CN212375697U - Prefabricated box pier of assembling - Google Patents
Prefabricated box pier of assembling Download PDFInfo
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- CN212375697U CN212375697U CN202020276097.XU CN202020276097U CN212375697U CN 212375697 U CN212375697 U CN 212375697U CN 202020276097 U CN202020276097 U CN 202020276097U CN 212375697 U CN212375697 U CN 212375697U
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Abstract
The utility model relates to the technical field of building engineering, in particular to a prefabricated assembled box pier, which comprises a prefabricated bearing platform, and a lower prefabricated segment and an upper prefabricated segment which are vertically spliced and arranged on the top surface of the prefabricated bearing platform; according to the prefabricated assembled box type pier, the embedded lower-segment hollow steel pipe and the bearing platform hollow steel pipe can play a role in restraining the lower prefabricated segment, the lower prefabricated segment can be prevented from inclining laterally, and the construction safety degree is high; the pre-embedded lower section hollow steel pipe and the bearing platform hollow steel pipe penetrate through the splicing seam, and the post-cast concrete integrates the upper section and the lower section, so that the integrity and the shearing resistance of the spliced pier are improved; prestressed reinforcements are uniformly distributed on the periphery of the structure and penetrate through the whole structure of the prefabricated assembled box type pier, so that the integral anti-cracking capacity and the self-resetting capacity are improved; the structure has good corrosion resistance, impermeability and shock resistance.
Description
Technical Field
The utility model relates to a building engineering technical field, concretely relates to box pier is assembled in prefabrication.
Background
The construction methods commonly used for the bridge piers of the sea-crossing bridge (or river-crossing bridge) mainly include two types: 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. The box pier is assembled in prefabrication is often used for the bridge of striding the sea, and box pier concatenation seam department is assembled in prefabrication among the prior art often adopts following measure: (1) adopting prestressed thick steel bars to penetrate through the splicing seams so as to strengthen the connection between the prefabricated sections; (2) common steel bars among the prefabricated sections are generally not connected at splicing seams; (3) and the shearing resistance of the splicing seam is enhanced by adopting the concave-convex shear keys.
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.
The above construction suffers from several disadvantages: (1) ocean atmosphere is easy to invade the splicing seams, has stronger corrosion effect on the prestressed reinforcement and influences the durability of the bridge pier; (2) common steel bars among the prefabricated sections are not connected, so that the strength of the splicing section is reduced, and the splicing seam becomes a weak link of the spliced pier; (3) unsmooth shear force key concatenation precision requirement is high, and the recess is shallow, assembles the pier under the earthquake effect, takes place relative slippage dislocation easily between the prefabricated segment.
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 prefabricated assembled box type pier has good corrosion resistance and impermeability and is more stable in structure.
In order to solve the technical problem, the utility model discloses a technical scheme be: a prefabricated assembled box type pier comprises a prefabricated bearing platform, and a lower prefabricated section and an upper prefabricated section which are arranged on the top surface of the prefabricated bearing platform and are vertically spliced;
the top of the prefabricated bearing platform is provided with a bearing platform hollow steel pipe and a bearing platform prefabricated steel bar;
the bottom of the lower prefabricated section is provided with a lower section communicated grouting sleeve and a lower section groove, the top of the lower prefabricated section is provided with a lower section hollow steel pipe, and lower section prefabricated steel bars penetrate through the lower prefabricated section;
an upper-section communicated grouting sleeve and an upper-section groove are arranged at the bottom of the upper prefabricated section, and upper-section prefabricated steel bars penetrate through the upper prefabricated section;
the bearing platform hollow steel pipe is arranged in the lower section groove in a matched and penetrating mode, and the lower section hollow steel pipe is arranged in the upper section groove in a matched and penetrating mode;
the top end of the bearing platform prefabricated steel bar penetrates through the lower section communicated grouting sleeve, and the top end of the lower section prefabricated steel bar penetrates through the upper section communicated grouting sleeve.
The prefabricated bearing platform is arranged on a foundation, a plurality of groups of bearing platform assembling structures are arranged at the top of the prefabricated bearing platform, each bearing platform assembling structure comprises a bearing platform hollow steel pipe, bearing platform preformed holes and bearing platform prefabricated steel bars, the bearing platform prefabricated steel bars are vertically arranged around the bearing platform hollow steel pipes, the bearing platform preformed holes are formed in the prefabricated bearing platform surface at the center of the bearing platform hollow steel pipe, fixed end anchors are arranged at the bottom of the bearing platform preformed holes, the prefabricated bearing platform and the contact surface of the lower prefabricated section are provided with ultrahigh-performance mortar layers, and the contact surfaces of the lower prefabricated section and the upper prefabricated section are provided with ultrahigh-performance mortar layers.
The prefabricated pile cap comprises a prefabricated pile cap, a prefabricated pile cap and a prefabricated pile cap, wherein the prefabricated pile cap is provided with a plurality of prefabricated pile cap grooves and a prefabricated pile cap groove, the;
the upper prefabricated section is vertically connected to the top surface of the lower prefabricated section, a plurality of upper section grooves and upper section communicated grouting sleeves are arranged at the bottom of the upper prefabricated section, the upper section grooves are matched with the lower section hollow steel pipes, grooves matched with the upper section communicated grouting sleeves are formed in the top surface of the lower prefabricated section, a plurality of upper section reinforcing steel bars are vertically arranged on the periphery of the upper section grooves, the bottom ends of the upper section reinforcing steel bars are located in the upper section communicated grouting sleeves, the upper section reinforcing steel bars correspond to the lower section reinforcing steel bars one to one, anchoring grooves are formed in the top of the upper prefabricated section, upper section metal corrugated pipes are vertically arranged in the anchoring grooves, and the upper section metal corrugated pipes are communicated with the anchoring grooves and the upper section grooves.
The prestressed reinforcement is arranged in the upper-section metal corrugated pipe and the lower-section metal corrugated pipe in a penetrating mode, the top end of the prestressed reinforcement is located in the anchoring groove and fixed through an anchorage device, the bottom end of the prestressed reinforcement is fixed through a fixed-end anchorage device of the prefabricated bearing platform, and ultrahigh-performance mortar is filled between the upper-section metal corrugated pipe and the prestressed reinforcement, between the lower-section metal corrugated pipe and the prestressed reinforcement, in the lower-section hollow steel pipe and in the bearing platform hollow steel pipe.
And through holes are formed in the side wall of the lower section hollow steel pipe and the side wall of the bearing platform hollow steel pipe.
The grouting sleeve comprises an upper section communicated grouting sleeve body and a lower section communicated grouting sleeve body, wherein the upper section communicated grouting sleeve body and the lower section communicated grouting sleeve body are respectively provided with a grouting opening and a grout outlet, the grout outlet is located above the grouting opening, and ultrahigh-performance mortar is filled in the upper section communicated grouting sleeve body and the lower section communicated grouting sleeve body.
Wherein, go up prefabricated section inside and prefabricated section inside down and all be provided with the stirrup.
And a steel bar connector is arranged in the lower section hollow steel pipe.
The beneficial effects of the utility model reside in that: the prefabricated assembled box pier provided by the utility model has the advantages that the embedded lower section hollow steel pipe and the bearing platform hollow steel pipe can play the role of restraining the lower prefabricated section, the lower prefabricated section can be prevented from tilting, and the construction safety degree is high; the pre-embedded lower section hollow steel pipe and the bearing platform hollow steel pipe penetrate through the splicing seam, and the post-cast concrete integrates the upper section and the lower section, so that the integrity and the shearing resistance of the spliced pier are improved; prestressed reinforcements are uniformly distributed on the periphery of the structure and penetrate through the whole structure of the prefabricated assembled box type pier, so that the integral anti-cracking capacity and the self-resetting capacity are improved; the reinforcing steel bars penetrating through the splicing seams are wrapped by grouting material, so that corrosion is avoided, and the durability is good; the utility model discloses the structure has good corrosion-resistant, impermeability and shock resistance.
Drawings
FIG. 1 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 2 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 3 is a cross-sectional view of C-C of FIG. 1;
FIG. 4 is a cross-sectional view taken along line D-D of FIG. 1;
description of reference numerals:
1. prefabricating a bearing platform; 11. a bearing platform hollow steel pipe; 12. reserving holes on the bearing platform; 121. a fixed end anchorage device; 13. prefabricating steel bars on the bearing platform;
2. lower prefabricated segments; 21. a lower segment groove; 22. a lower segment communicating grouting sleeve; 23. a lower section of reinforcement; 24. a lower section hollow steel pipe; 25. a lower section metal bellows;
3. an upper prefabricated segment; 31. an upper segment groove; 32. the upper section is communicated with a grouting sleeve; 33. upper section steel bars; 34. an anchoring groove; 35. an upper section metal bellows;
4. pre-stressing the steel bars;
5. an anchorage device;
6. a grouting port;
7. a pulp outlet;
8. hooping;
9. a steel bar connector.
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 to 4, the prefabricated assembled box pier of the present invention comprises a prefabricated bearing platform 1, and a lower prefabricated section 2 and an upper prefabricated section 3 which are vertically assembled and arranged on the top surface of the prefabricated bearing platform 1;
the top of the prefabricated bearing platform 1 is provided with a bearing platform hollow steel pipe 11 and a bearing platform prefabricated steel bar 13;
the bottom of the lower prefabricated section 2 is provided with a lower section communicated grouting sleeve 22 and a lower section groove 21, the top of the lower prefabricated section 2 is provided with a lower section hollow steel pipe 24, and a lower section steel bar 23 penetrates through the lower prefabricated section 2;
an upper-section communicated grouting sleeve 32 and an upper-section groove 31 are arranged at the bottom of the upper prefabricated section 3, and an upper-section steel bar 33 penetrates through the upper prefabricated section 3;
the bearing platform hollow steel pipe 11 is arranged in the lower section groove 21 in a matched and penetrating mode, and the lower section hollow steel pipe 24 is arranged in the upper section groove 31 in a matched and penetrating mode;
the top end of the bearing platform prefabricated steel bar 13 penetrates through the lower section communicated grouting sleeve 22, and the top end of the lower section steel bar 23 penetrates through the upper section communicated grouting sleeve 32.
As can be seen from the above description, the utility model has the advantages that: the prefabricated assembled box pier provided by the utility model has the advantages that the embedded lower section hollow steel pipe and the bearing platform hollow steel pipe can play the role of restraining the lower prefabricated section, the lower prefabricated section can be prevented from tilting, and the construction safety degree is high; the pre-embedded lower section hollow steel pipe and the bearing platform hollow steel pipe penetrate through the splicing seam, and the post-cast concrete integrates the upper section and the lower section, so that the integrity and the shearing resistance of the spliced pier are improved; prestressed reinforcements are uniformly distributed on the periphery of the structure and penetrate through the whole structure of the prefabricated assembled box type pier, so that the integral anti-cracking capacity and the self-resetting capacity are improved; the utility model discloses the structure has good corrosion-resistant, impermeability and shock resistance.
Further, prefabricated cushion cap 1 sets up on the ground, the top of prefabricated cushion cap 1 is equipped with multiunit cushion cap and assembles the structure, cushion cap is assembled the structure and is included cushion cap hollow steel pipe 11, cushion cap preformed hole 12 and cushion cap prefabricated reinforcing bar 13, cushion cap prefabricated reinforcing bar 13 is vertical to be set up around cushion cap hollow steel pipe 11, cushion cap preformed hole 12 sets up on the prefabricated cushion cap 1 face at cushion cap hollow steel pipe 11 center, the bottom of cushion cap preformed hole 12 is provided with stiff end ground tackle 121, prefabricated cushion cap 1 is provided with the super high performance mortar layer with the contact surface of prefabricated section 2 down, prefabricated section 2 is provided with the super high performance mortar layer with the contact surface of last prefabricated section 3 down.
According to the description, the splicing seams are filled with the ultrahigh-performance mortar, so that the integrity and the impermeability of the pier structure can be ensured.
Further, the lower prefabricated segment 2 is vertically connected to the top surface of the prefabricated bearing platform 1, the bottom of the lower prefabricated segment 2 is provided with a plurality of lower segment grooves 21 and lower segment communication type grouting sleeves 22, the lower section groove 21 is matched with the bearing platform hollow steel pipe 11, the top surface of the prefabricated bearing platform is provided with a groove matched with a lower section communicating grouting sleeve, a plurality of lower-section steel bars 23 are vertically arranged around the lower-section groove 21, the top ends of the lower-section steel bars 23 penetrate through the top surface of the lower prefabricated section 2, the bottom end of the lower prefabricated section 2 is positioned in a lower section communicating grouting sleeve 22, a lower section hollow steel pipe 24 is arranged at the top of the lower prefabricated section, a lower section metal corrugated pipe 25 is vertically arranged in the lower section hollow steel pipe 24, and the lower section metal corrugated pipe 25 is communicated with the lower section hollow steel pipe 24 and the lower section groove 21.
Further, the upper prefabricated section 3 is vertically connected to the top surface of the lower prefabricated section, the bottom of the upper prefabricated section 3 is provided with a plurality of upper section grooves 31 and upper section communicating grouting sleeves 32, the upper section grooves 31 are matched with the lower section hollow steel pipes 24, the top surface of the lower prefabricated section is provided with grooves matched with the upper section communicating grouting sleeves, a plurality of upper section reinforcing steel bars 33 are vertically arranged around the upper section grooves 31, the bottom ends of the upper section reinforcing steel bars 33 are located in the upper section communicating grouting sleeves 32, the upper section reinforcing steel bars 33 are in one-to-one correspondence with the lower section reinforcing steel bars 23, the top of the upper prefabricated section 3 is provided with an anchoring groove 34, an upper section metal corrugated pipe 35 is vertically arranged in the anchoring groove 34, and the upper section metal corrugated pipe 35 is communicated with the anchoring groove 34 and the upper section grooves 31.
Furthermore, prestressed steel bars 4 penetrate through the upper section metal corrugated pipe 35 and the lower section metal corrugated pipe 25, the top ends of the prestressed steel bars 4 are located in the anchoring grooves 34 and fixed by the anchorage devices 5, the bottom ends of the prestressed steel bars 4 are fixed by the fixed-end anchorage devices 121 of the prefabricated bearing platform 1, and ultrahigh-performance mortar is filled between the upper section metal corrugated pipe 35 and the prestressed steel bars 4, between the lower section metal corrugated pipe 25 and the prestressed steel bars 4, in the lower section hollow steel pipe 24 and in the bearing platform hollow steel pipe 11.
Further, the side wall of the lower section hollow steel pipe 24 and the side wall of the bearing platform hollow steel pipe 11 are both provided with through holes.
According to the description, the side wall of the exposed part of the hollow line steel pipe is perforated, so that the gap between the hollow steel pipes is filled with the ultrahigh-performance mortar, and the adhesion between the ultrahigh-performance mortar and the steel pipes is enhanced.
Further, the upper-section communicated grouting sleeve 32 and the lower-section communicated grouting sleeve 22 are both provided with a grouting opening 6 and a grout outlet 7, the grout outlet 7 is located above the grouting opening 6, and ultrahigh-performance mortar is filled in the upper-section communicated grouting sleeve 32 and the lower-section communicated grouting sleeve 22.
Furthermore, stirrups 8 are arranged inside the upper prefabricated section 3 and inside the lower prefabricated section 2.
Further, a steel bar connector 9 is arranged in the lower section hollow steel pipe 24.
According to the above description, by using the steel bar connector, the prestressed steel bars can be tensioned and fixed after being assembled at the current prefabrication stage, and the pretightening force of the prestressed steel bars is ensured.
Referring to fig. 1 to 4, a first embodiment of the present invention is:
a prefabricated assembled box type pier comprises a prefabricated bearing platform 1, and a lower prefabricated section 2 and an upper prefabricated section 3 which are arranged on the top surface of the prefabricated bearing platform 1 and are vertically spliced;
the top of the prefabricated bearing platform 1 is provided with a bearing platform hollow steel pipe 11 and a bearing platform prefabricated steel bar 13;
the bottom of the lower prefabricated section 2 is provided with a lower section communicated grouting sleeve 22 and a lower section groove 21, the top of the lower prefabricated section 2 is provided with a lower section hollow steel pipe 24, and a lower section steel bar 23 penetrates through the lower prefabricated section 2;
an upper-section communicated grouting sleeve 32 and an upper-section groove 31 are arranged at the bottom of the upper prefabricated section 3, and an upper-section steel bar 33 penetrates through the upper prefabricated section 3;
the bearing platform hollow steel pipe 11 is arranged in the lower section groove 21 in a matched and penetrating mode, and the lower section hollow steel pipe 24 is arranged in the upper section groove 31 in a matched and penetrating mode;
the top ends of the bearing platform prefabricated steel bars 13 penetrate through the lower section communicated grouting sleeve 22, and the top ends of the lower section steel bars 23 penetrate through the upper section communicated grouting sleeve 32;
the prefabricated bearing platform 1 is arranged on a foundation, a plurality of groups of bearing platform assembling structures are arranged at the top of the prefabricated bearing platform 1, each bearing platform assembling structure comprises a bearing platform hollow steel pipe 11, a bearing platform preformed hole 12 and bearing platform prefabricated steel bars 13, the bearing platform prefabricated steel bars 13 are vertically arranged around the bearing platform hollow steel pipe 11, the bearing platform preformed holes 12 are arranged on the surface of the prefabricated bearing platform 1 in the center of the bearing platform hollow steel pipe 11, a fixed end anchorage device 121 is arranged at the bottom of the bearing platform preformed hole 12, an ultrahigh-performance mortar layer is arranged on the contact surface of the prefabricated bearing platform 1 and a lower prefabricated section 2, and ultrahigh-performance mortar layers are arranged on the contact surfaces of the lower prefabricated section 2 and an upper prefabricated section 3;
the lower prefabricated section 2 is vertically connected to the top surface of a prefabricated bearing platform 1, a plurality of lower section grooves 21 and lower section communication type grouting sleeves 22 are arranged at the bottom of the lower prefabricated section 2, the lower section grooves 21 are matched with the hollow steel pipes 11 of the bearing platform, grooves matched with the lower section communication type grouting sleeves are arranged on the top surface of the prefabricated bearing platform, a plurality of lower section steel bars 23 are vertically arranged on the periphery of the lower section grooves 21, the top ends of the lower section steel bars 23 penetrate through the top surface of the lower prefabricated section 2, the bottom ends of the lower section steel bars are located in the lower section communication type grouting sleeves 22, a lower section hollow steel pipe 24 is arranged at the top of the lower prefabricated section 2, a lower section metal corrugated pipe 25 is vertically arranged in the lower section hollow steel pipe 24, and the lower section metal corrugated pipe 25 is communicated with the lower section hollow steel pipe 24 and the lower;
the upper prefabricated section 3 is vertically connected to the top surface of the lower prefabricated section, a plurality of upper section grooves 31 and upper section communicating grouting sleeves 32 are arranged at the bottom of the upper prefabricated section 3, the upper section grooves 31 are matched with the lower section hollow steel pipes 24, grooves matched with the upper section communicating grouting sleeves are arranged at the top surface of the lower prefabricated section, a plurality of upper section reinforcing steel bars 33 are vertically arranged on the periphery of the upper section grooves 31, the bottom ends of the upper section reinforcing steel bars 33 are positioned in the upper section communicating grouting sleeves 32, the upper section reinforcing steel bars 33 correspond to the lower section reinforcing steel bars 23 one by one, anchoring grooves 34 are arranged at the top of the upper prefabricated section 3, upper section metal corrugated pipes 35 are vertically arranged in the anchoring grooves 34, and the upper section metal corrugated pipes 35 are communicated with the anchoring grooves 34 and the upper section grooves 31;
the side wall of the lower section hollow steel pipe 24 and the side wall of the bearing platform hollow steel pipe 11 are both provided with through holes;
the upper section communicated grouting sleeve 32 and the lower section communicated grouting sleeve 22 are both provided with a grouting opening 6 and a grout outlet 7, the grout outlet 7 is positioned above the grouting opening 6, and ultrahigh-performance mortar is filled in the upper section communicated grouting sleeve 32 and the lower section communicated grouting sleeve 22;
stirrups 8 are arranged inside the upper prefabricated section 3 and inside the lower prefabricated section 2;
and a steel bar connector 9 is arranged in the lower section hollow steel pipe 24.
To sum up, the lower segment hollow steel pipe and the bearing platform hollow steel pipe which are pre-embedded in the prefabricated assembled box pier provided by the utility model can play a role in restraining the lower prefabricated segment, so that the lower prefabricated segment can be prevented from tilting, and the construction safety degree is high; the pre-embedded lower section hollow steel pipe and the bearing platform hollow steel pipe penetrate through the splicing seam, and the post-cast concrete integrates the upper section and the lower section, so that the integrity and the shearing resistance of the spliced pier are improved; prestressed reinforcements are uniformly distributed on the periphery of the structure and penetrate through the whole structure of the prefabricated assembled box type pier, so that the integral anti-cracking capacity and the self-resetting capacity are improved; the novel structure has good corrosion resistance, impermeability and shock resistance;
the splicing seams are filled by the ultrahigh-performance mortar, so that the integrity and impermeability of the pier structure can be ensured;
punching holes on the side wall of the exposed part of the hollow steel tube to fill gaps between the hollow steel tubes with the ultrahigh-performance mortar and enhance the adhesion between the ultrahigh-performance mortar and the steel tubes;
through using the steel bar connector, the prestressed steel bars can be stretched and fixed after being assembled at the current prefabrication stage, and the pretightening force of the prestressed steel bars is ensured.
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 (9)
1. A prefabricated assembled box type pier is characterized by comprising a prefabricated bearing platform, and a lower prefabricated section and an upper prefabricated section which are arranged on the top surface of the prefabricated bearing platform and are vertically spliced;
the top of the prefabricated bearing platform is provided with a bearing platform hollow steel pipe and a bearing platform prefabricated steel bar;
the bottom of the lower prefabricated section is provided with a lower section communicated grouting sleeve and a lower section groove, the top of the lower prefabricated section is provided with a lower section hollow steel pipe, and lower section prefabricated steel bars penetrate through the lower prefabricated section;
an upper-section communicated grouting sleeve and an upper-section groove are arranged at the bottom of the upper prefabricated section, and upper-section prefabricated steel bars penetrate through the upper prefabricated section;
the bearing platform hollow steel pipe is arranged in the lower section groove in a matched and penetrating mode, and the lower section hollow steel pipe is arranged in the upper section groove in a matched and penetrating mode;
the top end of the bearing platform prefabricated steel bar penetrates through the lower section communicated grouting sleeve, and the top end of the lower section prefabricated steel bar penetrates through the upper section communicated grouting sleeve.
2. The prefabricated assembled box pier of claim 1, wherein the prefabricated bearing platforms are arranged on a foundation, a plurality of groups of bearing platform assembled structures are arranged at the tops of the prefabricated bearing platforms, each bearing platform assembled structure comprises a bearing platform hollow steel pipe, bearing platform preformed holes and bearing platform prefabricated steel bars, the bearing platform prefabricated steel bars are vertically arranged around the bearing platform hollow steel pipe, the bearing platform preformed holes are formed in the prefabricated bearing platform surface in the center of the bearing platform hollow steel pipe, fixed-end anchors are arranged at the bottoms of the bearing platform preformed holes, ultrahigh-performance mortar layers are arranged on the contact surfaces of the prefabricated bearing platforms and lower prefabricated sections, and ultrahigh-performance mortar layers are arranged on the contact surfaces of the lower prefabricated sections and upper prefabricated sections.
3. The prefabricated assembled box pier according to claim 2, wherein the lower prefabricated section is vertically connected to the top surface of a prefabricated bearing platform, a plurality of lower section grooves and lower section communicating grouting sleeves are arranged at the bottom of the lower prefabricated section, the lower section grooves are matched with the hollow steel pipes of the bearing platform, grooves matched with the lower section communicating grouting sleeves are arranged on the top surface of the prefabricated bearing platform, a plurality of lower section steel bars are vertically arranged around the lower section grooves, the top ends of the lower section steel bars penetrate through the top surface of the lower prefabricated section, the bottom ends of the lower section steel bars are located in the lower section communicating grouting sleeves, lower section metal corrugated pipes are vertically arranged in the lower section hollow steel pipes, and the lower section metal corrugated pipes are communicated with the lower section hollow steel pipes and the lower section grooves.
4. The prefabricated assembled box pier of claim 3, wherein the upper prefabricated section is vertically connected to the top surface of the lower prefabricated section, a plurality of upper section grooves and upper section communicated grouting sleeves are arranged at the bottom of the upper prefabricated section, the upper section grooves are matched with the lower section hollow steel pipes, grooves matched with the upper section communicated grouting sleeves are formed in the top surface of the lower prefabricated section, a plurality of upper section steel bars are vertically arranged on the periphery of the upper section grooves, the bottom ends of the upper section steel bars are located in the upper section communicated grouting sleeves, the upper section steel bars correspond to the lower section steel bars one to one, anchoring grooves are formed in the top of the upper prefabricated section, upper section metal corrugated pipes are vertically arranged in the anchoring grooves, and the upper section metal corrugated pipes are communicated with the anchoring grooves and the upper section grooves.
5. The prefabricated assembled box pier of claim 4, wherein prestressed reinforcements are arranged in the upper section of metal corrugated pipe and the lower section of metal corrugated pipe in a penetrating manner, the top ends of the prestressed reinforcements are positioned in the anchoring grooves and fixed by anchors, the bottom ends of the prestressed reinforcements are fixed by fixed end anchors of the prefabricated bearing platform, and ultrahigh-performance mortar is filled between the upper section of metal corrugated pipe and the prestressed reinforcements, between the lower section of metal corrugated pipe and the prestressed reinforcements, in the lower section of hollow steel pipe and in the bearing platform hollow steel pipe.
6. The prefabricated assembled box pier according to claim 5, wherein through holes are formed in the side wall of the lower section hollow steel pipe and the side wall of the bearing platform hollow steel pipe.
7. The prefabricated assembled box pier according to claim 6, wherein the upper section communicated grouting sleeve and the lower section communicated grouting sleeve are provided with grouting ports and grout outlets, the grout outlets are located above the grouting ports, and ultrahigh-performance mortar is filled in the upper section communicated grouting sleeve and the lower section communicated grouting sleeve.
8. The prefabricated assembled box pier of claim 7, wherein stirrups are arranged inside the upper prefabricated section and inside the lower prefabricated section.
9. The prefabricated assembled box pier of claim 8, wherein a steel bar connector is arranged in the lower section hollow steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020276097.XU CN212375697U (en) | 2020-03-09 | 2020-03-09 | Prefabricated box pier of assembling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020276097.XU CN212375697U (en) | 2020-03-09 | 2020-03-09 | Prefabricated box pier of assembling |
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| Publication Number | Publication Date |
|---|---|
| CN212375697U true CN212375697U (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020276097.XU Active CN212375697U (en) | 2020-03-09 | 2020-03-09 | Prefabricated box pier of assembling |
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| CN (1) | CN212375697U (en) |
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| GR01 | Patent grant |