CN108487079A - A kind of the pier bottom rotation swivel construction method and system of double thin-wall piers - Google Patents
A kind of the pier bottom rotation swivel construction method and system of double thin-wall piers Download PDFInfo
- Publication number
- CN108487079A CN108487079A CN201810324642.5A CN201810324642A CN108487079A CN 108487079 A CN108487079 A CN 108487079A CN 201810324642 A CN201810324642 A CN 201810324642A CN 108487079 A CN108487079 A CN 108487079A
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- Prior art keywords
- double thin
- wall piers
- pier
- cushion cap
- wall
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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
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
-
- 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention provides the pier bottom rotation swivel construction methods of double thin-wall piers, include the following steps：(1) foundation pile, lower cushion cap and upper cushion cap are constructed, Rotary ball hinge is set between lower cushion cap and upper cushion cap；(2) the double thin-wall piers of pouring molding and girder, and during the double thin-wall piers of pouring molding, temporary support structure is provided between two pier walls of double thin-wall piers；(3) rotator construction is carried out by Rotary ball hinge；(4) after swivel is in place, temporary support structure is removed.The invention between two pier walls of double thin-wall piers by being arranged temporary support structure, so that improving the torsional rigidity of double thin-wall piers in construction by swing, temporary support structure is removed after the completion of rotator construction, in turn ensure the flexibility of bridge double thin-wall piers during operation, the rotation swivel construction method ensure that the safety during rotator construction and during operation simultaneously, the effective solution antitorque problem of swivel bridge flexible thin wall pier and beam body root.
Description
Technical field
The invention belongs to technical field of bridge construction, and in particular to a kind of pier bottom rotation swivel construction method of double thin-wall piers and
System.
Background technology
With the development of China's urban transportation, hinge of the bridge as urban transportation plays very important effect.It is double
Thin-wall piers are the bridge pier forms that the big or middle across footpath highway bridge in China is more commonly used at this stage, and construction features are on pier position
There are two the Dun Bi being mutually parallel and main beam pivot or the bridge pier just connect, and big to bending stiffness along bridge, thrust stiffness is small, can have
Effect reduces second inner force caused by temperature, concrete creep, pier displacement etc..The bridge construction of existing double thin-wall piers is generally using extension
Basket segmented construction needs in work progress that Hanging Basket is arranged in beam bottom.There are the feelings that junk is overboard during Hanging Basket section construction
Condition can increase the risk of lower section traffic normal operation in this way.And for railway, especially electrified high-speed railway, it is that cannot hold
By such risk.
In recent years, the reasons such as influence for the influence of the existing railway in operation of reduction or to municipal traffic under bridge, using swivel
The bridge of construction is more and more, and the bridge of rotator construction show from design angle overweight system, wide cut, great cantilever,
Cross-domain railway（Road）The features such as grade is high.
However, flat turn bridge is when turning startup, due to inertia, the superstructure of bridge is larger to bridge pier torque, thus
Swivel bridge has higher requirement to the torsional rigidity of bridge pier.Currently, for increasing torsional rigidity, the prior art is generally using anti-
The larger box-type section bridge pier of rigidity is turned round, come twisting resistance during resisting swivel, but not only torsional rigidity is big for box bridge pier, Zong Xiangkang
It is also larger to push away rigidity；And longitudinal direction thrust stiffness is excessive, after the completion of causing swivel, the excessive second inner force of bridge during operation makes
The stress for obtaining full-bridge is poor.
Therefore, it is necessary to design a kind of method of flat turn bridge pier not only to have ensured necessary flexibility during bridge pier operation, but also ensure bridge
Necessary rigidity during pier rotator construction.
Invention content
The object of the present invention is to provide a kind of pier bottom rotation swivel construction methods of double thin-wall piers so that structure both ensures bridge pier
Necessary flexibility during operation, and ensure necessary rigidity during bridge pier rotator construction, efficiently solve swivel bridge flexible thin
The antitorque problem of wall pier and beam body root.
The technical solution of the present invention is to provide a kind of pier bottom rotation swivel construction methods of double thin-wall piers, including walk as follows
Suddenly：
1) foundation pile, lower cushion cap and upper cushion cap are constructed successively from bottom to top, and Rotary ball hinge is set between lower cushion cap and upper cushion cap；
2) the double thin-wall piers of pouring molding on upper cushion cap, and girder pouring construction is carried out in double thin-wall piers, and pour and build up
During the double thin-wall piers of type, temporary support structure is provided between two pier walls of double thin-wall piers；
3) after the completion of girder pours, rotator construction is carried out by Rotary ball hinge；
4) after swivel is in place, the temporary support structure in double thin-wall piers is removed.
Further, the temporary support structure is antisymmetry purlin formula structure, and at the both ends of double thin-wall piers direction across bridge
It is respectively provided with temporary support structure.
