CN108130962A - A kind of band waves the assembly of shear wall structure of friction energy-dissipating horizontal joint - Google Patents

A kind of band waves the assembly of shear wall structure of friction energy-dissipating horizontal joint Download PDF

Info

Publication number
CN108130962A
CN108130962A CN201711480197.3A CN201711480197A CN108130962A CN 108130962 A CN108130962 A CN 108130962A CN 201711480197 A CN201711480197 A CN 201711480197A CN 108130962 A CN108130962 A CN 108130962A
Authority
CN
China
Prior art keywords
shear
force transmission
assembly
bolt hole
plate
Prior art date
Application number
CN201711480197.3A
Other languages
Chinese (zh)
Inventor
陈欣
徐正中
桂光红
Original Assignee
中国十七冶集团有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中国十七冶集团有限公司 filed Critical 中国十七冶集团有限公司
Priority to CN201711480197.3A priority Critical patent/CN108130962A/en
Publication of CN108130962A publication Critical patent/CN108130962A/en

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38Connections for building structures in general
    • E04B1/61Connections for building structures in general of slab-shaped building elements with each other
    • E04B1/6108Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
    • E04B1/612Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/56Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings

Abstract

The present invention proposes that a kind of band waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, and the end of the fabricated shear wall and middle part confining region stress are indulged muscle and be all connected by screw bolts by vertical muscle connecting plate, and distribution bar is vertically not connected to, and simplifies type of attachment;The stress of the shear wall indulges muscle bonding pad and reserves round bolt hole, the reserved connection force transmission element of lower part shear wall or basis, and oval bolt hole is reserved at the both ends that medial end portions connection force transmission element connects force transmission element with middle part, and middle part connects reserved circle bolt hole in the middle part of force transmission element;When shear wall and basis connection, the force transmission element both sides arrangement friction plate of oval bolt hole is reserved, controls bolt pretightening so that shear wall can rotate under lateral loads around lower central to consume energy, without horizontal sliding.The present invention improves the energy dissipation capacity of shear wall, has broken away from construction site wet construction, convenient for industrialized production and green installation, can be widely applied to prefabricated assembled concrete shear wall structure.

Description

A kind of band waves the assembly of shear wall structure of friction energy-dissipating horizontal joint
Technical field
The present invention relates to the assembly of shear wall structure that a kind of band waves friction energy-dissipating horizontal joint, belong to Structural Engineering technology Field.
Background technology
Prefabricated assembled shear wall structure refers to that the various components of structure include precast shear wall, precast beam, precast floor slab Be standardized production Deng in factory, then each prefabricated components are bolted at the construction field (site), be welded to connect or after pour The structure that concrete is formed by connecting.Assembly of shear wall structure is from heavy and light, and rigidity is small, and ductility is good, each prefabricated components industry metaplasia Production, manufacture craft can more common site concrete it is more fine, have and save that labour, construction speed is fast, is advantageously implemented and builds It builds the advantages that energy saving, convenient for industrialized production and mechanized construction, adapts to the developing direction of China's building industrialization.
The connection of horizontal joint is the key technology in precast shear wall structure between precast shear wall, currently used water Pouring concrete connection after carvel joint connection method mainly, this mode situ wet operation heavy workload, construction is complicated, and quality is difficult To ensure, it is unfavorable for energy conservation and environmental protection.Therefore prefabricated assembled shear wall structure needs to propose that more efficient efficiently horizontal joint connects Connect mode.
Under normal circumstances, less than cast-in-place shear wall structure, assembled is cut for the globality of assembly of shear wall structure and rigidity The anti-seismic performance of power wall construction is less than cast-in-place shear wall structure.Due to assembly of shear wall structure ago earthquake centre show not Good, people lack confidence to the anti-seismic performance of assembly of shear wall structure, and assembly of shear wall structure is in the building industry in China Middle application percentage is not very high.Energy-dissipating and shock-absorbing is applied to fabricated construction can reduce overall structure antidetonation demand, improve main body The anti-seismic performance of structure.
Invention content
To solve the above problems, the present invention provides the fabricated shear wall knots that a kind of band waves friction energy-dissipating horizontal joint Structure adapts to the characteristics of precast concrete is easy to industrialized production, avoids situ wet operation, can effectively improve shear wall Energy dissipation capacity.
The specific technical solution of the present invention is as follows:A kind of band waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, Including precast shear wall, basis or lower part shear wall, vertical muscle, vertical muscle connecting plate, end force transmission element, middle part force transmission element, interior friction Piece, bolt and outside friction disc;The precast shear wall is several vertical in common precast reinforced concrete shear wall middle preset Muscle, shear wall include end restraint area, middle part confining region and distributing reinforcement area;The end restraint area and middle part confining region lower end The vertical muscle connecting plate that socket U-shaped steel plate is welded into, vertical muscle connecting plate are securely welded with vertical muscle, the reinforcing bar cage type with precast shear wall It is integral;The basis or lower part shear wall is provided with corresponding with indulging muscle connecting plate pre-buried with precast shear wall link position End force transmission element and middle part force transmission element, force transmission element and basic internal reinforcement welding are secured;The end force transmission element, middle part power transmission Part connect fixation with vertical muscle connecting plate by inner attrition piece, bolt and outside friction disc.
Further, the end restraint area and middle part confining region arrangement of reinforcement are similar with common column, mainly there is vertical muscle and hoop Muscle;The distributing reinforcement area arrangement of reinforcement predominantly vertically and horizontally distribution bar.
Further, the vertical muscle connecting plate two sides steel plate reserves circular bolt holes, and connect with steel tube both sides spiral shell Keyhole, after the completion of shear wall is prefabricated, steel pipe can form the bolt duct of inside concrete;
Further, it is connectionless between the distributing reinforcement area and basis or lower part shear wall.
Further, the end force transmission element and middle part force transmission element are the steel plate for being provided with prepared screw-bolt hole, described End force transmission element reserves oval bolt hole;Oval bolt hole is reserved in the middle part force transmission element both sides, is reserved close to medium position Circle bolt hole.
Further, the basis or when lower part shear wall and precast shear wall assembly connection, end force transmission element and in The location arrangements that portion's force transmission element reserves oval bolt hole have inner attrition piece, and the inner attrition piece is located on the outside of vertical muscle connecting plate, The inside of end force transmission element and middle part force transmission element.
Further, the basis or lower part shear wall and during prefabricated shearing assembly connection, end force transmission element and middle part Force transmission element reserves the location arrangements outside friction disc of oval bolt hole, and the outside friction disc is located at end force transmission element and middle part power transmission The outside of part.
Further, the bolt passes through precast shear wall internal reservation bolt hole and each force transmission element, friction plate bolt Basis or lower part shear wall and precast shear wall assembly connection are formed entirety by hole.
Further, the inner attrition piece and outside friction disc can be simple metal, alloy, inorganic or organic new material system Into.
Compared with prior art, the present invention proposes that a kind of band waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, It has adapted to the characteristics of precast concrete is easy to industrialized production, it is entirely avoided situ wet operation;Assembled of the present invention The end of shear wall and middle part confining region stress are indulged muscle and are all connected by screw bolts by vertical muscle connecting plate, and distribution bar is vertically not Connection simplifies type of attachment;The stress of shear wall indulges muscle bonding pad and reserves round bolt hole, the reserved connection of lower part shear wall or basis Oval bolt hole, middle part connection force transmission element are reserved in force transmission element, the both ends that medial end portions connection force transmission element connects force transmission element with middle part Reserve round bolt hole in middle part;When shear wall and basis connection, the force transmission element both sides arrangement friction plate of oval bolt hole, control are reserved Bolt pretightening so that shear wall can rotate under lateral loads around lower central to consume energy, without horizontal sliding;This Invention improves the energy dissipation capacity of shear wall, can be widely applied to prefabricated assembled concrete shear wall structure.
Description of the drawings
Fig. 1 is the elevation of assembly of shear wall structure of the present invention;
Fig. 2 is the 1-1 sectional views of Fig. 1;
Fig. 3 is the stereogram of assembly of shear wall structure;
Fig. 4 is enlarged drawing at the A of Fig. 1;
In figure:1- precast shear walls, 2- bases or lower part shear wall, 3- end restraints area, 4- middle parts confining region, 5- distributions Muscle area, 6- indulge muscle, 7- indulges muscle connecting plate, outside 8- ends force transmission element, 9- bolts, 10- inner attrition pieces, 11- middle part force transmission element, 12- Friction plate.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment
The present invention mainly includes precast shear wall 1, basis or lower part shear wall 2, vertical muscle as shown in attached drawing 1, Fig. 3, Fig. 4 6th, muscle connecting plate 7, end force transmission element 8, middle part force transmission element 11, inner attrition piece 10, bolt 9 and outside friction disc 12 are indulged.
Precast shear wall 1 is in several vertical muscle of common precast reinforced concrete shear wall middle preset, forms middle part and constrains Area.As shown in Fig. 2, shear wall includes end restraint area 3, middle part confining region 4 and distributing reinforcement area (5);End restraint area 3 and middle part 4 arrangement of reinforcement of confining region is similar with common column, mainly there is vertical muscle 6 and stirrup;5 arrangement of reinforcement of distributing reinforcement area predominantly vertically and horizontally distribution bar.
The end restraint area 3 and 4 lower end of middle part confining region of precast shear wall 1 socket U-shaped steel plate when prefabricated are welded into Vertical muscle connecting plate 7 is indulged muscle connecting plate 7 and is securely welded with vertical muscle 6, entirety is formed with the steel reinforcement cage of precast shear wall (1).Vertical muscle 7 two sides steel plate of connecting plate reserves circular bolt holes, and connect with steel tube both sides bolt hole, after the completion of shear wall is prefabricated, steel pipe The bolt duct of inside concrete can be formed;Distributing reinforcement area 5 and infrastructure or lower part shear wall 2 are connectionless.
Basis or lower part shear wall 2 are the vertical Force transmission parts such as the precast shear wall of architecture basics or lower floor, basic Or the end force transmission element 8 corresponding with vertical muscle connecting plate pre-buried with 1 link position of precast shear wall of lower part shear wall 2 and middle part power transmission Part 11, it is secured with basic internal reinforcement welding, as top precast shear wall 1 into infrastructure or the transmission of lower part shear wall 2 The main connector of power.End force transmission element 8 and the steel plate that middle part force transmission element 11 is prepared screw-bolt hole, wherein, end force transmission element 8 Reserve oval bolt hole;Oval bolt hole is reserved in force transmission element 11 both sides in middle part, and round bolt hole, this kind are reserved close to medium position Bolt hole arrangement may be such that top precast shear wall 1 rotates around bottom centre without horizontal displacement.
During installation, basis or during 1 assembly connection of lower part shear wall 2 and precast shear wall, end force transmission element 8 and middle part pass Power part 11 reserves the location arrangements inner attrition piece 10 of oval bolt hole, and inner attrition piece 10 is located at vertical 7 outside of muscle connecting plate, and end passes The inside of power part 8 and middle part force transmission element 11.
During installation, basis or during 1 assembly connection of lower part shear wall 2 and precast shear wall, end force transmission element 8 and middle part pass Power part 11 reserves the location arrangements outside friction disc 12 of oval bolt hole, and outside friction disc 12 is located at end force transmission element 8 and middle part power transmission The outside of part 11.
In order to extend service using life, above-mentioned inner attrition piece 10 and outside friction disc 12 will select the material of friction energy-dissipating Material, optional simple metal, alloy, inorganic or organic new material are made.
In use, the spiral shell that bolt 9 is reserved by the bolt hole and each force transmission element, friction plate of 1 internal reservation of precast shear wall Basis or lower part shear wall 2 and 1 assembly connection of precast shear wall are formed entirety by keyhole, control bolt pretightening so that power transmission Relative sliding can occur between part and friction plate and consume energy.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention, the claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (9)

1. a kind of band waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, which is characterized in that including precast shear wall (1), basis or lower part shear wall (2), vertical muscle (6), vertical muscle connecting plate (7), end force transmission element (8), middle part force transmission element (11), interior Friction plate (10), bolt (9) and outside friction disc (12);The precast shear wall (1) is cut in common prefabricated reinforced concrete Several vertical muscle of power wall middle preset, shear wall include end restraint area (3), middle part confining region (4) and distributing reinforcement area (5);It is described End restraint area (3) and the vertical muscle connecting plate (7) that is welded into of middle part confining region (4) lower end socket U-shaped steel plate, indulge muscle connecting plate (7) it is securely welded with vertical muscle (6), entirety is formed with the steel reinforcement cage of precast shear wall (1);The basis or lower part shear wall (2) pre-buried end force transmission element (8) corresponding with indulging muscle connecting plate (7) and middle part are provided with precast shear wall (1) link position Force transmission element (11), force transmission element and basic internal reinforcement welding are secured;The end force transmission element (8), middle part force transmission element (11) with Vertical muscle connecting plate (7) is connected by inner attrition piece (10), bolt (9) and outside friction disc (12) to be fixed.
2. a kind of band according to claim 1 waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, feature exists In the end restraint area (3) and middle part confining region (4) arrangement of reinforcement are similar with common column, mainly there is vertical muscle (6) and stirrup;Institute Distributing reinforcement area (5) arrangement of reinforcement stated predominantly vertically and horizontally distribution bar.
3. a kind of band according to claim 1 waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, feature exists In vertical muscle connecting plate (7) the two sides steel plate reserves circular bolt holes, and connect with steel tube both sides bolt hole, shear wall After the completion of prefabricated, steel pipe can form the bolt duct of inside concrete.
4. a kind of band according to claim 1 waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, feature exists In connectionless between the distributing reinforcement area (5) and basis or lower part shear wall (2).
5. a kind of band according to claim 1 waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, feature exists In, the end force transmission element (8) and middle part force transmission element (11) be the steel plate for being provided with prepared screw-bolt hole, the end power transmission Part (8) reserves oval bolt hole;Oval bolt hole is reserved in described middle part force transmission element (11) both sides, and circle is reserved close to medium position Bolt hole.
6. a kind of band according to claim 1 and 5 waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, feature It is, when the basis or lower part shear wall (2) and precast shear wall (1) assembly connection, end force transmission element (8) and middle part pass The location arrangements that power part (11) reserves oval bolt hole have inner attrition piece (10), and the inner attrition piece (10) is connected positioned at vertical muscle On the outside of plate (7), the inside of end force transmission element (8) and middle part force transmission element (11).
7. a kind of band according to claim 1 and 5 waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, feature It is, when the basis or lower part shear wall (2) and precast shear wall (1) assembly connection, end force transmission element (8) and middle part pass Power part (11) reserves the location arrangements outside friction disc (12) of oval bolt hole, and the outside friction disc (12) is positioned at end force transmission element (8) and the outside of middle part force transmission element (11).
8. a kind of band according to claim 1 and 5 waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, feature It is, the bolt (9) is by precast shear wall (1) internal reservation bolt hole and each force transmission element, friction plate bolt hole by base Plinth or lower part shear wall (2) and precast shear wall (1) assembly connection form entirety.
9. a kind of band according to claim 1 waves the assembly of shear wall structure of friction energy-dissipating horizontal joint, feature exists It can be made in, the inner attrition piece (10) and outside friction disc (12) of simple metal, alloy, inorganic or organic new material.
CN201711480197.3A 2017-12-29 2017-12-29 A kind of band waves the assembly of shear wall structure of friction energy-dissipating horizontal joint CN108130962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711480197.3A CN108130962A (en) 2017-12-29 2017-12-29 A kind of band waves the assembly of shear wall structure of friction energy-dissipating horizontal joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711480197.3A CN108130962A (en) 2017-12-29 2017-12-29 A kind of band waves the assembly of shear wall structure of friction energy-dissipating horizontal joint

Publications (1)

Publication Number Publication Date
CN108130962A true CN108130962A (en) 2018-06-08

Family

ID=62393925

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711480197.3A CN108130962A (en) 2017-12-29 2017-12-29 A kind of band waves the assembly of shear wall structure of friction energy-dissipating horizontal joint

Country Status (1)

Country Link
CN (1) CN108130962A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108978891A (en) * 2018-07-04 2018-12-11 中国十七冶集团有限公司 A kind of fabricated shear wall vertical abutment joint energy consumption dry type connection structure and construction method
CN110344512A (en) * 2019-07-26 2019-10-18 谭士虎 A kind of precast reinforced concrete shear wall
CN110777970A (en) * 2019-11-14 2020-02-11 江苏科技大学 Friction energy consumption protection device for wall corner of swinging wall and swinging wall

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002088907A (en) * 2000-09-21 2002-03-27 Takenaka Komuten Co Ltd High-rise wall building
CN201436332U (en) * 2009-07-28 2010-04-07 宝山钢铁股份有限公司 Shearing wall with seamed steel plate connected on middle part by bolt
CN101851965A (en) * 2010-05-21 2010-10-06 北京时空筑诚建筑设计有限公司 Reinforced concrete sway wall, sway wall assembly and production method thereof
US20110197544A1 (en) * 2003-12-12 2011-08-18 Simpson Strong Tie Co., Inc. Corrugated shearwall
CN202627248U (en) * 2012-07-10 2012-12-26 同济大学 Shear wall structure with energy-consuming horizontal seam
CN103696509A (en) * 2014-01-05 2014-04-02 海南大学 Swinging shear wall
CN105756217A (en) * 2016-04-19 2016-07-13 同济大学 Steel and wood hybrid earthquake resistant wall with post-earthquake self reset function
CN206752741U (en) * 2017-05-10 2017-12-15 郑俊煌 A kind of vertical connecting node of prefabricated assembled shear wall

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002088907A (en) * 2000-09-21 2002-03-27 Takenaka Komuten Co Ltd High-rise wall building
US20110197544A1 (en) * 2003-12-12 2011-08-18 Simpson Strong Tie Co., Inc. Corrugated shearwall
CN201436332U (en) * 2009-07-28 2010-04-07 宝山钢铁股份有限公司 Shearing wall with seamed steel plate connected on middle part by bolt
CN101851965A (en) * 2010-05-21 2010-10-06 北京时空筑诚建筑设计有限公司 Reinforced concrete sway wall, sway wall assembly and production method thereof
CN202627248U (en) * 2012-07-10 2012-12-26 同济大学 Shear wall structure with energy-consuming horizontal seam
CN103696509A (en) * 2014-01-05 2014-04-02 海南大学 Swinging shear wall
CN105756217A (en) * 2016-04-19 2016-07-13 同济大学 Steel and wood hybrid earthquake resistant wall with post-earthquake self reset function
CN206752741U (en) * 2017-05-10 2017-12-15 郑俊煌 A kind of vertical connecting node of prefabricated assembled shear wall

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108978891A (en) * 2018-07-04 2018-12-11 中国十七冶集团有限公司 A kind of fabricated shear wall vertical abutment joint energy consumption dry type connection structure and construction method
CN110344512A (en) * 2019-07-26 2019-10-18 谭士虎 A kind of precast reinforced concrete shear wall
CN110777970A (en) * 2019-11-14 2020-02-11 江苏科技大学 Friction energy consumption protection device for wall corner of swinging wall and swinging wall

Similar Documents

Publication Publication Date Title
CN101798849B (en) Node connection device for self-centering prestressed concrete frame
KR100626542B1 (en) Hybrid Beam Structure Using Thin Steel Plate and Concrete
CN103572873B (en) Assembled integral floor and construction method thereof
CN102720272B (en) Embedded column type prefabricated part connection node and manufacturing method thereof
CN102808450A (en) Assembled monolithic shear wall building structure and construction method thereof
CN102220739B (en) Corrugated steel web prestressed concrete continuous box girder and construction method thereof
CN201991083U (en) Beam column node of composite structural system of steel and concrete
CN2784490Y (en) Prestress connection node for beam column of assembled concrete frame structure
CN202865991U (en) Assembled monolithic shear wall building structure
CN203866982U (en) Prefabricated beam end joint structure
CN103388408B (en) A kind of building structure external prestressing muscle reinforces steering block
CN101892710B (en) Structure node for steel girder and reinforced column and construction method thereof
US8511044B2 (en) Composite connection for a wind turbine tower structure
CN103195170A (en) Prefabricated reinforced concrete frame structure system
CN203961054U (en) A kind of combined connecting structure of fabricated shear wall plate
CN101215855A (en) Combination beam
CN204282543U (en) A kind of reinforced concrete beam and girder with rolled steel section en cased in concrete connecting joint structure
CN103924505B (en) Use prefabricated steel-concrete combination T beam and the construction method of Wavelike steel webplate
CN205134308U (en) Revolve and twist piling bar that creeps into
CN201915534U (en) Load-bearing composite slab for steel structural residence
CN105386405A (en) Precast segment assembled concrete filled steel tube bridge pier based on bolted connection
CN106088334B (en) A kind of huge steel pipe column abnormal shape combined joint of assembled and installation method
CN101818478B (en) Connection structure for concrete-filled circular steel tubular pier column and concrete cover beam
CN204152080U (en) Embedded outsourcing U-shaped steel-concrete composite beam
CN206090273U (en) Prefabricated UHPC of assembling of festival section wave form steel web combination box beam and cable -stay bridge

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20180608

WD01 Invention patent application deemed withdrawn after publication