CN212561132U - Prefabricated hollow pier of assembling of built-in floor in area - Google Patents

Prefabricated hollow pier of assembling of built-in floor in area Download PDF

Info

Publication number
CN212561132U
CN212561132U CN202021230556.7U CN202021230556U CN212561132U CN 212561132 U CN212561132 U CN 212561132U CN 202021230556 U CN202021230556 U CN 202021230556U CN 212561132 U CN212561132 U CN 212561132U
Authority
CN
China
Prior art keywords
steel bar
segment
built
pier
foundation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202021230556.7U
Other languages
Chinese (zh)
Inventor
孙树礼
苏伟
张帅
张雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Design Corp
China State Railway Group Co Ltd
Original Assignee
China Railway Design Corp
China State Railway Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway Design Corp, China State Railway Group Co Ltd filed Critical China Railway Design Corp
Priority to CN202021230556.7U priority Critical patent/CN212561132U/en
Application granted granted Critical
Publication of CN212561132U publication Critical patent/CN212561132U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model provides a hollow pier is assembled in prefabrication of taking built-in floor relates to the bridge construction field. The foundation comprises a foundation, a bottom section, a middle section and a top cap section from bottom to top in sequence, wherein embedded steel bars are arranged at the top of the foundation, and stirrups are arranged on the embedded steel bars; a solid body section is arranged below the bottom section, the bottom section and the solid body section are prefabricated together, a connecting steel bar hole is reserved in the solid body section, and the diameter size of the connecting steel bar hole is 5cm larger than that of each side of the embedded steel bar at the top of the foundation; post-cast concrete is filled in the pore channel of the embedded steel bar; ribbed plates are arranged on the bottom section, the middle section and the top cap section, each ribbed plate is provided with a connecting steel bar, each connecting steel bar extends out of the corresponding ribbed plate, and the connecting steel bars among the sections are mutually lapped by more than 10 times of the diameter of the steel bar; the prestressed pipelines are embedded in the foundation, the bottom section, the middle section and the top cap section, and are connected by penetrating through the full-length prestressed bundles, so that the defects of insufficient energy consumption and low ductility of the prestressed assembling pier can be overcome.

Description

Prefabricated hollow pier of assembling of built-in floor in area
Technical Field
The utility model relates to a bridge construction technical field especially relates to a hollow pier is assembled in prefabrication of in-band ribbed slab.
Background
At present, when the bridge pier spans large rivers or oceans, the construction conditions are severe, the wind waves are large, the effective field operation time is short, the concrete pouring and curing are difficult, the bridge pier is not suitable for cast-in-place construction, the industrial and spliced construction has great advantages, the field operation time is greatly shortened, and the engineering quality is improved; the pier can be divided into large segments, and is assembled by large mechanical equipment, so that the pier is suitable for a hollow pier with a high height; the method is applied to bridge engineering in some water areas or sea areas at home and abroad.
Hollow pier often highly higher, the cross sectional dimension is big, and ordinary reinforcing bar has been arranged to the mound wall inside and outside equipartition, when adopting the prefabrication to assemble the construction, connects the degree of difficulty greatly between the intensive reinforcing bar, consequently adopts prestressing force to connect often, paints epoxy glue between each festival section promptly, and the connection between the rethread prestressing tendons realizes the festival. The sections of the connection mode are connected only through the prestressed tendons, so that the defects of insufficient energy consumption capacity, low ductility and the like exist, and the connection mode is not suitable for high-earthquake areas; the corrosion performance is high on the sea, the requirement on the durability is high, the prestressed tendons have corrosion risks, if the corrosion is serious, the connection failure can be caused, the structural safety is influenced, and the prestressed tendons are located in the duct and are not easy to inspect, repair and replace; meanwhile, when the height of the hollow pier is high and the length of the section is long, the problems of overall stability of the pier column, local stability of the pier wall and the like exist.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hollow pier and construction method are assembled in prefabrication of taking built-in floor to alleviate the problem that exists among the above-mentioned prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a prefabricated hollow pier of assembling of in-band floor, from lower and last foundation, bottom segment, middle segment, hood segment that include in proper order, the foundation top sets up embedded bar, sets up the stirrup on the embedded bar, makes embedded bar have certain rigidity, guarantees that it is vertical; the embedded steel bars and the stirrups form a plurality of steel reinforcement cages which are dispersedly arranged on the foundation.
The utility model discloses a building foundation embedded steel bar, including base section, solid section, connecting reinforcement pore, the diameter size in base section below sets up solid section, and base section and solid section are prefabricated together, guarantee base section and solid section wholeness, reserve the connecting reinforcement pore on the solid section, and the diameter size in connecting reinforcement pore is 5cm bigger than every side of basic embedded steel bar, and it penetrates to be convenient for.
And post-pouring concrete, namely filling micro-expansion concrete or high-performance concrete in the embedded steel bar pore canal, anchoring the embedded steel bars, and realizing the connection between the entity section and the foundation.
The bottom segment, the middle segment and the top cap segment are all provided with ribbed plates, each ribbed plate is provided with a connecting steel bar, each connecting steel bar extends out of the corresponding ribbed plate for a certain length, the connecting steel bars among the segments are mutually lapped by more than 10 times of the diameter of the steel bar, UHPC is poured, and connection and force transmission among the connecting steel bars among the segments are realized.
The foundation, the bottom section, the middle section and the top cap section are all pre-embedded with prestressed pipelines and are connected by penetrating through long prestressed bundles, so that the connection performance among the sections is ensured; the prestressed tendon fixing end is arranged in the foundation and is connected through a self-locking anchorage device, the prestressed tendon is locked in the foundation after penetrating through the full-length prestressed tendon from the top end, and the tensioning end on the top end of the top cap segment is tensioned and anchored.
Furthermore, a plurality of rib plates are arranged on the inner sides of the pier walls of the bottom section, the middle section and the top cap section and are distributed along the periphery, and the plurality of rib plates and the sections are prefabricated together.
Furthermore, each rib plate is flush with the upper part of the connected segment, an expansion head is adopted at a certain position of the upper part of each rib plate, and the outer contour of the expansion head is larger than the size of the lower part of the rib plate of the connected segment.
Further, the cross-sectional dimension of the segment to be connected is shorter below the rib plate, and the slope form is set below the rib plate.
Furthermore, each connecting steel bar extends out of the rib plate of the connected segment, the connecting steel bars are arranged in a staggered mode, the connecting steel bar located on the upper segment is arranged in the middle of the connecting steel bar located on the lower segment, a hoop is bound after penetrating through the connecting steel bar, and the hoop is arranged on the periphery of the connecting steel bar located on the upper segment and the periphery of the connecting steel bar located on the lower segment.
Furthermore, each connecting steel bar extends out of a rib plate of the connected segment, the connecting steel bars are arranged inside and outside, and when the connecting steel bar at one side is arranged outside, stirrups are bound around the connecting steel bar when the corresponding segment is prefabricated; when one side connecting reinforcement arranged in the inboard, when corresponding section was prefabricated at connecting reinforcement ligature stirrup all around, during assembling penetrating inboard connecting reinforcement outside connecting reinforcement, the realization is connected.
Further, the connecting steel bars can extend from the rib plates of the adjacent sections and can also extend from the inner parts of the adjacent sections.
Furthermore, UHPC is adopted as a pouring material among the rib plates; UHPC is poured in the gaps between the rib plates and the upper and lower sections.
The utility model has the advantages that:
the utility model provides a hollow pier is assembled in prefabrication of in-band built-in floor has following effect:
1. by additionally arranging the connecting steel bars, the defects of insufficient energy consumption and low ductility of the prestressed splicing piers are overcome, and the prestressed splicing piers can be suitable for high-seismic areas; the connecting steel bars do not occupy the space of the pier wall, and the prestress on the pier wall is flexibly arranged and is simple and convenient to manufacture; the construction of the connecting steel bar is not influenced by the severe conditions of the external environment, the construction is facilitated, and the appearance of the structure is not influenced; the connecting steel bars are positioned in the structure, so that the durability is good, and the connecting steel bars are suitable for the erosion environment;
2. by combining the prestressed steel bundles and the connecting steel bars, the connection performance of the joint is obviously improved, the risks of corrosion, failure and the like of the prestressed steel bundles existing in pure prestressed connection are compensated, the number of required prestressed forces is reduced, and the procedures of prestressed beam penetrating, tensioning and the like are simplified;
3. the stability of the segments is improved by arranging the rib plates, the segment length of the pier column segments is increased, the number of joints is reduced, the overall stability of the pier and the local stability of the pier wall are improved, and the pier is particularly suitable for high piers in water areas or sea areas; when the cast-in-place construction of pier, receive influence such as inner formword creeping formwork, set up the floor and increase the construction degree of difficulty greatly, this scheme festival section adopts prefabricated construction, simple manufacture effectively solves the inconvenient problem of construction.
4. By using the UHPC between the segments as a structural shear key and not arranging the shear key on the pier wall, the special template arrangement during segment manufacturing is simplified, the cost is saved and the segment manufacturing progress is accelerated; and the accurate alignment of pier wall shear keys is not needed during assembly, so that the assembly speed is increased.
5. The connecting reinforcing bars pass through the UHPC overlap joint, and the reinforcing bar connection need not counterpoint one by one, and convenient construction, UHPC seam pouring volume is little, and is highly little, self-compaction, exempt from the vibration, construction convenience.
6. The sections can be temporarily locked by binding stirrups of connecting steel bars in the section assembling process, and the stability of the sections in the assembling process is ensured.
7. When the pier stud has navigation or anti-collision requirements, the solid section is arranged at the bottom of the pier, and the solid pier and the pier stud are prefabricated together and are reliably connected with the foundation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a vertical structure of a prefabricated assembled hollow pier with built-in rib plates provided by the utility model;
fig. 2 is a schematic view of the foundation structure of the prefabricated assembled hollow pier with the built-in rib plates provided by the utility model;
fig. 3 is a schematic structural view of a bottom section of the prefabricated assembled hollow pier with the built-in rib plates provided by the utility model;
fig. 4 is a schematic structural view of a middle section of the prefabricated assembled hollow pier with built-in rib plates provided by the utility model;
fig. 5 is a schematic structural view of a top cap segment of a prefabricated assembled hollow pier with built-in rib plates provided by the utility model;
fig. 6 is an assembly schematic diagram of an embodiment of a middle joint of a prefabricated assembled hollow pier with a built-in rib plate provided by the utility model;
fig. 7 is a schematic diagram of a second assembly of an embodiment of a middle joint of the prefabricated assembled hollow pier with the built-in rib plate provided by the utility model;
fig. 8 is a schematic diagram of a third assembly of an embodiment of a middle joint of a prefabricated assembled hollow pier with a built-in rib plate provided by the utility model;
fig. 9 is the utility model provides a hollow pier's of prefabricated bottom seam assembly sketch map of assembling of taking built-in floor.
Icon:
1-a base;
101-embedding reinforcing steel bars;
102-a stirrup;
2-a bottom segment;
201-solid segment;
202-connecting the steel bar hole channel;
203-post-pouring concrete;
204-bottom segment rib plate;
205-bottom section connecting reinforcing steel bars;
3-an intermediate section;
301-intermediate segment rib plate;
302-connecting reinforcing steel bars under the middle section;
303-middle section seam stirrup;
304-intermediate segment UHPC;
305-connecting reinforcing steel bars on the middle section;
4-a top cap segment;
401-top cap segment ribs;
402-top cap segment connecting reinforcement;
403-top cap segment seam stirrup;
404-top cap segment UHPC;
5-bottom seam;
6-middle joint;
7-prestressed pipe;
8-full length prestressed tendons;
801-prestressed tendon anchoring end;
802-prestressed tendon stretching end;
803-pre-stressed tendon sealing anchor;
9-grouting;
10-temporary template;
11-connecting the stirrup at the inner side of the steel bar.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
As shown in fig. 1-9, a prefabricated assembled hollow pier with built-in ribbed slabs sequentially comprises a foundation 1, a bottom section 2, a middle section 3 and a top cap section 4 from bottom to top, wherein the top of the foundation 1 is provided with embedded steel bars 101, and the embedded steel bars 101 are provided with stirrups 102, so that the embedded steel bars 101 have certain rigidity and are ensured to be vertical; the embedded steel bars 101 and the stirrups 102 form a plurality of steel bar cages which are dispersedly arranged on the foundation 1.
The solid section 201 is arranged below the bottom segment 2, the bottom segment 2 and the solid section 201 are prefabricated together, integrity of the bottom segment 2 and the solid section 201 is guaranteed, a connecting steel bar hole 202 is reserved in the solid section 201, and the diameter of the connecting steel bar hole 202 is 5cm larger than each side of the embedded steel bar 101 of the foundation 1, so that the embedded steel bar is convenient to penetrate.
And post-pouring concrete 203, namely filling micro-expansion concrete or high-performance concrete in the pore canal of the embedded steel bar 101, anchoring the embedded steel bar 101, and realizing the connection between the solid section 201 and the foundation 1.
All set up the floor on bottom segment 2, middle segment 3, the top cap segment 4, all set up the connecting reinforcement on every floor, every connecting reinforcement all stretches out corresponding floor certain length, and the mutual overlap joint of connecting reinforcement between each section is more than 10 times reinforcing bar diameter, pours UHPC, realizes the connection and biography power between each connecting reinforcement of each section each other.
The foundation 1, the bottom section 2, the middle section 3 and the top cap section 4 are all pre-embedded with prestressed pipelines 7, and are connected by penetrating full-length prestressed bundles 8, so that the connection performance among the sections is ensured; the prestressed tendon anchoring end 801 is arranged in the foundation 1 and is connected through a self-locking anchorage device, a full-length prestressed tendon 8 penetrates from the top end and then is locked in the foundation 1, and the prestressed tendon tensioning end 802 at the top end of the top cap segment 4 is tensioned to seal the anchor 803 with the prestressed tendon.
Further, a plurality of ribbed slabs are arranged on the inner side of the pier wall of the bottom section 2, the middle section 3 and the top cap section 4 and are distributed along the periphery, and the ribbed slabs and the sections are prefabricated together.
Furthermore, each rib plate is flush with the upper part of the connected segment, an expansion head is adopted at a certain position of the upper part of each rib plate, and the outer contour of the expansion head is larger than the size of the lower part of the rib plate of the connected segment.
Specifically, the upper part of each bottom section rib plate 204 is flush with the top surface of the bottom section 2, an expansion head is adopted at a certain position of the upper part of each bottom section rib plate 204, and the outer contour of the expansion head is larger than the size of the lower part of the rib plate of the connected section.
Specifically, the upper side of each middle section rib plate 301 is flush with the middle section 3, an expansion head is adopted at a certain position of the upper part of each middle section rib plate 301, the outer contour of the expansion head is larger than the size of the lower side of the connected rib plate, the lower part of the expansion head is shorter than the bottom of the middle section 3, and the lower side of the rib plate is in a slope form, so that UHPC pouring and compactness are facilitated.
Further, the cross-sectional dimension of the rib is shorter than that of the lower connected segment, and the lower part of the rib is arranged in a slope form.
Specifically, the lower part of the top cap segment rib plate 401 is shorter than the bottom of the top cap segment 4, and the lower part is set to be in a slope form, so that UHPC pouring and compactness are facilitated.
As shown in fig. 6, each connecting reinforcement extends out of the rib plate of the connected segment, the connecting reinforcements are arranged in a staggered manner, the connecting reinforcement at the upper segment is arranged in the middle of the connecting reinforcement at the lower segment, the binding stirrup 102 penetrates into the connecting reinforcement at the upper segment, and the binding stirrup 102 is arranged around the connecting reinforcements at the upper and lower segments.
Specifically, the connecting steel bars extend out of the rib plates of the bottom section 2, the middle section 3 and the top cap section 4 by using common steel bars arranged inside the rib plates.
It should be pointed out that, end section connecting reinforcement 205 stretches out end section floor 204 top, and connecting reinforcement 302 stretches out middle section floor 301 below under the middle section, and end section connecting reinforcement 205 and middle section lower connecting reinforcement 302 planar position stagger each other, are convenient for penetrate, guarantee that overlap length is not less than 10 times the reinforcing bar diameter, arrange middle section seam stirrup 303 all around, strengthen the connection.
It should also be pointed out that connecting reinforcement 305 stretches out above middle section floor 301 on the middle section, and top cap section connecting reinforcement 402 stretches out below top cap section floor 401, and connecting reinforcement 305 and top cap section connecting reinforcement 402 plane position on the middle section stagger each other, are convenient for penetrate, guarantee that overlap length is not less than 10 times the reinforcing bar diameter, arrange top cap section 4 stirrup 102 all around, strengthen the connection.
As shown in fig. 7, each connecting steel bar extends out of the rib plate of the connected segment, the connecting steel bars are arranged inside and outside, and when the connecting steel bar at one side is arranged outside, a stirrup 102 is bound around the connecting steel bar when the corresponding segment is prefabricated; when one side connecting reinforcement arranged in the inboard, form connecting reinforcement inboard stirrup 11 promptly, when corresponding section prefabrication at connecting reinforcement ligature stirrup 102 all around, during assembling with inboard connecting reinforcement penetrate outside connecting reinforcement, realize connecting.
As shown in fig. 8, the connecting bars may extend from the ribs of the adjacent segments, or may extend from the interior of the adjacent segments.
In addition, the casting material between each rib plate adopts UHPC, namely the UHPC is cast in the gap between the rib plate and the upper and lower sections.
The size of a connecting steel bar extending out between the UHPC pouring and each rib plate and between the connecting rib plates is the same as the expansion of the connected lower rib plate, and the UHPC pouring is performed from the gap between the temporary template 10 and the connected upper section rib plate; the height is not less than 10 times of the diameter of the connecting steel bar, so that the connecting steel bar is ensured to be firmly connected; the cast-in-situ UHPC is firmly connected with the prefabricated upper and lower ribbed plates and the pier wall and also serves as a shear key between prefabricated structures; the UHPC has small pouring amount, small height, self-compaction, vibration-free and convenient construction.
The structure of the prefabricated assembled hollow pier with the built-in rib plates is further explained by combining a construction method, and the construction method comprises the following steps:
firstly, constructing a foundation 1, binding stirrups 102 of embedded steel bars 101, and prefabricating a bottom section 2, a middle section 3 and a top cap section 4 to be assembled;
secondly, paving high-strength mortar at the bottom joint 5 on the top surface of the foundation 1, hoisting the bottom section 2 for installing by a mortar sitting method, penetrating the embedded steel bars 101 into the connecting steel bar pore passage 202 of the solid section 201, and pouring post-cast concrete 203;
laying epoxy resin glue of a middle joint 6 on the top surface of the bottom section 2, hoisting the middle section 3 for installation, aligning a middle section lower connecting steel bar 302 with the bottom section connecting steel bar 205, mutually penetrating or binding a middle section joint stirrup 303102, erecting a temporary template 10, and casting a middle section UHPC 304;
laying an epoxy resin adhesive of a middle joint 6 on the top surface of the lower middle section 3, hoisting the upper middle section 3, aligning a lower connecting steel bar 302 of the upper middle section with an upper connecting steel bar 305 of the lower middle section, mutually penetrating or binding a middle joint stirrup 303102, erecting a temporary template 10, and pouring a middle section UHPC 304;
laying epoxy resin glue of a middle joint 6 on the top surface of the middle section 3, hoisting the top cap section 4, aligning the top cap section connecting steel bar 402 with the connecting steel bar 305 on the middle section, mutually penetrating or binding top cap section joint stirrups 403102, erecting a temporary template 10, and casting a top cap section UHPC 404;
step six, sequentially penetrating full-length prestressed bundles 8 into pre-buried prestressed pipelines 7 in the top cap section 4, the middle section 3, the bottom section 2 and the foundation 1 from the top end of the top cap section 4, and tensioning and sealing the anchor from a tensioning end at the top end of the top cap section 4;
and seventhly, grouting 9 is carried out on the pipeline with the full length of the prestressed beam 8.
The embodiment of the utility model provides a hollow pier is assembled in prefabrication of taking built-in floor has following effect:
1. by additionally arranging the connecting steel bars, the defects of insufficient energy consumption and low ductility of the prestressed splicing piers are overcome, and the prestressed splicing piers can be suitable for high-seismic areas; the connecting steel bars do not occupy the space of the pier wall, and the prestress on the pier wall is flexibly arranged and is simple and convenient to manufacture; the construction of the connecting steel bar is not influenced by the severe conditions of the external environment, the construction is facilitated, and the appearance of the structure is not influenced; the connecting steel bars are positioned in the structure, so that the durability is good, and the connecting steel bars are suitable for the erosion environment;
2. by combining the prestressed steel bundles and the connecting steel bars, the connection performance of the joint is obviously improved, the risks of corrosion, failure and the like of the prestressed steel bundles existing in pure prestressed connection are compensated, the number of required prestressed forces is reduced, and the procedures of prestressed beam penetrating, tensioning and the like are simplified;
3. the stability of the segments is improved by arranging the rib plates, the segment length of the pier column segments is increased, the number of joints is reduced, the overall stability of the pier and the local stability of the pier wall are improved, and the pier is particularly suitable for high piers in water areas or sea areas; when the cast-in-place construction of pier, receive influence such as inner formword creeping formwork, set up the floor and increase the construction degree of difficulty greatly, this scheme festival section adopts prefabricated construction, simple manufacture effectively solves the inconvenient problem of construction.
4. By using the UHPC between the segments as a structural shear key and not arranging the shear key on the pier wall, the special template arrangement during segment manufacturing is simplified, the cost is saved and the segment manufacturing progress is accelerated; and the accurate alignment of pier wall shear keys is not needed during assembly, so that the assembly speed is increased.
5. The connecting reinforcing bars pass through the UHPC overlap joint, and the reinforcing bar connection need not counterpoint one by one, and convenient construction, UHPC seam pouring volume is little, and is highly little, self-compaction, exempt from the vibration, construction convenience.
6. The sections can be temporarily locked by binding the stirrups 102 of the connecting steel bars in the section assembling process, so that the stability of the sections in the assembling process is ensured.
7. When the pier stud has navigation or anti-collision requirements, the solid section 201 is arranged at the bottom of the pier, and the solid pier and the pier stud are prefabricated together and are reliably connected with the foundation 1.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (9)

1. The utility model provides a hollow pier is assembled in prefabrication of built-in floor in area, by down and on include basis (1), end festival section (2), middle festival section (3), top cap festival section (4) in proper order, its characterized in that:
the top of the foundation (1) is provided with embedded steel bars (101), and the embedded steel bars (101) are provided with stirrups (102);
a solid section (201) is arranged below the bottom section (2), the bottom section (2) and the solid section (201) are prefabricated together, a connecting steel bar hole (202) is reserved in the solid section (201), and the diameter of the connecting steel bar hole (202) is 5cm larger than that of each side of an embedded steel bar (101) at the top of the foundation (1);
post-cast concrete (203) is filled in the pore channel of the embedded steel bar (101);
ribbed plates are arranged on the bottom section (2), the middle section (3) and the top cap section (4), each ribbed plate is provided with a connecting steel bar, each connecting steel bar extends out of the corresponding ribbed plate, and the connecting steel bars among the sections are mutually lapped by more than 10 times of the diameter of the steel bar;
the foundation (1), the bottom section (2), the middle section (3) and the top cap section (4) are all pre-embedded with prestressed pipelines (7) and are connected by penetrating through long prestressed tendons (8).
2. The precast assembled hollow pier with the built-in rib plate as claimed in claim 1, wherein the embedded steel bars (101) and the stirrups (102) form a plurality of reinforcement cages which are dispersedly arranged on the foundation (1).
3. The precast assembled hollow pier with built-in ribs according to claim 1, wherein a plurality of ribs are provided inside the pier walls of the bottom segment (2), the middle segment (3) and the top cap segment (4) and are distributed around, and the plurality of ribs are precast together with the segments.
4. The prefabricated assembled hollow pier with the built-in rib plates as claimed in claim 1, wherein each rib plate is flush with the upper part of the connected segment, an enlarged head is adopted at a certain position of the upper part of each rib plate, and the outer contour of the enlarged head is larger than the size of the lower part of the rib plate of the connected segment.
5. The precast assembled hollow pier with the built-in rib plate as claimed in claim 4, wherein the rib plate has a shorter sectional dimension than the lower connected segment, and the lower part of the rib plate is provided in a slope form.
6. The prefabricated assembled hollow pier with the built-in ribbed plates according to claim 1, wherein each connecting steel bar extends out of the ribbed plates of the connected sections, the connecting steel bars are arranged in a staggered mode, the connecting steel bar positioned on the upper section is arranged in the middle of the connecting steel bar positioned on the lower section, a binding stirrup (102) is penetrated, and the binding stirrups (102) are arranged on the periphery of the connecting steel bars positioned on the upper section and the lower section.
7. The prefabricated assembled hollow pier with the built-in ribbed plates according to claim 1, wherein each connecting steel bar extends out of the ribbed plates of the connected segments, the connecting steel bars are arranged inside and outside, and when the connecting steel bar on one side is arranged on the outer side, stirrups (102) are bound around the connecting steel bar when the corresponding segment is prefabricated; when one side connecting reinforcement is arranged in the inner side, stirrups are bound around the connecting reinforcement when corresponding sections are prefabricated, and the inner side connecting reinforcement penetrates into the outer side connecting reinforcement during assembling.
8. The precast assembled hollow pier with the built-in rib plate according to claim 1, wherein the connecting reinforcement includes rib plate reinforcements and pier column reinforcements.
9. The prefabricated assembled hollow pier with the built-in ribbed plates according to claim 1, wherein UHPC is adopted as a casting material between the ribbed plates.
CN202021230556.7U 2020-06-29 2020-06-29 Prefabricated hollow pier of assembling of built-in floor in area Active CN212561132U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021230556.7U CN212561132U (en) 2020-06-29 2020-06-29 Prefabricated hollow pier of assembling of built-in floor in area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021230556.7U CN212561132U (en) 2020-06-29 2020-06-29 Prefabricated hollow pier of assembling of built-in floor in area

Publications (1)

Publication Number Publication Date
CN212561132U true CN212561132U (en) 2021-02-19

Family

ID=74613987

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021230556.7U Active CN212561132U (en) 2020-06-29 2020-06-29 Prefabricated hollow pier of assembling of built-in floor in area

Country Status (1)

Country Link
CN (1) CN212561132U (en)

Similar Documents

Publication Publication Date Title
CN105735112B (en) Bolt connection-based rapid assembling precast rectangular concrete filled steel tube bridge pier
KR20110103000A (en) Precast bridge joint structure with composite hollow concrete filled tube and a construction method for the same
CN110387826B (en) Segment prefabricated and assembled pier steel member and construction method and application thereof
KR101886345B1 (en) CONSTRUCTION METHOD OF HYBRID RAILWAY BRIDGE USING PRESTRESSED CONCRETE FILLED TUBE and TRANSVERSE PRESTRESSED CONCRETE BLOCK
CN111206492A (en) Transverse segmented prefabricated prestressed concrete bent cap structure and assembling method
CN212561132U (en) Prefabricated hollow pier of assembling of built-in floor in area
KR20120115875A (en) Bridge post which is assembled by precasted units
CN210369316U (en) Steel construction adds armpit combination beam module
CN212103638U (en) A connection structure that is used for prefabricated pin-connected panel pier combination of segment
CN211171555U (en) Large-span assembled bridge structure
CN111827095A (en) Prefabricated assembled hollow pier with built-in rib plates and construction method
CN109972512B (en) Cast-in-place construction method of profiled steel sheet-concrete combined bridge deck slab
CN111648228A (en) Assembled pier and construction process thereof
CN111851564A (en) Spliced bearing platform plate structure connected with pile foundation and construction method
KR20120029625A (en) Construction method of steel composite girder bridge applying precast deck
CN107268366B (en) Assembled wallboard and pile plate combined soilless roadbed
CN212561129U (en) Hollow pier is assembled in prefabrication suitable for take diaphragm
CN212561130U (en) Prefabricated assembled hollow pier connected through prestress
CN212561128U (en) Pier is assembled to grout bellows tied in a bundle that links to each other with prefabricated cushion cap
CN111827092A (en) Prefabricated assembled hollow pier suitable for being provided with diaphragm plate and construction method
CN211113140U (en) Equal cast-in-place assembly type hollow pier system
CN212561120U (en) Post-cast concrete type connecting structure between prefabricated top cap and pier stud
CN211200023U (en) Prefabricated bridge construction of full assembled
CN212103636U (en) Hollow pier is assembled in prefabrication based on UHPC seam
CN111827091A (en) Prefabricated assembled hollow pier connected through prestress and construction method

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant