CN209429388U - A kind of modified steel pipe concrete profiled pile - Google Patents
A kind of modified steel pipe concrete profiled pile Download PDFInfo
- Publication number
- CN209429388U CN209429388U CN201822044954.9U CN201822044954U CN209429388U CN 209429388 U CN209429388 U CN 209429388U CN 201822044954 U CN201822044954 U CN 201822044954U CN 209429388 U CN209429388 U CN 209429388U
- Authority
- CN
- China
- Prior art keywords
- skeleton
- cross
- cylinder
- column
- steel pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Rod-Shaped Construction Members (AREA)
Abstract
The utility model provides a kind of modified steel pipe concrete profiled pile, including the cylinder and skeleton with hollow structure using steel plate production, skeleton is placed in the cavity of cylinder, cylinder includes confluence and several column limbs, skeleton includes several walings and several cross reinforcings, waling is set in column limb, and the both ends of cross reinforcing are connect with two walings respectively.The concrete of confluence is constrained by the way that skeleton is arranged in the cavity of steel pipe; limit the lateral expansion of concrete; protect the inner corner trim of Special-Shaped Column; skeleton is designed using frame-type; form the structure mutually restricted; local pressure unevenness, the excessive deformation for leading to skeleton are prevented, to lose the protection to inner corner trim.
Description
Technical field
The utility model relates to concrete filled steel tube field more particularly to a kind of modified steel pipe concrete profiled piles.
Background technique
Special-Shaped Column refers under the premise of meeting the requirement such as the rigidity of structure and bearing capacity, uses function, building according to building
The requirement of design arrangement and the column for taking different geometries section: the column of the shaped cross such as T, L, cross, and section
The wide length depth ratio of the limb of each limb is not more than 4 column.Each limb limb length of general Special-Shaped Column is equal, and shock resistance is than unequal abnormity
Column is more preferable.
Steel plate is fabricated to the shell of Special-Shaped Column by conventional steel concrete profiled pile, is poured concrete in the cavities and is formed one
The concrete filled steel tube of body, under xial feed effect, inner corner trim region is easiest to that stress collection occurs conventional steel concrete profiled pile
In and destroy, that is, there is inner corner trim phenomenon, can high degree weaken the vertical bearing capacity of structural column.In the prior art, it adopts
Spliced with multi-cavity steel tube or weld the modes such as reinforcing rib to improve the restriction ability to concrete, but either steel pipe splicing or
Increase reinforcing rib and be directed to welding procedure, welding procedure not only causes centainly to destroy to steel pipe, generates thermal stress, while weld seam
Between uneven and solder skip the problems such as, cause to be easy to appear the much problems of local stress.And in the inside of outer cover of steel plate
Progress welding difficulty is big, and operating space is small, and whole difficulty of construction is larger, and construction period is long.
In view of this, it is proposed that a kind of modified steel pipe concrete profiled pile, to solve the above problems.
Summary of the invention
The purpose of this utility model is to provide a kind of modified steel pipe concrete profiled piles, by the confluence of cylinder
Skeleton is set to realize the protection to inner corner trim and the restriction ability of concrete, to realize the appearance for preventing inner corner trim phenomenon, is mentioned
High Special-Shaped Column is in vertical bearing capacity.
The technology that the utility model uses is:
A kind of modified steel pipe concrete profiled pile, including the cylinder and bone with hollow structure using steel plate production
Frame, skeleton are placed in the cavity of cylinder, and cylinder includes confluence and several column limbs, and skeleton includes several walings and several
Cross reinforcing, waling are set in column limb, and the both ends of cross reinforcing are connect with two walings respectively.
The concrete of confluence is constrained by the way that skeleton is arranged in the cavity of steel pipe, limits the lateral expansion of concrete,
Protect the inner corner trim of Special-Shaped Column, skeleton is designed using frame-type, forms the structure that mutually restricts, prevent local pressure unevenness,
The excessive deformation for leading to skeleton, to lose the protection to inner corner trim.
As advanced optimizing for scheme, cylinder is circumferentially with several inner corner trims in confluence, and inner corner trim is apart from cross reinforcing
Vertical range be 1 ~ 2cm.Cross reinforcing guarantees protecting effect, prevents the concrete stone of bulky grain as close to inner corner trim
Material is fallen between the two, leads to concreting leakiness, structure is not close.
As advanced optimizing for scheme, the limb height and the wide ratio of limb of cylinder are 2-3.The limb height and limb of Special-Shaped Column are wide
Ratio is smaller, and the relative scale that skeleton can constrain is bigger, and protecting effect is better.
As advanced optimizing for scheme, the longitudinal arrangement spacing of cross reinforcing is 80-200mm.Rationally control is laterally
The spacing of reinforcing rib longitudinal direction will guarantee that the big building stones of concrete smooth can pass through, and guarantee the intensity of skeleton.
As advanced optimizing for scheme, cross reinforcing is connected to the inside that waling leans on confluence.In skeleton
Concrete lateral expansion when, outward from center, the tie point of cross reinforcing and waling is arranged in longitudinal direction active force
The inside of reinforcing rib plays the role of protecting tie point, and relative inner is easier stress and is destroyed on the outside.
As advanced optimizing for scheme, when the cross section of cylinder is cross, four walings and four column are laterally
Reinforcing rib forms skeleton, and skeleton is in rectangular configuration.Skeleton correspond to Special-Shaped Column be cross Special-Shaped Column when, be designed as the frame of rectangle
Formula structure forms the force structure of symmetry.
As advanced optimizing for scheme, when the cross section of cylinder is T-shaped, cross reinforcing includes the first laterally reinforcement
Muscle and the second cross reinforcing, the second cross reinforcing are arcuate structure, three walings, two the first cross reinforcings of column
Skeleton, the fan-shaped structure of skeleton are formed with second cross reinforcing of column, sector is right angle fan.When Special-Shaped Column is T-shaped,
Cylinder without inner corner trim is protected using the cross reinforcing of arc, in concrete lateral expansion, the reinforcing rib of arc
Uniform force.
As advanced optimizing for scheme, when the cross section of cylinder is L-shaped, cross reinforcing includes the first laterally reinforcement
Muscle and the second cross reinforcing, the second cross reinforcing are arcuate structure, two walings, first cross reinforcing of column
Skeleton, skeleton semicircular in shape structure are formed with second cross reinforcing of column.Similarly with T-shaped Special-Shaped Column, L-shaped Special-Shaped Column
Cylinder without inner corner trim is protected using the cross reinforcing of arc, so that skeleton is more uniformly stressed.
As advanced optimizing for scheme, waling is located at the middle part of the column limb width direction of cylinder.The pendulum of skeleton
To the stress for being related to skeleton, the position of center line of cylinder is arranged in waling, and skeleton is more uniformly stressed, and constrains coagulation
The ability of soil is more evenly.
As advanced optimizing for scheme, waling is angle steel.Angle steel itself has certain triangle stability, than
Steel plate and reinforcing bar are more suitable for force structure, while the medial surface of angle steel provides the link position of cross reinforcing, and material is easy
, it is complete in specifications.
Compared with prior art, the utility model has the beneficial effects that
The concrete of confluence is constrained by the way that skeleton is arranged in the cavity of steel pipe, limits the lateral expansion of concrete,
Protect the inner corner trim of Special-Shaped Column, skeleton is designed using frame-type, forms the structure that mutually restricts, prevent local pressure unevenness,
The excessive deformation for leading to skeleton, to lose the protection to inner corner trim.
For existing common three kinds of Special-Shaped Columns, the shape of skeleton is respectively optimized, reaches save the cost, and guarantee effect
Realization.
Cross reinforcing guarantees protecting effect as close to inner corner trim, prevents the concrete building stones of bulky grain from falling into the two
Between, lead to concreting leakiness, structure is not close.
