CN209759998U - Rigid frame groove type beam bridge crossing shallow buried tunnel - Google Patents
Rigid frame groove type beam bridge crossing shallow buried tunnel Download PDFInfo
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- CN209759998U CN209759998U CN201920325196.XU CN201920325196U CN209759998U CN 209759998 U CN209759998 U CN 209759998U CN 201920325196 U CN201920325196 U CN 201920325196U CN 209759998 U CN209759998 U CN 209759998U
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- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 239000011513 prestressed concrete Substances 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
the utility model provides a stride across shallow rigid frame cell type girder bridge who buries tunnel, including pile foundation, bent cap and the channel beam that sets gradually from bottom to top, the pile foundation is standing in the tunnel both sides, the bent cap is located the tunnel both sides and respectively the rigid coupling in the top of the pile foundation that corresponds the side, the channel beam spanes in tunnel top and both ends respectively with the bent cap rigid coupling of tunnel both sides. The utility model provides a rigid frame groove type beam bridge crossing a shallow tunnel, which adopts a groove type beam structure, and the height of the groove type beam structure is low, so that the requirements of road design elevation and tunnel anti-floating can be simultaneously met when the shallow tunnel is crossed; the groove beam and the cover beam are rigidly connected, and a rigid frame mode is adopted without arranging a support, so that the maintenance work during operation is reduced.
Description
Technical Field
The utility model relates to a bridge field especially relates to a stride across shallow rigid frame cell type girder bridge who buries tunnel.
Background
the design of a road crossing a railway tunnel is that a bridge is generally erected at the top of the tunnel, a prefabricated small box girder structure is generally directly adopted in the prior art, as shown in attached figures 1 ~ 2, the scheme has the defects that when the girder structure is adopted, soil with a certain thickness at the top of the tunnel is usually required to be removed under the condition of determining the designed elevation of the road, when a shallow tunnel is crossed, after the soil with the certain thickness at the top of the tunnel is removed, the soil at the top of the tunnel is too thin, the anti ~ floating requirement of the tunnel cannot be met, namely the designed elevation of the road and the anti ~ floating requirement of the tunnel cannot be met at the same time, and the support of the girder structure is positioned below the ground, the maintenance workload is large, and the durability of the support can be seriously influenced if the maintenance cannot be carried out in time.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a stride across shallow rigid frame cell type girder bridge who buries tunnel aims at being used for solving the bridge girder body structure in current stride across railway tunnel and can not satisfy the big problem of road design elevation and the anti requirement of floating in tunnel and support maintenance work load simultaneously.
The utility model discloses a realize like this:
The utility model provides a stride across shallow rigid frame cell type girder bridge that buries tunnel, including pile foundation, bent cap and the channel beam that sets gradually from bottom to top, the pile foundation is standing in the tunnel both sides, the bent cap is located the tunnel both sides and respectively the rigid coupling in the top of the pile foundation that corresponds the side, the channel beam spanes in tunnel top and both ends respectively with the bent cap rigid coupling of tunnel both sides.
Furthermore, the channel beam comprises a prefabricated section and post-pouring sections located on two sides of the prefabricated section, two ends of the prefabricated section are respectively lapped on the cover beams on two sides of the tunnel and have a certain distance with the outer side edges of the cover beams, the post-pouring sections are located on the cover beams and are connected with the prefabricated section, and the prefabricated section is fixedly connected with the cover beams through the post-pouring sections.
Further, the pile foundation is a cast-in-situ bored pile.
Further, the channel beam is a single-hole prestressed concrete channel beam.
Further, the bent cap is a reinforced concrete bent cap.
Further, the distance between the bottom of the channel beam and the top of the tunnel structure is not less than 2 m.
Further, the channel beams are arranged in a plurality of channels side by side.
Furthermore, both ends of the channel beam are respectively provided with an access board in an outward extending mode, and a bracket connected with the channel beam or the cover beam is arranged below the access board.
Compared with the prior art, the utility model discloses following beneficial effect has:
The utility model provides a rigid frame groove type beam bridge crossing a shallow tunnel, which adopts a groove type beam structure, and the height of the groove type beam structure is low, so that the requirements of road design elevation and tunnel anti-floating can be simultaneously met when the shallow tunnel is crossed; the groove beam and the cover beam are rigidly connected, and a rigid frame mode is adopted without arranging a support, so that the maintenance work during operation is reduced. The utility model discloses combine ordinary channel beam and conventional rigid frame, both exert the low advantage of channel beam structure height, utilized the rigid frame to need not set up the support simultaneously, reduced the characteristics of maintenance work during the operation, this structure simple structure, the atress is clear and definite, design and construction convenience, maintenance work load is little after the operation, and is little to underbridge railway tunnel safety and operation influence, and construction cycle is short, and engineering cost is lower relatively.
drawings
FIG. 1 is an elevational view of a prior art small box girder bridge;
3 FIG. 32 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 31 3; 3
Fig. 3 is an elevation view of a rigid-framed girder bridge spanning a shallow tunnel according to the present embodiment;
Fig. 4 is a partial schematic view of a rigid-framed girder bridge spanning a shallow tunnel according to the present embodiment;
3 fig. 3 5 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 the 3 line 3 a 3- 3 a 3 in 3 fig. 3 4 3. 3
Description of reference numerals: 1-pile foundation, 2-capping beam, 3-channel beam, 31-prefabricating section, 32-post-pouring section, 4-butt strap and 5-bracket.
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 efforts belong to the protection scope of the present invention.
As shown in fig. 3 to 5, the embodiment of the present invention provides a rigid frame-trough girder bridge spanning a shallow tunnel, which comprises a pile foundation 1, a capping beam 2 and a trough girder 3 arranged in sequence from bottom to top, the pile foundation 1 is erected on two sides of the tunnel, each side is provided with at least one pile foundation 1, the capping beams 2 are also positioned on two sides of the tunnel, each side is provided with at least one capping beam 2, each capping beam 2 is fixedly connected with the top of the pile foundation 1 on the corresponding side, the top of one pile foundation 1 can be fixedly connected with one cover beam 2, the top of a plurality of pile foundations 1 can be fixedly connected with one cover beam 2, the channel beam 3 is spanned above the tunnel, two ends of the channel beam are respectively and rigidly connected with the bent caps 2 at two sides of the tunnel, a support is not arranged in the middle of the channel beam, one channel beam 3 can be arranged, or a plurality of channel beams can be arranged side by side, and one capping beam 2 may be rigidly connected to one or more channel beams 3, which may be provided as required.
The embodiment of the utility model provides a this kind of rigid frame cell type beam bridge that stridees across shallow tunnel adopts the channel type roof beam 3 structure, and channel type roof beam 3 structure is high low itself for can satisfy road design elevation and the anti-floating requirement of tunnel simultaneously when strideing across shallow tunnel; the channel beam 3 and the cover beam 2 are rigidly connected, and a rigid frame mode is adopted without arranging a support, so that the maintenance work during operation is reduced. The utility model discloses combine ordinary channel beam 3 and conventional rigid frame, both exert the advantage that 3 structure height of channel beam are low, utilized the rigid frame to need not set up the support simultaneously, reduced the characteristics of maintenance work during the operation, this structure simple structure, the atress is clear and definite, design and construction convenience, maintenance work load is little after the operation, and is little to underbridge railway tunnel safety and operation influence, construction cycle is short, and engineering cost is lower relatively.
As shown in fig. 4, the rigid connection between the channel beam 3 and the capping beam 2 is refined, the channel beam 3 includes a precast segment 31 and post-cast segments 32 located at both sides of the precast segment 31, both ends of the precast segment 31 are respectively overlapped on the capping beams 2 at both sides of the tunnel and have a certain distance with the outer edges of the capping beams 2, the post-cast segments 32 at both sides are respectively located on the capping beams 2 at both sides of the tunnel and are both connected with the precast segment 31, and the reserved steel bars of the post-cast segment 32 and the reserved steel bars of the capping beams 2 are both integrated with the post-cast segment 32, so that the channel beam 3 and the capping beams 2 are fixedly connected together through the post-cast segment 32. The post-cast section 32 and the prefabricated section 31 are both of a groove structure and are matched in shape, and the outer edge of the post-cast section 32 is just level with the outer edge of the cover beam 2, so that the structure is smoother and more orderly. During construction, the pile foundation 1 and the capping beam 2 are constructed firstly, the prefabricated section 31 of the groove beam 3 is manufactured in a beam field, post-pouring section steel bars are reserved in the capping beam 2 and the prefabricated section 31 in construction, the prefabricated section 31 of the groove beam 3 is placed on the capping beam 2 through hoisting equipment, post-pouring section 32 concrete is poured, and the groove beam 3 and the capping beam 2 are connected into a whole.
The embodiment is further refined, the pile foundation 1 is a cast-in-situ bored pile, the channel beam 3 is a single-hole prestressed concrete channel beam 3, and the capping beam 2 is a reinforced concrete capping beam 2, so that the integral structure is simple in structure, firm in fixation and convenient to construct.
Further preferably, the distance between the bottom of the channel beam 3 and the top of the tunnel structure is not less than 2m, so that the thickness of the soil covering on the top of the tunnel can be not less than 2m, and the requirement of the tunnel on anti-floating is met.
As shown in fig. 5, when the deck is wide, the channel beams 3 may be arranged in a plurality of rows side by side, and each channel beam 3 may be prefabricated separately, thereby reducing the hoisting weight.
As shown in fig. 3, it is further preferable that both ends of the channel beam 3 are respectively provided with an access board 4 extending outwards, so that the vehicle can play a role of buffering when running, and the vehicle is prevented from jumping over, the bottom of the access board 4 can be flush with the top of the cover beam 2 or higher than the top of the cover beam 2, as shown in fig. 4, a bracket 5 connected with the channel beam 3 or the cover beam 2 is arranged below the access board 4, and the access board 4 is structurally supported by the bracket 5, so that the access board 4 is more stable.
The embodiment of the utility model provides a this kind of stride across shallow rigid frame cell type girder bridge who buries tunnel is applicable to highway, urban road, town road, service lane and aircraft taxiway when shallowly burying tunnel section (mainly indicate earthing thickness not more than 2 meters) top pass through, if the high strictness of bridge structures is restricted, and require stringently to driving smoothness and travelling comfort, the condition when unable adoption conventional prefabricated box girder bridge stridees across, the haplopore prestressed concrete channel type roof beam 3 structure of adoption this embodiment is a better selection that can satisfy many-sided requirement.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a stride across shallow rigid frame cell type girder bridge who buries tunnel which characterized in that: including pile foundation, bent cap and the channel beam that sets gradually from bottom to top, the pile foundation is found in the tunnel both sides, the bent cap is located the tunnel both sides and respectively the rigid coupling in the top of the pile foundation that corresponds the side, the channel beam spanes in tunnel top and both ends respectively with the bent cap rigid coupling of tunnel both sides.
2. The rigid-frame channel-type beam bridge spanning a shallow tunnel according to claim 1, wherein: the channel beam comprises a prefabricated section and post-pouring sections located on two sides of the prefabricated section, two ends of the prefabricated section are respectively lapped on the cover beams on two sides of the tunnel and have a certain distance with the outer side edges of the cover beams, the post-pouring sections are located on the cover beams and are jointed with the prefabricated section, and the prefabricated section is fixedly connected with the cover beams through the post-pouring sections.
3. The rigid-frame channel-type beam bridge spanning a shallow tunnel according to claim 1, wherein: the pile foundation is a cast-in-situ bored pile.
4. The rigid-frame channel-type beam bridge spanning a shallow tunnel according to claim 1, wherein: the channel beam is a single-hole prestressed concrete channel beam.
5. The rigid-frame channel-type beam bridge spanning a shallow tunnel according to claim 1, wherein: the bent cap is a reinforced concrete bent cap.
6. The rigid-frame channel-type beam bridge spanning a shallow tunnel according to claim 1, wherein: the distance between the bottom of the channel beam and the top of the tunnel structure is not less than 2 m.
7. The rigid-frame channel-type beam bridge spanning a shallow tunnel according to claim 1, wherein: the channel beams are arranged in parallel.
8. The rigid-frame channel-type beam bridge spanning a shallow tunnel according to claim 1, wherein: the both ends of channel beam outwards extend respectively and are provided with the attachment strap, the attachment strap below have with the bracket that channel beam or bent cap are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920325196.XU CN209759998U (en) | 2019-03-14 | 2019-03-14 | Rigid frame groove type beam bridge crossing shallow buried tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920325196.XU CN209759998U (en) | 2019-03-14 | 2019-03-14 | Rigid frame groove type beam bridge crossing shallow buried tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209759998U true CN209759998U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920325196.XU Active CN209759998U (en) | 2019-03-14 | 2019-03-14 | Rigid frame groove type beam bridge crossing shallow buried tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109778662A (en) * | 2019-03-14 | 2019-05-21 | 中铁第四勘察设计院集团有限公司 | Across the rigid flute type beam bridge of shallow tunnel |
-
2019
- 2019-03-14 CN CN201920325196.XU patent/CN209759998U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109778662A (en) * | 2019-03-14 | 2019-05-21 | 中铁第四勘察设计院集团有限公司 | Across the rigid flute type beam bridge of shallow tunnel |
| CN109778662B (en) * | 2019-03-14 | 2024-04-02 | 中铁第四勘察设计院集团有限公司 | Rigid frame groove type beam bridge crossing shallow-buried tunnel |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430063 No. 745 Heping Avenue, Wuchang, Hubei, Wuhan Patentee after: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. Patentee after: Guangdong Railway Planning, Design and Research Institute Co.,Ltd. Address before: 430063 No. 745 Heping Avenue, Wuchang, Hubei, Wuhan Patentee before: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. Patentee before: GUANGZHOU HOLDING COMPANY OF THE CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. Address after: 430063 No. 745 Heping Avenue, Wuchang, Hubei, Wuhan Patentee after: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. Patentee after: Guangdong railway planning, design and Research Institute Co.,Ltd. Address before: 430063 No. 745 Heping Avenue, Wuchang, Hubei, Wuhan Patentee before: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. Patentee before: Guangdong Railway Planning, Design and Research Institute Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |