CN110318342A - A kind of precast segment bent cap free cantilever erection constructing device - Google Patents
A kind of precast segment bent cap free cantilever erection constructing device Download PDFInfo
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- CN110318342A CN110318342A CN201910627578.2A CN201910627578A CN110318342A CN 110318342 A CN110318342 A CN 110318342A CN 201910627578 A CN201910627578 A CN 201910627578A CN 110318342 A CN110318342 A CN 110318342A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 80
- 239000010959 steel Substances 0.000 claims abstract description 80
- 238000004873 anchoring Methods 0.000 claims abstract description 57
- 238000010276 construction Methods 0.000 claims abstract description 40
- 230000003014 reinforcing effect Effects 0.000 claims description 28
- 229920006335 epoxy glue Polymers 0.000 claims description 5
- 229910000754 Wrought iron Inorganic materials 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 239000000725 suspension Substances 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 5
- 240000002853 Nelumbo nucifera Species 0.000 description 4
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 4
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000007596 consolidation process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000010485 coping Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002362 mulch Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of precast segment bent cap free cantilever erection constructing devices, including principal piece and cantilever segment, it is characterized in that the constructing device includes top surface anchor, side anchor and steel construction hanger, the top surface anchor includes several top surface deformed bars in direction across bridge setting of two anchor blocks of anchor block and connection；The side anchor includes the side deformed bar in direction across bridge setting of the same side end of two fastener inserts of pre-buried anchoring assembly and connection；The steel construction hanger includes two hanger main bodys of two hanger main bodys and connection in the connector and pin rod assembly along bridge to setting.The invention has the advantages that passing through anchoring piece pre-buried in prefabricated bent cap, and the equipment such as steel construction hanger are installed on cantilever segment, guiding function can be played in place to the lifting of cantilever segment, and top surface anchor and side anchor can anchor cantilever segment and principal piece interim drawknot together, play good intermal force.
Description
Technical field
The present invention relates to bridge concrete Coping Construction technical fields, and in particular to a kind of precast segment bent cap free cantilever erection
Constructing device.
Background technique
Bridge concrete Coping Construction generally uses support cast-in-place method or integral prefabricated lifting construction method to realize at present.It is mixed
Coagulating earth mulch beam can significantly be shortened the construction period using prefabricated construction, reduce the construction road occupying time, and have quality height, security risk low
With the advantages such as environmental protection, thus at home and abroad in Urban Bridge using in the ascendant.
Common great cantilever bent cap form in urban viaduct more than six-lane, the beam length and Liang Chong of this bent cap are usually very
Greatly, the integral prefabricated crane capacity for being often limited by urban road transport restricted driving requirement and lifting appliance, and make integral prefabricated lifting
Construction method can not be implemented, and segment free cantilever erection construction method can solve this problem.
Segment free cantilever erection construction method has a large amount of successful applications in bridge superstructure, and wherein segmental joints can be adopted
It is glued with Conventional epoxy and is stitched, sets concrete shear key on joint face.However segmental construction method is applied man-hour requirement and is built bridge using large-scale
Machine, including erection crane system and the segment anchoring temporarily system etc. for lifting by crane segment, cost is very high, and equipment dismounting is multiple
Miscellaneous, turnover rate is very low, and the construction process time is long, is unfavorable for quickly spreading out and quickly finishing up for construction surface.
Summary of the invention
According to the deficiencies of the prior art described above, It is an object of the present invention to provide a kind of precast segment bent cap cantilevers to spell
Constructing device is filled, which includes top surface anchor, side anchor and steel construction hanger, outstanding using being fixed on
Steel construction hanger in arm section, which guides cantilever segment, keeps it horizontal in place, and top surface anchor and side anchor can incite somebody to action
The active force that the self weight of cantilever segment generates is effectively transferred to principal piece, to realize the anchoring temporarily to cantilever segment, accelerates splicing
Efficiency.
The object of the invention realization is completed by following technical scheme:
A kind of precast segment bent cap free cantilever erection constructing device, the prefabricated bent cap includes principal piece and cantilever segment, it is characterised in that
The constructing device includes top surface anchor, side anchor and steel construction hanger, in which:
The top surface anchor includes the anchoring for respectively corresponding the top surface of the top surface for being set to the principal piece and the cantilever segment
Several top surface deformed bars in direction across bridge setting of two anchor blocks of block and connection；
The side anchor include respectively correspond be set in the principal piece and the cantilever segment in along bridge to setting
The side prestressing force in direction across bridge setting of the same side end of two pre-buried anchoring assemblies of pre-buried anchoring assembly and connection
Reinforcing bar；
The steel construction hanger includes the two hanger main bodys and connection for being set to two side rising woods of the cantilever segment
Two hanger main bodys in the connector and pin rod assembly along bridge to setting.
The pre-buried anchoring assembly includes from several in the anchoring embedded steel tube formed along bridge to the embedded steel tube of setting
Group is equipped with anchoring reinforcing bar in the embedded steel tube, and the both ends revealed section of anchoring reinforcing bar is mounted with anchoring ear
Plate.
The quantity of the embedded steel tube is two, and two embedded steel tubes are in setting up and down and are located at same vertical plane
It is interior.
The front support end of the hanger main body stretches out in the Mosaic face of the cantilever segment and is supported in the top surface of the principal piece,
The rear support end of the hanger main body is supported in the top surface of the cantilever segment.
The lower part of the hanger main body offers earhole, is provided in the cantilever segment in the pre-buried steel along bridge to setting
Pipe, the central axes of the embedded steel tube pass through the hole heart of the earhole, and the pin rod assembly includes being threaded through the embedded steel tube
The both ends installation of interior anchoring reinforcing bar and the hollow pins stick being set in outside the anchoring reinforcing bar, the anchoring reinforcing bar is solid
Surely there is backing plate.
The top surface correspondence that the front support of the hanger main body rectifies the principal piece of lower section is embedded with front support pressure-bearing steel plate,
The top surface correspondence that the rear support of the hanger main body rectifies the cantilever segment of lower section is embedded with rear support pressure-bearing steel plate.
The front support end of the hanger main body is equipped with vertically arranged unidirectional top-fastening rod, and the unidirectional top-fastening rod includes interior
Threaded steel pipe and the external screw thread rod iron to match with the inner thread steel pipe.
Epoxy glue is coated on the Mosaic face of the principal piece and the cantilever segment
Shear connector is arranged at intervals on the Mosaic face of the principal piece and the cantilever segment.
The invention has the advantages that by anchoring piece pre-buried in prefabricated bent cap, and steel construction hanger is installed on cantilever segment
Etc. equipment, guiding function can be played in place to the lifting of cantilever segment, and top surface anchor and side anchor can will hang
Arm section and principal piece interim drawknot anchor together, play good intermal force.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of constructing device in the present invention；
Fig. 2 is the schematic diagram of A-A section in Fig. 1；
Fig. 3 is the structural schematic diagram of steel construction hanger in the present invention；
Fig. 4 is the structural schematic diagram of top surface anchor and side anchor in the present invention；
Fig. 5 is the hoisting process schematic diagram for splicing side cantilever segment in the present invention using steel construction hanger；
Fig. 6 is the work progress schematic diagram that top surface anchor and side anchor are installed in the present invention；
Fig. 7 is the hoisting process schematic diagram of other side cantilever segment in the present invention；
Fig. 8 is to do the schematic diagram that two sides cantilever segment and principal piece splicing are completed in invention.
Specific embodiment
Feature of the invention and other correlated characteristics are described in further detail by embodiment below in conjunction with attached drawing, with
Convenient for the understanding of technical staff of the same trade:
Such as Fig. 1-8, label 1-22 is respectively as follows: pier stud 1, principal piece 2, cantilever segment 3, hanger main body 4, pin rod assembly 5, anchor block in figure
6, top surface deformed bar 7, Mosaic face 8, anchoring otic placode 9, side deformed bar 10, principal piece suspension centre 11, cantilever segment suspension centre 12,
Sell stick embedded steel tube 13, pin stick reinforcing bar 14, hollow pins stick 15, side anchoring embedded steel tube 16, anchoring reinforcing bar 17, anchor
Admittedly using embedded steel tube component 18, unidirectional top-fastening rod 19, connector 20, front support pressure-bearing steel plate 21, rear support pressure-bearing steel plate 22.
Embodiment: as shown in figures 1-8, the present embodiment is specifically related to a kind of precast segment bent cap free cantilever erection constructing device,
The constructing device includes top surface anchor, side anchor and steel construction hanger, utilizes the steel being fixed on cantilever segment
Structure hanger, which guides cantilever segment 3, keeps it horizontal in place, and top surface anchor and side anchor can be by cantilever segments 3
The active force that self weight generates is effectively transferred to principal piece 2, to realize the anchoring temporarily to cantilever segment 3, accelerates splicing efficiency.
As shown in Figs 1-4, precast segment bent cap involved in the present embodiment includes a principal piece 2 and two symmetrical cantilever segments
3 compositions, principal piece 2 lift the top for being set to pier stud 1；It is constructed according to the lifting of principal piece 2,2 top surface of principal piece is provided with principal piece suspension centre
11, principal piece suspension centre 11 is located in the gravity vertical of principal piece 2；And 3 top surface of cantilever segment is then provided with cantilever segment suspension centre 12, cantilever segment suspension centre
12 are located on the gravity resultant force line of cantilever segment 3；It is arranged at intervals with shear connector on the Mosaic face of principal piece 2 and cantilever segment 3, for transmitting
The gravity that cantilever segment 3 is subject to, while epoxy glue is additionally provided on Mosaic face, for being bonded principal piece 2 and cantilever segment 3, it is ensured that principal piece 2
The transmitting of close contact and power between cantilever segment 3.
As shown in Figs 1-4, the constructing device in the present embodiment includes top surface anchor, side anchor and steel knot
Structure hanger；Wherein, top surface anchor includes the anchor block 6 for being correspondingly arranged at 3 top surface of 2 top surface of principal piece and cantilever segment, i.e. principal piece 2
With an anchor block 6 is respectively set on cantilever segment 3, and the line of two anchor blocks 6 and the direction across bridge of precast segment bent cap are in the same direction, anchoring
Block 6 is specially concrete anchor block, and prefabricated anchor block 6, anchor block 6 are set simultaneously in the prefabrication process of principal piece 2 and cantilever segment 3
Seated position and specific size size are then selected and are designed according to the self weight of cantilever segment 3 and partial pressing's principle.Two
Several anchor holes being located in same horizontal line are offered on a anchor block 6, between two anchor blocks 6 in corresponding anchor hole
Anchoring has the top surface deformed bar 7 being arranged in direction across bridge, and the quantity and length of top surface deformed bar 7 are according to cantilever segment 3
Self weight be determined, the top surface deformed bar 7 in the present embodiment be designed as 4 diameters be 40mm, the finish rolling that length is 6m
Screw-thread steel.Principal piece 2 and cantilever segment 3 can be carried out drawknot and fixed by top surface anchor, keep the part gravity of cantilever segment 3 solid through top surface
Determine device and be transferred to principal piece 2, realizes being tentatively fixed temporarily to cantilever segment 3.
As shown in Figs 1-4, side anchor include respectively correspond be arranged in principal piece 2 and cantilever segment 3 in along bridge to
It answers in advance the side in direction across bridge setting of the same side end for the two pre-buried anchoring assemblies of pre-buried anchoring assembly and connection being arranged
Power reinforcing bar 10.Specifically, several anchoring embedded steel tube components 18 of pre-buried anchoring assembly, anchoring embedded steel tube component include
The side anchoring embedded steel tube 16 being disposed therein in prefabricated principal piece 2 and cantilever segment 3, in order to ensure side is anchored with pre-buried
The position of steel pipe 16 is accurate, and one piece of positioning plate (not shown), side anchoring embedded steel tube 16 are respectively embedded at both ends
It is in anchoring reinforcing bar 17 of the suitable bridge to setting in, to setting, being inside equipped with along bridge same；Anchoring embedded steel tube component 18
Quantity requires to be designed selection, this reality according to the minimum average B configuration compression of design setting, the self weight of cantilever segment 3 and Mosaic face
Apply and specifically select two groups of anchoring embedded steel tube components 18 in example, and two groups of anchorings with embedded steel tube component 18 in it is setting up and down simultaneously
In same vertical plane；The length of anchoring reinforcing bar 17 exceeds the suitable bridge Xiang Kuandu of corresponding position principal piece 2 and cantilever segment 3,
I.e. anchoring stretches out in principal piece 2 and cantilever segment 3 with the both ends of reinforcing bar 17, and anchoring is mounted with anchoring ear with the revealed section of reinforcing bar 17
First two groups of anchoring embedded steel tube components 18 are formed firm stress entirety, second anchorage effect formed here by plate 9
Point, convenient for wearing side deformed bar 10.The anchoring otic placode of two pre-buried anchoring assemblies of the same side of i.e. prefabricated bent cap it
Between drawknot carried out by side deformed bar 10 fix, passed to being self-possessed the part of cantilever segment 3 by side anchor
It is handed to principal piece 2, further realizes being fixed temporarily to cantilever segment 3.
As shown in Figs 1-4, steel construction hanger includes two hanger main bodys 4, and hanger main body 4 is in inverted L shape, is symmetrical arranged
Rising wood in two non-splicing sides of cantilever segment 3, i.e. the top of hanger main body 4 is shelved on the side of precast segment bent cap
On, and the lower inside of hanger main body 4 then abuts the side wall of precast segment bent cap.The top of two hanger main bodys 4 by across
The connector 20 of 3 top surface of cantilever segment is attached fixation, and according to the weight of cantilever segment 3, the connector 20 in the present embodiment is specific
Selecting two diameters is the fining twisted steel of 40mm.The lower part of each hanger main body 4 offers earhole, in the inside of cantilever segment 3
It is provided with pin stick embedded steel tube 13, pin stick embedded steel tube 13 is in along bridge to setting, and axis passes through two hanger main bodys 4
The hole heart of earhole；The lower part of two hanger main bodys 4 carries out drawknot by pin rod assembly 5 and fixes, specifically, pin rod assembly 5 includes
Hollow pins stick 15 and pin stick reinforcing bar 14, hollow pins stick 15 is set in 14 periphery of pin stick reinforcing bar, and sells rod assembly 5 and be then threaded through
Stick is sold with 13 inside of embedded steel tube and passes through the earhole of hanger main body 4；It sells stick and backing plate is installed with the both ends of reinforcing bar 14, and pass through
Nut is pierced into pin stick reinforcing bar 14 and is fastened to hollow pins stick 15, prevents hollow pins stick 6 from slipping, but allows hollow pins stick 6
Restricted rotational movement occurs, meets the rotating requires of steel construction hanger in the construction process, the outer diameter and hanger main body 4 of hollow pins stick 15
Earhole diameter difference require within 5mm.Steel construction hanger can play guidance 3 water of cantilever segment in 3 hoisting process of cantilever segment
Translation is dynamic and accurate in place.
As shown in Figs 1-4, the front support end of hanger main body 4 stretches out in Mosaic face 8, i.e. front support end is supported on principal piece 2
On top surface, then support end is then supported on the top surface of cantilever segment 3, and front support end is equipped with unidirectional top-fastening rod 19, and by being somebody's turn to do
Unidirectional top-fastening rod 19 carries out power transmission, and unidirectional top-fastening rod 19 includes inner thread steel pipe and matched external screw thread rod iron, outer spiral shell
The smooth evagination in the front end of line rod iron can transmit vertical pressure, it is synchronous guarantee vertical deformation, while can satisfy horizontal direction
Position adjusts demand.Principal piece 2 is embedded with front support pressure-bearing steel plate in the underface corresponding position at the front support end of hanger main body 4
10, and cantilever segment 2 is embedded with rear support pressure-bearing steel plate 11 in the underface corresponding position at the rear support end of hanger main body 4, from
And prevent the unnecessary contact of hanger main body 4 and precast segment bent cap from causing the structural failure of precast segment bent cap.The present embodiment
The distance between the fulcrum and the fulcrum at rear support end at the front support end of middle hanger main body 4 are 2.5m, and the fulcrum at front support end arrives
The distance of Mosaic face 8 is 0.5m, and the distance of fulcrum to the Mosaic face 8 at rear support end is 2m, by spatial numerical analysis, steel construction
Design maximum bearing capacity of the hanger at pin rod assembly 5 is greater than 100t, even if the shear connector at Mosaic face is all not involved in transmitting
Cantilever segment 3 is self-possessed, and also ensures that the self weight of cantilever segment 3 can be all transmitted in principal piece 2 by steel construction hanger.
As viewed in figures 5-8, the installation and application of the precast segment bent cap cantilever segment assembling construction device in the present embodiment
It is as follows:
(1) anchor block 6, pin stick embedded steel tube 13 and side anchor is arranged in prefabricated principal piece 2 and cantilever segment 3 in prefabrication process
Admittedly using embedded steel tube 16.
(2) lifting of principal piece 2 is fixed in place, steel construction hanger is installed, is set to two hanger main bodys 4 in installation process
On the side of cantilever segment 3, hollow pins stick 15 is then set in pin stick with the peripheral ear for sequentially passing through hanger main body 4 again of reinforcing bar 14
Hole and pin stick with embedded steel tube 13 and are anchored, and the preliminary installation of steel construction hanger is completed；Then mounting hung rack main body 4 it
Between connector 20, and carry out tensioning and fix, to balance hanger main body 4 in construction because of the horizontal force that is generated by eccentric load,
Two hanger main bodys 4 are made to form entirety.
(3) anchoring embedded steel tube component 18 is installed, i.e., anchoring reinforcing bar 17 is threaded through side anchoring embedded steel tube
In 16, anchoring otic placode is fixedly mounted in the revealed section of anchoring reinforcing bar 17, and is fixed with nut.
(4) smear epoxy glue on Mosaic face 8, sling cantilever segment 3 using ground crane in 30 minutes, after lifting from
Overhead gradually moves down, and the front support end of steel construction hanger 4 is located at the top of principal piece 2 at this time；Then, it is guided using steel construction hanger
Cantilever segment 3 moves horizontally, and keeps cantilever segment 3 preliminary in place, cantilever segment 3 and the Mosaic face of principal piece 28 are substantially flush at this time, unidirectional to push up
Tight bar 19 and front support pressure-bearing steel plate 21 are aligned；Prefastened unidirectional top-fastening rod 19, it is ensured that tight between steel construction hanger and principal piece 2
The transmitting of contiguity touching and power.
(5) it is ascended a height machine using ground, the side of seating side deformed bar 10, the symmetrical prefabricated bent cap two sides of tensioning is answered in advance
It is anchored after power reinforcing bar 10 to design value；Unidirectional top-fastening rod 19 is fastened again, and unidirectional top-fastening rod is made to be supported on front support pressure-bearing steel plate
On 21, the preliminary latch of cantilever segment 3 is completed；
(6) top surface deformed bar 7 is installed, in groups symmetrical tensioning top surface deformed bar 7, the top surface prestressing force in the present embodiment
Reinforcing bar 7 includes two groups, every group two；First group of top surface deformed bar 7 carries out the tensioning of three stages, per stage tensioning to design value
After hold lotus for a period of time, then correspondingly unload the design hoist of ground crane, be further continued for holding lotus carry out afterwards for a period of time it is next
Stage tensioning, until deformed bar reaches tensioning design value and is anchored；Second group of top surface deformed bar 7 carries out two ranks
Duan Zhangla holds lotus for a period of time after per stage tensioning to design value, then correspondingly unloads the design hoist of ground crane, followed by
It is continuous to hold lotus progress next stage tensioning afterwards for a period of time, it is anchored after top surface deformed bar 7 reaches tensioning design value；
Ground crane can unload whole cantilever segments 3 and be self-possessed at this time, and cantilever segment 3 and principal piece 2 realize complete temporary consolidation；Cleaning in time is simultaneously
Strike off the epoxy glue that 8 edge of Mosaic face is extruded；By numerical analysis and calculating, do not occur on Mosaic face 8 in construction overall process
Tensile stress, after the completion of temporary consolidation, the average compressive stress on segmental joints face 7 reaches 0.5Mpa, it is ensured that the stabilization of temporary consolidation
Property.
(7) other side cantilever segment 3 is installed using foregoing schemes, completes the quick-assembling of prefabricated bent cap.
Top surface anchor, side anchor and steel construction hanger three's collective effect in the present embodiment, by cantilever
In weight transfer to principal piece 2 suffered by section 3, so that can be achieved in 3 hoisting process of cantilever segment quick interim solid with principal piece 2
It is fixed, accelerate the assembled efficiency of precast segment bent cap cantilever.
The beneficial effect of the present embodiment is: by anchoring piece pre-buried in prefabricated bent cap, and steel knot is installed on cantilever segment
The equipment such as structure hanger can play in place guiding function, and top surface anchor and side anchor to the lifting of cantilever segment
Cantilever segment and principal piece interim drawknot can be anchored together, play good intermal force, accelerate splicing efficiency.
Claims (9)
1. a kind of precast segment bent cap free cantilever erection constructing device, the prefabricated bent cap includes principal piece and cantilever segment, and feature exists
In the constructing device include top surface anchor, side anchor and steel construction hanger, in which:
The top surface anchor includes the anchoring for respectively corresponding the top surface of the top surface for being set to the principal piece and the cantilever segment
Several top surface deformed bars in direction across bridge setting of two anchor blocks of block and connection；
The side anchor include respectively correspond be set in the principal piece and the cantilever segment in along bridge to setting
The side prestressing force in direction across bridge setting of the same side end of two pre-buried anchoring assemblies of pre-buried anchoring assembly and connection
Reinforcing bar；
The steel construction hanger includes the two hanger main bodys and connection for being set to two side rising woods of the cantilever segment
Two hanger main bodys in the connector and pin rod assembly along bridge to setting.
2. a kind of precast segment bent cap free cantilever erection constructing device according to claim 1, it is characterised in that described pre-buried
Anchoring assembly includes from several in the anchoring embedded steel tube groups formed to the embedded steel tube of setting along bridge, in the embedded steel tube
It is equipped with anchoring reinforcing bar, the both ends revealed section of anchoring reinforcing bar is mounted with anchoring otic placode.
3. a kind of precast segment bent cap free cantilever erection constructing device according to claim 2, it is characterised in that described pre-buried
The quantity of steel pipe is two, and two embedded steel tubes are in setting up and down and are located in same vertical plane.
4. a kind of precast segment bent cap free cantilever erection constructing device according to claim 1, it is characterised in that the hanger
The front support end of main body stretches out in the Mosaic face of the cantilever segment and is supported in the top surface of the principal piece, after the hanger main body
Support end is supported in the top surface of the cantilever segment.
5. a kind of precast segment bent cap free cantilever erection constructing device according to claim 4, it is characterised in that the hanger
The lower part of main body offers earhole, is provided in the cantilever segment in the embedded steel tube along bridge to setting, the embedded steel tube
Central axes pass through the earhole the hole heart, the pin rod assembly include the anchoring reinforcing bar being threaded through in the embedded steel tube and
The both ends of the hollow pins stick being set in outside the anchoring reinforcing bar, anchoring reinforcing bar are mounted with backing plate.
6. a kind of precast segment bent cap free cantilever erection constructing device according to claim 4, it is characterised in that the hanger
The top surface that the front support of main body rectifies the principal piece of lower section, which corresponds to, is embedded with front support pressure-bearing steel plate, after the hanger main body
The top surface correspondence of the cantilever segment immediately below support end is embedded with rear support pressure-bearing steel plate.
7. a kind of precast segment bent cap free cantilever erection constructing device according to claim 4, it is characterised in that the hanger
The front support end of main body is equipped with vertically arranged unidirectional top-fastening rod, the unidirectional top-fastening rod include inner thread steel pipe and with it is described
The external screw thread rod iron that inner thread steel pipe matches.
8. a kind of precast segment bent cap free cantilever erection constructing device according to claim 1, it is characterised in that the principal piece
Epoxy glue is coated with on the Mosaic face of the cantilever segment.
9. a kind of precast segment bent cap free cantilever erection constructing device according to claim 1, it is characterised in that the principal piece
Shear connector is arranged at intervals with on the Mosaic face of the cantilever segment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910627578.2A CN110318342B (en) | 2019-07-12 | 2019-07-12 | Construction equipment is assembled to prefabricated bent cap cantilever of festival section |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910627578.2A CN110318342B (en) | 2019-07-12 | 2019-07-12 | Construction equipment is assembled to prefabricated bent cap cantilever of festival section |
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| CN110318342A true CN110318342A (en) | 2019-10-11 |
| CN110318342B CN110318342B (en) | 2024-06-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110820531A (en) * | 2019-10-18 | 2020-02-21 | 同济大学 | Repeatedly-detachable capping beam structure design and implementation method |
| CN112112052A (en) * | 2020-08-26 | 2020-12-22 | 绍兴文理学院 | Prefabricated bent cap longitudinal connecting system for assembled beam bridge and construction method of prefabricated bent cap longitudinal connecting system |
| CN112627059A (en) * | 2020-12-21 | 2021-04-09 | 中建八局第三建设有限公司 | Pier-beam integrated bridge girder erection machine and via hole construction method |
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| CN110318342B (en) | 2024-06-18 |
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