Rationally the spacing of control cross reinforcing longitudinal direction will guarantee that the big building stones of concrete smooth can pass through, and guarantee skeleton
Intensity.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of modified steel pipe concrete profiled pile provided by the utility model;
Fig. 2 is a kind of top view of modified steel pipe concrete profiled pile provided by the utility model;
Fig. 3 is a kind of another structural schematic diagram of modified steel pipe concrete profiled pile provided by the utility model;
Fig. 4 is a kind of another structural schematic diagram of modified steel pipe concrete profiled pile provided by the utility model.
Specific embodiment
The utility model is described in detail in each embodiment shown in reference to the accompanying drawing, but it should be stated that,
These embodiments are not limitation of the utility model, those of ordinary skill in the art according to these embodiments made by function
Energy, method or equivalent transformation or substitution in structure, belong within the protection scope of the utility model.
In the description of the present embodiment, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the utility model and creates and simplify description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as the limitation created to the utility model.
In addition, term " first ", " second ", " third " etc. are used for description purposes only, it is not understood to indicate or imply
Relative importance or the quantity for implicitly indicating indicated technical characteristic.The feature of " first ", " second " etc. is defined as a result,
It can explicitly or implicitly include one or more of the features.In the description that the utility model is created, unless otherwise
Illustrate, the meaning of " plurality " is two or more.
Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to removable
Connection is unloaded, or is integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, can pass through
Concrete condition understands concrete meaning of the above-mentioned term in the utility model creation.
Embodiment 1:
Referring to shown in attached drawing 1-4, a kind of modified steel pipe concrete profiled pile, including hollow using having for steel plate production
The cylinder 1 and skeleton 2 of structure, skeleton 2 are placed in the cavity of cylinder 1, and cylinder 1 includes confluence 5 and several column limbs 6, skeleton 2
Including several walings 3 and several cross reinforcings 4, waling 3 is set in column limb 6, the both ends of cross reinforcing 4
It is connect respectively with two walings 3.
Skeleton 2 is located at the inside of cylinder 1, is formed with the confluence 5 of cylinder 1 and intersects placement, skeleton 2 is as far as possible by confluence
5 cover, and when 1 center coagulation body of cylinder expands, squeeze first skeleton 2, the inner corner trim 7 of cylinder 1 is correspondingly arranged on two
Root waling 3 and a column cross reinforcing 4 form protection face to inner corner trim 7.
It for each inner corner trim 7 of cylinder 1, is provided with above-mentioned protection face and is protected, prevent inner corner trim 7 existing
The generation of elephant.For skeleton 2, skeleton 2 is tower structure, corresponds to the inner corner trim 7 with symmetry and has carried out symmetry
Design, has prevented the problem of local pressure unevenness in stress;For protection face single in skeleton 2, it is desirable to it is deformed,
So just needing for a column cross reinforcing 4 to be deformed just can be with, and cross reinforcing 4 has waling 3 to be stretched,
Skeleton 2 receives the active force outward from center, each structure has what is deformed outward to become under the lateral expansion effect of concrete
Want to deform outward to, cross reinforcing 4, it is necessary to which skeleton 2 has structure to deform inside just can be with.Therefore, 2 bracket of skeleton is formed
Only there is being broken the deformation it may also happen that cross reinforcing 4 in the structure of skeleton 2, causes to lose in structure constrained each other
Protective effect to inner corner trim 7.
The concrete of confluence 5 is constrained by the way that skeleton 2 is arranged in the cavity of steel pipe, the transverse direction for limiting concrete is swollen
It is swollen, the inner corner trim 7 of Special-Shaped Column is protected, skeleton 2 is designed using frame-type, is formed the structure mutually restricted, is prevented local pressure
Uneven, the excessive deformation for leading to skeleton 2, to lose the protection to inner corner trim 7.
In the present embodiment, Special-Shaped Column is cross tube Special-Shaped Column, and as shown in Figs. 1-2, the cross section of cylinder 1 is cross
When shape, four walings 3 and four column cross reinforcings 4 form skeleton 2, and skeleton 2 is in rectangular configuration.The corresponding abnormity of skeleton 2
When column is cross Special-Shaped Column, it is designed as the tower structure of rectangle, forms the force structure of symmetry.Cruciate cylinder 1 exists
It is that each column limb 6 is wide in routine, so the confluence 5 of cylinder 1 is square, the cross-sectional shape of skeleton 2 is also square,
Two square centers are overlapped, and for shown in 45 ° of settings and Fig. 2.Corresponding four inner corner trims 7 of skeleton 2 set that there are four protections at this time
Face is in 45 ° of relationships, and the stress of cross reinforcing 4 is impartial at this time, realizes the protection to four inner corner trims 7.
Embodiment 2:
It please refers to shown in Fig. 1-4, the present embodiment and the difference of embodiment 1 are that the cross section of the present embodiment middle column body 1 is T
Design is optimized for T-shaped Special-Shaped Column in font, skeleton 2.
In the present embodiment, when the cross section of cylinder 1 is T-shaped, cross reinforcing 4 include the first cross reinforcing 41 with
Second cross reinforcing 42, the second cross reinforcing 42 are arcuate structure, and three walings 3, two column first are laterally reinforced
Muscle 41 and second cross reinforcing of column 42 form skeleton 2, the fan-shaped structure of skeleton 2, and sector is right angle fan.When Special-Shaped Column is
When T-shaped, the cylinder of no inner corner trim 7 is protected using the cross reinforcing 4 of arc, in concrete lateral expansion, arc
The reinforcing rib uniform force of shape.
In the present embodiment, T-shaped Special-Shaped Column has lacked a cylinder 1, for skeleton for cross Special-Shaped Column
2 have also lacked a waling 3, then the symmetrical structure formed between three walings 3 can be isosceles right angle
Triangle and right angle fan, it is well known that arc-shaped structure is more preferable than straightsided shape structure stress, using the knot of right angle fan
Structure, the cylinder from no inner corner trim 7 is closer, and the area of 2 confined concrete of skeleton is bigger.
Embodiment 3:
It please refers to shown in Fig. 1-4, the present embodiment and the difference of embodiment 3 are the cross sections of the Special-Shaped Column in the present embodiment
Design is optimized for cylinder 1 in structure for L-shaped, skeleton 2.
In the present embodiment, when the cross section of cylinder 1 is L-shaped, cross reinforcing 4 include the first cross reinforcing 41 with
Second cross reinforcing 42, the second cross reinforcing 42 are arcuate structure, and two walings 3, a column first are laterally reinforced
Muscle 41 and second cross reinforcing of column 42 form skeleton 2,2 semicircular in shape structure of skeleton.Similarly with T-shaped Special-Shaped Column, L-shaped
The cylinder without inner corner trim 7 of Special-Shaped Column is protected using the cross reinforcing 4 of arc, so that skeleton 2 is more uniformly stressed.
It is referred to Special-Shaped Column T-shaped in embodiment 2, skeleton 2 should guarantee the protection to inner corner trim 7, and need to crossing
Area as far as possible big that area 5 covers, will also guarantee self structure symmetry, and form symmetrical structure after being combined with cylinder 1;It is comprehensive
Consider, above-mentioned requirements are able to satisfy using the skeleton 2 of semicircular structure as shown in Figure 4.
Embodiment 4:
It please refers to shown in Fig. 1-4, the present embodiment is opposite with cylinder 1 for skeleton 2 on the basis of above three embodiments
Position, carried out detailed optimization, improved the restraining force of skeleton 2 protecting effect to inner corner trim 7 and the lateral expansion to concrete.
In the present embodiment, vertical range of the inner corner trim 7 apart from cross reinforcing 4 is 1 ~ 2cm.Cross reinforcing 4 is as far as possible
Close to inner corner trim 7, guarantees protecting effect, prevent the concrete building stones of bulky grain from falling between the two, cause concreting not close
Real, structure is not close.
As advanced optimizing for scheme, the limb height and the wide ratio of limb of cylinder 1 are 2-3.The limb height and limb of Special-Shaped Column are wide
Ratio it is smaller, the relative scale that skeleton 2 can constrain is bigger, and protecting effect is better.
As advanced optimizing for scheme, the longitudinal arrangement spacing of cross reinforcing 4 is 80-200mm.Rationally control is laterally
The longitudinal spacing of reinforcing rib 4 will guarantee that the big building stones of concrete smooth can pass through, and guarantee the intensity of skeleton 2.
As advanced optimizing for scheme, cross reinforcing 4 is connected to the inside that waling 3 leans on confluence 5.Skeleton
When concrete lateral expansion in 2, outward from center, the tie point setting of cross reinforcing 4 and waling 3 exists active force
The inside of waling 3 plays the role of protecting tie point, and relative inner is easier stress and is destroyed on the outside.
As advanced optimizing for scheme, waling 3 is located at the middle part of 6 width direction of column limb of cylinder 1.Skeleton 2
Be flapped toward the stress for being related to skeleton 2, the position of center line of cylinder 1 is arranged in waling 3, and skeleton 2 is more uniformly stressed,
The ability of confined concrete is more evenly.
As advanced optimizing for scheme, waling 3 is angle steel.Angle steel itself has certain triangle stability,
It is more suitable for force structure than steel plate and reinforcing bar, while the medial surface of angle steel provides the link position of cross reinforcing 4, material
It is easy to get, it is complete in specifications.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model
Body explanation, they are all without departing from made by the utility model skill spirit not to limit the protection scope of the utility model
Equivalent implementations or change should be included within the scope of protection of this utility model.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of modified steel pipe concrete profiled pile, which is characterized in that including using steel plate production with hollow structure
Cylinder (1) and skeleton (2), the skeleton (2) are placed in the cavity of the cylinder (1), and the cylinder (1) includes confluence
(5) and several column limbs (6), the skeleton (2) include several walings (3) and several cross reinforcings (4), the longitudinal direction
Reinforcing rib (3) be set to the column limb (6) in, the both ends of the cross reinforcing (4) respectively with two walings (3)
Connection.
2. a kind of modified steel pipe concrete profiled pile according to claim 1, which is characterized in that the cylinder (1) exists
The confluence (5) is circumferentially with several inner corner trims (7), and vertical range of the inner corner trim (7) apart from the cross reinforcing (4) is
1~2cm。
3. a kind of modified steel pipe concrete profiled pile according to claim 2, which is characterized in that the cylinder (1)
Limb height and the wide ratio of limb are 2-3.
4. a kind of modified steel pipe concrete profiled pile according to claim 3, which is characterized in that the cross reinforcing
(4) longitudinal arrangement spacing is 80-200mm.
5. a kind of modified steel pipe concrete profiled pile according to claim 4, which is characterized in that the cross reinforcing
(4) it is connected to the inside that the waling (3) lean on the confluence (5).
6. a kind of modified steel pipe concrete profiled pile according to claim 5, which is characterized in that the cylinder (1)
When cross section is cross, four walings (3) form the skeleton (2) with the four column cross reinforcings (4),
The skeleton (2) is in rectangular configuration.
7. a kind of modified steel pipe concrete profiled pile according to claim 5, which is characterized in that the cylinder (1)
When cross section is T-shaped, the cross reinforcing (4) includes the first cross reinforcing (41) and the second cross reinforcing (42),
Second cross reinforcing (42) is arcuate structure, three walings (3), two column first cross reinforcings
(41) skeleton (2), the fan-shaped structure of the skeleton (2), the fan are formed with column second cross reinforcing (42)
Shape is right angle fan.
8. a kind of modified steel pipe concrete profiled pile according to claim 5, which is characterized in that the cylinder (1)
When cross section is L-shaped, the cross reinforcing (4) includes the first cross reinforcing (41) and the second cross reinforcing (42),
Second cross reinforcing (42) is arcuate structure, two walings (3), column first cross reinforcing
(41) skeleton (2), skeleton (2) the semicircular in shape structure are formed with column second cross reinforcing (42).
9. a kind of modified steel pipe concrete profiled pile described in one of -8 according to claim 1, which is characterized in that the longitudinal direction
Reinforcing rib (3) is located at the middle part of column limb (6) width direction of the cylinder (1).
10. a kind of modified steel pipe concrete profiled pile according to claim 9, which is characterized in that described longitudinally reinforced
Muscle (3) is angle steel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201822044954.9U CN209429388U (en) | 2018-12-07 | 2018-12-07 | A kind of modified steel pipe concrete profiled pile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201822044954.9U CN209429388U (en) | 2018-12-07 | 2018-12-07 | A kind of modified steel pipe concrete profiled pile |
Publications (1)
Publication Number | Publication Date |
---|---|
CN209429388U true CN209429388U (en) | 2019-09-24 |
Family
ID=67971022
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201822044954.9U Expired - Fee Related CN209429388U (en) | 2018-12-07 | 2018-12-07 | A kind of modified steel pipe concrete profiled pile |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN209429388U (en) |
-
2018
- 2018-12-07 CN CN201822044954.9U patent/CN209429388U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106014452B (en) | A kind of Confined High Strength Concrete support system suitable for subterranean tunnel | |
CN104790424B (en) | The hardened system on generation power foundation of wind power ring basis and reinforcement means thereof | |
CN109098358A (en) | A kind of self-locking reinforcing bar connection grout sleeve | |
CN108118783A (en) | A kind of connecting node of steel core concrete column and girder steel | |
CN209429388U (en) | A kind of modified steel pipe concrete profiled pile | |
CN109610732A (en) | A kind of steel pipe concrete profiled pile of internal frame | |
CN109610734A (en) | A kind of reinforced concrete frame column with runback bit function | |
CN106958321A (en) | A kind of reinforced column round steel piece ruggedized construction and its construction method | |
CN207944323U (en) | The horizontal splicing seams of precast assembly pier stud and cushion cap grouting exhaust structure | |
CN104652446B (en) | Interim shaped steel lattice column fills core apparatus and method thereof | |
CN207110242U (en) | A kind of I-shaped reinforcing bar steel core concrete column structure | |
CN206418516U (en) | A kind of combined embedded footing on piles, low capped pile foundation plinth | |
CN109707103A (en) | The replaceable coupling beam of Self-resetting shear energy dissipation type | |
CN109386053A (en) | A kind of assembled steel reinforced concrete column and reinforced beam connection structure entirely | |
CN208152255U (en) | A kind of indent coupled column and double girder steel connection structures | |
CN206829497U (en) | A kind of reinforced column round steel piece ruggedized construction | |
CN113482036A (en) | Column base structure of reinforced concrete and construction method thereof | |
CN205399188U (en) | Two high mound binders of limb of removable shock attenuation power consumption type | |
CN206328689U (en) | A kind of Cast-in-situ Beam is without Temporary Piers support | |
CN208762862U (en) | A kind of assembled steel reinforced concrete arch-type bridge prefabricated stand column shock-resistant node | |
KR101455503B1 (en) | A fabrication type standbar lattice girder | |
CN211665749U (en) | Fixing and positioning device for reinforcing cage of bored pile | |
CN207944328U (en) | The horizontal splicing seams grouting exhaust structure of precast assembly pier stud | |
CN106245583A (en) | A kind of upright cross narrow deep thin-walled barrage | |
CN205399345U (en) | Slope protection brick |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190924 Termination date: 20201207 |