CN111501451B - Construction method for jacking municipal frame bridge - Google Patents
Construction method for jacking municipal frame bridge Download PDFInfo
- Publication number
- CN111501451B CN111501451B CN202010392889.8A CN202010392889A CN111501451B CN 111501451 B CN111501451 B CN 111501451B CN 202010392889 A CN202010392889 A CN 202010392889A CN 111501451 B CN111501451 B CN 111501451B
- Authority
- CN
- China
- Prior art keywords
- bridge
- frame
- jacking
- municipal
- foundation pit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- E01C1/00—Design or layout of roads, e.g. for noise abatement, for gas absorption
- E01C1/04—Road crossings on different levels; Interconnections between roads on different levels
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- 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
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of municipal frame bridge construction, in particular to a construction method for jacking a municipal frame bridge. The jacking municipal frame bridge structure comprises a foundation pit, wherein a first fender post crown beam and a plurality of first fender posts are arranged on two sides of the foundation pit, a back post is arranged at the tail part of the foundation pit, and a back post crown beam is arranged at the top part of the back post; a frame bridge which is cast at the moment is arranged in the foundation pit, and a sliding part is arranged at the bottom of the frame bridge; and both sides of the frame structure bridge in place are provided with a second fender post crown beam and a plurality of second fender posts. The incremental launching construction method is applied to design and construction of the municipal frame structure bridge close to the high-speed railway bridge, the problem of pile uplift of the high-speed railway bridge caused by soil unloading in construction is solved by using the structural counterweight, influence on deformation of the high-speed railway bridge pile due to longer soil exposure time is reduced through time and space timeliness, and influence on existing railway operation caused by construction of the municipal road close to the high-speed railway bridge pile is effectively reduced.
Description
Technical Field
The invention relates to the technical field of municipal frame bridge construction, in particular to a construction method for jacking a municipal frame bridge.
Background
The municipal road engineering is an important component of urban construction, the municipal frame bridge is a highway-railway overpass which is penetrated under a road and close to a railway, the main structure of the urban frame bridge is a box-shaped frame, and the normal operation of the railway is not influenced in the implementation process of the frame bridge. At present, due to rapid development of high-speed railway construction, municipal road underpass high-speed railway bridge projects are increased day by day, and the problem of closing to high-speed railway bridge piles is encountered in the underpass process. In recent years, the requirement for deformation control of high-speed railway bridges is increasingly strict, railway safety in an operation period must be ensured, the prior art of the existing municipal engineering close to the high-speed railway bridge piles mainly adopts open excavation method, underground excavation method and shield method construction, construction cost of the underground excavation method and the shield method is generally higher, the requirement for municipal road line position is severe, the high-speed railway bridge piles are easy to bulge due to soil body unloading during foundation pit excavation by open excavation method construction, and the smoothness of the high-speed railway is higher than the limit due to the fact that the bulge amount is easily exceeded due to improper construction control, so that driving safety is affected.
Disclosure of Invention
The invention aims to provide a construction method for jacking a municipal frame bridge, so as to solve the problems. In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
on one hand, the application provides a jacking municipal frame bridge construction structure which comprises a foundation pit, wherein a first fender post crown beam and a plurality of first fender posts are arranged on two sides of the foundation pit, the first fender post crown beam is arranged at the top of each first fender post, a back post is arranged at the tail of the foundation pit, and a back post crown beam is arranged at the top of each back post; a frame bridge which is cast at the moment is arranged in the foundation pit, and a sliding part is arranged at the bottom of the frame bridge; and a second fender post crown beam and a plurality of second fender posts are arranged on two sides of the frame bridge in place, and the second fender post crown beams are arranged at the tops of the second fender posts. The first fender post and the second fender post are connected. The diameter of the first fender pile is 800mm, the distance is 1200mm, and the length is 15 m; the diameter of the second fender pile is 1250mm, the interval is 1750mm, and the length is 13 m.
Optionally, a first slope is arranged in front of the foundation pit, and the slope of the first slope is 1: 1.5. c20 concrete with the thickness of 10cm is sprayed above the first slope.
