CN110847056A - Cantilever pull rod assembly type triangular bracket and construction method thereof - Google Patents
Cantilever pull rod assembly type triangular bracket and construction method thereof Download PDFInfo
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- CN110847056A CN110847056A CN201911289559.XA CN201911289559A CN110847056A CN 110847056 A CN110847056 A CN 110847056A CN 201911289559 A CN201911289559 A CN 201911289559A CN 110847056 A CN110847056 A CN 110847056A
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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
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Abstract
The utility model provides a cantilever pull rod assembled triangular bracket, includes bridge pier stud, triangular bracket, pore-forming pipeline, goes up pull rod, lower pull rod, supports the bearing, pre-buried pore-forming pipeline and support the bearing before bridge pier stud concrete placement to connect horizontal pole, down tube, montant in advance and assemble formation triangular bracket. After concrete pouring and curing are completed, an upper pull rod and a lower pull rod penetrate into the pore-forming pipeline, the triangular bracket is hoisted to the upper part of the supporting bearing and is temporarily fixed, and the upper pull rod and the lower pull rod are tensioned to anchor the triangular bracket to the side wall of the bridge pier column, so that the cantilever pull rod assembly type triangular bracket is formed. The symmetry and the stability of the triangular bracket atress of pier stud both sides can be ensured as the connecting piece through penetrating upper and lower pull rod in the bridge pier stud, and the support bearing of triangular bracket below can provide the vertical support of triangular bracket simultaneously. The structure is simple and convenient to operate, the components can be recycled, the bearing capacity and the stability are high, and the application prospect is wide.
Description
Technical Field
The invention belongs to the field of civil engineering, and relates to a bridge construction bracket, in particular to a cantilever pull rod assembly type triangular bracket and a construction method thereof.
Background
The bridge bracket is used for supporting the template when the bridge pours the 0# piece, bear the construction load, traditional bracket is pre-buried bold steel sheet in the pier, with the triangle bracket after the assembly welding is accomplished under the bridge monolithic hoist and mount take one's place with pre-buried steel sheet welding, but traditional bracket has high altitude vertical welding in the work progress, the welding seam quality is difficult to guarantee, there is the problem of potential safety hazard, and the welding seam is long, high altitude welding work load is big, the bracket installation cycle is long, consequently need study a safety and convenience, sustainable use and the bridge bracket that the installation effectiveness is high.
The existing bridge bracket is mainly connected with a pier through a connecting piece, for example, Chinese patent '201721822376.6' discloses a bridge bracket which comprises an installation steel sleeve provided with a clamping groove, a support plate, an insertion ring groove and a matching clamping ring, wherein the installation steel sleeve is fixed on two sides of the pier through the insertion ring groove and the matching clamping ring, the support plate is installed on the installation steel sleeve through the clamping groove, the installation process is simplified, the efficiency is improved, however, the symmetry of the bracket is difficult to ensure by respectively installing the two sides, and a raised ring part is required to be arranged at the pier and protrudes out of a pier body, so that the attractiveness is influenced; as the chinese patent '201822039683.8' discloses a bridge construction support bracket, which includes a first pull rod, a second pull rod, a third pull rod and two support units, the structure does not need to embed steel plates in the bridge pier, does not damage the quality of the bridge pier, has high bearing capacity, however, more components bring inconvenience to installation, and the support units arranged on the ground cannot be used under special conditions of muddy and water surface, and has limitation; and like chinese patent "201520263654.3" again, a bridge bracket structure is disclosed, including horizontal die-pin, diagonal draw bar, support sleeve, fixed orifices, this structure does not need the built-in fitting, only need tightly hoop the steel bushing on the pier in the upper end of pier, then weld the bracket on the support sleeve, has reduced bridge bracket's support intensity and load, however every pier need bore and establish a large amount of fixed orifices, and the high altitude construction is dangerous and the operation degree of difficulty is big, is difficult to promote on a large scale.
In summary, the existing bridge pier bracket structure has limited application scenes, or needs high-altitude operation, is dangerous and difficult, or wastes time and labor, so that a bridge bracket structure which is simple and convenient to install and operate, safe and efficient needs to be researched and developed.
Disclosure of Invention
The invention aims to provide a cantilever pull rod assembly type triangular bracket which comprises a bridge pier stud, a triangular bracket, a pore-forming pipeline, an upper pull rod, a lower pull rod and a support bearing, wherein the pore-forming pipeline and the support bearing are pre-embedded before concrete of the bridge pier stud is poured, and a horizontal rod, an inclined rod and a vertical rod are connected and assembled in advance to form the triangular bracket; after concrete pouring and curing are completed, an upper pull rod and a lower pull rod penetrate into the pore-forming pipeline, the triangular bracket is hoisted to the upper part of the supporting bearing and is temporarily fixed, and the upper pull rod and the lower pull rod are tensioned to anchor the triangular bracket to the side wall of the bridge pier column to form a cantilever pull rod assembly type triangular bracket; the symmetry and the stability of the triangular bracket stress of pier stud both sides can be ensured as the connecting piece through penetrating upper and lower pull rod in the bridge pier stud for the triangular bracket stress of both sides is balanced each other, and the support bearing of triangular bracket below can provide the vertical support of triangular bracket simultaneously, provides vertical shear force and supports, and both combinations can effectively improve the bearing capacity and the stability of triangular bracket, and this structure is easy and simple to handle, and the recoverable recycling of component, bearing capacity, stability are high, have wide application prospect.
A cantilever pull rod assembly type triangular bracket comprises a bridge pier stud, triangular brackets, pore-forming pipelines, an upper pull rod, a lower pull rod and supporting bearings, wherein each set of triangular bracket is assembled into a right-angled triangular framework by a horizontal rod, an inclined rod and a vertical rod in a factory or on site, a plurality of pairs of supporting bearings are symmetrically pre-embedded on two side walls of the bridge pier stud along the bridge direction, the bottom end of the vertical rod of the integrally assembled triangular bracket is fixedly supported on the supporting bearings, the pore-forming pipelines are horizontally arranged in the bridge pier stud to form a plurality of horizontal pore channels, the axis of each pore-forming pipeline is along the bridge direction, the upper pull rod and the lower pull rod respectively penetrate through the horizontal pore channels in the pore-forming pipelines in the bridge pier stud and are respectively and symmetrically anchored on the middle upper part and the middle lower part of the vertical rod of the triangular bracket on two sides of the bridge pier stud along the bridge direction, a certain pretension is applied to rod, the triangular bracket is connected and fixed with the upper pull rod, the lower pull rod and the supporting bearing to form the cantilever pull rod type triangular bracket.
The upper pull rod and the lower pull rod are made of one of steel bars, steel strands and FRP bars, the upper pull rod is located in the range of 1/3 on the upper portion of the vertical rod of the triangular bracket, the lower pull rod is located in the range of 1/3 on the lower portion of the vertical rod of the triangular bracket, and a plurality of middle pull rods are arranged between the upper pull rod and the lower pull rod.
The pore-forming pipeline is one of a steel pipe, a cast iron pipe, an FRP pipe, a plastic pipe and a PVC pipe, and the diameter of the pore-forming pipeline is at least 2mm larger than the diameter of the upper pull rod and the lower pull rod.
The support is made of a profile steel structure, a steel pipe filled concrete structure or a steel concrete laminated structure, the exposed length is not less than 50mm, and the embedded depth is not less than 100 mm.
The triangular brackets are transversely arranged at intervals along the bridge direction side wall of the bridge pier stud, the number of the triangular brackets is more than two pairs, transverse connecting pieces can be arranged between the adjacent triangular brackets, and a plurality of pairs of triangular brackets mutually form support together.
The triangular bracket is characterized in that the connecting modes of the horizontal rods, the inclined rods and the vertical rods in the triangular bracket are one or more of welding, riveting and bolt connection, and a plurality of web members are arranged among the horizontal rods, the inclined rods and the vertical rods and play a role in reinforcing the triangular bracket.
The triangular bracket is connected with the supporting support in an anchor bolt connection or welding connection mode.
A construction method of a cantilever pull rod assembly type triangular bracket comprises the following steps:
A. pre-buried pore-forming pipeline and support bearing
Before concrete of the bridge pier stud is poured, the pore-forming pipelines are horizontally embedded in the corresponding positions of the upper pull rod and the lower pull rod which are horizontal along the bridge direction of the bridge pier stud, a plurality of pairs of supporting bearings are symmetrically embedded in two side walls of the bridge pier stud along the bridge direction, the exposed length of each supporting bearing is not less than 50mm, and the embedded depth is not less than 100 mm.
B. Pouring and curing concrete
And pouring bridge pier stud concrete and curing to specified strength according to the standard.
C. Processing and assembling triangular bracket
The horizontal rods, the diagonal rods and the vertical rods are respectively processed according to preset sizes, and the processed horizontal rods, diagonal rods and vertical rods are assembled into a plurality of sets of triangular brackets in a factory or on site.
D. An upper pull rod and a lower pull rod penetrate into the pore passage
And the upper pull rod and the lower pull rod penetrate into a pore-forming pipeline of the bridge pier stud, and the length of the two sides of the upper pull rod and the two sides of the lower pull rod, which are respectively exposed out of the bridge pier stud, is not less than 10 cm.
E. Hoisting and temporary fixing triangular bracket
The triangular bracket is hoisted to the upper part of the supporting bearing, the lower part of the vertical rod of the triangular bracket is supported on the upper part of the supporting bearing, and the vertical rod and the supporting bearing are connected and fixed through welding and anchor bolt connection so as to temporarily fix the triangular bracket.
F. The triangular bracket is connected with the upper pull rod
The upper pull rods are symmetrically stretched on two sides, the upper pull rods are connected with the triangular brackets on the two sides through anchor bolts after stretching is completed, and the triangular brackets on the two sides are symmetrically connected at the same time.
G. The triangular bracket is connected with the lower pull rod
The lower pull rods are symmetrically stretched on two sides, the lower pull rods are connected with the triangular brackets on the two sides through anchor bolts after stretching is completed, and the triangular brackets on the two sides are symmetrically connected at the same time.
And connecting and fixing a plurality of pairs of triangular brackets on the side wall of the bridge pier column according to the steps to form the cantilever pull rod assembly type triangular bracket.
Compared with other triangular brackets, the invention has the following advantages:
1) the triangular brackets are symmetrically arranged on two sides of the pier stud, the stress is symmetrical, the self balance of a two-side system can be realized, the stress is reasonable, the possibility of overturning is low, and the bearing capacity is higher.
2) The horizontal rods, the vertical rods and the inclined rods can be assembled in advance and transported to the site, construction efficiency is high, construction period is saved, and assembly degree is high.
3) The triangular bracket only needs to be connected with the pull rod and the supporting bearing, so that the high-altitude operation is relatively less, and the safety is higher.
4) The structure provided by the invention is a cantilever structure, only relates to the upper space of a pier, does not have ground supporting members such as columns and the like, does not need to consider the lower space of the pier and the environmental conditions, and has wider application range.
5) After the triangular bracket is used, the triangular bracket can be detached only by releasing the connection between the triangular bracket and the bridge pier stud, the operation is convenient and fast, the detached triangular bracket can be used repeatedly, and the economy is good.
Drawings
FIG. 1: a cantilever pull rod assembly type triangular bracket is structurally and schematically shown in a front view;
FIG. 2: a cantilever pull rod assembly type triangular bracket is structurally schematic in side view;
FIG. 3: a cantilever pull rod assembly type triangular bracket is characterized in that a structural front view is formed when web members are arranged among horizontal rods, vertical rods and inclined rods;
FIG. 4: a cantilever pull rod assembly type triangular bracket is characterized in that a structural front view is formed when a plurality of middle pull rods are arranged between an upper pull rod and a lower pull rod;
FIG. 5: a cantilever pull rod assembly type triangular bracket is characterized in that the structure of the bracket is in a front view when a transverse connecting piece is arranged between adjacent triangular brackets;
FIG. 6: a cantilever pull rod assembly type triangular bracket is characterized in that a structural side view is formed when a transverse connecting piece is arranged between adjacent triangular brackets;
FIG. 7: a cantilever pull rod assembly type triangular bracket is structurally characterized in that a pore-forming pipeline and a support are embedded in a bridge pier column;
FIG. 8: a cantilever pull rod assembly type triangular bracket is characterized in that a structural schematic diagram of an upper pull rod and a lower pull rod penetrate into a pore passage in a pore-forming pipeline;
FIG. 9: a cantilever pull rod assembly type triangular bracket is characterized in that the front view of the triangular bracket is assembled;
FIG. 10: a cantilever pull rod assembly type triangular bracket is structurally and schematically shown after the triangular bracket is hoisted and fixedly connected with an upper pull rod, a lower pull rod and a supporting bearing;
FIG. 11: a flow chart of a construction method of a cantilever pull rod assembly type triangular bracket;
in all the drawings, 1 is a bridge pier stud; 2 is a triangular bracket; 21 is a horizontal rod; 22 is a diagonal rod; 23 is a vertical rod; 24 is a transverse connecting piece; 25 is a web member; 3 is a pore-forming pipeline; 41 is an upper pull rod; 42 is a lower pull rod; 43 is a middle pull rod; and 5, a supporting support.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the invention, reference is now made to the detailed description of the embodiments of the invention taken in conjunction with the accompanying drawings.
Example 1
As shown in figures 1-2, a cantilever pull rod assembly type triangular bracket comprises a bridge pier stud 1, a triangular bracket 2, pore-forming pipelines 3, an upper pull rod 41, a lower pull rod 42 and supporting bearings 5, wherein each set of triangular bracket 2 is assembled into a right-angled triangular framework in a factory or on site by a horizontal rod 21, an inclined rod 22 and a vertical rod 23, three pairs of supporting bearings 5 are symmetrically pre-embedded on two side walls of the bridge pier stud 1 along the bridge direction, the bottom end of the vertical rod 23 of the integrally assembled triangular bracket 2 is fixedly supported on the supporting bearings 5, the upper pore-forming pipeline 3 and the lower pore-forming pipeline 3 are horizontally arranged in the bridge pier stud 1 to form an upper horizontal pore channel and a lower horizontal pore channel, the axis of the pore-forming pipeline 3 is along the bridge direction, the upper pull rod 41 and the lower pull rod 42 respectively penetrate through the horizontal pore channels in the pore-forming pipeline 3 in the bridge pier stud 1 and are respectively and symmetrically anchored on the middle upper part and the middle lower part of the vertical, a certain pretension is applied in the rod members of the upper pull rod 41 and the lower pull rod 42, the triangular bracket 2, the upper pull rod 41, the lower pull rod 42 and the support 5 are fixedly connected to form a pair of cantilever pull rod type triangular brackets, and three pairs of cantilever pull rod assembly type triangular brackets are equidistantly arranged along the bridge direction of each bridge pier 1.
Example 2
As shown in FIG. 3, a cantilever pull rod assembly type triangular bracket comprises a bridge pier stud 1, a triangular bracket 2, pore-forming pipelines 3, an upper pull rod 41, a lower pull rod 42 and supporting bearings 5, wherein each set of triangular bracket 2 is assembled and assembled into a right-angled triangular framework in a factory or on site by a horizontal rod 21, an inclined rod 22, a vertical rod 23 and a web member 25, three pairs of supporting bearings 5 are symmetrically pre-embedded in two side walls of the bridge pier stud 1 along the bridge direction, the bottom end of the vertical rod 23 of the integrally assembled triangular bracket 2 is fixedly supported on the supporting bearings 5, the upper pore-forming pipeline 3 and the lower pore-forming pipeline 3 are horizontally arranged in the bridge pier stud 1 to form an upper horizontal pore channel and a lower horizontal pore channel, the axis of the pore-forming pipeline 3 is along the bridge direction, the upper pull rod 41 and the lower pull rod 42 respectively penetrate through the horizontal pore channels in the pore-forming pipeline 3 in the bridge pier stud 1 and are respectively symmetrically anchored along the middle upper portion and the middle lower, a certain pretension is applied in the rod members of the upper pull rod 41 and the lower pull rod 42, the triangular bracket 2, the upper pull rod 41, the lower pull rod 42 and the support 5 are fixedly connected to form a pair of cantilever pull rod type triangular brackets, and three pairs of cantilever pull rod assembly type triangular brackets are equidistantly arranged along the bridge direction of each bridge pier 1.
Example 3
As shown in figure 4, a cantilever pull rod assembly type triangular bracket comprises a bridge pier stud 1, triangular brackets 2, pore-forming pipelines 3, an upper pull rod 41, a lower pull rod 42 and supporting bearings 5, wherein each set of triangular brackets 2 is assembled into a right-angled triangular framework in a factory or on site by a horizontal rod 21, an inclined rod 22 and a vertical rod 23, three pairs of supporting bearings 5 are symmetrically embedded in two side walls of the bridge pier stud 1 along the bridge direction, the bottom end of the vertical rod 23 of the integrally assembled triangular bracket 2 is fixedly supported on the supporting bearings 5, the upper, middle and lower three pore-forming pipelines 3 are horizontally arranged in the bridge pier stud 1 to form an upper horizontal pore channel, a middle horizontal pore channel and a lower horizontal pore channel, the axis of the pore-forming pipelines 3 is along the bridge direction, the upper pull rod 41, the middle pull rod 43 and the lower pull rod 42 respectively penetrate through the horizontal pore channels in the pore-forming pipelines 3 in the bridge pier stud 1 and are respectively and symmetrically anchored along the middle horizontal pore channels of the vertical rod 23 of the triangular brackets 2, In the middle and middle lower parts, a certain pretension force is applied in the rod pieces of the upper pull rod 41 and the lower pull rod 42, the triangular bracket 2, the upper pull rod 41, the lower pull rod 42 and the supporting bearing 5 are connected and fixed to form a pair of cantilever pull rod type triangular brackets, and three pairs of cantilever pull rod assembly type triangular brackets are arranged in each bridge pier 1 along the bridge direction at equal intervals.
Example 4
As shown in figures 5-6, a cantilever pull rod assembly type triangular bracket comprises a bridge pier stud 1, a triangular bracket 2, pore-forming pipes 3, an upper pull rod 41, a lower pull rod 42 and supporting bearings 5, wherein each set of triangular bracket 2 is assembled into a right-angled triangular framework in a factory or on site by a horizontal rod 21, an inclined rod 22 and a vertical rod 23, three pairs of supporting bearings 5 are symmetrically pre-embedded on two side walls of the bridge pier stud 1 along the bridge direction, the bottom end of the vertical rod 23 of the integrally assembled triangular bracket 2 is fixedly supported on the supporting bearings 5, the upper pore-forming pipe 3 and the lower pore-forming pipe 3 are horizontally arranged in the bridge pier stud 1 to form an upper horizontal pore channel and a lower horizontal pore channel, the axis of the pore-forming pipe 3 is along the bridge direction, the upper pull rod 41 and the lower pull rod 42 respectively penetrate through the horizontal pore channels in the pore-forming pipes 3 in the bridge pier stud 1 and are respectively and symmetrically anchored on the middle upper portion and the middle lower portion of the vertical, a certain pretension is applied in the rod members of the upper pull rod 41 and the lower pull rod 42, the triangular bracket 2, the upper pull rod 41, the lower pull rod 42 and the supporting bearing 5 are fixedly connected to form a pair of cantilever pull rod type triangular brackets, three pairs of cantilever pull rod assembly type triangular brackets are arranged in each bridge pier 1 along the bridge direction at equal intervals, and the transverse connecting members 24 are arranged between the three pairs of cantilever pull rod assembly type triangular brackets on each side.
In the above embodiment:
the upper pull rod 41 and the lower pull rod 42 are made of one of steel bars, steel strands and FRP bars, the upper pull rod 41 is located in the range of 1/3 on the upper portion of the vertical rod 23 of the triangular bracket 2, the lower pull rod 42 is located in the range of 1/3 on the lower portion of the vertical rod 23 of the triangular bracket 2, and a plurality of middle pull rods 43 are arranged between the upper pull rod 41 and the lower pull rod 42.
The pore-forming pipeline 3 is one of a steel pipe, a cast iron pipe, an FRP pipe, a plastic pipe and a PVC pipe, and the diameter of the pore-forming pipeline is at least 2mm larger than the diameters of the upper pull rod 41 and the lower pull rod 42.
The supporting and bearing 5 is made of a section steel structure, a steel pipe filled concrete structure or a steel concrete laminated structure, the exposed length is not less than 50mm, and the embedded depth is not less than 100 mm.
The triangular brackets 2 are transversely arranged at intervals on the side wall of the bridge pier stud 1 along the bridge direction, the number of the triangular brackets is more than two pairs, and transverse connecting pieces 24 can be arranged between the adjacent triangular brackets 2.
The connecting mode of the horizontal rods 21, the inclined rods 22 and the vertical rods 23 in the triangular bracket 2 is one or more of welding, riveting and bolt connection, and a plurality of web members 25 are arranged among the horizontal rods 21, the inclined rods 22 and the vertical rods 23.
The triangular bracket 2 and the supporting support 5 are connected in an anchor bolt connection or welding connection mode.
Claims (8)
1. The utility model provides a cantilever pull rod assembled triangle bracket, including bridge pier stud (1), triangle bracket (2), pore-forming pipeline (3), go up pull rod (41), lower link (42), support bearing (5), a serial communication port, each set of triangle bracket (2) is by horizontal rod (21), down tube (22), montant (23) are assembled at mill or scene and are become a right angled triangle framework, symmetry pre-buried many pairs of support bearing (5) on two lateral walls of bridge pier stud (1) in the same direction as the bridge, the bottom fixed stay in support bearing (5) of montant (23) of triangle bracket (2) after whole assembly, a plurality of pore-forming pipeline (3) horizontal arrangement form a plurality of horizontal pore canals in bridge pier stud (1), and the axis of pore-forming pipeline (3) is along the bridge in the same direction as the bridge, go up pull rod (41) and lower link (42) and pass the horizontal pore canal in pore canal of pore-forming pipeline (3) in bridge pier stud (1) respectively and symmetry anchor respectively in the same direction as the bridge side of bridge Certain pretension is applied to the middle upper part and the middle lower part of the vertical rod (23) of the triangular bracket (2) on two sides of the bridge pier stud (1) in the rod pieces of the upper pull rod (41) and the lower pull rod (42), and the triangular bracket (2), the upper pull rod (41), the lower pull rod (42) and the supporting bearing (5) are connected and fixed to form the cantilever pull rod type triangular bracket.
2. The cantilever-pull-rod-assembled triangular bracket of claim 1, wherein the upper pull rod (41) and the lower pull rod (42) are one of steel bars, steel strands and FRP bars, the upper pull rod (41) is located within the range of 1/3 on the upper part of the vertical rod (23) of the triangular bracket (2), the lower pull rod (42) is located within the range of 1/3 on the lower part of the vertical rod (23) of the triangular bracket (2), and a plurality of middle pull rods (43) are arranged between the upper pull rod (41) and the lower pull rod (42).
3. The cantilever-pull-rod assembly type triangular bracket as claimed in claim 1, wherein the hole-forming pipe (3) is one of a steel pipe, a cast-iron pipe, an FRP pipe, a plastic pipe and a PVC pipe, and has a diameter at least 2mm larger than the diameters of the upper pull rod (41) and the lower pull rod (42).
4. The cantilever draw-bar fabricated triangular bracket according to claim 1, wherein the supporting and supporting members (5) are made of steel section structure, steel tube filled concrete structure or steel reinforced concrete laminated structure, the exposed length is not less than 50mm, and the embedded depth is not less than 100 mm.
5. The cantilever pull rod assembly type triangular bracket according to claim 1, wherein the triangular brackets (2) are arranged at intervals transversely on the side wall of the bridge pier column (1) along the bridge direction, the number of the triangular brackets is more than two pairs, and transverse connecting pieces (24) can be arranged between the adjacent triangular brackets (2).
6. The cantilever draw bar assembly type tripod rest according to claim 1, wherein the horizontal rods (21), the diagonal rods (22) and the vertical rods (23) in the tripod rest (2) are connected by one or more of welding, riveting and bolting, and a plurality of web members (25) are arranged among the horizontal rods (21), the diagonal rods (22) and the vertical rods (23).
7. A cantilever-pull-rod-assembly type tripod rest according to claim 1, wherein the connection between the tripod rest (2) and the supporting bracket (5) is an anchor connection or a welded connection.
8. A construction method of a cantilever pull rod assembly type triangular bracket is characterized by comprising the following steps:
A. pre-buried pore-forming pipeline and support bearing
Before the concrete placement of bridge pier stud (1), at bridge pier stud (1) the corresponding position department of the horizontal upper pull rod (41), lower pull rod (42) of direction of following the bridge, level, along the pre-buried pore-forming pipeline (3) of direction of following the bridge to the pre-buried many pairs of support bearing (5) of symmetry on two lateral walls of direction of following the bridge of bridge pier stud (1), the length that exposes of support bearing (5) is not less than 50mm, buries the degree of depth and is not less than 100 mm.
B. Pouring and curing concrete
And pouring concrete of the bridge pier stud (1) and curing to specified strength according to the standard.
C. Processing and assembling triangular bracket
The horizontal rods (21), the inclined rods (22) and the vertical rods (23) are respectively processed according to preset sizes, and the processed horizontal rods (21), inclined rods (22) and vertical rods (23) are assembled into a plurality of sets of triangular brackets (2) in a factory or on site.
D. An upper pull rod and a lower pull rod penetrate into the pore passage
And (2) penetrating the upper pull rod (41) and the lower pull rod (42) into the pore-forming pipeline (3) of the bridge pier column (1), wherein the length of the two sides of the upper pull rod (41) and the lower pull rod (42) which are respectively exposed out of the bridge pier column (1) is not less than 10 cm.
E. Hoisting and temporary fixing triangular bracket
The triangular bracket (2) is hoisted to the upper part of the supporting bearing (5), the lower part of the vertical rod (23) of the triangular bracket (2) is supported on the upper part of the supporting bearing (5), and the vertical rod (23) and the supporting bearing (5) are connected and fixed through welding and anchor bolt connection so as to temporarily fix the triangular bracket (2).
F. The triangular bracket is connected with the upper pull rod
The upper pull rods (41) are symmetrically tensioned on two sides, after tensioning is finished, the upper pull rods (41) are connected with the triangular brackets (2) on the two sides through anchor bolts, and the triangular brackets (2) on the two sides are connected symmetrically at the same time.
G. The triangular bracket is connected with the lower pull rod
The lower pull rods (42) are symmetrically tensioned on two sides, after tensioning is completed, the lower pull rods (42) are connected with the triangular brackets (2) on two sides through anchor bolts, and the triangular brackets (2) on two sides are connected symmetrically at the same time.
And connecting and fixing a plurality of pairs of triangular brackets on the side wall of the bridge pier column in sequence according to the steps to form the cantilever pull rod assembly type triangular bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289559.XA CN110847056A (en) | 2019-12-13 | 2019-12-13 | Cantilever pull rod assembly type triangular bracket and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289559.XA CN110847056A (en) | 2019-12-13 | 2019-12-13 | Cantilever pull rod assembly type triangular bracket and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110847056A true CN110847056A (en) | 2020-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911289559.XA Pending CN110847056A (en) | 2019-12-13 | 2019-12-13 | Cantilever pull rod assembly type triangular bracket and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960447A (en) * | 2022-06-15 | 2022-08-30 | 中铁上海工程局集团第五工程有限公司 | Cast-in-place roof beam support convenient to install fast |
-
2019
- 2019-12-13 CN CN201911289559.XA patent/CN110847056A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960447A (en) * | 2022-06-15 | 2022-08-30 | 中铁上海工程局集团第五工程有限公司 | Cast-in-place roof beam support convenient to install fast |
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