CN212452726U - Pile foundation conversion structure of bridge - Google Patents
Pile foundation conversion structure of bridge Download PDFInfo
- Publication number
- CN212452726U CN212452726U CN202021206265.4U CN202021206265U CN212452726U CN 212452726 U CN212452726 U CN 212452726U CN 202021206265 U CN202021206265 U CN 202021206265U CN 212452726 U CN212452726 U CN 212452726U
- Authority
- CN
- China
- Prior art keywords
- pile foundation
- newly
- built
- temporary support
- pier stud
- 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
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to a building engineering technical field specifically, relates to a pile foundation transform structure of bridge. The pile foundation conversion structure comprises a newly-built pile foundation, an enlarged pile foundation, newly-built pier studs, a temporary support structure and a cross beam; respectively arranging an expanded pile foundation on two sides of the newly-built pile foundation along the width direction of the bridge, and connecting the newly-built pile foundation and the expanded pile foundation into a whole; the bottom of the newly-built pier stud is fixedly arranged at the top of the newly-built pile foundation, and the top of the newly-built pier stud is fixedly provided with a cross beam; and a temporary supporting structure is fixedly arranged at the top of each enlarged pile foundation. The pile foundation conversion structure can be completed before the subway passes through on site, has the characteristics of convenience in construction and easiness in conversion, can break the original pile foundation which conflicts with the subway interval structure, avoids adverse effects on the subway structure, and solves the problem that the existing bridge pile foundation is insufficient in bearing capacity.
Description
Technical Field
The application relates to the technical field of constructional engineering, in particular to a pile foundation conversion structure of a bridge.
Background
In urban rail transit engineering, subway sections are generally laid along municipal roads, can pass through complex strata in the period, meet municipal pipelines and buildings, and inevitably meet municipal facilities such as pedestrian overpasses and urban overpasses.
The prior art only adopts interim support to the bridge pile superstructure that is influenced and carries out interim top, transmit the upper portion load subaerial, it forms new basis not to be under construction, it removes interim top-supporting structure after the completion to wait that the subway interval passes through, the surplus pile foundation continues to use, the pile foundation can be concentrated the load and transmit to the subway interval structure on, produce adverse effect to the subway structure, and the bridge surplus pile foundation can have the problem that the bearing capacity is not enough, lead to whole settlement too big, seriously influence the bridge and use, bring serious potential safety hazard to municipal facilities.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a construction convenience, the pile foundation transform structure of bridge of easily converting, and this transform structure converts the pile foundation into the enlarged footing to can abolish the former pile foundation that conflicts with the interval structure of subway.
According to a first aspect of the embodiments of the present application, there is provided a pile foundation conversion method for a bridge, the bridge including a pile foundation, a pier stud and a main beam, the pile foundation conversion method including the steps of:
newly building enlarged pile foundations on two sides of the existing pile foundations, wherein the two enlarged pile foundations are arranged along the width direction of the bridge;
constructing a temporary supporting structure between the enlarged pile foundation and the main beam;
dismantling the existing pier stud and the existing pile foundation;
and (3) building a pile foundation between the two enlarged pile foundations, building a pier stud between the newly-built pile foundation and the main beam, and connecting the newly-built pile foundation and the enlarged pile foundation into a whole.
Preferably, after the pile foundation is newly built between the two enlarged pile foundations, the method further comprises:
and (6) removing the temporary support structure.
Preferably, before removing the existing pier stud and the existing pile foundation, the method further comprises the following steps:
jacking the main beam to a preset height;
after dismantling existing pier stud and existing pile foundation, still include:
and restoring the height of the main beam before jacking.
Preferably, before the new construction of the enlarged pile foundations on both sides of the existing pile foundation, the method further comprises:
and (6) excavating a foundation pit.
Preferably, the temporary supporting structure comprises an I-shaped steel, a jack and a temporary supporting pier column which are arranged from top to bottom in sequence;
the I-shaped steel extends along the width direction of the bridge;
the two ends of the I-shaped steel are respectively provided with the jack;
the temporary supporting pier stud and the enlarged pile foundation are fixedly connected through anchor bolts, flange plates and stiffening ribs.
Preferably, the temporary support structure further comprises a pressure-bearing steel plate arranged between the jack and the i-steel and between the jack and the temporary support pier stud;
the temporary supporting pier column is a concrete-filled steel tube column and comprises a steel tube, a longitudinal steel reinforcement cage arranged in the steel tube and concrete poured in the steel tube.
According to a second aspect of the embodiments of the present application, there is also provided a pile foundation converting structure used in any one of the pile foundation converting methods provided in the above technical solutions, including: building a pile foundation, expanding the pile foundation, building a pier stud, a temporary supporting structure and a cross beam;
two sides of the newly-built pile foundation are respectively provided with one enlarged pile foundation along the width direction of the bridge, and the newly-built pile foundation and the enlarged pile foundation are connected into a whole;
the bottom of the newly-built pier stud is fixedly arranged at the top of the newly-built pile foundation, the top of the newly-built pier stud is fixedly provided with the cross beam, and the cross beam is used for supporting the main beam;
and the top of each enlarged pile foundation is fixedly provided with one temporary support structure, and the temporary support structures are used for supporting the main beams.
Preferably, an anti-seismic anchor bolt is fixedly installed between the newly-built pier stud and the newly-built pile foundation.
Preferably, the temporary support structure comprises I-shaped steel and temporary support piers which are arranged from top to bottom in sequence.
Preferably, the temporary supporting structure further comprises a jack arranged between the I-steel and the temporary supporting pier stud;
the I-shaped steel extends along the width direction of the bridge;
and two ends of the I-shaped steel are respectively provided with the jack.
Preferably, the temporary support structure further comprises a pressure-bearing steel plate arranged between the jack and the i-steel and between the jack and the temporary support pier stud.
Preferably, the temporary support pier stud is a steel pipe concrete column, and comprises a steel pipe, a longitudinal steel reinforcement cage arranged in the steel pipe, and concrete poured in the steel pipe.
Preferably, the temporary support pier stud and the enlarged pile foundation are fixedly connected through anchor bolts, flange plates and stiffening ribs.
Preferably, the temporary supporting structure further comprises a rubber pad fixedly arranged on the top of the temporary supporting structure and the cross beam.
Preferably, the I-steel is a double-spliced I-steel arranged in parallel.
Preferably, the newly-built pile foundation, the enlarged pile foundation, the newly-built pier stud and the beam are all made by in-situ pouring.
Adopt the pile foundation transform structure of bridge that provides in this application embodiment, have following beneficial effect:
the pile foundation conversion structure can realize the dismantling of the existing pile foundation and the construction of a newly-built pile foundation by expanding the temporary support of the pile foundation and the temporary support structure to the main beam, simultaneously realize the structural adjustment of the pile foundation, and connect the expanded pile foundation and the newly-built pile foundation which are arranged on two sides of the existing pile foundation into a whole to form the converted expanded pile foundation, and improve the stability, reliability and safety of the pile foundation of the bridge by expanding the projection area of the pile foundation on the horizontal plane; the pile foundation conversion structure can be completed before the subway passes through on site, has the characteristics of convenience in construction and easiness in conversion, converts the pile foundation into an enlarged foundation, can break the original pile foundation which conflicts with the subway interval structure, avoids generating adverse effects on the subway structure, and solves the problem that the bearing capacity of the existing bridge pile foundation is insufficient.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a process flow diagram of a pile foundation conversion method according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural view of an enlarged pile foundation constructed on both sides of an existing pile foundation of a bridge;
FIG. 3 is a schematic structural view of a temporary support structure being constructed between an enlarged pile foundation and a main beam;
fig. 4 is a schematic structural view after existing pier stud and existing pile foundation are removed;
fig. 5 is a schematic structural diagram of a pile foundation conversion structure according to an embodiment of the present application;
fig. 6 is a schematic structural view of the bridge after the temporary support structure is removed.
Reference numerals:
1-existing pile foundation; 2-existing pier stud; 3, a main beam; 4-enlarging the pile foundation; 5-a temporary support structure; 6, building a pile foundation; 7-newly building a pier column; 8-a cross beam; 9-the ground; 10-a rubber pad; 41-anchor bolt; 42-flange plate; 43-a stiffener; 51-I-steel; 52-a jack; 53-temporary support of the pier stud; 54-bearing steel plate.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The embodiment of the application provides a method and a structure for converting a pile foundation of a bridge, which are convenient to construct and easy to convert.
The buried depth of the bottom of the pile foundation of the bridge is usually deep, when a subway is built at the bottom of the bridge, the pile foundation and the subway interval conflict frequently, the relation between the pile foundation and the subway interval needs to be properly processed, the safety of municipal facilities during subway construction and operation is ensured, when the municipal facilities cannot be avoided through line adjustment and slope adjustment, the structure conversion can be carried out on the pile foundation of the bridge through the pile foundation conversion method and the pile foundation conversion structure, the pile foundation with the deep buried depth of the existing bridge is converted into the pile foundation with the shallow buried depth, and the problem that the pile foundation hinders subway construction is solved.
Example one
As shown in fig. 1 and 6, an embodiment of the present application provides a method for converting a pile foundation of a bridge, where as shown in fig. 2, the bridge includes a pile foundation, a pier stud, and a main beam 3, and the method includes the following steps:
step S200, newly building enlarged pile foundations 4 on two sides of an existing pile foundation 1, wherein the two enlarged pile foundations 4 are arranged along the width direction of a bridge; as shown in the structure of fig. 2, an enlarged pile foundation 4 is newly built on each of two sides of an existing pile foundation 1, and the arrangement direction of the two enlarged pile foundations 4 is coincident with the width direction of the bridge, so that the full width of the main beam 3 can be supported; in order to build the enlarged pile foundation 4, as shown in fig. 1, before step S200 of building the enlarged pile foundations 4 on both sides of the existing pile foundation 1, the pile foundation conversion method may further include step S100 of excavating a foundation pit and constructing the advanced part of the enlarged pile foundation; that is, before the enlarged pile foundation 4 is newly built, foundation pits (not shown) for construction are excavated below the ground 9 on both sides of the existing pile foundation 1;
step S300, constructing a temporary supporting structure 5 between the enlarged pile foundation 4 and the main beam 3; as shown in the structure of fig. 3, a temporary support structure 5 is constructed on a newly-built enlarged pile foundation 4, and a main beam 3 of the bridge is supported by the temporary support structure 5 so as to replace an existing pile foundation 1 and an existing pier stud 2 by the temporary support structure 5; the temporary support structure 5 comprises an I-shaped steel 51, a jack 52 and a temporary support pier 53 which are arranged from top to bottom in sequence; the I-steel 51 extends along the width direction of the bridge; two jacks 52 are respectively arranged at two ends of the I-shaped steel 51; the temporary supporting pier column 53 is fixedly connected with the enlarged pile foundation 4 through an anchor bolt 41, a flange 42 and a stiffening rib 43; the temporary support structure 5 may further include a bearing steel plate 54 disposed between the jack 52 and the i-beam 51, and between the jack 52 and the temporary support pier 53; the temporary support piers 53 may be concrete-filled steel tubular columns including steel tubes (not shown), longitudinal steel cages (not shown) disposed in the steel tubes, and concrete (not shown) poured in the steel tubes;
step S500, removing the existing pier stud 2 and the existing pile foundation 1; as shown in the structure of fig. 4, after the main beam 3 is supported by the enlarged pile foundation 4 and the temporary support structure 5, the existing pier stud 2 and the existing pile foundation 1 are removed, and the cross beam 8 at the top of the existing pier stud 2 can be reused; in order to facilitate the removal of the existing pier stud 2 and the existing pile foundation 1, before the existing pier stud 2 and the existing pile foundation 1 are removed, the pile foundation conversion method can further comprise a step S400, the main beam 3 can be lifted to a preset height through the jack 52, and the preset height can be determined according to actual conditions so as to facilitate the removal of the existing pier stud 2, the existing pile foundation 1 and the cross beam 8 as a main purpose; in order to ensure that the height of the main beam 3 is unchanged, the height of the bottom of the main beam 3 at each pivot can be measured before jacking; when the main beam 3 is jacked by the jack 52 before the existing pier stud 2 and the existing pile foundation 1 are removed, after the existing pier stud 2 and the existing pile foundation 1 are removed, the pile foundation conversion method can further include step S600 of restoring the height of the main beam 3 to the height before jacking so as to ensure the normal working state of the bridge;
step S700, a pile foundation 6 is newly built between two expanded pile foundations 4, a pier stud 7 is newly built between the newly built pile foundation and the main beam 3, and the newly built pile foundation 6 and the expanded pile foundations 4 are connected into a whole; as shown in the structure of fig. 5, a pile foundation 6 is newly built at the position where an existing pile foundation 1 is removed, a pier stud 7 is newly built on the newly built pile foundation 6, a beam 8 can adopt an existing beam 8 which is removed before, and a beam 8 can also be newly built, and the newly built pile foundation, the pier stud and the beam 8 support a main beam 3, so that the conversion of the pile foundation is realized, in order to ensure that a subway can be constructed smoothly, compared with the existing pile foundation 1, the newly built pile foundation is buried to a shallower depth, the converted pile foundation is formed by enlarging a pile foundation 4 and the newly built pile foundation 6, the structural strength of the pile foundation is improved by increasing the occupied area of the pile foundation, the bridge can be ensured to work normally, and the requirement of the supporting strength is met;
after the pile foundation 6 is newly built between the two enlarged pile foundations 4, step S800 is further included, and the temporary support structure 5 is removed. As shown in fig. 6, after the new pile foundation 6, pier stud and cross beam 8 support the main beam 3, the temporary support structure 5 provided on the top of the enlarged pile foundation 4 can be removed, thereby completing the structural transformation of the pile foundation.
