner side of the notch extends out of the panel of the flat dynamic weighing equipment;
g. connecting the vertical steel bars and the horizontal steel bars into a whole:
(1) vertically inserting a vertical steel bar into the second through hole of the base plate, and inserting the bottom of the vertical steel bar into the soil layer;
(2) inserting a horizontal steel bar into the first through hole of the steel pipe in the horizontal direction, enabling the horizontal steel bar and the vertical steel bar to be attached to each other, and then welding and fixing the horizontal steel bar and the vertical steel bar;
(3) filling concrete into the steel pipe to form a concrete fixing column, wherein the top surface of the concrete fixing column is flush with the top surface of the steel pipe;
h. inserting a side plate into the soil layer, wherein the side plate is tightly attached to the butt plate, the side plate is tightly attached to the base plate, then the side plate and the steel plate are welded and fixed, and meanwhile, the side plate and a panel of the plate type dynamic weighing equipment are welded and fixed to form a closed pouring space;
i. and pouring concrete in the pouring space to form a concrete roadbed, wherein the top surface of the concrete roadbed is flush with the top surface of the panel of the plate type dynamic weighing equipment, and the top surface of the concrete is flush with the top surface of the steel plate.
2. The anti-settling seamless construction method of the flat plate type dynamic weighing equipment according to claim 1, wherein in the step c, before the steel plates are installed on the inner side of the foundation trench, a groove is formed in the roadbed, the inner wall of the groove is ground to be flat, then the fixing rod is welded to the bottom of the steel plate, the setting position of the steel plate is determined in the groove according to the position of the fixing rod on the steel plate, then the setting position of the fixing rod is determined, then a positioning hole capable of being matched with the fixing rod is drilled in the setting position of the fixing rod, then the fixing rod is inserted into the positioning hole, at the moment, the steel plate is laid in the groove, and then the adjacent two steel plates are fixed in a welding mode.
3. The anti-settling seamless construction method of the flat plate type dynamic weighing equipment according to claim 1, wherein in the part (1) of the step d, the diameter of the first through hole drilled in the steel pipe is 1-2mm larger than that of the horizontal steel bar.
4. The anti-settling seamless construction method for the flat plate type dynamic weighing equipment according to claim 1, wherein in the step (2), before filling soil into the foundation trench, soil is filled into the steel tube, the top surface of the soil filled into the steel tube is positioned below the first through hole, and then the soil inside the steel tube is compacted.
5. The flat plate type dynamic weighing apparatus anti-settling seamless construction method according to claim 1, wherein in the (2) th part of the step e, the diameter of the second through hole drilled in the backing plate is 1-2mm larger than that of the vertical steel bar.
6. The anti-settling seamless construction method of the flat plate type dynamic weighing device according to claim 1, wherein the specific operation of clamping the butt plate between the top surface of the outer side portion of the backing plate and the bottom surface of the face plate of the flat plate type dynamic weighing device in the step f is: firstly welding two symmetrically arranged angle steels on the side surface of a butt plate, welding a sliding block on the side surface of each angle steel, symmetrically arranging the two sliding blocks, sliding a guide rod between the two sliding blocks, then placing the guide rod and the butt plate which are connected into a whole on a base plate, then welding and fixing the end part of the guide rod and a steel plate, and then directionally moving the sliding blocks on the guide rod, so that the butt plate is clamped between the top surface of the outer side part of the base plate and the bottom surface of a panel of flat dynamic weighing equipment, the inner side of a notch extends out of the panel of the flat dynamic weighing equipment, and then welding and fixing the sliding blocks and the guide rod.
7. The anti-settling seamless construction method of the flat plate type dynamic weighing equipment according to claim 6, wherein a reinforcing plate is welded between the slide block and the angle steel.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112197844A (en) * | 2020-09-22 | 2021-01-08 | 浙江东鼎电子股份有限公司 | Flat plate type dynamic weighing device hoisting and mounting method |
CN115162717A (en) * | 2022-07-27 | 2022-10-11 | 中国五冶集团有限公司 | Constructional column template system for synchronous construction of external wall constructional column and main body and construction method |
Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4592435A (en) * | 1984-12-11 | 1986-06-03 | Karpa Michael J | Monolithically cast concrete weighbridge |
JP2000314654A (en) * | 1999-05-06 | 2000-11-14 | Agune Giken:Kk | Device for measuring axle load of running automobile |
CN2498593Y (en) * | 2001-10-22 | 2002-07-03 | 苏广福 | Unitary concrete casted electronic scale |
CN201199176Y (en) * | 2008-01-09 | 2009-02-25 | 东莞市华兰海电子有限公司 | Dynamic weighing apparatus for high speed car |
KR20090047329A (en) * | 2007-11-07 | 2009-05-12 | 최재진 | Platform making method using concrete inside iron load |
DE202010011157U1 (en) * | 2010-08-07 | 2010-11-04 | Pfister Waagen Bilanciai Gmbh | Libra, whose balance bridge is passable by vehicles, which consists of steel as lost formwork and is filled in with concrete, which is placed on a concrete foundation |
CN202066579U (en) * | 2011-05-31 | 2011-12-07 | 杭州四方称重系统有限公司 | Dynamic weighing platform |
CN204788611U (en) * | 2015-06-16 | 2015-11-18 | 宁波柯力传感科技股份有限公司 | Integration highway gross rail load on axle sensor |
CN205443831U (en) * | 2016-04-06 | 2016-08-10 | 来建新 | Prevent subsiding highway subgrade |
US9470574B2 (en) * | 2014-02-10 | 2016-10-18 | Rinstrum Pty. Ltd | Slow speed weigh-in-motion system |
CN206556743U (en) * | 2016-12-30 | 2017-10-13 | 北京盘天新技术有限公司 | A kind of monoblock type weighting platform and its mounting structure |
CN207091852U (en) * | 2017-05-03 | 2018-03-13 | 孙娜 | A kind of Anti-settling device of highway subgrade |
CN207215274U (en) * | 2017-09-28 | 2018-04-10 | 大同新成新材料股份有限公司 | A kind of weighbridge protection device |
CN208415004U (en) * | 2018-06-15 | 2019-01-22 | 中铁西安勘察设计研究院有限责任公司 | A kind of pair of lacing wire material U-type groove reduces the railway bed structure of subgrade settlement deformation |
CN109338821A (en) * | 2018-11-06 | 2019-02-15 | 浙江理工大学 | A kind of railroad tie |
CN208780317U (en) * | 2018-07-06 | 2019-04-23 | 北京盘天新技术有限公司 | A kind of flat meausring apparatus |
CN109958017A (en) * | 2017-12-26 | 2019-07-02 | 北京万集科技股份有限公司 | A kind of pavement structure and its construction method with weighing sensor |
CN209197879U (en) * | 2018-12-31 | 2019-08-02 | 中储恒科物联网系统有限公司 | A kind of combined type dynamic weighing system |
CN209727239U (en) * | 2019-04-17 | 2019-12-03 | 杭州四方称重系统有限公司 | A kind of integrated axle weight scale of high speed dynamic of concrete structure |
CN110805059A (en) * | 2019-11-21 | 2020-02-18 | 陕西阳明交通科技有限公司 | Installation and construction process of highway weighing equipment |
CN210375367U (en) * | 2019-08-05 | 2020-04-21 | 成都深蓝安捷交通设备有限公司 | Weighing mechanism based on automatic weighing apparatus of dynamic road vehicle |
-
2020
- 2020-04-30 CN CN202010362282.5A patent/CN111579039B/en not_active Expired - Fee Related
Patent Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4592435A (en) * | 1984-12-11 | 1986-06-03 | Karpa Michael J | Monolithically cast concrete weighbridge |
JP2000314654A (en) * | 1999-05-06 | 2000-11-14 | Agune Giken:Kk | Device for measuring axle load of running automobile |
CN2498593Y (en) * | 2001-10-22 | 2002-07-03 | 苏广福 | Unitary concrete casted electronic scale |
KR20090047329A (en) * | 2007-11-07 | 2009-05-12 | 최재진 | Platform making method using concrete inside iron load |
CN201199176Y (en) * | 2008-01-09 | 2009-02-25 | 东莞市华兰海电子有限公司 | Dynamic weighing apparatus for high speed car |
DE202010011157U1 (en) * | 2010-08-07 | 2010-11-04 | Pfister Waagen Bilanciai Gmbh | Libra, whose balance bridge is passable by vehicles, which consists of steel as lost formwork and is filled in with concrete, which is placed on a concrete foundation |
CN202066579U (en) * | 2011-05-31 | 2011-12-07 | 杭州四方称重系统有限公司 | Dynamic weighing platform |
US9470574B2 (en) * | 2014-02-10 | 2016-10-18 | Rinstrum Pty. Ltd | Slow speed weigh-in-motion system |
CN204788611U (en) * | 2015-06-16 | 2015-11-18 | 宁波柯力传感科技股份有限公司 | Integration highway gross rail load on axle sensor |
CN205443831U (en) * | 2016-04-06 | 2016-08-10 | 来建新 | Prevent subsiding highway subgrade |
CN206556743U (en) * | 2016-12-30 | 2017-10-13 | 北京盘天新技术有限公司 | A kind of monoblock type weighting platform and its mounting structure |
CN207091852U (en) * | 2017-05-03 | 2018-03-13 | 孙娜 | A kind of Anti-settling device of highway subgrade |
CN207215274U (en) * | 2017-09-28 | 2018-04-10 | 大同新成新材料股份有限公司 | A kind of weighbridge protection device |
CN109958017A (en) * | 2017-12-26 | 2019-07-02 | 北京万集科技股份有限公司 | A kind of pavement structure and its construction method with weighing sensor |
CN208415004U (en) * | 2018-06-15 | 2019-01-22 | 中铁西安勘察设计研究院有限责任公司 | A kind of pair of lacing wire material U-type groove reduces the railway bed structure of subgrade settlement deformation |
CN208780317U (en) * | 2018-07-06 | 2019-04-23 | 北京盘天新技术有限公司 | A kind of flat meausring apparatus |
CN109338821A (en) * | 2018-11-06 | 2019-02-15 | 浙江理工大学 | A kind of railroad tie |
CN209197879U (en) * | 2018-12-31 | 2019-08-02 | 中储恒科物联网系统有限公司 | A kind of combined type dynamic weighing system |
CN209727239U (en) * | 2019-04-17 | 2019-12-03 | 杭州四方称重系统有限公司 | A kind of integrated axle weight scale of high speed dynamic of concrete structure |
CN210375367U (en) * | 2019-08-05 | 2020-04-21 | 成都深蓝安捷交通设备有限公司 | Weighing mechanism based on automatic weighing apparatus of dynamic road vehicle |
CN110805059A (en) * | 2019-11-21 | 2020-02-18 | 陕西阳明交通科技有限公司 | Installation and construction process of highway weighing equipment |
Non-Patent Citations (3)
Title |
---|
ENGEL R , BEYER K , BAADE H J .: "Design and realization of the high-precision weighing systems as the gravimetric references in PTB"s national water flow standard", 《INTERNATIONAL SCIENTIFIC COLLOQUIUM, ILMENAU UNIVERSITY OF TECHNOLOGY》 * |
周琪: "动态称重传感器埋设道路路面改造技术与质量控制研究", 《智能城市》 * |
谷建斌: "公路新型称重设备的技术特点与发展趋势", 《中国交通信息化》 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112197844A (en) * | 2020-09-22 | 2021-01-08 | 浙江东鼎电子股份有限公司 | Flat plate type dynamic weighing device hoisting and mounting method |
CN115162717A (en) * | 2022-07-27 | 2022-10-11 | 中国五冶集团有限公司 | Constructional column template system for synchronous construction of external wall constructional column and main body and construction method |
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