CN208105021U - Novel embedded mild steel has the concrete pier of steel tube for restoring function - Google Patents
Novel embedded mild steel has the concrete pier of steel tube for restoring function Download PDFInfo
- Publication number
- CN208105021U CN208105021U CN201820288800.1U CN201820288800U CN208105021U CN 208105021 U CN208105021 U CN 208105021U CN 201820288800 U CN201820288800 U CN 201820288800U CN 208105021 U CN208105021 U CN 208105021U
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- interconnecting piece
- column
- mild steel
- cross
- inner core
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Abstract
The utility model provides a kind of concrete pier of steel tube with recovery function of novel embedded mild steel, it is characterised in that including replacement column, persistently uses column；It is described replacement column include be set to it is described persistently using column upper end first replace column and be set to it is described persistently using column lower end second replacement column；The first replacement column, second replace the ductility concrete filled steel tube that column includes outer wall round steel pipe, is set to the anti-buckling mild steel inner core of cross inside outer wall round steel pipe along central axis direction and wraps up the anti-buckling mild steel inner core of the cross and be set to inside outer wall round steel pipe；Can realize using the technical program makes that bridge pier energy dissipation capacity is stronger, anti-seismic performance is more excellent.
Description
Technical field
The utility model relates to field of civil engineering, in particular to a kind of steel with recovery function of novel embedded mild steel
Pipe concrete bridge pier.
Background technique
Nowadays, as the rapid development of China's economy is with economic development, infrastructure construction quantity is very huge,
Many highway bridges mostly use reinforced concrete hollow shear wall form.Domestic and international many times earthquake all shows bridge structure conduct
Important component in transportation lifeline is significant to first aid after calamity and restoration and reconstruction.Bridge pier is the main load-bearing of bridge
Structure carries vertical load and horizontal loading that superstructure transmits.For general bridge, shock resistance of the bridge pier to full-bridge
Control action can be played, is the primary component part for guaranteeing bridge security.Traditional gate-type bridge pier mostly uses reinforced concrete structure
Form, armored concrete gate-type bridge pier is from great, ductility is poor, and difficulty of construction is big, long construction period, and it is big, at high cost to repair difficulty.
(U.S.'s Luo Mapuli Etard (Loma Prieta) earthquake, 1994 in 1989 of ruinous earthquake several times of last century the nineties
Year U.S. Bei Ling (Northrige) earthquake, nineteen ninety-five the big earthquakes in Osaka and Kobe,Japan, U.S. Sheng Feinanduo (San in 1997
Fernado) earthquake, TaiWan, China Chi-Chi Earthquake in 1999) and beginning of this century China's Wenchuan earthquake, Yushu district, Qinghai earthquake,
Serious destruction is caused to local bridge structure, leads to huge life and property loss.Due to the uncertain of earthquake and again
Polygamy, building cause to be difficult to repair often by the geological process for surmounting fortification intensity, have seriously affected the normal life of people
It is living, meanwhile, a large amount of costs for repairing bring very long downtime and reparation cause the huge economic loss of society.
Bridge belongs to the structure of " top-heavy ", and most of mass concentration is in superstructure.Under geological process, due to upper
Intensity, the rigidity of portion's structure are all sufficiently large, and also relatively preferably, in past all previous earthquake, superstructure is seldom straight for ductile performance
Connect destruction.Compared with superstructure, lower part bridge pier structure is easier damage and failure.At this stage, China mainly uses reinforced concrete
Native bridge pier, this pier stiffness, intensity are larger, but its ductility, energy dissipation capacity are poor, all show one in all previous violent earthquake
Fixed vulnerability.Domestic and international all previous earthquake experience have shown that, serious damage of lower rebar concrete bridge pier structure is to cause bridge
Collapse, and is difficult to the main reason for repairing use after shake.
Utility model content
The purpose of the utility model is to overcome above-mentioned deficiencies in the prior art, provide a kind of tool of novel embedded mild steel
There is the concrete pier of steel tube for restoring function, makes that bridge pier energy dissipation capacity is stronger, anti-seismic performance is more excellent；And can realize shake after quickly
The anti-seismic performance of detecting appraisal bridge pier, the shock resistance of rapid renovation reinforced concrete filled steel tube bridge pier.
