CN211200042U - RUHPC-NC combined bridge pier - Google Patents
RUHPC-NC combined bridge pier Download PDFInfo
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- CN211200042U CN211200042U CN201921583053.5U CN201921583053U CN211200042U CN 211200042 U CN211200042 U CN 211200042U CN 201921583053 U CN201921583053 U CN 201921583053U CN 211200042 U CN211200042 U CN 211200042U
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Abstract
The utility model belongs to the technical field of bridge engineering, in particular to a RUHPC-NC combined bridge pier, which comprises a prefabricated bearing platform and a plurality of prefabricated bridge pier outer cylinders; compared with the traditional bridge pier construction of the sea-crossing bridge, the steel formwork construction is adopted, so that a large amount of steel can be saved; the outer cylinder of the prefabricated bridge pier is made of UHPC, the inner core is made of common concrete, and the bridge pier is made of marine concrete in comparison with the whole section of the bridge pier of the traditional sea-crossing bridge, so that the cost is much lower, and the economic benefit is remarkable; this technical scheme has higher construction safety degree.
Description
Technical Field
The utility model relates to a bridge engineering technical field, concretely relates to RUHPC-NC makes up pier.
Background
The bridge pier construction method of the sea-crossing bridge (or river-crossing bridge) mainly comprises two methods: the construction method adopts the steel as the integral cast-in-place construction method of the template and the construction method of prefabricating the whole section and assembling on site. Because the number of the bridge piers of the sea-crossing bridge is generally more, when cast-in-place construction is adopted, the number of the steel templates is huge, the steel templates are in an ocean extreme environment, the corrosion speed of the steel templates is high, and the turnover and reuse times are few. The construction method of full-section prefabrication and assembly needs large-scale hoisting equipment, transportation equipment and prefabrication sites, and the connection of components needs measures such as prestress and the like. Both construction methods have the defects of difficult construction, high cost, low work efficiency and the like.
The marine environment of the cross-sea bridge has strong corrosivity, so that the pier usually adopts marine concrete in a full section, the material cost is increased, the effect of adopting the marine concrete in the pier is not large, the corrosion resistance of the marine concrete on the outer layer is not enough to resist the corrosion of seawater, so that some cross-sea bridges still have serious corrosion problems, and the structural safety and the service life of the bridge are influenced.
The invention patent with the publication number of CN 109208463A discloses a prefabricated segment assembled pier with a bottom segment in a component combination form, which comprises a bearing platform, a small-diameter pier column, a hollow segment pier body, prestressed ribs and a plurality of solid pier bodies; the cushion cap is fixed, and minor diameter pier stud lower extreme is fixed with the cushion cap, and hollow section pier shaft sets up and is fixed with the minor diameter pier stud along minor diameter pier stud circumference, and the solid pier shaft of lower extreme sets up in minor diameter pier stud, hollow section pier shaft top, and the solid pier shaft in top sets up in the solid pier shaft top in below, and prestressing tendons passes solid pier shaft, hollow section pier shaft respectively along the axial and is fixed in on the cushion cap or passes solid pier shaft, minor diameter pier stud respectively and is fixed in on the cushion cap. Although the compression resistance and the tensile resistance of the joints of the prefabricated pier segments are enhanced by adopting the connecting structure and the construction method of the prefabricated pier segments for assembling the pier, the durability requirements under severe and extreme environmental conditions such as the ocean cannot be met, and a large amount of steel is used, so that the cost is not reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to solve the technical problems that: the RUHPC-NC combined pier has good corrosion resistance, wear resistance and impermeability, does not need a large amount of steel and has higher use efficiency.
In order to solve the technical problem, the utility model discloses a technical scheme be: a RUHPC-NC combined bridge pier comprises a prefabricated bearing platform and a plurality of prefabricated bridge pier outer cylinders;
the prefabricated bearing platform is arranged on a foundation, a cylindrical bearing platform tenon is arranged in the center of the top of the prefabricated bearing platform, bearing platform tenon exposed reinforcing steel bars are uniformly arranged on the top of the bearing platform tenon, and a plurality of bearing platform exposed reinforcing steel bars are uniformly arranged on the top surface of the prefabricated bearing platform around the bearing platform tenon;
the outer prefabricated pier cylinder is in a hollow cylindrical shape and is vertically connected to the top surface of a bearing platform, a plurality of vertical steel bar holes are uniformly formed in the outer prefabricated pier cylinder, embedded steel sleeves are arranged at the bottoms of the steel bar holes, pier exposed steel bars are arranged in the steel bar holes, the lower ends of the pier exposed steel bars extend into the embedded steel sleeves, the upper ends of the pier exposed steel bars extend out of the top surface of the outer prefabricated pier cylinder, annular pier tenons are arranged at the tops of the inner walls of the outer prefabricated pier cylinder, and a plurality of vertical pier tenon exposed steel bars are uniformly penetrated through the pier tenons;
the prefabricated cushion cap is equipped with first glutinous layer that glues with the contact surface of prefabricated pier urceolus, it glues glutinous layer to be equipped with the second between prefabricated pier urceolus and the prefabricated pier urceolus, the cushion cap of prefabricated cushion cap exposes in the reinforcing bar stretches into pre-buried steel sleeve, pre-buried steel sleeve is filled there is the mortar, prefabricated pier urceolus intussuseption is filled with the concrete.
And the first adhesive layer and the second adhesive layer are both ultrahigh-performance mortar.
The embedded steel sleeve is provided with a grout outlet and a grout injection hole, the position of the grout outlet is close to the top of the embedded steel sleeve, and the position of the grout injection hole is close to the bottom of the embedded steel sleeve.
And a waterproof material layer is arranged on the outer side surface of the pier tenon.
And a waterproof material layer is arranged on the outer side surface of the tenon of the bearing platform.
The beneficial effects of the utility model reside in that:
(1) the prefabricated pier outer cylinder has good corrosion resistance, wear resistance and impermeability, can meet the durability requirement under severe extreme environmental conditions such as ocean, and in order to avoid the prefabricated pier outer cylinder of the upper segment from turning on one's side under the action of wind power, the pier tenon is arranged at the top of the prefabricated pier outer cylinder of the lower segment, and the prefabricated pier outer cylinder of the upper segment is restrained.
(2) The prefabricated pier outer cylinder is used as a permanent template, the template does not need to be dismantled, the construction efficiency is high, and the construction period can be shortened.
(3) Compared with the traditional bridge pier construction of the sea-crossing bridge, the steel formwork construction is adopted, so that a large amount of steel can be saved; the outer cylinder of the prefabricated bridge pier is made of UHPC, the inner core is made of common concrete, and compared with the bridge pier of the traditional sea-crossing bridge, the bridge pier has the advantages that the total section is made of marine concrete, the manufacturing cost is much lower, and the economic benefit is remarkable.
(4) This technical scheme has higher construction safety degree.
Drawings
Fig. 1 is a schematic structural view of a RUHPC-NC composite pier according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a prefabricated pier outer cylinder of a RUHPC-NC composite pier according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a prefabricated platform of the RUHPC-NC composite pier according to an embodiment of the present invention;
FIG. 4 is a view in the direction A-A of FIG. 1;
description of reference numerals:
1. prefabricating a bearing platform; 11. a pile cap tenon; 12. the tenon of the bearing platform exposes the steel bar; 13. exposed steel bars of the bearing platform;
2. prefabricating an outer cylinder of the pier; 21. embedding a steel sleeve; 211. a slurry outlet; 212. grouting holes; 22. exposed steel bars of the bridge pier; 23. tenons of piers; 24. exposing steel bars by tenons of piers;
3. a waterproof material layer.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1, 2, 3 and 4, an RUHPC-NC composite pier of the present invention includes a prefabricated bearing platform 1 and a plurality of prefabricated pier outer cylinders 2;
the prefabricated bearing platform 1 is arranged on a foundation, a cylindrical bearing platform tenon 11 is arranged in the center of the top of the prefabricated bearing platform 1, bearing platform tenon exposed reinforcing steel bars 12 are uniformly arranged at the top of the bearing platform tenon 11, and a plurality of bearing platform exposed reinforcing steel bars 13 are uniformly arranged on the top surface of the prefabricated bearing platform 1 around the bearing platform tenon 11;
the outer prefabricated pier cylinder 2 is in a hollow cylindrical shape and is vertically connected to the top surface of a bearing platform, a plurality of vertical steel bar holes are uniformly formed in the outer prefabricated pier cylinder 2, embedded steel sleeves 21 are arranged at the bottoms of the steel bar holes, pier exposed steel bars 22 are arranged in the steel bar holes, the lower ends of the pier exposed steel bars 22 extend into the embedded steel sleeves 21, the upper ends of the pier exposed steel bars 22 extend out of the top surface of the outer prefabricated pier cylinder 2, annular pier tenons 23 are arranged at the top of the inner wall of the outer prefabricated pier cylinder 2, and a plurality of vertical pier tenon exposed steel bars 24 are uniformly penetrated through the pier tenons 23;
prefabricated cushion cap 1 is equipped with the first glutinous layer that glues with the contact surface of prefabricated pier urceolus 2, be equipped with the second between prefabricated pier urceolus 2 and the prefabricated pier urceolus 2 and glue glutinous layer, the cushion cap of prefabricated cushion cap 1 exposes reinforcing bar 13 and stretches into in the pre-buried steel sleeve 21, pre-buried steel sleeve 21 is filled there is the mortar, the intussuseption of prefabricated pier urceolus 2 is filled with the concrete.
As can be seen from the above description, the utility model has the advantages that:
(1) the prefabricated pier outer cylinder has good corrosion resistance, wear resistance and impermeability, can meet the durability requirement under severe extreme environmental conditions such as ocean, and in order to avoid the prefabricated pier outer cylinder of the upper segment from turning on one's side under the action of wind power, the pier tenon is arranged at the top of the prefabricated pier outer cylinder of the lower segment, and the prefabricated pier outer cylinder of the upper segment is restrained.
(2) The prefabricated pier outer cylinder is used as a permanent template, the template does not need to be dismantled, the construction efficiency is high, and the construction period can be shortened.
(3) Compared with the traditional bridge pier construction of the sea-crossing bridge, the steel formwork construction is adopted, so that a large amount of steel can be saved; the outer cylinder of the prefabricated bridge pier is made of UHPC, the inner core is made of common concrete, and compared with the bridge pier of the traditional sea-crossing bridge, the bridge pier has the advantages that the total section is made of marine concrete, the manufacturing cost is much lower, and the economic benefit is remarkable.
(4) This technical scheme has higher construction safety degree.
Furthermore, the first sticky layer and the second sticky layer are both ultrahigh-performance mortar.
Further, the embedded steel sleeve 21 is provided with a grout outlet 211 and a grout injection hole 212, the position of the grout outlet 211 is close to the top of the embedded steel sleeve 21, and the position of the grout injection hole 212 is close to the bottom of the embedded steel sleeve 21.
Further, the outer side surface of the pier tenon 23 is provided with a waterproof material layer 3.
Further, the outer side surface of the bearing platform tenon 11 is provided with a waterproof material layer 3.
According to the above description, through the arrangement of the waterproof material layer, the seawater is prevented from permeating into the interior of the pier from the splicing seam.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, a first embodiment of the present invention is:
a RUHPC-NC combined bridge pier comprises a prefabricated bearing platform 1 and a plurality of prefabricated bridge pier outer cylinders 2;
the prefabricated bearing platform 1 is arranged on a foundation, a cylindrical bearing platform tenon 11 is arranged in the center of the top of the prefabricated bearing platform 1, bearing platform tenon exposed reinforcing steel bars 12 are uniformly arranged at the top of the bearing platform tenon 11, and a plurality of bearing platform exposed reinforcing steel bars 13 are uniformly arranged on the top surface of the prefabricated bearing platform 1 around the bearing platform tenon 11;
the outer prefabricated pier cylinder 2 is in a hollow cylindrical shape and is vertically connected to the top surface of a bearing platform, a plurality of vertical steel bar holes are uniformly formed in the outer prefabricated pier cylinder 2, embedded steel sleeves 21 are arranged at the bottoms of the steel bar holes, pier exposed steel bars 22 are arranged in the steel bar holes, the lower ends of the pier exposed steel bars 22 extend into the embedded steel sleeves 21, the upper ends of the pier exposed steel bars 22 extend out of the top surface of the outer prefabricated pier cylinder 2, annular pier tenons 23 are arranged at the top of the inner wall of the outer prefabricated pier cylinder 2, and a plurality of vertical pier tenon exposed steel bars 24 are uniformly penetrated through the pier tenons 23;
ultrahigh-performance mortar is arranged on the contact surface of the prefabricated bearing platform 1 and the prefabricated pier outer cylinder 2, the ultrahigh-performance mortar is arranged between the prefabricated pier outer cylinder 2 and the prefabricated pier outer cylinder 2, a bearing platform exposed steel bar 13 of the prefabricated bearing platform 1 extends into an embedded steel sleeve 21, the embedded steel sleeve 21 is filled with the mortar, and the prefabricated pier outer cylinder 2 is filled with concrete;
the embedded steel sleeve 21 is provided with a grout outlet 211 and a grouting hole 212, the position of the grout outlet 211 is close to the top of the embedded steel sleeve 21, and the position of the grouting hole 212 is close to the bottom of the embedded steel sleeve 21;
the outer side surface of the pier tenon 23 is provided with a waterproof material layer 3;
and a waterproof material layer 3 is arranged on the outer side surface of the pile cap tenon 11.
To sum up, the utility model provides a RUHPC-NC combination pier, prefabricated pier urceolus have good corrosion-resistant, wearability and impermeability, can satisfy the durability requirement under the abominable extreme environmental conditions such as ocean, in order to avoid the prefabricated pier urceolus of upper segment to turn on one's side under the effect of wind-force, set up the pier tenon at the prefabricated pier urceolus top of lower segment, retrain the prefabricated pier urceolus of upper segment; the outer cylinder of the prefabricated bridge pier is used as a permanent template, the template does not need to be dismantled, the construction efficiency is high, and the construction period can be shortened; compared with the traditional bridge pier construction of the sea-crossing bridge, the steel formwork construction is adopted, so that a large amount of steel can be saved; the outer cylinder of the prefabricated bridge pier is made of UHPC, the inner core is made of common concrete, and the bridge pier is made of marine concrete in comparison with the whole section of the bridge pier of the traditional sea-crossing bridge, so that the cost is much lower, and the economic benefit is remarkable; this technical scheme has higher construction safety degree.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (5)
1. A RUHPC-NC combined bridge pier is characterized by comprising a prefabricated bearing platform and a plurality of prefabricated bridge pier outer cylinders;
the prefabricated bearing platform is arranged on a foundation, a cylindrical bearing platform tenon is arranged in the center of the top of the prefabricated bearing platform, bearing platform tenon exposed reinforcing steel bars are uniformly arranged on the top of the bearing platform tenon, and a plurality of bearing platform exposed reinforcing steel bars are uniformly arranged on the top surface of the prefabricated bearing platform around the bearing platform tenon;
the outer prefabricated pier cylinder is in a hollow cylindrical shape and is vertically connected to the top surface of a bearing platform, a plurality of vertical steel bar holes are uniformly formed in the outer prefabricated pier cylinder, embedded steel sleeves are arranged at the bottoms of the steel bar holes, pier exposed steel bars are arranged in the steel bar holes, the lower ends of the pier exposed steel bars extend into the embedded steel sleeves, the upper ends of the pier exposed steel bars extend out of the top surface of the outer prefabricated pier cylinder, annular pier tenons are arranged at the tops of the inner walls of the outer prefabricated pier cylinder, and a plurality of vertical pier tenon exposed steel bars are uniformly penetrated through the pier tenons;
the prefabricated cushion cap is equipped with first glutinous layer that glues with the contact surface of prefabricated pier urceolus, it glues glutinous layer to be equipped with the second between prefabricated pier urceolus and the prefabricated pier urceolus, the cushion cap of prefabricated cushion cap exposes in the reinforcing bar stretches into pre-buried steel sleeve, pre-buried steel sleeve is filled there is the mortar, prefabricated pier urceolus intussuseption is filled with the concrete.
2. The RUHPC-NC composite pier of claim 1, wherein the first and second adhesion layers are each ultra-high performance mortar.
3. The RUHPC-NC composite pier of claim 1, wherein the embedded steel sleeve is provided with a grout outlet and a grout injection hole, the grout outlet is positioned close to the top of the embedded steel sleeve, and the grout injection hole is positioned close to the bottom of the embedded steel sleeve.
4. The RUHPC-NC composite pier of claim 1, wherein the outer side surface of the pier tenon is provided with a waterproof material layer.
5. The RUHPC-NC composite pier of claim 1, wherein the outer side surface of the platform tenon is provided with a waterproof material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921583053.5U CN211200042U (en) | 2019-09-23 | 2019-09-23 | RUHPC-NC combined bridge pier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921583053.5U CN211200042U (en) | 2019-09-23 | 2019-09-23 | RUHPC-NC combined bridge pier |
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| CN211200042U true CN211200042U (en) | 2020-08-07 |
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| CN201921583053.5U Active CN211200042U (en) | 2019-09-23 | 2019-09-23 | RUHPC-NC combined bridge pier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685216A (en) * | 2019-09-23 | 2020-01-14 | 福建工程学院 | RUHPC-NC combined bridge pier and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685216A (en) * | 2019-09-23 | 2020-01-14 | 福建工程学院 | RUHPC-NC combined bridge pier and construction method thereof |
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