CN107090836A - It is a kind of suitable for lattice column of stand column pile grafting and preparation method thereof - Google Patents
It is a kind of suitable for lattice column of stand column pile grafting and preparation method thereof Download PDFInfo
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- CN107090836A CN107090836A CN201710512606.7A CN201710512606A CN107090836A CN 107090836 A CN107090836 A CN 107090836A CN 201710512606 A CN201710512606 A CN 201710512606A CN 107090836 A CN107090836 A CN 107090836A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 63
- 239000010959 steel Substances 0.000 claims abstract description 63
- 230000002787 reinforcement Effects 0.000 claims abstract description 39
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000002708 enhancing effect Effects 0.000 claims 1
- 230000006872 improvement Effects 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
The invention discloses a kind of lattice column being applied to stand column pile grafting, including the non-intrusive section with the first cross dimensions, the inserting paragraph with the second cross dimensions and positioned at plate body between the two, wherein, non-intrusive section end face is fastenedly connected with the side surface of plate body one and is in reinforcement connection by multiple angle steel；Inserting paragraph end face is fastenedly connected with another side surface of plate body and is in reinforcement connection by multiple angle steel；Non-intrusive section is coaxial with inserting paragraph, and the section maximum length of the inserting paragraph is less than steel reinforcement cage internal diameter, causes inserting paragraph to can be inserted into steel reinforcement cage in this way and plate body surface is abutted with steel reinforcement cage end face, so as to realize the grafting of lattice column and stand column pile.The invention also discloses corresponding preparation method.The present invention passes through the Optimal improvements to lattice rod structure, its inserted terminal is set to be adapted to the cross dimensions of column pile cages, so as to realize reliable grafting between lattice column and stand column pile, without increasing stake footpath, and difficulty of construction or reduction structure security intensity will not be increased.
Description
Technical field
The invention belongs to construction engineering technical field, and in particular to it is a kind of be applied to the lattice column of stand column pile grafting and its
Preparation method.
Background technology
The base pit engineering for having horizontal inner support is set up, setting vertical supporting system is generally required, to bear to support rod member
The load such as deadweight.Foundation ditch vertical supporting system, generally inserts the form of column pile foundation using lattice column.Lattice column insertion is vertical
Stanchion is necessary to ensure that in the range of insertion the steel reinforcement cage internal diameter of stand column pile is more than the catercorner length of lattice column.Therefore, foundation ditch is erected
Into support system design process, lattice column cross dimensions is in addition to needing to meet bearing capacity requirement, it is also contemplated that stand column pile stake
Footpath.Lattice column requires section by resistance to overturning control as elongated compression member, bearing capacity when bearing larger vertical load
Size is larger.Column pile bearing capacity is main to be determined by the ultimate bearing capacity and pile body compression bearing of soil, when stake side and stake end
When layer is preferable, minor diameter stand column pile can meet top requirement for bearing capacity.So in Practical Project, the lattice of big cross section can be run into
The stand column pile of post and minor diameter is mismatched, and steel reinforcement cage internal diameter is less than the situation of lattice column catercorner length.
At present, traditional processing method is to increase stand column pile diameter, or column stake top certain limit is carried out into expanding processing.
For example in patent document CN102767178A a kind of stand column pile is disclosed, it includes pile body and column, column includes steel reinforcement cage
And the lattice column at the top of steel reinforcement cage, and pile body and steel reinforcement cage have the expanding area of stake top and the not expanding area of pile body, stake
Push up the acclive junction of formation tool between the not expanding area of expanding area and pile body.The technical scheme is by expanding stake top lattice piece
Stake diameter in the range of plug-in effect so that meeting under the conditions of lattice column can smoothly insert steel reinforcement cage, substantially reducing drilling
Bored concrete pile resource consumption and construction costs.Although such scheme is only the stake diameter in the range of part increase column portion,
It is that can still increase the empty stake of stand column pile and real stake quantities, causes to increase unnecessary engineering cost, and this there is the gradient
Steel reinforcement cage and column structure can bring the increase of difficulty of construction and the reduction of structure security intensity.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, it is applied to and stand column pile grafting the invention provides a kind of
Lattice column and preparation method thereof, its inserted terminal is set to be adapted to stand column pile by it by the Optimal improvements to lattice rod structure
The cross dimensions of steel reinforcement cage, so as to realize reliable grafting between lattice column and stand column pile, is applied without increasing stake footpath, and will not increase
Work difficulty or reduction structure security intensity.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of lattice being applied to stand column pile grafting
Post, it is characterised in that including the non-intrusive section with the first cross dimensions, the inserting paragraph with the second cross dimensions and be located at
Plate body between the two, wherein,
The non-intrusive section end face is fastenedly connected with the side surface of plate body one and is in reinforcement connection by multiple angle steel；
The inserting paragraph is used to insert in the steel reinforcement cage of stand column pile, and its end face is fastenedly connected with another side surface of the plate body
And be in reinforcement connection by multiple angle steel；
The non-intrusive section is coaxial with the inserting paragraph, and the section maximum length of the inserting paragraph is less than steel reinforcement cage internal diameter,
The lattice column with different section size can be formed in this way, and the inserting paragraph with the second cross dimensions can be inserted
Enter in the steel reinforcement cage and the plate body surface is abutted with steel reinforcement cage end face, so as to realize the slotting of lattice column and stand column pile
Connect.
As a further improvement on the present invention, the inserting paragraph section of the lattice column and/or non-intrusive section end face are rectangle,
Its four flank side surface is fastenedly connected by angle steel with the plate body surface.
As a further improvement on the present invention, the catercorner length of the lattice column inserting paragraph section is less than the interior of steel reinforcement cage
Footpath.
As a further improvement on the present invention, open porose annular slab centered on the plate body, and with lattice column inserting paragraph
It is coaxial with non-intrusive section.
As a further improvement on the present invention, the maximum length of the first cross dimensions of the non-intrusive section is more than described insert
Enter the maximum length of the second cross dimensions of section.
It is another aspect of this invention to provide that a kind of preparation method being applied to the lattice column of stand column pile grafting is provided, its
It is characterised by, comprises the following steps：
S1 is fastenedly connected a plate body in one end end face of one section of lattice column cylinder, i.e., by the side surface of plate body one and this section of lattice
Styletable face is fastenedly connected, and wherein the lattice column cylinder is used as non-intrusive section；
S2 sets angle steel in lattice column side with plate body face component, further reinforces connection；
S3 is fastenedly connected another section of lattice column cylinder in another side surface of plate body using as inserting paragraph, i.e., by another section of lattice
Post cylinder end face is fastenedly connected with another side surface, and this be less than as the lattice column cylinder section maximum length of inserting paragraph it is vertical
Stanchion steel reinforcement cage internal diameter；
S4 sets angle steel between another section of lattice column outer surface and another side surface of the plate body, further to reinforce
Connection, forms the lattice column for having two sections of cross dimensions different in this way and wherein one section is used for and stand column pile as inserting paragraph
Grafting.
As a further improvement on the present invention, the inserting paragraph section of the lattice column and/or non-intrusive section end face are rectangle,
Its four flank side surface is fastenedly connected by angle steel with the plate body surface.
As a further improvement on the present invention, the catercorner length of the lattice column inserting paragraph section is less than the interior of steel reinforcement cage
Footpath.
As a further improvement on the present invention, open porose annular slab centered on the plate body, and with lattice column inserting paragraph
It is coaxial with non-intrusive section.
As a further improvement on the present invention, the maximum length of the first cross dimensions of the non-intrusive section is more than described insert
Enter the maximum length of the second cross dimensions of section.
In general, by the contemplated above technical scheme of the present invention compared with prior art, with following beneficial effect
Really：
(1) lattice column being applied to stand column pile grafting of the invention, by setting steel loop plate, and steel loop in column stake top
More than plate it is non-intrusive section, is below inserting paragraph, can realize that lattice column can by reducing the lattice column cross-section size of inserting paragraph
Influence of the certain depth without taking into account lattice column and the respective intensity effect factor of stand column pile in steel reinforcement cage is successfully inserted at, it is real
Existing grafting reliable between lattice column and stand column pile, without increasing stake footpath, and will not increase difficulty of construction or to reduce structure strong safely
Degree；
(2) lattice column that the present invention is provided need not expand stand column pile stake footpath, be increased or pile crown one with stand column pile stake footpath total length
Determine processing method expanding in scope to compare, it is only necessary to increase by one block of steel loop plate and some welding angle steel, to lattice column upper-lower section
Soldering is carried out, without stand column pile stake footpath is changed, only by reducing the section length of side of lattice column inserting paragraph under steel loop plate, to protect
Card lattice column can be successfully inserted at certain depth in steel reinforcement cage, and top non-intrusive lattice column will by steel loop plate and reinforcing angle
It is overall that vertical force passes to inserting paragraph lattice column and stand column pile, it is ensured that lattice column have with its underpart stand column pile be reliably connected and
Path of Force Transfer, and need not increase stake footpath.
(3) lattice column of the invention solves column pile cages internal diameter less than lattice column catercorner length, causes lattice
The problem of post can not be inserted, have found an easy solution for design and construction personnel, opens design and construction new tool.
This method is simple and easy to do, and structure safety, economical rationality, technology maturation has a extensive future, and benefit is good.
Brief description of the drawings
Fig. 1 is the embodiment of the present invention suitable for the horizontal layout schematic diagram with the lattice column of stand column pile grafting；
Fig. 2 be Fig. 1 in lattice column A-A directions cross-sectional view；
Fig. 3 be Fig. 1 in lattice column B-B directions cross-sectional view；
In all of the figs, same reference represents identical technical characteristic, is specially：1- non-intrusive section lattice column
2- reinforcing angle 3- steel loop plate 4- inserting paragraph lattice column 5- reinforcing angle 6- column pile cages
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As long as in addition, technical characteristic involved in each embodiment of invention described below is each other not
Constituting conflict can just be mutually combined.
Fig. 1 is the embodiment of the present invention suitable for the horizontal layout schematic diagram with the lattice column of stand column pile grafting；Fig. 2 is figure
The cross-sectional view of lattice column in 1 in A-A directions；Cross-section structures of the Fig. 3 for the lattice column in Fig. 1 in B-B directions shows
It is intended to.
As shown in figure 1, the lattice column being applied to stand column pile grafting of the present embodiment, including non-intrusive section 1, the and of plate body 3
Inserting paragraph 4.Plate body 3 is arranged between the non-intrusive of column section 1 and inserting paragraph 4, and is fastenedly connected.In the present embodiment, preferably
Non-intrusive section 1 is reliably welded with plate body 3 in upper surface, and is reinforced by welding angle steel 2, preferably in non-intrusive section 1
Each is respectively provided with angle steel 2 sideways, and with the upper surface reinforcement by connection of plate body 3.
The section maximum length of inserting paragraph 1 is less than steel reinforcement cage internal diameter so that the steel reinforcement cage that inserting paragraph 1 can be inserted into stand column pile
In and cause the surface of plate body 3 abutted with steel reinforcement cage end face, so as to realize the grafting of lattice column and stand column pile
The maximum length of the cross dimensions of non-intrusive section is more than the maximum length of the second cross dimensions of inserting paragraph, for example may be used
To be that the cross-sectional area of inserting paragraph 4 is more than the cross-sectional area of non-intrusive section 1, in this way, the feelings of force request are being met
The cross dimensions of inserting paragraph 4 can suitably be reduced under condition, ensure that inserting paragraph 4 can smoothly be inserted into column pile cages
In 6, to solve the problem of lattice column can not be inserted in column pile cages.
Preferably, inserting paragraph 4 of the plate body below 3 is reliably welded with plate body 3 in lower surface, and is carried out by welding angle steel 5
Reinforce.In this way, on the premise of lattice column stress and weld seam power transmission is ensured, inserting paragraph 4 and stand column pile pile body concrete and
Reinforcing bar is integrally formed, and itself stress shares relatively small, and realization can need not increase stake on the premise of grafting intensity is not influenceed
Footpath and the reliable grafting that difficulty of construction or reduction structure security intensity will not be increased.
In the preferred embodiment, the non-intrusive section 1 and inserting paragraph 4 of lattice column are the square cylinder that section is rectangle, four
Angle steel is respectively provided with individual side, to be connected with the surface of plate body 3.Corresponding, the section of lattice column inserting paragraph 4 is rectangle, and it is maximum
Length is catercorner length, i.e., inserting paragraph catercorner length is less than the internal diameter of steel reinforcement cage, rather than the catercorner length of inserting paragraph 1 is big
In the catercorner length of inserting paragraph 4.
Preferably, plate body 3 is that its center is provided with through hole, is used for certain thickness steel plate, more preferably doughnut-shaped steel plate
Stand column pile tremie is passed through.It is preferred that inserting paragraph 4 and the non-intrusive section 1 of plate body 3 and lattice column are coaxial.
The specific embodiment for using the lattice column of this programme prepare and grafting is constructed, can enter as follows
OK：
(1) one section of lattice column cylinder one end end face be fastenedly connected plate body 3 (preferably doughnut-shaped steel plate, naturally it is also possible to
It is the plate body of other shapes and material), i.e., the side surface of plate body 3 one is fastenedly connected with this section of lattice column end face, wherein the lattice
Post cylinder is used as non-intrusive section 1.
(2) angle steel 2 is set with plate body face component in lattice column side, and preferably by being welded to connect, with to lattice styletable
Face with the end face of plate body 3 further reinforce and is connected.
(3) another section of lattice column cylinder is fastenedly connected using as inserting paragraph 4 in another side surface of plate body 3, i.e., by another section
Another side surface of lattice column cylinder end face and plate body 3 is fastenedly connected, and this as inserting paragraph 4 lattice column cylinder section most
Long length is less than the internal diameter of column pile cages 6, in order in the insertion steel reinforcement cage 6 of inserting paragraph 4.
(4) angle steel 5 is set between another section of lattice column outer surface and another side surface of plate body 3, preferably passes through welding
Connection, is connected with further reinforce.
The lattice column for having two sections of cross dimensions different is formed in this way and wherein one section is used for standing as inserting paragraph
Stanchion grafting, so as to realize that on the premise of lattice column stress and weld seam power transmission is ensured, inserting paragraph 4 is mixed with stand column pile pile body
Solidifying soil and reinforcing bar are integrally formed, and itself stress shares relatively small, and stake need not be increased by not influenceing to realize on the premise of grafting intensity
Footpath and the reliable grafting that difficulty of construction or reduction structure security intensity will not be increased.
Preferably, in implementation process, steel loop plate reserves the circular hole of certain diameter, to ensure that stand column pile tremie is worn
Cross.
The present invention has the advantages that design is simple, it is convenient to construct, reduces investment outlay, ensures that structure is safe, in the deep base such as subway
Hole engineering field has preferable application prospect.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (10)
1. a kind of lattice column being applied to stand column pile grafting, it is characterised in that including the non-intrusive with the first cross dimensions
Section, the inserting paragraph with the second cross dimensions and positioned at plate body between the two, wherein,
The non-intrusive section end face is fastenedly connected with the side surface of plate body one and is in reinforcement connection by multiple angle steel；
The inserting paragraph is used to insert in the steel reinforcement cage of stand column pile, and its end face is fastenedly connected and led to another side surface of the plate body
Multiple angle steel are crossed to be in reinforcement connection；
The non-intrusive section is coaxial with the inserting paragraph, and the section maximum length of the inserting paragraph is less than steel reinforcement cage internal diameter, with this
Mode can form the lattice column with different section size, and cause the inserting paragraph with the second cross dimensions to can be inserted into institute
State in steel reinforcement cage and the plate body surface is abutted with steel reinforcement cage end face, so as to realize the grafting of lattice column and stand column pile.
2. a kind of lattice column being applied to stand column pile grafting according to claim 1, wherein, the insertion of the lattice column
Section section and/or non-intrusive section end face are rectangle, and its four flank side surface is fastenedly connected by angle steel with the plate body surface.
3. a kind of lattice column being applied to stand column pile grafting according to claim 1 or 2, wherein, the lattice column is inserted
The catercorner length for entering section section is less than the internal diameter of steel reinforcement cage.
4. a kind of lattice column being applied to stand column pile grafting according to any one of claim 1 to 3, wherein, it is described
Porose annular slab is opened centered on plate body, and it is coaxial with lattice column inserting paragraph and non-intrusive section.
5. a kind of lattice column being applied to stand column pile grafting according to any one of claim 1 to 4, wherein, it is described
The maximum length of first cross dimensions of non-intrusive section is more than the maximum length of the second cross dimensions of the inserting paragraph.
6. a kind of preparation method being applied to the lattice column of stand column pile grafting, it is characterised in that comprise the following steps：
S1 is fastenedly connected a plate body in one end end face of one section of lattice column cylinder, i.e., by the side surface of plate body one and this section of lattice styletable
Face is fastenedly connected, and wherein the lattice column cylinder is used as non-intrusive section；
S2 sets angle steel in lattice column side with plate body face component, further reinforces connection；
S3 is fastenedly connected another section of lattice column cylinder in another side surface of plate body using as inserting paragraph, i.e., by another section of lattice column post
Body end face is fastenedly connected with another side surface, and this is less than stand column pile as the lattice column cylinder section maximum length of inserting paragraph
Steel reinforcement cage internal diameter；
S4 sets angle steel between another section of lattice column outer surface and another side surface of the plate body, with the further company of reinforcing
Connect, form the lattice column for having two sections of cross dimensions different in this way and wherein one section is used to insert with stand column pile as inserting paragraph
Connect.
7. the preparation method according to claim 6 being applied to the lattice column of stand column pile grafting, wherein, the lattice column
Inserting paragraph section and/or non-intrusive section end face be rectangle, its four flank side surface, which passes through angle steel and the plate body surface and fastened, to be connected
Connect.
8. the preparation method being applied to the lattice column of stand column pile grafting according to claim 6 or 7, wherein, the lattice
The catercorner length of structure post inserting paragraph section is less than the internal diameter of steel reinforcement cage.
9. the preparation method being applied to the lattice column of stand column pile grafting according to any one of claim 6 to 8, its
In, porose annular slab is opened centered on the plate body, and it is coaxial with lattice column inserting paragraph and non-intrusive section.
10. the preparation method being applied to the lattice column of stand column pile grafting according to any one of claim 6 to 9, its
In, the maximum length of the first cross dimensions of the non-intrusive section is more than most greatly enhancing for the second cross dimensions of the inserting paragraph
Degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512606.7A CN107090836A (en) | 2017-06-29 | 2017-06-29 | It is a kind of suitable for lattice column of stand column pile grafting and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512606.7A CN107090836A (en) | 2017-06-29 | 2017-06-29 | It is a kind of suitable for lattice column of stand column pile grafting and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107090836A true CN107090836A (en) | 2017-08-25 |
Family
ID=59640795
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710512606.7A Pending CN107090836A (en) | 2017-06-29 | 2017-06-29 | It is a kind of suitable for lattice column of stand column pile grafting and preparation method thereof |
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| Country | Link |
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| CN (1) | CN107090836A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203307818U (en) * | 2013-05-08 | 2013-11-27 | 周正海 | Stand column structure and foundation pit supporting system including same |
| CN104895092A (en) * | 2015-06-02 | 2015-09-09 | 中建四局第六建筑工程有限公司 | Method for using inner-support temporary latticed column as permanent structure column |
| CN205116202U (en) * | 2015-10-30 | 2016-03-30 | 江苏中大建设集团有限公司 | Stake of prestressing force side and integrated stand of steel lattice column |
| CN207092106U (en) * | 2017-06-29 | 2018-03-13 | 中铁第四勘察设计院集团有限公司 | A kind of lattice column being applied to stand column pile grafting |
-
2017
- 2017-06-29 CN CN201710512606.7A patent/CN107090836A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203307818U (en) * | 2013-05-08 | 2013-11-27 | 周正海 | Stand column structure and foundation pit supporting system including same |
| CN104895092A (en) * | 2015-06-02 | 2015-09-09 | 中建四局第六建筑工程有限公司 | Method for using inner-support temporary latticed column as permanent structure column |
| CN205116202U (en) * | 2015-10-30 | 2016-03-30 | 江苏中大建设集团有限公司 | Stake of prestressing force side and integrated stand of steel lattice column |
| CN207092106U (en) * | 2017-06-29 | 2018-03-13 | 中铁第四勘察设计院集团有限公司 | A kind of lattice column being applied to stand column pile grafting |
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Application publication date: 20170825 |