Optionally, the afterbody of foundation ditch is provided with the earth-moving lane, earth-moving lane and ground junction are provided with the second and put the slope, the slope that the slope was put to the second is 1: 1.
optionally, a gravel cushion is arranged below the sliding piece. The slider is 200mm thick slide, the thickness of rubble bed course is 200 mm. The bottom plate of the frame structure bridge is a C40 waterproof reinforced concrete bottom plate.
Optionally, a back beam is arranged between the back pile and the frame bridge, one end of the back beam is in contact with the back pile, and a steel plate is arranged on the end face of the other end of the back beam.
Optionally, a first counterweight is arranged at the top of the frame-structured bridge, and ballast blocking blocks are arranged on two sides of the first counterweight; the ballast blocking block and the frame structure bridge are integrally formed; and second balance weights are arranged on two sides of the bottom plate of the frame bridge.
Optionally, the first counterweight is a ballast stone; the second weight piece is high-density aggregate, and the particle density of the high-density aggregate is greater than or equal to 47KN/m3。
Optionally, the high density aggregate comprises natural magnetite.
On the other hand, the invention provides a construction method for jacking a municipal frame bridge, which comprises the following steps:
excavating a foundation pit, drilling holes on two sides of the foundation pit and pouring a plurality of first fender posts, and connecting the first fender posts on two sides of the foundation pit through first fender post crown beams respectively; drilling and pouring a plurality of back piles at the tail of the foundation pit, and arranging back pile crown beams at the tops of the back piles;
a first relief slope is arranged in front of the foundation pit jacking; arranging a second fender post crown beam and a plurality of second fender posts at two sides of the frame bridge in place, wherein the second fender post crown beam is arranged at the top of the second fender post;
arranging a broken stone cushion layer and a sliding piece at the bottom of the foundation pit in sequence;
pouring a frame structure bridge;
gradually excavating and jacking the frame-constructed bridge, wherein the length of each excavation and jacking is 1-3 m;
when the front cantilever of the frame bridge is jacked to the tail part of the bridge body in place, sequentially filling a first counterweight at the top of the frame bridge, and sequentially filling a second counterweight at a bottom plate of the frame bridge; the filling height of the first counterweight is 0.5m, and subsequent filling is synchronously performed along with jacking construction; the length of each filling is the same as the length of the next jacking;
after the top bridge is in place, removing the first counterweight at the top of the frame bridge in a segmented manner, and backfilling and earthing; and removing the second counterweight in the frame bridge in sections, and performing accessory projects such as road pavement and the like.
Optionally, before the frame bridge is poured, the method further includes:
c20 concrete was sprayed on the first slope to a thickness of 10 cm.
The invention has the beneficial effects that:
the incremental launching construction method is applied to design and construction of the municipal frame structure bridge close to the high-speed railway bridge, the problem of pile uplift of the high-speed railway bridge caused by soil unloading in construction is solved by using the structural counterweight, influence on deformation of the high-speed railway bridge pile due to longer soil exposure time is reduced through time and space timeliness, and influence on existing railway operation caused by construction of the municipal road close to the high-speed railway bridge pile is effectively reduced.
The town road closes on high-speed railway bridge stake constructs the bridge type through adopting the top frame of advancing, can effectively reduce the open cut and construct the influence that the longer high-speed railway bridge stake of soil body exposure time caused. The jacking frame structure bridge is matched with the top plate and the bottom plate to balance weight, so that the influence of unloading of space soil on the deformation of the high-speed rail bridge pile is effectively reduced, and the method has an obvious effect on controlling the deformation of the bridge pile. The top plate ballast material can cause certain adverse effect to the top plate reinforcement, so the ballast is not too high, the bottom plate high-density aggregate material is adopted for balancing weight, and the top plate ballast material has the characteristics of large density, small occupied space, standard components and repeated use, and has the advantages of flexible construction, high safety and small influence in combination consideration.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic top view of a top-down municipal frame bridge according to an embodiment of the invention;
FIG. 2 is a schematic sectional view taken along line A-A in FIG. 1;
FIG. 3 is a schematic view of a top plate ballast structure of a municipal frame bridge according to an embodiment of the invention;
FIG. 4 is a schematic cross-sectional view B-B of FIG. 3;
fig. 5 is an enlarged schematic view of C in fig. 3.
The labels in the figure are: 1. a back pile crown beam; 2. a first fender post crown beam; 3. a second fender post crown beam; 4. a connecting beam; 5. a foundation pit; 6. an earth-moving lane; 7. a first slope is set; 8. a second slope is released; 9. the frame forms a bridge; 10. a deck of a overpass bridge; 11. a bridge pier of the overpass bridge; 12. a back beam; 13. back piles; 14. a first fender post; 15. a slider; 16. a gravel cushion layer; 17. a first weight member; 18. a ballast blocking block; 19. a second weight member; 20. and a second fender post.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
On one hand, as shown in fig. 1 to 5, the embodiment provides a jacking municipal frame bridge structure for a high-speed railway bridge, which includes a foundation pit 5, wherein both sides of the foundation pit 5 are provided with a first fender post crown beam 2 and a plurality of first fender posts 14, the first fender post crown beam 2 is arranged at the top of the first fender post 14, the tail of the foundation pit 5 is provided with a back post 13, and the top of the back post 13 is provided with a back post crown beam 1; a frame bridge 9 which is cast at present is arranged in the foundation pit 5, and a sliding part 15 is arranged at the bottom of the frame bridge 9; and a second fender post crown beam 3 and a plurality of second fender posts 20 are arranged on two sides of the frame bridge 9 in place, and the second fender post crown beam 3 is arranged at the tops of the second fender posts 20. The first and second fender posts 14, 20 are connected. The diameter of the first fender post 14 is 800mm, the distance is 1200mm, and the length is 15 m; the diameter of the second fender post 20 is 1250mm, the interval is 1750mm, and the length is 13 m. The foundation pit 5 is provided with a back pile 13 to provide jacking force for jacking the frame structure bridge 9. And the two sides of the frame bridge in place are provided with fender posts which are mainly used for jacking guidance and preventing the soil body from laterally collapsing.
Optionally, a first slope 7 is arranged in front of the foundation pit 5, and the slope of the first slope 7 is 1: 1.5. c20 concrete with the thickness of 10cm is sprayed above the first slope 7.
Optionally, the afterbody of foundation ditch 5 is provided with fortune soil lane 6, fortune soil lane 6 and ground junction are provided with the second and put slope 8, the slope that slope 8 was put to the second is 1: 1.
optionally, a gravel cushion 16 is arranged below the sliding member 15. The sliding member 15 is a 200mm thick sliding plate, and the thickness of the gravel cushion 16 is 200 mm. The bottom plate of the frame structure bridge 9 is a C40 waterproof reinforced concrete bottom plate.
Optionally, a back beam 12 is disposed between the back pile 13 and the frame bridge 9, one end of the back beam 12 is in contact with the back pile 13, and a steel plate is disposed on an end surface of the other end.
Optionally, a first counterweight 17 is arranged at the top of the frame bridge 9, and ballast blocking blocks 18 are arranged on two sides of the first counterweight 17; the ballast blocking block 18 and the frame bridge 9 are integrally formed; and second balance weights 19 are arranged on two sides of the bottom plate of the frame bridge 9. When the main body of the frame bridge 9 is poured in the foundation pit 5, the ballast blocking blocks 18 at the top of the frame bridge 9 are poured together.
Optionally, the first counterweight 17 is a ballast; the second weight member 19 is a high-density aggregate having a particle density of at least 47KN/m3. In order to reduce the influence of soil unloading, the frame bridge 9 adopts a mode of combining a ballast counterweight of a top plate gravel road with a counterweight of a high-density aggregate material of a bottom plate. The high-density aggregate material is a high-quality and high-density aggregate made of natural magnetite, and is mainly used as aggregate of loose broken stone or high-density concrete, and its minimum density can be up to 47KN/m3. The bottom plate adopts high density aggregate material counter weight and roof counter weight to play the synergism, and this material has the density height, and small characteristics under the corresponding weight condition reduce the inside area occupied of frame structure bridge, do not influence the top and go out native.
On the other hand, the present embodiment provides a construction method for jacking a municipal frame bridge 9, including step S101, step S102, step S103, step S104, step S105, step S106, and step S107.
S101, excavating a foundation pit 5, drilling holes on two sides of the foundation pit 5 and pouring a plurality of first fender posts 14, and connecting the first fender posts 14 on two sides of the foundation pit 5 through first fender post crown beams 2 respectively; drilling and pouring a plurality of back piles 13 at the tail part of the foundation pit 5, and arranging a back pile crown beam 1 at the top of each back pile 13;
s102, arranging a first slope 7 in front of the jacking of the foundation pit 5; arranging a second fender post crown beam 3 and a plurality of second fender posts 20 at two sides of the frame bridge 9 in place, wherein the second fender post crown beam 3 is arranged at the tops of the second fender posts 20;
s103, arranging a broken stone cushion layer 16 and a sliding piece 15 at the bottom of the foundation pit 5 in sequence;
s104, pouring a frame structure bridge 9;
s105, excavating and jacking the frame-structured bridge 9 successively, wherein the length of each excavation and jacking is 1-3 m; the jacking process adopts a construction method of simultaneously excavating soil and jacking a frame structure, and the excavation footage is not more than 3m each time.
S106, when the front cantilever of the frame bridge 9 is jacked to the in-position tail part of the bridge body, sequentially filling a first counterweight 17 at the top of the frame bridge 9, and sequentially filling a second counterweight 19 at the bottom plate of the frame bridge 9; the filling height of the first counterweight 17 is 0.5m, and subsequent filling is synchronously performed along with jacking construction; the length of each filling is the same as the length of the next jacking; when the jacking begins, the frame structure bridge 9 is not weighted, when the front cantilever of the frame structure bridge 9 jacks to the tail part of the bridge body in position, the top plate begins to fill with weight material to 0.5m, and subsequent weight is synchronously carried out along with the jacking construction. The bottom plate adopts high density aggregate material counter weight and roof counter weight to play the synergism, and this material has the density height, and small characteristics under the corresponding weight condition reduce the inside area occupied of frame structure bridge, do not influence the top and go out native.
S107, after the top bridge is in place, removing the first balance weight part 17 at the top of the frame structure bridge 9 in a segmented mode, and backfilling and earthing; and a second counterweight 19 in the frame bridge 9 is removed in sections, and auxiliary projects such as road surfaces and the like are performed.
Optionally, between step S103 and step S104, step S1031 is further included.
And step S1031, spraying C20 concrete with the thickness of 10cm on the first slope 7.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (11)
1. A construction method for jacking a municipal frame bridge is characterized by comprising the following steps:
excavating a foundation pit (5), drilling holes on two sides of the foundation pit (5) and pouring a plurality of first fender posts (14), and connecting the first fender posts (14) through first fender post crown beams (2) on two sides of the foundation pit (5) respectively; drilling holes at the tail part of the foundation pit (5) and pouring a plurality of back piles (13), wherein back pile crown beams (1) are arranged at the tops of the back piles (13);
a first slope (7) is arranged in front of the jacking of the foundation pit (5); arranging a second fender post crown beam (3) and a plurality of second fender posts (20) at two sides of the frame bridge (9) in place, wherein the second fender post crown beam (3) is arranged at the tops of the second fender posts (20);
a broken stone cushion layer (16) and a sliding piece (15) are sequentially arranged at the bottom of the foundation pit (5);
pouring a frame structure bridge (9);
the frame construction bridge (9) is excavated and jacked in sequence, and the length of each excavation and jacking is 1-3 m;
when the front cantilever of the frame construction bridge (9) is jacked to the tail part of the bridge body in position, a first counterweight (17) is gradually filled at the top of the frame construction bridge (9), and a second counterweight (19) is gradually filled at the bottom plate of the frame construction bridge (9); the filling height of the first counterweight (17) is 0.5m, and subsequent filling is synchronously performed along with jacking construction; the length of each filling is the same as the length of the next jacking;
after the top bridge is in place, removing the first balance weight (17) at the top of the frame structure bridge (9) in a segmented manner, and backfilling and earthing; and removing a second counterweight (19) in the frame bridge (9) in a segmented manner, and performing auxiliary engineering.
2. The jacking municipal frame bridge construction method according to claim 1, wherein: the jacking municipal frame bridge comprises a foundation pit (5), wherein a first fender post crown beam (2) and a plurality of first fender posts (14) are arranged on two sides of the foundation pit (5), the first fender post crown beam (2) is arranged at the top of each first fender post (14), a back post (13) is arranged at the tail of the foundation pit (5), and a back post crown beam (1) is arranged at the top of each back post (13); a frame bridge (9) which is poured at present is arranged in the foundation pit (5), and a sliding part (15) is arranged at the bottom of the frame bridge (9); and a second fender post crown beam (3) and a plurality of second fender posts (20) are arranged on two sides of the frame structure bridge (9) in place, and the second fender post crown beam (3) is arranged at the tops of the second fender posts (20).
3. The jacking municipal frame bridge construction method according to claim 2, wherein: the place ahead of foundation ditch (5) is provided with first slope (7), the slope of first slope (7) of putting is 1: 1.5.
4. the jacking municipal frame bridge construction method according to claim 2, wherein: the afterbody of foundation ditch (5) is provided with fortune soil lane (6), fortune soil lane (6) are provided with the second with the ground junction and put slope (8), the slope that slope (8) were put to the second is 1: 1.
5. the jacking municipal frame bridge construction method according to claim 2, wherein: and a gravel cushion layer (16) is arranged below the sliding piece (15).
6. The jacking municipal frame bridge construction method according to claim 2, wherein: a back beam (12) is arranged between the back pile (13) and the frame structure bridge (9), one end of the back beam (12) is in contact with the back pile (13), and a steel plate is arranged on the end face of the other end.
7. The jacking municipal frame bridge construction method according to claim 1, wherein: a first counterweight (17) is arranged at the top of the frame structure bridge (9), and ballast blocking blocks (18) are arranged on two sides of the first counterweight (17); the ballast blocking block (18) and the frame structure bridge (9) are integrally formed; and second balance weights (19) are arranged on two sides of the bottom plate of the frame structure bridge (9).
8. The jacking municipal frame bridge construction method according to claim 7, wherein: the first counterweight part (17) is a ballast; the second weight part (19) is high-density aggregate, and the particle density of the high-density aggregate is more than or equal to 47KN/m3。
9. The jacking municipal frame bridge construction method according to claim 8, wherein: the high-density aggregate is natural magnetite.
10. The method for constructing the jacking municipal framing bridge according to claim 1, wherein before the pouring of the framing bridge (9), the method further comprises:
c20 concrete with the thickness of 10cm is sprayed on the first slope (7).
11. The jacking municipal frame bridge construction method according to claim 1, wherein: the auxiliary works comprise road pavements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392889.8A CN111501451B (en) | 2020-05-11 | 2020-05-11 | Construction method for jacking municipal frame bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010392889.8A CN111501451B (en) | 2020-05-11 | 2020-05-11 | Construction method for jacking municipal frame bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111501451A CN111501451A (en) | 2020-08-07 |
| CN111501451B true CN111501451B (en) | 2021-08-31 |
Family
ID=71875537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010392889.8A Active CN111501451B (en) | 2020-05-11 | 2020-05-11 | Construction method for jacking municipal frame bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111501451B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554201B (en) * | 2020-11-24 | 2022-07-15 | 中铁第四勘察设计院集团有限公司 | Construction method of underpass project |
| CN113089464A (en) * | 2021-04-28 | 2021-07-09 | 中铁第六勘察设计院集团有限公司 | Method for controlling bridge deformation in road under-crossing high-speed rail bridge engineering |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200846520A (en) * | 2007-05-16 | 2008-12-01 | Yuo Pin Constructure Co Ltd | Span-by-span and top-down bridge construction method and system thereof |
| CN107142948A (en) * | 2017-05-18 | 2017-09-08 | 河北省高速公路廊坊北三县管理处 | A kind of highway wears high ferro viaduct system and construction method without pre- leave |
| CN110159294A (en) * | 2019-05-08 | 2019-08-23 | 中铁二十二局集团第五工程有限公司 | A kind of high steep landform tunnel immediately adjacent to bridge section spreading open cut tunnel construction method |
| CN110924450A (en) * | 2019-12-18 | 2020-03-27 | 湖北工业大学 | Method for protecting existing viaduct friction pile in pit under foundation pit excavation condition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8458839B2 (en) * | 2009-07-27 | 2013-06-11 | Encon Technologies, Llc | Apparatus and method for replacing a bridge using a pre-cast construction techniques |
-
2020
- 2020-05-11 CN CN202010392889.8A patent/CN111501451B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200846520A (en) * | 2007-05-16 | 2008-12-01 | Yuo Pin Constructure Co Ltd | Span-by-span and top-down bridge construction method and system thereof |
| CN107142948A (en) * | 2017-05-18 | 2017-09-08 | 河北省高速公路廊坊北三县管理处 | A kind of highway wears high ferro viaduct system and construction method without pre- leave |
| CN110159294A (en) * | 2019-05-08 | 2019-08-23 | 中铁二十二局集团第五工程有限公司 | A kind of high steep landform tunnel immediately adjacent to bridge section spreading open cut tunnel construction method |
| CN110924450A (en) * | 2019-12-18 | 2020-03-27 | 湖北工业大学 | Method for protecting existing viaduct friction pile in pit under foundation pit excavation condition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111501451A (en) | 2020-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101831873B (en) | Temporary bridge covered excavation method for constructing box culvert below traffic ground line of operating track | |
| CN111501451B (en) | Construction method for jacking municipal frame bridge | |
| CN111396095B (en) | Tunnel simple arch open cut tunnel structure penetrating through huge karst cave and construction method thereof | |
| CN104652279A (en) | Box culvert advancing construction method for building new frame bridge above existing subway structure | |
| CN111139721A (en) | Frame bridge penetrating existing railway bridge downwards and construction method thereof | |
| CN210887325U (en) | Protection architecture of subway tunnel | |
| CN104674645A (en) | Integral plate type small bridge and culvert combination applicable to soft soil foundations | |
| CN106917358A (en) | A kind of cable-stayed bridge main-beam combination constructing method thereof and its counter weight construction system | |
| CN111305031A (en) | Bridge structure for reversely constructing underpass existing road and construction method | |
| CN111172833A (en) | Construction method of steep slope high embankment structure | |
| CN111041995B (en) | Construction method for U-shaped frame structure to penetrate high-speed rail bridge obliquely downwards | |
| US3843988A (en) | Method for excavating an underpass beneath an existing roadway | |
| CN109056738A (en) | Excavation method below high-speed railway | |
| CN105986830A (en) | Underground-excavation building method for roadside strip-shaped underground garage | |
| CN113389218A (en) | Retaining wall structure for entrance and exit of road bridge and construction method thereof | |
| Haugerud et al. | The lake lugano crossing-technical solutions | |
| CN211872560U (en) | Frame bridge of existing railway bridge is worn down | |
| Clarkson et al. | PIPE-JACKING APPLIED TO LARGE STRUCTURES. | |
| CN211947873U (en) | Bridge structure for reversely constructing existing roads | |
| Lunardi | The cellular arch method: technical solution for the construction of the Milan railway's venezia station | |
| CN219280462U (en) | Construction structure for extending railway abutment into tunnel portal | |
| Zhu et al. | Application of Typical Engineering | |
| CN109811605B (en) | Traffic fluffing method for underground subway construction in underpass tunnel | |
| Whiting et al. | Changi Airport station design and construction | |
| CN1566545A (en) | Anti-large deformation reinforcement method for railway and highway bridge in subsidence area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |