CN211312231U - A bearing support for construction of cast-in-place bridge superstructure - Google Patents
A bearing support for construction of cast-in-place bridge superstructure Download PDFInfo
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- CN211312231U CN211312231U CN201922126075.5U CN201922126075U CN211312231U CN 211312231 U CN211312231 U CN 211312231U CN 201922126075 U CN201922126075 U CN 201922126075U CN 211312231 U CN211312231 U CN 211312231U
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- shaped steel
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Abstract
The utility model relates to a bearing support for the construction of the upper structure of a cast-in-place bridge, wherein each first double I-steel and two reinforcing steel bars, a pair of hoops arranged in pairs and two second double I-steels form a bearing unit; each hoop comprises a hoop main body and 2 hoop bearings, the hoops arranged in pairs are fastened and fixed on the outer wall of the pier of the cast-in-place bridge, and the 2 hoop bearings are symmetrically arranged relative to the outer wall of the pier; the first double I-shaped steel is arranged on the upper surface of the cover beam, the first double I-shaped steel is vertical to the length direction of the cover beam, the two reinforcing steel bars are respectively parallel to the pier stud and fixedly penetrate through the hoop bearing and the first double I-shaped steel, the second double I-shaped steel is fixed on the upper surface of the hoop bearing, and the second double I-shaped steel is arranged in the longitudinal bridge direction of the cast-in-place bridge; can transmit the bent cap with the very big partial load weight that is transmitted by the staple bolt through the reinforcing bar, guarantee that the staple bolt can not take place to slide and warp, guarantee that the girder has better linear shape after the construction is accomplished.
Description
Technical Field
The utility model belongs to the technical field of the bridge construction, specifically be a bearing support for construction of cast-in-place bridge superstructure.
Background
In the process of infrastructure construction in China, bridges constructed in urban elevated buildings and mountainous areas crossing canyons and constructed by adopting a cast-in-place method face the situation that supports are too high, and the situation that supports are too high generally occurs in the construction of main beams with poor geological conditions or requirements on occupied areas, such as urban elevated buildings, mountainous areas crossing canyon bridges and the like. Under the condition of high piers, a large number of steel pipe frames are inevitably needed when the construction is continuously carried out by adopting the full framing method.
Because the pier is higher, the construction cycle is long, and the support is too high and causes the circumstances of unstability and the construction degree of difficulty great easily and takes place, and the security is difficult to guarantee. The existing bearing support relies on the friction force of the anchor ear and the pier stud to provide support, but when the self weight and the construction load caused by the large span of the upper structure are large, the self weight and the construction load cannot be sufficiently born by the friction force, and the problems are increasingly highlighted along with the trend that the span and the width of the bridge deck of the bridge are gradually enlarged.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a bearing support for construction of cast-in-place bridge superstructure, simple structure, reasonable in design has sufficient security and stability.
The utility model discloses a realize through following technical scheme:
a bearing support for upper structure construction of a cast-in-place bridge comprises reinforcing steel bars, first double I-beams, hoops and second double I-beams, wherein the hoops and the second double I-beams are arranged in pairs;
in the paired hoops, each hoop comprises a hoop main body and 2 hoop bearings, the 2 hoop bearings are respectively positioned on two sides of the hoop main body, the paired hoops are fastened and fixed on the outer wall of a pier of the cast-in-place bridge, and the 2 hoop bearings are symmetrically arranged around the outer wall of the pier;
the first double-I-shaped steel is arranged on the upper surface of the cover beam and is vertical to the length direction of the cover beam, the two steel bars are parallel to the pier stud respectively and fixedly penetrate through the hoop bearing and the first double-I-shaped steel, the second double-I-shaped steel is fixed on the upper surface of the hoop bearing, and the second double-I-shaped steel is arranged in the longitudinal direction of the cast-in-place bridge.
Preferably, the pair of hoops is located between the tie beam and the capping beam.
Preferably, the steel bar is finish-rolled deformed steel bar.
Preferably, the hoop support comprises two horizontal sections with square structures and a vertical section with a square structure, and the upper end and the lower end of the same side of the vertical section are respectively connected with the horizontal sections.
Furthermore, the anchor ear main body is fastened on the outer wall of the pier stud of the cast-in-place bridge and then fixed through high-strength bolts penetrating through the anchor ear and bearing the vertical section.
Preferably, the upper surface and the lower surface of the steel bar in contact with the hoop bearing are respectively provided with a first finish rolling deformed steel bar anchor nut and a second finish rolling deformed steel bar anchor nut, and the upper surface of the steel bar in contact with the first double I-shaped steel is provided with a third finish rolling deformed steel bar anchor nut.
Further, the upper surface of staple bolt bearing is provided with the second anchor backing plate, and first finish rolling screw-thread steel anchor nut is installed to the upper end of second anchor backing plate, and the lower surface of staple bolt bearing is provided with the third anchor backing plate, and second finish rolling screw-thread steel anchor nut is installed to the lower extreme of third anchor backing plate, and the upper surface of first double I-steel is provided with first anchor backing plate, and the upper surface of first anchor backing plate is provided with third finish rolling screw-thread steel anchor nut.
Preferably, a rubber pad is arranged between the hoops arranged in pairs and the outer wall of the pier stud.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a bearing support, through set up two staple bolts on the bridge pier stud, set up first pair I-steel on the bent cap, and be connected staple bolt and first pair I-steel through the reinforcing bar, can transmit the very big part load weight that is transmitted by the staple bolt to the bent cap through the reinforcing bar, unlikely to because the frictional force between staple bolt and the pier stud is not enough and can't bear superstructure dead weight and other loads, because the rigidity of bridge pier stud and bent cap is enough big, its anti deformability is very strong, self can not destroy, guaranteed also that the staple bolt can not take place to slide and warp simultaneously, guaranteed that the girder has better linear shape after the construction is accomplished; when the construction is carried out on the bridge assembled by the bearing support, the requirement on the bearing capacity of the foundation is low, the anchor ear and the support are all located on the ground and can be adjusted in height, the bridge with the requirement on clearance or navigation is very favorable, when the bridge is applied to a high pier bridge spanning canyons in mountainous areas, a large number of steel pipe supports can be saved, economic benefits are obtained, unstable accidents possibly caused by overhigh support can be avoided, the accidents are the most easily occurring accidents and the extremely strong destructive power accidents in the steel structure construction, and the safety of machinery and constructors in the construction process is ensured.
Drawings
Figure 1 is the utility model discloses a vertical bridge of cast-in-place bridge is to the front view.
Figure 2 is the utility model discloses a cast-in-place bridge's horizontal bridge is to the front view.
Fig. 3 is a front view of the installation mode of the hoop of the present invention.
Fig. 4 is a three-dimensional view of the detailed structure of the hoop of the present invention.
Fig. 5 is a three-dimensional view of the detailed structure of the i-steel above the bent cap of the present invention.
In the figure: 1-reinforcing steel bar, 2-first double I-steel, 3-bent cap, 4-coil buckle type support, 5-hoop, 6-pier stud, 7-tie beam, 8-bailey beam, 9-second double I-steel, 10-first anchor backing plate, 11-second anchor backing plate, 12-third anchor backing plate, 13-high-strength bolt, 14-hoop bearing, 15-first finish rolling deformed steel bar anchor nut, 16-second finish rolling deformed steel bar anchor nut, 17-third finish rolling deformed steel bar anchor nut, 18-distribution beam and 19-hoop main body.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings, which are provided for purposes of illustration and not limitation.
The bridge generally has a plurality of spans, and fig. 1 only shows one span, so fig. 1 and 3 do not strictly correspond to the hoop 5 on the second double i-steel 9. Referring to fig. 1, fig. 3 and fig. 5, the utility model discloses a reinforcing bar 1, first pair of i-steel 2, staple bolt 5 and the two i-steel 9 of second that set up in pairs, each first pair of i-steel 2 and two reinforcing bars 1, a pair of staple bolt 5 and the two i-steel 9 of second that set up in pairs form the bearing unit, and in this embodiment, reinforcing bar 1 is the screw-thread steel, specifically is finish rolling screw-thread steel.
And the anchor ear 5 is arranged below the bridge capping beam 3 and above the tie beam 7. A first double I-beam 2 is erected on the upper surface of the bent cap 3, and the first double I-beam 2 is perpendicular to the length direction of the bent cap 3. The upper surface of the first double I-shaped steel 2 is provided with a first anchor backing plate 10, and the upper surface and the lower surface of an anchor ear support 14 of the anchor ear 5 are respectively provided with a second anchor backing plate 11 and a third anchor backing plate 12. The hoop 5 and the first double-H-shaped steel 2 are sequentially connected through finish-rolled deformed steel bars by a first anchor nut 15, a second anchor nut 16 and a third anchor nut 17, and the two finish-rolled deformed steel bars are respectively parallel to the pier stud 6 and fixedly penetrate through a hoop bearing 14 of the hoop 5 and the first double-H-shaped steel 2.
The first double i-beam 2 is a double 16 i-beam in this embodiment, the double 16 i-beam provides a working platform for connecting the hoop 5 and the capping beam 3, and the finish-rolled deformed steel bar is a phi 32 finish-rolled deformed steel bar in this embodiment.
Referring to fig. 1 and 2, two hoops 5 of the same pier are provided with second double-H-shaped steel 9 parallel to a bridge pier stud 6, and the second double-H-shaped steel 9 is welded with the hoops 5. The Bailey beams 8 are arranged on the second double I-beams 9, the second double I-beams 9 are arranged along the longitudinal bridge direction, the Bailey beams 8 are perpendicular to the second double I-beams 9, and the Bailey beams 8 are arranged at certain intervals in the transverse bridge direction. The distributing beams 18 are erected on the Bailey beams 8, the distributing beams 18 are perpendicular to the Bailey beams 8, and the distributing beams 18 are arranged at certain intervals in the longitudinal bridge direction. The disc buckle type supports 4 are erected on the distribution beams 18, the distribution beams are made of double H-shaped steel, the distance between the H-shaped steel is determined by the disc buckle type supports 4 supported by the H-shaped steel, the transverse bridge direction step distance of the disc buckle type supports is 90cm, and the longitudinal bridge direction step distance of the disc buckle type supports is 30 cm. The distribution beams are therefore spaced 90cm apart.
The second double i-beam 9 is a double 63a i-beam in the embodiment, the length is 9m, the bailey beam 8 is a double-layer reinforced bailey beam with the height of 3m, and eleven bailey beams are arranged in the transverse bridge direction according to the calculation requirement. The maximum distance between the transverse bridge-direction Bailey beams is 1.1m, the minimum distance is 0.6m, the distance between the Bailey beams 8 is mainly determined according to the weight of the bearing upper box beam, the weight near a web plate is larger, the distance between the Bailey beams 8 is small, the weight of a hollow part in the middle of the box beam is small, and the distance between the Bailey beams 8 is properly increased.
The double I-beam comprises double 16I-beams and double 63a I-beams, wherein 2 identical I-beams are transversely jointed and welded together, and the double 16I-beams and the double 63a I-beams are only different in specification.
Referring to fig. 4, because common pier stud 6 is the cylinder, so every staple bolt 5 comprises staple bolt main part 19 and staple bolt bearing 14 that two semicircles are annular, and 2 staple bolt bearings 14 are located the both sides of staple bolt main part 19 respectively, and staple bolt 5 lock joint that sets up in pairs is fixed the setting after on the outer wall of the pier stud 6 of cast-in-place bridge, and 2 staple bolt bearings 14 are about the outer wall symmetry setting of pier stud 6. Specifically, the hoop bearing 14 comprises two horizontal sections with the same square structure and a vertical section with the same square structure, the upper end and the lower end of the same side of the vertical section are respectively connected with the horizontal sections, and the hoop main body 19 is fixedly arranged through the high-strength bolt 13 penetrating through the vertical section of the hoop bearing 14 after being buckled on the outer wall of the pier stud 6 of the cast-in-place bridge.
The two anchor ear main bodies 19 are reserved with bolt holes and finish-rolled deformed steel bar hole channels, the two anchor ear main bodies 19 are connected through high-strength bolts 13, and a second anchor backing plate 11 and a third anchor backing plate 12 are arranged on the anchor ear 5, and form an anchoring system together with a first finish-rolled deformed steel bar anchor nut 15 and a second finish-rolled deformed steel bar anchor nut 16 for anchoring the deformed steel bar 1. Specifically, a first finish-rolled deformed steel bar anchor nut 15 and a second finish-rolled deformed steel bar anchor nut 16 are respectively installed on the upper surface and the lower surface of the steel bar 1, which are in contact with the hoop support 14, and a third finish-rolled deformed steel bar anchor nut 17 is installed on the upper surface of the steel bar 1, which is in contact with the first double i-beam 2; the upper surface of staple bolt bearing 14 is provided with second anchor backing plate 11, and first finish rolling screw-thread steel anchor nut 15 is installed to the upper end of second anchor backing plate 11, and the lower surface of staple bolt bearing 14 is provided with third anchor backing plate 12, and second finish rolling screw-thread steel anchor nut 16 is installed to the lower extreme of third anchor backing plate 12, and the upper surface of first double I-steel 2 is provided with first anchor backing plate 10, and the upper surface of first anchor backing plate 10 is provided with third finish rolling screw-thread steel anchor nut 17.
In an embodiment of the present invention, the hoop 5 is made of a rolled Q235 steel plate with a thickness of 20 mm. The diameter of the pier is 1.8m, the diameter of the hoop 5 is 1.8m, and a 0.2cm high-friction rubber pad is arranged between the hoop 5 and the pier to increase the friction force between the hoop and the pier. Two anchor ears 5 are arranged on the same double-column pier, and first double I-shaped steel 2 serving as a cross beam is arranged on each of the two anchor ears 5 in the transverse bridge direction and used for bearing. And (3) erecting a Bailey beam 8 above two second double I-shaped steel beams 9 serving as bearing beams in the longitudinal bridge direction, and erecting a distribution beam 18.
The hoop 5 is provided with four between one-span bridges, and the transverse bridge-direction cross beams are provided with two between one-span bridges. The Bailey beam 8, the distribution beam 18 and the disc buckle type support 4 are set as required after being calculated according to the width of the bridge and the weight of the main beam.
Although the present invention has been described in connection with the appended drawings, it is not intended to limit the invention to the particular embodiments described above, which are intended to be illustrative, instructive, and not restrictive. Those skilled in the art can make various modifications without departing from the spirit and principles of the present invention, which are intended to be encompassed by the present invention.
Claims (8)
1. A bearing support for the upper structure construction of a cast-in-place bridge is characterized by comprising reinforcing steel bars (1), first double I-beams (2), hoops (5) and second double I-beams (9), wherein the hoops (5) and the second double I-beams (9) are arranged in pairs, and each first double I-beam (2) and two reinforcing steel bars (1), one pair of hoops (5) and two second double I-beams (9) form a bearing unit;
in the hoops (5) arranged in pairs, each hoop (5) comprises a hoop main body (19) and 2 hoop supports (14), the 2 hoop supports (14) are respectively positioned at two sides of the hoop main body (19), the hoops (5) arranged in pairs are buckled on the outer wall of a pier column (6) of the cast-in-place bridge and then fixedly arranged, and the 2 hoop supports (14) are symmetrically arranged relative to the outer wall of the pier column (6);
the double-I-shaped steel structure is characterized in that the first double-I-shaped steel (2) is arranged on the upper surface of the cover beam (3), the first double-I-shaped steel (2) is perpendicular to the length direction of the cover beam (3), the two reinforcing steel bars (1) are respectively parallel to the pier stud (6) and fixedly penetrate through the hoop bearing (14) and the first double-I-shaped steel (2), the second double-I-shaped steel (9) is fixed on the upper surface of the hoop bearing (14), and the second double-I-shaped steel (9) is arranged in the longitudinal bridge direction through length of the cast-in-place bridge.
2. A load-bearing support for the construction of cast-in-place bridge superstructures, according to claim 1, characterized in that the hoops (5) arranged in pairs are located between the tie beams (7) and the capping beams (3).
3. The load-bearing bracket for the upper structural construction of a cast-in-place bridge according to claim 1, wherein the steel bars (1) are finish-rolled deformed steel bars.
4. The load-bearing support for the upper structural construction of a cast-in-place bridge according to claim 1, characterized in that the hoop support (14) comprises two horizontal sections of a square structure and a vertical section of a square structure, and the upper end and the lower end of the same side of the vertical section are respectively connected with the horizontal sections.
5. The load-bearing support for the upper structural construction of the cast-in-place bridge is characterized in that the hoop main body (19) is fastened on the outer wall of a pier stud (6) of the cast-in-place bridge and then fixed through a high-strength bolt (13) penetrating through a vertical section of the hoop support (14).
6. The load-bearing bracket for the upper structural construction of a cast-in-place bridge according to claim 1, wherein a first finish-rolled deformed steel bar anchor nut (15) and a second finish-rolled deformed steel bar anchor nut (16) are respectively installed on the upper surface and the lower surface of the steel bar (1) contacting with the hoop support (14), and a third finish-rolled deformed steel bar anchor nut (17) is installed on the upper surface of the steel bar (1) contacting with the first h-shaped steel (2).
7. The bearing support for the upper structure construction of the cast-in-place bridge according to claim 6, characterized in that a second anchor backing plate (11) is arranged on the upper surface of the hoop bearing (14), a first finish-rolled deformed steel bar anchor nut (15) is installed on the upper end of the second anchor backing plate (11), a third anchor backing plate (12) is arranged on the lower surface of the hoop bearing (14), a second finish-rolled deformed steel bar anchor nut (16) is installed on the lower end of the third anchor backing plate (12), a first anchor backing plate (10) is arranged on the upper surface of the first double I-section steel (2), and a third finish-rolled deformed steel bar anchor nut (17) is arranged on the upper surface of the first anchor backing plate (10).
8. The load-bearing support for the upper structural construction of the cast-in-place bridge is characterized in that rubber pads are arranged between the hoops (5) which are arranged in pairs and the outer walls of the piers (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922126075.5U CN211312231U (en) | 2019-12-02 | 2019-12-02 | A bearing support for construction of cast-in-place bridge superstructure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922126075.5U CN211312231U (en) | 2019-12-02 | 2019-12-02 | A bearing support for construction of cast-in-place bridge superstructure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211312231U true CN211312231U (en) | 2020-08-21 |
Family
ID=72054115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922126075.5U Expired - Fee Related CN211312231U (en) | 2019-12-02 | 2019-12-02 | A bearing support for construction of cast-in-place bridge superstructure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211312231U (en) |
-
2019
- 2019-12-02 CN CN201922126075.5U patent/CN211312231U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200821 Termination date: 20211202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |