CN112709155A - Fish belly type suspension cable combined support and construction method thereof - Google Patents
Fish belly type suspension cable combined support and construction method thereof Download PDFInfo
- Publication number
- CN112709155A CN112709155A CN202110080059.6A CN202110080059A CN112709155A CN 112709155 A CN112709155 A CN 112709155A CN 202110080059 A CN202110080059 A CN 202110080059A CN 112709155 A CN112709155 A CN 112709155A
- Authority
- CN
- China
- Prior art keywords
- fish belly
- suspension cable
- main beam
- steel main
- type suspension
- 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
- 210000001015 abdomen Anatomy 0.000 title claims abstract description 50
- 239000000725 suspension Substances 0.000 title claims abstract description 49
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 241000251468 Actinopterygii Species 0.000 claims abstract description 48
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
Abstract
The invention discloses a fish belly type suspension cable combined support and a construction method thereof, wherein the fish belly type suspension cable combined support is arranged at the bottom of a steel main beam and comprises a flat connecting rod, upper stand columns, end aiming blocks and a pull cable, the bottom of the flat connecting rod is connected with a plurality of rows of the upper stand columns which are arranged in parallel, the end aiming blocks are arranged on the left side and the right side of the flat connecting rod, the end aiming blocks are connected with the steel main beam, the upper stand columns are connected with each other in the transverse direction through the pull cable, the two ends of the pull cable are respectively connected with the left side and the right side of the flat connecting rod, and the upper end of each upper stand column is provided with an upper jack. The invention has the advantages that: the settlement problem of the support can be effectively solved, and for the long-span composite beam structure, the structure load can be borne after the complete combination of the structure load can be efficiently achieved, and the economical efficiency of the bridge structure is greatly improved.
Description
Technical Field
The invention relates to the technical field of bridge supports, in particular to a fish belly type suspension cable combined support and a construction method thereof.
Background
At present, the known support system for bridge construction has various forms such as a Bailey piece support, a bowl buckle type support, a door type support and the like, the traditional support system has the problems of settlement deformation and the like, the traditional support system cannot be adopted when the structural span is large or the terrain and the structure are complex, and complicated and expensive construction measures such as foundation treatment, prepressing and the like are often adopted; when the structure height is very high or special terrains such as a protected area and a river canyon are spanned and a traditional support cannot be adopted or is very uneconomical, the bridge construction must adopt expensive large equipment such as a bridge girder erection machine, and when the structure span is large, the construction equipment cost for transporting and erecting the large bridge is very high.
Disclosure of Invention
The invention aims to provide a fish belly type suspension cable combined support which is arranged at the bottom of a steel main beam through an end aiming block and forms a self-supporting structure through tensioning a stay cable, so that the problem of settlement deformation is solved.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a fish belly formula suspension cable sectional shelf-unit, sets up in steel girder bottom, its characterized in that: the steel main beam connecting device is characterized by comprising a flat connecting rod, an upper stand column, a tip aiming fixing block and a stay cable, wherein a plurality of rows of the upper stand columns are arranged side by side at the bottom of the flat connecting rod, the tip aiming fixing block is arranged on the left side and the right side of the flat connecting rod, the tip aiming fixing block is connected with a steel main beam, the upper stand column is connected with the stay cable in the transverse direction, the two ends of the stay cable are respectively connected with the left side and the right side of the flat connecting rod, and an upper jack is arranged at the upper end of the upper stand column.
The flat connecting rod comprises a cross rod and a longitudinal rod, the upper upright column is arranged along the length direction of the cross rod, and the length of the upper upright column is increased from the left side of the cross rod to the middle part of the cross rod in sequence, and is decreased from the middle part of the cross rod to the right side of the cross rod in sequence.
The upper upright posts are connected in the longitudinal direction through connecting rods, and the side parts of the upper upright posts are connected with the flat connecting rods through side rods.
The lower ends of the upper upright post and the end aiming block are both provided with lower upright posts, and lower jacks are arranged between the upper upright post and the lower upright post and between the end aiming block and the lower upright post.
A construction method of a fish belly type suspension cable combined support is characterized by comprising the following steps: the construction method comprises the following steps:
a. erecting a steel main beam on a pier, and arranging a support between the top of the pier and the end part of the steel main beam;
b. manufacturing the fish belly type suspension cable combined support, anchoring the fish belly type suspension cable combined support to the bottom of the steel main beam through an end aiming block, and stretching a stay cable to form a self-supporting structure;
c. erecting a prefabricated bridge deck, adjusting the jacking force of an upper jack at the upper end of an upper upright column to a reasonable value, and then combining and pouring the steel main beam and the prefabricated bridge deck;
d. and releasing the jacking force of the upper jack after the joint surface strength meets the design requirement, finally separating the end aiming block from the steel main beam, and dismantling the fish belly type suspension cable combined support to finish construction.
A construction method of a fish belly type suspension cable combined support is characterized by comprising the following steps: the construction method comprises the following steps:
a. manufacturing the fish belly type suspension cable combined support, installing a lower upright post, installing the fish belly type suspension cable combined support at the top end of the lower upright post, and installing a lower jack between the upper upright post of the lower upright post and the fish belly type suspension cable combined support, and between the lower upright post and an end aiming block of the fish belly type suspension cable combined support;
b. the method comprises the following steps that a steel main beam is hoisted and erected on a fish belly type suspension cable combined support in a segmented mode, two end portions of the steel main beam are arranged on a bridge pier, a support is arranged between the top of the bridge pier and the end portion of the steel main beam, and the fish belly type suspension cable combined support is anchored with the two end portions of the steel main beam through an end portion sighting block;
c. adjusting the telescopic length of the lower jack to enable the steel main beams to be connected into a whole, tensioning a stay cable to form a self-supporting structure, and then dismantling the lower upright post and the lower jack on the lower upright post;
d. erecting a prefabricated bridge deck, adjusting the jacking force of an upper jack at the upper end of the upper upright column to a reasonable value, and then combining and pouring the steel main beam and the prefabricated bridge deck;
e. and releasing the jacking force of the upper jack after the joint surface strength meets the design requirement, finally separating the end aiming block from the steel main beam, and dismantling the fish belly type suspension cable combined support to finish construction.
The invention has the advantages that: the settlement problem of the support can be effectively solved, and for the long-span composite beam structure, the structure load can be borne after the complete combination of the structure load can be efficiently achieved, and the economical efficiency of the bridge structure is greatly improved.
Drawings
FIG. 1 is an elevation view of a suspended self-supporting fish-bellied suspension cable support of the present invention;
FIG. 2 is a cross-sectional view of the suspended self-supporting fish-bellied suspension cable support of the present invention;
FIG. 3 is an elevational view of the support-type fish belly suspension cable support of the present invention;
fig. 4 is a cross-sectional view of the support-type fish belly suspension cable support of the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:
as shown in figures 1-4, the marks 1-14 in the figures are respectively represented as a guy cable 1, an upper upright post 2, a flat connecting rod 3, an end anchoring block 4, an upper jack 5, a steel girder 6, a lower upright post 7, a lower jack 8, a pier 9, a support 10, a prefabricated bridge deck 11, a connecting rod 12, a side rod 13 and a bearing platform 14.
Example 1: as shown in fig. 1 and 2, the present embodiment relates to a fish belly type suspension cable combination support, in the present embodiment, the support is a hanging self-supporting fish belly type suspension cable support, the support is disposed at the bottom of a steel main beam 6, and mainly includes a flat connecting rod 3, an upper column 2, an end aiming block 4 and a guy cable 1, the bottom of the flat connecting rod 3 is connected with two rows of upper columns 2 disposed side by side, the left and right sides of the flat connecting rod 3 are respectively provided with 2 end aiming blocks 4, and the end aiming blocks 4 are connected with the steel main beam 6. The flat connecting rod 3 includes horizontal pole and vertical pole, goes up 2 length directions settings along the horizontal pole to the length of going up 2 stands increases in proper order from horizontal pole left side to horizontal pole middle part, reduces in proper order from horizontal pole middle part to horizontal pole right side, so that 2 counter-forces of every stand on the post of 1 stretch-draw of cable are more even, and the vertical axial force of stand 2 is adjusted to 2 length on the accessible adjustment during implementation. An upper jack 5 is arranged at the upper end of the upper upright post 2, and the upper jack 5 provides a certain jacking force for the steel main beam 6. In the construction of the steel-concrete composite beam, the internal force condition between the steel beam and the concrete bridge deck can be flexibly adjusted through the change of the length of the upper upright post 2 and the jacking force of the upper jack 5, so as to achieve the optimal state of structural stress.
As shown in fig. 1 and 2, in the transverse direction, the bottom ends of the upper upright posts 2 are connected through the guy cable 1, and two ends of the guy cable 1 are respectively connected with the left side and the right side of the flat connecting rod 3, and a self-supporting structure can be formed by stretching the guy cable 1; in the longitudinal direction, the bottom ends of the upper upright posts 2 are connected through the connecting rods 12, so that the stability of the hanging type self-supporting fish belly type suspension cable support is improved. In addition, the side of the upper column 2 is connected with the flat connecting rod 3 through a plurality of side rods 13 to form a triangular structure for reinforcing the connection between the upper column 2 and the flat connecting rod 3.
As shown in fig. 1 and 2, the present embodiment has the following construction method:
a. erecting the steel girder 6 on a pier 9, and arranging a support 10 between the top of the pier 9 and the end part of the steel girder 6;
b. manufacturing a proper hanging type self-supporting fish belly type suspension cable support according to actual conditions, anchoring the hanging type self-supporting fish belly type suspension cable support at the bottom of a steel main beam 6 through an end aiming block 4, and tensioning a stay cable 1 to form a self-supporting structure;
c. erecting a prefabricated bridge deck 11, adjusting the jacking force of an upper jack 5 at the upper end of an upper upright post 2 to a reasonable value, and then combining and pouring a steel main beam 6 and the prefabricated bridge deck 11;
d. and after the strength of the joint surface reaches the design requirement, releasing the jacking force of the upper jack 5, finally separating the end aiming block 4 from the steel main beam 6, and dismantling the hanging type self-supporting fish belly type suspension cable bracket to complete construction.
Example 2: as shown in fig. 3 and 4, in the present embodiment, the support is a supporting fish belly suspension cable support, and the support is disposed at the bottom of a steel main beam 6 and mainly includes a flat connecting rod 3, an upper column 2, an end aiming block 4, a guy cable 1 and a lower column 7, the bottom of the flat connecting rod 3 is connected with two rows of upper columns 2 disposed side by side, the left and right sides of the flat connecting rod 3 are respectively provided with 2 end aiming blocks 4, and the end aiming blocks 4 are connected with the steel main beam 6. The flat connecting rod 3 comprises a cross rod and a longitudinal rod, the upper upright post 2 is arranged along the length direction of the cross rod, and the length of the upper upright post 2 is sequentially increased from the left side of the cross rod to the middle part of the cross rod and is sequentially decreased from the middle part of the cross rod to the right side of the cross rod. An upper jack 5 is arranged at the upper end of the upper upright post 2, and the upper jack 5 provides a certain jacking force for the steel main beam 6. The lower ends of the upper upright post 2 and the end aiming fixing block 4 are respectively provided with a lower upright post 7, lower jacks 8 are respectively arranged between the upper upright post 2, the lower upright post 7 and the end aiming fixing block 4 and the lower upright post 7, the lower jacks 8 are used for jacking the upper upright post 2 and the end aiming fixing block 4, and then the position of the sectional steel main beam 6 is adjusted, so that the sectional steel main beam 6 is connected into a whole. Specifically, the lower upright 7 at the lower end of the end aiming block 4 can be arranged on the bearing platform 14, and the lower upright 7 at the lower end of the upper upright 2 can be arranged on the ground or other supporting structures. In addition, the lower upright posts 7 can be connected and reinforced in the longitudinal direction through connecting pieces.
As shown in fig. 3 and 4, in the transverse direction, the bottom ends of the upper upright posts 2 are connected through the guy cable 1, and the two ends of the guy cable 1 are respectively connected with the left side and the right side of the flat connecting rod 3, and a self-supporting structure can be formed by stretching the guy cable 1; in the longitudinal direction, the bottom ends of the upper upright posts 2 are connected through the connecting rods 12, so that the stability of the hanging type self-supporting fish belly type suspension cable support is improved. In addition, the side of the upper column 2 is connected with the flat connecting rod 3 through a plurality of side rods 13 to form a triangular structure for reinforcing the connection between the upper column 2 and the flat connecting rod 3.
As shown in fig. 3 and 4, the present embodiment has the following construction method:
a. manufacturing a proper support type fish belly type suspension cable support according to actual conditions, then installing a lower upright post 7, installing the support type fish belly type suspension cable support at the top end of the lower upright post 7, and installing a lower jack between the lower upright post 7 and the upper upright post 2, and between the lower upright post 7 and the end part anchoring block 4;
b. the steel girder 6 is hoisted and erected on the support type fish belly type suspension cable support in sections, two end parts of the steel girder 6 are arranged on the bridge pier 9, a support 10 is arranged between the top of the bridge pier 9 and the end part of the steel girder 6, and the support type fish belly type suspension cable support is anchored with the two end parts of the steel girder 6 through the end part aiming block 4;
c. adjusting the telescopic length of the lower jack 8 to connect the steel main beams 6 into a whole, tensioning the stay cable 1 to form a self-supporting structure, and then dismantling the lower upright post 7 and the lower jack 8 thereon;
d. erecting a concrete bridge deck 11, adjusting the jacking force of an upper jack 5 at the upper end of an upper upright post 2 to a reasonable value, and then combining and pouring a steel main beam 6 and the concrete bridge deck 11;
e. and after the strength of the joint surface reaches the design requirement, releasing the jacking force of the upper jack 5, finally separating the end aiming block 4 from the steel girder 6, and dismantling the support type fish belly suspension cable support to complete construction.
Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, they are not to be considered repeated herein.
Claims (6)
1. The utility model provides a fish belly formula suspension cable sectional shelf-unit, sets up in steel girder bottom, its characterized in that: the steel main beam connecting device is characterized by comprising a flat connecting rod, an upper stand column, a tip aiming fixing block and a stay cable, wherein a plurality of rows of the upper stand columns are arranged side by side at the bottom of the flat connecting rod, the tip aiming fixing block is arranged on the left side and the right side of the flat connecting rod, the tip aiming fixing block is connected with a steel main beam, the upper stand column is connected with the stay cable in the transverse direction, the two ends of the stay cable are respectively connected with the left side and the right side of the flat connecting rod, and an upper jack is arranged at the upper end of the upper stand column.
2. A fish belly sling combination according to claim 1, wherein: the flat connecting rod comprises a cross rod and a longitudinal rod, the upper upright column is arranged along the length direction of the cross rod, and the length of the upper upright column is increased from the left side of the cross rod to the middle part of the cross rod in sequence, and is decreased from the middle part of the cross rod to the right side of the cross rod in sequence.
3. A fish belly sling combination according to claim 1 or 2, wherein: the upper upright posts are connected in the longitudinal direction through connecting rods, and the side parts of the upper upright posts are connected with the flat connecting rods through side rods.
4. A fish belly sling combination according to claim 1, wherein: the lower ends of the upper upright post and the end aiming block are both provided with lower upright posts, and lower jacks are arranged between the upper upright post and the lower upright post and between the end aiming block and the lower upright post.
5. A construction method using the fish belly suspension cable composite support according to any one of claims 1 to 3, characterized in that: the construction method comprises the following steps:
a. erecting a steel main beam on a pier, and arranging a support between the top of the pier and the end part of the steel main beam;
b. manufacturing the fish belly type suspension cable combined support, anchoring the fish belly type suspension cable combined support to the bottom of the steel main beam through an end aiming block, and stretching a stay cable to form a self-supporting structure;
c. erecting a prefabricated bridge deck, adjusting the jacking force of an upper jack at the upper end of an upper upright column to a reasonable value, and then combining and pouring the steel main beam and the prefabricated bridge deck;
d. and releasing the jacking force of the upper jack after the joint surface strength meets the design requirement, finally separating the end aiming block from the steel main beam, and dismantling the fish belly type suspension cable combined support to finish construction.
6. A construction method using the fish belly suspension cable composite support according to any one of claims 1 to 4, characterized in that: the construction method comprises the following steps:
a. manufacturing the fish belly type suspension cable combined support, installing a lower upright post, installing the fish belly type suspension cable combined support at the top end of the lower upright post, and installing a lower jack between the upper upright post of the lower upright post and the fish belly type suspension cable combined support, and between the lower upright post and an end aiming block of the fish belly type suspension cable combined support;
b. the method comprises the following steps that a steel main beam is hoisted and erected on a fish belly type suspension cable combined support in a segmented mode, two end portions of the steel main beam are arranged on a bridge pier, a support is arranged between the top of the bridge pier and the end portion of the steel main beam, and the fish belly type suspension cable combined support is anchored with the two end portions of the steel main beam through an end portion sighting block;
c. adjusting the telescopic length of the lower jack to enable the steel main beams to be connected into a whole, tensioning a stay cable to form a self-supporting structure, and then dismantling the lower upright post and the lower jack on the lower upright post;
d. erecting a prefabricated bridge deck, adjusting the jacking force of an upper jack at the upper end of the upper upright column to a reasonable value, and then combining and pouring the steel main beam and the prefabricated bridge deck;
e. and releasing the jacking force of the upper jack after the joint surface strength meets the design requirement, finally separating the end aiming block from the steel main beam, and dismantling the fish belly type suspension cable combined support to finish construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110080059.6A CN112709155A (en) | 2021-01-21 | 2021-01-21 | Fish belly type suspension cable combined support and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110080059.6A CN112709155A (en) | 2021-01-21 | 2021-01-21 | Fish belly type suspension cable combined support and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112709155A true CN112709155A (en) | 2021-04-27 |
Family
ID=75549900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110080059.6A Pending CN112709155A (en) | 2021-01-21 | 2021-01-21 | Fish belly type suspension cable combined support and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112709155A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186836A (en) * | 2021-06-01 | 2021-07-30 | 中铁七局集团第三工程有限公司 | Construction method of brand-new prestress integral bridge falsework |
| CN114481838A (en) * | 2021-12-24 | 2022-05-13 | 中国电建集团贵阳勘测设计研究院有限公司 | Fish belly type suspension cable combined support and construction method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003221809A (en) * | 2002-01-29 | 2003-08-08 | Asahi Engineering Kk | Reinforcing structure of bridge |
| JP2004027516A (en) * | 2002-06-21 | 2004-01-29 | Oriental Construction Co Ltd | Composite truss segment and truss bridge for simultaneously using suspension cable by using this truss segment and its construction method |
| KR20060110130A (en) * | 2005-04-19 | 2006-10-24 | 주식회사 효광엔지니어링 | Auto-syncronized supporting system controlling to recover and offset displacement and repulsive force occurred according to working load, and constructing method of the supporting system |
| CN102839675A (en) * | 2012-09-25 | 2012-12-26 | 上海新强劲工程技术有限公司 | Long-span pre-stress fish belly sill for foundation pit support and mounting method thereof |
| CN105064195A (en) * | 2015-07-29 | 2015-11-18 | 广西交通科学研究院 | Internal prestress steel and concrete combined simply supported girder bridge of prefabricated and assembled fish-bellied corrugated steel web and construction method thereof |
| CN107059593A (en) * | 2017-04-25 | 2017-08-18 | 桑大勇 | A kind of interior suspension cable compound section bridge and its construction method |
| CN214423191U (en) * | 2021-01-21 | 2021-10-19 | 上海城建市政工程（集团）有限公司 | Fish belly formula suspension cable sectional shelf-unit |
-
2021
- 2021-01-21 CN CN202110080059.6A patent/CN112709155A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003221809A (en) * | 2002-01-29 | 2003-08-08 | Asahi Engineering Kk | Reinforcing structure of bridge |
| JP2004027516A (en) * | 2002-06-21 | 2004-01-29 | Oriental Construction Co Ltd | Composite truss segment and truss bridge for simultaneously using suspension cable by using this truss segment and its construction method |
| KR20060110130A (en) * | 2005-04-19 | 2006-10-24 | 주식회사 효광엔지니어링 | Auto-syncronized supporting system controlling to recover and offset displacement and repulsive force occurred according to working load, and constructing method of the supporting system |
| CN102839675A (en) * | 2012-09-25 | 2012-12-26 | 上海新强劲工程技术有限公司 | Long-span pre-stress fish belly sill for foundation pit support and mounting method thereof |
| CN105064195A (en) * | 2015-07-29 | 2015-11-18 | 广西交通科学研究院 | Internal prestress steel and concrete combined simply supported girder bridge of prefabricated and assembled fish-bellied corrugated steel web and construction method thereof |
| CN107059593A (en) * | 2017-04-25 | 2017-08-18 | 桑大勇 | A kind of interior suspension cable compound section bridge and its construction method |
| CN214423191U (en) * | 2021-01-21 | 2021-10-19 | 上海城建市政工程（集团）有限公司 | Fish belly formula suspension cable sectional shelf-unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113186836A (en) * | 2021-06-01 | 2021-07-30 | 中铁七局集团第三工程有限公司 | Construction method of brand-new prestress integral bridge falsework |
| CN114481838A (en) * | 2021-12-24 | 2022-05-13 | 中国电建集团贵阳勘测设计研究院有限公司 | Fish belly type suspension cable combined support and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211815489U (en) | Super large span flying swallow type concrete filled steel tube arch bridge with self-anchoring suspension cable system | |
| CN109853353B (en) | Spatial special-shaped arch bridge and construction method thereof | |
| CN112709155A (en) | Fish belly type suspension cable combined support and construction method thereof | |
| CN110593114A (en) | Box girder construction method based on large-span box girder multi-hoop truss support bailey bracket | |
| CN214423191U (en) | Fish belly formula suspension cable sectional shelf-unit | |
| CN109138431B (en) | Super high-rise pump pipe bridge crossing device and construction method thereof | |
| CN111764306B (en) | Cantilever pouring arching control method for arranging buckling cable steering device on large-span main arch stand column | |
| CN111395186B (en) | Method for erecting temporary pier of large-span steel-concrete composite beam cable-stayed bridge | |
| CN211815595U (en) | Lower tower column tension and compression structure for cable tower | |
| CN111305089A (en) | It consolidates single-column mound bridge structures to inlay solid stabilizing support | |
| CN110700109A (en) | Construction process of concrete arch ring of steel pipe stiff skeleton of bridge | |
| CN113756209B (en) | Cable-stayed pushing construction method for large-span steel beam | |
| CN115162211A (en) | Cantilever pouring construction method for main arch ring of reinforced concrete arch bridge | |
| CN212200101U (en) | Supporting upright post and structure for suspended casting of box girder at triangular area of hollow rigid frame bridge | |
| CN212561172U (en) | Jig frame structure, jig frame assembly and assembling structure | |
| CN211816286U (en) | Steel wire rope stretching method beam-string type supporting structure | |
| CN110184898B (en) | Steel skeleton segment of main tower anchoring area of cable-stayed bridge and tower column construction method | |
| CN215164738U (en) | Tied-rod arch type fast-splicing support | |
| CN220504665U (en) | Ectopic assembled H-shaped steel tower | |
| CN213061657U (en) | Large-span cable-stayed steel trestle structure | |
| CN217810527U (en) | Asynchronous hanging basket hoisting system with corrugated steel web self-bearing function | |
| CN215947912U (en) | Cast-in-place case roof beam of mountain area topography back-pulls back pressure support | |
| CN212926974U (en) | External hanging rack structure | |
| CN216947913U (en) | Arch rib supporting structure of large-tonnage bridge | |
| CN214089509U (en) | Steel case roof beam combined type hoist system |
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 |