CN204151701U - Single column pier bridge adds steel structure support overturning or slip resistance analysis bracing means - Google Patents

Single column pier bridge adds steel structure support overturning or slip resistance analysis bracing means Download PDF

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Publication number
CN204151701U
CN204151701U CN201420603900.0U CN201420603900U CN204151701U CN 204151701 U CN204151701 U CN 204151701U CN 201420603900 U CN201420603900 U CN 201420603900U CN 204151701 U CN204151701 U CN 204151701U
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CN
China
Prior art keywords
bracket
wedge
column pier
steel
slip resistance
Prior art date
Application number
CN201420603900.0U
Other languages
Chinese (zh)
Inventor
卢先荣
杜引光
江甫
秦现德
沈马可
王彬
Original Assignee
浙江省交通工程建设集团有限公司
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Application filed by 浙江省交通工程建设集团有限公司 filed Critical 浙江省交通工程建设集团有限公司
Priority to CN201420603900.0U priority Critical patent/CN204151701U/en
Application granted granted Critical
Publication of CN204151701U publication Critical patent/CN204151701U/en

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Abstract

The utility model discloses a kind of Single column pier bridge and add steel structure support overturning or slip resistance analysis bracing means, comprise steel work bracket and bearing lift-up device; Steel work bracket is set up in Single column pier both sides, and is connected to form shoulder pole girder by chemical anchor bolts and Single column pier, erection support lift-up device and bridge pad on it.Steel work bracket is combined by Plate Welding, can produce in factory in-site installation, can ensure the quality that makes and precision, steel work bracket is connected with Single column pier chemical anchor bolts, work progress does not need formwork erection, and simple scaffold can be constructed, and does not affect normal traffic.Bearing lift-up device simple installation is easy, and eliminate the complicated processes that jack jack up girder installs bridge pad, a spanner can by bridge pad installation in position.

Description

Single column pier bridge adds steel structure support overturning or slip resistance analysis bracing means
Technical field
The utility model relates to a kind of bridge strengthening device, especially can prevent the bracing means that Single column pier bridge topples.
Background technology
Single column pier bridge is little to occupy under-clearance, profile is succinct smooth, the light and handy feature such as attractive in appearance, is widely used in interchange place, but due to structure overturning or slip resistance analysis performance own bad, under overload Under Eccentric Loading, may there is overall Cross deformation thus cause beam body to topple in Single column pier bridge.In use having there is a lot of capsizing case in Single column pier bridge, causes casualties and economic loss, and in order to adopt remedial measures, Jin Liangnian China has carried out overturning or slip resistance analysis reinforcing to a large amount of Single column pier bridge.
In order to ensure the structural safety of existing Single column pier bridge, the potential safety hazard that effective means elimination Single column pier structure is toppled should be taked.Common method has two kinds: one changes Single column pier into wall type solid pier, then jack up girder, respectively installs an additional support seat in former bearing both sides, to reach the effect of overturning or slip resistance analysis; The second transform Single column pier as 3 stubs, jack up girder, and new pier stud installs additional support seat.Above two kinds of methods all need formwork erection concreting, and even need piling, complicated construction technique, the engineering time is long, and are subject to the restriction of under-clearance, particularly when oblique, change 3 stubs into and hardly may.In addition, additional support seat need take beam body jacking technique ability installation in position, and work progress need suspend traffic, and this makes the overturning or slip resistance analysis of existing Single column pier bridge reinforce and becomes complexity and the restriction being easily subject to range of application.
Summary of the invention
In order to overcome the deficiency that existing Single column pier bridge easily topples under overload Under Eccentric Loading, the utility model provides a kind of Single column pier bridge and adds steel structure support overturning or slip resistance analysis bracing means, this device effectively can not only resist the overturning moment that unbalance loading causes, and structure simple, install convenient, work progress does not affect normal traffic.
In order to solve the problems of the technologies described above, the following technical scheme that the utility model adopts:
A kind of Single column pier bridge adds steel structure support overturning or slip resistance analysis bracing means, it is characterized in that: described bracing means comprises steel work bracket 1 and bearing lift-up device 2; Steel work bracket 1 is set up in Single column pier both sides, and is connected to form shoulder pole girder, erection support lift-up device 2 and bridge pad 3 on it by chemical anchor bolts 9 and Single column pier.
As preferably, described steel work bracket 1 is welded by bracket web 4, bracket frange plate 5 and bracket stiffening rib 6 and combines, bracket web 4 has chemical anchors keyhole 8, steel work bracket 1 is fixed on Single column pier by chemical anchor bolts 9, and both sides steel work bracket 1 is connected into entirety by bracket contact plate 7.。
Described bearing lift-up device supports floor by support plate, wedge device and wedge and forms, by rotating adjusting bolt, the position of adjustable wedge, and then lifting support plate, jacking bridge pad.
Described support plate is welded to form by wedge ribs 11 at the bottom of holder base plate 10 and backing plate, both are by being welded to connect, and during jacking bridge pad 3, seat board baffle plate 14 is by the horizontal movement of restriction support plate, support plate can only vertically movement, and work progress Bridge bearing 3 can not produce shear strain.
Described wedge device is made up of wedge, adjusting bolt 16 and seat board baffle plate 14; Wedge is cancelled structure, is welded to form by wedge ribs 12, clapboard limited block 13 and wedge stiffening rib 15, and clapboard limited block 13 is welded on inside wedge ribs 12, and length is slightly shorter than the clear spacing between wedge ribs 12; Adjusting bolt 16 is welded on wedge side, and seat board baffle plate 14 is welded on steel work bracket 1 end.
Described wedge supports floor 17 and is welded in steel work bracket 1 top, plays position-limiting action for supports wedge block.
Build concrete between the bracket web 4 of Single column pier both sides, form complete overturning or slip resistance analysis stress system with steel work bracket 1.
The utility model is that direction across bridge arranges steel structure support at the bottom of the beam of Single column pier bridge, in order to resist the overturning moment that unbalance loading causes.Concrete measure is as follows: in Single column pier both sides, direction across bridge sets up steel work bracket, and steel work bracket and Single column pier are connected to form shoulder pole girder by chemical anchor bolts, and erection support lift-up device and bridge pad thereon; Answer concreting between the bracket web of both sides, to increase the rigidity of steel work bracket, form complete overturning or slip resistance analysis stress system; Finally by bearing lift-up device, bridge pad is in place.
The utility model key point is the lift-up device of bearing, and cardinal principle is that the horizontal pull of screw rod is converted into vertical top lift by wedge.The moment of torsion that the horizontal pull of screw rod is applied by adjusting bolt is transformed, more cleverly the horizontal pull of screw rod is converted into vertical top lift by wedge, can complete the installation to bridge additional support seat with common spanner.Abutment pressure is then controlled by the decrement of neoprene bearing.
The beneficial effects of the utility model are: under the prerequisite not affecting normal traffic, can carry out overturning or slip resistance analysis reinforcing to Single column pier bridge, be a kind of structure simple, convenient and work progress is installed by the Single column pier bridge overturning or slip resistance analysis bracing means of range of application restriction.The all parts of this device all can be prefabricated in the factory, and both ensure that quality and the precision of product, have greatly reduced again the time of site operation.Because this additional support is steel work, the bracket web of steel work bracket and bracket frange plate all can be used as the template of concreting, thus do not need to set up extra template and carry out concreting, only need simple scaffold to construct.The installation of bridge pad adopts wedge jacking mounting process, and complete the conversion from moment of torsion to vertical top lift by wedge device, installation process is simple and easy to do, and no longer rely on jack and carry out jack up girder, a spanner can by bearing installation in position.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is I-I top view of the utility model Fig. 1;
Fig. 3 is the elevation of the utility model steel work bracket;
Fig. 4 is the top view of steel work bracket shown in the utility model Fig. 3;
Fig. 5 is the lateral view of steel work bracket shown in the utility model Fig. 3;
Fig. 6 is the relativeness schematic diagram of the utility model bearing lift-up device;
Fig. 7 is the utility model support plate schematic diagram;
Fig. 8 is the upward view of structure shown in the utility model Fig. 7;
Fig. 9 is the utility model wedge device schematic diagram;
Figure 10 is the top view of structure shown in the utility model Fig. 9;
Figure 11 is the structural representation that the utility model wedge supports floor;
Figure 12 is the top view of structure shown in the utility model Figure 11;
In figure: 1, steel work bracket, 2, bearing lift-up device, 3, bridge pad, 4, bracket web, 5, bracket frange plate, 6, bracket stiffening rib, 7, bracket contact plate, 8, chemical anchors keyhole, 9, chemical anchor bolts, 10, holder base plate, 11, wedge ribs at the bottom of backing plate, 12, wedge ribs, 13, clapboard limited block, 14, seat board baffle plate, 15, wedge stiffening rib, 16, adjusting bolt, 17, wedge support floor.
Detailed description of the invention
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described further.
Embodiment: Single column pier bridge as shown in figs. 1-12 adds steel structure support overturning or slip resistance analysis bracing means, as long as comprise steel work bracket 1 and bearing lift-up device 2; Steel work bracket 1 is set up in Single column pier both sides, and is connected to form shoulder pole girder, erection support lift-up device 2 and bridge pad 3 on it by chemical anchor bolts 9 and Single column pier.
Total can be divided into two parts, and Part I is steel work bracket 1, and Part II is bearing lift-up device 2.Steel work bracket 1 is welded by bracket web 4, bracket frange plate 5 and bracket stiffening rib 6 and combines, bracket web 4 has chemical anchors keyhole 8, utilize chemical anchor bolts 9 to be fixed on pier stud by steel work bracket 1, then with bracket contact plate 7, both sides steel work bracket 1 is contacted integrally.
Bearing lift-up device each several part relative position is shown in Fig. 6, is made up of three parts: support plate, wedge device and wedge support floor.Support plate is welded to form by wedge ribs 11 at the bottom of holder base plate 10 and backing plate.Wedge device is made up of wedge, adjusting bolt 16 and seat board baffle plate 14, and wherein wedge is cancelled structure, is welded to form by wedge ribs 12, clapboard limited block 13 and wedge stiffening rib 15; Clapboard limited block 13 is welded on inside wedge ribs 12, and length is slightly shorter than the clear spacing between wedge ribs 11, and Main Function is the lateral displacement when wedge slip limit itself and support plate; Wedge stiffening rib 15 is welded between wedge ribs 12 and clapboard limited block 13, for strengthening the rigidity of Wedge device; Adjusting bolt 16 is welded in clapboard limited block 13 side, and Main Function torque axis is changed into horizontal pull to screw rod by spanner; Seat board baffle plate 14 is welded in steel work bracket 1 end, and Main Function is the horizontal movement of restriction support plate, only allows its vertical displacement; Wedge supports floor 17 and is welded in steel work bracket 1 top, plays position-limiting action for supports wedge block.
Implementation step:
(1) prefabrication steel work bracket;
(2) scene is set up scaffold and is holed on Single column pier;
(3) steel work bracket be installed and weld bracket contact plate;
(4) weld wedge and support floor and seat board baffle plate;
(5) bearing lift-up device is assembled;
(5) concreting between bracket web;
(6) reach after predetermined strength until concrete, bridge pad is placed on support plate, turn adjusting bolt jacking bearing;
Above-described embodiment is a kind of preferred version of the present utility model, not does any pro forma restriction to the utility model, also has other variant and remodeling not exceeding under the technical scheme prerequisite described in claim.

Claims (7)

1. Single column pier bridge adds a steel structure support overturning or slip resistance analysis bracing means, it is characterized in that: described bracing means comprises steel work bracket (1) and bearing lift-up device (2); Steel work bracket (1) is set up in Single column pier both sides, and is connected to form shoulder pole girder, erection support lift-up device (2) and bridge pad (3) on it by chemical anchor bolts (9) and Single column pier.
2. Single column pier bridge according to claim 1 adds steel structure support overturning or slip resistance analysis bracing means, it is characterized in that: described steel work bracket (1) is welded by bracket web (4), bracket frange plate (5) and bracket stiffening rib (6) and combines, bracket web (4) has chemical anchors keyhole (8), steel work bracket (1) is fixed on Single column pier by chemical anchor bolts (9), and both sides steel work bracket (1) are connected into entirety by bracket contact plate (7).
3. Single column pier bridge according to claim 1 adds steel structure support overturning or slip resistance analysis bracing means, it is characterized in that: described bearing lift-up device (2) supports floor (17) by support plate, wedge device and wedge and forms.
4. Single column pier bridge according to claim 1 adds steel structure support overturning or slip resistance analysis bracing means, it is characterized in that: described support plate is welded to form by wedge ribs (11) at the bottom of holder base plate (10) and backing plate.
5. Single column pier bridge according to claim 1 adds steel structure support overturning or slip resistance analysis bracing means, it is characterized in that: described wedge device is made up of wedge, adjusting bolt (16) and seat board baffle plate (14); Wedge is cancelled structure, be welded to form by wedge ribs (12), clapboard limited block (13) and wedge stiffening rib (15), clapboard limited block (13) is welded on wedge ribs (12) inner side, and length is slightly shorter than the clear spacing between wedge ribs (12); Adjusting bolt (16) is welded on wedge side, and seat board baffle plate (14) is welded on steel work bracket (1) end.
6. Single column pier bridge according to claim 1 adds steel structure support overturning or slip resistance analysis bracing means, it is characterized in that: described wedge supports floor (17) and is welded in steel work bracket (1) top.
7. Single column pier bridge according to claim 1 adds steel structure support overturning or slip resistance analysis bracing means, it is characterized in that: built concrete between the bracket web (4) of Single column pier both sides, formed complete overturning or slip resistance analysis stress system with steel work bracket (1).
CN201420603900.0U 2014-10-17 2014-10-17 Single column pier bridge adds steel structure support overturning or slip resistance analysis bracing means CN204151701U (en)

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CN201420603900.0U CN204151701U (en) 2014-10-17 2014-10-17 Single column pier bridge adds steel structure support overturning or slip resistance analysis bracing means

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104727235A (en) * 2015-03-31 2015-06-24 吴本刚 Bridge overall strengthening device
CN105421250A (en) * 2015-11-17 2016-03-23 上海市政工程设计研究总院(集团)有限公司 Anti-overturning structure for single-pier bridge girder
CN105421224A (en) * 2015-11-17 2016-03-23 上海市政工程设计研究总院(集团)有限公司 Intelligent supporting base
CN105970799A (en) * 2016-05-18 2016-09-28 清华大学 Structure for preventing bridge from overturning transversely and construction method of structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104727235A (en) * 2015-03-31 2015-06-24 吴本刚 Bridge overall strengthening device
CN105421250A (en) * 2015-11-17 2016-03-23 上海市政工程设计研究总院(集团)有限公司 Anti-overturning structure for single-pier bridge girder
CN105421224A (en) * 2015-11-17 2016-03-23 上海市政工程设计研究总院(集团)有限公司 Intelligent supporting base
CN105970799A (en) * 2016-05-18 2016-09-28 清华大学 Structure for preventing bridge from overturning transversely and construction method of structure
CN105970799B (en) * 2016-05-18 2018-04-10 清华大学 A kind of construction for preventing bridge lateral from toppling and its construction method

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