CN105951613A - Combined type pre-stress steel cross diaphragm beam, reinforcing system and reinforcing method thereof - Google Patents
Combined type pre-stress steel cross diaphragm beam, reinforcing system and reinforcing method thereof Download PDFInfo
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- CN105951613A CN105951613A CN201610541230.8A CN201610541230A CN105951613A CN 105951613 A CN105951613 A CN 105951613A CN 201610541230 A CN201610541230 A CN 201610541230A CN 105951613 A CN105951613 A CN 105951613A
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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Abstract
The invention provides a combined type pre-stress steel cross diaphragm beam, a reinforcing system and a reinforcing method thereof. The combined type pre-stress steel cross diaphragm beam comprises a first cross beam, a middle cross beam and a second cross beam which are connected in sequence in the horizontal direction; the tail end of the first cross beam and the front end of the second cross beam are in sleeving joint with the two ends of the middle cross beam; the tail end of the first cross beam is further connected with a pre-stress loading mechanism; the pre-stress loading mechanism is located in the middle cross beam; the reinforcing system can be used for effectively solving the problem that side faces of adjacent main girder webs are not smooth; the integrity of an old bridge and a newly arranged reinforcing structure is better, the whole performance is improved and the reinforcing quality is guaranteed; the pre-stress loading mechanism is arranged and the cross diaphragm beam is actively cooperated with a whole bridge to work when compared with previous passive stressing, so that the whole working performance of the bridge is improved; meanwhile, the construction difficulty can also be reduced and the working efficiency is improved. The combined type pre-stress steel cross diaphragm beam can be widely applied to old bridge reinforcing construction of an assembling type simply supported bridge or reinforcing construction of other similar bridge structures.
Description
Technical field
The present invention relates to old bridge strengthening construction field, a kind of combination type prestressed steel diaphragm hardened system and reinforcement means thereof.
Background technology
China's active service bridge major part is to found the state to build later, and along with the increase of the operation time limit, load carrying capacity of bridge reduces year by year, the bridge built particularly in the past, and design standard difference, bearing capacity does not the most adapt to the needs of transport development.And bridge is along with the growth of service life, naturally arise that the series of problems such as the surface carbonation of concrete, crack increasing, surface fracture, rainwater intrusion, steel bar corrosion, ultimately result in the depression of bearing force of bridge, disease occurs, becoming disease bridge, unsafe bridge, severe patient even causes bridge collapse.
In urban road medium and small bridges, Fabricated Simple Supported Beams slab bridge proportion is the biggest at present, it is easy to crack that this structure experiences long-time load action junction, cause the situation that lateral ties are the best, bridge integrity can differ from, under overload, local function, it is susceptible to destroy thus causes bridge security accident.It is a kind of common Fabricated Simple Supported Beams slab bridge reinforcing mode that steel diaphragm is reinforced, but when the most general steel diaphragm used is reinforced, there are the following problems:
1) during most steel diaphragms are reinforced, girder is connected by anchor bolts with newly-increased crossbeam, and anchor bolts can produce loosening under construction deviation and long-term dynamic loading, causes setting up crossbeam and the phenomenon of " distortion " occurs, affect consolidation effect.
2) adjacent main web face irregularity, the globality that girder is connected with steel diaphragm is poor.
3) crossbeam that general old bridge is set up is set up in the case of being open to traffic, and causes the deformation in advance of girder so that newly-increased crossbeam has certain hysteresis quality when bearing vehicular load.
4) for the bridge that the bigger river course of the depth of water or under-clearance are higher, it is the biggest that old bridge reinforcement sets up support cost.
Summary of the invention
It is an object of the invention to provide a kind of combination type prestressed steel diaphragm, hardened system and reinforcement means thereof, the technical problem that in existing pontic hardened system, consolidation effect is bad, globality is poor, cost is big will be solved.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of combination type prestressed steel diaphragm, including the first crossbeam being sequentially connected with in the horizontal direction, middle cross beam and second cross beam；The end of first crossbeam and the front end of second cross beam are socketed on the two ends of middle cross beam respectively；The end of described first crossbeam is also associated with prestressing force load maintainer, and prestressing force load maintainer is positioned at the inside of middle cross beam；Described second cross beam, middle cross beam and second cross beam are the rectangular cylinder that adapts of size or circular cylinder.
The front end of described first crossbeam and the end of second cross beam are connected to pivoting support；Described pivoting support includes internal layer steel cylinder and is socketed in the outer layer steel cylinder outside internal layer steel cylinder, both are flexibly connected and form bitubular socket articulated structure, combination type prestressed steel diaphragm can not be affected by both sides girder web plate irregularity when stress, complete self-level(l)ing, the problem solving girder and combination type prestressed steel diaphragm connection integrity difference, wherein the cross section of internal layer steel cylinder is circular, and the cross section of outer layer steel cylinder is that arc, its radian bundle are not more than 3/4 π radian not less than π radian.
Described pivoting support also includes that connecting tube, the one end of described connecting tube are fixedly connected on the side not being socketed outer layer steel cylinder on the steel cylinder of inner side.
Pivoting support uses mainly for the situation that girder web plate axis verticality is bad, the diaphragm two ends that girder web plate axis verticality is good can not be used articulated manner, cancel pivoting support, both sides beam-end and junction steel plate are welded and fixed, the most irregular for girder web plate, level, the special circumstances of perpendicularity all irregularities, described pivoting support is substituted double-deck steel cylinder by double-layer steel balls, formation spherical universal is hinged, now pivoting support includes internal layer steel ball and is socketed in the outer layer steel ball outside internal layer steel ball, wherein internal layer steel ball has part surface to expose and outside outer layer steel ball, for connecting connecting tube.
Described prestressing force load maintainer includes load maintainer support and the loading jack being connected on load maintainer support.
Described prestressing force load maintainer can load rank and structure space requirement etc. according to the prestressing force required by Design of Reinforcement and select to load specification and the type of jack, such as mechanical jack: such as rack-jack, scissor-like jack, screw jack etc., or select the chargers such as hydraulic jack；The jack that prestressing force load maintainer is selected must possess auto-lock function.
Described load maintainer support includes the load maintainer base plate that loading activity support is connected and the load maintainer top board being connected to loading activity bracket end with loading activity bracket slide；Wherein loading jack to be connected between load maintainer base plate and load maintainer top board, be arranged on load maintainer base plate by bolt bottom it, top is bolted with load maintainer top board；When loading jack stretches out or retracts, can make to occur between first crossbeam and middle cross beam relative displacement, the prestressing force loading jack loading is reached on the girder web plate that combination type prestressed steel diaphragm two ends connect.
The ∏ shape that cross section is lying of described loading activity support, the beam slab on its top is fixing with the terminal surface of first crossbeam to be connected, and two straight plates are connected with load maintainer top board through load maintainer base plate and end by connector.
Described load maintainer base plate is fixedly connected on the front portion of the medial wall of middle cross beam, and load maintainer base plate is the elongated hole that rectangular slab or circular slab, above symmetry have two straight plates through loading activity support.
The handle hole loading jack is had on wherein the middle cross beam.
A kind of hardened system applying described combination type prestressed steel diaphragm, including the combination type prestressed steel diaphragm being connected horizontally between the adjacent girder of pontic, at least together combination type prestressed steel diaphragm between adjacent girder, described combination type prestressed steel diaphragm is connected with girder by junction steel plate, the connecting tube at described combination type prestressed steel diaphragm two ends is fixing with corresponding junction steel plate respectively to be connected, and described junction steel plate is coated on girder web plate.
The cross section of described junction steel plate is U-shaped, is coated on the end of girder web plate from the bottom to top, is connected by split bolt between side plate and the web of girder of junction steel plate.
When old bridge reinforcement job site is without setting up support condition, hoisting bracket can be set up in the appropriate location of junction steel plate, thus reduce or cancel bridge lower carriage, facilitate site operation.
The reinforcement means of a kind of hardened system as mentioned, specifically comprises the following steps that
Step one, carries out pontic present situation calibrating.
Step 2, design team's box-like prestress steel diaphragm.
Step 3, installs junction steel plate on girder web plate.
Step 4, connects into entirety by first crossbeam, prestressing force load maintainer and middle cross beam.
