CN207314122U - Concrete cracking prevention structure for hogging moment area of steel plate combination beam - Google Patents
Concrete cracking prevention structure for hogging moment area of steel plate combination beam Download PDFInfo
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- CN207314122U CN207314122U CN201721258811.7U CN201721258811U CN207314122U CN 207314122 U CN207314122 U CN 207314122U CN 201721258811 U CN201721258811 U CN 201721258811U CN 207314122 U CN207314122 U CN 207314122U
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- steel strand
- flanging
- steel
- tooth form
- latch
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 100
- 239000010959 steel Substances 0.000 title claims abstract description 100
- 239000004567 concrete Substances 0.000 title claims abstract description 24
- 238000005336 cracking Methods 0.000 title claims abstract description 18
- 230000002265 prevention Effects 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 claims description 21
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 230000000149 penetrating effect Effects 0.000 abstract 2
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000036316 preload Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a steel plate combination beam hogging moment area concrete cracking prevention structure, which comprises a first buckle device arranged at the lower flange of an I-shaped steel, a second buckle device arranged on a pier, a steel strand and a tension device, wherein two ends of the steel strand are respectively penetrated into a first steel strand penetrating hole and a second steel strand penetrating hole which are preset by the first buckle device and the second buckle device; the tensioning device is arranged at the bottom of the second buckling device and used for tensioning the steel strand. The utility model discloses to the continuous bridge of current I shaped steel roof beam integrated configuration, set up buckle device in I-shaped steel roof beam and pier department to wear into steel strand wires, utilize feed-through jack to carry out stretch-draw to steel strand wires, in order to reach and carry out the effect of preloading to striding well positive moment district. The device not only can be prefabricated in the mill, and the scene is assembled, and it is convenient to dismantle, easy operation, compares with traditional water tank ballast moreover, and loading uninstallation convenient and fast more, and easily control.
Description
Technical field
It the utility model is related to steel reinforced concrete combined bridge construction field, and in particular to steel plate combination negative moment section of beam concrete is opened
Split prevention construction.
Background technology
Composite Steel-Concrete Bridges because its span is big, from heavy and light, good economy performance, it is easy for construction the advantages that, in world wide
Inside it is widely used.As bridge develops to lightness and large span direction, steel-mixed combination beam is also from freely supported structure to more bridgings
Continuous structural development.For steel reinforced concrete continuous composite beam compared with Beams, its pier top hogging moment area can produce concrete in tension, girder steel
The rough sledding of compression.How to control the cracking of pier top hogging moment area concrete slab is to solve continuous composite beam design problem
Key.
The common method that solves the above problems at present in work progress is loading counterweight method, its action principle is to make full use of
The elastic deformation recovery capability of steel, the concrete slab in positive moment of span central point area is first poured before loading counterweight, after its hardening
Selection counterweight is preloaded, and then pours the concrete slab of hogging moment area, and counterweight is gone in design strength recession to be achieved.By
In the unloading of sagging moment section ballast, fulcrum nearby produces a reverse sagging moment, reaches prestressed effect.
Construction site generally uses water tank as ballast at present, but water tank has inconvenience part as weight.
First, water tank space is big, influences current and material the transport of ballast section construction equipment；Secondly, water tank lifting, water tank
Interior water filling is drawn water etc., and work progress is cumbersome, and time-consuming, influences construction efficiency.Therefore, from raising construction efficiency, the mesh shortened the construction period
Set out, create and a kind of not only met counterweight requirements but also preloading device convenient for disassembly and assembly is of great significance.
In view of defect existing for above-mentioned existing steel reinforced concrete compoboard beam bridge, the present inventor is based on being engaged in such product design
Manufacture abundant for many years practical experience and professional knowledge, and coordinate the utilization of scientific principle, actively it is subject to research and innovation, to found one
Kind steel plate combination negative moment section of beam concrete cracking prevention construction, makes it have more practicality.By constantly research, design,
And after studying sample repeatedly and improving, the utility model having practical value is created finally.
Utility model content
The main purpose of the utility model is that overcoming defect existing for existing steel reinforced concrete compoboard beam bridge, and provide one
Kind steel plate combination negative moment section of beam concrete cracking prevention construction, by setting bayonet unit at steel I-beam and bridge pier, with
Just steel strand wires are penetrated, tensioning is carried out to steel strand wires using centre-hole jack, positive moment of span central point area is preloaded with reaching
Effect, thus more suitable for practicality, and with the utility value in industry.
The purpose of this utility model and its technical problem is solved using following technical scheme to realize.
Steel plate combination negative moment section of beam concrete cracking prevention construction, including it is arranged on the first card at I-steel lower flange
Buckle device, the second bayonet unit, steel strand wires and the tensioning equipment being arranged on bridge pier, wherein,
The both ends of the steel strand wires are threaded through first bayonet unit and second bayonet unit default respectively
One steel strand wires penetrate hole and the second steel strand wires are penetrated in hole；
The tensioning equipment is arranged on the bottom of second bayonet unit, for steel strand wires described in tensioning.
Further, first bayonet unit includes：
First component, the first component include the first flanging, the second flanging and the 3rd flanging of orthogonal setting, its
Described in the first flanging and the 3rd flanging be arranged in parallel in the same side of second flanging；The end of 3rd flanging
It is provided with the first tooth form latch；
Second component, the second component include Fourth Fold, the 5th flanging and the 6th flanging of orthogonal setting, its
Described in Fourth Fold and the 6th flanging be arranged in parallel in the same side of the 5th flanging；The end of 6th flanging
The first latch groove corresponding with the first tooth form latch is provided with, and the first locking dress is provided with first latch groove
Put, for the first tooth form latch to be locked in first latch groove；
First steel strand wires penetrate hole, are fixed at the lower end of the first component or second component.
Further, the lower end of first flanging and the Fourth Fold is provided with rubber cushion blocks.
Further, first locking device is arranged on the bottom of first latch groove, and the first locking dress
Put including：
Tooth form fastener, identical with the odontoid of the first tooth form latch, the tooth form fastener first end, which rotates, to be set
Inside first latch groove；
Lock is rotated, by rotating the rotation for rotating lock adjusting and being connected to the rotor plate that the rotation lock is buckled,
And then adjust the rotation of the second end of the tooth form fastener；
Elasticity steel wire, is arranged between the tooth form fastener and first latch groove, for controlling the tooth form fastener
It is horizontal under force-free state.
Further, second bayonet unit includes：
Third member, the third member cross section are concave shape, and are set respectively in the top ends of the third member
There are two the second tooth form latches；
4th component, the 4th part cross section are concave shape, and are set respectively in the top ends of the 4th component
There are two the second latch grooves corresponding with the second tooth form latch；
Second locking device, second locking device are two, are separately positioned in two second latch grooves, are used
It is locked in by the second tooth form latch in second latch groove；
The bottom of the third member and the 4th component is respectively arranged with least two second steel strand wires and penetrates hole.Into
One step, further include expansive mortar, be arranged between the bridge pier and second bayonet unit, for fix the bridge pier with
The connection of second bayonet unit.
Further, second steel strand wires penetrate hole and are arranged in parallel with the bridge pier, and second steel strand wires penetrate
The bottom in hole is connected with the tensioning equipment.
Further, the tensioning equipment includes centre-hole jack.
Further, the tensioning equipment further includes channel-section steel, the channel-section steel be arranged on the centre-hole jack and
For disperseing the pressure of the centre-hole jack 41, and it is the anchoring of steel strand wires after tensioning between second bayonet unit
Operating space is provided.
Using above-mentioned technical proposal, following technique effect can be realized：The utility model is directed to existing i-shape steel beam
Combining structure Continuous Bridge, sets bayonet unit at steel I-beam and bridge pier, very heavy using punching to penetrate steel strand wires
Top carries out tensioning to steel strand wires, to have the function that to preload positive moment of span central point area.The device not only can prefabrication,
On-site consolidation, convenient disassembly is easy to operate, and compared with traditional water tank ballast, loading and unloading enhanced convenience is quick, and
It is easily controllable.
Brief description of the drawings
Fig. 1 is structure diagram when the utility model preventing mean uses；
Fig. 2 is A-A directions schematic cross-section in Fig. 1；
Fig. 3 is B-B directions schematic cross-section in Fig. 1；
Fig. 4 is the partial enlarged view on the first bayonet unit in Fig. 1；
Fig. 5 is structure diagram when the first bayonet unit is dismantled；
Fig. 6 is structure diagram when the first bayonet unit closes；
Fig. 7 is the partial enlarged view on the second bayonet unit in Fig. 1；
Fig. 8 is the second bayonet unit structure diagram；
Wherein：The first bayonet units of 1-, 11- first components, the first flangings of 111-, the second flangings of 112-, the 3rd foldings of 113-
Side, 114- the first tooth form latches, 12- second components, 121- Fourth Folds, the 5th flangings of 122-, the 6th flangings of 123-, 124-
One latch groove, the first locking devices of 125-, 1251- tooth form fasteners, 1252- rotate lock, 1253- elasticity steel wires, the first steel of 13-
Twisted wire penetrates hole, 14- rubber cushion blocks；
The second bayonet units of 2-, 21- perforation cylindrical holes, the second steel strand wires of 22- penetrate hole, 23- expansive mortars.24- the 3rd
Component, the 4th components of 25-；
3- steel strand wires；
4- tensioning equipments, 41- centre-hole jacks, 42- channel-section steels；
5- I-steel；
6- bridge piers.
Embodiment
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose of utility model taken,
To according to the utility model proposes the prevention of steel plate combination negative moment section of beam concrete cracking construct its embodiment, feature
And its effect, describe in detail as after.
To be constructed as shown in Figure 1, the utility model discloses a kind of prevention of steel plate combination negative moment section of beam concrete cracking, bag
Include the first bayonet unit 1 being arranged at 5 lower flange of I-steel, the second bayonet unit 2 being arranged on bridge pier 6,3 and of steel strand wires
Tensioning equipment 4, wherein,
The both ends of steel strand wires 3 are threaded through the first bayonet unit 1 respectively and 2 default first steel strand wires of the second bayonet unit are worn
Enter 13 and second steel strand wires of hole to penetrate in hole 22, tensioning equipment 4 is arranged on the bottom of the second bayonet unit 2, twists for tensioning steel
Line 3.It is opened by tensioning equipment 4 by the way that steel strand wires 3 are arranged in after the first bayonet unit 1 and the second bayonet unit 2
Drawing is handled, so as to have the function that to preload positive moment of span central point area.
As shown in figure 4, the first bayonet unit 1 includes：
First component 11, first component 11 include the first flanging 111, the second flanging 112 and the 3rd of orthogonal setting
Flanging 113, wherein the first flanging 111 and the 3rd flanging 113 are arranged in parallel in the same side of the second flanging 112, and respectively with
Two flangings 112 are vertical, it is preferred that the first flanging 111 is identical with the length of the 3rd flanging 113；The end of other 3rd flanging 113
It is provided with the first tooth form latch 114.
Second component 12, second component 12 include Fourth Fold 121, the 5th flanging 122 and the 6th of orthogonal setting
Flanging 123, wherein 121 and the 6th flanging 123 of Fourth Fold are arranged in parallel in the same side of the 5th flanging 122, and respectively with
Five flangings 122 are vertical；The end set of 6th flanging 123 have with 114 corresponding first latch groove 124 of the first tooth form latch,
One tooth form latch 114 is inserted into the first latch groove 124, and the first locking device 125 is provided with the first latch groove 124,
For the first tooth form latch 114 to be locked in the first latch groove 124.When in use, Part I and Part II are closed,
Form complete flute profile bayonet unit, the base of 123 finally formed flute profile bayonet unit of the 3rd flanging 113 and the 6th flanging,
Its length is more than the overall length of the first flanging 111 and Fourth Fold 121, and the second flanging 112 is isometric with the 5th flanging 122 and is all higher than
The thickness in the edge of a wing portion of i-shape steel beam, therefore i-shape steel beam can be freely put into concave groove.
First steel strand wires penetrate hole 13, are fixed at the lower end of first component 11 or second component 12.
In order to avoid causing the abrasion of 5 lower flange of I-steel and the contact site of the first bayonet unit 1, therefore the first flanging
111 and the lower end of Fourth Fold 121 be preset with rubber cushion blocks 14.
Further, the first locking device 125 is arranged on the bottom of the first latch groove 124, and the first locking device 125 wraps
Include：
Tooth form fastener 1251, identical with the odontoid of the first tooth form latch 114,1251 first end of tooth form fastener is rotated and set
Put inside the first latch groove 124；Rotation lock 1252, rotation lock 1252 is connected to by rotating the adjusting of lock 1252
On rotor plate rotation, and then adjust the rotation of the second end of tooth form fastener 1251；Elasticity steel wire 1253, is arranged on tooth form
Between 1251 and first latch groove 124 of fastener, for controlling tooth form fastener 1251 to be horizontal under force-free state.Tooth
Shape fastener 1251 maintains essentially in horizontal level under the action of elasticity steel wire 1253, when the first tooth form latch 114 is inserted into first
By 1251 clamping of tooth form fastener after in latch groove 124, the first tooth form latch 114 can not be exited the first latch groove 124, to first
When bayonet unit 1 is removed, rotate lock 1252 and rotate clockwise, drive tooth form fastener 1251 around the first end inverse time
Pin rotates, and tooth form fastener 1251 is departed from the contact with the first tooth form latch 114, so that the first tooth form latch 114 can be suitable
Profit is extracted, and makes the first bayonet unit 1 can be with disassembly ease.
As shown in figure 3, the second bayonet unit 2 has the structure identical with the first bayonet unit 1, the second bayonet unit 2 wraps
Include：Third member 24,24 cross section of third member are concave shape, and are respectively arranged with two in the top ends of third member 24
Two tooth form latches；4th component 25,25 cross section of the 4th component are concave shape, and are set respectively in the top ends of the 4th component 25
There are two the second latch grooves corresponding with the second tooth form latch；Second locking device, the second locking device are two, are set respectively
In two the second latch grooves, for the second tooth form latch to be locked in the second latch groove.Wherein the second locking device and
The structure of one locking device 125 is identical.Together with third member 24 is fastened on the 4th component 25, being formed has perforation cylindrical hole 21
Column construction, wherein perforation cylindrical hole 21 cross section be not less than bridge pier 6 sectional area, to enable the second bayonet unit 2
Enough easily it is buckled on bridge pier 6 by the buckle of both sides.
The bottom of 24 and the 4th component 25 of third member is respectively arranged with least two second steel strand wires and penetrates hole 22, preferably
, the second steel strand wires penetrate hole 22 as six, are uniformly arranged on respectively on the second bayonet unit 2.And second steel strand wires penetrate hole
22 are arranged in parallel with bridge pier 6, and the second steel strand wires penetrate the bottom in hole 22 and are connected with tensioning equipment 4.
Further, expansive mortar 23 is further included, is arranged between 6 and second bayonet unit 2 of bridge pier, for fixed abutment
6 and second bayonet unit 2 connection, prevent from occurring between the two opposite slide.
Further, tensioning equipment 4 includes centre-hole jack 41.
Further, tensioning equipment 4 further includes channel-section steel 42, and channel-section steel 42 is arranged on the card of centre-hole jack 41 and second
Between buckle device 2, for disperseing the pressure of centre-hole jack 41, and the anchoring for steel strand wires after tensioning provides operating space.
It is pre- to bridge progress prestressing force that construction is prevented using the utility model steel plate combination negative moment section of beam concrete cracking
During load, the first bayonet unit 1, the second bayonet unit 2 are separately mounted on i shaped steel and bridge pier 6 first, and such as Fig. 1 institutes
Show, each first bayonet unit 1 corresponds to two the second adjacent bayonet units 2, and the first bayonet unit 1 is arranged on two second
On the central axis of bayonet unit 2.Steel strand wires 3 are threaded through to the first steel strand wires penetrate hole 13 and two the second steel strand wires penetrate hole
In 22, the both ends of steel strand wires 3 are anchored in the bottom of the second bayonet unit 2 of both sides respectively, and the second bayonet unit 2 of both sides is with master
Girder span is arranged symmetrically centered on middle section.Be anchored in the steel strand wires 3 of 2 bottom of the second bayonet unit by centre-hole jack 41 into
The symmetrical tensioning of row.After tensioning, the steel strand wires 3 of elongation are anchored in the bottom of the second bayonet unit 2, unloading tensioning dress again
Put 4.At this time, preloading device preloads application and terminates, the preloading stabilization of application and easy to control.
, only need to be by the anchored end of steel strand wires 3 after when pier top hogging moment area, concrete slab pours completion and reaches design strength
Release constraint, the load of application can unload freely.
The above descriptions are merely preferred embodiments of the present invention, and not the utility model is made in any form
Limitation, although the utility model has been disclosed with preferred embodiment as above, but be not limited to the utility model, it is any ripe
Professional and technical personnel is known, is not being departed from the range of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification made according to the technical essence of the utility model to above example, still
Belong in the range of technical solutions of the utility model.
Claims (8)
1. steel plate combination negative moment section of beam concrete cracking prevention construction, it is characterised in that including being arranged on I-steel lower flange
First bayonet unit at place（1）, be arranged on bridge pier（6）On the second bayonet unit（2）, steel strand wires（3）And tensioning equipment（4）,
Wherein,
The steel strand wires（3）Both ends be threaded through first bayonet unit respectively（1）With second bayonet unit（2）It is default
The first steel strand wires penetrate hole（13）Hole is penetrated with the second steel strand wires（22）It is interior；
The tensioning equipment（4）It is arranged on second bayonet unit（2）Bottom, for steel strand wires described in tensioning（3）.
2. steel plate combination negative moment section of beam according to claim 1 concrete cracking prevention construction, it is characterised in that described
First bayonet unit（1）Including：
First component（11）, the first component（11）The first flanging including orthogonal setting（111）, the second flanging
（112）With the 3rd flanging（113）, wherein first flanging（111）With the 3rd flanging（113）It is arranged in parallel in described
Two flangings（112）The same side；3rd flanging（113）End set have the first tooth form latch（114）；
Second component（12）, the second component（12）Include the Fourth Fold of orthogonal setting（121）, the 5th flanging
（122）With the 6th flanging（123）, wherein the Fourth Fold（121）With the 6th flanging（123）It is arranged in parallel in described
Five flangings（122）The same side；6th flanging（123）End set have and the first tooth form latch（114）It is corresponding
The first latch groove（124）, and first latch groove（124）Inside it is provided with the first locking device（125）, for by described
One tooth form latch（114）It is locked at first latch groove（124）It is interior；
First steel strand wires penetrate hole（13）, it is fixed at the first component（11）Or second component（12）Lower end.
3. steel plate combination negative moment section of beam according to claim 2 concrete cracking prevention construction, it is characterised in that described
First flanging（111）With the Fourth Fold（121）Lower end be provided with rubber cushion blocks（14）.
4. steel plate combination negative moment section of beam according to claim 2 concrete cracking prevention construction, it is characterised in that described
First locking device（125）It is arranged on first latch groove（124）Bottom, and first locking device（125）Including：
Tooth form fastener（1251）, with the first tooth form latch（114）Odontoid it is identical, the tooth form fastener（1251）First
End is rotatably arranged on first latch groove（124）It is internal；
Rotate lock（1252）, latched by rotating described rotate（1252）Adjusting is connected to described rotate and latches（1252）On
The rotation of rotor plate, and then adjust the tooth form fastener（1251）The second end rotation；
Elasticity steel wire（1253）, it is arranged on the tooth form fastener（1251）With first latch groove（124）Between, for controlling
The tooth form fastener（1251）It is horizontal under force-free state.
5. prevent to construct according to claim 1-4 any one of them steel plate combinations negative moment section of beam concrete cracking, its feature
It is, second bayonet unit（2）Including：
Third member（24）, the third member（24）Cross section is concave shape, and in the third member（24）Top ends
It is respectively arranged with two the second tooth form latches；
4th component（25）, the 4th component（25）Cross section is concave shape, and in the 4th component（25）Top ends
It is respectively arranged with two the second latch grooves corresponding with the second tooth form latch；
Second locking device, second locking device are two, are separately positioned in two second latch grooves, for inciting somebody to action
The second tooth form latch is locked in second latch groove；
The third member（24）With the 4th component（25）Bottom be respectively arranged with least two second steel strand wires and penetrate
Hole（22）.
6. steel plate combination negative moment section of beam according to claim 5 concrete cracking prevention construction, it is characterised in that also wrap
Include expansive mortar（23）, it is arranged on the bridge pier（6）With second bayonet unit（2）Between, for fixing the bridge pier（6）
With second bayonet unit（2）Connection.
7. steel plate combination negative moment section of beam according to claim 5 concrete cracking prevention construction, it is characterised in that described
Second steel strand wires penetrate hole（22）With the bridge pier（6）It is arranged in parallel, and second steel strand wires penetrate hole（22）Bottom with
The tensioning equipment（4）Connection.
8. steel plate combination negative moment section of beam according to claim 6 concrete cracking prevention construction, it is characterised in that described
Tensioning equipment（4）Including centre-hole jack（41）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721258811.7U CN207314122U (en) | 2017-09-28 | 2017-09-28 | Concrete cracking prevention structure for hogging moment area of steel plate combination beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721258811.7U CN207314122U (en) | 2017-09-28 | 2017-09-28 | Concrete cracking prevention structure for hogging moment area of steel plate combination beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207314122U true CN207314122U (en) | 2018-05-04 |
Family
ID=62428412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721258811.7U Active CN207314122U (en) | 2017-09-28 | 2017-09-28 | Concrete cracking prevention structure for hogging moment area of steel plate combination beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207314122U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841951A (en) * | 2017-09-28 | 2018-03-27 | 苏交科集团股份有限公司 | Preloading device for controlling pier top concrete cracks of steel-concrete composite beam bridge and construction method |
| CN111881608A (en) * | 2020-07-31 | 2020-11-03 | 中车青岛四方机车车辆股份有限公司 | Crack arrest device size obtaining method and crack arrest device |
-
2017
- 2017-09-28 CN CN201721258811.7U patent/CN207314122U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841951A (en) * | 2017-09-28 | 2018-03-27 | 苏交科集团股份有限公司 | Preloading device for controlling pier top concrete cracks of steel-concrete composite beam bridge and construction method |
| CN111881608A (en) * | 2020-07-31 | 2020-11-03 | 中车青岛四方机车车辆股份有限公司 | Crack arrest device size obtaining method and crack arrest device |
| CN111881608B (en) * | 2020-07-31 | 2024-02-20 | 中车青岛四方机车车辆股份有限公司 | Method for obtaining size of crack stopper and crack stopper |
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