CN103015329A - I-section steel girder reinforcement small box girder structure - Google Patents

I-section steel girder reinforcement small box girder structure Download PDF

Info

Publication number
CN103015329A
CN103015329A CN2012105917060A CN201210591706A CN103015329A CN 103015329 A CN103015329 A CN 103015329A CN 2012105917060 A CN2012105917060 A CN 2012105917060A CN 201210591706 A CN201210591706 A CN 201210591706A CN 103015329 A CN103015329 A CN 103015329A
Authority
CN
China
Prior art keywords
steel
small box
girder
little
girders
Prior art date
Application number
CN2012105917060A
Other languages
Chinese (zh)
Inventor
饶少臣
严爱国
江荣丰
曾敏
Original Assignee
中铁第四勘察设计院集团有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 中铁第四勘察设计院集团有限公司 filed Critical 中铁第四勘察设计院集团有限公司
Priority to CN2012105917060A priority Critical patent/CN103015329A/en
Publication of CN103015329A publication Critical patent/CN103015329A/en

Links

Abstract

The invention discloses an I-section steel girder reinforcement small box girder structure. The structure comprises a road surface layer and small box girders arranged side by side on a pier, wherein an I-section steel girder is arranged between every two small box girders; the lower ends of the I-section steel girders are fixed at the lower end of the pier; and the upper ends of the I-section steel girders are fixed on flange plates fixed between every two adjacent small box girders. In the invention, the I-section steel girder reinforcement small box girder structure is adopted for the first time, and the new structure is added to bear forces; for inherent weaknesses that the horizontal force is weaker, the integrity is strengthened, so that the force condition becomes better, longitudinal stiffness is enlarged, and the horizontal force is improved; and the structure has the outstanding advantages of reliable technology, and small implementation risk.

Description

Steel I-beam is reinforced little box-beam structure
Technical field
The present invention relates to a kind of box-beam structure, refer to that particularly a kind of steel I-beam reinforces little box-beam structure.
Background technology
The measure of at present the little box-beam structure of highway bridge that needs reinforcement mainly being adopted mainly contains:
1, original structure is increased prestressing force: keep the original structure stress, longitudinal rigidity is constant, lateral stressedly do not improve, and be to excavate self potential, so increased the original structure actual burden.
2, former freely supported structure is changed into continuous structure: for behind the little case beam of continuous structure, longitudinal rigidity increases, the longitudinal stress performance improvement after changing, it is more smooth-going to drive a vehicle, but comparatively crucial lateral stressed problem does not improve, and difficulty of construction is large, and substructure is also had certain influence.
3, increase the concrete T-shaped beam sheet: the stressed and globality of vertical, horizontal all has larger improvement, and too conference causes that bridge pier and basis also need to process but the only problem increase is conducted oneself with dignity.
When highway bridge is used little box-beam structure, if the little case beam beam sheet lateral arrangement spacing globality to a certain degree just making easily bridge construction bigger than normal weakens larger, just may be because concentrating the stressed damage of effectively not disperseed to cause under Vehicle Load, bridge defect can spread gradually because defeating in detail effect, and all there is little case case bay problem bigger than normal to a certain extent in this class formation that disease occurs at present.So, strengthening laterally connecting the raising bridge integrity is the key problem in technology of this class disease of radical cure, and in the existing reinforcing technique that above-mentioned little case beam is reinforced: the first two item all can not improve the globality of existing disease bridge construction in the reinforcement measure, and the 3rd reinforcement measure can have much impact to bridge pier and basis too much because of the increase of beam structure weight.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, provide a kind of steel I-beam to reinforce little box-beam structure.This structure has increased new structural bearing strength, has strengthened globality for laterally weak intrinsic weakness, makes its stress condition better, and longitudinal rigidity increases, lateral stressed improvement, and reliable, the little outstanding advantages of enforcement risk possesses skills.
For achieving the above object, the designed a kind of steel I-beam of the present invention is reinforced little box-beam structure, comprise supercrust and place the little case beam that is arranged side by side on the bridge pier, be provided with steel I-beam between described two adjacent little case beams, described steel I-beam lower end is fixed on the bridge pier, and described steel I-beam upper end is fastened on two frange plates between the adjacent little case beam.
Further, the WELDING STUDS on the described steel I-beam and the frange plate of little case beam are connected and fixed
Construction Principle:
The first step, the partial dismantling guardrail is implemented the lateral stability measure of designing requirement, and unit in charge of construction also can take unlike other scheme a little less than this;
Second step is followed the construction fundamental order and is cut damaged bridge deck, removes wet seam and diaphragm;
In the 3rd step, finish corresponding repairing work project;
The 4th step, set up newly-increased steel longeron, distortion locking crossbeam is installed;
The 5th step, depend on the top flange of little case beam and steel longeron bed die (preferably being convenient to install and reusable punching block) is installed, build the wet seam of maintenance;
In the 6th step, repair, augment diaphragm;
In the 7th step, after laterally connection rebulid, dismounting and transfer lateral stability measure and distortion locking crossbeam arrived next Kong Liang;
In the 8th step, continuation treats that by other reinforcing of construction fundamental order complete design requirement all little case beams are disposed, and the construction bridge deck is noted shrinkage joint and the transition of striding with other hole.
Beneficial effect following points of the present invention:
1, the present invention adopts ' set up steel I-beam and reinforce little box-beam structure ' first, increased new structural bearing strength, strengthened globality for laterally weak intrinsic weakness, make its reasonable stress reliable, longitudinal rigidity increases, lateral stressed improvement, reliable, the little outstanding advantages of enforcement risk possesses skills.
2, the present invention sets up steel I-beam and former little box-beam structure and organically combines and form common stressed integral body, and construction uses gooseneck to strengthen lateral stability.
3, the present invention sets up a slice steel i beam between the little case beam of each sheet, and the i beam end face connects as one jointly stressed by WELDING STUDS and the wet seam of little case beam, reach the purpose that improves safety of structure by the vehicular load of sharing on the little case beam of former bridge.Jointly stressed in order to realize set steel i beam and little case beam, and share as much as possible some loads and reduce former little case beam load, the steel i beam need to arrange camber, in order to guarantee that camber does not affect wet seam and builds
Description of drawings
Fig. 1 is that steel I-beam is reinforced little box-beam structure schematic diagram.
Fig. 2 is that steel I-beam is reinforced the temporary measure schematic diagram of little box-beam structure in work progress.
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in the figure, the invention provides a kind of steel I-beam and reinforce little box-beam structure, comprise supercrust 2 and place the little case beam 1 that is arranged side by side on the bridge pier, be provided with steel I-beam 3 between described two adjacent little case beams, described steel I-beam 3 lower ends are fixed on the bridge pier 6, described steel I-beam 3 upper ends be fastened between two adjacent little case beams 1 frange plate on.Frange plate is formed by concreting.
The WELDING STUDS 5 of described steel I-beam 3 upper ends is connected and fixed with the frange plate of little case beam 1.
Work progress:
In the work progress, steel I-beam 3 lower ends use bolt 7 fixing with temporary steel crossbeam 4, and steel I-beam 3 lower ends and bridge pier are connected and fixed, and remove bolt 7 and temporary steel crossbeam 4 after construction finishes.Strengthened lateral stability by temporary steel crossbeam 4 among Fig. 2.

Claims (2)

1. a steel I-beam is reinforced little box-beam structure, comprise supercrust and place the little case beam that is arranged side by side on the bridge pier, it is characterized in that: be provided with steel I-beam between described two adjacent little case beams, described steel I-beam lower end is fixed on the bridge pier, and described steel I-beam upper end is fastened on two frange plates between the adjacent little case beam.
2. steel I-beam according to claim 1 is reinforced little box-beam structure, it is characterized in that: the WELDING STUDS of described steel I-beam upper end and the frange plate of little case beam are connected and fixed.
CN2012105917060A 2012-12-31 2012-12-31 I-section steel girder reinforcement small box girder structure CN103015329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012105917060A CN103015329A (en) 2012-12-31 2012-12-31 I-section steel girder reinforcement small box girder structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012105917060A CN103015329A (en) 2012-12-31 2012-12-31 I-section steel girder reinforcement small box girder structure

Publications (1)

Publication Number Publication Date
CN103015329A true CN103015329A (en) 2013-04-03

Family

ID=47964393

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012105917060A CN103015329A (en) 2012-12-31 2012-12-31 I-section steel girder reinforcement small box girder structure

Country Status (1)

Country Link
CN (1) CN103015329A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104386580A (en) * 2014-11-25 2015-03-04 无锡市晶瑜冶金机械有限公司 End box girder structure for aerial vehicle hoisting equipment
CN104652292A (en) * 2015-01-04 2015-05-27 中冶建筑研究总院有限公司 Reinforcement and reconstruction method of bridge deck structure of prestressed concrete trussed combination arch bridge
CN105178162A (en) * 2015-08-25 2015-12-23 张江涛 T-beam reinforcing structure and construction method thereof
CN106480815A (en) * 2016-11-17 2017-03-08 盐城工学院 A kind of box-type bridge splicing structure and installation method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694581A1 (en) * 1992-08-06 1994-02-11 Razel Freres Entreprise Method for widening existing concrete bridge decks - comprises placing precast prestressed or reinforced concrete beam longitudinally with bracket supported slabs under existing deck in gap
CN1483896A (en) * 2003-07-22 2004-03-24 上海市政工程设计研究院 Overhead bridge interval structure for track traffic
KR100808212B1 (en) * 2007-06-29 2008-02-29 노실근 The bridge upper structure pulling up for which construction bent for bridge upper structure pulling up and this were used
CN201738242U (en) * 2010-06-24 2011-02-09 中国一冶集团有限公司 Rigid supporting device for mounting of bridge transitional span T-shaped edge beam
CN102191745A (en) * 2011-04-02 2011-09-21 中国神华能源股份有限公司 Bridge
JP2011214315A (en) * 2010-03-31 2011-10-27 East Japan Railway Co Mounting structure of dynamic vibration absorber
CN102587296A (en) * 2012-02-21 2012-07-18 朔黄铁路发展有限责任公司 Self-balancing external prestressing strengthening method for bridge structure
CN102587286A (en) * 2012-03-28 2012-07-18 上海市第四建筑有限公司 Simply supported-continuous construction method for bridge superstructure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694581A1 (en) * 1992-08-06 1994-02-11 Razel Freres Entreprise Method for widening existing concrete bridge decks - comprises placing precast prestressed or reinforced concrete beam longitudinally with bracket supported slabs under existing deck in gap
CN1483896A (en) * 2003-07-22 2004-03-24 上海市政工程设计研究院 Overhead bridge interval structure for track traffic
KR100808212B1 (en) * 2007-06-29 2008-02-29 노실근 The bridge upper structure pulling up for which construction bent for bridge upper structure pulling up and this were used
JP2011214315A (en) * 2010-03-31 2011-10-27 East Japan Railway Co Mounting structure of dynamic vibration absorber
CN201738242U (en) * 2010-06-24 2011-02-09 中国一冶集团有限公司 Rigid supporting device for mounting of bridge transitional span T-shaped edge beam
CN102191745A (en) * 2011-04-02 2011-09-21 中国神华能源股份有限公司 Bridge
CN102587296A (en) * 2012-02-21 2012-07-18 朔黄铁路发展有限责任公司 Self-balancing external prestressing strengthening method for bridge structure
CN102587286A (en) * 2012-03-28 2012-07-18 上海市第四建筑有限公司 Simply supported-continuous construction method for bridge superstructure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104386580A (en) * 2014-11-25 2015-03-04 无锡市晶瑜冶金机械有限公司 End box girder structure for aerial vehicle hoisting equipment
CN104652292A (en) * 2015-01-04 2015-05-27 中冶建筑研究总院有限公司 Reinforcement and reconstruction method of bridge deck structure of prestressed concrete trussed combination arch bridge
CN105178162A (en) * 2015-08-25 2015-12-23 张江涛 T-beam reinforcing structure and construction method thereof
CN106480815A (en) * 2016-11-17 2017-03-08 盐城工学院 A kind of box-type bridge splicing structure and installation method
CN106480815B (en) * 2016-11-17 2018-04-24 盐城工学院 A kind of box-type bridge splicing structure and installation method

Similar Documents

Publication Publication Date Title
CN102758499B (en) Precast prestressed steel girder with post-seismic restorable function
Hu et al. Recent development of design and construction of medium and long span high-speed railway bridges in China
CN101603288B (en) Three-truss main girder structure of highway and railway bi-purpose cable-stayed bridge and installation method thereof
Nakamura et al. New technologies of steel/concrete composite bridges
CN101886468B (en) Construction method of suspension type template support in high-position conjoined structure
CN104831617A (en) Steel-super high performance concrete composite beam based on ribbed plate type bridge deck and construction method
CN106835951B (en) The replaceable prefabricated assembled combined beam structure of one kind and manufacturing process
CN101586328B (en) Anchor ear angle-table bracket building method for bridge sidespan closure segment construction
CN102220739B (en) Corrugated steel web prestressed concrete continuous box girder and construction method thereof
CN105863050A (en) Function-restorable assembly type wave web beam-column composite joint connection device
CN105297641B (en) Highway T beam diaphragm plate prestressed reinforcement structure and carry out the engineering method reinforced with it
CN103924505B (en) Use prefabricated steel-concrete combination T beam and the construction method of Wavelike steel webplate
KR101066838B1 (en) Double composite box girder and construction method using the same
CN103388303A (en) Horizontal splicing corrugated steel web plate combined box girder and construction method
Cheng et al. Experimental study of reinforced concrete and hybrid coupled shear wall systems
CN103938549B (en) The construction method of the oblique web combination beam of assembled waveform steel
CN103452053B (en) The antidumping bracing means of Single column pier bridge
CN204530418U (en) A kind of steel plate combination beam bridge
CN102364012B (en) Method for expanding existing large-span truss
CN101613997A (en) A kind of method for widening steel-concrete combination
CN105239720A (en) Prefabricated assembled steel-concrete composite beam connected by adopting high-strength bolt
CN205012666U (en) High altitude steel construction vestibule integrally lift up support structure
CN103741582B (en) A kind of prestressed concrete composite box-girder with corrugated steel webs and construction method thereof
CN205711701U (en) A kind of steel plate combination beam bridge pier consolidation structure
CN206667037U (en) Replaceable prefabricated assembled combined beam structure

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20130403

C12 Rejection of a patent application after its publication