In order to solve the above-mentioned technical problem, the utility model provides a kind of having for novel embedded mild steel and restores function
Concrete pier of steel tube, including replace column, persistently use column；The replacement column include be set to it is described persistently using column upper end
First replaces column and is set to described persistently using the second replacement column of column lower end；
The first replacement column, the second replacement column include outer wall round steel pipe, are set to outer wall round steel pipe along central axis direction
The internal anti-buckling mild steel inner core of cross and the anti-buckling mild steel inner core of the package cross are simultaneously set to outer wall round steel pipe
Internal ductility concrete filled steel tube；The anti-buckling mild steel inner core of cross is cross perpendicular to the cross section of central axis；Institute
The both ends for stating the first replacement column are respectively welded interconnecting piece on first, the first lower interconnecting piece, the both ends point of the second replacement column
It is not welded with interconnecting piece on second, the second lower interconnecting piece；It is described to be persistently also welded with interconnecting piece in third, using the both ends of column
Three lower interconnecting pieces；
It is described first replacement column and second replacement column in the anti-buckling mild steel inner core of cross both ends respectively with first on
Interconnecting piece, the first lower interconnecting piece, interconnecting piece, the second lower interconnecting piece connection on second；The anti-buckling mild steel inner core of cross is not
It is contacted with the outer wall round steel pipe；The anti-buckling mild steel inner core of cross in the first replacement column is along far from the second replacement column side
To the detection column for partially exposing to the outer wall round steel pipe is provided with, for evaluating shake rear abutment anti-seismic performance；On described first
Interconnecting piece is set to the one end of the detection column far from the second replacement column；The detection column includes laterally detecting column and longitudinal direction
Detect column；The front and back two sides of the laterally detection column and the left and right two sides of longitudinal detection column are provided with the cross perpendicular to central axis
To ribbed stiffener, the front and back two sides of the laterally detection column and the left and right two sides of longitudinal detection column are evenly arranged in multiple be parallel to
The longitudinal stiffener of mandrel；First lower interconnecting piece is detachably connected with interconnecting piece in the third, on described second interconnecting piece and
Interconnecting piece is detachably connected under the third；
The anti-buckling mild steel core surface of cross is covered with anti-stick conjunctiva, for eliminating in the anti-buckling mild steel of cross
Core is cohered with ductility concrete filled steel tube.
In a preferred embodiment, the cross of the setting quantity of the transverse stiffener and longitudinal stiffener and the replacement column
Sectional dimension and radius-thickness ratio are directly proportional.
In a preferred embodiment, the both ends point of the first replacement column and the anti-buckling mild steel inner core in the second replacement column
Not with first on interconnecting piece, the first lower interconnecting piece, interconnecting piece, the second lower interconnecting piece are welded to connect on second.
In a preferred embodiment, the anti-stick conjunctiva is specially polychloroethylene film.
In a preferred embodiment, interconnecting piece on described first, the first lower interconnecting piece, connect on second under interconnecting piece, second
Interconnecting piece is connecting plate under interconnecting piece, third in socket part, third；The connecting plate being mutually detachably connected is uniformly arranged in the circumferential direction
There is bolt hole, is detachably connected between the connecting plate by high-strength bolt.
It in a preferred embodiment, further include bridge and pedestal；Interconnecting piece is arranged close to bridge on described first, and described
Bridge passes through interconnecting piece in bridge connector connection described first；Interconnecting piece is arranged close to pedestal under the third；And the bottom
Seat connects interconnecting piece under the third by base connector.
In a preferred embodiment, the bridge connector and base connector are specially connecting plate, the bridge connection
Part and base connector respectively with first under interconnecting piece and third interconnecting piece be detachably connected by high-strength bolt.
In a preferred embodiment, the height of outer wall round steel pipe is the 1.0 to 1.2 of ductility concrete filled steel tube cross-sectional diameter
Times.
In a preferred embodiment, described the use of column includes persistently main outer wall round steel pipe, along central axis direction be set to institute
It states the "-" type steel plate inner core inside main outer wall round steel pipe and the package "-" type steel plate inner core and is set to main outer wall circle
The common steel tube concrete of steel duct；The "-" type steel plate inner core is specially that the linear type that cross section is linear type is anti-buckling
Mild steel inner core.
Compared to the prior art, the technical solution of the utility model has following beneficial effect：
1. there is outside bending deformation trend when bridge pier being made to be under pressure by setting cross anti-buckling mild steel inner core, but
Its outside bending deformation is limited by concrete filled steel tube again；When replacing column receiving pulling force, the anti-buckling mild steel inner core of cross
It extends and is disengaged with concrete, inner concrete drawing crack will not be caused, when replacing column receiving pressure, the anti-buckling mild steel of cross
Inner core and the common stress of concrete.Therefore, the energy dissipation capacity of such embedded cross mild steel plate concrete filled steel tube bridge pier is strong, resists
Shock stability is excellent, and simple structure is reasonable, power transmission is clear, good economical benefit.
2. by the way that anti-stick conjunctiva is arranged in the anti-buckling mild steel core surface of cross, when making to replace column receiving pulling force, more preferably
The anti-buckling mild steel inner core of elimination cross and concrete filled steel tube between cohere.
3. by setting detection column make maintenance personnel can after shake quick detecting appraisal concrete filled steel tube bridge pier resist
Shock stability, the shock resistance of rapid renovation reinforced concrete filled steel tube bridge pier, it is ensured that the bridge as lifeline engineering keeps smooth
It is logical, there is most important effect to emergency relief after shake and post-disaster reconstruction.
4. each component of concrete filled steel tube bridge pier, including the anti-buckling mild steel inner core of cross, connecting plate, transverse stiffener,
Longitudinal stiffener only can need to lift in processing and fabricating, scene in factory.Possibly even using round steel pipe outer wall as template scene
It pours.The section big for Forecast of Urban Traffic Flow can substantially shorten the traffic control time using this concrete filled steel tube bridge pier,
Road rehabilitation speed after earthquake and burst accident can be greatly speeded up, the construction period is short, quick construction.
Detailed description of the invention
Fig. 1 is the concrete pier of steel tube with recovery function of novel embedded mild steel in the preferred embodiment in the utility model
Overall structure diagram；
Fig. 2 is the concrete pier of steel tube with recovery function of novel embedded mild steel in the preferred embodiment in the utility model
Detect column top view；
Fig. 3 is the concrete pier of steel tube with recovery function of novel embedded mild steel in the preferred embodiment in the utility model
Detect column main view；
Fig. 4 is the concrete pier of steel tube with recovery function of novel embedded mild steel in the preferred embodiment in the utility model
Replace sectional view of the column on 1-1 section；
Fig. 5 is the concrete pier of steel tube with recovery function of novel embedded mild steel in the preferred embodiment in the utility model
Persistently use sectional view of the column on 2-2 section.
Specific embodiment
The utility model is described further below in conjunction with the drawings and specific embodiments.
A kind of concrete pier of steel tube with recovery function of novel embedded mild steel, including replace column, persistently use column
3；The replacement column includes being set to described persistently to replace column 1 using the first of 3 upper end of column and be set to described persistently using column 3
Second replacement column 2 of lower end；When an earthquake occurs, replacement column bears earthquake bring pressure and drawing as main stressed member
Power is convenient for changing when replacement column is impaired as the impaired component that takes the lead in, implements rebuilding in disaster-hit areas in time.
It is as described below to replace column primary structure：It is described first replacement column 1, second replace column 2 include outer wall round steel pipe 13,
23, the anti-buckling mild steel inner core 11,21 of the cross inside outer wall round steel pipe 13,23 and package institute are set to along central axis direction
The ductility concrete filled steel tube 12,22 stating the anti-buckling mild steel inner core 11,21 of cross and being set to inside outer wall round steel pipe 13,23；
The anti-buckling mild steel inner core 11,21 of cross is cross perpendicular to the cross section of central axis；The outer wall round steel pipe 13,23
Height be ductility concrete filled steel tube 12,1.0 to 1.2 times of 22 cross-sectional diameters.For the company for replacing column with persistently using column 3
It connects, the both ends of the first replacement column 1 are respectively welded the lower interconnecting piece 16 of interconnecting piece 15, first on first, second replacement
The both ends of column 2 are respectively welded the lower interconnecting piece 25 of interconnecting piece 24, second on second；It is described persistently also to be welded using the both ends of column 3
There is in third interconnecting piece 35 under interconnecting piece 34, third.By be arranged the anti-buckling mild steel inner core 11,21 of cross, make bridge pier by
There is outside bending deformation trend when pressure, but its outside bending deformation is limited by concrete filled steel tube again；When replacement column is born
When pulling force, the anti-buckling elongation of mild steel inner core 11,21 of cross is simultaneously disengaged with concrete, will not cause inner concrete drawing crack, when
When replacing column receiving pressure, the anti-buckling mild steel inner core 11,21 of cross and the common stress of concrete.Therefore, such embedded cross
The energy dissipation capacity of shape mild steel plate concrete filled steel tube bridge pier is strong, excellent earthquake resistance, and simple structure is reasonable, power transmission is clear, warp
Effect of helping is good.
It is persistently as described below using 3 primary structure of column：Described includes persistently main outer wall round steel pipe 33, along center using column 3
Axis direction is set in the "-" type steel plate inner core 31 inside the main outer wall round steel pipe 33 and the package "-" type steel plate
Core 31 and the common steel tube concrete 32 being set to inside main outer wall round steel pipe 33；The "-" type steel plate inner core 31 is specially cross
Section is the anti-buckling mild steel inner core of linear type of linear type.
It replaces column and is persistently using the connection relationship between column 3：In the first replacement column 1 and the second replacement column 2
The both ends of the anti-buckling mild steel inner core 11,21 of cross respectively with first on connect on the lower interconnecting piece 16, second of interconnecting piece 15, first
The lower interconnecting piece 25 in portion 24, second connects；The anti-buckling mild steel inner core 11,21 of cross not with the outer wall round steel pipe 13,23
Contact；It is described first replacement column 1 and second replacement column 2 in anti-buckling mild steel inner core both ends respectively with first on interconnecting piece
15, the lower interconnecting piece 25 of interconnecting piece 24, second is welded to connect on the first lower interconnecting piece 16, second.
In order to realize the anti-seismic performance of rapid evaluation round steel pipe bridge pier after shake, the cross in the first replacement column 1 is anti-
Buckling mild steel inner core 11,21 is provided with the inspection that part exposes to the outer wall round steel pipe 13,23 along far from the second replacement 2 direction of column
Column 14 is surveyed, for evaluating shake rear abutment anti-seismic performance；Interconnecting piece 15 is set to the detection column 14 far from described on described first
One end of second replacement column 2；The detection column 14 includes that laterally column 141 is detected in detection column 142 and longitudinal direction；The laterally detection column
142 front and back two sides and the left and right two sides of longitudinal detection column 141 are provided with the transverse stiffener 143 perpendicular to central axis, institute
The left and right two sides for stating the laterally front and back two sides of detection column 142 and longitudinal detection column 141, which is evenly arranged with, multiple is parallel to central axis
Longitudinal stiffener 144；The setting quantity of the transverse stiffener 143 and longitudinal stiffener 144 is transversal with the replacement column
Face size and radius-thickness ratio are directly proportional.First lower interconnecting piece 16 is detachably connected with interconnecting piece 34 in the third, on described second
Interconnecting piece 24 is detachably connected with interconnecting piece 35 under the third.Make maintenance personnel can be after shake fastly by setting detection column 14
The anti-seismic performance of fast detecting appraisal concrete filled steel tube bridge pier, the shock resistance of rapid renovation reinforced concrete filled steel tube bridge pier,
Ensure that the bridge 4 as lifeline engineering is kept unimpeded, there is most important effect to emergency relief after shake and post-disaster reconstruction.
In order to preferably eliminate cohering between the anti-buckling mild steel inner core 11,21 of cross and concrete filled steel tube, described ten
The anti-buckling mild steel inner core 11 of font, 21 surfaces are covered with anti-stick conjunctiva.Specifically, the anti-stick conjunctiva is specially polyvinyl chloride
Film also can be used the anti-stick conjunctiva of other types and replace, belongs to simple replacement, this does not limit the scope of protection of the present invention.
In order to facilitate dismantling and rebuilding after bridge pier assembling and calamity, specifically, on described first interconnecting piece 15, first is lower is connected
The lower interconnecting piece 25 of interconnecting piece 24, second in portion 16, second, interconnecting piece 35 is connecting plate under interconnecting piece 34, third in third；Phase
The connecting plate being mutually detachably connected has been uniformly arranged in the circumferential direction bolt hole, is detachably connected between the connecting plate by high-strength bolt
It connects.
Complete bridge pier further includes bridge 4 and pedestal 5；Interconnecting piece 15 is arranged close to bridge 4 on described first, and the bridge
Beam 4 connects interconnecting piece 15 on described first by bridge connector 41；Interconnecting piece 35 is arranged close to pedestal 5 under the third；And
The pedestal 5 connects interconnecting piece 35 under the third by base connector 51.It is connect for convenience with replacement column, the bridge
It is also connecting plate that connector 41 and base connector 51 be specific, and the bridge connector 41 and base connector 51 are respectively with first
Interconnecting piece 35 is detachably connected by high-strength bolt under upper interconnecting piece 15 and third.
Above-mentioned a variety of components, including the anti-buckling mild steel inner core 11 of cross, 21, "-" type steel plate inner core 31, connecting plate, cross
It only can need to lift in processing and fabricating, scene in factory to ribbed stiffener 143, longitudinal stiffener 144.Possibly even with round steel pipe
Outer wall, main outer wall round steel pipe 33 are template cast in situs.The section big for Forecast of Urban Traffic Flow, using this concrete filled steel tube
Bridge pier can substantially shorten the traffic control time, the road rehabilitation speed after can also greatly speeding up earthquake and burst accident, construction
Short time limit, quick construction.
The preferable specific embodiment of the above, only the utility model, but the design concept of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, utilizes this design
The change that unsubstantiality is carried out to the utility model belongs to the behavior for invading scope of protection of the utility model.
Claims (9)
1. a kind of novel embedded mild steel has the concrete pier of steel tube for restoring function, it is characterised in that including replacement column, hold
It is continuous to use column；The replacement column include be set to it is described persistently replace column using the first of column upper end and be set to described persistently make
Column is replaced with the second of column lower end；
The first replacement column, the second replacement column include outer wall round steel pipe, are set to inside outer wall round steel pipe along central axis direction
The anti-buckling mild steel inner core of cross and the anti-buckling mild steel inner core of the package cross and be set to inside outer wall round steel pipe
Ductility concrete filled steel tube；The anti-buckling mild steel inner core of cross is cross perpendicular to the cross section of central axis；Described
The both ends of one replacement column are respectively welded interconnecting piece on first, the first lower interconnecting piece, and the both ends of the second replacement column are welded respectively
It is connected to interconnecting piece on second, the second lower interconnecting piece；It is described to be persistently also welded under interconnecting piece in third, third using the both ends of column
Interconnecting piece；
It is described first replacement column and second replacement column in the anti-buckling mild steel inner core of cross both ends respectively with first on connect
Portion, the first lower interconnecting piece, interconnecting piece, the second lower interconnecting piece connection on second；The anti-buckling mild steel inner core of cross not with institute
State the contact of outer wall round steel pipe；The anti-buckling mild steel inner core of cross in the first replacement column is set along far from the second replacement column direction
It is equipped with the detection column that part exposes to the outer wall round steel pipe, for evaluating shake rear abutment anti-seismic performance；It is connected on described first
Portion is set to the one end of the detection column far from the second replacement column；The detection column includes laterally detection column and longitudinal detection
Column；The front and back two sides of the laterally detection column and the left and right two sides of longitudinal detection column are provided with the transverse direction perpendicular to central axis and add
Strength rib, the front and back two sides of the laterally detection column and the left and right two sides of longitudinal detection column, which are evenly arranged with, multiple is parallel to central axis
Longitudinal stiffener；First lower interconnecting piece is detachably connected with interconnecting piece in the third, on described second interconnecting piece with it is described
Interconnecting piece is detachably connected under third；
The anti-buckling mild steel core surface of cross is covered with anti-stick conjunctiva, for eliminate the anti-buckling mild steel inner core of cross with
Ductility concrete filled steel tube coheres.
2. novel embedded mild steel according to claim 1 has the concrete pier of steel tube for restoring function, feature exists
In the cross sectional dimensions and radius-thickness ratio of the setting quantity of the transverse stiffener and longitudinal stiffener and the replacement column are at just
Than.
3. novel embedded mild steel according to claim 1 has the concrete pier of steel tube for restoring function, feature exists
In, it is described first replacement column and second replacement column in anti-buckling mild steel inner core both ends respectively with first on interconnecting piece, first
Lower interconnecting piece, interconnecting piece, the second lower interconnecting piece are welded to connect on second.
4. novel embedded mild steel according to claim 1 has the concrete pier of steel tube for restoring function, feature exists
In the anti-stick conjunctiva is specially polychloroethylene film.
5. novel embedded mild steel according to claim 1 has the concrete pier of steel tube for restoring function, feature exists
In interconnecting piece, third in interconnecting piece on, interconnecting piece on described first, the first lower interconnecting piece, second, the second lower interconnecting piece, third
Lower interconnecting piece is connecting plate；The connecting plate being mutually detachably connected has been uniformly arranged in the circumferential direction bolt hole, the connecting plate it
Between be detachably connected by high-strength bolt.
6. novel embedded mild steel according to claim 5 has the concrete pier of steel tube for restoring function, feature exists
In further including bridge and pedestal；Interconnecting piece is arranged close to bridge on described first, and the bridge is connected by bridge connector
Interconnecting piece on described first；Interconnecting piece is arranged close to pedestal under the third；And the pedestal connects institute by base connector
State interconnecting piece under third.
7. novel embedded mild steel according to claim 6 has the concrete pier of steel tube for restoring function, feature exists
It is specially connecting plate in the bridge connector and base connector, the bridge connector and base connector are respectively with first
Interconnecting piece is detachably connected by high-strength bolt under upper interconnecting piece and third.
8. novel embedded mild steel according to claim 1 has the concrete pier of steel tube for restoring function, feature exists
In the height of outer wall round steel pipe is 1.0 to 1.2 times of ductility concrete filled steel tube cross-sectional diameter.
9. novel embedded mild steel according to claim 1 has the concrete pier of steel tube for restoring function, feature exists
In, it is described the use of column includes persistently main outer wall round steel pipe, along central axis direction be set to one inside the main outer wall round steel pipe
Font steel plate inner core and the common steel tube coagulation for wrapping up the "-" type steel plate inner core and being set to inside main outer wall round steel pipe
Soil；The "-" type steel plate inner core is specially the anti-buckling mild steel inner core of linear type that cross section is linear type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820288800.1U CN208105021U (en) | 2018-03-01 | 2018-03-01 | Novel embedded mild steel has the concrete pier of steel tube for restoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820288800.1U CN208105021U (en) | 2018-03-01 | 2018-03-01 | Novel embedded mild steel has the concrete pier of steel tube for restoring function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208105021U true CN208105021U (en) | 2018-11-16 |
Family
ID=64125163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820288800.1U Withdrawn - After Issue CN208105021U (en) | 2018-03-01 | 2018-03-01 | Novel embedded mild steel has the concrete pier of steel tube for restoring function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208105021U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221648A (en) * | 2018-03-01 | 2018-06-29 | 华侨大学 | The concrete pier of steel tube for having the function of to restore of novel embedded mild steel |
| CN110952440A (en) * | 2019-11-19 | 2020-04-03 | 东北大学 | Prefabricated section steel concrete and reinforced concrete spliced pier and construction process |
-
2018
- 2018-03-01 CN CN201820288800.1U patent/CN208105021U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221648A (en) * | 2018-03-01 | 2018-06-29 | 华侨大学 | The concrete pier of steel tube for having the function of to restore of novel embedded mild steel |
| CN110952440A (en) * | 2019-11-19 | 2020-04-03 | 东北大学 | Prefabricated section steel concrete and reinforced concrete spliced pier and construction process |
| CN110952440B (en) * | 2019-11-19 | 2021-06-15 | 东北大学 | Prefabricated section steel concrete and reinforced concrete spliced pier and construction process |
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