CN107340383A - Device and preparation method for the measurement of concrete spread foundation sub-grade reaction distribution - Google Patents
Device and preparation method for the measurement of concrete spread foundation sub-grade reaction distribution Download PDFInfo
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- 238000005259 measurement Methods 0.000 title claims abstract description 35
- 238000009826 distribution Methods 0.000 title claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000002689 soil Substances 0.000 claims abstract description 40
- 230000008093 supporting effect Effects 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 46
- 239000010959 steel Substances 0.000 claims description 46
- 230000002787 reinforcement Effects 0.000 claims description 12
- 239000000725 suspension Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 239000003351 stiffener Substances 0.000 claims description 3
- 239000005336 safety glass Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
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- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
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- 238000005345 coagulation Methods 0.000 description 1
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- 238000007599 discharging Methods 0.000 description 1
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- 239000004744 fabric Substances 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
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- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
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Abstract
The invention discloses the device measured for concrete spread foundation sub-grade reaction distribution and preparation method, including native case lateral support, native case bottom supporting, native case side plate and native bottom plate, native case side plate is equipped with described four end faces of native bottom plate and forms a trench structure, filled with foundation soil as supporting course in the trench structure, the native bottom plate is provided with native case bottom supporting, the native case side plate is provided with native case lateral support, and native hole is unloaded wherein being provided with a native case side plate.Not only Production Time is short by the present invention, and detachably, occupation of land is small, and changes the earthwork just, and lighter weight is not taken up an area forever so can arbitrarily move, and can also be coordinated the installation of large-scale counterforce device, be greatly accelerated test process, facilitates the field course layout of laboratory.It is easy to operate, safety is guaranteed, controllability is strong meanwhile this native case can be efficiently used for the measurement of concrete spread foundation sub-grade reaction distribution.
Description
Technical field
The present invention relates to building structure transmission line of electricity concrete spread foundation design field, and in particular to one kind is used for coagulation
The device and preparation method of native spread foundation sub-grade reaction distribution measurement.
Background technology
With the quickening of extra-high voltage grid pace of construction, the basic role power of iron tower of power transmission line will also greatly increase.Mesh
Before, concrete spread foundation is still one of principal mode of electric power line steel tower.All it is strict when designing concrete spread foundation
In accordance with existing national sector standard《Overhead transmission line basic engineering technical regulation》The wide height of step in (DL/T 5219-2014)
Than the requirement no more than 2.5.In order to meet this requirement of the specification, it is necessary to increase the height of bottom plate step, this will cause base
The dosage of plinth concrete is greatly increased, and the eccentric throw more than 1/6 foundation width can not be used to be made to reduce more amount of concrete
Into huge waste.Under normal circumstances, during UHV transmission line is built, foundation cost accounts for the 16%~20% of overall investment,
Therefore the optimization design on basis plays an important role for saving the duration with cost.
From the above analysis, the height of footing step is reduced, the cutting depth of foundation soil can be reduced to a certain extent, from
Cost can be greatly reduced for economic angle, and can accelerate the duration；But on the other hand also bring one and ask
Topic：The height of footing step is reduced, the width height ratio of steps of concrete spread foundation will exceed specification limit.And make at present
When with concrete spread foundation, because lower pressure is increasing, and part geological condition foundation bearing capacity is low, basic bottom
Plate suqare generally requires to increase.In fact, limit value of the concrete spread foundation the ratio of width to height no more than 2.5 is should based on foundation bottom
What the demand that the truncate EDS maps of power assume was set out.Break through in current specification and concrete spread foundation width height ratio of steps limitation is wanted
Ask, it is multiple for the concrete spread foundation bottom plate nonlinear deformation, bottom stress skewness, the stress distribution that thus bring
The problem of hydridization, is studied, and carries out the system research of concrete spread foundation analysis theories and design method when the ratio of width to height is more than 2.5,
And then carry out engineering mimoir and popularization and application, there is important theory significance, economic implications and engineering use value.Therefore, mesh
The concrete spread foundation of preceding aspect ratio have become there is an urgent need to object, an and problem to be solved in specification.
For above demand, it is necessary to sub-grade reaction distribution feelings to concrete spread foundation of the width height ratio of steps more than 2.5
Condition carries out experimental study, is this kind of base preferably to recognize the mechanical characteristic on this kind of basis and sub-grade reaction distribution rule
The Cross section Design of plinth is ready.For this kind of basis, indoor reduced scale experiment can make more multispecimen, change more ginsengs
Number, therefore generally require to do indoor reduced scale experiment；But it is different with outdoor full scale test, it is indoor without ready-made subsoil soil
As the supporting course of experiment loading, the Production Time of making large-sized concrete soil box is long, takes up an area excessive, more soil removal and replacement inconvenience,
Also it is unfavorable for the supporting installation of large-scale counterforce device.
The content of the invention
The purpose of the present invention is to overcome prior art deficiency, and it is an object of the present invention to provide a kind of be used for concrete spread foundation
The device and preparation method of sub-grade reaction distribution measurement, when solving to do concrete spread foundation indoor reduced scale experiment, make big
The Production Time of type concrete soil box is long, takes up an area excessive, more soil removal and replacement inconvenience, is also unfavorable for the supporting peace of large-scale counterforce device
The problems such as dress.
The present invention is achieved through the following technical solutions：
A kind of device for the measurement of concrete spread foundation sub-grade reaction distribution, including native case lateral support, native bottom
Face support, native case side plate and native bottom plate, native case side plate is equipped with described native four end faces of bottom plate and forms a groove profile knot
Structure, for the interior foundation soil that is filled with of the trench structure as supporting course, the native bottom plate, which is provided with, will be used to resist native gravity to soil
The native case bottom supporting of moment of flexure caused by bottom plate, the native case side plate, which is provided with, to be mainly used in resisting earth lateral pressure inside native case
Native case lateral support, be provided with for drawing off and loading unloading for the foundation soil in native case on one of them native case side plate of the device
Native hole.
A kind of device for the measurement of concrete spread foundation sub-grade reaction distribution of the present invention, according to the machine of each part
Reason and function cooperation, influence, are effectively used for the measurement of concrete spread foundation sub-grade reaction distribution each other, can
Effective control of native case stress and deformation in experiment loading procedure is realized to be supported by native case general frame, while by unloading soil
Hole can more easily load and unload the foundation soil in native case.
Further, the native case lateral support is combined by vertical channel member and horizontal angle steel part, horizontal angle steel part
It is welded on vertical channel member side wall, native case lateral support is mainly used in resisting earth lateral pressure inside native case, suppresses soil to extending out
Scattered trend.
Further, the native case bottom supporting is combined by transverse groove steel part and middle angle member, middle angle member
Transverse groove steel part side wall is welded on, native case bottom supporting is mainly used in resisting native gravity to moment of flexure caused by native bottom plate, prevented
Native bottom plate bending deformation is excessive or stress is excessive, hinders normal load.
Further, it is described to unload native hole provided with the closing door for being used to observe stress working condition native in native case.It is described
Close door and be provided with safety glass observation panel.
Further, the native case side plate upper surface is provided with the suspension ring for being used for carrying measurement apparatus.
Further, the transverse groove steel part termination is welded with support connecting plate, and the support connecting plate is attached to native case side
On plate, the transverse groove steel part termination is correspondingly arranged with vertical channel member end；The support connecting plate, native case side plate and vertical
The end of channel member is fixedly connected by inserting bolt.
Further, the native case lateral support includes vertical channel member；The native case bottom supporting includes：Transverse channel steels
Part, the transverse groove steel part termination are correspondingly arranged with vertical channel member end；Support connecting plate, native case side plate and the vertical slot
The end of steel part is fixedly connected by inserting bolt.
Further, the native bottom plate is provided with lower reinforcement angle member with native case side plate junction.
Further, the native case side plate upper end is provided with upper reinforcement angle member.
The present invention is realized by following another technical schemes：
A kind of preparation method of concrete spread foundation sub-grade reaction distribution measurement apparatus, it is characterised in that including step：
Step 1)：Native case lateral support and native case bottom supporting are first made, native case lateral support is by vertical channel member and water
Straight angle steel part combines, and horizontal angle steel part is welded on vertical channel member side wall；Native case bottom supporting is by transverse groove steel part with
Between angle member combine, middle angle member is welded on transverse groove steel part side wall；
Step 2)：Then native case lateral support is connected with native case side plate, native case bottom supporting with native bottom plate；
Step 3)：4 pieces of native case side sheet rooms are connected with joint angle steel part again；Native case side plate and native bottom plate use lower reinforcement
Angle member connects；Native case lateral support connects with native case bottom supporting with bolt with support connecting plate；
Step 4)：Finally ribbed stiffener is enclosed with reinforcement angle member in native case side plate top layout one.
The present invention compared with prior art, has the following advantages and advantages：
The present invention does not use large-sized concrete soil box, but carries out static loading with steel soil case.When steel soil case not only makes
Between it is short, detachably, take up an area it is small, and change the earthwork just, lighter weight is not taken up an area forever so can arbitrarily move, can also coordinate greatly
The installation of type counterforce device, greatly accelerates test process, facilitates the field course layout of laboratory.
Not only Production Time is short by the present invention, takes up an area small, and changes the earthwork just, lighter weight is so arbitrarily can move not forever
Take up an area long, can also coordinate the installation of large-scale counterforce device, greatly accelerate test process, facilitate the field course layout of laboratory.
Meanwhile this native case can be efficiently used for concrete spread foundation sub-grade reaction distribution measurement, it is easy to operate, safety it is guaranteed,
Controllability is strong.
Solve when the experiment of indoor reduced scale is done to concrete spread foundation, make the Production Time mistake of large-sized concrete soil box
It is long, take up an area excessive, more soil removal and replacement is inconvenient, the problems such as being also unfavorable for the supporting installation of large-scale counterforce device.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is a kind of device front view structure signal for the measurement of concrete spread foundation sub-grade reaction distribution of the present invention
Figure；
Fig. 2 is the cross section structure diagram of A-A in Fig. 1 of the present invention；
Fig. 3 is the cross section structure diagram of B-B in Fig. 1 of the present invention；
Fig. 4 is the cross section structure diagram of C-C in Fig. 1 of the present invention；
Fig. 5 is the cross section structure diagram of D-D in Fig. 1 of the present invention；
Mark and corresponding parts title in accompanying drawing：
1- soil case lateral supports, 2- soil case side plates 3- unload native hole, 4- soil bottom plates, and 5- closes door, 6- soil case bottom supportings,
7- transverse groove steel parts, angle member among 8-, 9- suspension ring, the vertical channel members of 10-, 11- horizontal angle steel parts, strengthen angle member under 12-,
13- strengthens angle member, 14- support connecting plates, 15- bolts, 16- joint angle steel parts.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in Fig. 1~5, a kind of device for the measurement of concrete spread foundation sub-grade reaction distribution of the present invention, including
Native case lateral support 1, native case bottom supporting 6, native case side plate 2 and native bottom plate 4, soil is equipped with native 4 four end faces of bottom plate
Case side plate 2 forms a trench structure, is set in the trench structure filled with foundation soil as supporting course, the native bottom plate 4
There is native case bottom supporting 6, the native case side plate 2 is provided with native case lateral support 1, and native hole 3 is unloaded wherein being provided with a native case side plate 2.
Native case side plate and native bottom plate are mainly used in oozing out from native case to the liquid phase in earth retaining box or solid phase.
A kind of device for the measurement of concrete spread foundation sub-grade reaction distribution of the present invention, according to the machine of each part
Reason and function cooperation, influence, are effectively used for the measurement of concrete spread foundation sub-grade reaction distribution each other, can
Effective control of native case stress and deformation in experiment loading procedure is realized to be supported by native case general frame, while by unloading soil
Hole can more easily load and unload the foundation soil in native case.
Native case lateral support 1 is combined by vertical channel member 10 and horizontal angle steel part 11, and horizontal angle steel part 11 is welded on
The vertical side wall of channel member 10, native case lateral support 1 are mainly used in resisting earth lateral pressure inside native case, suppress soil to external diffusion
Trend.
Native case bottom supporting 6 is combined by transverse groove steel part 7 and middle angle member 8, and middle angle member 8 is welded on transverse direction
The side wall of channel member 7, native case bottom supporting 6 are mainly used in resisting native gravity to moment of flexure caused by native bottom plate, prevent native bottom plate
Bending deformation is excessive or stress is excessive, hinders normal load.
Unload native hole 3 and be provided with closing door 5；It is native in the foundation soil in native case, and the native case of observation for discharging and loading
Stress working condition.
The native upper surface of case side plate 2 is provided with the suspension ring 9 for being used for carrying measurement apparatus.Can be in order to measurement dress by suspension ring 9
Put and carry out transfer placement, solve when the experiment of indoor reduced scale is done to concrete spread foundation, make the system of large-sized concrete soil box
Make overlong time, take up an area excessive, more soil removal and replacement is inconvenient, the problems such as being also unfavorable for the supporting installation of large-scale counterforce device.
As shown in figure 3, the termination of transverse groove steel part 7 is correspondingly arranged with the vertical end of channel member 10, the end of transverse groove steel part 7
Head is welded with support connecting plate 14, and the support connecting plate 14 is attached on native case side plate 2, support connecting plate 14, the native and of case side plate 2
The vertical tip end of channel member 10 is fixedly connected by bolt 15.Native case lateral support and native case bottom supporting pass through one block of steel plate
It is integral, is supported as native case general frame, its globality is strong, and effect is more notable with two bolt weldings.
As shown in figure 4, native bottom plate 4 is provided with lower reinforcement angle member 12 with the native junction of case side plate 2.Pass through lower strengthens angle
Steel part 12 can make native bottom plate 4 be connected as an overall structure with native case side plate 2, be easy to be efficiently used for concrete spread foundation
The measurement of sub-grade reaction distribution, it can support what is realized native case stress in experiment loading procedure and deform by native case general frame
Effectively control.
As shown in figure 5, the native upper end of case side plate 2 is provided with upper reinforcement angle member 13.Four sides soil is made by upper reinforcement angle member 13
Case side plate 2 firmly connects, and is easy to be efficiently used for the measurement of concrete spread foundation sub-grade reaction distribution, can be whole by native case
Effective control of native case stress and deformation in experiment loading procedure is realized in the support of body framework.
According to the mechanism and function cooperation of each part, influence each other, be effectively used for concrete expansion
Open up base substrate reaction distribution measurement, can by native case general frame support realize experiment loading procedure in native case stress and
Effective control of deformation, while can more easily load and unload soil in native case by unloading native hole.This native case can be effective for mixed
Solidifying native spread foundation sub-grade reaction distribution measurement, it is easy to operate, safety is guaranteed, controllability is strong.
Embodiment 2
As shown in Fig. 1~5, a kind of preparation method of concrete spread foundation sub-grade reaction distribution measurement apparatus of the present invention,
Including step：
Step 1：Native case lateral support 1 and native case bottom supporting 6 are first made, native case lateral support 1 is by vertical channel member 10
Combined with horizontal angle steel part 11, horizontal angle steel part 11 is welded on the vertical side wall of channel member 10；Native case bottom supporting 6 is by transverse direction
Channel member 7 and middle angle member 8 combine, and middle angle member 8 is welded on the side wall of transverse groove steel part 7；
Step 2：Then native case lateral support 1 and native case side plate 2, native case bottom supporting 6 and native bottom plate 4 are connected；
Step 3：It will be connected again between 4 blocks of native case side plates 2 with joint angle steel part 16；Under native case side plate 2 and native bottom plate 4 use
Strengthen angle member 12 to connect；Native case lateral support 1 and native case bottom supporting 6 are connected with bolt 15 and support connecting plate 14；
Step 4：Finally ribbed stiffener is enclosed with reinforcement angle member 13 in the native top layout one of case side plate 2.
The measurement apparatus prepared by above-mentioned preparation method, concrete spread foundation Foundation pressure point can be efficiently used for
Cloth measures, easy to operate, safety is guaranteed, controllability is strong.The present invention does not use large-sized concrete soil box, but is entered with steel soil case
Row static loading.Not only Production Time is short for steel soil case, detachably, takes up an area small, and changes the earthwork just, lighter weight is so can appoint
Meaning movement is not taken up an area forever, can also be coordinated the installation of large-scale counterforce device, be greatly accelerated test process, facilitate laboratory
Field course layout.
Not only Production Time is short by the present invention, detachably, takes up an area small, and changes the earthwork just, lighter weight is so can be any
Movement is not taken up an area forever, can also be coordinated the installation of large-scale counterforce device, be greatly accelerated test process, facilitate the field of laboratory
Ground arrangement.Meanwhile this native case can be efficiently used for the measurement of concrete spread foundation sub-grade reaction distribution, easy to operate, safety
It is guaranteed, controllability is strong.Solve when the experiment of indoor reduced scale is done to concrete spread foundation, make the system of large-sized concrete soil box
Make overlong time, take up an area excessive, more soil removal and replacement is inconvenient, the problems such as being also unfavorable for the supporting installation of large-scale counterforce device.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (10)
1. a kind of device for the measurement of concrete spread foundation sub-grade reaction distribution, including native case lateral support (1), native bottom
Face support (6), native case side plate (2) and native bottom plate (4), it is characterised in that：It is equipped with described (4) four end faces of native bottom plate
Native case side plate (2) forms a trench structure；
Filled with foundation soil as supporting course in the trench structure；
The native bottom plate (4), which is provided with, to be used to resist the native case bottom supporting (6) that native gravity produces native bottom plate moment of flexure；
The native case side plate (2) is provided with the native case lateral support (1) for being used for resisting earth lateral pressure inside native case；
Wherein, it is provided with any one in four native case side plates (2) and unloads soil for draw off and load the foundation soil in native case
Hole (3).
2. a kind of device for the measurement of concrete spread foundation sub-grade reaction distribution according to claim 1, its feature
It is, the native case lateral support (1) is combined by vertical channel member (10) and horizontal angle steel part (11), horizontal angle steel part
(11) it is welded in the side wall of vertical channel member (10).
3. a kind of device for the measurement of concrete spread foundation sub-grade reaction distribution according to claim 2, its feature
It is, the native case bottom supporting (6) is combined by transverse groove steel part (7) and middle angle member (8), middle angle member (8)
It is welded in the side wall of transverse groove steel part (7).
4. a kind of device for the measurement of concrete spread foundation sub-grade reaction distribution according to claim 3, its feature
It is, transverse groove steel part (7) termination is welded with support connecting plate (14)；
The support connecting plate (14) is attached on native case side plate (2)；
Transverse groove steel part (7) termination is correspondingly arranged with vertical channel member (10) end；The support connecting plate (14), native case
The end of side plate (2) and vertical channel member (10) is fixedly connected by inserting bolt (15).
5. a kind of device for the measurement of concrete spread foundation sub-grade reaction distribution according to claim 1, its feature
It is, the native case lateral support (1) includes：Vertical channel member (10)；
The native case bottom supporting (6) includes：Transverse groove steel part (7), transverse groove steel part (7) termination and vertical channel member
(10) end is correspondingly arranged；
The end of the support connecting plate (14), native case side plate (2) and vertical channel member (10) is fixed by inserting bolt (15)
Connection.
6. a kind of device for the measurement of concrete spread foundation sub-grade reaction distribution according to claim 1, its feature
It is, the native hole (3) of unloading is provided with the closing door (5) for being used for observing stress working condition native in native case；Close on door (5)
Provided with safety glass observation panel.
7. a kind of device for the measurement of concrete spread foundation sub-grade reaction distribution according to claim 1, its feature
It is, native case side plate (2) upper surface is provided with the suspension ring (9) for being used for carrying measurement apparatus.
8. a kind of device for the measurement of concrete spread foundation sub-grade reaction distribution according to claim 1, its feature
It is, the native bottom plate (4) is provided with lower reinforcement angle member (12) with native case side plate (2) junction.
9. a kind of device for the measurement of concrete spread foundation sub-grade reaction distribution according to claim 1, its feature
It is, native case side plate (2) upper end is provided with upper reinforcement angle member (13).
10. a kind of preparation method of concrete spread foundation sub-grade reaction distribution measurement apparatus, it is characterised in that including step：
Step 1)：Native case lateral support (1) and native case bottom supporting (6) are first made, native case lateral support (1) is by vertical channel member
(10) combined with horizontal angle steel part (11), horizontal angle steel part (11) is welded on vertical channel member (10) side wall；Native bottom face
Support (6) is combined by transverse groove steel part (7) and middle angle member (8), and middle angle member (8) is welded on transverse groove steel part
(7) side wall；
Step 2)：Then by native case lateral support (1) and native case side plate (2), native case bottom supporting (6) and native bottom plate (4) even
Connect；
Step 3)：Between 4 pieces of native case side plates (2) joint angle steel part (16) will be used to connect again；Native case side plate (2) and native bottom plate (4)
Using lower reinforcement angle member (12) connection；Native case lateral support (1) and native case bottom supporting (6) bolt (15) and support connection
Plate (14) connects；
Step 4)：Finally ribbed stiffener is enclosed with reinforcement angle member (13) in native case side plate (2) top layout one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710585477.4A CN107340383A (en) | 2017-07-18 | 2017-07-18 | Device and preparation method for the measurement of concrete spread foundation sub-grade reaction distribution |
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Application publication date: 20171110 |