CN211006300U - Large-span approach bridge structure of high-intensity seismic area - Google Patents
Large-span approach bridge structure of high-intensity seismic area Download PDFInfo
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- CN211006300U CN211006300U CN201921844910.2U CN201921844910U CN211006300U CN 211006300 U CN211006300 U CN 211006300U CN 201921844910 U CN201921844910 U CN 201921844910U CN 211006300 U CN211006300 U CN 211006300U
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Abstract
The utility model discloses a large-span approach structure in high intensity ground district, including high pile pier, high pile bent frame and prestressing force T roof beam, high pile bent frame includes four high pile bent frames in the middle part of group and two sets of tip high pile bent frames, high pile pier includes pier and four pier steel-pipe piles, middle part high pile bent frame includes middle part high pile bent frame crossbeam and two middle part high pile bent frame steel-pipe piles, tip high pile bent frame includes tip high pile bent frame crossbeam and two tip high pile bent frame steel-pipe piles, the equal symmetry in high pile pier left and right sides is provided with two sets of middle part high pile bent frames and a set of tip high pile bent frame, and tip high pile bent frame adopts the support that slides for simple structure. The utility model discloses the support release that slides on the high pile bent of tip at approach structure section both ends rotates and the horizontal displacement degree of freedom, sets up the support that slides on the high pile bent of structure parting department tip promptly, and the support that slides adopts tetrafluoro slide support, makes superstructure's horizontal displacement not receive the restriction of the support shearing deformation volume of sliding itself, effectively releases seismic energy, reduces the structure atress.
Description
Technical Field
The utility model relates to a water conservancy project technical field specifically is a large-span approach bridge structure in high intensity seismic region.
Background
Coastal resources are precious and limited, the protection of coastal ecological environment is more and more popular to people in recent years, and the coastal ecological environment is influenced by the pile foundation with small span and dense density.
In seismic design, the seismic structure is typically a continuous monolithic structure of small span, especially in high intensity seismic areas. The structure has large integral rigidity and small displacement, resists the action of earthquake load by utilizing the self rigidity, but greatly increases the engineering quantity of pile foundations and upper structures in a high-intensity earthquake area, obviously increases the engineering cost, and has prominent structural stress deformation problem due to large earthquake inertia force.
Therefore, a large-span approach bridge structure of a high-intensity seismic area is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a large-span approach bridge structure in high intensity seismic region to solve the problem that provides among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a large-span approach structure of a high-intensity earthquake area comprises a high pile bent frame, a high pile bent frame and a prestressed T-beam, wherein the high pile bent frame comprises four groups of middle high pile bent frames and two groups of end high pile bent frames, the high pile bent frame comprises a bent frame and four steel pipe piles, the middle high pile bent frame comprises a middle high pile bent frame beam and two middle high pile bent frame steel pipe piles, the end high pile bent frame comprises an end high pile bent frame beam and two end high pile bent frame steel pipe piles, the left side and the right side of the high pile bent frame are symmetrically provided with two groups of middle high pile bent frames and a group of end high pile bent frame, the end high pile bent frame is positioned outside the middle high pile bent frame, the middle high pile bent frame beam and the end high pile bent frame beam are of inverted T-shaped structures, the prestressed T-beam is fixedly connected with the bent frame and the bent frame beams, and a sliding support is adopted for a simple support structure between the prestressed T-beam and the end high pile bent frame, the utility model discloses a high pile bent frame of tip crossbeam, including tip high pile bent frame crossbeam, both sides all are provided with the support that slides, steel sheet and support lower steel sheet on the support are fixedly connected with respectively to both ends about the support that slides, are connected with the high pile bent frame of tip the pre-buried steel sheet of prestressing force T roof beam lower extreme through anchor reinforcing bar fixedly connected with, the steel sheet passes through anchor bolt fixed connection in pre-buried steel sheet lower extreme on the support, the steel sheet passes through support bed stone and anchor bolt fixed connection in tip high pile bent frame crossbeam upper end under the support.
Preferably, the span of the prestressed T-beam is 15m-40 m.
Preferably, four pier steel pipe piles are respectively located at four corners of the lower end of the pier, two middle high-pile bent frame steel pipe piles are respectively located on the front side and the rear side of the lower end of a middle high-pile bent frame beam, and two end high-pile bent frame steel pipe piles are respectively located on the front side and the rear side of the lower end of an end high-pile bent frame beam.
Preferably, the sliding support is a tetrafluoro sliding plate support.
Preferably, a dust cover is arranged outside the sliding support.
Preferably, the bridge deck cast-in-place layer is poured on the upper end faces of the high pile abutment, the prestressed T beam and the middle high pile bent.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model takes the high pile pier as the center, two groups of middle high pile bent frames and one group of end high pile bent frame are symmetrically arranged on two sides, and form an integral structure section with the upper prestressed T-beam, under the action of earthquake load, the integral structure is unified and coordinates the stress; the high pile pier platform with higher rigidity is arranged in the middle of the structure section, so that the structure displacement is well controlled; the structure part enters plastic deformation, but does not reach the destruction condition, better adapts to the earthquake action characteristic, and is economical and reasonable.
2. The utility model discloses the support release that slides on the high pile bent of tip at approach structure section both ends rotates and the horizontal displacement degree of freedom, sets up the support that slides on the high pile bent of structure parting department tip promptly, and the support that slides adopts tetrafluoro slide support, makes superstructure's horizontal displacement not receive the restriction of the support shearing deformation volume of sliding itself, effectively releases seismic energy, reduces the structure atress.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the high pier table of the present invention;
FIG. 3 is a schematic view of the middle high-rise bent frame structure of the present invention;
FIG. 4 is the schematic view of the structure of the high-pile bent at the end of the utility model
Fig. 5 is a schematic view of the longitudinal section structure of the connection mode of the end high pile bent frame and the prestressed T-beam of the present invention;
fig. 6 is the utility model discloses tip high pile bent frame and prestressing force T roof beam connected mode transverse arrangement structure sketch map.
In the figure: 1 high pile pier, 101 pier, 102 pier steel pipe pile, 2 prestressing force T roof beam, 3 middle part high pile bent frames, 301 middle part high pile bent frame crossbeam, 302 middle part high pile bent frame steel pipe pile, 4 tip high pile bent frames, 401 tip high pile bent frame crossbeam, 402 tip high pile bent frame steel pipe pile, 5 support that slides, 6 support upper steel plates, 7 support lower steel plates, 8 anchor reinforcing bars, 9 pre-buried steel plates, 10 anchor bolts, 11 support base stone, 12 dust covers, 13 bridge floor cast-in-place layers.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a large-span approach structure of a high-intensity earthquake area comprises a high pile abutment 1, a high pile bent frame and a prestressed T-beam 2, wherein the high pile bent frame comprises four groups of middle high pile bent frames 3 and two groups of end high pile bent frames 4, the high pile abutment 1 comprises an abutment 101 and four abutment steel pipe piles 102, the middle high pile bent frame 3 comprises a middle high pile bent frame beam 301 and two middle high pile bent frame steel pipe piles 302, the end high pile bent frame 4 comprises an end high pile bent frame beam 401 and two end high pile bent frame steel pipe piles 402, the two groups of middle high pile bent frames 3 and one group of end high pile bent frames 4 are symmetrically arranged on the left side and the right side of the high pile abutment 1, the end high pile bent frame beams 4 are positioned outside the middle high pile bent frame 3, the abutment 101, the middle high pile bent frame beam 301 and the end high pile bent frame beam 401 are of inverted T-shaped structures, and the prestressed T-beam 2 is fixedly connected with the abutment 101 and the middle high pile bent frame beam 301, adopt the support 5 that slides for simple structure between prestressing force T roof beam 2 and tip high pile bent frame crossbeam 401, tip high pile bent frame crossbeam 401 upper end left and right sides all is provided with the support 5 that slides, the support 5 upper and lower both ends respectively fixedly connected with support upper steel sheet 6 and support lower steel sheet 7 are connected with tip high pile bent frame 4 prestressing force T roof beam 2 lower extreme passes through anchor bar 8 fixedly connected with pre-buried steel sheet 9, steel sheet 6 passes through anchor bolt 10 fixed connection in pre-buried steel sheet 9 lower extreme on the support, steel sheet 7 passes through support bed stone 11 and anchor bolt 10 fixed connection in tip high pile bent frame crossbeam 401 upper end under the support.
Specifically, the span of the prestressed T-beam 3 is 30m, and the total length of the approach bridge structure section is 180 m.
Specifically, four pier steel pipe piles 102 are respectively located at four corners of the lower end of the pier 101, two middle high-pile bent frame steel pipe piles 302 are respectively located on the front side and the rear side of the lower end of the middle high-pile bent frame cross beam 301, and two end high-pile bent frame steel pipe piles 402 are respectively located on the front side and the rear side of the lower end of the end high-pile bent frame cross beam 401.
Specifically, the sliding support 5 is a tetrafluoro sliding plate support.
Specifically, a dust cover 12 is arranged outside the sliding support 5.
Specifically, a bridge deck cast-in-place layer 13 is poured on the upper end faces of the high pile abutment 1, the prestressed T beam 2 and the middle high pile bent frame 3.
Specifically, when the device is used, the high pile pier table 1 is taken as the center, two groups of middle high pile bent frames 3 and one group of end high pile bent frame 4 are symmetrically arranged on two sides, and form an integral structure section with the upper prestressed T-beam 2, and under the action of earthquake load, the integral structure uniformly coordinates stress; the high pile abutment 1 with high rigidity is arranged in the middle of the structural section, so that the structural displacement is well controlled; the structure part enters plastic deformation, but does not reach the destruction condition, better adapts to the earthquake action characteristic, and is economical and reasonable. The support 5 that slides on the high pile bent 4 of tip at approach bridge structure section both ends releases rotation and horizontal displacement degree of freedom, sets up the support 5 that slides on the high pile bent 4 of structure parting department tip promptly, and the support 5 that slides adopts the tetrafluoro slide support, makes superstructure's horizontal displacement not receive the restriction of the support 5 of sliding this body shear deformation volume, effectively releases seismic energy, reduces the structure atress.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a large-span approach bridge structure in high intensity seismic region, includes high stake pier (1), high stake framed bent (3, 4) and prestressing force T roof beam (2), its characterized in that: the high pile bent frame comprises four groups of middle high pile bent frames (3) and two groups of end high pile bent frames (4), the high pile abutment (1) comprises an abutment (101) and four abutment steel pipe piles (102), the middle high pile bent frame (3) comprises a middle high pile bent frame beam (301) and two middle high pile bent frame steel pipe piles (302), the end high pile bent frame (4) comprises an end high pile bent frame beam (401) and two end high pile bent frame steel pipe piles (402), the two groups of middle high pile bent frames (3) and one group of end high pile bent frames (4) are symmetrically arranged on the left side and the right side of the high pile bent frame (1), the end high pile bent frame (4) is positioned on the outer side of the middle high pile bent frame (3), the abutment (101), the middle high pile bent frame beam (301) and the end high pile bent frame beam (401) are of inverted T-shaped structures, and the prestress T beam (2) is fixedly connected with the abutment (101) and the middle high bent frame steel pipe piles (301), support (5) of sliding are adopted for simple structure between prestressing force T roof beam (2) and tip high pile bent frame crossbeam (401), the high pile bent frame crossbeam of tip (401) upper end left and right sides all is provided with support (5) of sliding, steel sheet (6) and support lower steel sheet (7) on the support fixedly connected with respectively in both ends about support (5) slide, be connected with tip high pile bent frame (4) prestressing force T roof beam (2) lower extreme passes through anchor reinforcing bar (8) fixedly connected with pre-buried steel sheet (9), steel sheet (6) pass through anchor bolt (10) fixed connection in pre-buried steel sheet (9) lower extreme on the support, steel sheet (7) pass through support base stone (11) and anchor bolt (10) fixed connection in tip high pile bent frame crossbeam (401) upper end under the support.
2. The large-span approach bridge structure of a high-intensity seismic region according to claim 1, wherein: the span of the prestressed T-shaped beam (2) is 15-40 m.
3. The large-span approach bridge structure of a high-intensity seismic region according to claim 1, wherein: the four pier steel pipe piles (102) are respectively located at four corners of the lower end of the pier (101), the two middle high-pile bent frame steel pipe piles (302) are respectively located on the front side and the rear side of the lower end of a middle high-pile bent frame cross beam (301), and the two end high-pile bent frame steel pipe piles (402) are respectively located on the front side and the rear side of the lower end of an end high-pile bent frame cross beam (401).
4. The large-span approach bridge structure of a high-intensity seismic region according to claim 1, wherein: the sliding support (5) is a tetrafluoro sliding plate support.
5. The large-span approach bridge structure of a high-intensity seismic region according to claim 1, wherein: and a dust cover (12) is arranged on the outer side of the sliding support (5).
6. The large-span approach bridge structure of a high-intensity seismic region according to claim 1, wherein: and a bridge deck cast-in-place layer (13) is poured on the upper end surfaces of the high pile abutments (1), the prestressed T-beams (2) and the middle high pile bent frames (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921844910.2U CN211006300U (en) | 2019-10-30 | 2019-10-30 | Large-span approach bridge structure of high-intensity seismic area |
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| CN201921844910.2U CN211006300U (en) | 2019-10-30 | 2019-10-30 | Large-span approach bridge structure of high-intensity seismic area |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931058A (en) * | 2021-12-01 | 2022-01-14 | 浙江数智交院科技股份有限公司 | Integral seamless long connecting structure for bridge |
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2019
- 2019-10-30 CN CN201921844910.2U patent/CN211006300U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931058A (en) * | 2021-12-01 | 2022-01-14 | 浙江数智交院科技股份有限公司 | Integral seamless long connecting structure for bridge |
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