CN202543788U - Precast segment assembly pier structure - Google Patents
Precast segment assembly pier structure Download PDFInfo
- Publication number
- CN202543788U CN202543788U CN2012201745785U CN201220174578U CN202543788U CN 202543788 U CN202543788 U CN 202543788U CN 2012201745785 U CN2012201745785 U CN 2012201745785U CN 201220174578 U CN201220174578 U CN 201220174578U CN 202543788 U CN202543788 U CN 202543788U
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- segment assembly
- cushion cap
- prestressed
- precast segment
- pier structure
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Abstract
The utility model discloses a precast segment assembly pier structure which comprises a bearing platform, wherein a pier body is arranged on the bearing platform; and prestressed reinforcing bars are arranged on the pier body and the bearing platform. The precast segment assembly pier structure is characterized in that the pier body consists of a plurality of precast reinforced concrete segments which are mutually connected; prestressing ducts are preserved in the precast reinforced concrete segments; and the prestressed reinforcing bars are arranged in the prestressing ducts in a penetrating way. According to the precast segment assembly pier structure disclosed by the utility model, the workload of field welding and concrete casting can be effectively reduced; the quality control is facilitated; meanwhile, the construction progress is accelerated and the influence on the ambient environment of a construction site is reduced; the theme of an economic growth mode of environment friendliness, energy economization and low carbon is accorded; and remarkable economic benefits and favorable social benefits are obtained.
Description
Technical field
The utility model relates to the civil Engineering Design technical field, specifically a kind of precast segment assembly pier structure.
Background technology
At present, the normally used Urban Bridge substructure of China is cast-in-situ construction method, and shortcoming is a long construction period, and urban environment is brought more adverse influence.Along with constantly advancing on a large scale of China's urban construction process, energy-saving and environmental protection, low-carbon (LC) become the theme of China's economic development gradually.
One of main challenge that the design of current urban bridge structural faces be exactly the owner with the resident except require bridge structure safe and durable, also require to reduce interference, shorten the traffic jam time, reduce the various noises of generation in haulage vehicle and the construction etc. to traffic on every side through rapid construction.The proposition of these requirements has promoted carrying out of precast segment assembly unit bridge technology research work, has also promoted popularization and the application of industrialized precast segment assembling construction technology in Urban Bridge is built.
Because section assembling correlation technique research and to be applied in China less relatively, existing application and study and mainly concentrate on superstructure, the utilization of part Urban Bridge prefabricated subsection assembling technique also only is confined to the external prestressing continuous box girder.
For substructure, domestic and international research work day by day increases in recent years, but the domestic engineering precedent of still not having successful implementation.Only several bottoms adopt the engineering of prefabrication system to be the large-scale Jiang Qiaoliang of striding over strait, adopt cast-in-place wet seam connection etc. like the marine section of Donghai Bridge bridge pier pier shaft, are not the precast segment erection method bridge pier on the complete meaning.
The utility model content
The purpose of the utility model is to provide a kind of precast segment assembly unit bridge pier structure, guarantees the safety of structure.
For realizing this purpose; The technical scheme of the utility model is following: a kind of precast segment assembly unit bridge pier structure, comprise cushion cap, and cushion cap is provided with pier shaft; Said pier shaft and cushion cap are provided with prestressed reinforcement; It is characterized in that this pier shaft is made up of a plurality of interconnective prefabricated reinforced concrete sections, reserve prestressed pore passage in the prefabricated reinforced concrete sections, prestressed reinforcement is arranged in the prestressed pore passage.Two contiguous prefabricated steel concrete sections seam are provided with shear connector.Reserve prestressed pore passage in the cushion cap.Prestressed reinforcement adopts steel strand or fining twisted steel; Prestressed pore passage adopts prestress wire bellows or prestressed thick reinforcement sleeve pipe or withdrawing pipe.
The structure that can be used for precast segment assembly unit bridge pier in the utility model is fully at the precasting yard processing and fabricating; Field by using glueds joint seam or stem grafting seam form connects; Assembly unit finishes and carries out prestressed stretch-draw formation pier stud overall structure; At utmost reduced on-site concrete and built workload, reduced influence traffic and surrounding enviroment.The prestressed reinforcement that the utility model adopts connects the bridge pier sections, can comprise various bridge pier form of fractures.
Description of drawings
Fig. 1 is that the pillarwork of the utility model is formed sketch map (anchored end is in the cushion cap outside).
Fig. 2 is that the pillarwork of the utility model is formed sketch map (anchored end is inner at cushion cap).
Fig. 3 is that the prefabricated reinforced concrete sections seam section of the utility model is arranged sketch map.
The specific embodiment
A kind of precast segment assembly unit bridge pier structure comprises cushion cap 2, and cushion cap 2 is provided with pier shaft, and said pier shaft and cushion cap 2 are provided with prestressed reinforcement 3, it is characterized in that this pier shaft is made up of a plurality of interconnective prefabricated subsections 1, reserves prestress pipe 6 in the prefabricated subsection 1.The shear connector 5 that adopts male and fomale(M&F) to agree with between two contiguous prefabricated sections 1 seam 4,1 of the prefabricated subsection that cushion cap is adjacent also adopts shear connector 5.Cushion cap adopts cast-in-place mode to build, and reserves prestressed pore passage.Adopt between the contiguous prefabricated sections and glued joint seam or stem grafting seam, connect into integral body through prestressed reinforcement.According to a particular embodiment of the invention, precast pier sections 1 adopts ordinary reinforced concrete, reserves prestressed pore passage 6, and the pier stud profile comprises multiple shapes such as rectangle, square, circle, dumb-bell shape.Topmost the top of a sections is provided with prestressed anchor fixed end 7; The anchored end 8 of bottom can be in the cushion cap outside, also can be inner at cushion cap.The prestressed reinforcement material can be steel strand, also can be fining twisted steel; Presstressed reinforcing steel can be whole and wear, and also can be that segmentation connects with connector; Mud jacking after prestressed reinforcement stretch-draw finishes, the prestressing force road that sealing is reserved.
With the single-column pier about the high 10m of pier is example, vertically precast segment assembly unit pier shaft is divided into 2～3 sections, amounts to 1～2 seam.The sections height is relevant with the plant equipment ability of construction and installation, and the internal diameter of prestressed pore passage is generally 5cm～15cm, and shear connector adopts trapezoidal (30 °～60 ° at inclination angle) or fillet trapezoid cross section, and the shear connector size is 20%～45% of a bridge pier section area.
Fig. 1 is the structural representation of the pillarwork of the utility model embodiment.Wherein Fig. 1 a is an elevation, and Fig. 1 b is the lateral view of Fig. 1 a.The cushion cap 2 inner prestressed pore passages 6 of reserving, stagger on the locus each other in the duct; Cushion cap 2 is provided with prefabricated subsection pier shaft 1, is provided with prestress pipe 6 in the prefabricated subsection pier shaft 1; The sections seam adopts glueds joint seam or stem grafting seam; For the shear behavior of seam 4, the shear connector that adopts male and fomale(M&F) to agree with on the seam.
Fig. 2 is the structural representation of the pillarwork of another embodiment of the utility model.Wherein Fig. 2 a is an elevation, and Fig. 2 b is the lateral view of Fig. 2 a.In this embodiment, because anchored end is inner at cushion cap, therefore when cast-in-place cushion cap, reserve prestressed pore passage and reinforcing bar.
The pier shaft sections is made in precast yard, reserves prestressed pore passage.The cast-in-site cushion cap.Treat that the cushion cap concrete reaches after the load age, prefabricated pier shaft sections is installed in handling, adopts between sections and glueds joint seam or the connection of stem grafting seam.After accomplishing, assembly unit forms bridge abutment integral through tensioned prestressing bar.Prestressed pore passage can adopt bellows or circular sleeve or withdrawing pipe etc. to form the duct.
A kind of job practices of precast segment assembly unit bridge pier structure is characterized in that this method may further comprise the steps: A, making prefabricated reinforced concrete sections, reserve prestressed pore passage in the said prefabricated subsection; B, carry out bearing platform construction at the scene, reserve prestressed pore passage in the cushion cap; C, multistage prefabricated reinforced concrete sections is spliced on the cushion cap successively, keeps seam closely connected; D, in prefabricated subsection and cushion cap, wear prestressed reinforcement in the prestressed pore passage, prestressed reinforcement of tensioning then, and slip casting sealing in the said prestress pipe, sealing off and covering anchorage is also built bearing pad stone, accomplishes the construction of bridge pier.
The utility model has following technical characterstic: effectively reduce the workload of field Welding and concreting, be of value to quality control, accelerated construction speed simultaneously; Reduced influence, met the style of economic increase theme of environmental protection and energy saving low-carbon (LC), remarkable in economical benefits the job site surrounding enviroment; Social benefit is good; And the shear connector that seam adopts male and fomale(M&F) to agree with has strengthened the shear behavior of seam, easy construction.
Claims (5)
1. precast segment assembly unit bridge pier structure; Comprise cushion cap; Cushion cap is provided with pier shaft, and said pier shaft and cushion cap are provided with prestressed reinforcement, it is characterized in that this pier shaft is made up of a plurality of interconnective prefabricated reinforced concrete sections; Pre-buried prestressed pore passage in the prefabricated reinforced concrete sections, prestressed reinforcement is arranged in the prestressed pore passage.
2. by the described a kind of precast segment assembly unit bridge pier structure of claim 1, it is characterized in that: between two contiguous prefabricated steel concrete sections seam shear connector is set, between the prefabricated reinforced concrete sections that cushion cap is adjacent shear connector is set also.
3. by the described a kind of precast segment assembly unit bridge pier structure of claim 1, it is characterized in that: cushion cap is reserved with prestressed pore passage.
4. by the described a kind of precast segment assembly unit bridge pier structure of claim 3, it is characterized in that: the bridge pier top is provided with anchored end, and the cushion cap outside or cushion cap inside are provided with anchored end, and the two ends of prestressed reinforcement are connected with anchored end.
5. by the described a kind of precast segment assembly unit bridge pier structure of claim 3, it is characterized in that: prestressed reinforcement adopts steel strand or fining twisted steel; Prestressed pore passage adopts prestress wire bellows or prestressed thick reinforcement sleeve pipe or withdrawing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201745785U CN202543788U (en) | 2012-04-24 | 2012-04-24 | Precast segment assembly pier structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201745785U CN202543788U (en) | 2012-04-24 | 2012-04-24 | Precast segment assembly pier structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202543788U true CN202543788U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012201745785U Expired - Fee Related CN202543788U (en) | 2012-04-24 | 2012-04-24 | Precast segment assembly pier structure |
Country Status (1)
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| CN (1) | CN202543788U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612038A (en) * | 2015-01-22 | 2015-05-13 | 宁波大学 | Flange-connecting concrete-filled double-wall steel pipe prefabricated assembly piers with additional dampers |
| CN104612039A (en) * | 2015-02-04 | 2015-05-13 | 邢台路桥建设总公司 | Assembled steel integrated bridge |
| CN105970803A (en) * | 2016-06-03 | 2016-09-28 | 南京工业大学 | Shearing resisting energy consumption device and construction method of prefabricated pier |
| CN108978447A (en) * | 2018-06-29 | 2018-12-11 | 南京理工大学 | The method for improving Precast Concrete Segmental Bridges bridge pier energy dissipation capacity |
| CN108978714A (en) * | 2018-08-30 | 2018-12-11 | 北京工业大学 | One kind being used for the prefabricated staggered joint erection segment separated column of underground structure |
| CN112853933A (en) * | 2021-02-24 | 2021-05-28 | 江南大学 | Segment prefabricated assembled concrete-filled steel tube pier with restorable function |
| CN113373798A (en) * | 2021-05-14 | 2021-09-10 | 同济大学 | Prefabricated assembled pier and connecting method thereof |
-
2012
- 2012-04-24 CN CN2012201745785U patent/CN202543788U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612038A (en) * | 2015-01-22 | 2015-05-13 | 宁波大学 | Flange-connecting concrete-filled double-wall steel pipe prefabricated assembly piers with additional dampers |
| CN104612039A (en) * | 2015-02-04 | 2015-05-13 | 邢台路桥建设总公司 | Assembled steel integrated bridge |
| CN104612039B (en) * | 2015-02-04 | 2016-07-06 | 邢台路桥建设总公司 | Assembled steel one bridge |
| CN105970803A (en) * | 2016-06-03 | 2016-09-28 | 南京工业大学 | Shearing resisting energy consumption device and construction method of prefabricated pier |
| CN108978447A (en) * | 2018-06-29 | 2018-12-11 | 南京理工大学 | The method for improving Precast Concrete Segmental Bridges bridge pier energy dissipation capacity |
| CN108978714A (en) * | 2018-08-30 | 2018-12-11 | 北京工业大学 | One kind being used for the prefabricated staggered joint erection segment separated column of underground structure |
| CN108978714B (en) * | 2018-08-30 | 2021-05-14 | 北京工业大学 | Be used for prefabricated fissure of displacement of underground structure to assemble segment components of a whole that can function independently post |
| CN112853933A (en) * | 2021-02-24 | 2021-05-28 | 江南大学 | Segment prefabricated assembled concrete-filled steel tube pier with restorable function |
| CN113373798A (en) * | 2021-05-14 | 2021-09-10 | 同济大学 | Prefabricated assembled pier and connecting method thereof |
| CN113373798B (en) * | 2021-05-14 | 2022-09-20 | 同济大学 | Prefabricated assembled pier and connecting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20210424 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |