CN218813151U

CN218813151U - Prefabricated Y shape pier

Info

Publication number: CN218813151U
Application number: CN202223015708.3U
Authority: CN
Inventors: 彭华春; 李靖; 张艳军; 李元俊; 曹文杰; 殷琳琳; 刘欣楠; 刘阳明; 韩稼春
Original assignee: China Railway Siyuan Survey and Design Group Co Ltd
Current assignee: China Railway Siyuan Survey and Design Group Co Ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-04-07
Anticipated expiration: 2032-11-09

Abstract

The utility model provides a prefabricated Y shape pier, include the Y shape pier that is connected gradually the formation by the prefabricated segmentation pier of a plurality of sections, adjacent section set up in a plurality of shear force key spacing connection of the two seam through the interval between the segmentation pier, the shear force key is including the concave key and the convex key of mutually supporting, the convex key is the terrace with edge shape, the concave key is the recess that shape and convex key match, a plurality of section the segmentation pier still includes the prestressing force pipeline of reservation, a plurality of sections after the segmentation pier is connected the concatenation of prestressing force pipeline forms and holds the U type pipeline that prestressing force muscle passed. The dry joint connection is adopted, only the epoxy resin adhesive is coated, the installation is convenient and rapid, and the shear key not only provides enough shear resistance for the joint, but also plays a role in accurate positioning during the installation. The utility model is suitable for a prefabricated installation of complex construction pier, especially Y shape pier, preparation and installation procedure are simple and convenient, shorten construction period, reduce the influence to urban road traffic, and the shear resistance is effectual.

Description

Prefabricated Y shape pier

Technical Field

The utility model belongs to the technical field of the bridge, concretely relates to prefabricated Y shape pier.

Background

At present, the bridge pier prefabricating and installing methods at home and abroad mainly comprise two methods: and the grouting sleeve is connected with the post-cast strip. The grouting sleeve connection is mainly suitable for simple single-column or double-column type piers, and the connection position structure needs to be straight; the post-cast strip connection needs to bind reinforcing steel bars and pour concrete on site, and has complex procedures and longer construction period.

Urban rail transit, municipal bridge are higher to the requirement of view, and conventional single-column T shape mound, rectangle mound etc. can not satisfy the owner to the demand of view, need carry out the view to the pier molding during the construction and handle for the pier outward appearance is more complicated relatively, for example Y shape mound etc.. When the bridge pier adopts a prefabrication installation process, the joint treatment of the capping beam and the pier column is a difficult point, and the existing prefabrication installation method is usually suitable for the bridge pier with the conventional shape and has poor application effect on the bridge pier with the complex structure.

Chinese patent application No. CN105239500a discloses a prefabricated assembly type concrete pier, which is characterized in that shear nails are welded on steel plates firstly, and then the steel plates are pre-embedded when concrete pier segments are prefabricated. And pre-stressed steel beam pore channels are reserved on the precast concrete pier segments and the steel plates. And then, the precast concrete pier segments are installed in sequence, and the segments are contacted with each other through the embedded steel plates. And tensioning the prestressed steel bundles, and finally grouting and sealing the anchor. When the prefabricated assembled concrete pier is used, the joint materials are steel materials, so that the bearing capacity of the joint of the concrete pier segment can be improved, the pier anti-seismic capacity is improved, the prefabricated assembled concrete pier is suitable for being used in the joint of a conventional pier column, the shear force is realized through the cooperation of the shear force nails and the steel plates, the manufacturing and installation processes are complex, and the shear effect is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's weak point, provide one kind and be applicable to the prefabricated installation of complex construction pier, especially Y shape pier, preparation and installation procedure are simple and convenient, reduction construction period, reduce the influence to urban road traffic, the effectual prefabricated Y shape pier of resistance to shear.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a prefabricated Y shape pier, includes the Y shape pier that forms of connecting gradually by the prefabricated segmentation pier of a plurality of sections, adjacent section set up in the spacing connection of a plurality of shear force keys of the two seam through the interval between the segmentation pier, the shear force key is including the concave key and the convex key of mutually supporting, the convex key is the terrace with edge shape, the concave key is the recess that shape and convex key match, a plurality of sections the segmentation pier still includes the prestressing force pipeline of reservation, a plurality of sections after the segmentation pier is connected the prestressing force pipeline concatenation forms and holds the U type pipeline that the prestressing force muscle passed.

Further, the segmentation pier includes two sections, is pier bent cap and pier shaft respectively, the pier shaft is Y shape structure, the joint face of pier bent cap bottom sets up the concave key, the joint face at pier shaft top sets up the convex key, two branches and its open end and pier bent cap top surface of pier shaft are walked around to the bottom of U type pipeline flush. The U-shaped pipeline is convenient for tensioning the prestressed tendons, is suitable for piers with complex structures, is particularly suitable for Y-shaped piers, can solve the problem that dry joints can not be tensioned through tensioning the prestressed tendons, and can improve the shearing resistance of the joints.

Furthermore, a plurality of supporting cushion stones are arranged on the top surface of the Y-shaped pier.

Furthermore, seams among the segmented piers are bonded and fixed through epoxy resin adhesives. The dry joint is adopted between the segmented piers, and only the epoxy resin adhesive is coated, so that the installation is convenient and rapid, the installation procedure is simplified, the construction period can be shortened, the influence on urban road traffic is reduced, and the epoxy resin adhesive has good waterproof performance, can play a role in waterproofing in a humid environment, and ensures the service life of the piers.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model is suitable for a prefabricated installation of complex construction pier, especially Y shape pier, preparation and installation procedure are simple and convenient, and reduction construction period reduces the influence to urban road traffic, and the shear resistance is effectual. The utility model divides the complex bridge pier into a plurality of sections for separate prefabrication, so that the transportation and erection have the advantage of light weight, the dependence of construction on large-scale mechanical equipment can be reduced, and the influence of construction operation on urban road traffic is reduced; the pier bent cap and the pier body are connected by adopting a dry joint, only the epoxy resin adhesive is coated, the installation is convenient and rapid, the construction period can be shortened, and the pier bent cap has good waterproof performance and ensures the service life of the pier; each segmental pier is provided with a prestressed pipeline, so that a U-shaped pipeline which is convenient for the prestressed tendons to pass through is formed after the prestressed pipelines form a complete pier, the technical defect that a dry joint cannot be pulled can be overcome by tensioning the prestressed tendons, and meanwhile, the shearing resistance of the joint can be improved; adopt shear force key-type connection between the segmentation pier to play the effect of shear force, wherein convex key sets up to the terrace with edge shape, and concave key matches rather than the shape, both for the seam provides sufficient ability of shearing, the terrace with edge inclined plane can play the effect of guide installation before each segmentation pier installation again, plays the effect of accurate positioning when the installation, makes each pier can install more rapidly and target in place, simple to operate is swift.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a plan view of the half pier top of the pier body.

Fig. 3 is an installation schematic diagram of the present invention.

The bridge comprises 1-Y-shaped bridge piers, 11-bridge pier capping beams, 12-bridge pier bodies, 2-shear keys, 21-concave keys, 22-convex keys, 3-prestressed pipelines, 4-prestressed tendons and 5-supporting base stones.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below clearly and completely in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be further described with reference to the following specific examples, which should not be construed as limiting the invention.

The prefabricated Y-shaped pier shown in the figure is characterized in that: include the Y shape pier 1 that forms by the prefabricated segmentation pier of a plurality of sections connects gradually, set up in the spacing connection of a plurality of shear force keys 2 of the two seam through the interval between the adjacent segmentation pier, shear force key 2 is including the concave key 21 and the convex key 22 of mutually supporting, convex key 22 is the terrace with edge shape, concave key 21 is the recess that shape and convex key 22 match, a plurality of sections segmentation pier still includes the prestressing force pipeline 3 of reserving, 3 concatenation formation of prestressing force pipeline behind a plurality of sections segmentation pier connection holds the U type pipeline that prestressing tendons 4 passed.

Preferably, the segmented pier comprises two segments, namely a pier capping beam 11 and a pier body 12, the pier body 12 is of a Y-shaped structure, a concave key 21 is arranged on a joint surface at the bottom of the pier capping beam 11, a convex key 22 is arranged on a joint surface at the top of the pier body 12, the bottom of the U-shaped pipeline bypasses the two branches of the pier body 11, and the opening end of the U-shaped pipeline is flush with the top surface of the pier capping beam 11. The pier capping beam can adopt a prestressed concrete structure or a reinforced concrete structure according to the calculation requirement. The U-shaped pipeline is convenient for tensioning the prestressed tendons, is suitable for piers with complex structures, is particularly suitable for Y-shaped piers, can solve the problem that dry joints cannot be tensioned through tensioning the prestressed tendons, and can improve the shearing resistance of the joints.

Preferably, a plurality of supporting pads 5 are arranged on the top surface of the Y-shaped pier 1.

Preferably, the joints between the segment piers are fixed by bonding with an epoxy resin adhesive. The dry joint is adopted between the segmented piers, and only the epoxy resin adhesive is coated, so that the installation is convenient and rapid, the installation procedure is simplified, the construction period can be shortened, the influence on urban road traffic is reduced, and the epoxy resin adhesive has good waterproof performance, can play a role in waterproofing in a humid environment, and ensures the service life of the piers.

The utility model divides the complex bridge pier into a plurality of sections for separate prefabrication, so that the transportation and erection have the advantage of light weight, the dependence of construction on large-scale mechanical equipment can be reduced, and the influence of construction operation on urban road traffic is reduced; the pier bent cap and the pier body are connected by adopting a dry joint, only the epoxy resin adhesive is coated, the installation is convenient and rapid, the construction period can be shortened, and the pier bent cap has good waterproof performance and ensures the service life of the pier; each segmental pier is provided with a prestressed pipeline, so that a U-shaped pipeline which is convenient for the prestressed tendons to pass through is formed after the prestressed pipelines form a complete pier, the technical defect that a dry joint cannot be pulled can be overcome by tensioning the prestressed tendons, and meanwhile, the shearing resistance of the joint can be improved; adopt shear force key-type connection between the segmentation pier to play the effect of shear force, wherein convex key sets up to the terrace with edge shape, and concave key matches rather than the shape, both for the seam provides sufficient ability of shearing, the terrace with edge inclined plane can play the effect of guide installation before each segmentation pier installation again, plays the effect of accurate positioning when the installation, makes each pier can install more rapidly and target in place, simple to operate is swift. The utility model is suitable for a prefabricated installation of complex construction pier, especially Y shape pier, preparation and installation procedure are simple and convenient, shorten construction period, reduce the influence to urban road traffic, and the shear resistance is effectual.

The utility model discloses the installation step does: 1) The pier body 12 is installed in place, and the pier body 12 is connected with a bearing platform in a cast-in-place concrete mode, a grouting sleeve mode and the like; 2) Hoisting the pier capping beam 11 to the pier top of the pier body 12, and coating an epoxy resin adhesive on the two sides of the joint surface; 3) The concave keys 21 and the convex keys 22 are aligned and then are spliced; 4) And (4) reeving, namely tensioning the prestressed tendons 4 at the pier top of the pier capping beam 11 to pre-press the dry joint, so that the whole section is pressed, the shearing resistance of the joint is further enhanced, and the durability of the joint is improved.

The above is merely a preferred embodiment of the present invention, and not intended to limit the scope and the range of the present invention, and those skilled in the art should be able to realize that all the equivalent substitutions and obvious changes made by the present invention description should be included in the scope of the present invention.

Claims

1. The utility model provides a prefabricated Y shape pier which characterized in that: include Y shape pier (1) that is connected gradually the formation by the prefabricated segmentation pier of a plurality of sections, adjacent section set up in a plurality of shear force key (2) spacing connection of the two seam through the interval between the segmentation pier, shear force key (2) are including concave key (21) and convex key (22) of mutually supporting, convex key (22) are the terrace with edge shape, concave key (21) are the recess that shape and convex key (22) match, a plurality of sections the segmentation pier is still including the prestressing force pipeline (3) of reserving, a plurality of sections after the segmentation pier is connected prestressing force pipeline (3) concatenation forms the U type pipeline that holds prestressing force muscle (4) and pass.

2. The prefabricated Y-shaped pier of claim 1, wherein: the segmentation pier comprises two sections, is pier bent cap (11) and pier shaft (12) respectively, pier shaft (12) are Y shape structure, the joint face of pier bent cap (11) bottom sets up concave key (21), the joint face at pier shaft (12) top sets up convex key (22), two branches and its open end and pier bent cap (11) top surface of pier shaft (12) are walked around to the bottom of U type pipeline flush.

3. The prefabricated Y-shaped pier according to claim 1 or 2, wherein: and a plurality of supporting cushion stones (5) are arranged on the top surface of the Y-shaped pier (1).

4. The prefabricated Y-shaped pier according to claim 1 or 2, wherein: and joints among the segmented piers are bonded and fixed through epoxy resin adhesive.