Further, the temporary support structure includes pre-embedded steel slab and cross pipe support, and the pre-embedded steel slab setting exists
The both ends of the medial surface of two Dun Bi of double thin-wall piers, the cross pipe support are separately connected on two Dun Bi of double thin-wall piers
Pre-embedded steel slab.
Further, the pre-embedded steel slab on two Dun Bi of double thin-wall piers interlocks equidistantly distributed.
Further, the pre-embedded steel slab on the direction across bridge both ends of the same Dun Bi of double thin-wall piers staggeredly equidistantly divides
Cloth.
Further, connected using detachable assembly between the cross pipe support and pre-embedded steel slab of the temporary support structure
It connects.
Further, the cross pipe support of the temporary support structure uses steel pipe or shaped steel.
In addition, the present invention also provides a kind of pier bottom rotor systems of double thin-wall piers, including set gradually from bottom to top
Pile foundation, lower cushion cap, upper cushion cap, bridge pier and girder, be provided with Rotary ball hinge on the axis between the lower cushion cap and upper cushion cap,
The bridge pier is double thin-wall piers, and two pier wall medial surfaces of double thin-wall piers are provided with and increase swivel torsional rigidity for installing
Cross pipe support pre-embedded steel slab.
Further, the Rotary ball hinge includes upper flexural pivot and lower flexural pivot, and the lower flexural pivot is arranged in the lower cushion cap
In the middle part of top surface, the upper flexural pivot is arranged in the middle part of the bottom surface of the upper cushion cap, sphere-contact between the upper flexural pivot and lower flexural pivot.
Compared with prior art, beneficial effects of the present invention：
(1) the pier bottom rotation swivel construction method of this double thin-wall piers provided by the invention by double thin-wall piers two pier walls it
Between temporary support structure is set so that the torsional rigidity that double thin-wall piers are improved in construction by swing, in rotator construction
Temporary support structure is removed after the completion, in turn ensures the flexibility of bridge double thin-wall piers during operation, the rotation swivel construction method
It ensure that the safety during rotator construction and during operation simultaneously, effective solution swivel bridge flexible thin wall pier and beam body root
The antitorque problem in portion.
(2) temporary support structure uses opposition in the pier bottom rotation swivel construction method of this double thin-wall piers provided by the invention
Claim purlin formula structure, torque will be turned and be transmitted on two Dun Bi of double thin-wall piers, the connection of double thin-wall piers is integral, it improves
Bridge pier torsional rigidity.
(3) in the pier bottom rotation swivel construction method of this double thin-wall piers provided by the invention temporary support structure using removable
The assembly form unloaded, it is convenient for disassembly and assembly, can Reusability, saved project cost.
The present invention is described in further details below with reference to attached drawing.
Description of the drawings
Fig. 1 is the side structure schematic diagram of temporary support structure support bridge pier of the present invention；
Fig. 2 is in Fig. 1 along the directions A-A schematic cross-section.
Reference sign：1, pile foundation；2, lower cushion cap；3, upper cushion cap；4, bridge pier；5, cross pipe supports；6, pre-embedded steel slab；
7, girder；8, Rotary ball hinge.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term "center", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on ... shown in the drawings
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicated device or
Element must have a particular orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention,
" multiple ", " several " are meant that two or more.
As shown in Fig. 2, a kind of pier bottom rotor system of double thin-wall piers is present embodiments provided, including from bottom to top successively
Pile foundation 1, lower cushion cap 2, upper cushion cap 3, bridge pier 4 and the girder 7 of setting are arranged on the axis between the lower cushion cap 2 and upper cushion cap 3
There is Rotary ball hinge 8, the bridge pier 4 is double thin-wall piers, and two pier wall medial surfaces of double thin-wall piers are provided with and increase for installing
The pre-embedded steel slab 6 of the cross pipe support 5 of double rear screw dismount torsional rigidity.The pier bottom rotor system of this double thin-wall piers of the present embodiment
By the way that pre-embedded steel slab 6 is arranged in double thin-wall piers, 5 are supported to improve dual thin to install cross pipe in construction by swing
The torsional rigidity of wall bridge pier, and cross pipe support 5 is removed after the completion of rotator construction, double thin-wall piers during ensuring that operation
Necessary flexibility；In addition, the present embodiment is rotated together double thin-wall piers and girder 7 by the way of pier bottom swivel, compared to
Swivel working space is increased for pier top swivel mode, improves the safety of construction.Further, traditional bridge rotating system
Upper cushion cap 3 and bridge pier bottom are vertical connection (i.e. upper cushion cap 3 and cross section of the bridge pier 4 with same shape size), nothing in system
Method ensures structural strength, rigidity and stability；The cross section of the upper cushion cap 3 is more than the bridge pier 4 when the present embodiment designs
Cross section, effectively increase the rigidity of structure and intensity, when swivel, is more stable, construction with it is safer when runing.
Specifically, the pier bottom rotation swivel construction method of above-mentioned double thin-wall piers, includes the following steps：
(1) as shown in Fig. 2, constructing pile foundation 1, lower cushion cap 2 and upper cushion cap 3 successively from bottom to top, and in lower cushion cap 2 and upper cushion cap 3
Between be arranged Rotary ball hinge 8.Using percussive drill pore-forming, steel reinforcement cage is installed and concrete perfusion completes pile foundation 1 and constructs, in pile foundation
Pouring molding lower cushion cap 2 on 1, lower cushion cap 2 are support superstructure（Upper cushion cap 3, bridge pier 4 and girder 7）The basis of total weight,
Rotary ball hinge 8 is set in lower cushion cap 2, the upper cushion cap 3 of pouring molding is installed on Rotary ball hinge 8, bridge is realized by Rotary ball hinge 8
Pier pier bottom turns process.Optimization, Rotary ball hinge 8 includes upper flexural pivot and lower flexural pivot, and the lower flexural pivot is arranged in the lower cushion cap 2
Top surface in the middle part of, the upper flexural pivot is arranged in the middle part of the bottom surface of the upper cushion cap 3, and spherical surface connects between the upper flexural pivot and lower flexural pivot
It touches, since upper flexural pivot and lower flexural pivot are sphere-contacts, so as to reduce frictional force between the two, and then may be used smaller
Driving force to relatively rotate between lower cushion cap 2 and superstructure.
(2) the double thin-wall piers of pouring molding on upper cushion cap 3, and 7 pouring construction of girder is carried out in double thin-wall piers, together
When the double thin-wall piers of pouring molding during, temporary support structure is provided between two pier walls of double thin-wall piers, by facing
When support construction improve double torsional rigidities of the thin-wall piers during rotator construction.
As shown in Figure 1, the temporary support structure uses antisymmetry purlin formula structure, and the two of double thin-wall piers direction across bridge
End is respectively provided with temporary support structure, and the two thin of double thin-wall piers is transmitted to by torque is turned by the setting of temporary support structure
It is integral to connect double thin-wall piers on wall, improve the torsional rigidity of bridge pier.Specifically, the temporary support structure
Including pre-embedded steel slab 6 and cross pipe support 5, the pre-embedded steel slab 6 has several, is set along the axis direction interval of double thin-wall piers
The medial surface in two Dun Bi of double thin-wall piers is set, the cross pipe support 5 is across two Dun Bi of double thin-wall piers, both ends point
Pre-embedded steel slab 6 that Lian Jie be on two Dun Bi of double thin-wall piers, by cross pipe support 5 by two Dun Bi connections of double thin-wall piers
It is integral.Optimization, by the pre-embedded steel slab 6 on two Dun Bi of double thin-wall piers interlock equidistantly distributed so that even
It connects the support of the cross pipe between two pier walls of double thin-wall piers 5 to be obliquely installed, several between two pier walls of double thin-wall piers
Cross pipe support 5 is in turn connected to form symmetrical wave structure, and then further improves the torsional rigidity of bridge pier.And in order to make
The swivel torque that must be transmitted on the Dun Bi of double thin-wall piers is evenly distributed on thin-walled, double same Dun Bi's of thin-wall piers
Staggeredly equidistantly distributed turns torque and is transmitted to Dun Bi pre-embedded steel slab 6 on direction across bridge both ends in this way in construction by swing
Different location, further improve the torsional property of double thin-wall piers.
In addition, due to needing to ensure the necessary flexibility of double thin-wall piers during operation, thus need to subsequently remove interim branch
Support structure, the present embodiment for the ease of temporary support mechanism dismounting, by the cross pipe branch of the temporary support structure when design
Steel pipe or type are used using detachable assembled connection, the cross pipe support of the temporary support structure between support 5 and pre-embedded steel slab 6
Steel.
(3) after the completion of girder pours, rotator construction is carried out by Rotary ball hinge, in construction by swing, due to facing
When support construction setting so that double thin-wall piers with enough torsional rigidities come twisting resistance during resisting swivel；And it is turning
After in place, the temporary support structure removed in double thin-wall piers removes double thin-wall piers of temporary support structure during operation
With smaller second inner force and necessary flexibility, so as to improve the stress of full-bridge.
In conclusion the pier bottom rotation swivel construction method of this double thin-wall piers provided by the invention passes through in double thin-wall piers
Two pier walls between temporary support structure is set so that the torsional rigidity of double thin-wall piers is improved in construction by swing,
Temporary support structure is removed after the completion of rotator construction, in turn ensures the flexibility of bridge double thin-wall piers during operation, this turn
Body construction method ensure that the safety during rotator construction and during operation simultaneously, effective solution swivel bridge flexible thin wall
The antitorque problem of pier and beam body root.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
Be with the present invention it is same or analogous design all belong to the scope of protection of the present invention within.
Claims (9)
1. a kind of pier bottom rotation swivel construction method of double thin-wall piers, which is characterized in that include the following steps：
1) foundation pile, lower cushion cap and upper cushion cap are constructed successively from bottom to top, and Rotary ball hinge is set between lower cushion cap and upper cushion cap；
2) the double thin-wall piers of pouring molding on upper cushion cap, and girder pouring construction is carried out in double thin-wall piers, and pour and build up
During the double thin-wall piers of type, temporary support structure is provided between two pier walls of double thin-wall piers；
3) after the completion of girder pours, rotator construction is carried out by Rotary ball hinge；
4) after swivel is in place, the temporary support structure in double thin-wall piers is removed.
2. the pier bottom rotation swivel construction method of double thin-wall piers as described in claim 1, which is characterized in that the temporary support knot
Structure is antisymmetry purlin formula structure, and is respectively provided with temporary support structure at the both ends of double thin-wall piers direction across bridge.
3. the pier bottom rotation swivel construction method of double thin-wall piers as claimed in claim 2, which is characterized in that the temporary support knot
Structure includes pre-embedded steel slab and cross pipe support, and the medial surface in two Dun Bi of double thin-wall piers is arranged in the pre-embedded steel slab, described
The both ends of cross pipe support are separately connected the pre-embedded steel slab on two Dun Bi of double thin-wall piers.
4. the pier bottom rotation swivel construction method of double thin-wall piers as claimed in claim 3, which is characterized in that double thin-wall piers
Two Dun Bi on pre-embedded steel slab interlock equidistantly distributed.
5. the pier bottom rotation swivel construction method of double thin-wall piers as claimed in claim 3, which is characterized in that double thin-wall piers
Pre-embedded steel slab on the direction across bridge both ends of same Dun Bi interlocks equidistantly distributed.
6. the pier bottom rotation swivel construction method of double thin-wall piers as claimed in claim 3, which is characterized in that the temporary support knot
The cross pipe of structure, which is supported, to be connected between pre-embedded steel slab using detachable assembly.
7. the pier bottom rotation swivel construction method of double thin-wall piers as claimed in claim 3, which is characterized in that the temporary support knot
The cross pipe support of structure uses steel pipe or shaped steel.
8. a kind of pier bottom rotor system of double thin-wall piers, which is characterized in that including set gradually from bottom to top pile foundation, under hold
Platform, upper cushion cap, bridge pier and girder are provided with Rotary ball hinge on the axis between the lower cushion cap and upper cushion cap, and the bridge pier is
Double thin-wall piers, and two pier wall medial surfaces of double thin-wall piers are provided with for installing the cross pipe branch for increasing swivel torsional rigidity
The pre-embedded steel slab of support.
9. the pier bottom rotor system of double thin-wall piers as claimed in claim 8, which is characterized in that the Rotary ball hinge includes upper
Flexural pivot and lower flexural pivot, the lower flexural pivot are arranged in the middle part of the top surface of the lower cushion cap, and the upper flexural pivot is arranged in the upper cushion cap
Bottom surface in the middle part of, sphere-contact between the upper flexural pivot and lower flexural pivot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810324642.5A CN108487079A (en) | 2018-04-12 | 2018-04-12 | A kind of the pier bottom rotation swivel construction method and system of double thin-wall piers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810324642.5A CN108487079A (en) | 2018-04-12 | 2018-04-12 | A kind of the pier bottom rotation swivel construction method and system of double thin-wall piers |
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| Publication Number | Publication Date |
|---|---|
| CN108487079A true CN108487079A (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810324642.5A Pending CN108487079A (en) | 2018-04-12 | 2018-04-12 | A kind of the pier bottom rotation swivel construction method and system of double thin-wall piers |
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| CN (1) | CN108487079A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305039A (en) * | 2020-01-22 | 2020-06-19 | 长沙理工大学 | Device for improving stress distribution of swivel cable-stayed bridge and installation method thereof |
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| CN205232105U (en) * | 2015-12-16 | 2016-05-11 | 九格能源科技（天津）有限公司 | Can be applied to light and heat solar energy power generation's lattice column |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305039A (en) * | 2020-01-22 | 2020-06-19 | 长沙理工大学 | Device for improving stress distribution of swivel cable-stayed bridge and installation method thereof |
| CN111305039B (en) * | 2020-01-22 | 2021-06-01 | 长沙理工大学 | Device for improving stress distribution of swivel cable-stayed bridge and installation method thereof |
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Application publication date: 20180904 |