CN107476191B - Slug matching installs the anchoring temporarily method of pier top box beam - Google Patents
Slug matching installs the anchoring temporarily method of pier top box beam Download PDFInfo
- Publication number
- CN107476191B CN107476191B CN201710582686.3A CN201710582686A CN107476191B CN 107476191 B CN107476191 B CN 107476191B CN 201710582686 A CN201710582686 A CN 201710582686A CN 107476191 B CN107476191 B CN 107476191B
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- pipe
- pier
- top box
- box beam
- pier top
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of anchoring temporarily methods that slug matching installs pier top box beam, include the following steps：1) fix first pipe on locating support, two openings of first pipe it is vertical upward；2) locating support is placed in pier shaft reinforcing bar, and pours pier shaft concrete；3) second pipe is buried in pier top box beam concrete；4) temporary rest pier is installed between the first pipe of pier shaft top surface；5) first pipe steel strand is first utilized in pier shaft concrete before pier top box beam is installed；6) steel strand wires are drawn when installing pier top box beam by second pipe and is raised to pier top box beam top surface, second pipe corresponds with first pipe and positioned at the surface of first pipe, and the support of pier top box beam is located on temporary rest pier；7) after jack tension steel strand wires make the value that its stretching force reaches setting, then with anchorage by steel strand anchoring in pier top box beam top surface.The present invention can resist the larger unbalanced moment of pier top box beam during the installation process.
Description
Technical field
The present invention relates to field of bridge construction.It is more particularly related to which a kind of slug matching installs pier top case
The anchoring temporarily method of beam.
Background technology
In the construction of bridge slug matching, the imbalance that pier top box beam needs resistance box beam to generate during the installation process is curved
Square.General construction method is to bury reserving hole in pier shaft, with steel strand wires by the bottom plate coagulation of pier top box beam from reserving hole
Native anchor, this method is adapted to when resisting unbalanced moment and being not very big, but the unbalanced moment if desired resisted is non-
When the underplate concrete of Chang great, pier top box beam are insufficient for force request, such method cannot meet construction requirement.
Invention content
It is an object of the invention to solve at least the above, and provide the advantages of at least will be described later.
It is a still further object of the present invention to provide a kind of anchoring temporarily methods that slug matching installs pier top box beam, use
Pier shaft, the pre-buried pre-stressed steel pipe of pier top box beam are solved pier shaft and pier top box beam in the mode of box beam top anchor with steel strand wires
It needs to resist larger unbalanced moment problem when short-term matches pile equipment.
In order to realize these purposes and other advantages according to the present invention, a kind of slug matching installation pier top case is provided
The anchoring temporarily method of beam, which is characterized in that include the following steps：
1) fix first pipe on the locating support of frame-type, two openings of the first pipe it is vertical upward；
2) locating support is placed in pier shaft reinforcing bar, and pours pier shaft concrete；
3) second pipe of corresponding vertical direction is buried in pier top box beam concrete；
4) concrete temporary rest pier is installed between the first pipe of pier shaft top surface；
5) first pipe steel strand is first utilized in pier shaft concrete before pier top box beam is installed, in every first pipe
Steel strand wires are more；
6) when installing pier top box beam by steel strand wires by pier top box beam concrete in inbuilt second pipe draw and be raised to pier
Top case top surface of the beam, second pipe corresponds with first pipe and positioned at the surface of first pipe, and pier top box beam is supported
It is located on temporary rest pier；
7) after jack tension steel strand wires make the value that its stretching force reaches setting, then with anchorage by steel strand anchoring in pier top
Box beam top surface.
Preferably, the first pipe and the second pipe are prestress pipe, and the two caliber is identical.
Preferably, four vertical support legs that the locating support includes pedestal, is fixed on the base, four branch
The upper end of support leg constitutes a horizontal rectangle, and the upper end of support leg is fixed with two crossbeams being mutually parallel and is mutually parallel
Two longerons, the first pipe is U-shaped structure, and two straight tubes of U-shaped structure are fixed on vertically respectively on two crossbeams, under
End is fixed on the base, and first pipe is arranged side by side more along the length direction of crossbeam.
Preferably, two straight tubes of the U-shaped structure of first pipe are also separately fixed on two longerons and two straight tubes
The rectangle diagonal line end positions of support leg upper end composition are located at, and the bottom end of first pipe is upper and lower inside locating support
It is interspersed.
Preferably, first the opening of first pipe is sealed up before pier shaft concrete is poured in step 2), is beaten after the completion of pouring
The opening of opening steel strand, first pipe is higher than 10~20cm of pier shaft top surface, and is not higher than temporary rest pier.
Preferably, its wall surface of the bend pipe outside vertical of the U-shaped structure of the first pipe, which is provided with, equally distributed is in
Radial reinforcing bar.
Preferably, the middle of pier shaft reinforcing bar is provided with the installation space of locating support, locating support be disposed vertically and
Its upper surface and pier shaft either flush, vertical height of the locating support in pier shaft reinforcing bar are 3 meters to 6 meters.
The present invention includes at least following advantageous effect：
1, using pier shaft, the pre-buried pre-stressed steel pipe of pier top box beam, with steel strand wires by pier shaft and pier top box beam on the top of box beam
The mode of portion's anchoring solves the problems, such as to need to resist larger unbalanced moment when short-term matches pile equipment.
2, ensure the structure safety in construction, improve the safety coefficient of anchoring temporarily.
3, ensure that interim prestress pipe position is accurate.
4, tensioning construction is more convenient.
Part is illustrated to embody by further advantage, target and the feature of the present invention by following, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the overall structure front view of the present invention；
Fig. 2 is the overall structure stereogram of the present invention；
Fig. 3 is the first form of the first pipe of the present invention；
Fig. 4 is second of form of the first pipe of the present invention；
Fig. 5 is the pier shaft of the present invention and the vertical view of temporary rest pier.
Specific implementation mode
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be noted that in the description of the present invention, term " transverse direction ", " longitudinal direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, and is not the dress of instruction or hint meaning
It sets or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as the limit to the present invention
System.
As shown in Fig. 1 to 5, the present invention provides a kind of anchoring temporarily method of slug matching installation pier top box beam, special
Sign is, includes the following steps：
1) first pipe 3 is fixed on the locating support for the frame-type made, general first pipe 3 is located at locating support
Inside, and make two of first pipe 3 be open positioned at the top of locating support and opening it is vertical upward, in advance the first pipe
Road 3 is fixed on locating support, facilitates later stage first pipe 3 to be accurately positioned fixation in pier shaft 2, locating support is usually iron
System, fixed mode is usually to weld；
2) locating support is placed in 2 reinforcing bar of pier shaft, the position of placement ensures that when later stage tension steel strand it will not be made
It is pulled, then pours 2 concrete of pier shaft, the moment is wanted to ensure that concrete does not enter first during pier shaft concreting
In pipeline 3；
3) second pipe 5 of corresponding vertical direction is buried in 1 concrete of pier top box beam, pier top box beam 1 is in making
In the process in advance according to the corresponding embedded corresponding second pipe 5 in the position of first pipe 3 in pier shaft 2, second pipe 5 is perpendicular
To being vertically arranged；
4) concrete temporary rest pier 6 is installed between 2 top surface first pipe 3 of pier shaft, temporary rest pier 6 is to support positioning
Pier top box beam 1, temporary rest pier 6 are set as position multiple and being arranged according to first pipe to be distributed in 3 top surface of pier shaft, and opposite
It is arranged symmetrically in pier top box beam 1, first pipe 3 is located between the gap of multiple temporary rest piers 6, and the steel strand wires that the later stage wears are from interim
It is passed into the gap of buttress 6 in second pipe 5；
5) 3 steel strand of first pipe, every first pipe 3 are first utilized in 2 concrete of pier shaft before installation pier top box beam 1
In steel strand wires be more, the radical of steel strand wires is arranged in the unbalanced moment size resisted as needed；
6) when installing pier top box beam 1 by steel strand wires by 1 concrete of pier top box beam in inbuilt second pipe 5 draw and be raised to
1 top surface of pier top box beam, second pipe 5 and first pipe 3 correspond and positioned at the surfaces of first pipe 3, and by pier top case
The support of beam 1 is located on temporary rest pier 6, and steel strand wires again will after passing through second pipe 5 to 1 top surface of pier top box beam from first pipe 3
Pier top box beam 1 supports in stationary positioned to temporary rest pier 6；
7) after jack tension steel strand wires make the value that its stretching force reaches setting, then with anchorage 7 by steel strand anchoring in pier
1 top surface of top case beam first passes through jack tension steel strand wires in 1 top surface of pier top box beam, works as tensioning after pier top box beam 1 fixes support
After power reaches the setting value of practice of construction needs, then with prestressing force profession anchorage 7 steel strand anchoring is lived, to complete entirely to face
When the process that anchors.
In another technical solution, the first pipe 3 and the second pipe 5 are prestress pipe, and the two pipe
Diameter is identical.
In another technical solution, four vertical support legs that the locating support includes pedestal, is fixed on the base, institute
The upper end for stating four support legs constitutes a horizontal rectangle, and the upper end of support leg be fixed with two crossbeams being mutually parallel and
Two longerons being mutually parallel, the first pipe 3 are U-shaped structure, and two straight tubes of U-shaped structure are fixed on two vertically respectively
On crossbeam, lower end is fixed on the base, and first pipe 3 is arranged side by side more along the length direction of crossbeam, the U of first pipe 3
Two straight tubes of type structure are also separately fixed on two longerons and two straight tubes are located at the rectangle of support leg upper end composition
Diagonal line end positions, and the bottom end of first pipe 3 is interspersed up and down inside locating support.
In this technical solution, the frame structure of locating support is defined, pedestal is in fact also as upper end by outside
Four beams fix, to which entire locating support can reach the fixed effect of positioning, while can also save material cost, the first pipe
Road is U-tube, and there are two types of set-up mode on locating support, it is equal inside locating support that one is the length directions along crossbeam
Even to be arranged side by side, U-tube is vertically arranged and upper end is fixed and is protruded from above crossbeam, and lower end is fixed on pedestal, solid on pedestal
It is fixed beam to fix end, and fixed beam both ends are perpendicularly fixed on the beam of chassis outer side, and fixed beam is arranged side by side, with U-tube
In the same plane, in order to which top is more firm, the branch parallel with longeron is arranged in the crossbeam length direction above locating support
Beam is supportted, another set-up mode of the U-tube on locating support there are two, and each two open upper ends, which are individually fixed in, determines
At the rectangle diagonal line both ends constituted above the holder of position, it is typically secured on adjacent longeron, two interlock in diagonal
U-tube bottom end be not fixed, be located inside locating support, and be interspersed up and down.As shown in Figures 3 and 4, first pipe
There are two types of forms according to situations such as the distance between its both ends for U-tube, and the straight tube of U-shaped pipe and bend pipe are in pier shaft concrete
Upper and lower position it is also different, as shown in Fig. 2, in contact point ratio Fig. 4 of first pipe straight tube and bend pipe shown in general Fig. 3
Shown in first pipe straight tube and bend pipe contacting points position it is low, first pipe installation is located in mode on locating support not
It is limited to this, as shown in Fig. 2, first pipe is interspersed and has certain law of symmetry up and down between each other, in Fig. 4
First pipe form generally runs through in total diagonal positions, and the first pipe form in Fig. 3 runs through at intermediate position,
In combination with vertical view shown in fig. 5.
First the opening of first pipe is sealed up before pouring pier shaft concrete in another technical solution, in step 2), is poured
Opening steel strand is opened after the completion, and the opening of first pipe is higher than 10~20cm of pier shaft top surface, and is not higher than temporary rest pier, is
Concrete in pier shaft concreting process is avoided to enter in first pipe, first by the opening above first pipe before pouring
It seals up, is opened again when having poured steel strand, while the opening of first pipe will protrude from pier shaft top surface certain distance, preferably
Ensure in pier shaft concreting process, the perforation of first pipe, prevents the blocking of concrete, corresponding pier shaft top surface from facing
When buttress height be greater than 20cm, specific height is determined according to practice of construction.
In another technical solution, its wall surface of the bend pipe outside vertical of the U-shaped structure of the first pipe is provided with uniformly
The radial reinforcing bar 4 of distribution.It is provided on the outside of the bend pipe of the U-shaped structure of inbuilt first pipe in pier shaft and hangs down with its wall surface
Straight and equally distributed reinforcing bar 4, since the stretching force applied before later stage anchoring procedure is very big, it is possible to pier shaft coagulation can be destroyed
Soil enters because some reinforcing bars 4 are arranged in pier shaft concrete, and reinforcing bar need not be also arranged too long, to first pipe and pier
There is certain prestressing force between body, pier shaft concrete can be protected to a certain extent.
In another technical solution, the middle of pier shaft reinforcing bar is provided with the installation space of locating support, and locating support hangs down
Straight placement and its upper surface and pier shaft either flush, vertical height of the locating support in pier shaft reinforcing bar are 3 meters to 6 meters.
The position that locating support is placed is generally in middle, while its upper surface and pier shaft either flush, and the first pipe of top is with regard to convex
For pier shaft top surface, pier shaft concrete, while the position according to interim prestressing force in pier shaft concrete, positioning branch are conveniently poured
Vertical height of the frame in pier shaft reinforcing bar is 3 meters to 6 meters, and height is suitable, too high to cause to waste, too small and can not meet and need
The prestressing force size wanted finally resists larger unbalanced moment to also just be not achieved.
Embodiment：
In Brunei's PMB bridges, the anchoring temporarily side of pier top box beam is installed using a kind of slug matching that we invents
Method can solve the problems, such as that pier top block box beam resistance unbalanced moment is very big, can ensure constructing structure safety.Conventional anchoring side
The resistible moment of flexure of method is 1000 tons or so, and utilizes the resistible moment of flexure of anchoring process of the present invention close to 3000 tons.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (7)
1. a kind of anchoring temporarily method of slug matching installation pier top box beam, which is characterized in that include the following steps：
1) fix first pipe on the locating support of frame-type, two openings of the first pipe it is vertical upward；
2) locating support is placed in pier shaft reinforcing bar, and pours pier shaft concrete；
3) second pipe of corresponding vertical direction is buried in pier top box beam concrete；
4) concrete temporary rest pier is installed between the first pipe of pier shaft top surface；
5) first pipe steel strand is first utilized in pier shaft concrete before pier top box beam is installed, the steel in every first pipe twists
Line is more；
6) when installing pier top box beam by steel strand wires by pier top box beam concrete in inbuilt second pipe draw and be raised to pier top case
Top surface of the beam, second pipe corresponds with first pipe and positioned at the surface of first pipe, and pier top box beam is supported and is positioned
On temporary rest pier；
7) after jack tension steel strand wires make the value that its stretching force reaches setting, then with anchorage by steel strand anchoring in pier top box beam
Top surface.
2. the anchoring temporarily method of slug matching as described in claim 1 installation pier top box beam, which is characterized in that described the
One pipeline and the second pipe are prestress pipe, and the two caliber is identical.
3. the anchoring temporarily method of slug matching installation pier top box beam as claimed in claim 2, which is characterized in that described fixed
The upper end of four vertical support legs that position holder includes pedestal, is fixed on the base, four support legs constitutes a level
Rectangle, and the upper end of support leg is fixed with two crossbeams being mutually parallel and two longerons being mutually parallel, first pipe
Road is U-shaped structure, and two straight tubes of U-shaped structure are fixed on vertically respectively on two crossbeams, and lower end is fixed on the base, and first
Pipeline is arranged side by side more along the length direction of crossbeam.
4. the anchoring temporarily method of slug matching installation pier top box beam as claimed in claim 3, which is characterized in that the first pipe
Two straight tubes of the U-shaped structure in road are also separately fixed on two longerons and two straight tubes are located at support leg upper end composition
Rectangle diagonal line end positions, and the bottom end of first pipe is interspersed up and down inside locating support.
5. the anchoring temporarily method of slug matching installation pier top box beam as described in claim 1, which is characterized in that step 2)
In pour pier shaft concrete before first the opening of first pipe is sealed up, pour after the completion of open opening steel strand, first pipe
Opening be higher than 10~20cm of pier shaft top surface, and be not higher than temporary rest pier.
6. the anchoring temporarily method of slug matching as claimed in claim 3 installation pier top box beam, which is characterized in that described the
Its wall surface of the bend pipe outside vertical of the U-shaped structure of one pipeline is provided with equally distributed radial reinforcing bar.
7. the anchoring temporarily method of slug matching installation pier top box beam as described in claim 1, which is characterized in that pier shaft steel
The middle of muscle is provided with the installation space of locating support, and locating support is disposed vertically and its upper surface and pier shaft either flush,
Vertical height of the locating support in pier shaft reinforcing bar is 3 meters to 6 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710582686.3A CN107476191B (en) | 2017-07-17 | 2017-07-17 | Slug matching installs the anchoring temporarily method of pier top box beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710582686.3A CN107476191B (en) | 2017-07-17 | 2017-07-17 | Slug matching installs the anchoring temporarily method of pier top box beam |
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| CN107476191A CN107476191A (en) | 2017-12-15 |
| CN107476191B true CN107476191B (en) | 2018-10-23 |
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2017
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