CN112709151A - Synchronous installation method for prestressed steel bundles and prefabricated pier segments - Google Patents
Synchronous installation method for prestressed steel bundles and prefabricated pier segments Download PDFInfo
- Publication number
- CN112709151A CN112709151A CN202011594655.8A CN202011594655A CN112709151A CN 112709151 A CN112709151 A CN 112709151A CN 202011594655 A CN202011594655 A CN 202011594655A CN 112709151 A CN112709151 A CN 112709151A
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- pier
- segment
- prefabricated
- prefabricated pier
- steel strand
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- 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
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Abstract
The application relates to a method for synchronously installing prestressed steel bundles and prefabricated bridge pier segments, which relates to the technical field of bridge engineering construction and comprises the following steps: s1: when a bridge pier foundation of a bridge is poured, one end of a steel strand bundle is fixed in the bridge pier foundation; s2: hoisting the prefabricated bridge pier segment to the position above the bridge pier foundation, wherein a distance is reserved between the bottom surface of the prefabricated bridge pier segment and the bridge pier foundation; s3: penetrating a traction rope from the prestress hole channel to the bottom from top to bottom, and connecting and fixing the other end of the steel strand bundle; s4: moving the prefabricated pier segment, and enabling the steel strand bundle to penetrate into a prestress pore channel of the prefabricated pier segment; s5: slowly lowering the prefabricated pier segment until the bottom surface of the prefabricated pier segment is attached to the top surface of the pier foundation when the steel strand bundle completely passes through the prestressed duct and is in a vertical state; this application adopts flexible steel strand bundle as the prestressing steel bundle, when accomplishing the steel strand bundle and wearing the bundle, carries out the installation of prefabricated pier segment, and the anchor work of steel strand bundle is simple convenient.
Description
Technical Field
The application relates to the technical field of bridge engineering construction, in particular to a synchronous installation method of a prestressed steel beam and a prefabricated pier segment.
Background
At present, the application of the assembly type bridge pier in bridge engineering is more and more extensive, the assembly type bridge pier is formed by splicing bridge pier sections, and the connection modes among the bridge pier sections mainly comprise three modes of reserved steel bar welding, steel bar sleeve connection and prestressed steel beam connection. Joints for welding reserved steel bars and connecting steel bar sleeves are mostly connected by wet joints; the prestressed steel bundles are connected by adopting dry joint joints, structural glue is coated on the joint surfaces to seal joints, and the prestressed steel bundles play a key role in the whole assembly pier.
The assembled pier for the connection of the prestressed steel bundles generally adopts the steps of firstly assembling pier sections, then penetrating the prestressed steel bundles, then carrying out anchoring and tensioning operations, fixing the anchoring ends of the later-penetrated prestressed steel bundles on a foundation bearing platform by adopting self-locking anchorages, reserving the extending anchoring ends in advance, wherein the self-locking anchorages are difficult to align, are not easy to assemble after aligning and are quite high in manufacturing cost. How to conveniently connect the assembled pier sections by utilizing prestressed steel beams is a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The embodiment of the application provides a synchronous installation method of a prestressed steel strand and a prefabricated pier segment, the flexible steel strand bundle is adopted as the prestressed steel strand, the installation of the prefabricated pier segment is carried out while the steel strand bundle penetrating is completed, and the anchoring work of the steel strand bundle is simple and convenient.
The application provides a synchronous installation method of a prestressed steel bundle and a prefabricated pier segment, which is characterized by comprising the following steps: s1: when a bridge pier foundation of a bridge is poured, one end of a steel strand bundle is fixed in the bridge pier foundation;
s2: hoisting the prefabricated pier segments above the pier foundation when the pier foundation is solidified to the designed strength, wherein a distance is reserved between the bottom surfaces of the prefabricated pier segments and the pier foundation;
s3: penetrating a traction rope from the prestressed duct of the prefabricated pier segment to the bottom from top to bottom, and connecting and fixing the other end of the steel strand bundle;
s4: moving the prefabricated pier segment, and simultaneously lifting a traction rope to drive a steel strand bundle to penetrate into a prestressed pore channel of the prefabricated pier segment;
s5: and slowly lowering the prefabricated pier segment until the bottom surface of the prefabricated pier segment is attached to the top surface of the pier foundation when the steel strand bundle completely passes through the prestressed duct and is in a vertical state.
In some embodiments, in step S2, the prefabricated pier segment is hoisted above the pier foundation by using a crane.
In some embodiments, the crane comprises a big hook and a small hook, and the big hook is used for hoisting the prefabricated pier segment; in step S3, a small hook is used to hang a hauling cable to the top end surface of the prefabricated pier segment, and the hauling cable penetrates from top to bottom through the prestressed duct of the prefabricated pier segment.
In some embodiments, in step S4, the small hook of the crane drives the pulling rope to lift the steel strand bundle.
In some embodiments, in step S4, when the end of the steel strand bundle approaches the pre-stressed duct of the prefabricated pier segment, the hauling cable lifting speed is slowed down; observing whether a hanging hole phenomenon occurs or not, and if not, normally lifting; if so, the end part of the steel strand bundle is firstly pushed into the prestressed duct.
In some embodiments, the two ends of the steel strand bundle are respectively a traction end and an anchoring end, and in step S1, the anchoring end is embedded into a pier foundation; in step S3, the tow rope is connected to a steel strand bundle.
In some embodiments, the traction end of the steel strand bundle is wrapped by a cone, and the end of the steel strand bundle is provided with a buckle for connection.
In some embodiments, in step S5, when the bottom surface of the prefabricated pier segment is attached to the top surface of the pier foundation, a temporary fixing mechanism is further installed on the prefabricated pier segment in the circumferential direction, and the temporary fixing mechanism fixes the prefabricated pier segment and the pier foundation.
In some embodiments, when a plurality of prefabricated pier segments need to be installed on a pier foundation, the step of installing the next prefabricated pier segment comprises the following steps: hoisting the next prefabricated pier segment above the previous prefabricated pier segment, wherein the distance between the bottom surface of the next prefabricated pier segment and the previous prefabricated pier segment is a certain distance; firstly, a steel strand bundle is pulled by a traction rope to pass through a prestressed duct of the next prefabricated pier segment; and moving the next prefabricated pier segment to align the next prefabricated pier segment with the previous prefabricated pier segment, and simultaneously stretching the steel strand bundle to completely pass through the prestress pore channel and be in a vertical state.
In some embodiments, the steel strand bundle comprises a plurality of steel strands, the plurality of steel strands form a regular hexagon, and adjacent steel strands are bonded with epoxy resin bonded steel glue.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a method for synchronously installing a prestressed steel strand and a prefabricated pier segment, wherein a flexible steel strand bundle is used as the prestressed steel strand, and one end of the steel strand bundle is fixed in a pier foundation when the pier foundation of a bridge is poured; hoisting the prefabricated pier segments above the pier foundation when the pier foundation is solidified to the designed strength; penetrating a traction rope from the prestressed duct of the prefabricated pier segment to the bottom from top to bottom, and connecting and fixing the other end of the steel strand bundle; moving the prefabricated pier segment, and lifting the traction rope to drive the steel strand bundle to penetrate into the prestressed pore channel of the prefabricated pier segment; slowly lowering the prefabricated pier segment until the steel strand bundle completely passes through the prestressed duct and is in a vertical state, and attaching the bottom surface of the prefabricated pier segment to the top surface of the pier foundation; the synchronous installation method of the prestressed steel bundles and the prefabricated pier segments realizes synchronous installation of the prestressed steel bundles and the prefabricated pier segments, is more convenient and efficient compared with the traditional installation method of installing the prefabricated pier segments firstly and then penetrating the prefabricated pier segments, and solves the problem of high anchoring cost in advance.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view illustrating hoisting a prefabricated pier segment to a position above a pier foundation according to an embodiment of the application;
FIG. 2 is a schematic diagram of a steel strand bundle being pulled by a pull rope according to an embodiment of the present application;
FIG. 3 is a schematic view of a steel strand bundle fully penetrating a pre-stressed duct according to an embodiment of the present application;
fig. 4 is a schematic view illustrating an installation of a temporary fixing mechanism to a segment of a precast pier according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of a trailing end of a steel strand bundle provided by an embodiment of the present application;
FIG. 6 is a cross-sectional view taken along line I-I of FIG. 5;
reference numerals: 1. a pier foundation; 2. a bundle of steel strands; 21. a traction end; 22. an anchoring end; 23. steel strand wires; 24. epoxy resin bonding steel glue; 25. a conical cylinder; 26. a sleeve; 27. looping; 3. a hauling rope; 4. prefabricating pier sections; 5. hoisting a machine; 51. a big hook; 52. a small hook; 6. a temporary fixing mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. 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 application.
As shown in fig. 1, the application discloses an embodiment of a method for synchronously installing a prestressed steel strand and a prefabricated pier segment, which is different from a traditional installation method that a prefabricated pier segment is installed first and then a prefabricated pier segment is penetrated, and the method for synchronously installing the prestressed steel strand and the prefabricated pier segment realizes synchronous installation of the prestressed steel strand and the prefabricated pier segment and anchors one end of the prestressed steel strand before installation.
The method for synchronously installing the prestressed steel bundles and the prefabricated pier segments comprises the following steps:
s1: when the bridge pier foundation 1 of the bridge is poured, one end of the steel strand bundle 2 is fixed in the bridge pier foundation 1 and directly poured into a whole with the bridge pier foundation 1;
s2: after the pier foundation 1 is solidified to the designed strength, hoisting the prefabricated pier segment 4 above the pier foundation 1, and keeping a distance from the bottom surface of the prefabricated pier segment 4 to the pier foundation 1;
s3: penetrating a traction rope 3 from the top to the bottom of a prestressed pore channel of the prefabricated pier segment 4, and connecting and fixing the other end of the steel strand bundle 2;
s4: moving the prefabricated pier segment 4, and simultaneously lifting the traction rope 3 to drive the steel strand bundle 2 to penetrate into a prestressed duct of the prefabricated pier segment 4;
s5: and (3) slowly lowering the prefabricated pier segment 4 until the bottom surface of the prefabricated pier segment is attached to the top surface of the pier foundation 1 when the steel strand bundle 2 completely passes through the prestressed duct and is in a vertical state.
As shown in fig. 1, in one embodiment, in step S2, the prefabricated pier segments 4 are hoisted above the pier foundation 1 using a crane 5. Specifically, generally, the prefabricated pier segment 4 is lifted to the upper side of the pier foundation 1, so that in the step S3, the hauling rope 3 is connected with the steel strand bundle 2, and the condition that a constructor directly stands below the prefabricated pier segment 4 when connecting the hauling rope 3 and the steel strand bundle 2 to increase accident risk is avoided.
In one embodiment, the crane 5 comprises a large hook 51 and a small hook 52, and the large hook 51 is used for lifting the prefabricated pier segment 4; in step S3, the hauling cable 3 is suspended to the top end surface of the prefabricated pier segment 4 by the small hook 52, and the hauling cable 3 is inserted from the top to the bottom of the prestressed duct of the prefabricated pier segment 4. Specifically, after hanging haulage rope 3 to prefabricated pier segment 4 top terminal surface, constructor takes the car of ascending a height to the top of prefabricated pier segment 4, and supplementary haulage rope 3 penetrates from last to bottom.
As shown in fig. 2 and 3, further, in step S4, the small hook 52 of the crane 5 drives the hauling rope 3 to lift the steel strand bundle 2, so that the steel strand bundle 2 penetrates into the prestressed duct of the prefabricated pier segment 4.
Specifically, in step S4, when the end of the steel strand bundle 2 (i.e., the connection end of the hauling rope 3 with the steel strand bundle 2) approaches the pre-stressed duct of the prefabricated pier segment 4, the hoisting speed of the hauling rope 3 is slowed down; observing whether a hanging hole phenomenon occurs or not, and if not, normally lifting; if so, the end part of the steel strand bundle 2 is firstly poked into the prestressed duct, and then lifting is carried out; the phenomenon that the prefabricated bridge pier segment 4 inclines to cause accidents due to the fact that hanging holes are formed in direct lifting is avoided.
In one embodiment, the two ends of the steel strand bundle 2 are the traction end 21 and the anchoring end 22, respectively, and the anchoring end 22 is buried in the pier foundation 1 in step S1; in step S3, the traction rope 3 is connected to the steel strand bundle 2.
As shown in fig. 5, the pulling end 21 of the steel strand bundle 2 is further wrapped by a cone 25, and its end is provided with a buckle 27 for easy connection. The cone 25 provides a transition from large to small at the trailing end 21. The eye 27 facilitates connection with the pull cord 3.
As shown in fig. 4, in one embodiment, in step S5, when the bottom surface of the prefabricated pier segment 4 is attached to the top surface of the pier foundation 1, the temporary fixing mechanism 6 is further installed on the prefabricated pier segment 4 in the circumferential direction, and the temporary fixing mechanism 6 fixes the prefabricated pier segment 4 and the pier foundation 1. The temporary fixing mechanism 6 can make the precast pier segment 4 more stable.
Further, when a plurality of prefabricated pier segments 4 need to be installed on the pier foundation 1, installing the next prefabricated pier segment 4:
hoisting the next prefabricated pier segment 4 above the previous prefabricated pier segment 4, wherein the distance from the bottom surface of the next prefabricated pier segment 4 to the previous prefabricated pier segment 4 is a certain distance;
firstly, a traction rope 3 is used for drawing a steel strand bundle 2 to pass through a prestressed duct of the next prefabricated pier segment 4;
and moving the next prefabricated pier segment 4 to be aligned with the previous prefabricated pier segment 4, and simultaneously stretching the steel strand bundle 2 to completely pass through the prestress pore channel and be in a vertical state.
As shown in fig. 5 and 6, in one embodiment, the steel strand bundle 2 includes a plurality of steel strands 23, the steel strands 23 form a regular hexagon, and adjacent steel strands 23 are bonded together by epoxy resin bonded steel glue. The steel strand bundle 2 has a flexible characteristic and a high tensile strength.
According to the synchronous installation method of the prestressed steel bundles and the prefabricated pier segments, the flexible steel strand bundle 2 is used as the prestressed steel bundle, and the prefabricated pier segments 4 are hoisted to the position above a pier foundation 1 through the hooks 51; hoisting the hauling rope 3 to the top end of the prefabricated pier segment 4 by using a small hook 52, penetrating the hauling rope 3 from the prestressed pore channel of the prefabricated pier segment 4 from top to bottom, and connecting and fixing the other end of the steel strand bundle 2; the prefabricated pier segment 4 is moved, and the traction rope 3 is lifted to drive the steel strand bundle 2 to penetrate into a prestress pore channel of the prefabricated pier segment 4; and slowly lowering the prefabricated pier segment 4 until the steel strand bundle 2 completely passes through the prestress pore channel and is in a vertical state, and attaching the bottom surface of the prefabricated pier segment to the top surface of the pier foundation 1. The synchronous installation method of the prestressed steel bundles and the prefabricated pier segments realizes synchronous installation of the prestressed steel bundles and the prefabricated pier segments, is more convenient and efficient compared with the traditional installation method of installing the prefabricated pier segments firstly and then penetrating the prefabricated pier segments, and anchors in advance, so that the problem of high anchoring cost is solved.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A synchronous installation method of a prestressed steel bundle and a prefabricated pier segment is characterized by comprising the following steps:
s1: when the pier foundation (1) of the bridge is poured, one end of the steel strand bundle (2) is fixed in the pier foundation (1);
s2: when the pier foundation (1) is solidified to the designed strength, hoisting the prefabricated pier segment (4) to the position above the pier foundation (1), and keeping a distance between the bottom surface of the prefabricated pier segment (4) and the pier foundation (1);
s3: penetrating a traction rope (3) from top to bottom through a prestressed duct of the prefabricated pier segment (4), and connecting and fixing the other end of the steel strand bundle (2);
s4: the prefabricated pier segment (4) is moved, and meanwhile, the traction rope (3) is lifted to drive the steel strand bundle (2) to penetrate into a prestress pore channel of the prefabricated pier segment (4);
s5: and slowly lowering the prefabricated pier segment (4) until the bottom surface of the prefabricated pier segment is attached to the top surface of the pier foundation (1) when the steel strand bundle (2) completely passes through the prestressed duct and is in a vertical state.
2. The method for synchronously installing prestressed steel bundles and precast pier segments according to claim 1, wherein the method comprises the following steps: in step S2, the prefabricated pier segment (4) is hoisted above the pier foundation (1) by using a crane (5).
3. The method for synchronously installing prestressed steel bundles and precast pier segments according to claim 2, wherein the method comprises the following steps: the crane (5) comprises a big hook (51) and a small hook (52), and the big hook (51) is adopted to hoist the prefabricated pier segment (4); in step S3, the hauling cable (3) is suspended to the top end surface of the prefabricated pier segment (4) by using the small hook (52), and the hauling cable (3) penetrates from top to bottom through the prestressed duct of the prefabricated pier segment (4).
4. The method for synchronously installing prestressed steel bundles and precast pier segments according to claim 3, wherein the method comprises the following steps: in step S4, the hook (52) of the crane (5) drives the hauling cable (3) to lift the steel strand bundle (2).
5. The method for synchronously installing prestressed steel bundles and precast pier segments according to claim 1, wherein the method comprises the following steps: in step S4, slowing down the lifting speed of the hauling rope (3) when the end of the steel strand bundle (2) approaches the pre-stressed duct of the prefabricated pier segment (4); observing whether a hanging hole phenomenon occurs or not, and if not, normally lifting; if yes, the end part of the steel strand bundle (2) is firstly pushed into the prestress pore channel.
6. The method for synchronously installing prestressed steel bundles and precast pier segments according to claim 1, wherein the method comprises the following steps: the two ends of the steel strand bundle (2) are respectively a traction end (21) and an anchoring end (22), and in the step S1, the anchoring end (22) is embedded into the pier foundation (1); in step S3, the pulling rope (3) is connected to the steel strand bundle (2).
7. The method for synchronously installing prestressed steel bundles and precast pier segments according to claim 6, wherein the method comprises the following steps: the traction end (21) of the steel strand bundle (2) is wrapped by the conical cylinder (25), and the end part of the traction end is provided with a buckle (27) convenient to connect.
8. The method for synchronously installing prestressed steel bundles and precast pier segments according to claim 1, wherein the method comprises the following steps: in step S5, when the bottom surface of the prefabricated pier segment (4) is attached to the top surface of the pier foundation (1), a temporary fixing mechanism (6) is further installed on the prefabricated pier segment (4) in the circumferential direction, and the temporary fixing mechanism (6) fixes the prefabricated pier segment (4) and the pier foundation (1).
9. The method for synchronously installing prestressed steel bundles and prefabricated pier segments according to claim 1, wherein when a plurality of prefabricated pier segments (4) need to be installed on a pier foundation (1), the step of installing the next prefabricated pier segment (4) comprises the following steps:
hoisting the next prefabricated pier segment (4) above the previous prefabricated pier segment (4), wherein the distance from the bottom surface of the next prefabricated pier segment (4) to the previous prefabricated pier segment (4) is a certain distance;
firstly, a steel strand bundle (2) is pulled by a pulling rope (3) to pass through a prestressed duct of the next prefabricated pier segment (4);
and moving the next prefabricated pier segment (4) to be aligned with the previous prefabricated pier segment (4), and simultaneously stretching the steel strand bundle (2) to completely penetrate through the prestress pore channel and be in a vertical state.
10. The method for synchronously installing prestressed steel bundles and precast pier segments according to claim 1, wherein the method comprises the following steps: the steel strand bundle (2) comprises a plurality of steel strands (23), the steel strands (23) form a regular hexagon, and adjacent steel strands (23) are bonded through epoxy resin bonded steel glue.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011594655.8A CN112709151A (en) | 2020-12-29 | 2020-12-29 | Synchronous installation method for prestressed steel bundles and prefabricated pier segments |
| CN202111322752.6A CN113957800A (en) | 2020-12-29 | 2021-11-09 | Synchronous installation method for prestressed steel bundles and prefabricated pier segments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011594655.8A CN112709151A (en) | 2020-12-29 | 2020-12-29 | Synchronous installation method for prestressed steel bundles and prefabricated pier segments |
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| CN112709151A true CN112709151A (en) | 2021-04-27 |
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| CN202011594655.8A Withdrawn CN112709151A (en) | 2020-12-29 | 2020-12-29 | Synchronous installation method for prestressed steel bundles and prefabricated pier segments |
| CN202111322752.6A Pending CN113957800A (en) | 2020-12-29 | 2021-11-09 | Synchronous installation method for prestressed steel bundles and prefabricated pier segments |
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| CN202111322752.6A Pending CN113957800A (en) | 2020-12-29 | 2021-11-09 | Synchronous installation method for prestressed steel bundles and prefabricated pier segments |
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Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100499977B1 (en) * | 2002-10-24 | 2005-07-07 | 노윤근 | Reinforced concrete unit pier block using prestressed concrete steel wire assembly and H-beam, and constructing method of fabricated reinforced concrete pier using the unit pier block |
| JP4283103B2 (en) * | 2003-12-24 | 2009-06-24 | 三井造船株式会社 | Steel pier with pressure-resistant core |
| CN103362311B (en) * | 2013-08-06 | 2016-08-17 | 天津鑫坤泰预应力专业技术有限公司 | A kind of traction apparatus of finished steel strand bundle band anchorage |
| CN103352432A (en) * | 2013-08-06 | 2013-10-16 | 天津鑫坤泰预应力专业技术有限公司 | Finished steel strand harness tractor with threaded connection sleeve |
| CN203807931U (en) * | 2013-12-18 | 2014-09-03 | 江苏中瑞路桥建设有限公司 | Connecting structure for prefabricated pier and foundation |
| CN104294753B (en) * | 2014-09-06 | 2016-05-04 | 安徽省交通建设有限责任公司 | A kind of hollow pier stud syndeton of bridge prefabrication and construction |
| CN104453245A (en) * | 2014-12-15 | 2015-03-25 | 天津鑫坤泰预应力专业技术有限公司 | Novel extrusion sleeve for finished prestress steel strand bundle |
| CN106087759B (en) * | 2016-08-08 | 2018-01-09 | 中国三冶集团有限公司 | A kind of threading method of prestressed strand threader and prestressed strand |
| CN206273875U (en) * | 2016-12-19 | 2017-06-23 | 上海应用技术大学 | A kind of attachment structure of prefabricated bent cap and prefabricated stand column |
| CN208949723U (en) * | 2018-08-01 | 2019-06-07 | 中铁四局集团有限公司 | A kind of Precast Concrete Segmental Bridges Bridge Pier Construction lifting lug |
| CN210529499U (en) * | 2019-05-14 | 2020-05-15 | 北京交通大学 | Segment, pier are assembled in pier prefabrication |
| CN110158475A (en) * | 2019-05-21 | 2019-08-23 | 北京工业大学 | A kind of prefabricated assembled bridge substructure and its construction method |
| CN210737339U (en) * | 2019-08-21 | 2020-06-12 | 武汉桥之恒桥梁工程技术有限公司 | Replaceable and shock-absorbing prestressed anchorage system for prefabricated assembly |
-
2020
- 2020-12-29 CN CN202011594655.8A patent/CN112709151A/en not_active Withdrawn
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2021
- 2021-11-09 CN CN202111322752.6A patent/CN113957800A/en active Pending
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| CN113957800A (en) | 2022-01-21 |
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Application publication date: 20210427 |