CN110952440B

CN110952440B - Prefabricated section steel concrete and reinforced concrete spliced pier and construction process

Info

Publication number: CN110952440B
Application number: CN201911132949.6A
Authority: CN
Inventors: 陈百玲; 王连广; 谭畅; 殷悦; 李雪; 张耀升; 张彦明
Original assignee: Northeastern University China
Current assignee: Northeastern University China
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2021-06-15
Anticipated expiration: 2039-11-19
Also published as: CN110952440A

Abstract

The prefabricated section steel concrete and reinforced concrete assembled bridge pier is divided into two connection modes, namely bolted connection and connector connection, and the bolted assembled bridge pier comprises a foundation, a first bottom section, a first middle section, a first top section and a cover beam; the spliced pier connected by the connector comprises a foundation, a second bottom section, a second middle section, a second top section and a cover beam; the construction process for assembling the pier by the prefabricated section steel concrete and the reinforced concrete comprises the following steps: step 1, manufacturing an assembly, prefabricating a first bottom section, a first middle section, a first top section and a cover beam or prefabricating a second bottom section, a second middle section, a second top section and a cover beam; and 2, mounting the assembly. The designed prefabricated sections and the foundation connection technology, the prefabricated sections connection technology and the prefabricated sections and the capping beam connection technology can ensure that all prefabricated parts are connected into a whole, so that the structure is stressed and deformed cooperatively.

Description

Prefabricated section steel concrete and reinforced concrete spliced pier and construction process

Technical Field

The invention belongs to the technical field of bridge engineering, and particularly relates to a prefabricated section steel concrete and reinforced concrete assembled pier and a construction process.

Background

At present, most bridges constructed in China are composed of cast-in-place reinforced concrete bridge abutments, cast-in-place concrete bridge piers, cast-in-place concrete bridge decks and precast concrete beams. The cast-in-place concrete construction consumes a large amount of time, needs a plurality of field construction procedures, can cause negative effects on the traffic flow, the safety of a working area and the environment, particularly, under the restriction of factors such as complex construction environment, construction space, climatic conditions, environmental protection conditions and the like, further promotes the development of the industrialized technology of bridge engineering, and produces the precast concrete assembled bridge. The prefabricated concrete assembled bridge is produced through making prefabricated concrete member in factory or in other place, transporting the prefabricated concrete member to the construction site, treating the prefabricated concrete member in the construction site, and assembling the semi-finished product assembly to form the prefabricated concrete assembled bridge. The precast concrete assembled bridge avoids the defects of the traditional cast-in-place concrete bridge construction, realizes high bridge construction speed, does not interrupt normal traffic, has short construction period, low construction noise and few material stacking places, and is favorable for environmental protection. At present, in the construction period of large-scale traffic infrastructures, a new technology which has the advantages of high quality, high construction speed, strong practicability, good durability, excellent earthquake resistance and environmental protection is very needed in China. It is necessary to research and develop a prefabricated segment assembling pier assembling technology with more reasonable stress performance.

In foreign countries, many countries have adopted precast concrete assembled bridges in railways, highways and urban bridges, developed precast concrete slabs, precast concrete beams, precast concrete abutments, precast concrete piers and other assemblies in various cross-sectional forms, and made design specifications or regulations of precast concrete bridges suitable for the characteristics of the country. In China, the prefabricated assembly technology is mainly applied to a main beam of a bridge superstructure, the construction technology is mature, the bridge substructure is mainly cast-in-place technology, particularly, the urban bridge substructure basically adopts the cast-in-place concrete technology, and only part of the cross-sea engineering adopts the prefabricated assembly technology of connecting whole-pier prefabricated cast-in-place wet joints. Meanwhile, the research on prefabricated assembled bridge beams is also started in China, but the research on the prefabricated concrete pier stud and foundation connection technology, the connection technology between the prefabricated concrete segments, the connection between the prefabricated concrete segments and the capping beam and the stress performance after connection, particularly the anti-seismic performance of the integral pier stud after connection is relatively few, so that the application range of the prefabricated assembled bridge beams is limited.

The pier stud of the bridge substructure is the main stressed member of the bridge, and has to have good earthquake resistance ductility and energy consumption capacity in addition to sufficient pressure resistance, bending resistance and shearing resistance and good durability. The most complicated stress part of the pier column in the bridge is the connection part of the pier column and the foundation, and for the prefabricated section reinforced concrete pier column, foreign experts propose a method for increasing energy consumption ribs at the foundation section of the pier column, so that the anti-seismic performance of the pier column is improved. The invention provides a bridge pier stud foundation which adopts prefabricated section steel reinforced concrete sections, and other parts of the pier body adopt prefabricated reinforced concrete sections, and the prefabricated section steel reinforced concrete sections and the prefabricated reinforced concrete sections are reasonably connected into a whole through corresponding connection measures. The section steel concrete has the advantages of high construction speed, high bearing capacity, good earthquake resistance and the like, and therefore, the section steel concrete is applied to a plurality of structures in the field of geotechnical engineering. However, the research on the connection technology of prefabricated section steel concrete, prefabricated section steel concrete and other prefabricated components is rare, and particularly, the research and application of connecting prefabricated section steel concrete segments and prefabricated reinforced concrete segments to serve as bridge piers have not been reported yet.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme:

pier is assembled with reinforced concrete to prefabricated shaped steel concrete, including basis, first bottom segment, first middle segment, first top segment and bent cap, the basis top is connected with first bottom segment one end through the end crab-bolt, and the first bottom segment other end is connected with first middle segment one end through the intermediate junction crab-bolt, and the first middle segment other end is connected with first top segment one end through the intermediate junction crab-bolt, and the first top segment other end is connected with the bent cap through the top crab-bolt, and the top anchor bolt encapsulates in the high-strength mortar in the district that waters behind the bent cap top.

The first bottom section comprises a bottom section lower steel plate, the upper surface of the bottom section lower steel plate is welded with a steel reinforcement framework and one end of built-in section steel, the steel reinforcement framework is sleeved outside the built-in section steel, a plurality of section steel connecting pieces are welded on the outer surface of a flange plate of the built-in section steel, the steel reinforcement framework and the other end of the built-in section steel are welded with the lower surface of a bottom section upper steel plate, an intermediate connecting anchor bolt is arranged in a bolt hole of the bottom section upper steel plate, a bottom section embedded part is welded in the middle of the lower surface of the bottom section lower steel plate, nuts of the built-in section steel, the steel reinforcement framework, the section steel connecting pieces and the intermediate connecting anchor bolt are all packaged in common concrete, the built-in section steel adopts built;

the first middle section comprises a middle section lower steel plate and a middle section upper steel plate, the upper surface of the middle section lower steel plate is welded with one end of the steel reinforcement framework and a middle section embedded part positioned at the bottom end, the lower surface of the middle section upper steel plate is welded with the other end of the steel reinforcement framework and a middle section embedded part positioned at the top end, the bottom end of the steel reinforcement framework is sleeved outside the middle section embedded part positioned at the bottom end, the top end of the steel reinforcement framework is sleeved outside the middle section embedded part positioned at the top end, a middle connection anchor bolt is arranged in a bolt hole of the middle section upper steel plate, the middle section embedded part positioned at the top end, the middle section embedded part positioned at the bottom end, a part of the steel reinforcement framework and the middle connection anchor bolt are all packaged in common concrete, a longitudinal steel bar at the bottom end of the steel reinforcement framework extends out;

first top segment includes steel sheet and top segment upper steel sheet under the top segment, and steel sheet upper surface and the top segment built-in fitting and the framework of steel reinforcement one end welding that are located the bottom under the top segment, the framework of steel reinforcement other end and the welding of steel sheet on the top segment, and the framework of steel reinforcement suit installs a roof bolt, part in the top segment built-in fitting outside that is located the bottom on the steel sheet on the top segment the nut of framework of steel reinforcement, roof bolt and the top segment built-in fitting that is located the bottom encapsulate in ordinary concrete, and the district is watered after the vertical reinforcing bar of framework of steel reinforcement bottom stretches out ordinary concrete part and forms the segment junction, and first top segment is square column or cylinder.

The bottom section embedded part, the middle section embedded part and the top section embedded part are of the same structure and are uniformly divided into a steel pipe embedded part, a profile steel embedded part and a coarse reinforcement embedded part, when the steel pipe embedded part is adopted, the steel pipe embedded part is composed of a steel pipe, a plurality of embedded part connecting pieces and high-strength concrete, the inner wall and the outer wall of the steel pipe are welded with the plurality of embedded part connecting pieces, and the high-strength concrete is filled in the steel pipe to encapsulate the embedded part connecting pieces positioned on the inner side of the steel pipe in the concrete; when the profile steel embedded part is adopted, the profile steel embedded part consists of profile steel and a plurality of embedded part connecting pieces, and the plurality of embedded part connecting pieces are welded in the longitudinal direction of the flange plate; when the steel bar embedded part is adopted, the steel bar embedded part comprises a thin steel plate and thick steel bars, the thin steel plate is welded with the thick steel bars, and the thick steel bars are distributed in a matrix form.

Pier is assembled with reinforced concrete to prefabricated shaped steel concrete, including base, second bottom segment, second middle segment, second top segment and bent cap, the base top is connected with second bottom segment one end through the bottom anchor bolt, and the second bottom segment other end is connected with second middle segment one end, and the second middle segment other end is connected with second top segment one end, and the second top segment other end is connected with the bent cap through the top anchor bolt, and the top anchor bolt encapsulates in the high strength mortar of the post-cast section in bent cap top.

The second bottom section comprises a bottom section lower steel plate, a bottom section embedded part is welded on the lower surface of the bottom section lower steel plate, the upper surface of the bottom section lower steel plate is welded with a steel reinforcement framework and one end of the built-in section steel, the steel reinforcement framework is sleeved on the outer side of the built-in section steel, the height of the steel reinforcement framework is smaller than that of the built-in section steel, a bottom section steel connector is installed at the top end of each longitudinal steel bar of the steel reinforcement framework, the built-in section steel, the steel reinforcement framework and the bottom section steel connector are all packaged in common concrete, the built-in section steel is packaged on a flange plate of a common concrete part and welded with a section steel connecting piece, the top end of the built-in section steel protrudes out of the common concrete, an injection nozzle of the bottom section steel connector extends out of the common concrete, the built-in section steel adopts built-;

the second middle section comprises a steel reinforcement framework, a middle section steel reinforcement connector is installed at the top of each longitudinal steel reinforcement of the steel reinforcement framework, the steel reinforcement framework and the middle section steel reinforcement connector are packaged in common concrete, a boss is arranged at the top end of the common concrete, a groove matched with the protruding part of the built-in section steel of the second bottom section is arranged at the bottom end of the common concrete, part of the longitudinal steel reinforcement of the steel reinforcement framework positioned at the groove end protrudes out of the common concrete, and the second middle section is a square column or a cylinder;

the second top segment comprises a steel reinforcement framework, one end of the steel reinforcement framework is welded on the steel plate of the top segment, a top anchor bolt is installed on the steel plate of the top segment, nuts of the steel reinforcement framework and the top anchor bolt are packaged in common concrete, a groove matched with a boss of the second middle segment is formed in the bottom end of the common concrete, the part of the steel reinforcement framework located at the groove end protrudes the common concrete, and the second top segment is a square column or a cylinder.

The bottom section embedded parts are steel pipe embedded parts, profile steel embedded parts and thick steel bar embedded parts, when the steel pipe embedded parts are adopted, the steel pipe embedded parts are composed of steel pipes, a plurality of embedded part connecting parts and high-strength concrete, the inner wall and the outer wall of each steel pipe are welded with the plurality of embedded part connecting parts, and the embedded part connecting parts positioned on the inner sides of the steel pipes are packaged in the concrete by filling the high-strength concrete in the steel pipes; when the profile steel embedded part is adopted, the profile steel embedded part consists of profile steel and a plurality of embedded part connecting pieces, and the plurality of embedded part connecting pieces are welded in the longitudinal direction of the flange plate; when the steel bar embedded part is adopted, the steel bar embedded part comprises a thin steel plate and thick steel bars, the thin steel plate is welded with the thick steel bars, and the thick steel bars are distributed in a matrix form.

The construction process for assembling the pier by the prefabricated section steel concrete and the reinforced concrete comprises the following steps:

step 1, manufacturing an assembly, prefabricating a first bottom section, a first middle section, a first top section and a cover beam:

prefabricating a first bottom section: manufacturing built-in section steel, a bottom section embedded part and a steel reinforcement framework according to design requirements, and longitudinally welding a section steel connecting piece along a flange plate of the built-in section steel; binding stirrups on longitudinal reinforcements to form a reinforcement cage, welding the longitudinal reinforcements and the built-in section steel of the reinforcement cage on the bottom section lower steel plate and the bottom section upper steel plate, and simultaneously welding the bottom section embedded parts on the lower surface of the bottom section lower steel plate; installing and fixing the intermediate connection anchor bolt on the upper steel plate of the bottom section, erecting a template, pouring common concrete, and packaging the built-in profile steel, the steel reinforcement framework, the profile steel connecting piece and the nut of the intermediate connection anchor bolt in the common concrete to form a first bottom section;

prefabricating a first intermediate section: manufacturing two middle-section embedded parts according to design requirements; binding stirrups on the longitudinal reinforcements to form a reinforcement framework, and respectively welding the longitudinal reinforcements of the reinforcement framework and the two middle-section embedded parts on the middle-section lower steel plate and the middle-section upper steel plate; installing and fixing an intermediate connecting anchor bolt on the intermediate section upper steel plate, erecting a template and pouring common concrete, packaging two intermediate section embedded parts, a reinforcement cage and a nut of the intermediate connecting anchor bolt in the common concrete, and ensuring that a longitudinal reinforcement close to the intermediate section lower steel plate part extends out of the common concrete to form a post-cast area at a section joint to form a first intermediate section;

prefabricating a first top section: manufacturing a top section embedded part according to design requirements, welding the top section embedded part on a top section lower steel plate, binding stirrups on longitudinal reinforcements to form a reinforcement framework, welding the longitudinal reinforcements of the reinforcement framework on the top section lower steel plate and the top section upper steel plate, mounting and fixing a top anchor bolt on the top section upper steel plate, supporting a template and pouring common concrete to form a first top section;

prefabricating a cover beam: supporting a template; manufacturing a lower layer of steel bars, an upper layer of steel bars and supporting steel bars, uniformly distributing and binding by using binding wires; pouring concrete to package the upper layer of reinforcing steel bars, the lower layer of reinforcing steel bars and the supporting reinforcing steel bars in common concrete, forming a capping beam top post-pouring area in the middle of the surface of the capping beam, and simultaneously reserving anchor bolt holes in the longitudinal direction of the capping beam, wherein the anchor bolt holes are communicated with the capping beam top post-pouring area;

step 2, component installation:

pouring a foundation in situ: supporting a template; manufacturing a lower layer of steel bars, an upper layer of steel bars and supporting steel bars, uniformly distributing and binding by using binding wires; pouring concrete to encapsulate upper-layer steel bars, lower-layer steel bars and supporting steel bars in common concrete, wherein the top of a bottom anchor bolt protrudes out of the common concrete, a groove is formed in the middle of the surface of the common concrete at the same time, the groove and the protruding part of the bottom anchor bolt are ensured to be on the same side, after the foundation reaches the design strength, a first bottom section is placed on the foundation, high-strength mortar is filled in the groove, a bottom section embedded part on the first bottom section is inserted into the groove, and meanwhile, the bottom section lower steel plate on the groove is matched with the bottom anchor bolt to be fixed on the foundation;

placing the first middle section on the first bottom section, enabling a middle connecting anchor bolt on the upper steel plate of the bottom section of the first bottom section to penetrate into a preformed hole of the lower steel plate of the middle section of the first middle section, and fixing the preformed hole by using a nut;

placing the first top section on the first middle section, enabling an intermediate connecting anchor bolt on an upper steel plate of the middle section of the first middle section to penetrate into a preformed hole of a lower steel plate of the top section of the first top section, and fixing the preformed hole by using a nut;

placing the cover beam on the first top section, and enabling the top anchor bolt of the first top section to penetrate through the preformed hole of the cover beam and be fixed by a nut;

pouring high-strength mortar into a post-pouring area at the joint of the first middle section and the first top section; and pouring high-strength mortar to the post-pouring area at the top of the capping beam to form the prefabricated section steel concrete and reinforced concrete assembled pier.

step 1, manufacturing an assembly, prefabricating a second bottom section, a second middle section, a second top section, a foundation and a cover beam:

prefabricating a second bottom section: manufacturing built-in section steel, a bottom section embedded part and a steel reinforcement framework according to design requirements, and longitudinally welding a section steel connecting piece along a flange plate of the built-in section steel; binding stirrups on longitudinal reinforcements to form a reinforcement cage, welding the longitudinal reinforcements and the built-in section steel of the reinforcement cage on a bottom section lower steel plate, simultaneously welding a bottom section embedded part below the bottom section lower steel plate, fixing a bottom section reinforcement connector at the end part of the longitudinal reinforcements, supporting a formwork, pouring common concrete, and packaging the built-in section steel, the section steel connecting part, the bottom section reinforcement connector, the stirrups of the reinforcement cage and the longitudinal reinforcements positioned outside the bottom section reinforcement connector in the common concrete to form a second bottom section;

prefabricating a second intermediate section: binding stirrups on longitudinal reinforcements to form a reinforcement framework, fixing a middle-section reinforcement connector at the end parts of the longitudinal reinforcements of the reinforcement framework, erecting a template and pouring common concrete, packaging the middle-section reinforcement connector, the longitudinal reinforcements and the stirrups in the common concrete to form a second middle section, pouring a boss at the middle part of the second middle section close to the end face of the middle-section reinforcement connector, pouring a groove at one end far away from the middle-section reinforcement connector, and extending the end parts of the longitudinal reinforcements far away from the end part of the middle-section reinforcement connector out of the common concrete;

prefabricating a second top section: binding stirrups on longitudinal reinforcements to form a reinforcement framework, welding the longitudinal reinforcements of the reinforcement framework on an upper steel plate of a top section, mounting and fixing a top anchor bolt on the upper steel plate of the top section, erecting a formwork and pouring common concrete, packaging nuts of the reinforcement framework and the top anchor bolt in the common concrete to form a second top section, extending the end part of the longitudinal reinforcements, far away from one end of the upper steel plate of the top section, of the second top section out of the common concrete, and pouring a groove in the middle of the end face of the common concrete;

step 2, component installation:

pouring a foundation in situ, and supporting a template; manufacturing a lower layer of steel bars, an upper layer of steel bars and supporting steel bars, uniformly distributing and binding by using binding wires; pouring concrete to encapsulate the upper layer reinforcing steel bars, the lower layer reinforcing steel bars and the supporting reinforcing steel bars in the common concrete, wherein the top of the bottom anchor bolt protrudes out of the common concrete, a groove is formed in the middle of the surface of the common concrete at the same time, the groove and the protruding part of the bottom anchor bolt are ensured to be on the same side, after the foundation reaches the design strength, the second bottom section is placed on the foundation, high-strength mortar is filled in the groove, and then the embedded part on the second bottom section is inserted into the groove, so that the bottom anchor bolt on the foundation penetrates through the preformed hole of the lower steel plate of the bottom section and is fixed by nuts;

placing the second middle section on the second top section, enabling the convex part of the built-in section steel of the second bottom section to be matched with the groove of the second middle section, and simultaneously inserting the longitudinal steel bar extending out of the second middle section into the bottom section steel bar connector of the second bottom section;

placing the second top section on the second intermediate section so that the protruding boss portion of the second intermediate section fits into the groove of the second top section, and inserting the longitudinal reinforcement extending from the second top section into the middle section reinforcement connector of the second intermediate section;

placing the cover beam on the second top section, and enabling the top anchor bolt of the second top section to penetrate through the preformed hole of the cover beam and be fixed by the nut;

injecting a sleeve grouting material for connecting the steel bars into the middle section steel bar connector and the bottom section steel bar connector from bottom to top through injection nozzles of the middle section steel bar connector and the bottom section steel bar connector respectively, and fixing the longitudinal steel bars at the connection positions; removing the injection nozzle, and plugging the injection port by using grouting material;

and pouring high-strength mortar to the post-pouring area at the top of the capping beam to form the prefabricated section steel concrete and reinforced concrete assembled pier.

