CN110747751A - Connecting device for special-shaped steel arch rib and steel box girder and mounting method thereof - Google Patents
Connecting device for special-shaped steel arch rib and steel box girder and mounting method thereof Download PDFInfo
- Publication number
- CN110747751A CN110747751A CN201911151304.7A CN201911151304A CN110747751A CN 110747751 A CN110747751 A CN 110747751A CN 201911151304 A CN201911151304 A CN 201911151304A CN 110747751 A CN110747751 A CN 110747751A
- Authority
- CN
- China
- Prior art keywords
- box girder
- steel
- steel box
- arch rib
- type base
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 177
- 239000010959 steel Substances 0.000 title claims abstract description 177
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 14
- 230000008602 contraction Effects 0.000 claims abstract description 3
- 238000013461 design Methods 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 206010066054 Dysmorphism Diseases 0.000 claims 1
- 238000005266 casting Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 7
- 238000003466 welding Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
A connecting device and installation method for a special-shaped steel arch rib and a steel box girder, wherein the connecting device comprises a flange type base plate connected to the arch foot of the steel arch rib, the flange type base plate provides an installation plane for a bolt, and the bolt penetrates through the flange type base plate and is vertically connected with the steel box girder; the prestressed steel bundles and a plurality of diaphragm plates are arranged in the steel box girder, the prestressed steel bundles are horizontally arranged along the axial direction of the steel box girder, the diaphragm plates are arranged at intervals along the longitudinal direction of the steel box girder, and the internal space of the steel box girder is divided into a plurality of cells by the diaphragm plates; a plurality of shear nails are arranged on the inner wall of the steel box girder at intervals, and concrete is poured into the steel box girder for filling. The installation method of the invention ensures that the screw rod can transmit force to the steel box girder more uniformly, and the construction is easy. And finally, screwing the bolts by using a jack, so that the steel arch ribs and the steel box girder are reliably combined together, and after the installation is finished, the screwing degree of the bolts can be properly adjusted according to the contraction condition of concrete in the connecting section, so that the connection quality is ensured.
Description
Technical Field
The invention belongs to the field of bridge construction, and particularly relates to a connecting device of a special-shaped steel arch rib and a steel box girder and an installation method thereof.
Background
The main arch and main beam joint section is one of the most important stress components of the full bridge, the structure is complex, the connection relationship is more, the bending moment, the shearing force and the axial force transferred by the arch rib are born, the stress is very complex, and the design and the manufacture of the arch beam joint section are difficult points and control points of bridge construction. The connection of the steel arch rib and the steel main beam generally adopts a welding mode to connect the arch springing and the main beam together. For the arched girder combining section of the special-shaped arch rib, the arch rib is inclined and the section is irregular, so that the operation space is narrower, and the welding quality is difficult to ensure.
[1] Research on assembly welding technology of arched beam joint sections of large bridges in Chengchong Junbo mountain spring [ J. welding technology 2016,45(05): 156-.
[2] A steel arch tower erection technique for small Linghe bridge in Kyori, Jinzhou, bridge construction, 2013,42(04) and 81-86.
[3] Zhangyulingling, Ronghui, Kazakho-Seiko grand bridge arch foot model test research [ J ] steel structure, 2013.6:9-13.
Disclosure of Invention
The invention aims to solve the problem that the connection quality is difficult to ensure by adopting a welding mode of an arch foot and a main beam in the prior art, and provides a connecting device of a special-shaped steel arch rib and a steel box beam and an installation method thereof.
In order to achieve the purpose, the invention has the following technical scheme:
a connecting device for a special-shaped steel arch rib and a steel box girder comprises a flange-type base plate connected to the arch foot of the steel arch rib, wherein the flange-type base plate provides a mounting plane for a bolt, and the bolt penetrates through the flange-type base plate and is vertically connected with the steel box girder; the prestressed steel bundles and a plurality of diaphragm plates are arranged in the steel box girder, the prestressed steel bundles are horizontally arranged along the axial direction of the steel box girder, the diaphragm plates are arranged at intervals along the longitudinal direction of the steel box girder, and the internal space of the steel box girder is divided into a plurality of cells through the diaphragm plates; a plurality of shear nails are arranged on the inner wall of the steel box girder at intervals, and concrete is poured into the steel box girder for filling.
The flange type base plate extends to the inner side and the outer side of the steel arch rib along the surface of the steel box girder, and bolts are arranged on the inner side and the outer side.
And stiffening ribs for enhancing the overall performance of the arch springing are arranged on the flange type base plates between the bolts.
The bolt comprises a nut and a screw rod which are connected, a prefabricated connecting piece is arranged on a box girder bottom plate of the steel box girder, the screw rod penetrates through the inside of the steel box girder and is anchored with the prefabricated connecting piece, and the nut is positioned above the flange type base plate.
The total length of the cells divided by the diaphragm plates along the longitudinal direction of the steel box girder is not less than twice the longitudinal dimension of the section of the steel arch rib.
The flange-type backing plate and the arch springing of the steel arch rib are welded into a whole, and holes are formed at the positions through which the bolts pass.
The invention also discloses an installation method of the connecting device of the special-shaped steel arch rib and the steel box girder, which comprises the following steps:
prefabricating the steel box girder, wherein a plurality of diaphragm plates are preset in the steel box girder at positions corresponding to the arch springing, the internal space of the steel box girder is divided into a plurality of cells, and a plurality of shear nails are arranged on the inner wall of the steel box girder at intervals;
fixedly connecting the flange type base plate with the arch springing of the steel arch rib along the surface direction of the steel box girder;
forming holes in the flange type base plate and a box girder top plate of the steel box girder, enabling bolt holes formed in the flange type base plate to correspond to the box girder top plate one by one, and enabling bolts to penetrate through the flange type base plate and be vertically connected with the steel box girder;
horizontally arranging prestressed steel beams in the steel box girder along the axial direction of the steel box girder;
pouring concrete into the steel box girder so that the fixed end of the bolt is anchored in the concrete;
tensioning the prestressed steel beam when the strength of the concrete reaches the design strength;
and tightening the bolts to ensure that the steel arch rib and the steel box girder are reliably combined together.
In the process, firstly, the prefabricated connecting piece is arranged on the box girder bottom plate of the steel box girder, the screw rod of the bolt penetrates through the internal connection prefabricated connecting piece of the steel box girder to realize anchoring, and the bolt is screwed up secondarily after the installation according to the shrinkage condition of concrete.
Compared with the prior art, the connecting device for the special-shaped steel arch rib and the steel box girder has the following beneficial effects: the arch springing and the steel box girder are connected together by bolts, concrete is poured, the shear nails and the tension prestressed steel bundles are arranged, so that the joint section of the arch springing is stressed together, the integrity of the concrete and the steel box girder is enhanced by the shear nails, the stress performance of the joint section of the arch girder is enhanced by the prestressed steel bundles, the situation that only the box girder top plate participates in connection and stress at the traditional joint is avoided, the problems of stress concentration and warping of the top plate are prevented, and the stress safety of the joint section of the arch girder can be obviously improved. The safety and the reliability of the bridge in the construction and operation process are ensured.
Compared with the prior art, the installation method of the connecting device of the special-shaped steel arch rib and the steel box girder adopts the screw rods to connect the arch feet with the main girder, and the concrete is poured in the steel box girder to ensure that the screw rods transfer force to the steel box girder more uniformly, so that the construction is easy. And finally, the bolts are screwed up by using a jack, so that the steel arch ribs and the steel box girder are reliably combined together, and after the installation is finished, the screwing degree of the bolts can be properly adjusted according to the contraction condition of concrete in the connecting section, so that the adjustment is convenient, and the connecting quality is ensured.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic elevation view of a connecting device for a special-shaped steel arch rib and a steel box girder;
FIG. 2 is a schematic plan view of the connecting device for the special-shaped steel arch rib and the steel box girder;
FIG. 3 is a schematic cross-sectional view of the connecting device for the special-shaped steel arch rib and the steel box girder of the invention;
FIG. 4 is a schematic plan view of the flange type backing plate of the present invention;
FIG. 5 is a schematic view of the connection structure of the bolt of the present invention;
in the drawings: 1-a bolt; 2-prestressed steel bundles; 3-shear nails; 4-flange type backing plate; 5-a stiffening rib; 6-bolt hole; 7-a screw; 8-prefabricating a connecting piece; 9-steel arch rib; 10-diaphragm plate; 11-steel box girder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1-5, the connecting device for a special-shaped steel arch rib and a steel box girder comprises a flange type backing plate 4 welded on an arch foot of a steel arch rib 9, wherein the flange type backing plate 4 provides a mounting plane for a bolt 1, a hole is formed in the mounting position corresponding to the bolt 1, the flange type backing plate 4 extends to the inner side and the outer side of the steel arch rib 9 along the surface of the steel box girder 11, the bolt 1 is mounted on the inner side and the outer side, the bolt 1 penetrates through the flange type backing plate 4 to be vertically connected with the steel box girder 11, and a stiffening rib 5 is arranged on the flange type backing plate 4 between the bolts 1. The inside of steel box girder 11 sets up prestressing steel bundle 2 and a plurality of diaphragm plate 10, and prestressing steel bundle 2 arranges along the axial level of steel box girder 11, and diaphragm plate 10 arranges along the longitudinal interval of steel box girder 11, divides into a plurality of check room through diaphragm plate 10 with the inner space of steel box girder 11, and the longitudinal total length of check room along steel box girder 11 is not less than the longitudinal dimension of twice steel arch rib 9 cross-section. A plurality of shear nails 3 are arranged on the inner wall of the steel box girder 11 at intervals, and concrete is poured into the steel box girder 11 for filling. The bolt 1 comprises a nut and a screw rod 7 which are connected, a prefabricated connecting piece 8 is arranged on a box girder bottom plate of the steel box girder 11, the screw rod 7 penetrates through the inside of the steel box girder 11 and is anchored with the prefabricated connecting piece 8, and the nut is positioned above the flange type base plate 4.
The invention relates to an installation method of a connecting device of a special-shaped steel arch rib and a steel box girder, which comprises the following steps:
prefabricating a steel box girder 11, wherein a plurality of diaphragm plates 10 are preset in the steel box girder 11 at positions corresponding to arch feet, the inner space of the steel box girder 11 is divided into a plurality of cells, and a plurality of shear nails 3 are arranged on the inner wall of the steel box girder 11 at intervals;
fixedly connecting the flange-type base plate 4 with the arch springing of the steel arch rib 9 along the surface direction of the steel box girder 11;
holes are formed in the flange type base plate 4 and a box girder top plate of the steel box girder 11, bolt holes formed in the flange type base plate 4 correspond to bolt holes formed in the box girder top plate one by one, and the bolts 1 penetrate through the flange type base plate 4 to be vertically connected with the steel box girder 11;
horizontally arranging the prestressed steel beams 2 in the steel box girder 11 along the axial direction of the steel box girder 11;
arranging a prefabricated connecting piece 8 on a box girder bottom plate, enabling a screw 7 of the bolt 1 to penetrate through the interior of the steel box girder 11 to be connected with the prefabricated connecting piece 8, pouring concrete into the steel box girder 11, and anchoring the fixed end of the bolt 1 in the concrete;
when the strength of the concrete reaches the design strength, tensioning the prestressed steel beam 2 to enhance the stress performance of the arch beam combination section;
and screwing the bolt 1 by using a jack so as to reliably combine the steel arch rib 9 and the steel box girder 11.
After the installation is completed for two weeks, the bolts 1 can be fastened for a second time according to the shrinkage condition of the concrete in the box girder connecting section.
Compared with the traditional arch beam combination section, the device for connecting the special-shaped steel arch rib and the steel box beam adopts the bolts to connect the arch springs and the steel box beam together, combines with the poured concrete and sets the shear nails and the tension prestressed steel beams, so that the arch springing combination section is stressed together, the problems of top plate stress concentration and warping easily caused by the fact that only the box beam top plate participates in connection and stress in the traditional connection are avoided, the stress safety of the arch beam combination section can be obviously improved, and the safety and reliability of the bridge in the construction and operation processes are ensured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical solution of the present invention, and it should be understood by those skilled in the art that the technical solution can be modified and replaced by a plurality of simple modifications and replacements without departing from the spirit and principle of the present invention, and the modifications and replacements also fall within the protection scope defined by the claims.
Claims (8)
1. The utility model provides a dysmorphism steel arch rib and steel box girder connecting device which characterized in that: the steel box girder erection device comprises a flange type base plate (4) connected to arch feet of a steel arch rib (9), wherein the flange type base plate (4) provides an installation plane for a bolt (1), and the bolt (1) penetrates through the flange type base plate (4) to be vertically connected with a steel box girder (11); the prestressed steel bundles (2) and a plurality of transverse clapboards (10) are arranged inside the steel box girder (11), the prestressed steel bundles (2) are horizontally arranged along the axial direction of the steel box girder (11), the transverse clapboards (10) are arranged at intervals along the longitudinal direction of the steel box girder (11), and the inner space of the steel box girder (11) is divided into a plurality of cells through the transverse clapboards (10); a plurality of shear nails (3) are arranged on the inner wall of the steel box girder (11) at intervals, and concrete is poured into the steel box girder (11) for filling.
2. The shaped steel arch rib and steel box girder connection apparatus of claim 1, wherein: the flange type base plate (4) extends to the inner side and the outer side of the steel arch rib (9) along the surface of the steel box girder (11), and the inner side and the outer side are both provided with bolts (1).
3. The shaped steel arch rib and steel box girder connection apparatus of claim 1, wherein: and stiffening ribs (5) for enhancing the integral stress performance of the arch springing are arranged on the flange type base plates (4) between the bolts (1).
4. The shaped steel arch rib and steel box girder connection apparatus of claim 1, wherein: the bolt (1) comprises a nut and a screw rod (7) which are connected, a prefabricated connecting piece (8) is arranged on a box girder bottom plate of the steel box girder (11), the screw rod (7) penetrates through the inside of the steel box girder (11) and is anchored with the prefabricated connecting piece (8), and the nut is positioned above the flange type base plate (4).
5. The shaped steel arch rib and steel box girder connection apparatus of claim 1, wherein: the total length of the cells divided by the diaphragm plates (10) along the longitudinal direction of the steel box girder (11) is not less than twice the longitudinal dimension of the section of the steel arch rib (9).
6. The shaped steel arch rib and steel box girder connection apparatus of claim 1, wherein: the flange-type backing plate (4) and the arch springing of the steel arch rib (9) are welded into a whole, and holes are formed at the positions through which the bolts (1) penetrate.
7. A method for installing a connecting device of a special-shaped steel arch rib and a steel box girder is characterized by comprising the following steps:
prefabricating a steel box girder (11), wherein a plurality of diaphragm plates (10) are preset in the steel box girder (11) at positions corresponding to arch springing, the inner space of the steel box girder (11) is divided into a plurality of cells, and a plurality of shear nails (3) are arranged on the inner wall of the steel box girder (11) at intervals;
fixedly connecting the flange-type base plate (4) with the arch springing of the steel arch rib (9) along the surface direction of the steel box girder (11);
holes are formed in a flange type base plate (4) and a box girder top plate of a steel box girder (11), bolt holes formed in the flange type base plate (4) correspond to bolt holes formed in the box girder top plate one by one, and bolts (1) penetrate through the flange type base plate (4) and are vertically connected with the steel box girder (11);
horizontally arranging prestressed steel beams (2) in the steel box girder (11) along the axial direction of the steel box girder (11);
-casting concrete into the steel box girder (11) such that the fixed end of the bolt (1) is anchored in the concrete;
-tensioning the pre-stressed steel strands (2) when the concrete strength reaches the design strength;
-tightening the bolts (1) to securely join the steel arch rib (9) to the steel box girder (11).
8. The method of installing a device for connecting a profiled steel arch rib to a steel box girder according to claim 7, wherein: the prefabricated connecting piece (8) is arranged on a box girder bottom plate of the steel box girder (11), a screw rod (7) of the bolt (1) penetrates through the internal connection prefabricated connecting piece (8) of the steel box girder (11) to realize anchoring, and the bolt (1) is screwed up for the second time according to the contraction condition of concrete after installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911151304.7A CN110747751A (en) | 2019-11-21 | 2019-11-21 | Connecting device for special-shaped steel arch rib and steel box girder and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911151304.7A CN110747751A (en) | 2019-11-21 | 2019-11-21 | Connecting device for special-shaped steel arch rib and steel box girder and mounting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110747751A true CN110747751A (en) | 2020-02-04 |
Family
ID=69284069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911151304.7A Pending CN110747751A (en) | 2019-11-21 | 2019-11-21 | Connecting device for special-shaped steel arch rib and steel box girder and mounting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110747751A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062196A (en) * | 2021-04-10 | 2021-07-02 | 中铁广州工程局集团有限公司 | Dysmorphism manway view bridge arch roof beam joint section |
| CN114635506A (en) * | 2022-03-30 | 2022-06-17 | 浙江东南网架股份有限公司 | Prismatic steel pipe truss arch springing and mounting method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002201609A (en) * | 2000-12-28 | 2002-07-19 | Ps Corp | Construction method for concrete arch bridge |
| CN103061261A (en) * | 2013-01-25 | 2013-04-24 | 安徽省交通投资集团有限责任公司 | Anchor pulling plate component for concrete girder of cable-stayed bridge |
| CN103711073A (en) * | 2013-12-25 | 2014-04-09 | 中铁大桥勘测设计院集团有限公司 | Fixed connecting structure of steel tube arch rib and steel box girder |
| CN206256364U (en) * | 2016-11-16 | 2017-06-16 | 江苏中设集团股份有限公司 | Base-supporting freely-supported steel box tied arch bridge arch springing structure |
| CN209509010U (en) * | 2018-12-12 | 2019-10-18 | 北京惠鑫恒丰新能源科技有限公司 | A kind of prestressing force tower foundation |
| CN211522911U (en) * | 2019-11-21 | 2020-09-18 | 中铁二局集团有限公司 | Connecting device for special-shaped steel arch rib and steel box girder |
-
2019
- 2019-11-21 CN CN201911151304.7A patent/CN110747751A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002201609A (en) * | 2000-12-28 | 2002-07-19 | Ps Corp | Construction method for concrete arch bridge |
| CN103061261A (en) * | 2013-01-25 | 2013-04-24 | 安徽省交通投资集团有限责任公司 | Anchor pulling plate component for concrete girder of cable-stayed bridge |
| CN103711073A (en) * | 2013-12-25 | 2014-04-09 | 中铁大桥勘测设计院集团有限公司 | Fixed connecting structure of steel tube arch rib and steel box girder |
| CN206256364U (en) * | 2016-11-16 | 2017-06-16 | 江苏中设集团股份有限公司 | Base-supporting freely-supported steel box tied arch bridge arch springing structure |
| CN209509010U (en) * | 2018-12-12 | 2019-10-18 | 北京惠鑫恒丰新能源科技有限公司 | A kind of prestressing force tower foundation |
| CN211522911U (en) * | 2019-11-21 | 2020-09-18 | 中铁二局集团有限公司 | Connecting device for special-shaped steel arch rib and steel box girder |
Non-Patent Citations (1)
| Title |
|---|
| 李雅香: "城市非对称外倾拱肋钢拱桥受力特性研究", 《中国学位论文全文数据库》, 13 October 2014 (2014-10-13), pages 70 - 73 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062196A (en) * | 2021-04-10 | 2021-07-02 | 中铁广州工程局集团有限公司 | Dysmorphism manway view bridge arch roof beam joint section |
| CN113062196B (en) * | 2021-04-10 | 2022-07-22 | 中铁广州工程局集团有限公司 | Dysmorphism manway view bridge arch roof beam joint section |
| CN114635506A (en) * | 2022-03-30 | 2022-06-17 | 浙江东南网架股份有限公司 | Prismatic steel pipe truss arch springing and mounting method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101074751B1 (en) | Structural body for the end block of prestressed concrete/steel compositive girder and method making the prestressed concrete/steel compositive girder and method constructing the continuos girder | |
| CN110747751A (en) | Connecting device for special-shaped steel arch rib and steel box girder and mounting method thereof | |
| CN110578289A (en) | Novel steel-concrete composite beam shear force connecting key | |
| CN211522911U (en) | Connecting device for special-shaped steel arch rib and steel box girder | |
| CN112982787B (en) | Large-span beam with reinforced concrete and prestressed inhaul cable coupled | |
| CN111395210B (en) | Method for improving bearing capacity of truss girder bridge by using external prestressed tendons | |
| CN111851737A (en) | Assembled concrete frame beam column trunk type connecting joint | |
| KR101001905B1 (en) | Steel plate girder bridge construction method with fixing its ends | |
| CN108517759B (en) | Cable tower beam connecting system in corrugated steel web composite beam form and construction method | |
| CN110469140A (en) | A kind of construction method of Vierendeel girder prestressed reinforcement | |
| CN111254827B (en) | Stay cable and bridge tower anchoring structure and manufacturing method | |
| CN215593681U (en) | Built-in steel strand wires-vaulting pole cable-stay bridge cable tower anchor structure | |
| CN213869065U (en) | Connection structure for concrete building layer-adding reconstruction | |
| CN113047171A (en) | Built-in steel strand wires-vaulting pole cable-stay bridge cable tower anchor structure | |
| CN112283045A (en) | Framework type external prestress anti-fatigue steel tower structure | |
| CN217839718U (en) | Split thread steel bar temporary tie structure and tie system of V-shaped inclined leg rigid frame bridge | |
| CN210104550U (en) | High-strength prestressed bridge pier structure | |
| CN217027757U (en) | Precast beam bottom rib anchorage device, precast beam formed by same, and beam column joint and primary and secondary beam joints formed by same | |
| CN214993096U (en) | Transverse external cable structure device of leaning tower | |
| CN214883819U (en) | Reinforced concrete column base foundation with self-resetting function | |
| CN220013432U (en) | Steel structure anchoring block for external prestress reinforcement | |
| CN219952017U (en) | Pile body reinforcing structure of viaduct large-span bearing platform | |
| KR200369732Y1 (en) | Beam with circular steel pipe | |
| CN220150115U (en) | External prestress reinforcement structure applied to reinforcement of large-span gate pier upright post | |
| CN210827543U (en) | Column foot structure of spoke type beam string structure roof |
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 |