CN111809471A - Roadbed protection thrust structure at outlet end of pushing frame bridge and construction process thereof - Google Patents
Roadbed protection thrust structure at outlet end of pushing frame bridge and construction process thereof Download PDFInfo
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- CN111809471A CN111809471A CN202010715840.1A CN202010715840A CN111809471A CN 111809471 A CN111809471 A CN 111809471A CN 202010715840 A CN202010715840 A CN 202010715840A CN 111809471 A CN111809471 A CN 111809471A
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 40
- 230000002787 reinforcement Effects 0.000 claims abstract description 6
- 238000005056 compaction Methods 0.000 claims abstract description 4
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims 2
- 238000004891 communication Methods 0.000 claims 1
- 238000005336 cracking Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a roadbed protective thrust structure at the outlet end of a pushing frame bridge and a construction process thereof, wherein the construction process comprises the following steps: a. grouting reinforcement is carried out on the shoulder of the highway at the outlet end of the pushing frame bridge by adopting a small guide pipe; b. two groups of first protection piles are constructed in the vertical direction, and one group of second protection piles are constructed in the vertical direction; c. arranging a crown beam on the pile top of each group of first protection piles; d. arranging a thrust beam, wherein two ends of the thrust beam are respectively connected with the crown beam corresponding to each group of first protective piles; e. pouring a connecting beam at the pile top of the second protective pile, and pouring a cross brace between the thrust beam and the pile top of each second protective pile, wherein the cross brace is also connected with the connecting beam; f. and performing backfill construction and compaction at the outlet end of the pushing frame bridge. The roadbed protective thrust structure at the outlet end of the pushing frame bridge and the construction process thereof aim to solve the technical problem of cracking of the high-speed roadbed pavement in the pushing frame bridge engineering in the prior art.
Description
Technical Field
The invention belongs to the field of bridges, and particularly relates to a roadbed protective thrust structure at the outlet end of a pushing frame bridge and a construction process thereof.
Background
In some domestic pushing frame bridge projects, the phenomena of pavement and roadbed cracking, tearing, collapse, transverse movement and the like occur. When the frame channel advance support shield is about to eject out of the exit side of the highway subgrade, the highway subgrade bears huge ejection force, and the highway subgrade is weakest at the moment. The reason for this analysis is mainly because the control on the exit side of the highway base is not made in place, so that the road surface of the highway base is damaged. This is also the central importance of the whole process. Reasonable, advanced and safe protective measures are taken to ensure that the influence of the jacking support shield on the cracking of the roadbed is reduced when the jacking support shield jacks through the high-speed roadbed.
Disclosure of Invention
Technical problem to be solved
Based on the structure, the invention provides a push frame bridge outlet end roadbed protection thrust structure and a construction process thereof, and the push frame bridge outlet end roadbed protection thrust structure and the construction process thereof aim to solve the technical problem of high-speed roadbed pavement cracking in the push frame bridge engineering in the prior art.
(II) technical scheme
In order to solve the technical problem, the invention provides a construction process of a roadbed protective thrust structure at the outlet end of a pushing frame bridge, which comprises the following steps:
a. grouting reinforcement is carried out on the shoulder of the highway at the outlet end of the pushing frame bridge by adopting small guide pipes, wherein the small guide pipes comprise a group of vertical pipes arranged along the vertical direction and a group of inclined pipes crossed with the vertical direction;
b. two groups of first protection piles are constructed in the vertical direction, a group of second protection piles are constructed in the vertical direction, the first protection piles are closer to the road shoulders than the second protection piles, and the group of second protection piles are located between the two groups of first protection piles in the extending direction of the expressway;
c. arranging a crown beam on the pile top of each group of first protection piles;
d. arranging a thrust beam, wherein two ends of the thrust beam are respectively connected with the crown beam corresponding to each group of first protective piles;
e. pouring a connecting beam at the pile top of the second protective pile, and pouring a cross brace between the thrust beam and the pile top of each second protective pile, wherein the cross brace is also connected with the connecting beam;
f. and performing backfill construction and compaction at the outlet end of the pushing frame bridge.
Preferably, in said step d, the elevation of the thrust beam is controlled to control the distance of the vertical position of the thrust beam from the top plate of the passageway.
Preferably, in the step e, the level of the bottom surface of the cross brace is not lower than that of the bottom surface of the thrust beam.
Preferably, in the step b, the distance from the second fender pile to the frame bridge outlet is greater than the length of the pushing equipment after the frame bridge is pushed in place.
Preferably, in the step f, the backfill height is kept level with the highway surface.
In addition, the invention provides a push frame bridge outlet end roadbed protection thrust structure, wherein the push frame bridge outlet end roadbed protection thrust structure is obtained by the construction process of the push frame bridge outlet end roadbed protection thrust structure.
In addition, the invention provides a pushing frame bridge outlet end roadbed protection thrust structure, wherein the pushing frame bridge outlet end roadbed protection thrust structure comprises two groups of first protection piles arranged along the vertical direction and a group of second protection piles arranged along the vertical direction, the first protection piles are closer to a road shoulder of a pushing frame bridge outlet end highway than the second protection piles, the group of second protection piles are located between the two groups of first protection piles along the extending direction of the highway, a crown beam is arranged on the pile top of each group of first protection piles, a thrust beam is connected between the crown beams corresponding to the two groups of first protection piles, a connection beam is arranged on the pile top of each second protection pile, and a cross brace is connected between the thrust beam and the pile top of each second protection pile and is also connected with the connection beam.
(III) advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
the invention provides reasonable, advanced and safe protection measures for the outlet end of the pushing frame bridge mainly by designing components such as the thrust beam, the crown beam, the guard pile, the cross brace, the connecting beam and the like.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 is a schematic elevation view of a roadbed protective thrust structure at an outlet end of a pushing frame bridge according to an embodiment of the invention;
fig. 2 is a schematic plan view of a roadbed protective thrust structure at an outlet end of a pushing frame bridge according to an embodiment of the invention;
FIG. 3 is a schematic side view of a push frame bridge exit end roadbed protective thrust structure according to an embodiment of the invention;
fig. 4 is a large drawing of the small duct grouting reinforcement according to the embodiment of the invention.
Description of reference numerals:
1-small guide pipe, 2-first fender pile, 3-second fender pile, 4-crown beam, 5-thrust beam, 6-connection beam, 7-cross brace, 8-backfill line and 9-high speed roadbed.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; the two elements may be mechanically or electrically connected, directly or indirectly connected through an intermediate medium, or connected through the inside of the two elements, or "in transmission connection", that is, connected in a power manner through various suitable manners such as belt transmission, gear transmission, or sprocket transmission. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the invention provides a construction process of a roadbed protective thrust structure at an outlet end of a pushing frame bridge, which comprises the following steps:
a. grouting reinforcement is carried out on the shoulder of the highway at the outlet end of the pushing frame bridge by adopting a small guide pipe 1, the small guide pipe 1 comprises a group of vertical pipes arranged along the vertical direction and a group of inclined pipes crossed with the vertical direction, the area of a reinforcement area is ensured as much as possible, and the highway at the inlet and outlet end of the pushing frame bridge is ensured not to crack and generate overlarge horizontal displacement;
b. two groups of first fender piles 2 are implemented in the vertical direction (for example, fig. 2 shows that the number of each group of first fender piles 2 is 6), and one group of second fender piles 3 are implemented in the vertical direction (for example, fig. 2 shows that the number of each group of second fender piles 3 is 5), the first fender piles 2 are closer to the road shoulder than the second fender piles 3, and the group of second fender piles 3 are located between the two groups of first fender piles 2 along the extension direction S of the expressway;
c. arranging a crown beam 4 on the top of each group of first protection piles 2;
d. arranging a thrust beam 5, wherein two ends of the thrust beam 5 are respectively connected with the crown beam 4 corresponding to each group of first protective piles 2;
e. casting a connecting beam 6 at the pile top of the second protective pile 3, and casting a cross brace 7 between the thrust beam 5 and the pile top of each second protective pile 3, wherein the cross brace 7 is also connected with the connecting beam 6;
f. and performing backfill construction and compaction at the outlet end of the pushing frame bridge to avoid transverse movement and cracking of the highway pavement at the top inlet and outlet.
According to the preferred embodiment of the invention, in the step d, the elevation of the thrust beam 5 is controlled to control the distance between the vertical position of the thrust beam 5 and the top plate of the passageway, so that the vertical position of the thrust beam 5 is prevented from being too close to the top plate of the passageway, and the thrust beam 5 is prevented from blocking the jacking of the passageway in the jacking process. In step e, the bottom surface elevation of the cross brace 7 is not lower than that of the thrust beam 5, so that the cross brace 7 is prevented from blocking the thrust equipment. In step b, the distance from the second fender pile 3 to the frame bridge outlet is made to be larger than the length of the pushing equipment after the frame bridge is pushed in place. In step f, the height of the backfill soil (the backfill line 8) is kept to be level with the high-speed road surface (namely the road surface corresponding to the high-speed roadbed 9), and the backfill soil is kept to be level as much as possible if the operation difficulty is high.
In addition, the invention provides a roadbed protective thrust structure at the outlet end of the pushing frame bridge, which is obtained by the construction process of the roadbed protective thrust structure at the outlet end of the pushing frame bridge.
Certainly, in order to protect the structure shape more clearly, the invention further provides a roadbed protective thrust structure at the outlet end of the pushing frame bridge, the roadbed protective thrust structure at the outlet end of the pushing frame bridge comprises two groups of first protective piles 2 arranged along the vertical direction and a group of second protective piles 3 arranged along the vertical direction, the first protective piles 2 are closer to the road shoulders of the highway at the outlet end of the pushing frame bridge than the second protective piles 3, the group of second protective piles 3 are located between the two groups of first protective piles 2 along the extending direction of the highway, the pile top of each group of first protective piles 2 is provided with a crown beam 4, a thrust beam 5 is connected between the crown beams 4 corresponding to the two groups of first protective piles 2, the pile top of the second protective piles 3 is provided with a connecting beam 6, a cross brace 7 is connected between the thrust beam 5 and the pile top of each second protective pile 3, and the cross brace 7 is further connected with the connecting beam 6.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (7)
1. The utility model provides a construction technology of top push frame bridge exit end road bed protection thrust structure which characterized in that, construction technology includes the step:
a. grouting reinforcement is carried out on the shoulder of the highway at the outlet end of the pushing frame bridge by adopting small guide pipes, wherein the small guide pipes comprise a group of vertical pipes arranged along the vertical direction and a group of inclined pipes crossed with the vertical direction;
b. two groups of first protection piles are constructed in the vertical direction, a group of second protection piles are constructed in the vertical direction, the first protection piles are closer to the road shoulders than the second protection piles, and the group of second protection piles are located between the two groups of first protection piles in the extending direction of the expressway;
c. arranging a crown beam on the pile top of each group of first protection piles;
d. arranging a thrust beam, wherein two ends of the thrust beam are respectively connected with the crown beam corresponding to each group of first protective piles;
e. pouring a connecting beam at the pile top of the second protective pile, and pouring a cross brace between the thrust beam and the pile top of each second protective pile, wherein the cross brace is also connected with the connecting beam;
f. and performing backfill construction and compaction at the outlet end of the pushing frame bridge.
2. The construction process for the outlet end roadbed protective thrust structure of the push frame bridge according to claim 1, wherein in the step d, the elevation of the thrust beam is controlled to control the distance between the vertical position of the thrust beam and the channel top plate.
3. The construction process for the outlet end roadbed protective thrust structure of the push frame bridge according to claim 1, wherein in the step e, the bottom surface elevation of the cross brace is not lower than the bottom surface elevation of the thrust beam.
4. The construction process of the roadbed protective thrust structure at the outlet end of the pushing frame bridge as claimed in claim 1, wherein in the step b, the distance between the second protective pile and the frame bridge outlet is greater than the length of pushing equipment after the frame bridge is pushed in place.
5. The construction process of the outlet end roadbed protective thrust structure of the incremental launching frame bridge as claimed in claim 1, wherein in the step f, the backfill soil is kept level with the highway surface.
6. A push frame bridge exit end roadbed protection thrust structure is characterized in that the push frame bridge exit end roadbed protection thrust structure is obtained by the construction process of the push frame bridge exit end roadbed protection thrust structure according to any one of claims 1 to 5.
7. The utility model provides a top pushes away frame bridge exit end road bed protection thrust structure, a serial communication port, top pushes away frame bridge exit end road bed protection thrust structure includes along two sets of first fender piles that vertical direction set up and along a set of second fender pile that vertical direction set up, first fender pile compares the second fender pile is close to the road shoulder that top pushes away frame bridge exit end highway, a set of second fender pile is located along highway's extending direction between two sets of first fender piles, the pile bolck of each first fender pile of group is provided with guan liang, is connected with the thrust beam between the guanliang that two sets of first fender piles correspond, the pile bolck of second fender pile is provided with the tie beam, be connected with the stull between the pile bolck of thrust beam and each second fender pile, the stull is still connected the tie beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010715840.1A CN111809471B (en) | 2020-07-23 | 2020-07-23 | Pushing frame bridge outlet end roadbed protection thrust structure and construction process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010715840.1A CN111809471B (en) | 2020-07-23 | 2020-07-23 | Pushing frame bridge outlet end roadbed protection thrust structure and construction process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111809471A true CN111809471A (en) | 2020-10-23 |
| CN111809471B CN111809471B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010715840.1A Active CN111809471B (en) | 2020-07-23 | 2020-07-23 | Pushing frame bridge outlet end roadbed protection thrust structure and construction process thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256682A (en) * | 2015-09-09 | 2016-01-20 | 沈阳铁道勘察设计院有限公司 | Pile buried-type lattice frame used for protecting high roadbed and construction method |
| CN106968139A (en) * | 2017-03-09 | 2017-07-21 | 中铁十九局集团有限公司 | Construction method for railway roadbed support in jacking process of underpass railway jacking frame bridge |
| CN111021415A (en) * | 2020-01-06 | 2020-04-17 | 山东济铁工程建设集团有限公司 | Construction structure and method for transition beam of railway underpass type frame bridge |
| CN111139721A (en) * | 2020-01-16 | 2020-05-12 | 中铁第五勘察设计院集团有限公司 | Frame bridge penetrating existing railway bridge downwards and construction method thereof |
| CN212452141U (en) * | 2020-07-23 | 2021-02-02 | 中国建筑第五工程局有限公司 | Pushing frame bridge exit end roadbed protection thrust structure |
-
2020
- 2020-07-23 CN CN202010715840.1A patent/CN111809471B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256682A (en) * | 2015-09-09 | 2016-01-20 | 沈阳铁道勘察设计院有限公司 | Pile buried-type lattice frame used for protecting high roadbed and construction method |
| CN106968139A (en) * | 2017-03-09 | 2017-07-21 | 中铁十九局集团有限公司 | Construction method for railway roadbed support in jacking process of underpass railway jacking frame bridge |
| CN111021415A (en) * | 2020-01-06 | 2020-04-17 | 山东济铁工程建设集团有限公司 | Construction structure and method for transition beam of railway underpass type frame bridge |
| CN111139721A (en) * | 2020-01-16 | 2020-05-12 | 中铁第五勘察设计院集团有限公司 | Frame bridge penetrating existing railway bridge downwards and construction method thereof |
| CN212452141U (en) * | 2020-07-23 | 2021-02-02 | 中国建筑第五工程局有限公司 | Pushing frame bridge exit end roadbed protection thrust structure |
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| CN111809471B (en) | 2024-06-04 |
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