The pile foundation conversion method comprises the steps of building expanded pile foundations 4 on two sides of an existing pile foundation 1, supporting a main beam 3 of a bridge through temporary supporting structures 5 arranged on the expanded pile foundations 4, removing existing pier studs 2 and the existing pile foundations 1 while supporting the main beam 3 through the temporary supporting structures 5, building a pile foundation 6 at the position where the existing pile foundations 1 are removed, wherein the depth of the new pile foundation 6 is smaller than that of the existing pile foundations 1, the new pile foundation 6 and the expanded pile foundations 4 are connected into an integral structure, the projection areas of the new pile foundations 6 and the expanded pile foundations 4 on the horizontal plane are larger than that of the existing pile foundations 1 on the horizontal plane, the existing pile foundations 1 which conflict with the subway interval structure can be removed when the existing pile foundations 1 are removed, and therefore removal of the existing pile foundations 1 and temporary supporting of the new pile foundations 6 through the expanded pile foundations 4 and the temporary supporting structures 5 can be achieved The construction of (3) simultaneously realizes the structural adjustment of the pile foundation, and connects the expanded pile foundation 4 arranged at the two sides of the existing pile foundation 1 and the newly-built pile foundation 6 into a whole to form the converted expanded pile foundation, and improves the stability, reliability and safety of the pile foundation of the bridge by expanding the projection area of the pile foundation 4 on the horizontal plane; the pile foundation conversion method can be completed before the subway passes through on site, has the characteristics of convenience in construction and easiness in conversion, converts the pile foundation into an enlarged foundation, can break the original pile foundation which conflicts with the subway interval structure, avoids adverse effects on the subway structure, and solves the problem of insufficient bearing capacity of the existing bridge pile foundation.
Compared with the prior art, the pile foundation conversion method converts the original structure foundation into another foundation form, realizes load transfer, realizes transition by means of the temporary support structure 5 in the conversion process, and has the advantages of definite force transfer, convenience in operation, short construction period, no influence on normal use of the bridge and the like.
By the method for expanding the pile foundations 4, the bearing capacity of the bridge foundations is not reduced, the settlement of the bridge foundations caused during the construction of subway sections does not exceed the control index of the bridge, and the pile foundations can be converted before the construction of the subway.
Meanwhile, in the pile foundation conversion process, when the maximum differential settlement of adjacent piers of the main beam 3 exceeds a specified control value, the construction is stopped, and the main beam 3 is jacked to recover the settlement difference; after jacking in place, the jack 52 is locked to ensure that the elevation of the main beam 3 is unchanged, and the elevation of the bottom of the main beam 3 needs to be monitored in real time in the jacking process; and after the subway section passes through and is settled stably, constructing and expanding the later part of the pile foundation 4, and newly building a pier column 7, a cross beam 8, an anti-seismic anchor bolt and a support.
Example two
The embodiment of the present application further provides a pile foundation conversion structure used in the above pile foundation conversion method, as shown in the structure of fig. 5, the pile foundation conversion structure is used for the pile foundation conversion of a bridge, and includes: newly building a pile foundation 6, an enlarged pile foundation 4, newly building a pier stud 7, a temporary support structure 5 and a cross beam 8; along the width direction of the bridge, two sides of the newly-built pile foundation 6 are respectively provided with an expanded pile foundation 4, and the newly-built pile foundation 6 and the expanded pile foundation 4 are connected into a whole; the two enlarged pile foundations 4 are symmetrically arranged by taking the newly-built pile foundation 6 as a center; as shown in the structure of fig. 6, the newly-built pile foundation 6 in the middle and the enlarged pile foundations 4 on both sides are connected into a whole to form a pile foundation after the structure conversion; the bottom of the newly-built pier stud 7 is fixedly arranged at the top of the newly-built pile foundation 6, the top of the newly-built pier stud is fixedly provided with a cross beam 8, and the cross beam 8 is used for supporting the main beam 3; an anti-seismic anchor bolt is fixedly arranged between the newly-built pier stud 7 and the newly-built pile foundation 6, and the bottom of the newly-built pier stud 7 can be fixedly arranged together through parts such as the anti-seismic anchor bolt; a temporary support structure 5 is fixedly installed on the top of each enlarged pile foundation 4, and the temporary support structure 5 is used for supporting the main beam 3.
Above-mentioned pile foundation transform structure realizes the support to girder 3 through setting up expansion pile foundation 4 and interim bearing structure 5 in new building foundation both sides to realize demolising of existing pile foundation 1 and existing pier stud 2, and newly-built pile foundation 6 in the position of demolising the pile foundation, change the existing pile foundation that is not conform to the requirement into newly-built pile foundation 6 that can satisfy subway construction requirement, can be under the condition that does not influence bridge normal use and be under the construction.
As shown in the structure of fig. 3, the temporary support structure 5 comprises an i-shaped steel 51, a jack 52 and a temporary support pier 53 which are arranged in sequence from top to bottom; the I-steel 51 extends along the width direction of the bridge; the I-beam 51 can be a double-spliced I-beam arranged in parallel; two jacks 52 are respectively arranged at two ends of the I-shaped steel 51; the temporary support structure 5 may further include a bearing steel plate 54 disposed between the jack 52 and the i-beam 51, and between the jack 52 and the temporary support pier 53; the temporary support pier 53 can be a steel tube concrete column, which comprises a steel tube, a longitudinal steel reinforcement cage arranged in the steel tube, and concrete poured in the steel tube; as shown in fig. 5, the pile foundation conversion structure may further include rubber pads 10 fixedly installed on the top of the temporary support structure 5 and the cross beam 8, and the main beam 3 may be cushioned and damped by the rubber pads 10.
The jack 52 in the temporary support structure 5 is placed at the top end of the temporary support pier 53, and pressure-bearing steel plates 54 are clamped between the jack 52 and the temporary support pier 53 and between the jack 52 and the I-steel 51, so that the pressure of the main beam 3 can be uniformly distributed as much as possible through the pressure-bearing steel plates 54, and the damage of the jack 52 or the temporary support pier 53 caused by stress concentration is avoided; simultaneously, the superstructure of bridges such as girder 3 is held up through the double-spliced I-steel, can also prevent to pass the inhomogeneous phenomenon of power and take place.
As shown in fig. 3 and the structure of the drawings, the temporary support pier 53 and the enlarged pile foundation 4 can be fixedly connected through the anchor bolts 41, the flange 42 and the stiffening ribs 43.
In the pile foundation conversion structure, the newly-built pile foundation 6, the enlarged pile foundation 4, the newly-built pier stud 7 and the cross beam 8 can be made by cast-in-place.
By the aid of the pile foundation conversion structure, implementation can be completed before subway crossing on site, the enlarged pile foundation 4 is constructed, the temporary supporting structure 5 is erected on the enlarged pile foundation 4, the temporary supporting structure 5 supports a bridge structure to realize stress conversion, the original pile foundation is conveniently removed, the permanent structure system is constructed and transmitted to the enlarged foundation, and finally the temporary supporting structure 5 is removed.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A pile foundation conversion structure, comprising: building a pile foundation, expanding the pile foundation, building a pier stud, a temporary supporting structure and a cross beam;
two sides of the newly-built pile foundation are respectively provided with one enlarged pile foundation along the width direction of the bridge, and the newly-built pile foundation and the enlarged pile foundation are connected into a whole;
the bottom of the newly-built pier stud is fixedly arranged at the top of the newly-built pile foundation, the top of the newly-built pier stud is fixedly provided with the cross beam, and the cross beam is used for supporting the main beam;
and the top of each enlarged pile foundation is fixedly provided with one temporary support structure, and the temporary support structures are used for supporting the main beams.
2. The pile foundation conversion structure of claim 1, wherein an anti-seismic anchor bolt is fixedly installed between said newly-built pier stud and said newly-built pile foundation.
3. The pile foundation conversion structure according to claim 1, wherein the temporary support structure comprises I-shaped steel and temporary support piers arranged in sequence from top to bottom.
4. The pile foundation conversion structure of claim 3, wherein the temporary support structure further comprises a jack disposed between the I-beam and the temporary support pier stud;
the I-shaped steel extends along the width direction of the bridge;
and two ends of the I-shaped steel are respectively provided with the jack.
5. The pile foundation conversion structure of claim 4, wherein the temporary support structure further comprises bearing steel plates disposed between the jack and the I-steel and between the jack and the temporary support pier stud.
6. The pile foundation conversion structure of claim 3, wherein the temporary support pier is a concrete-filled steel tubular column comprising a steel tube, a longitudinal reinforcement cage disposed in the steel tube, and concrete poured in the steel tube.
7. The pile foundation conversion structure of claim 3, wherein said temporary support piers are fixedly connected to said enlarged pile foundation by anchor bolts, flanges and stiffening ribs.
8. The pile foundation conversion structure of claim 3, further comprising rubber pads fixedly mounted to the temporary support structure and the top of the cross beam.
9. The pile foundation conversion structure of claim 3, wherein the I-beams are double split I-beams arranged in parallel.
10. The pile foundation conversion structure according to any one of claims 1 to 9, wherein said newly built pile foundation, said enlarged pile foundation, said newly built pier stud and said cross-beam are all cast-in-place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021206265.4U CN212452726U (en) | 2020-06-24 | 2020-06-24 | Pile foundation conversion structure of bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021206265.4U CN212452726U (en) | 2020-06-24 | 2020-06-24 | Pile foundation conversion structure of bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212452726U true CN212452726U (en) | 2021-02-02 |
Family
ID=74462812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021206265.4U Active CN212452726U (en) | 2020-06-24 | 2020-06-24 | Pile foundation conversion structure of bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212452726U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636464A (en) * | 2020-06-24 | 2020-09-08 | 中铁第五勘察设计院集团有限公司 | Bridge pile foundation conversion method and structure |
-
2020
- 2020-06-24 CN CN202021206265.4U patent/CN212452726U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636464A (en) * | 2020-06-24 | 2020-09-08 | 中铁第五勘察设计院集团有限公司 | Bridge pile foundation conversion method and structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113123361B (en) | Construction method for safely passing through municipal bridge pile foundation underpinning system under shield tunnel | |
| CN109778721A (en) | Synchronization of jacking up bridge top and the bottom structure carries out the method that bridge increases transformation | |
| CN108316368B (en) | Active underpinning method for bridge pile foundation of single-column single pile | |
| CN111636464A (en) | Bridge pile foundation conversion method and structure | |
| CN111779025A (en) | In-situ protection structure crossing foundation pit municipal pipe network box culvert and construction method | |
| CN112942147A (en) | Bridge pile active underpinning method | |
| CN209779634U (en) | Assembled reinforced concrete bearing structure suitable for subway station foundation ditch | |
| CN212452726U (en) | Pile foundation conversion structure of bridge | |
| CN111236089A (en) | Uneven jacking system and uneven jacking construction method for existing bridge superstructure | |
| CN213062136U (en) | Independent foundation underpinning system for storey-adding building | |
| KR101011805B1 (en) | Method of constructing underground structure crossing pile bases in a pile-based ground and underground structure constructed using the same | |
| CN112879026A (en) | Temporary backrest support structure for rectangular pipe jacking construction and construction method thereof | |
| CN111379438A (en) | Vertical temporary supporting system for underground structure and using method | |
| CN111622091B (en) | Stress test method for prefabricated bridge pier | |
| CN211872669U (en) | Uneven jacking system of current bridge superstructure | |
| CN111648246B (en) | Construction method for building medium and large steel truss girder | |
| CN216405153U (en) | Attached type cast-in-place concrete overline bridge column type support dismantling device | |
| CN216947827U (en) | High-position beam falling buttress structure of steel box girder | |
| CN113699895B (en) | Construction method for overhead jacking of frame-structured bridge into existing line of multiple tracks | |
| CN112813852B (en) | Repairing and reinforcing method for bridge deck subsidence of in-service bridge | |
| CN215801111U (en) | Overpass pile foundation underpinning structure | |
| CN220504566U (en) | Unloading platform of cantilever steel beam on top of concrete column | |
| CN114575270B (en) | Bridge jacking and reinforcing method | |
| CN217128046U (en) | Asymmetric pier supporting platform system device | |
| CN114837455B (en) | Method for reconstructing sunken hydraulic building |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |