CN115045199A - Bridge large-scale steel support mounting method - Google Patents
Bridge large-scale steel support mounting method Download PDFInfo
- Publication number
- CN115045199A CN115045199A CN202210819564.2A CN202210819564A CN115045199A CN 115045199 A CN115045199 A CN 115045199A CN 202210819564 A CN202210819564 A CN 202210819564A CN 115045199 A CN115045199 A CN 115045199A
- Authority
- CN
- China
- Prior art keywords
- support
- positioning steel
- positioning
- pouring
- steel plate
- 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
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
- E01D19/04—Bearings; Hinges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a method for mounting a bridge large-sized steel support, and relates to the technical field of bridge construction. The method comprises the following steps: and constructing a support cushion stone, reserving an anchor bolt hole and setting a positioning steel bar at the support mounting position on the upper surface of the support cushion stone, and setting a positioning steel plate at the outer edge of one side close to the support mounting position. And installing the pouring template on the support base cushion, wherein the pouring template is positioned outside the support mounting position, and the top of the pouring template is higher than the positioning reinforcing steel bars. And pouring the grouting material into the pouring template until the grout overflows the top ends of the positioning reinforcing steel bars. And an anchoring bolt is arranged at the bottom of the support, and the support is hoisted to the position above the support cushion stone. Adjusting the position of the support, enabling one side of the support to be abutted to the positioning steel plate, placing the support on the positioning steel bar under the side in contact with the positioning steel plate, then placing the other side of the support on the positioning steel bar, and simultaneously inserting the anchoring bolt into the anchoring bolt hole. And cleaning the overflowed slurry, and removing the pouring template after the slurry is solidified to finish the support installation.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a method for installing a bridge large-sized steel support.
Background
Along with the development of social economy, large bridges are more and more in recent years. Along with the increase of bridge span, the support bearing capacity is higher and higher, and the support size grow thereupon, and unilateral length has exceeded 2.5m ~3m, leads to the installation degree of difficulty to increase, appears installing off normal, slope or the phenomenon of coming to nothing easily, shortens support life.
The traditional installation method of the large-scale steel support comprises a grouting method, a preset steel plate method and the like. The grouting method is characterized in that mounting holes are reserved in the base cushion stones, and when the base is mounted, shrinkage-free cement mortar is poured into gaps of 20-30 mm between the base and the cushion stones through a gravity method. The method for presetting the steel plate comprises the steps of arranging a lower embedded steel plate on a support base cushion, firstly installing a support base cushion template and a steel bar, then installing the lower embedded steel plate on the top surface of a cushion steel bar mesh, pouring cushion concrete after the adjustment is finished, connecting the support and an upper embedded steel plate assembly into a whole after the concrete strength reaches the design requirement, and then installing the upper embedded steel plate assembly on the top surface of the lower embedded steel plate to finish the support installation.
When the two installation methods are used for installing the large-size support, the phenomenon that air at the lower part of the support cannot be exhausted easily, and the bottom of the support is partially hollow due to air holes in slurry or concrete is easily caused, so that the bearing capacity of the support is reduced. Therefore, a new method for installing a large-sized support is needed to avoid local void at the lower part of the support while accurately and quickly installing the support.
Disclosure of Invention
In view of the above, the present invention provides a method for installing a bridge large steel support to solve the above problems.
Based on the aim, the invention provides a method for mounting a bridge large steel support, which comprises the following steps:
and constructing a support cushion stone, reserving an anchor bolt hole and setting a positioning steel bar at the support mounting position on the upper surface of the support cushion stone, and setting a positioning steel plate at the outer edge of one side close to the support mounting position.
And S2, installing the pouring template on the support base cushion, wherein the pouring template is positioned on the outer side of the installation position of the support base, and the top of the pouring template is higher than the positioning steel bars.
And S3, pouring grout into the pouring template until the grout overflows the top ends of the positioning steel bars.
And S4, installing an anchoring bolt at the bottom of the support, and hoisting the support above the support cushion.
S5, adjusting the position of the support to enable one side of the support to be abutted against the positioning steel plate, placing the side, in contact with the positioning steel plate, of the support on the positioning steel bar, placing the other side of the support on the positioning steel bar, and simultaneously inserting the anchoring bolt into the anchoring bolt hole.
And S6, cleaning the overflowed slurry, and removing the pouring template after the slurry is solidified to finish the support installation.
Compared with the prior art, the invention has the beneficial effects that:
1. pour the grout material earlier to pouring in the template, hoist the support to the support base stone on again, the support extrudees the grout material of support base stone top, extrudees unnecessary grout material, and the air of discharging simultaneously, support compress tightly the grout material to with support base stone zonulae occludens, reduce the existence of gas pocket, avoid the emergence of local sky problem, improve the support installation quality.
2. The mounting height of the support is limited through the positioning steel bars, the mounting position of the support is limited through the positioning steel plates, when the support is mounted, the process of repeatedly adjusting the position of the support is reduced, the mounting difficulty of a large-scale steel support is reduced, and the construction efficiency is improved.
Further, the concrete steps of constructing the support base cushion stone in S1 include: installing a support base cushion template;
positioning steel bars are respectively arranged at the end corners of the mounting position of the support, wherein the positioning steel bars on one side are tightly attached to the edge of the mounting position of the support; a positioning steel plate is arranged on the side edge perpendicular to the mounting position of the support, one side of the positioning steel plate is tightly attached to a positioning steel bar at the edge of the mounting position of the support, and the other side of the positioning steel plate is tightly attached to the inner side of the pouring template; pouring concrete into the support base cushion template, and reserving anchor bolt holes; and after the concrete is formed, chiseling the surface of the concrete, leaking the rough bone, wetting the surface of the concrete by water, and removing impurities and accumulated water on the surface of the concrete and in the holes of the anchor bolts to finish the construction of the support base pad stone.
Further, a sealing rubber strip is arranged between the pouring template and the support base cushion stone; prevent that the thick liquid from the gap outflow, influence the installation quality.
Further, before S2, the method further includes: respectively checking the position of the positioning steel bar, the elevation of the top surface of the positioning steel bar, the position of an anchoring bolt hole, the size of the anchoring bolt hole and the position of a positioning steel plate; the accuracy of the mounting position of the support is guaranteed.
Drawings
FIG. 1 is a schematic view of a support base stone of a method for installing a bridge large-scale steel support according to an embodiment of the present invention;
FIG. 2 is a schematic view of a pouring template in the method for installing a bridge large-scale steel support according to the embodiment of the invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic support installation diagram of the bridge large-scale steel support installation method provided by the embodiment of the invention.
Labeled as: 1. a support base cushion stone template; 2. a support base cushion stone; 3. a support mounting position; 4. an anchor bolt hole; 5. positioning a steel plate; 6. positioning the reinforcing steel bars; 7. pressing the slurry; 8. sealing rubber strips; 9. a support; 10. an anchor bolt; 11. and (6) pouring a template.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to specific embodiments below.
The invention provides a method for mounting a bridge large-sized steel support 9, which comprises the following steps:
and S1, as shown in figure 1, installing the support base cushion stone template 1, wherein the support base cushion stone template 1 is of a rectangular structure. And the end corners of the support mounting positions 3 are respectively provided with positioning steel bars 6, the positioning steel bars 6 are vertically arranged and used for limiting the mounting height of the support 9, and the positioning steel bars 6 on one side are tightly attached to the edges of the support mounting positions 3. In the embodiment, a steel bar with the diameter of 32mm is selected as the positioning steel bar 6, and the top surface elevation of the positioning steel bar 6 is the bottom surface elevation of the support 9.
Perpendicular to support mounting position 3's side installation location steel sheet 5, the vertical setting of location steel sheet 5, the spacer bar 6 that is located support mounting position 3 edge is hugged closely to one side of location steel sheet 5, and the template 11 inboard is pour hugged closely to the opposite side of location steel sheet 5, restricts support mounting position 3 through location steel sheet 5. Through the mounting height of 6 restriction supports 9 of spacer bar, through the mounted position of 5 restriction supports 9 of location steel sheet, when carrying out the installation of support 9, reduced the process of adjusting the 9 positions of support repeatedly, reduced the installation degree of difficulty of large-scale steel support 9, improve the efficiency of construction.
And a pre-buried pipe is arranged at the mounting position 3 of the support and is used for reserving an anchor bolt hole 4 in the support cushion stone 2. Concrete is poured into the support base cushion stone template 1, and the embedded pipe, the positioning steel bars 6 and the positioning steel plates 5 are prevented from being collided in the pouring process. And after the concrete is formed and the strength reaches the design requirement, roughening the surface of the concrete, leaking out the rough bone, wetting the surface of the concrete by using water, removing impurities and accumulated water on the surface of the concrete and in the anchoring bolt hole 4, and finishing the construction of the support base cushion 2.
And S2, respectively checking the position of the positioning steel bar 6, the top surface elevation of the positioning steel bar 6, the position of the anchor bolt hole 4, the size of the anchor bolt hole 4 and the position of the positioning steel plate 5. The position size and the like of each part are ensured to meet the design requirements, and the elevations of the top surfaces of all the positioning reinforcing steel bars 6 are consistent.
After the inspection is finished, the pouring template 11 is installed, as shown in fig. 2, the pouring template 11 is installed on the support base cushion stone 2, the pouring template 11 is a rectangular template, and sealing rubber strips 8 are installed at the splicing part of the pouring template 11 and between the pouring template 11 and the support base cushion stone 2, so that grout is prevented from flowing out of gaps and affecting the installation quality. As shown in fig. 3, the casting mold 11 is located outside the pedestal mounting position 3, and the top of the casting mold 11 is higher than the positioning steel bar 6, in this embodiment, the top surface of the casting mold 11 is set to be 610mm higher than the positioning steel bar.
And S3, pouring the prestressed duct grouting material 7 into the pouring template 11 until the grouting material overflows the top ends of the positioning steel bars 6.
And S4, installing the anchor bolt 10 at the bottom of the support 9, and hoisting the support 9 above the support cushion stone 2 by using a crane.
And S5, as shown in figure 4, adjusting the position of the support 9, hoisting the support 9 above the support mounting position 3, and suspending the support 9 at a position 5cm above the slurry. One side of the support 9 is abutted to the positioning steel plate 5, one side of the support 9, which is in contact with the positioning steel plate 5, is slowly lowered onto the positioning steel bar 6, the other side of the support 9 is lowered onto the positioning steel bar 6 on the corresponding side, and meanwhile, the anchor bolt 10 is inserted into the anchor bolt hole 4.
And S6, cleaning the overflowed slurry, and performing health maintenance after the slurry is initially set. And (3) after the slurry is solidified and the strength meets the construction design requirement, removing the pouring template 11, cutting off the positioning template, and performing anticorrosion treatment on the part leaking out of the surface of the slurry to finish the installation of the support 9.
Therefore, in the method, the grouting material 7 is poured into the pouring template 11, then the support 9 is hoisted to the support base cushion stone 2, the support 9 extrudes the grouting material 7 above the support base cushion stone 2, redundant grouting material 7 is extruded, air is exhausted at the same time, and the support 9 compresses the grouting material 7, so that the grouting material is tightly connected with the support base cushion stone 2, the existence of air holes is reduced, the problem of local air release is avoided, and the installation quality of the support 9 is improved.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. A method for mounting a bridge large-sized steel support is characterized by comprising the following steps:
s1, constructing a support base cushion stone, reserving an anchor bolt hole and arranging a positioning steel bar at the support base mounting position on the upper surface of the support base cushion stone, and arranging a positioning steel plate at the outer edge of one side close to the support base mounting position;
s2, mounting the pouring template on a support base cushion, wherein the pouring template is positioned outside the mounting position of the support base, and the top of the pouring template is higher than the positioning steel bars;
s3, pouring grout into the pouring template until the grout overflows the top ends of the positioning steel bars;
s4, mounting an anchoring bolt at the bottom of the support, and hoisting the support above the support cushion stone;
s5, adjusting the position of the support to enable one side of the support to be abutted against the positioning steel plate, placing the side, which is in contact with the positioning steel plate, of the support on the positioning steel bar, then placing the other side of the support on the positioning steel bar, and simultaneously inserting the anchoring bolt into the anchoring bolt hole;
and S6, cleaning the overflowed slurry, and removing the pouring template after the slurry is solidified to finish the support installation.
2. The method for installing the bridge large steel support according to claim 1, wherein the concrete steps of constructing the support pad stone in the step S1 include:
mounting a support base cushion template;
positioning steel bars are respectively arranged at the end corners of the mounting position of the support, wherein the positioning steel bars on one side are tightly attached to the edge of the mounting position of the support;
a positioning steel plate is arranged on the side edge perpendicular to the mounting position of the support, one side of the positioning steel plate is tightly attached to a positioning steel bar at the edge of the mounting position of the support, and the other side of the positioning steel plate is tightly attached to the inner side of the pouring template;
pouring concrete into the support base cushion template, and reserving anchor bolt holes;
and after the concrete is formed, roughening the surface of the concrete, leaking out coarse aggregate, wetting the surface of the concrete by using water, and removing impurities and accumulated water on the surface of the concrete and in the holes of the anchor bolts to finish the construction of the support base cushion.
3. The method for installing the bridge large steel support according to claim 1, wherein a sealing rubber strip is installed between the pouring template and the support pad.
4. The method for installing the bridge large steel support according to claim 1, further comprising, before S2: and respectively checking the position of the positioning steel bar, the elevation of the top surface of the positioning steel bar, the position of the anchoring bolt hole, the size of the anchoring bolt hole and the position of the positioning steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819564.2A CN115045199A (en) | 2022-07-13 | 2022-07-13 | Bridge large-scale steel support mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819564.2A CN115045199A (en) | 2022-07-13 | 2022-07-13 | Bridge large-scale steel support mounting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115045199A true CN115045199A (en) | 2022-09-13 |
Family
ID=83165012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210819564.2A Pending CN115045199A (en) | 2022-07-13 | 2022-07-13 | Bridge large-scale steel support mounting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115045199A (en) |
-
2022
- 2022-07-13 CN CN202210819564.2A patent/CN115045199A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205676785U (en) | Leveling block formwork for placing device at the bottom of a kind of Bridge Support Replacement beam | |
| CN110258333A (en) | The jig structure and its application method of leveling connection are quickly positioned for Precast Pier Columns | |
| CN105133768A (en) | Cast-in-place hollow floor provided with large-section BDF box bodies and construction method of cast-in-place hollow floor | |
| CN110644371A (en) | Prefabricated capping beam installation method and system | |
| CN110700023A (en) | Steel spring floating plate integral ballast bed construction method based on rail engineering | |
| CN207775938U (en) | A kind of monoblock type walling crib construction formwork removing device of inspection shaft | |
| CN109610338B (en) | Construction method for preventing slurry leakage at bottom opening of tower column of suspension bridge | |
| CN115045199A (en) | Bridge large-scale steel support mounting method | |
| CN210105373U (en) | Replacement, reinforcement and support device for concrete building shear wall | |
| CN217601194U (en) | Bridge large-scale steel support mounting structure | |
| CN204960084U (en) | Adopt cast -in -place hollow floor slab of big cross -section BDF box | |
| CN113756601B (en) | Frame column replacement reinforcement construction method | |
| CN109138284A (en) | A kind of precast prestressed T plate and preparation method thereof with skylight | |
| CN112140290B (en) | Pouring method for prefabricated bridge deck | |
| CN209942156U (en) | Smoke air duct mounting structure | |
| CN109291208B (en) | Large-span prestressed concrete double-T-plate construction method | |
| CN104234432B (en) | Shed deckhead construction method | |
| KR200233607Y1 (en) | Low Plate Structure of the Bridge Bearing | |
| CN110578298A (en) | Concrete pouring process for top of viaduct upright post | |
| CN217027759U (en) | Steel bar protective layer cushion block | |
| CN211842440U (en) | Prefabricated T roof beam height turnover die carrier | |
| CN213710402U (en) | A bottom plate support for steel bar is quilted and is put up building carrier plate | |
| CN213297137U (en) | Formwork reinforcing device for improving concrete construction quality of falling plate type toilet | |
| CN213173318U (en) | Device for synchronous construction method of support base cushion stone pouring and support base installation | |
| CN113958080B (en) | Grouting type lump material paving method |
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 |