Step 5, is respectively welded at pivoting support on the junction steel plate of correspondence.
Step 6, lifting second cross beam connection fixing with corresponding pivoting support.
Step 7, integral hoisting is also installed first crossbeam, prestressing force load maintainer and middle cross beam, is connected fixing to lifting first crossbeam and corresponding pivoting support, connect corresponding with second cross beam for middle cross beam.
Step 8, fills the gap between junction steel plate and girder web plate.
Step 9, repeats step 3 to step 8, completes the construction of hardened system between each girder of pontic.
Step 10, carries out prestressing force loading to combination type prestressed steel diaphragm.
In described step 10, combination type prestressed steel diaphragm carrying out prestressing force loading, wherein loading sequence is for by loading successively to both sides in the middle of pontic, after having loaded the first order successively, then loads the second level by centre, and the rest may be inferred, until having loaded.
After being loaded onto design requirement, carry out single compensation loading again every 10min, compensate the loss of prestress produced due to structure interval and structure Light deformation, repeatedly compensate and load 4～5 times, until the prestressing force that design requires no longer changes in 10min, till producing without loss of prestress.
Prestressing force load maintainer can complete biaxial loadings, apply necessarily to push up power when the space filled between junction steel plate and girder web plate, make packing material be in close contact with junction steel plate, it is ensured that the construction quality of filling, after material to be filled reaches design strength requirement, then it is reversed prestressing force loading.
Described loading jack is when operation, and the prestressing force applied, except application is in addition to the torque wrench of forcing press test calibration controls, also can add the modes such as force transducer and control, with convenient construction, meet different construction demands.
Compared with prior art the invention have the characteristics that and beneficial effect:
Instant invention overcomes the shortcoming that tradition pontic strengthening construction limiting factor is many, construction complexity is inconvenient, efficiency is low, effect is bad, solve raising hardened system overall performance, the technical problem of convenient construction.
The present invention combines the factors such as the operability of the construction features of Fabricated Simple Supported Beams bridge, construction site condition and hardened system, there is provided that a kind of applicable urban road medium and small bridges is applied, can quickly strengthen combination type prestressed diaphragm hardened system and the method for bridge lateral contact, have the advantage that
1, the both sides of combination type prestressed diaphragm use pivoting support can effectively solve the problem of adjacent main web side irregularity, reduce difficulty of construction, improve efficiency of construction.
2, combination type prestressed diaphragm uses junction steel plate and split bolt to be connected formation hardened system with girder, the stress concentration of girder web plate and combination type prestressed diaphragm junction can be shared, make old bridge more preferable with new clothes ruggedized construction globality, improve overall performance, it is ensured that strengthening quality.
3, combination type prestressed steel diaphragm reinforces the reinforcing of more common diaphragm more effectively, utilizes prestressing force load maintainer to make diaphragm become from original passive stress and actively coordinates full-bridge work, the integral working of raising bridge.
The composite can be widely applied in the old bridge reinforcement construction of Fabricated Simple Supported Beams slab bridge or in the strengthening construction of other similar contignations.
Accompanying drawing explanation
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the configuration state schematic diagram of the hardened system of the present invention.
Fig. 2 is the structural representation of the combination type prestressed steel diaphragm of the present invention.
Fig. 3 is the structure schematic top plan view of Fig. 2.
Fig. 4 is the structural representation of the pivoting support of the present invention.
Fig. 5 is the structural representation of the prestressing force load maintainer of the present invention.
Reference: 1-girder, 2-split bolt, 3-junction steel plate, 4-pivoting support, 5-first crossbeam, 6-middle cross beam, 7-prestressing force load maintainer, 8-second cross beam, 9-connecting tube, 10-internal layer steel cylinder, 11-outer layer steel cylinder, 12-load maintainer base plate, 13-load jack, 14-loading activity support, 15-load maintainer top board, 16-combination type prestressed steel diaphragm.
Detailed description of the invention
Embodiment sees shown in Fig. 2, Fig. 3, and this combination type prestressed steel diaphragm, including the pivoting support being sequentially connected with in the horizontal direction, first crossbeam 5, middle cross beam 6, second cross beam 8 and pivoting support；Wherein the front end of first crossbeam 5 and the end of second cross beam 8 are articulated and connected with pivoting support respectively；The end of first crossbeam 5 and the front end of second cross beam 8 are socketed on the two ends of middle cross beam 6 respectively；The end of described first crossbeam 5 is also associated with prestressing force load maintainer 7, and prestressing force load maintainer 7 is positioned at the inside of middle cross beam 6.
Shown in Figure 4, described pivoting support includes internal layer steel cylinder 10 and is socketed in the outer layer steel cylinder 11 outside internal layer steel cylinder 10, and both are flexibly connected；Wherein the cross section of internal layer steel cylinder 10 is circular, the cross section of outer layer steel cylinder 11 is that arc, its radian bundle are not more than 3/4 π radian not less than π radian, described pivoting support also includes that connecting tube 9, the one end of described connecting tube are fixedly connected on the side not being socketed outer layer steel cylinder 11 on the steel cylinder 10 of inner side.
Shown in Figure 5, described prestressing force load maintainer 7 includes load maintainer support and the loading jack 13 being connected on load maintainer support；Described load maintainer support includes the load maintainer base plate 12 that loading activity support 14 and loading activity support 14 are slidably connected and the load maintainer top board 15 being connected to loading activity support 14 end；Wherein load jack 13 to be connected between load maintainer base plate 12 and load maintainer top board 15.
The ∏ shape that cross section is lying of described loading activity support 14, the beam slab on its top is welded and fixed with the terminal surface of first crossbeam 5 and is connected, and two straight plates are connected with load maintainer top board 15 through load maintainer base plate 12 and end by bolt.
Described load maintainer base plate 12 is fixedly connected on the front portion of the medial wall of middle cross beam 6, and load maintainer base plate 12 is the elongated hole that rectangular slab or circular slab, above symmetry have two straight plates through loading activity support 14.
The handle hole loading jack is had on wherein the middle cross beam.
Shown in Figure 1, a kind of hardened system applying described combination type prestressed steel diaphragm, including the combination type prestressed steel diaphragm 16 being connected horizontally between the adjacent girder of pontic, at least together combination type prestressed steel diaphragm 16 between adjacent girder, described combination type prestressed steel diaphragm 16 is connected with girder 1 by junction steel plate 3, the connecting tube 9 at described combination type prestressed steel diaphragm 16 two ends is fixed with corresponding junction steel plate 3 respectively and is connected, and described junction steel plate 3 is connected on the web of girder.
Seeing shown in Fig. 2, Fig. 3, the cross section of described junction steel plate 3 is U-shaped, is coated on the end of girder 1 web from the bottom to top, is connected by split bolt 2 between the side plate of junction steel plate 3 and the web of girder 1.
A kind of reinforcement means of hardened system as mentioned, including old bridge present situation verification process, combination type prestressed steel diaphragm 16 design process, combination type prestressed steel diaphragm 16 installation process and combination type prestressed steel diaphragm 16 prestressing force loading procedure, specifically comprise the following steps that
Step one, carries out old bridge pontic present situation calibrating: S1, carries out visual examination by treating the old bridge of reinforcing, find Major Diseases；S2, being treated the old bridge construction duty of reinforcing by FEM calculation and bridge standard static and moving load experiment and examine and determine, the bearing capacity of old bridge is calculated and is evaluated in inspection.
Step 2, design team box-like prestress steel diaphragm 16:S1, design determine reinforces axle casing bearing capacity to be reached, and determines the difference of the bearing capacity of bridge before and after reinforcing according to the result of finite element and structural damage situation treating reinforcement bridge；S2, according to this difference, design prestress steel diaphragm quantity, cross section and the version that need to set up by structure design principle；Determined the size loading Prestressed T by Theoretical Calculation design, load rank according to design prestressing force and tabula fine strain of millet structure space requires that apolegamy loads jack, Aided design prestressing force load maintainer.
Step 3, the web concrete surface that should carry out girder 1 before installing junction steel plate 3:S1, junction steel plate 3 installation on girder web plate processes, and repairs defect；S2, the web appropriate location of girder 1 punch；S3, junction steel plate 3 is coated on girder web plate, coordinates corresponding boring with the through hole on girder 1 web；S4, junction steel plate 3 is locked and is fixed on girder 1 with running through the split bolt 2 of web of girder 1.
Step 4, connects into entirety: S1 by first crossbeam 5, prestressing force load maintainer 7 and middle cross beam 6, is welded with middle cross beam 6 by load maintainer base plate 12；S2, loading activity support 12 is welded with first crossbeam 5 end；S3, it is bolted bottom loading jack 13 on load maintainer base plate 12；S4, first crossbeam 5 is socketed in middle cross beam 6, and makes loading activity support 12 through elongated hole reserved on load maintainer base plate 12；After S5, each component locations adjust properly, loading jack 13 top and loading activity support 12 are bolted with load maintainer top board 15 respectively；S6, prestressing force load maintainer 7 i.e. installation, now first crossbeam 5 and middle cross beam 6 are connected as an entirety, carry out later stage integral hoisting and installation.
Step 5, is respectively welded at pivoting support on the junction steel plate 3 of correspondence: be welded on both sides junction steel plate 3 by connecting tube 9 by the pivoting support 4 at combination type prestressed steel diaphragm 16 two ends.
Step 6, lifting second cross beam 8 connection fixing with corresponding pivoting support: after second cross beam 8 lifting puts in place, its end is welded and fixed with the outer layer sleeve of corresponding pivoting support 4.
Step 7, integral hoisting also installs first crossbeam 5, prestressing force load maintainer 7 and middle cross beam 6, connect fixing to lifting first crossbeam 5 and corresponding pivoting support, connect corresponding with second cross beam 8 for middle cross beam 6: S1, operation load jack 13 to minimum stroke, make the part of first crossbeam 5 retraction middle cross beam 6 reach maximum；Being put in place with middle cross beam 6 integral hoisting by second cross beam 5, its front end is welded and fixed with the outer layer sleeve 11 of corresponding pivoting support 4；S2, operation loading jack 13, to suitable stroke, make middle cross beam 6 stretch out to the right, second cross beam 8 are inserted middle cross beam 6；S3, adjustment load jack 13 stroke to appropriate location, it is ensured that second cross beam 8 inserts the partial-length of middle cross beam 6 and is not less than the 1/10 of middle cross beam 6 length, and is welded and fixed with middle cross beam 6 by second cross beam 8.
Step 8, fill the gap between junction steel plate 3 and girder web plate, gap between the web of junction steel plate 3 and girder 1 is injected the packing material such as high strength structural adhesion or pea gravel concreten, increase lifting surface area, the web making girder 1 is more preferable with combination type prestressed steel diaphragm 16 connection integrity, operable loading jack 13 during being somebody's turn to do, and applies to combination type prestressed steel diaphragm 16 two ends necessarily to push up power, suggestion less than 0.1T, can make to connect between the two more firm.
Step 9, repeats step 3 to step 8, completes the construction of hardened system between each girder of pontic；
Step 10, after the packing material in gap reaches design strength requirement between the web combination type prestressed steel diaphragm 16 is carried out prestressing force loading: S1, having to wait for junction steel plate 3 and girder 1, just can carry out prestressing force loading；S2, application torque wrench load jack 13 according to the operation of torque pressure synopsis and carry out hierarchical loading, typically being divided into 4～5 to load grade design loading Prestressed T, wrenching torque and the conversion loading jack pressure need to be through Theoretical Calculation and by forcing press test calibration.
In described step 10, combination type prestressed steel diaphragm 16 carries out prestressing force loading, and wherein loading sequence is by loading successively to both sides in the middle of pontic, shown in Figure 1, first D, CE again, then BF, last AG, after having loaded the first order successively, loading the second level again by centre, the rest may be inferred, until having loaded.
After being loaded onto design requirement, carry out single compensation loading again every 10min, compensate the loss of prestress produced due to structure interval and structure Light deformation, repeatedly compensate and load 4～5 times, until the prestressing force that design requires no longer changes in 10min, till producing without loss of prestress.
After all having loaded, internal layer steel cylinder and the outer layer steel cylinder of pivoting support are welded and fixed, additionally, if the self-lock ability loading jack 13 can meet loading requirement for a long time, then without first crossbeam 5 and middle cross beam 6 are welded and fixed, and in order to prevent loading jack 13 to lose efficacy, first crossbeam 5 and middle cross beam 6 can be welded and fixed or by connectors such as safety pins, the two be removably connected.
Claims (10)
1. a combination type prestressed steel diaphragm, it is characterised in that: include being sequentially connected with first crossbeam (5), middle cross beam (6) and second cross beam (8) in the horizontal direction；
The end of first crossbeam (5) and the front end of second cross beam (8) are socketed on the two ends of middle cross beam (6) respectively；
The end of described first crossbeam (5) is also associated with prestressing force load maintainer (7), and prestressing force load maintainer (7) is positioned at the inside of middle cross beam (6).
Combination type prestressed steel diaphragm the most according to claim 1, it is characterised in that: the front end of described first crossbeam (5) and the end of second cross beam (8) are connected to pivoting support；
Described pivoting support includes internal layer steel cylinder (10) and is socketed in the outer layer steel cylinder (11) in internal layer steel cylinder (10) outside, and both are flexibly connected；
Wherein the cross section of internal layer steel cylinder (10) is circular, and the cross section of outer layer steel cylinder (11) is that arc, its radian bundle are not more than 3/4 π radian not less than π radian.
Combination type prestressed steel diaphragm the most according to claim 2, it is characterised in that: described pivoting support also includes that connecting tube (9), the one end of described connecting tube (9) are fixedly connected on the side not being socketed outer layer steel cylinder (11) on inner side steel cylinder (10).
Combination type prestressed steel diaphragm the most according to claim 3, it is characterised in that: described prestressing force load maintainer (7) includes load maintainer support and the loading jack (13) being connected on load maintainer support；
Described load maintainer support includes the load maintainer base plate (12) that loading activity support (14) and loading activity support (14) are slidably connected and the load maintainer top board (15) being connected to loading activity support (14) end；
Wherein load jack (13) to be connected between load maintainer base plate (12) and load maintainer top board (15).
Combination type prestressed steel diaphragm the most according to claim 4, it is characterized in that: the ∏ shape that cross section is lying of described loading activity support (14), the beam slab on its top is fixing with the terminal surface of first crossbeam (5) to be connected, and two straight plates are connected with load maintainer top board (15) through load maintainer base plate (12) and end by connector.
Combination type prestressed steel diaphragm the most according to claim 5, it is characterized in that: described load maintainer base plate (12) is fixedly connected on the front portion of the medial wall of middle cross beam (6), load maintainer base plate (12) is the elongated hole that rectangular slab or circular slab, above symmetry have two straight plates through loading activity support (14).
7. the hardened system of the combination type prestressed steel diaphragm applied described in claim 6, including the combination type prestressed steel diaphragm (16) being connected horizontally between the adjacent girder of pontic, it is characterized in that: at least together combination type prestressed steel diaphragm (16) between adjacent girder, described combination type prestressed steel diaphragm (16) is connected with girder (1) by junction steel plate (3), the connecting tube (9) at described combination type prestressed steel diaphragm (16) two ends is fixing with corresponding junction steel plate (3) respectively to be connected, described junction steel plate (3) is coated on girder web plate.
Hardened system the most according to claim 7, it is characterized in that: the cross section of described junction steel plate (3) is U-shaped, it is coated on the end of girder (1) web from the bottom to top, is connected by split bolt (2) between side plate and the web of girder (1) of junction steel plate (3).
9. the reinforcement means of a hardened system as claimed in claim 8, it is characterised in that specifically comprise the following steps that
Step one, carries out pontic present situation calibrating；
Step 2, design team's box-like prestress steel diaphragm (16)；
Step 3, installs junction steel plate (3) on girder web plate；
Step 4, connects into entirety by first crossbeam (5), prestressing force load maintainer (7) and middle cross beam (6)；
Step 5, is respectively welded at pivoting support on the junction steel plate (3) of correspondence；
Step 6, lifting second cross beam (8) connection fixing with corresponding pivoting support；
Step 7, integral hoisting is also installed first crossbeam (5), prestressing force load maintainer (7) and middle cross beam (6), is connected fixing to lifting first crossbeam 5 and corresponding pivoting support, connect corresponding with second cross beam (8) for middle cross beam (6)；
Step 8, fills the gap between junction steel plate (3) and girder web plate；
Step 9, repeats step 3 to step 8, completes the construction of hardened system between each girder of pontic；
Step 10, carries out prestressing force loading to combination type prestressed steel diaphragm (16).
Reinforcement means the most according to claim 9, it is characterized in that: in described step 10, combination type prestressed steel diaphragm (16) is carried out prestressing force loading, wherein loading sequence is for by loading successively to both sides in the middle of pontic, after having loaded the first order successively, loading the second level again by centre, the rest may be inferred, until having loaded；
After being loaded onto design requirement, carry out single compensation loading again every 10min, compensate the loss of prestress produced due to structure interval and structure Light deformation, repeatedly compensate and load 4～5 times, until the prestressing force that design requires no longer changes in 10min, till producing without loss of prestress.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109338911A (en) * | 2018-11-26 | 2019-02-15 | 平顶山市公路交通勘察设计院 | A kind of novel bridge tabula board connecting equipment and method |
| CN109853402A (en) * | 2019-03-29 | 2019-06-07 | 中铁十一局集团第五工程有限公司 | Large-tonnage big deviation jacking force direction self-regulation device and application for continuous rigid frame bridge closure pushing tow |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100516155B1 (en) * | 2003-09-04 | 2005-09-22 | 노윤근 | Section increasing and reinforcing apparatus for reinforcing section of the lower part of slab between girder and cross beam in girder bridge and installing method thereof |
| CN101570960A (en) * | 2009-05-08 | 2009-11-04 | 北京市市政专业设计院有限责任公司 | Fastening method of T-shaped beam bridge |
| CN204298749U (en) * | 2014-11-15 | 2015-04-29 | 北京市政路桥股份有限公司 | The new and old bridging of a kind of bridge widening connects uses steel truss diaphragm |
| CN204662235U (en) * | 2015-05-19 | 2015-09-23 | 安徽省交通规划设计研究总院股份有限公司 | A kind of steel plate combination T beam bridge |
| CN204715224U (en) * | 2015-05-31 | 2015-10-21 | 西安公路研究院 | A kind of case beam reinforcing construction based on i iron diaphragm |
-
2016
- 2016-07-11 CN CN201610541230.8A patent/CN105951613B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100516155B1 (en) * | 2003-09-04 | 2005-09-22 | 노윤근 | Section increasing and reinforcing apparatus for reinforcing section of the lower part of slab between girder and cross beam in girder bridge and installing method thereof |
| CN101570960A (en) * | 2009-05-08 | 2009-11-04 | 北京市市政专业设计院有限责任公司 | Fastening method of T-shaped beam bridge |
| CN204298749U (en) * | 2014-11-15 | 2015-04-29 | 北京市政路桥股份有限公司 | The new and old bridging of a kind of bridge widening connects uses steel truss diaphragm |
| CN204662235U (en) * | 2015-05-19 | 2015-09-23 | 安徽省交通规划设计研究总院股份有限公司 | A kind of steel plate combination T beam bridge |
| CN204715224U (en) * | 2015-05-31 | 2015-10-21 | 西安公路研究院 | A kind of case beam reinforcing construction based on i iron diaphragm |
Non-Patent Citations (1)
| Title |
|---|
| 姚嘉等: "一种新型组合式钢横隔梁的设计与应用", 《铁道建筑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109338911A (en) * | 2018-11-26 | 2019-02-15 | 平顶山市公路交通勘察设计院 | A kind of novel bridge tabula board connecting equipment and method |
| CN109338911B (en) * | 2018-11-26 | 2024-03-08 | 河南中平交科研究设计院有限公司 | Bridge diaphragm plate connecting device and method |
| CN109853402A (en) * | 2019-03-29 | 2019-06-07 | 中铁十一局集团第五工程有限公司 | Large-tonnage big deviation jacking force direction self-regulation device and application for continuous rigid frame bridge closure pushing tow |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105951613B (en) | 2017-07-04 |
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