CN109989487A - A kind of anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar - Google Patents
A kind of anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar Download PDFInfo
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- CN109989487A CN109989487A CN201910083352.0A CN201910083352A CN109989487A CN 109989487 A CN109989487 A CN 109989487A CN 201910083352 A CN201910083352 A CN 201910083352A CN 109989487 A CN109989487 A CN 109989487A
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- cuff
- anchor ear
- precast concrete
- concrete beam
- reinforcement
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 25
- 238000005452 bending Methods 0.000 title claims abstract description 23
- 230000002787 reinforcement Effects 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 239000003292 glue Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 7
- 210000003205 muscle Anatomy 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 6
- 230000002421 anti-septic effect Effects 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 26
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007157 ring contraction reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5837—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular form
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of anchor ear connectors of strong bending resistance mechanical connection precast concrete beam stanchion bar.The anchor ear connector includes the two reinforcement cuffs being oppositely arranged, and fixedly connected to the inner side several reinforcing ribs in each reinforcement cuff；Horizontal interval is equipped with a positioning groove and a seal groove on each periphery for reinforcing cuff, and stress ring is equipped in the locating slot, and sealing ring is equipped in the seal groove；A jacket hoop is set in two reinforcement cuff outer sheaths, the locating slot is corresponded on the jacket hoop inner sidewall equipped with a groove, the threaded fastener being arranged across the groove is equipped in jacket hoop, the threaded fastener is fixed on the reinforcement cuff for abutting the jacket hoop, stress ring together.The anchor ear connector avoids human weld's technological operation, quality controllable, and mechanical connection is reliable, and labor intensity reduces, and antiseptic property is good, and rolled steel dosage is few, and product cost, construction cost all substantially reduce.
Description
Technical field
The present invention relates to a kind of anchor ear connectors of strong bending resistance mechanical connection precast concrete beam stanchion bar.
Background technique
Current concurrent, wind-power electricity generation concrete tower bar etc., big method of the intermediate connector mainly by each pile crown
Blue disk is connected, and steel using amount is big, human weld's heavy workload, is connected when assembly using high-strength bolt, also can only manual fastening bolt,
Therefore about 1,000 yuan of each connector overall cost, quality of connection is also unstable by man's activity, and ring flange and connection bolt
Exposed anti-corrosion effect is poor outside, and service life is short.And prefabricated pile does not allow under Soft Clay, quicksand liquefaction geological condition
There is pile joint, affects the popularization and use of prefabricated pile, therefore mostly using the bored concrete pile of jointless cast in situs as pile foundation
Plinth, construction quality is unstable, at high cost, cast in situs not environmentally, concrete curing is long in time limit, long construction period, construction efficiency
It is low.
Summary of the invention
In order to compensate for the shortcomings of the prior art, the present invention provides a kind of strong bending resistances to be mechanically connected precast concrete beam stanchion
The anchor ear connector of bar, solves problems of the prior art.
The present invention is achieved through the following technical solutions:
A kind of anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar, the reinforcing sleeve being oppositely arranged including two
Hoop, fixedly connected to the inner side several reinforcing ribs in each reinforcement cuff；Horizontal interval is equipped with a positioning on each periphery for reinforcing cuff
Slot and a seal groove are equipped with stressed member in the locating slot, and sealing element is equipped in the seal groove；Reinforce outside cuff two
Side is arranged a jacket hoop, and the locating slot is corresponded on the jacket hoop inner sidewall equipped with a groove, is equipped with and wears in jacket hoop
The threaded fastener of the groove setting is crossed, the threaded fastener is used to the jacket hoop, stressed member abutting fixation together
In on the reinforcement cuff.
A sealing shroud is arranged on the outside of the jacket hoop, the sealing shroud length is not less than jacket hoop length.
The locating slot is an annular groove, and the seal groove is a ring recess, is set in the annular groove in the stress ring, described
Sealing ring is set in the ring recess.
The ring recess is O-ring slot.
The sealing shroud is seal rubber housing.
The stressed member is the stress ring being equipped with locating slot, and the sealing element is close to be equipped with seal groove
Seal；The stress ring includes the multistage being continuously arranged along reinforcement cuff circumferential direction.
The threaded fastener is positioning bolt, and the positioning bolt includes continuously being arranged along reinforcement cuff circumferential direction
It is multiple.
The reinforcing rib is spiral, and spiral is arranged along cuff circumferential direction uniform intervals are reinforced；In each screw thread
Reinforcing bar fixedly connected to the inner side spiral arrangement of reinforcement；In each spiral and reinforce between on the inside of cuff and each spiral and it is solid
Fillet welding is welded between spiral arrangement of reinforcement even.
The reinforcement cuff, jacket hoop are round, rectangular or taper.
Structure glue is filled in the gap reinforced between cuff and jacket hoop.
Two sealing separation are greater than two positioning separation settings.
The reinforcement cuff and jacket hoop are isometric.
The groove is annular groove.
The opposite both ends for being set to each section of stress ring of the positioning bolt.
The thickness of the stress ring is not more than the depth of groove.
Application of the anchor ear connector in strong bending resistance mechanical connection precast concrete beam stanchion knock-off joint junction.
A kind of strong bending resistance is mechanically connected precast concrete beam stanchion knock-off joint connection structure, is two interconnected prefabricated
Anchor ear connector as described above is arranged in beams of concrete stanchion boom end；The sealing shroud fixing sleeve is set to two interconnected prefabricated
On concrete-pile beam column boom end lateral wall.
The manufacture craft of above-mentioned strong bending resistance mechanical connection precast concrete beam stanchion bar connection structure the following steps are included:
(1) the two of locating slot and seal groove will be machined with and reinforces the cuff screw thread with two beams of concrete stanchion boom ends respectively
Reinforcing bar muscle firm welding, and beams of concrete stanchion bar is manufactured into as required；
(2) by threaded fastener in jacket hoop, stress ring contraction is adjacent to across the threaded hole being set in jacket hoop
In groove on the inner wall of jacket hoop, and first horizontal through a beams of concrete stanchion bar, it is set on the beams of concrete stanchion bar；
(3) upper sleeve gasket is covered on another beams of concrete stanchion bar；
(4) end face with the two adjacent beam column built from concrete stake bars for reinforcing cuff is close together, is pacified on seal groove
Fill sealing ring；
(5) jacket hoop level is pulled to the joint of two beams of concrete stanchion bars, makes center and the coagulation of jacket hoop
The locating slot of cuff is reinforced in native beam column stake knock-off joint seam alignment, stress ring alignment；
(6) threaded fastener is rotated, pushing tow stress ring is close to reinforce the locating slot of cuff；
(7) a wherein threaded fastener is removed, the whole clearance cavity of pressure injecting structure glue filling out of threaded hole, then
Restore to install and screws the threaded fastener；
(8) sealing shroud is adjusted to two all covered at beams of concrete stanchion knock-off joint and reinforces cuff and jacket hoop, i.e.,
It can.
Beneficial effects of the present invention:
The anchor ear connector of the strong bending resistance mechanical connection precast concrete beam stanchion bar uses additional reinforcement anchor ear and its machine
Bending resistance at stake knock-off joint, tension, shearing resistance uniform force are assigned to and reinforce on anchor ear, so as to avoid stake by tool connection structure
Head place concrete because brittleness greatly, poor toughness due to lead to the mechanical properties decrease at pure concrete joint the problem of, substantially increase
The quality of connection and effect of beams of concrete stanchion bar class joint.Reinforce anchor ear using the stress ring for reinforcing cuff and its interior setting
And its structure for the jacket hoop being arranged outside, adjacent studs bar assembly after, interior injecting structure glue, eliminate part machining deviation and
Fit-up gap, so that each part stress is uniform.In addition, be arranged in the O-ring seal and stake bar that are arranged on reinforcing cuff
Sealing rubber cover is effectively guaranteed the mechanical connection anchor ear connector and is all isolated with outside air, rainwater, extends use
Service life is particularly suitable for by the sea, in the corrosive environments such as rain band humidity.The anchor ear connector avoids human weld's technological operation, matter
Amount is controllable, and mechanical connection is reliable, and labor intensity reduces, and antiseptic property is good, and rolled steel dosage is few, and product cost, construction cost are all
It substantially reduces.The anchor ear joint connection manner can also be applied to the beam column built from concrete class mechanical connection of assembled architecture, can make beam
Column end reinforcing bar no longer needs exposed docking；It is also suitable in the pile foundation engineering of various prefabricated piles, the pile crown of concrete precast pile
Docking, be particularly suitable for Soft Clay, quicksand liquefaction etc. under Complicated Geologic Conditions pile joint receive horizontal thrust, shearing and big curved
Occasion away from effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention 2；
Fig. 3 is part attachment structure schematic diagram in Fig. 2；
Fig. 4 is Fig. 3 side structure schematic view；
Fig. 5 is positioning bolt and stress ring attachment structure schematic diagram in Fig. 2.
In figure, 1 reinforces cuff, 2 reinforcing ribs, 3 annular grooves, 4 ring recess, 5 stress rings, 6 sealing rings, 7 jacket hoops, 8 screw threads for fastening
Part, 9 sealing shrouds, 10 spiral arrangements of reinforcement, 11 fillet welding, 12 beams of concrete stanchion bars, 13 grooves, 14 structure glues.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this hair
It is bright to be described in detail.
Embodiment 1
As shown in Figure 1, the strong bending resistance is mechanically connected the anchor ear connector of precast concrete beam stanchion bar, including two are oppositely arranged
Reinforcement cuff 1, fixedly connected to the inner side several reinforcing ribs 2 in each reinforcement cuff；The horizontal interval on each periphery for reinforcing cuff
Equipped with an annular groove 3 and a ring recess 4, cooperation is equipped with stress ring 5 in annular groove, and sealing ring 6 is equipped in ring recess；Reinforce cuff two
Outside is arranged a jacket hoop 7, and the stress ring is corresponded on the jacket hoop inner sidewall equipped with groove 13, is equipped in jacket hoop
Across the threaded fastener 8 of groove setting, the threaded fastener is used to together abut the jacket hoop, stress ring solid
Due on the reinforcement cuff；A sealing shroud 9 is arranged on the outside of the jacket hoop, the sealing shroud length is long not less than jacket hoop
Degree.
The ring recess 4 is O-ring slot.
The sealing shroud 9 is seal rubber housing.
The stress ring 5 includes the multistage being continuously arranged along reinforcement cuff circumferential direction.
The threaded fastener 8 is positioning bolt, and the positioning bolt includes continuously being arranged along reinforcement 1 circumferential direction of cuff
It is multiple.
The reinforcing rib 2 is spiral, and spiral is arranged along cuff circumferential direction uniform intervals are reinforced；In each screw thread
Reinforcing bar fixedly connected to the inner side spiral arrangement of reinforcement 10；Each spiral and reinforce cuff on the inside of between and each spiral and its
Fillet welding 11 is welded between connected spiral arrangement of reinforcement.
The reinforcement cuff 1, jacket hoop 7 are round, rectangular or taper.
Structure glue 14 is filled in the gap reinforced between cuff and jacket hoop.
Two ring recess, 4 spacing is arranged greater than two annular groove spacing；I.e. ring recess is provided on the outside of annular groove.
The reinforcement cuff and jacket hoop are isometric.
The positioning bolt is set to the both ends of each section of stress ring.
The thickness of the stress ring is not more than the depth of groove.
Above-mentioned reinforcement cuff, jacket hoop may be rectangular or taper.
Embodiment 2
As shown in Figure 2-5, a kind of strong bending resistance is mechanically connected precast concrete beam stanchion bar connection structure, is interconnected in two-phase
Anchor ear connector as described in Example 1 is arranged in 12 end of precast concrete beam stanchion bar connect；The sealing shroud seals fixing sleeve
On two interconnected precast concrete beam stanchion boom end lateral wall.
The anchor ear connector includes the two reinforcement cuffs 1 being oppositely arranged, and fixedly connected to the inner side several reinforcements in each reinforcement cuff
Muscle 2；Horizontal interval is equipped with an annular groove 3 and a ring recess 4 on each periphery for reinforcing cuff, and stress ring 5 is equipped in annular groove,
Sealing ring 6 is equipped in ring recess；A jacket hoop 7 is set in two reinforcement cuff outer sheaths, on the jacket hoop inner sidewall described in correspondence
Stress ring is equipped with groove 13, and the threaded fastener 8 being arranged across the groove is equipped in jacket hoop, and the threaded fastener is used
It is fixed on the reinforcement cuff in abutting the jacket hoop, stress ring together；A sealing is arranged on the outside of the jacket hoop
Set 9, the sealing shroud length are not less than jacket hoop length.
The ring recess 4 is O-ring slot.
The sealing shroud 9 is seal rubber housing.
The stress ring 5 includes the multistage being continuously arranged along reinforcement cuff circumferential direction.
The threaded fastener 8 is positioning bolt, and the positioning bolt includes continuously being arranged along reinforcement 1 circumferential direction of cuff
It is multiple.
The reinforcing rib 2 is spiral, and spiral is arranged along cuff circumferential direction uniform intervals are reinforced；In each screw thread
Reinforcing bar fixedly connected to the inner side spiral arrangement of reinforcement 10；Each spiral and reinforce cuff on the inside of between and each spiral and its
Fillet welding 11 is welded between connected spiral arrangement of reinforcement.
The reinforcement cuff 1, jacket hoop 7 are round, rectangular or taper.
Structure glue 14 is filled in the gap reinforced between cuff and jacket hoop.
Two ring recess, 4 spacing is arranged greater than two annular groove spacing.I.e. ring recess is provided on the outside of annular groove.
The reinforcement cuff and jacket hoop are isometric.
The positioning bolt is set to the both ends of each section of stress ring.
The thickness of the stress ring is not more than the depth of groove.
Construction manufacturing process:
1, the two of annular groove 3 and O-ring slot 4 will be machined with and reinforces the cuff screw thread with two beams of concrete stanchion boom ends respectively
Reinforcing bar muscle firm welding, and beams of concrete stanchion bar is manufactured into as required, it such as pours and solid pile or hollow pile is made；
2, in jacket hoop 7 through 8 positioning bolt of threaded fastener, across the threaded hole being set in jacket hoop by stress ring
5 shrink in the groove 13 being adjacent on the inner wall of jacket hoop, and are first set in the coagulation horizontal through a beams of concrete stanchion bar 12
On native beam column stake boom end；
3, upper elastic seal rubber housing (such as oversleeve) is covered again on another beams of concrete stanchion bar；
4, the end face with the two adjacent beam column built from concrete stake bars 12 for reinforcing cuff 1 is close together, is O in ring recess 4
O-shaped rubber seal is installed on type ring recess；
5,7 level of jacket hoop is pulled to the joint of two beams of concrete stanchion bars, the center of jacket hoop 7 and concrete
The annular groove 3 of cuff 1 is reinforced in the seam alignment of beam column stake knock-off joint, the alignment of stress ring 5；
6, rotational positioning bolt, pushing tow stress ring 5 are close in the annular groove 3 for reinforcing cuff 1；
7, a wherein positioning bolt is removed, pressure injecting structure glue 14 fills whole clearance cavities out of threaded hole,
Restore to install and screw this positioning bolt 5 again；
8, seal rubber housing is adjusted to all cover two reinforcement cuffs 1 and housing at beams of concrete stanchion knock-off joint
Hoop 7.
Above-mentioned specific embodiment cannot function as limiting the scope of the invention, for the technology people of the art
For member, any alternate modification or transformation made to embodiment of the present invention are fallen within the scope of protection of the present invention.
Place is not described in detail by the present invention, is the well-known technique of those skilled in the art of the present technique.
Claims (10)
1. a kind of anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar, which is characterized in that set relatively including two
The reinforcement cuff set fixedly connected to the inner side several reinforcing ribs in each reinforcement cuff；The horizontal interval on each periphery for reinforcing cuff
Equipped with a positioning groove and a seal groove, it is equipped with stressed member in the locating slot, sealing element is equipped in the seal groove；Two
Reinforce cuff outer sheath and set a jacket hoop, the locating slot is corresponded on the jacket hoop inner sidewall equipped with a groove, in housing
Hoop is equipped with the threaded fastener being arranged across the groove, and the threaded fastener is used for the jacket hoop, stressed member one
It is fixed on the reinforcement cuff with abutting.
2. the anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar according to claim 1, feature exist
In being also arranged a sealing shroud on the outside of the jacket hoop, the sealing shroud length is not less than jacket hoop length.
3. the anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar according to claim 1, feature exist
In the sealing shroud is seal rubber housing.
4. the anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar according to claim 1, feature exist
In the stressed member is the stress ring being equipped with locating slot, and the sealing element is the sealing ring being equipped with seal groove；
The stress ring includes the multistage being continuously arranged along reinforcement cuff circumferential direction.
5. the anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar according to claim 1, feature exist
In, the threaded fastener be positioning bolt, the positioning bolt include along reinforce cuff circumferential direction be continuously arranged it is multiple.
6. the anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar according to claim 1, feature exist
In the reinforcing rib is spiral, and spiral is arranged along cuff circumferential direction uniform intervals are reinforced；In each spiral
Side is connected spiral arrangement of reinforcement；In each spiral and reinforce the screw-thread steel that between cuff and each spiral is connected with it
Fillet welding is welded between muscle arrangement of reinforcement.
7. the anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar according to claim 1, feature exist
In filled with structure glue in the gap reinforced between cuff and jacket hoop.
8. the anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar according to claim 1, feature exist
In two sealing separation are greater than two positioning separation settings.
9. the anchor ear connector of strong bending resistance mechanical connection precast concrete beam stanchion bar according to claim 1, feature exist
In the reinforcement cuff and jacket hoop are isometric.
10. a kind of strong bending resistance is mechanically connected precast concrete beam stanchion knock-off joint connection structure, which is characterized in that interconnected in two-phase
Anchor ear connector as claimed in any one of claims 1-9 wherein is arranged in the precast concrete beam stanchion boom end connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083352.0A CN109989487B (en) | 2019-01-28 | 2019-01-28 | Anchor ear joint for strong bending-resistant mechanical connection precast concrete beam column pile pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910083352.0A CN109989487B (en) | 2019-01-28 | 2019-01-28 | Anchor ear joint for strong bending-resistant mechanical connection precast concrete beam column pile pole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109989487A true CN109989487A (en) | 2019-07-09 |
| CN109989487B CN109989487B (en) | 2024-03-01 |
Family
ID=67129274
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910083352.0A Active CN109989487B (en) | 2019-01-28 | 2019-01-28 | Anchor ear joint for strong bending-resistant mechanical connection precast concrete beam column pile pole |
Country Status (1)
| Country | Link |
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| CN (1) | CN109989487B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359828A (en) * | 2020-11-23 | 2021-02-12 | 富强科技股份有限公司 | Concrete pipe pile extension device |
| CN113981809A (en) * | 2020-06-28 | 2022-01-28 | 周兆弟 | Tramcar roadbed structure and construction method |
| CN114016395A (en) * | 2021-11-01 | 2022-02-08 | 安徽省交通规划设计研究总院股份有限公司 | Rapid building system and construction method for bridge substructure |
| CN116432282A (en) * | 2023-03-29 | 2023-07-14 | 金陵科技学院 | Design method of quick-release mortise and tenon type bolting precast beam column node of controllable plastic hinge |
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| CN209941909U (en) * | 2019-01-28 | 2020-01-14 | 南京钜力智能制造技术研究院有限公司 | Anchor ear joint and joint connection structure of strong bending resistance precast concrete beam column pile rod |
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| KR20130090450A (en) * | 2012-02-06 | 2013-08-14 | 주식회사 장평건설 | Joint structure of circular column and beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113981809A (en) * | 2020-06-28 | 2022-01-28 | 周兆弟 | Tramcar roadbed structure and construction method |
| CN112359828A (en) * | 2020-11-23 | 2021-02-12 | 富强科技股份有限公司 | Concrete pipe pile extension device |
| CN114016395A (en) * | 2021-11-01 | 2022-02-08 | 安徽省交通规划设计研究总院股份有限公司 | Rapid building system and construction method for bridge substructure |
| CN116432282A (en) * | 2023-03-29 | 2023-07-14 | 金陵科技学院 | Design method of quick-release mortise and tenon type bolting precast beam column node of controllable plastic hinge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109989487B (en) | 2024-03-01 |
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