CN106087707A - A kind of accessory configurations preventing existing bridge lateral from toppling and construction method thereof - Google Patents

A kind of accessory configurations preventing existing bridge lateral from toppling and construction method thereof Download PDF

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Publication number
CN106087707A
CN106087707A CN201610605156.1A CN201610605156A CN106087707A CN 106087707 A CN106087707 A CN 106087707A CN 201610605156 A CN201610605156 A CN 201610605156A CN 106087707 A CN106087707 A CN 106087707A
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Prior art keywords
steel
plate
bridge
corbel
nut
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CN201610605156.1A
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CN106087707B (en
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杨悦
聂鑫
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Tsinghua University
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Tsinghua University
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00Structural or constructional details of bridges
    • E01D19/12Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125Grating or flooring for bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The present invention relates to a kind of accessory configurations preventing existing bridge lateral from toppling and construction method thereof, belong to bridge structure technical field.The present invention includes steel plate bottom floorings, troughing plate, steel bushing, steel corbel, steel anchor rod and nut.Planting muscle, anchor plate along bridge lateral both sides dabbing bottom floorings, steel plate is firmly connected with floorings by upper anchoring;Bottom troughing plate and floorings, steel plate is weldingly connected;Plant muscle in pier coping portion following certain altitude scope dabbing, be connected into steel bushing with two semicircle steel pipe connectings;Steel corbel is connected with steel bushing by welding;Oval hole is all reserved with on steel corbel bottom troughing plate;The diameter of steel anchor rod is less than elliptical aperture width, and vertically through reserving hole, two ends use nut to carry out twisting admittedly, wherein leave minim gap between lower end nut and bracket bottom surface.The present invention prevents the accessory configurations reasonable stress that existing bridge lateral topples, and draws materials easily, simple structure, and easy construction is economical and practical.

Description

A kind of accessory configurations preventing existing bridge lateral from toppling and construction method thereof
Technical field
A kind of accessory configurations preventing existing bridge lateral from toppling of the present invention, is applied to bridge deck and bridge pier in bridge structure Connecting portion, belong to bridge structure field.
Background technology
In Urban Road-Highway Bridges and bridge on highway are built, being affected by landform, atural object etc., bridge bottom bridge pier is often Use detached column or the support pattern of similar detached column, to reduce floor space, it is to avoid the layout conflict between building.Although solely Stub bridge has plurality of advantages such as simple for structure, strong adaptability, but the lateral stability of the bridge deck of its single-point support and peace Full property is poor, especially when there is the serious unbalance loading of vehicle, owing to the vertical displacement of top bridge floor only suffers restraints at middle part, thus Easily there is the bridge floor laterally overall serious accident toppled.
In order to improve the horizontal resistance to capsizing of existing bridge, do not change the stress performance of existing bridge and normally make simultaneously By state, needing the bearing to bridge to strengthen local structure and connect, main purpose is that increasing bridge deck is bearing eccentric load Time resistance to tipping moment, thus strengthen globality and the fastness of bridge deck structure.
Summary of the invention
The present invention proposes a kind of accessory configurations preventing existing bridge lateral from toppling being arranged on bridge pad position, uses In solving the existing highway bridge bearing problem that especially Single column pier bridge floor system resistance to capsizing is weak.Described prevents existing bridge The accessory configurations laterally toppled, mechanical concept is clear and definite, using the teaching of the invention it is possible to provide enough withdrawal resistances, the vertical displacement of constraint bridge deck, anti- The only generation of capsizing case, does not retrain the deformation that bridge deck causes due to concrete shrinkage and creep and temperature effects simultaneously, keeps away Exempt to cause additional stress inside bridge deck.Described accessory configurations, easy construction, construction period do not affects normally making of bridge With, it is economical and practical, it is easy to accomplish.
Technical scheme is as follows:
A kind of accessory configurations preventing existing bridge lateral from toppling, it is characterised in that described structure includes at the bottom of floorings Portion's steel plate, troughing plate, steel bushing, steel corbel, steel anchor rod and nut;Described steel plate plants muscle by dabbing bottom floorings, Rear pouring concrete, is transversely anchored in floorings two bottom sides, and steel plate is firmly connected with bridge deck by anchoring piece;Troughing plate Vertical flange plate by welding be connected with steel plate;Muscle is planted, with two semicircles in pier coping portion following certain altitude scope dabbing Shape steel pipe connecting is connected into after steel bushing casting concrete again;Steel corbel is connected (factory completes) by welding with steel bushing;In flute profile The horizonal web plate of steel plate oval hole all reserved with the upper lower flange of steel corbel;The diameter of steel anchor rod is less than elliptical aperture width, Vertically through reserving hole, troughing plate and steel corbel are socketed, use at steel anchor rod two ends nut to carry out twisting admittedly;Described Pre-embedded steel slab forms the box-like construction of hollow with troughing plate, and inside can accommodate the layout of nut and execute stubborn.
Described steel plate is to be connected with bottom bridge by anchoring piece, and the described steel bushing being linked to be by two semicircle steel pipes is then The bridge pier planting muscle with surface dabbing by peg and concrete is connected, and is welded with Welded-Stud Conectors, to meet power transmission inside steel bushing Demand, it is ensured that the reliability of connection.
The horizonal web plate of described troughing plate identical oval hole reserved with on the upper lower flange of steel corbel, institute simultaneously Position of opening is had to keep consistent vertical.The short axle of hole is parallel with bridge deck transverse direction, it is allowed to steel anchor rod passes, the length of hole Axle is parallel with bridge length direction, it is allowed to steel anchor rod slides wherein.
The diameter of described steel anchor rod is less than elliptical aperture width, vertically through the reserving hole of troughing plate with steel corbel, and two End uses nut to carry out twisting admittedly, leaves gap 3mm~5mm between lower end nut and bracket bottom surface.
A kind of construction method of the accessory configurations preventing existing bridge lateral from toppling, it is characterised in that the method include with Lower step:
A. along bridge lateral at anchor plate at the bottom of floorings;
The most prefabricated splicing completing troughing plate and perforate, pass through to be weldingly connected by itself and steel plate, form the box-shaped of hollow Structure;
C. steel bushing is vertically divided into two semicircle steel pipes, completes prefabricated processing in factory, and weld therein Welded-Stud Conectors, the two parts machined position at the scene and splice.
D. plant muscle in pier coping portion region dabbing, position and weld steel bushing, rear pouring concrete, steel bushing is fixed on bridge Pier top portion following certain altitude scope, this altitude range rule really will be according to structure demand;
E. be prefabricated in the factory the welding of steel corbel and perforate, and complete welding of steel corbel and semicircle steel bushing;
F. by steel anchor rod from bottom to top through steel corbel and the preformed hole of troughing plate, nut is used to twist at two ends Gu, between lower end nut and steel corbel bottom surface, leave gap 3mm~5mm.
The present invention has a following remarkable result relative to prior art:
(1) bridge deck and bracket are the most effectively being socketed by steel anchor rod, make bridge deck when bearing eccentric load, energy Enough produce enough resistance to tipping moment, it is to avoid bridge floor occurs even overall the toppling of excessive vertical displacement to lopsidedness; (2) bridge deck can slidably will not be caused due to concrete shrinkage and creep or temperature effects by steel anchor rod along bridge length direction Linear deformation produce constraint.(3) this tectonic dynamics definite conception, is readily obtained required resistance to plucking according to vehicle unbalance-loading situation Power, and then determine diameter and the quantity of required steel anchor rod, reasonable stress, draw materials easily, simple structure.(4) this structure is executed Work is convenient, and work progress does not affect the normal use of existing bridge, economical and practical, it is easy to accomplish.
Accompanying drawing explanation
Fig. 1 be the present invention elevation.
Fig. 2 is each ingredient relativeness perspective view of the present invention.
Fig. 3 is the A-A profile (not comprising nut 5 and the anchoring piece of steel plate 1) of Fig. 1.
In figure: steel plate bottom 1 floorings;2 troughing plates;3 steel bushings;4 steel corbels;5 steel anchor rods;6— Nut;7 existing bridge piers;8 plant muscle;9 Welded-Stud Conectors;Pouring concrete after 10.
Detailed description of the invention
Below in conjunction with accompanying drawing, structure, the work progress of the present invention is further described as follows.
As it is shown in figure 1, the accessory configurations preventing existing bridge lateral from toppling of the present invention include steel plate 1 bottom floorings, Troughing plate 2, steel bushing 3, steel corbel 4, steel anchor rod 5 and nut 6;Wherein bottom floorings, steel plate 1 passes through bottom floorings Dabbing plants muscle, rear pouring concrete, is transversely anchored in floorings two bottom sides, and is firmly connected with bridge deck by anchoring piece; The vertical flange plate of troughing plate 2 is connected with steel plate 1 by welding, forms the box-like construction of hollow, and inside can accommodate nut 6 Arrange and execute stubborn.Steel bushing 3 is formed by two semicircle fastener for connection, and prefabrication installs location after completing at the scene, parcel Pier coping portion region, uses the forms such as welding to splice, and steel corbel 4 is connected with steel bushing 3 by welding.
As in figure 2 it is shown, identical oval hole is reserved in the upper lower flange of the horizonal web plate of troughing plate 2 and steel corbel 4, All position of opening keep consistent vertical;The diameter of steel anchor rod 5 is less than elliptical aperture width, vertical through troughing plate 2 and steel The reserving hole of bracket 4.As depicted in figs. 1 and 2, the two ends of steel anchor rod 5 use nut 6 to carry out twisting admittedly, lower end nut and bracket Gap 3mm~5mm is left between bottom surface.To allow bridge deck along bridge longitudinally the most slidably, can be formed again simultaneously bridge deck with Socketing between bridge pier.
As shown in Figures 2 and 3,3 points of two halves of steel bushing have been prefabricated in the factory, and inside is welded with Welded-Stud Conectors 9 simultaneously.Existing Field plants muscle 8 in pier coping portion following certain altitude scope dabbing, positions steel bushing 3 and splices, pouring into rear pouring concrete 10, steel bushing 3 and existing bridge pier 7 are connected to become entirety.
As it is shown on figure 3, all reserve oval hole, the short axle of hole and bridge on troughing plate 2 horizonal web plate and steel corbel 4 Face system transverse direction is parallel, it is allowed to steel anchor rod 5 passes, and major axis is parallel with bridge length direction, and steel anchor rod 5 is freely slidable.
The construction method of the present invention is:
The accessory configurations preventing existing bridge lateral from toppling of the present invention, its construction method is as follows: along bridge lateral In anchor plate 1 at the bottom of floorings, steel plate is firmly connected with floorings by anchoring piece;Prefabrication completes the spelling of troughing plate 2 Connect and perforate, by its with floorings bottom steel plate 1 by being weldingly connected, form the box-like construction of hollow.By steel bushing 3 vertically It is divided into two semicircle steel pipes, completes prefabricated processing, and weld stud connector 9 therein, two machined in factory Part positions at the scene and splices.Plant muscle 8 in pier coping portion following certain altitude range areas dabbing, position and weld steel Sleeve 3, pours into rear pouring concrete 10, and steel bushing 3 is fixed on the top following certain altitude scope of existing bridge pier 7, this One altitude range rule really will be according to structure demand.Be prefabricated in the factory the welding of steel corbel 4 and perforate, and completes steel cattle Lower limb 4 welds with semicircle steel bushing 3.By steel anchor rod 5 from bottom to top through steel corbel 4 and the preformed hole of troughing plate 2, two End uses nut 6 to carry out twisting admittedly, completes, to socketing between bridge deck and bridge pier, to stay between lower end nut and steel corbel 4 bottom surface There is gap 3mm~5mm.It should be noted that Fig. 2 arranges the diameter of steel anchor rod 5 and quantity is not fixed, can be according to actual institute Need withdrawal resistance to be designed and arrange;In Fig. 2 and Fig. 3, the Main Function of Welded-Stud Conectors 9 is to be transmitted by the load on steel bushing 3 On existing bridge pier 7, diameter and the quantity of therefore required Welded-Stud Conectors 9 are also required to the boundary according to its actual transfer Face shear force calculation obtains.
The invention provides a kind of accessory configurations preventing existing bridge lateral from toppling, it is possible to bear eccentric lotus in bridge deck Enough resistance to tipping moment are provided during load, bridge deck (the especially bridge deck of Single column pier bridge) overall firm is greatly improved Property.This tectonic dynamics definite conception, reasonable stress, to draw materials easily, simple structure, easy construction, work progress does not affect existing The stress performance of bridge and being normally open to traffic, economical and practical, it is easy to accomplish.

Claims (5)

1. one kind prevents the accessory configurations that existing bridge lateral topples, it is characterised in that described structure includes bottom floorings Steel plate, troughing plate, steel bushing, steel corbel, steel anchor rod and nut;Described steel plate plants muscle by dabbing bottom floorings, after Pouring concrete, is transversely anchored in floorings two bottom sides, and steel plate is firmly connected with bridge deck by anchoring piece;Troughing plate Vertical flange plate is connected with steel plate by welding;Muscle is planted, by two semicircles in pier coping portion following certain altitude scope dabbing Steel pipe connecting is connected into after steel bushing casting concrete again;Steel corbel is connected with steel bushing by welding;Horizontal abdomen at troughing plate Plate oval hole all reserved with the upper lower flange of steel corbel;The diameter of steel anchor rod is less than elliptical aperture width, vertical through reserved Hole, sockets troughing plate and steel corbel, uses nut to carry out twisting admittedly at steel anchor rod two ends;Described pre-embedded steel slab and groove Shape steel plate forms the box-like construction of hollow, and inside can accommodate the layout of nut and execute stubborn.
The accessory configurations preventing existing bridge lateral from toppling the most according to claim 1, it is characterised in that described steel plate is Be connected with bottom bridge by anchoring piece, the described steel bushing being linked to be by two semicircle steel pipes then by peg and concrete with Surface dabbing is planted the bridge pier of muscle and is connected, and is welded with Welded-Stud Conectors, to meet power transmission demand inside steel bushing, it is ensured that connection reliable Property.
The accessory configurations preventing existing bridge lateral from toppling the most according to claim 1 and 2, it is characterised in that described groove The horizonal web plate of shape steel plate identical oval hole reserved with on the upper lower flange of steel corbel, the most all position of opening are perpendicular To keeping consistent, the short axle of hole is parallel with bridge deck transverse direction, it is allowed to steel anchor rod passes, and the major axis of hole is put down with bridge length direction OK, it is allowed to steel anchor rod slides wherein.
The accessory configurations preventing existing bridge lateral from toppling the most according to any one of claim 1 to 3, its feature exists In, the diameter of described steel anchor rod is less than elliptical aperture width, the vertical reserving hole through troughing plate with steel corbel, and two ends use Nut carries out twisting admittedly, leaves gap 3mm~5mm between lower end nut and bracket bottom surface.
5. the construction method of the accessory configurations preventing existing bridge lateral from toppling, it is characterised in that the method includes following Step:
A. along bridge lateral at anchor plate at the bottom of floorings;
The most prefabricated splicing completing troughing plate and perforate, pass through to be weldingly connected by itself and steel plate, form the box-like construction of hollow;
C. steel bushing is vertically divided into two semicircle steel pipes, completes prefabricated processing, and weld stud therein in factory Connector, the two parts machined position at the scene and splice.
D. plant muscle in pier coping portion region dabbing, position and weld steel bushing, rear pouring concrete, steel bushing is fixed on top of bridge pier Portion's following certain altitude scope, this altitude range rule really will be according to structure demand;
E. be prefabricated in the factory the welding of steel corbel and perforate, and completes welding of steel corbel and semicircle steel bushing;
F. by steel anchor rod from bottom to top through steel corbel and the preformed hole of troughing plate, nut is used to carry out twisting admittedly at two ends, under Gap 3mm~5mm is left between end nut and steel corbel bottom surface.
CN201610605156.1A 2016-07-27 2016-07-27 A kind of accessory configurations for preventing existing bridge lateral from toppling and its construction method Active CN106087707B (en)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN108086695A (en) * 2017-12-15 2018-05-29 浙江精工钢结构集团有限公司 A kind of attached shell type promotes frock and construction method
CN110835889A (en) * 2019-12-20 2020-02-25 招商局重庆交通科研设计院有限公司 Single-column pier type viaduct reinforcing device
CN111455881A (en) * 2020-04-22 2020-07-28 重庆交通大学 A antidumping reinforcing apparatus for single column mound bridge

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CN203160116U (en) * 2013-04-18 2013-08-28 东北林业大学 Overturning prevention bridge pier mechanism
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

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Publication number Priority date Publication date Assignee Title
JPH0941321A (en) * 1995-07-28 1997-02-10 Bridgestone Corp Base isolation method of bridge using existing bearing
CN102644244A (en) * 2012-05-04 2012-08-22 北京市市政工程设计研究总院 Antidumping reinforcing reinforce device for bridge and construction method thereof
CN202899019U (en) * 2012-11-13 2013-04-24 孙超 Slide clamp plate hook lock type box girder tilt preventing mechanism for bridges
CN203096599U (en) * 2013-03-01 2013-07-31 河海大学 Tension-compression rod type anti-toppling device of steel-and-concrete-combination beam bridge
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108086695A (en) * 2017-12-15 2018-05-29 浙江精工钢结构集团有限公司 A kind of attached shell type promotes frock and construction method
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CN110835889A (en) * 2019-12-20 2020-02-25 招商局重庆交通科研设计院有限公司 Single-column pier type viaduct reinforcing device
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CN111455881A (en) * 2020-04-22 2020-07-28 重庆交通大学 A antidumping reinforcing apparatus for single column mound bridge

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