CN105839516A - Transverse anti-drop-beam device for bridge and construction method thereof - Google Patents
Transverse anti-drop-beam device for bridge and construction method thereof Download PDFInfo
- Publication number
- CN105839516A CN105839516A CN201610398318.9A CN201610398318A CN105839516A CN 105839516 A CN105839516 A CN 105839516A CN 201610398318 A CN201610398318 A CN 201610398318A CN 105839516 A CN105839516 A CN 105839516A
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- Prior art keywords
- girder
- bridge
- jointed shaft
- reinforcing pull
- pull rod
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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
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The invention discloses a transverse anti-drop-beam device for a bridge and a construction method thereof. The transverse anti-drop-beam device for the bridge comprises two transverse anti-drop-beam mechanisms, wherein the transverse anti-drop-beam mechanisms are respectively arranged at bottoms of two adjacent main girder segments, both the two transverse anti-drop-beam mechanisms are arranged along a transverse bridge direction of the main girder, and are symmetrically arranged at a front side and a rear side of an upper part of a bridge pier, each transverse anti-drop-beam mechanism includes a bottom fixing plate, two upper part fixing plates and two steel rods, the bottom fixing plate is fixed on an external side wall of the bridge pier, the upper part fixing plates are symmetrically arranged above a left side and a right side of the bottom fixing plate, and the steel rods are respectively connected between the bottom fixing plate and the two upper part fixing plates. The construction method comprises the following steps: machining structural components in a factory; constructing the bridge pier and installing the bottom fixing plate; constructing the main girder segments and installing the upper part fixing plates; and installing the steel rods. The transverse anti-drop-beam device for the bridge disclosed by the invention has the advantages of reasonable design, simplicity in and convenience for construction, good use effect and capability of reducing an impact effect of an earthquake, preventing beam drop due to an overlarge transverse displacement of the bridge during the earthquake, and solving various problems of existing anti-drop-beam devices.
Description
Technical field
The invention belongs to technical field of bridge construction, especially relate to a kind of bridge lateral anti-fall girder apparatus
And construction method.
Background technology
In recent years, along with the fast development of Bridges in Our Country Yu architectural engineering, all kinds of new structure and
The architectural engineering of function continues to bring out therewith, and China proposes special mission to science of bridge building, specifically
Being after strong earthquakes, bridge is still to keep basic current requirement, and this is accomplished by arranging girder falling dress
Put.
The displacement earthquake of bridge superstructure is extremely common in earthquake, and lateral displacement is excessive is
One of its main earthquake form.Lateral displacement is crossed conference and is caused dislocation, support displacement mistake at joint of bridge
Destroy greatly the beam that even falls, cause bridge normally to use, for using the bridge of only columnar pier
Beam, this impact becomes apparent from.Therefore, when earthquake occurs, the lateral displacement of bridge is limited,
For ensureing that the normal use of bridge is just particularly important.
At present, the bridge anti-fall girder apparatus used the most all is dependent on being arranged on cushion cap and direction across bridge
The crashproof block laid matches with vertical bridge anti-fall girder apparatus upwards and reaches the purpose of restrainer, also
That is rely primarily on crashproof block restrainer on direction across bridge, and vertical bridge upwards uses between beam and beam
Or beam body is carried out spacing by anti-fall girder apparatus set between beam and pier, vertical bridge girder falling upwards
Device typically uses the mode welding rigidity steelframe on the pre-embedded steel slab being embedded in advance on beam and pier, above-mentioned
Vertical bridge anti-fall girder apparatus upwards exists that structure is complicated, cost is higher, construction is inconvenient, reliability is the highest,
Limit the defects such as beam body longitudinal extension deformation under normal circumstances.The crashproof block of above-mentioned dependence prevents cross-bridges
To the method for the beam that falls, there is following several respects defect and deficiency: the first, reliability is the highest: earthquake is strong
When spending higher ranked, crashproof block can not play effective girder falling；The second, fragile: earthquake is sent out
Time raw, the crashproof block that direction across bridge is laid often is damaged because of collision, thus can not really play anti-fall
Beam effect；3rd, constructing anti-collision block again is needed after damaging, time-consuming, and input cost is higher.
Summary of the invention
The technical problem to be solved is for above-mentioned deficiency of the prior art, it is provided that one
Kind of bridge lateral anti-fall girder apparatus, its simple in construction, cost be low and easy construction, using effect are good,
Can effectively alleviate the percussion of earthquake, when preventing earthquake from occurring bridge lateral displacement excessive fall
Beam, and can solve existing anti-fall girder apparatus exist fragile, reliability is the highest, input cost is higher
Etc. problem.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of bridge lateral girder falling
Device, it is characterised in that: include two be laid in respectively bottom adjacent two girder sections laterally anti-
Luo Liang mechanism, two described horizontal girder falling mechanisms all lay along the direction across bridge of girder, two institutes
State horizontal girder falling mechanism symmetry and be laid in both sides before and after bridge pier top；Described girder is saved by multiple girders
Section is spliced along vertical bridge to from front to back；
Bottom fixed board that each described horizontal girder falling mechanism all includes being fixed on bridge pier lateral wall,
Two symmetries be laid in the top tie plate above the bottom fixed board left and right sides and two connect respectively
Reinforcing pull rod between bottom fixed board and two described top tie plates, two described top tie plates
Symmetry is laid in the left and right sides, bottom of girder sections, and two described reinforcing pull rods are symmetrically laid and the two
It is respectively positioned on outside bottom fixed board；Described bottom fixed board is in vertically laying, and two described tops are fixed
Plate is all laid in level；All with hinge between each described reinforcing pull rod and bottom fixed board and top tie plate
The mode of connecing is attached, and described bottom fixed board is provided with two, left and right and draws for two described steel respectively
Bar lower end peace holds jointed shaft, and two described lower jointed shafts are symmetrically laid and both is solid with bottom
Determining plate is parallel laying, and two described lower jointed shafts are laid on same perpendicular, each described under
The perpendicular laying of reinforcing pull rod that jointed shaft is all connected with it；All pacify below two described top tie plates
Equipped with a upper jointed shaft installed for reinforcing pull rod upper end, described upper jointed shaft is that level is laid and its edge
The vertical bridge of described girder is to laying；The lower end of each described reinforcing pull rod be for lower jointed shaft
The lower connection end connected, described lower connection end has and holds installing hole for lower jointed shaft peace,
Described lower installing hole is circular hole；The upper end of each described reinforcing pull rod is for being connected with upper jointed shaft
Upper connection end, described upper connection end has for upper jointed shaft install upper installing hole, described on
Installing hole is elongate holes；Described upper connection end and the described perpendicular laying of lower connection end, described
Elongate holes is that level is laid and it is laid along the direction across bridge of described girder.
Above-mentioned a kind of bridge lateral anti-fall girder apparatus, is characterized in that: two described horizontal girder falling mechanisms
All in vertically to laying；Two described top tie plates in each described horizontal girder falling mechanism are uniform
It is located on same vertical plane, and two described reinforcing pull rods in each described horizontal girder falling mechanism are uniform
It is located on same vertical plane.
Above-mentioned a kind of bridge lateral anti-fall girder apparatus, is characterized in that: described reinforcing pull rod for from top to bottom by
The most intilted straight-bar that is tilted towards, the angle between described reinforcing pull rod and horizontal plane be 30 °～
60°。
Above-mentioned a kind of bridge lateral anti-fall girder apparatus, is characterized in that: the cross section of described bridge pier is rectangle；
The bottom fixed board of two described horizontal girder falling mechanisms is close to respectively and is fixed on side before and after bridge pier
On wall, it is anti-fall that two described horizontal girder falling mechanisms are respectively positioned at the front side of both sides before and after bridge pier top
Beam mechanism and rear side girder falling mechanism, the reinforcing pull rod of described front side girder falling mechanism and the front side wall of bridge pier
Between spacing and reinforcing pull rod and the rear wall of bridge pier of described rear side girder falling mechanism between
The seam width at set expansion joint on the most described girder.
Above-mentioned a kind of bridge lateral anti-fall girder apparatus, is characterized in that: described girder sections is in horizontal cloth
If reinforced beam, described bridge pier is in vertically to the reinforced concrete bridge pier laid；
Described top tie plate is fixed on bottom girder sections by multiple upper crab-bolts, described upper crab-bolt in
Vertically to laying；Described bottom fixed board is fixed on bridge pier by multiple lower crab-bolts, described lower crab-bolt
Lay in level and it is with the perpendicular laying of bottom fixed board.
Above-mentioned a kind of bridge lateral anti-fall girder apparatus, is characterized in that: described upper crab-bolt anchors into girder sections
The degree of depth be 10cm～20cm, it is 10cm～20cm that described lower crab-bolt anchors into the degree of depth of bridge pier.
Above-mentioned a kind of bridge lateral anti-fall girder apparatus, is characterized in that: be provided with on described bottom fixed board
Two, left and right holds hinged seat for two described lower jointed shafts peace respectively, two described lower hinged seats in
Symmetrical laying；Each described lower hinged seat all include two in otic placode hinged under parallel laying, two
Under described, hinged otic placode is and is installed down the flat plate that jointed shaft is parallel laying, described in two
Under hinged otic placode be all weldingly fixed on bottom fixed board and both and the perpendicular cloth of bottom fixed board
If；Two described under all have the circular hole that a lower jointed shaft of confession is installed, described lower hinge on hinged otic placode
The two ends of spindle are coaxially installed with a lower position nut, two described lower position nut positions respectively respectively
In two described under outside hinged otic placode；
Be provided with the upper hinged seat that jointed shaft in a confession is installed bottom described top tie plate, described on
Hinged seat includes two upper hinged otic placodes in parallel laying, and two described hinged otic placodes are all along described
The direction across bridge of girder carries out laying and both at the flat plate being weldingly fixed on top tie plate,
Two described hinged otic placodes all in vertically to laying；One is all had on two described hinged otic placodes
The circular hole that in confession, jointed shaft is installed, the two ends of described upper jointed shaft are coaxially installed with a upper limit respectively
Nut, two described upper limit nuts lay respectively at outside two described hinged otic placodes.
Above-mentioned a kind of bridge lateral anti-fall girder apparatus, is characterized in that: described bottom fixed board and top are solid
Determine plate and be rectangular steel plates.
Meanwhile, the invention also discloses that a kind of method step is simple, reasonable in design and easy construction, make
By effective bridge lateral anti-fall girder apparatus construction method, it is characterised in that the method includes following
Step:
Step one, element factory are processed: in the processing factory bottom to two described horizontal girder falling mechanisms
Fixed plate, two described top tie plates, two described reinforcing pull rods, upper jointed shaft and lower jointed shaft divide
It is not processed, and on the bottom fixed board of machine-shaping, fixes two described lower hinged seats, simultaneously
Two described top tie plates of machine-shaping are fixed respectively one described on hinged seat；
Step 2, Bridge Pier Construction and bottom fixed board are installed: construct bridge pier, and to bridge pier
In work progress, machine-shaping and band during before and after the top of bridge pier, both sides are respectively mounted a step one
There is the bottom fixed board of two described lower hinged seats；
Before any one described, bottom fixed board is installed, first pacify on installed bottom fixed board
Fill multiple described lower crab-bolt, and multiple described lower crab-bolts are all anchored in bridge pier；
Step 3, girder segmental construction and top tie plate are installed: to adjacent two described girder sections
Construct respectively, and make two described girder sections all be supported in described in step 2 on bridge pier, and
Machine-shaping and with described in two steps one in left and right it is respectively mounted bottom each described girder sections
The top tie plate of upper hinged seat；
Step 4, reinforcing pull rod are installed: four described reinforcing pull rods to two described horizontal girder falling mechanisms
Install respectively；After four described reinforcing pull rods have been respectively mounted, complete two described the most anti-fall
The work progress of beam mechanism；
To when any one described, reinforcing pull rod is installed, first installed reinforcing pull rod described on connection end
Be respectively mounted jointed shaft and lower jointed shaft on head and described lower connection end, then by upper jointed shaft and under
Jointed shaft is separately mounted on described in step 3 descend on hinged seat described in hinged seat and step 2.
Said method, is characterized in that: girder sections described in step 3 is for prefabricated profiled at precasting yard
Armored concrete precast beam；
When adjacent two described girder sections are constructed by step 3 respectively, only lifting need to be used to set
For two described girder segment liftings are put in place；
Two described girder sections are carried out in prefabrication process, respectively bottom each described girder sections
Machine-shaping and the top tie plate with described upper hinged seat in two steps one are installed；Solid to top
Determine before plate installs, first install on installed top tie plate multiple described on crab-bolt, and general
Multiple described upper crab-bolts all anchor in girder sections.
The present invention compared with prior art has the advantage that
1, the bridge lateral anti-fall girder apparatus simple in construction that used, reasonable in design and input cost are relatively
Low, save material.
2, the bridge lateral anti-fall girder apparatus used is reasonable in design, mainly includes that two are laid respectively
Horizontal girder falling mechanism bottom adjacent two girder sections, two horizontal girder falling mechanisms are all along main
The direction across bridge of beam carries out laying and the two symmetry is laid in both sides before and after bridge pier top；Laterally girder falling machine
Structure all includes that the bottom fixed board being fixed on bridge pier lateral wall, two symmetries are laid in bottom fixed board
Top tie plate above the left and right sides and two are connected to bottom fixed board and two tops are solid
Determine the reinforcing pull rod between plate.Actual processing simplicity, input cost is relatively low, and dismounting simplicity.
3, it is attached the most in hinged way between reinforcing pull rod and bottom fixed board and top tie plate,
Having on the lower connection end of reinforcing pull rod and hold installing hole for lower jointed shaft peace, lower installing hole is circle
Hole；Having the upper installing hole installed for upper jointed shaft on the upper connection end of reinforcing pull rod, upper installing hole is
Elongate holes.Time actually used, reinforcing pull rod can rotate freely on upper jointed shaft and lower jointed shaft, and
And vertically moving on certain length can be carried out at upper jointed shaft, thus the longitudinal direction not affecting girder becomes
Shape.Further, by the position-limiting action of upper limit nut, the length travel of girder sections can be limited
System, thus have at vertical bridge to the effect of restrainer simultaneously.
4, the bridge lateral anti-fall girder apparatus used is hardly damaged, and the most only possible
The problems such as reinforcing pull rod deformation occur, only reinforcing pull rod need to be replaced, saving of work and time, and put into
Relatively costly, later period maintenance is easy.
5, construction method step is simple, reasonable in design and easy construction, construction quality are easily controllable,
Only need to fix bottom fixed board at bridge pier sidepiece, and bottom girder sections, fix top tie plate, then
To carry out hinged by reinforcing pull rod between bottom fixed board and top tie plate.
6, using effect is good and practical value high, it is possible to the effectively buffering earthquake impulsive force to beam body,
And be prevented from bridge beam body when earthquake and drop, the lateral stiffness of beam body can be effectively increased simultaneously.Real
During border uses, transversely deforming bridge normal service condition under and displacement can be effectively ensured, simultaneously
Can ensure that again under earthquake load or other relatively larger transverse load action, it is possible to effective by seismic force
Being delivered to bridge pier column, excessive lateral displacement the most laterally falls beam to make girder to occur.Its structure
Simply, low cost, it is simple to make and install, is effective and safe safeguard during bridge earthquake.Separately
Outward, use present invention bridge lateral displacement when solving to occur earthquake excessive and the same of beam problem that fall
Time, can ensure that the lateral displacement of bridge pad within the range of permission, it is to avoid bridge pad simultaneously
Destroy because displacement is excessive, it is possible to effectively limit the lateral displacement of bridge main beam, and can effectively prevent bridge
Beam laterally falls beam (i.e. direction across bridge fall beam).Further, have to a certain extent and prevent from longitudinally falling beam (i.e.
Vertical bridge is to the beam that falls) effect, perfect in shape and function, economical use.Meanwhile, without limitation on girder sections just
Normal linear deformation and transversely deforming.
In sum, the present invention is reasonable in design and easy construction, using effect are good, effectively can alleviate ground
Shake percussion, when preventing earthquake from occurring bridge lateral displacement excessive fall beam, and can solve show
Fragile, the problem such as reliability is the highest, input cost is higher with the presence of anti-fall girder apparatus.
Below by drawings and Examples, technical scheme is described in further detail.
Accompanying drawing explanation
Fig. 1 is that the direction across bridge of bridge lateral anti-fall girder apparatus of the present invention uses state reference map.
Fig. 2 is that the vertical bridge of bridge lateral anti-fall girder apparatus of the present invention is to using state reference map.
Fig. 3 is the structural representation of the present invention horizontal girder falling mechanism.
Fig. 4 is the side portion structure schematic diagram of the present invention horizontal girder falling mechanism.
Fig. 5 is the structural representation of reinforcing pull rod of the present invention.
Fig. 6 is connection end on reinforcing pull rod of the present invention, lower connection end and the structural representation of lower installing hole
Figure.
Fig. 7 is the construction method FB(flow block) of the present invention.
Description of reference numerals:
1 top tie plate；2 bottom fixed boards；3 reinforcing pull rods；
Installing hole on 4；5 times installing holes；6 times crab-bolts；
Crab-bolt on 7；8 girder sections；9 bridge piers；
10 bearings；11 horizontal girder falling mechanisms；12 times jointed shafts；
Jointed shaft on 13；14 expansion joints；15 times hinged otic placodes；
Hinged otic placode on 16；17 lower position nuts；18 upper limit nuts；
The 19 pull bar bodies of rod.
Detailed description of the invention
As shown in Figure 1, Figure 2, a kind of bridge lateral anti-fall girder apparatus shown in Fig. 3 and Fig. 4, including two
Be laid in the horizontal girder falling mechanism 11 bottom adjacent two girder sections 8 respectively, two described laterally
Girder falling mechanism 11 all lays along the direction across bridge of girder, two described horizontal girder falling mechanisms 11
Symmetry is laid in both sides before and after bridge pier 9 top；Described girder by multiple girder sections 8 along vertical bridge to by
A-P is spliced.
Each described horizontal girder falling mechanism 11 all includes that the bottom being fixed on bridge pier 9 lateral wall is solid
Determine 2, two symmetries of plate and be laid in the top tie plate 1 and two above bottom fixed board 2 left and right sides
The individual reinforcing pull rod 3 being connected between bottom fixed board 2 and two described top tie plates 1, two
Individual described top tie plate 1 symmetry is laid in the left and right sides, bottom of girder sections 8, two described steel
Pull bar 3 symmetrically lays and both is positioned at outside bottom fixed board 2；Described bottom fixed board 2 in
Vertically laying, two described top tie plates 1 are all laid in level；Each described reinforcing pull rod 3 and the end
It is attached the most in hinged way between portion's fixed plate 2 and top tie plate 1, described bottom fixed board
Two, left and right is installed on 2 and holds jointed shaft 12 for two described reinforcing pull rod 3 lower ends peace respectively, two
Individual described lower jointed shaft 12 symmetrically lay and both with bottom fixed board 2 in parallel laying, two
Individual described lower jointed shaft 12 is laid on same perpendicular, each described lower jointed shaft 12 all and its
The perpendicular laying of reinforcing pull rod 3 connected；It is mounted on one below two described top tie plates 1
The upper jointed shaft 13 installed for reinforcing pull rod 3 upper end, described upper jointed shaft 13 is laid and its edge in level
The vertical bridge of described girder is to laying；In conjunction with Fig. 5 and Fig. 6, the lower end of each described reinforcing pull rod 3
It is the lower connection end for being connected with lower jointed shaft 12, described lower connection end has under supplying
Jointed shaft 12 peace holds installing hole 5, and described lower installing hole 5 is circular hole；Each described reinforcing pull rod 3
Upper end be the upper connection end for being connected with upper jointed shaft 13, described upper connection end is opened
Having the upper installing hole 4 installed for upper jointed shaft 13, described upper installing hole 4 is elongate holes；On described
Connection end and the described perpendicular laying of lower connection end, described elongate holes is that level is laid and its edge
The direction across bridge of described girder is laid.
In the present embodiment, described reinforcing pull rod 3 is by the pull bar body of rod 19 and is connected to the pull bar body of rod
The described upper connection end of 19 upper and lower sides and lower connection end composition, the described pull bar body of rod 19 is cylinder
Shape bar, described upper connection end and lower connection end are after flattening described cylindrical bar two ends
The connection end formed.
In the present embodiment, two described horizontal girder falling mechanisms 11 all in vertically to laying；Each institute
State two in horizontal girder falling mechanism 11 described top tie plates 1 to be all laid on same vertical plane,
And two described reinforcing pull rods 3 in each described horizontal girder falling mechanism 11 be all laid in same vertically
On face.
During practice of construction, described reinforcing pull rod 3 is the most intilted straight-bar that is tilted towards,
Angle between described reinforcing pull rod 3 and horizontal plane is 30 °～60 °.
In the present embodiment, the angle between described reinforcing pull rod 3 and horizontal plane is 45 °.During practice of construction,
Angle between reinforcing pull rod 3 and horizontal plane can be 30 ° and adjusts accordingly according to specific needs.
In the present embodiment, the cross section of described bridge pier 9 is rectangle；Two described horizontal girder falling mechanisms
The bottom fixed board 2 of 11 is close to respectively and is fixed on before and after bridge pier 9 on sidewall, two described laterally
Girder falling mechanism 11 is respectively positioned at front side girder falling mechanism and the rear side of both sides before and after bridge pier 9 top
Girder falling mechanism, between reinforcing pull rod 3 and the front side wall of bridge pier 9 of described front side girder falling mechanism between
Away from and reinforcing pull rod 3 and the rear wall of bridge pier 9 of described rear side girder falling mechanism between spacing the least
The seam width at set expansion joint 14 on described girder.
Wherein, the spacing stitched between a width of adjacent two girder sections 8 at described expansion joint 14.Institute
Stating the spacing between reinforcing pull rod 3 and the front side wall of bridge pier 9 of front side girder falling mechanism is that described front side is prevented
Spacing between central axis and the front side wall of bridge pier 9 of the reinforcing pull rod 3 of Luo Liang mechanism, described rear side
Spacing between reinforcing pull rod 3 and the rear wall of bridge pier 9 of girder falling mechanism is described rear side girder falling machine
Spacing between central axis and the rear wall of bridge pier 9 of the reinforcing pull rod 3 of structure.
In the present embodiment, it is provided with former and later two bottom described bridge pier 9 respectively to adjacent two girders joint
The bearing 10 that section 8 is supported.
Further, described bearing 10 is permanent bearing.
In the present embodiment, described girder sections 8 is the reinforced beam laid in level, described bridge
Pier 9 is in vertically to the reinforced concrete bridge pier laid；
Described top tie plate 1 is fixed on bottom girder sections 8 by multiple upper crab-bolts 7, described on
Crab-bolt 7 is in vertically to laying；Described bottom fixed board 2 is fixed on bridge pier 9 by multiple lower crab-bolts 6
On, described lower crab-bolt 6 is laid in level and it is with the perpendicular laying of bottom fixed board 2.
In the present embodiment, described bottom fixed board 2 and top tie plate 1 are rectangular steel plates.
Actual adding man-hour, described bottom fixed board 2 and top tie plate 1 can also use other shape
Steel plate.
In the present embodiment, the degree of depth that described upper crab-bolt 7 anchors into girder sections 8 is 10cm～20cm, institute
Stating lower crab-bolt 6 and anchoring into the degree of depth of bridge pier 9 is 10cm～20cm.
Further, during practice of construction, according to specific needs upper crab-bolt 7 can be anchored into girder sections
The degree of depth that the degree of depth of 8 and lower crab-bolt 6 anchor into bridge pier 9 adjusts accordingly.
In the present embodiment, described bottom fixed board 2 is provided with left and right two respectively for two described under
Jointed shaft 12 peace holds hinged seat, and two described lower hinged seats are symmetrically laid；Each described under
Hinged seat all include two in otic placode 15 hinged under parallel laying, two described under hinged otic placode 15
Be and the jointed shaft 12 flat plate in parallel laying be installed down, two described under hinged otic placode
15 are all weldingly fixed on bottom fixed board 2 and both and the perpendicular laying of bottom fixed board 2；Two
Individual described under all have the circular hole that a confession lower jointed shaft 12 is installed, described lower hinge on hinged otic placode 15
The two ends of spindle 12 are coaxially installed with a lower position nut 17, two described lower position nuts respectively
17 lay respectively at two described under outside hinged otic placode 15；
The upper hinged seat that in a confession, jointed shaft 13 is installed it is provided with bottom described top tie plate 1,
Described upper hinged seat includes two upper hinged otic placodes 16 in parallel laying, two described hinged otic placodes
16 all carry out laying and both at being weldingly fixed on top tie plate 1 along the direction across bridge of described girder
On flat plate, two described hinged otic placodes 16 all in vertically to laying；Two described upper hinges
The circular hole that in a confession, jointed shaft 13 is installed all is had on ear connecting plate 16, described upper jointed shaft 13
Two ends are coaxially installed with a upper limit nut 18, two described upper limit nut 18 positions respectively respectively
Outside two described hinged otic placodes 16.
One as shown in Figure 7 carries out construction method to bridge lateral anti-fall girder apparatus, including following step
Rapid:
Step one, element factory are processed: in processing factory to two described horizontal girder falling mechanisms 11
Bottom fixed board 2, two described top tie plate 1, two described reinforcing pull rods 3, upper jointed shafts 13
It is processed respectively with lower jointed shaft 12, and on the bottom fixed board 2 of machine-shaping, fixes two
Described lower hinged seat, fixes one on two described top tie plates 1 of machine-shaping simultaneously respectively
Described upper hinged seat；
Step 2, Bridge Pier Construction and bottom fixed board are installed: construct bridge pier 9, and to bridge
In pier 9 work progress, before and after the top of bridge pier 9, both sides are processed in being respectively mounted a step one
Type and the bottom fixed board 2 with two described lower hinged seats；
Before bottom fixed board any one described 2 is installed, first at installed bottom fixed board 2
The multiple described lower crab-bolt 6 of upper installation, and multiple described lower crab-bolts 6 are all anchored in bridge pier 9；
Step 3, girder segmental construction and top tie plate are installed: to adjacent two described girder sections
8 construct respectively, and make two described girder sections 8 all be supported in bridge pier 9 described in step 2
On, and bottom each described girder sections 8, it is respectively mounted machine-shaping and band in two steps one in left and right
There is the top tie plate 1 of described upper hinged seat；
Step 4, reinforcing pull rod are installed: four described steel to two described horizontal girder falling mechanisms 11
Pull bar 3 is installed respectively；After four described reinforcing pull rods 3 have been respectively mounted, complete described in two
The laterally work progress of girder falling mechanism 11；
When reinforcing pull rod any one described 3 is installed, first installed reinforcing pull rod 3 described on connect
Connect and on termination and described lower connection end, be respectively mounted jointed shaft 13 and lower jointed shaft 12, then by upper
Jointed shaft 13 and lower jointed shaft 12 are separately mounted to institute in upper hinged seat described in step 3 and step 2
State on lower hinged seat.
In the present embodiment, girder sections described in step 38 is to mix at the prefabricated profiled reinforcing bar of precasting yard
Solidifying soil precast beam；
When adjacent two described girder sections 8 are constructed by step 3 respectively, only need to use lifting
Two described girder sections 8 liftings are put in place by equipment；
Two described girder sections 8 are carried out in prefabrication process, respectively at each described girder sections 8
Machine-shaping and the top tie plate 1 with described upper hinged seat in two steps one is installed in bottom；Right
Before top tie plate 1 is installed, first install on installed top tie plate 1 multiple described on
Crab-bolt 7, and multiple described upper crab-bolts 7 are all anchored in girder sections 8.
The above, be only presently preferred embodiments of the present invention, not impose any restrictions the present invention, every
Any simple modification, change and equivalent structure above example made according to the technology of the present invention essence
Change, all still falls within the protection domain of technical solution of the present invention.
Claims (10)
1. a bridge lateral anti-fall girder apparatus, it is characterised in that: include that two are laid in adjacent respectively
The horizontal girder falling mechanism (11) of two girder sections (8) bottoms, two described horizontal girder fallings
Mechanism (11) all lays along the direction across bridge of girder, two described horizontal girder falling mechanisms (11)
Symmetry is laid in both sides before and after bridge pier (9) top；Described girder is vertical by multiple girder sections (8) edge
Bridge is spliced to from front to back；
Each described horizontal girder falling mechanism (11) all includes being fixed on bridge pier (9) lateral wall
Bottom fixed board (2), two symmetries are laid in the top above bottom fixed board (2) left and right sides
Fixed plate (1) and two are connected to bottom fixed board (2) and two described top tie plates (1)
Between reinforcing pull rod (3), two described top tie plate (1) symmetries are laid in girder sections (8)
The left and right sides, bottom, two described reinforcing pull rods (3) are symmetrically laid and both to be positioned at bottom solid
Determine plate (2) outside；Described bottom fixed board (2) is in vertically laying, two described top tie plates
(1) all lay in level；Each described reinforcing pull rod (3) is solid with bottom fixed board (2) and top
Determining to be attached the most in hinged way between plate (1), described bottom fixed board is provided with a left side on (2)
Right two hold jointed shaft (12), two institutes for two described reinforcing pull rod (3) lower end peaces respectively
State lower jointed shaft (12) symmetrically lay and both with bottom fixed board (2) in parallel laying,
Two described lower jointed shafts (12) are laid on same perpendicular, each described lower jointed shaft (12)
Reinforcing pull rod (3) the perpendicular laying being all connected with it；Two described top tie plate (1) lower sections
It is mounted on a upper jointed shaft (13) installed for reinforcing pull rod (3) upper end, described upper jointed shaft
(13) lay in level and its along the vertical bridge of described girder to laying；Each described reinforcing pull rod (3)
Lower end be the lower connection end for being connected with lower jointed shaft (12), on described lower connection end
Having and hold installing hole (5) for lower jointed shaft (12) peace, described lower installing hole (5) is circular hole；
The upper end of each described reinforcing pull rod (3) is the upper connection end for being connected with upper jointed shaft (13)
Head, described upper connection end has the upper installing hole (4) installed for upper jointed shaft (13), institute
Stating installing hole (4) is elongate holes；Described upper connection end is perpendicular with described lower connection end
Laying, described elongate holes is that level is laid and it is laid along the direction across bridge of described girder.
2. according to a kind of bridge lateral anti-fall girder apparatus described in claim 1, it is characterised in that: two
Individual described horizontal girder falling mechanism (11) is all in vertically to laying；Each described horizontal girder falling mechanism
(11) two described top tie plates (1) in are all laid on same vertical plane, and each institute
Two the described reinforcing pull rods (3) stated in horizontal girder falling mechanism (11) are all laid in same vertical plane
On.
3. according to a kind of bridge lateral anti-fall girder apparatus described in claim 1 or 2, it is characterised in that:
Described reinforcing pull rod (3) is the most intilted straight-bar that is tilted towards, described reinforcing pull rod (3)
And the angle between horizontal plane is 30 °～60 °.
4. according to a kind of bridge lateral anti-fall girder apparatus described in claim 1 or 2, it is characterised in that:
The cross section of described bridge pier (9) is rectangle；The bottom of two described horizontal girder falling mechanisms (11)
Fixed plate (2) is close to respectively and is fixed on before and after bridge pier (9) on sidewall, and two described the most anti-
Luo Liang mechanism (11) be respectively positioned at both sides before and after bridge pier (9) top front side girder falling mechanism and
Rear side girder falling mechanism, the reinforcing pull rod (3) of described front side girder falling mechanism and the front side of bridge pier (9)
The reinforcing pull rod (3) of spacing between wall and described rear side girder falling mechanism and the rear side of bridge pier (9)
Spacing between wall is respectively less than on described girder the seam width at set expansion joint (14).
5. according to a kind of bridge lateral anti-fall girder apparatus described in claim 1 or 2, it is characterised in that:
Described girder sections (8) is the reinforced beam laid in level, and described bridge pier (9) is in perpendicular
Directly to the reinforced concrete bridge pier laid；
Described top tie plate (1) is fixed on girder sections (8) end by multiple upper crab-bolts (7)
Portion, described upper crab-bolt (7) is in vertically to laying；Described bottom fixed board (2) is casted anchor by multiple
Bolt (6) is fixed on bridge pier (9), and described lower crab-bolt (6) is laid in level and it is solid with bottom
Determine plate (2) perpendicular laying.
6. according to a kind of bridge lateral anti-fall girder apparatus described in claim 5, it is characterised in that: institute
Stating crab-bolt (7) and anchoring into the degree of depth of girder sections (8) is 10cm～20cm, described lower crab-bolt (6)
The degree of depth anchoring into bridge pier (9) is 10cm～20cm.
7. according to a kind of bridge lateral anti-fall girder apparatus described in claim 1 or 2, it is characterised in that:
Two, left and right it is provided with respectively for two described lower jointed shafts (12) on described bottom fixed board (2)
Peace holds hinged seat, and two described lower hinged seats are symmetrically laid；Each described lower hinged seat all wraps
Include two in otic placode (15) hinged under parallel laying, two described under hinged otic placode (15) be
With the jointed shaft (12) flat plate in parallel laying is installed down, two described under hinged otic placode (15)
All it is weldingly fixed on that bottom fixed board (2) is upper and both and bottom fixed board (2) perpendicular laying；
Two described under all have the circular hole that the lower jointed shaft of a confession (12) is installed on hinged otic placode (15),
The two ends of described lower jointed shaft (12) are coaxially installed with a lower position nut (17) respectively, two
Described lower position nut (17) lay respectively at two described under hinged otic placode (15) outside；
Described top tie plate (1) bottom is provided with the upper hinge that in a confession, jointed shaft (13) is installed
Joint chair, described upper hinged seat includes two upper hinged otic placodes (16) in parallel laying, described in two
Upper hinged otic placode (16) all carries out laying and both at being weldingly fixed on along the direction across bridge of described girder
Flat plate on top tie plate (1), two described hinged otic placodes (16) all in vertically to
Lay；All have what jointed shaft (13) in a confession was installed on two described hinged otic placodes (16)
Circular hole, the two ends of described upper jointed shaft (13) are coaxially installed with a upper limit nut (18) respectively,
Two described upper limit nuts (18) lay respectively at two described hinged otic placode (16) outsides.
8. according to a kind of bridge lateral anti-fall girder apparatus described in claim 1 or 2, it is characterised in that:
Described bottom fixed board (2) and top tie plate (1) are rectangular steel plates.
9. bridge lateral anti-fall girder apparatus as claimed in claim 7 being carried out a construction method, it is special
Levying and be, the method comprises the following steps:
Step one, element factory are processed: in processing factory to two described horizontal girder falling mechanisms (11)
Bottom fixed board (2), two described top tie plates (1), two described reinforcing pull rods (3),
Upper jointed shaft (13) and lower jointed shaft (12) are processed respectively, and solid in the bottom of machine-shaping
Determine on plate (2), to fix two described lower hinged seats, simultaneously solid on two described tops of machine-shaping
Determine on plate (1), to fix a described upper hinged seat respectively；
Step 2, Bridge Pier Construction and bottom fixed board are installed: construct bridge pier (9), and
To in bridge pier (9) work progress, before and after the top of bridge pier (9), both sides are respectively mounted a step
Machine-shaping and the bottom fixed board (2) with two described lower hinged seats in one；
Before bottom fixed board any one described (2) is installed, first fixing bottom being installed
Plate (2) is upper installs multiple described lower crab-bolts (6), and multiple described lower crab-bolts (6) is all anchored into
In bridge pier (9)；
Step 3, girder segmental construction and top tie plate are installed: to adjacent two described girder sections
(8) construct respectively, and make two described girder sections (8) all be supported in described in step 2
On bridge pier (9), and in each described girder sections (8) bottom is respectively mounted two steps one in left and right
Machine-shaping and the top tie plate (1) with described upper hinged seat；
Step 4, reinforcing pull rod are installed: to described in four of two described horizontal girder falling mechanisms (11)
Reinforcing pull rod (3) is installed respectively；After four described reinforcing pull rods (3) have been respectively mounted, complete
The work progress of two described horizontal girder falling mechanisms (11)；
When reinforcing pull rod any one described (3) is installed, first in the institute of installed reinforcing pull rod (3)
State and on connection end and described lower connection end, be respectively mounted jointed shaft (13) and lower jointed shaft
(12), then by upper jointed shaft (13) and lower jointed shaft (12) it is separately mounted to described in step 3
Described in upper hinged seat and step 2 on lower hinged seat.
The most in accordance with the method for claim 9, it is characterised in that: girder described in step 3 saves
Section (8) is at precasting yard prefabricated profiled armored concrete precast beam；
When adjacent two described girder sections (8) are constructed by step 3 respectively, only need to use
Two described girder sections (8) liftings are put in place by hanging device；
Two described girder sections (8) are carried out in prefabrication process, saves at each described girder respectively
Section (8) bottom is installed machine-shaping and the top with described upper hinged seat in two steps one and is fixed
Plate (1)；Before top tie plate (1) is installed, first in installed top tie plate (1)
The multiple described upper crab-bolt (7) of upper installation, and multiple described upper crab-bolts (7) are all anchored into girder sections
(8) in.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610398318.9A CN105839516B (en) | 2016-06-07 | 2016-06-07 | A kind of bridge lateral anti-fall girder apparatus and its construction method |
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| CN201610398318.9A CN105839516B (en) | 2016-06-07 | 2016-06-07 | A kind of bridge lateral anti-fall girder apparatus and its construction method |
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| CN105839516B CN105839516B (en) | 2017-06-23 |
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Cited By (5)
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| CN106436557A (en) * | 2016-10-26 | 2017-02-22 | 上海市政工程设计研究总院（集团）有限公司 | Method for improving overturning resistance of single-column pier bridge |
| CN110820601A (en) * | 2019-10-24 | 2020-02-21 | 中铁四局集团有限公司 | Longitudinal constraint and displacement control method for large-span continuous steel truss girder cable-stayed bridge |
| CN111455881A (en) * | 2020-04-22 | 2020-07-28 | 重庆交通大学 | A antidumping reinforcing apparatus for single column mound bridge |
| CN112523070A (en) * | 2020-12-16 | 2021-03-19 | 重庆交通大学 | Public road bridge roof beam stop device that falls is prevented to bridge |
| CN113136789A (en) * | 2021-05-06 | 2021-07-20 | 中国地震局工程力学研究所 | Rotary box girder anti-falling device |
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| JPH11131426A (en) * | 1997-10-30 | 1999-05-18 | Takenaka Seisakusho:Kk | Bridge falling preventing device |
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| CN106436557A (en) * | 2016-10-26 | 2017-02-22 | 上海市政工程设计研究总院（集团）有限公司 | Method for improving overturning resistance of single-column pier bridge |
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| CN110820601A (en) * | 2019-10-24 | 2020-02-21 | 中铁四局集团有限公司 | Longitudinal constraint and displacement control method for large-span continuous steel truss girder cable-stayed bridge |
| CN111455881A (en) * | 2020-04-22 | 2020-07-28 | 重庆交通大学 | A antidumping reinforcing apparatus for single column mound bridge |
| CN112523070A (en) * | 2020-12-16 | 2021-03-19 | 重庆交通大学 | Public road bridge roof beam stop device that falls is prevented to bridge |
| CN113136789A (en) * | 2021-05-06 | 2021-07-20 | 中国地震局工程力学研究所 | Rotary box girder anti-falling device |
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| CN105839516B (en) | 2017-06-23 |
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