CN113481851B - A tie-rod arch type quick-assembly support and its erection method - Google Patents
A tie-rod arch type quick-assembly support and its erection method Download PDFInfo
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- CN113481851B CN113481851B CN202110414714.7A CN202110414714A CN113481851B CN 113481851 B CN113481851 B CN 113481851B CN 202110414714 A CN202110414714 A CN 202110414714A CN 113481851 B CN113481851 B CN 113481851B
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- arch
- tie bar
- bracket
- bridge
- tie
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 4
- 238000007781 pre-processing Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
Classifications
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- 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
- E01D4/00—Arch-type bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a tie bar arch type quick splicing bracket and a erecting method thereof, wherein the bracket comprises two tie bar arches arranged between two piers, each tie bar arch comprises an arch rib, tie bars are connected between arch legs at two ends of the arch rib, the arch legs at two ends of the arch rib are respectively supported on brackets preset on a pier body, a flat link rod is connected between the two arch ribs, a plurality of upright posts are welded on each arch rib, the upper ends of the upright posts are the same as the arch tops of the arch ribs, and a spandrel girder is arranged along the tops of the upright posts and the arch tops on each arch rib. The invention adopts the tie bar arch as the main stress structure of the bracket, fully utilizes the constructed pier structure, avoids the foundation treatment of poor geology, and has the advantages of light structure, material saving, low cost, convenient assembly and disassembly and the like under the same load.
Description
Technical Field
The invention belongs to the technical field of bridge construction, relates to a bracket erected during bridge superstructure installation, and in particular relates to a tie rod arch type rapid assembly bracket and an erection method thereof.
Background
The sliding installation or the cast-in-situ construction of the bridge box girder is required to be provided with a bracket. The existing common bridge construction sliding support or cast-in-situ beam support mainly comprises a floor large-diameter steel pipe support, a full-hall scaffold and a truss type movable formwork.
The floor large-diameter steel pipe support is large in total steel consumption, time and labor are wasted in assembly and disassembly, when the foundation of a bridge is poor, foundation treatment is needed, and economical efficiency is poor.
The full scaffold is complex to install and has high requirement on installation quality. When the foundation of the bridge is worse, the foundation treatment is needed. And major accidents such as support collapse are taken as the majority of full-hall scaffolds.
The truss type movable mould frame can be attached to the pier body in the form of a pin rod or a triangular bracket and the like, so that the workload of foundation treatment is reduced, but the structural weight of the movable mould frame rises sharply along with the increase of the span of a bridge, and when the movable mould frame reaches a certain span, the movable mould frame structure is too heavy, the steel consumption is large, and the economic efficiency is obviously reduced.
Disclosure of Invention
The invention aims at overcoming the defects of the existing bridge construction sliding support or cast-in-situ beam support, and develops a tie bar arch type bearing support which is lighter in structure, better in economy and more convenient to construct and a building method thereof.
The invention provides a tie bar arch type quick splicing bracket which is characterized by comprising two tie bar arches arranged between two piers, wherein each tie bar arch comprises an arch rib, tie bars are connected between arch legs at two ends of the arch rib, the arch legs at two ends of the arch rib are respectively supported on lower brackets preset on a pier body, a flat link rod is connected between the two arch ribs, a plurality of upright rods are welded on each arch rib, the upper ends of the upright rods are the same as the arch tops of the arch ribs, and a spandrel girder is arranged along the tops of the upright rods and the arch tops of the arch ribs.
The invention provides a tie bar arch type quick splicing bracket erecting method which is characterized by comprising the following steps of:
(1) Before the bridge pier is erected, mounting a lower bracket or an upper bracket on the bracket embedded part and mounting a drop device on each bracket, wherein the drop device adopts a sand drop cylinder or a drop steel wedge;
(2) A tie bar arch bracket is erected between two bridge piers:
(21) Under the condition that brackets are positioned on two opposite sides of two pier bodies along the bridge, two tie bar arches are arranged between the two opposite sides of the two pier bodies, two arch feet of each tie bar arch are respectively supported on lower brackets on the two piers, and a flat link rod is arranged between arch ribs of the two tie bar arches;
the method comprises the steps of pre-processing a plurality of vertical rods used for supporting on arch ribs, wherein the length of each vertical rod is determined according to the height of a vault from the elevation of the position of each vertical rod, which is preset to be supported on the arch ribs, pre-welding the upper end of each vertical rod with the bottom surface of a spandrel girder, welding connecting rods between the vertical rods connected with the bottom of each spandrel girder and between the vertical rods connected with the bottoms of the two spandrel girders to form a truss structure, integrally hoisting the truss above the two arch ribs, supporting each spandrel girder on the vault of the arch ribs and the upper bracket on a pier, welding the lower end of each vertical rod with the arch ribs, and erecting a tie bar arch bracket;
(22) Under the condition that brackets are positioned on two sides of each bridge pier transverse bridge, a tie bar arch is respectively arranged on two sides of each bridge pier body, a plurality of vertical rods are welded on each tie bar arch in advance, the upper end of each vertical rod is the same as the arch height of each tie bar arch rib, the tie bar arch and the vertical rods are integrally hoisted, two end arch feet of each tie bar arch are respectively supported on lower brackets on the two bridge piers, and a flat link rod is arranged between the arch ribs of the two tie bar arches;
And erecting a spandrel girder along the tops of the vertical rods on each arch rib and the arch crown, transversely erecting a plurality of distributing girders on the two spandrel girders, and erecting a tie rod arch bracket.
The invention adopts the tie bar arch as the main stress structure of the bracket. The tie bar arch is a structure integrating the advantages of the arch and the rod, combines the two basic structural forms of the arch and the rod together to bear load, fully exerts the structural performance and combined action of compression of the arch and tension of the tie bar, and the horizontal thrust of the arch end is borne by the tie bar, so that the arch end support does not generate horizontal thrust.
Drawings
FIG. 1 is a schematic diagram of one embodiment of a tie-bar arch quick-splice bracket;
FIG. 2 is a schematic diagram of another embodiment of a tie-bar arch quick-splice bracket;
FIG. 3 is a schematic illustration of the tie arch and parallel mounting of the embodiment of FIG. 1;
FIG. 4 is a schematic view of the embodiment of FIG. 1 showing the installed upright and bolster;
FIG. 5 is a schematic view of the embodiment of FIG. 2 showing the installation of the tie arch and the pole;
FIG. 6 is a schematic view of the embodiment of FIG. 2 in a flat link mounted condition.
Detailed Description
As shown in fig. 1 and 2, the tie-bar arch type quick splicing bracket provided by the invention comprises two tie-bar arches arranged between two bridge piers 1, wherein each tie-bar arch comprises an arch rib 2, tie bars 3 are connected between arch feet at two ends of the arch rib, the arch feet at two ends of the arch rib are respectively supported on lower brackets 4 preset on a pier body, a flat link rod 5 is connected between the two arch ribs, a plurality of upright posts 6 are welded on each arch rib, the upper ends of the upright posts are the same as the arch tops of the arch ribs, and a bearing beam 7 is arranged along the tops and the arch tops of the upright posts on each arch rib.
In the embodiment shown in fig. 1, two steel arches are supported on opposite side walls of two bridge piers along the bridge, and upper brackets 8 are also preset on the two opposite side walls of the bridge piers, and two ends of the spandrel girder 7 are respectively supported on the two upper brackets 8.
In the embodiment shown in fig. 2, two tie arches are mounted on the lateral walls of the two pier body cross-bridges, respectively, and the spandrel girder is erected with a distribution girder 9.
In order to facilitate the height adjustment during the installation of the bracket and the disassembly of the bracket after the construction is completed, the lower bracket and the upper bracket are respectively provided with a drop device, and the drop device can adopt a drop sand cylinder or a drop steel wedge.
In order to avoid the displacement of the spandrel girder, the vault of each arch rib can be provided with a spandrel girder positioning clamping groove. The two sides of the spandrel girder are limited in the positioning clamping groove.
The erection method of the tie bar arch type quick splicing bracket comprises the following steps:
(1) Before the bridge pier 1 is erected, a lower bracket 4 or an upper bracket 8 is arranged on the bracket embedded part, and a drop device is arranged on each bracket, wherein the drop device adopts a sand drop cylinder or a drop steel wedge;
(2) A tie bar arch bracket is erected between two bridge piers:
(21) As shown in fig. 3, in the case that brackets are positioned on two opposite sides of two pier bodies along the bridge, two tie-bar arches are installed between the two opposite sides of the two pier bodies, two arch feet of each tie-bar arch rib 2 are respectively supported on the lower brackets 4 on the two piers, and a flat link rod 5 is arranged between the arch ribs of the two tie-bar arches;
As shown in FIG. 4, a plurality of uprights 6 for supporting on the arch rib are prefabricated, the length of each upright is determined from the elevation of the position where the upright is scheduled to be supported on the arch rib to the height of the arch, the upper end of each upright 6 is welded with the bottom surface of the spandrel girder 7 in advance, connecting rods 10 are welded between the uprights connected with the bottom of each spandrel girder and between the uprights connected with the bottoms of the two spandrel girders to form a truss structure, the truss is integrally hoisted above the two arch ribs, each spandrel girder 7 is supported on the arch rib arch and the upper bracket 8 on the bridge pier, the lower end of each upright is welded with the arch rib, and the bracket erection is completed. The completed tie-bar arch bracket is erected as shown in fig. 1.
(22) As shown in fig. 5 and 6, when brackets are positioned on two sides of each bridge pier, a tie bar arch is respectively arranged on two sides of each bridge pier body, a plurality of vertical rods 6 are welded on the arch rib 2 of each tie bar arch in advance, the upper end of each vertical rod is the same as the arch height of the tie bar arch rib, the tie bar arch and the vertical rods are integrally hoisted, the two end arch feet of each tie bar arch rib 2 are respectively supported on the lower brackets 4 on the two bridge piers, and a flat link rod 5 is arranged between the arch ribs of the two tie bar arches;
And erecting a spandrel girder 7 along the tops of the vertical rods and the vaults on each arch rib, erecting a plurality of distributing beams 9 on the two spandrel girders in the transverse bridge direction, and completing the erection of the bracket. The completed tie-bar arch bracket is shown in fig. 2.
Claims (2)
1. A tie bar arch type quick splicing bracket is characterized by comprising two tie bar arches arranged between two bridge piers, wherein each tie bar arch comprises an arch rib, tie bars are connected between arch feet at two ends of each arch rib, the arch feet at two ends of each arch rib are respectively supported on lower brackets preset on pier bodies, a flat link rod is connected between the two arch ribs, a plurality of vertical rods are welded on each arch rib, the upper ends of the vertical rods are the same as the arch tops of the arch ribs, a spandrel girder is arranged along the tops of the vertical rods and the arch tops of the arch ribs, the two tie bar arches are supported on two side walls of the two bridge piers in the bridge direction, upper brackets are further arranged on the opposite side walls of the two bridge piers, two ends of each spandrel girder are respectively supported on the upper brackets of the two bridge piers, the lower brackets are preset on two side walls of each bridge pier in the cross direction, and distribution beams are arranged on the spanned girders.
2. The tie bar arch type quick splicing bracket erecting method is characterized by comprising the following steps of:
(1) Before the bridge is erected, a lower bracket or an upper bracket is arranged on the bracket embedded part, and a drop device is arranged on each bracket, wherein the drop device adopts a sand drop cylinder or a steel drop wedge;
(2) A tie bar arch bracket is erected between two bridge piers:
(21) Under the condition that brackets are positioned on two opposite sides of two pier bodies along the bridge, two tie bar arches are arranged between the two opposite sides of the two pier bodies, two arch feet of each tie bar arch are respectively supported on lower brackets on the two piers, and a flat link rod is arranged between arch ribs of the two tie bar arches;
The method comprises the steps of pre-processing a plurality of vertical rods used for supporting on arch ribs, wherein the length of each vertical rod is determined according to the elevation of the position of each vertical rod, which is scheduled to be supported on the arch ribs, to the height of a vault;
(22) Under the condition that brackets are positioned on two sides of each bridge pier transverse bridge, a tie bar arch is respectively arranged on two sides of each bridge pier body, a plurality of vertical rods are welded on each tie bar arch in advance, the upper end of each vertical rod is the same as the arch height of each tie bar arch rib, the tie bar arch and the vertical rods are integrally hoisted, two end arch feet of each tie bar arch are respectively supported on lower brackets on the two bridge piers, and a flat link rod is arranged between the arch ribs of the two tie bar arches;
And erecting a spandrel girder along the tops of the vertical rods on each arch rib and the arch crown, erecting a plurality of distribution beams in the transverse bridge direction on the two spandrel girders, and completing the erection of the tie bar arch bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110414714.7A CN113481851B (en) | 2021-04-17 | 2021-04-17 | A tie-rod arch type quick-assembly support and its erection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110414714.7A CN113481851B (en) | 2021-04-17 | 2021-04-17 | A tie-rod arch type quick-assembly support and its erection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113481851A CN113481851A (en) | 2021-10-08 |
| CN113481851B true CN113481851B (en) | 2025-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110414714.7A Active CN113481851B (en) | 2021-04-17 | 2021-04-17 | A tie-rod arch type quick-assembly support and its erection method |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215164738U (en) * | 2021-04-17 | 2021-12-14 | 中交路桥建设有限公司 | Tied-rod arch type fast-splicing support |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8201380B2 (en) * | 2009-02-23 | 2012-06-19 | Paul Hargest | Reinforcing shape member for a wall and system for construction using same |
| CN104234418A (en) * | 2013-12-06 | 2014-12-24 | 绍兴文理学院 | Early removal formwork for fabrication of reinforced concrete beams and construction method thereof |
| CN109235285B (en) * | 2018-09-21 | 2024-01-16 | 中铁第四勘察设计院集团有限公司 | Cantilever pouring system and construction method for reinforced concrete arch bridge of large-span railway |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN215164738U (en) * | 2021-04-17 | 2021-12-14 | 中交路桥建设有限公司 | Tied-rod arch type fast-splicing support |
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| CN113481851A (en) | 2021-10-08 |
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