CN207636408U - A kind of external pressure load loading device for concrete box culvert - Google Patents
A kind of external pressure load loading device for concrete box culvert Download PDFInfo
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- CN207636408U CN207636408U CN201721420312.3U CN201721420312U CN207636408U CN 207636408 U CN207636408 U CN 207636408U CN 201721420312 U CN201721420312 U CN 201721420312U CN 207636408 U CN207636408 U CN 207636408U
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- box culvert
- loading
- column
- pedestal
- right column
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 description 12
- 238000005336 cracking Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 240000002853 Nelumbo nucifera Species 0.000 description 4
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 4
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 241001513282 Bursaria spinosa Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 208000012826 adjustment disease Diseases 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model discloses a kind of external pressure load loading device for concrete box culvert, including pedestal, rack, loading beam and telescoping mechanism, and rack includes left column, right column and reaction beam, and left column is parallel with right column to be vertically provided on pedestal.Reaction beam is arranged horizontally in the top of pedestal, and both ends are detachably connected with the top of left column and right column respectively.The loading beam is set to the underface of reaction beam, and between left column and right column.Medium position of the telescoping mechanism between loading beam and reaction beam.Two lower supporting beams for being used to support box culvert are provided on pedestal, two lower supporting beams are in one in front and one in back to be arranged in parallel.It is set there are two fastener inserts in the first from left right side in the upper surface of pedestal, the both ends of lower supporting beam are connected with two fastener inserts respectively.The structure design of the utility model is reasonable, and versatility is good, highly practical, is applicable in the box culvert of multiple size model numbers, and manufacturing cost is low, easy to operate, and measurement result is accurate, and work efficiency is high.
Description
Technical field
The utility model is related to building machinery technical fields, and in particular to a kind of external pressure load for concrete box culvert adds
It carries and sets.
Background technology
Concrete box culvert is typically used in the environment of complex and is chronically at the state by external force, therefore it is required that coagulation
Native box culvert has higher intensity, and the ability for bearing external applied load destruction is strong.Since the size of concrete box culvert is larger, it is difficult to measure
It resists external applied load to its destruction situation, and therefore, it is necessary to one kind capable of testing box culvert resistance external pressure load charger and survey
Amount method measures the cracking load value and breaking load value of concrete box culvert, to ensure that concrete box culvert has higher use
Safety and the ability for resisting external force destruction.
Utility model content
In view of the above shortcomings of the prior art, the utility model aim is to propose a kind of external pressure for concrete box culvert
Load loading device solves the problems, such as that the cracking load value of concrete box culvert and breaking load value are difficult to accurately measure.
In order to solve the above-mentioned technical problem, technical solution used by the utility model is：
A kind of external pressure load loading device for concrete box culvert, including pedestal, rack, loading beam and telescoping mechanism,
The rack includes left column, right column and reaction beam, and left column is parallel with right column to be vertically provided on pedestal.The counter-force
Beam is arranged horizontally in the top of pedestal, and both ends are connected with the top of left column and right column respectively.The loading beam is set to anti-
The underface of power beam, and between left column and right column.Middle position of the telescoping mechanism between loading beam and reaction beam
It sets.Two lower supporting beams for being used to support box culvert are provided on the pedestal, two lower supporting beams are in one in front and one in back to be arranged in parallel.
Preferably, it is set there are two fastener inserts in the first from left right side in the upper surface of pedestal, each fastener inserts include two
Two pre-buried beams of parallel longitudinal arrangement, lower supporting beam are detachably connected with pre-buried beam below.
Preferably, the top of the left column and right column is respectively equipped with the peace of an achievable counter-force depth of beam adjustment
The both ends of arrangement, reaction beam are detachably connected with the mounting assembly of left column and right column respectively by axis pin.Reaction beam
Top, arranged symmetrically there are two lifting lugs.
Preferably, the axis of the loading beam, it is parallel with the axis of the axis of reaction beam and two lower supporting beams.It is described
Matched first rubber mat plate is provided at the top of lower supporting beam, the bottom of loading beam is equipped with matched second
Rubber mat plate, the thickness of the first, second rubber mat plate >=25mm.
Preferably, the left column and right column are the frame structure of steel, and are installed with ladder respectively, two
Ladder is arranged in symmetrical mode.
Preferably, the main part of the reaction beam and loading beam is made of H profile steel.
The operation principle of external pressure load loading device for concrete box culvert：Include the following steps：Step 1, according to case
The width that the size of culvert is adjusted between counter-force depth of beam, two lower supporting beams adds by box culvert traverse in two lower supporting beams
Carrier beam is placed on the top of box culvert and the surface positioned at box culvert axis, while ensureing that two lower supporting beams are located at box culvert two
The underface of vertical side.Step 2 starts telescoping mechanism, and telescoping mechanism, which applies the top of box culvert by loading beam, to be carried
Lotus applies load by the way of stage loading, and loading speed is about 30kN/m per minute, and the practical crack for measuring box culvert carries
Charge values.Step 3 continues to apply load to the top of box culvert on the basis of step 2, applies load and also use stage loading
Mode measures the actual breaking load value of box culvert.
In step 2, the following several steps of measurement point of practical cracking load value：The first step, by zero loading to contraction load
The 80% of value carries out stage loading by the 20% of contraction payload values, and every grade of holding loading load lmin, whether there is or not split for observation
Seam, if there is crack, its width is measured with reading microscope and clearance gauge.Second step, continue by contraction payload values 10% into
Row stage loading, every grade of holding loading load lmin, after loading to contraction payload values, keeps contraction load 3min,
Fracture width is measured again.Third walks, and in the case where measuring fracture width less than 0.02mm, continues by contraction payload values
5% stage loading, every grade keeps loading load 3min to meet or exceed 0.02mm until fracture width.
In step 3, the following several steps of measurement point of actual breaking load value：The first step continues loading to providing failing load
80%, keep loading load lmin, observation whether there is or not destructions.Second step does not destroy such as, continues by regulation failing load value
10% continues stage loading, and every grade of holding loading load lmin keeps loading load after loading to regulation failing load value
3min is checked and is destroyed situation.Third walks, and does not destroy such as, continues 5% stage loading by regulation failing load value, every grade of holding
Loading load 3min, until destroying.
By using above-mentioned technical proposal, the advantageous effects of the utility model are：The utility model structure design is closed
Reason, versatility is good, highly practical, is applicable in the box culvert of multiple size model numbers, and manufacturing cost is low, easy to operate, and measurement result is accurate,
Work efficiency is high.
Description of the drawings
Fig. 1 is a kind of principle schematic diagram of external pressure load loading device for concrete box culvert of the utility model.
Specific implementation mode
The utility model is described in detail below in conjunction with the accompanying drawings：
In conjunction with Fig. 1, a kind of external pressure load loading device for concrete box culvert, including pedestal 1, rack 2, loading beam 3
And telescoping mechanism 4, pedestal 1 are made of concrete prefabricated, the rack 2 includes left column 21, right column 22 and reaction beam 23,
Left column 21 is parallel with right column 22 1 the first from left right side to be vertically provided on pedestal 1, and one is spaced between left column 21 and right column 22
The lower end of fixed distance, two columns is fixedly linked with pedestal 1.Set in the first from left right side that there are two pre- in the upper surface of pedestal 1
Embedded component 5, each fastener inserts 5 include two pre-buried beams of two parallel longitudinal arrangements, and two fastener inserts 5 are vertical with a left side respectively
Column 21 and right column 22 correspond.Specifically, the lower end of left column 21 and the middle part of the fastener inserts 5 positioned at left side are fixed and are welded
It connects, the middle part of the lower end of right column 22 and the fastener inserts 5 positioned at right side, which is fixed, welds.
The left column 21 and right column 22 are the steel framework structure of square column, left column 21 and right column 22
Front side is installed with ladder 6 respectively, and two symmetrical modes of ladder 6 are fixed on the top of pedestal 1, two ladders 6
Upper table of the lower end with pedestal 1 fix, the top of two ladders 6 is fixedly connected with left column 21 and right column 22 respectively.Institute
State the top that reaction beam 23 is arranged horizontally between left column 21 and right column 22 and is located at pedestal 1, the both ends point of reaction beam 23
Cha Ru not be in left column 21 and right column 22, and be detachably connected with the top of left column 21 and right column 22.
The top of the left column 21 and right column 22 is respectively equipped with the installation that an achievable reaction beam 23 highly adjusts
Component 24, the mounting assembly 24 on each column are located at the top of its corresponding ladder 6, including two are oppositely arranged on the column
Mounting plate 241 on front-rear side walls.Each mounting plate 241 is both provided with the pilot hole of one group of regular distribution, is located at same column
On two mounting plates 241 on one group of pilot hole correspond respectively.The main part of reaction beam 23 is made of H profile steel,
On the front and back sides at its left and right ends and middle part, it is fixedly welded with reinforcing plate, purpose is in order to improve the rigidity of reaction beam 23, instead
The both ends of power beam 23 are detachably connected with the mounting assembly 24 of left column 21 and right column 22 by axis pin 25 respectively respectively.Counter-force
The top of beam 23 is symmetrical arranged there are two lifting lug 26, in the installation for needing adjustment reaction beam 23 and left column 21 and right column 22
When position, reaction beam 23 is sling using crane.
The loading beam 3 is arranged in the underface of reaction beam 23, and between left column 21 and right column 22, described to add
The main part of carrier beam 3 is made of H profile steel, on the left and right ends of loading beam 3 and the front and back sides at middle part, is also fixedly welded with
Reinforcing plate, purpose is in order to improve the rigidity of loading beam 3.The lower surface at 23 middle part of upper surface and reaction beam at 3 middle part of loading beam,
It is provided with third rubber mat plate 27, two the second rubber mat plates 27 are positive opposite, and the telescoping mechanism 4 is jack, is located at and adds
Between the third rubber mat plate 27 of carrier beam 3 and the third rubber mat plate 27 of reaction beam 23, telescoping mechanism 4 provides dynamic for loading beam 3
Power.
Two lower supporting beams 7 for being used to support box culvert 8 are provided on the upper surface of the pedestal 1, two lower supporting beams 7 are in
It is one in front and one in back arranged in parallel, each lower supporting beam 7 is detachably connected with pre-buried beam below, and then is adjusted under two and props up
The width between beam 7 is supportted, with the box culvert suitable for multiple models.The axis of the loading beam 3, with the axis of reaction beam 23 and two
The axis of a lower supporting beam 7 is parallel, and the axis of loading beam 3 and reaction beam 23 is respectively positioned on box culvert central axis in a state of use
Surface and in parallel.The top of the lower supporting beam 7 is provided with matched first rubber mat plate 71, loading beam
3 bottom is equipped with the second matched rubber mat plate, the thickness of the first, second rubber mat plate >=25mm.It was using
Cheng Zhong avoids loading beam 3 and lower supporting beam 7 from being in direct contact with box culvert, and local pressure is excessive to be caused to destroy.
The operation principle of external pressure load loading device for concrete box culvert, includes the following steps：Step 1, according to case
The level height for containing 8 size adjusting 23 vertical direction of reaction beam, adjusts the width between two lower supporting beams 7, adjustment finishes
Afterwards by 8 traverse of box culvert in 7 in two lower supporting beams, two openings of box culvert 8 are respectively facing left column 21 and right column 22.It will add
Carrier beam 3 is disposed across the upper surface of box culvert 8, keeps the axis of loading beam 3 parallel with 8 axis of box culvert, ensures that the both ends of loading beam 3 are stretched out
The left and right sides of box culvert 8.Meanwhile ensureing two vertical sides of box culvert, it is located at the surface of two lower supporting beams 7.It will
Telescoping mechanism 4 is positioned over the centre position of the third rubber mat plate 27 of 3 upper surface of loading beam, adjusts telescoping mechanism 4, keeps it flexible
End is just contacted with the third rubber mat plate 27 of 23 bottom of reaction beam.
Step 2, starts telescoping mechanism 4, and telescoping mechanism 4 applies load to the top of box culvert 8 by loading beam 3, applies and carry
Lotus is by the way of stage loading, and loading speed is about 30kN/m per minute, measures the practical cracking load value of box culvert 8.Case
Contain the following several steps of measurement point of 8 practical cracking load value：The first step is pressed by zero loading to the 80% of contraction payload values
The 20% of contraction payload values carries out stage loading, and every grade of holding loading load lmin, observation has free from flaw, if there is crack,
Its width is measured with reading microscope and clearance gauge.Second step continues to carry out stage loading by the 10% of contraction payload values, often
Grade keeps loading load lmin, after loading to contraction payload values, keeps contraction load 3min, and it is wide to measure crack again
Degree.Third walks, and in the case where measuring fracture width less than 0.02mm, continues 5% stage loading by contraction payload values,
Every grade keeps loading load 3min until fracture width meets or exceeds 0.02mm.
Step 3 is applied load and is also added using classification to continuing to load at the top of box culvert on the basis of step 2
The mode of lotus measures the actual breaking load value of box culvert 8.The following several steps of the measurement of actual breaking load value point：The first step continues
Loading keeps loading load lmin, whether there is or not destructions for observation to providing the 80% of failing load.Second step, such as do not destroy, continue by
Provide that the 10% of failing load value continues stage loading, every grade keeps loading load lmin, after loading to regulation failing load value,
Loading load 3min is kept, checks and destroys situation.Third walks, and does not destroy such as, continues to add by 5% classification of regulation failing load value
Lotus, every grade of holding loading load 3min, until destroying.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered
Belong to the scope of protection of the utility model.
Claims (6)
1. a kind of external pressure load loading device for concrete box culvert, including pedestal, rack, loading beam and telescoping mechanism,
It is characterized in that, the rack includes left column, right column and reaction beam, and left column is parallel with right column to be vertically provided at pedestal
On；The reaction beam is arranged horizontally in the top of pedestal, and both ends are connected with the top of left column and right column respectively；It is described to add
Carrier beam is set to the underface of reaction beam, and between left column and right column；Telescoping mechanism be located at loading beam and reaction beam it
Between medium position；Two lower supporting beams for being used to support box culvert are provided on the pedestal, two lower supporting beams are previous in one
After be arranged in parallel.
2. a kind of external pressure load loading device for concrete box culvert according to claim 1, which is characterized in that pedestal
Upper surface in set there are two fastener inserts in the first from left right side, each fastener inserts include that two of two parallel longitudinal arrangements are pre-
Beam is buried, lower supporting beam is detachably connected with pre-buried beam below.
3. a kind of external pressure load loading device for concrete box culvert according to claim 1, which is characterized in that described
The top of left column and right column is respectively equipped with the mounting assembly of an achievable counter-force depth of beam adjustment, the both ends of reaction beam
Detachably it is connected with the mounting assembly of left column and right column respectively by axis pin；The top of reaction beam, be symmetrical arranged there are two
Lifting lug.
4. a kind of external pressure load loading device for concrete box culvert according to claim 1, which is characterized in that described
The axis of loading beam, it is parallel with the axis of the axis of reaction beam and two lower supporting beams；The top of the lower supporting beam is arranged
There is matched first rubber mat plate, the bottom of loading beam is equipped with the second matched rubber mat plate, and first, second
The thickness of rubber mat plate >=25mm.
5. a kind of external pressure load loading device for concrete box culvert according to claim 1, which is characterized in that described
Left column and right column are the frame structure of steel, and are installed with ladder respectively, and two ladders are in symmetrical mode cloth
It sets.
6. a kind of external pressure load loading device for concrete box culvert according to claim 1, which is characterized in that described
The main part of reaction beam and loading beam is made of H profile steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420312.3U CN207636408U (en) | 2017-10-31 | 2017-10-31 | A kind of external pressure load loading device for concrete box culvert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420312.3U CN207636408U (en) | 2017-10-31 | 2017-10-31 | A kind of external pressure load loading device for concrete box culvert |
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| Publication Number | Publication Date |
|---|---|
| CN207636408U true CN207636408U (en) | 2018-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721420312.3U Expired - Fee Related CN207636408U (en) | 2017-10-31 | 2017-10-31 | A kind of external pressure load loading device for concrete box culvert |
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| CN (1) | CN207636408U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088733A (en) * | 2017-10-31 | 2018-05-29 | 青岛昊河水泥制品有限责任公司 | A kind of external pressure load loading device and test method for concrete box culvert |
-
2017
- 2017-10-31 CN CN201721420312.3U patent/CN207636408U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088733A (en) * | 2017-10-31 | 2018-05-29 | 青岛昊河水泥制品有限责任公司 | A kind of external pressure load loading device and test method for concrete box culvert |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180720 |