The invention has the beneficial effects that: according to the prefabricated section steel concrete and reinforced concrete assembled pier, the prefabricated section steel concrete section is adopted as the bottom section of the pier, the prefabricated reinforced concrete section is adopted as the other part of the pier body, and the prefabricated section steel concrete section and the prefabricated reinforced concrete section are connected into a whole through corresponding connection measures. 1) Each section of the bridge pier is prefabricated, so that the bridge pier can be quickly constructed, the influence on traffic is small, the construction noise is low, the material stacking area is small, the environment protection is facilitated, the component manufacturing is standardized, and the quality is guaranteed. 2) The section steel concrete section is used as the bottom section of the pier, has the advantages of high bearing capacity, good anti-seismic performance and the like, and can ensure that the pier has good anti-seismic ductility and energy consumption capability. 3) The designed prefabricated sections and the foundation connection technology, the prefabricated sections connection technology and the prefabricated sections and the capping beam connection technology can ensure that all prefabricated parts are connected into a whole, so that the structure is stressed and deformed cooperatively.

Drawings

FIG. 1 is a schematic diagram of a prefabricated steel reinforced concrete and reinforced concrete assembled pier in embodiment 1 of the invention;

fig. 2 is a schematic view of a first bottom section of a prefabricated steel reinforced concrete and reinforced concrete assembled pier in embodiment 1 of the invention;

FIG. 3 is a schematic view of the first bottom section a-a of FIG. 2 according to embodiment 1 of the present invention;

fig. 4 is a schematic view of a first middle section of a prefabricated section steel reinforced concrete and reinforced concrete assembled pier in embodiment 1 of the invention;

FIG. 5 is a schematic view of the first intermediate section b-b of FIG. 4 according to embodiment 1 of the present invention;

FIG. 6 is a schematic view of the first intermediate section c-c of FIG. 4 according to embodiment 1 of the present invention;

fig. 7 is a schematic view of a first top section of a prefabricated steel reinforced concrete and reinforced concrete assembled pier in embodiment 1 of the invention;

FIG. 8 is a schematic view of the first top segment of FIG. 7 in a direction d-d according to embodiment 1 of the present invention;

FIG. 9 is a schematic view of the first top section e-e of FIG. 7 according to embodiment 1 of the present invention;

fig. 10 is a schematic view of a first bottom section of a prefabricated steel reinforced concrete and reinforced concrete assembled pier in embodiment 2 of the present invention;

FIG. 11 is a schematic view of the first bottom section f-f of FIG. 10 according to embodiment 2 of the present invention;

fig. 12 is a schematic view of a first middle section of a prefabricated steel reinforced concrete and reinforced concrete assembled pier in embodiment 3 of the present invention;

FIG. 13 is a schematic view of the first intermediate section g-g of FIG. 12 according to example 3 of the present invention;

fig. 14 is a schematic view of a first middle section of a prefabricated section steel reinforced concrete and reinforced concrete assembled pier in embodiment 4 of the invention;

FIG. 15 is a schematic view of the first intermediate section h-h of FIG. 14 according to embodiment 4 of the present invention;

fig. 16 is a schematic view of a first bottom section of a prefabricated steel reinforced concrete and reinforced concrete assembled pier in embodiment 5 of the present invention;

FIG. 17 is a schematic view of the first bottom section i-i of FIG. 16 according to embodiment 5 of the present invention;

fig. 18 is a schematic view of a first intermediate section of a prefabricated section steel reinforced concrete and reinforced concrete assembled pier in embodiment 5 of the present invention;

FIG. 19 is a schematic view of the first intermediate section j-j of FIG. 18 according to embodiment 5 of the present invention;

FIG. 20 is a schematic view of the first intermediate section k-k of FIG. 18 in accordance with embodiment 5 of the present invention;

fig. 21 is a schematic view of a first top section of a prefabricated steel reinforced concrete and reinforced concrete assembled pier according to embodiment 5 of the present invention;

FIG. 22 is a schematic view of the first intermediate section l-l of FIG. 22 according to embodiment 5 of the present invention;

FIG. 23 is a schematic m-m view of the first intermediate section of FIG. 22 according to example 5 of the present invention;

fig. 24 is a schematic view of a first bottom section of a prefabricated steel reinforced concrete and reinforced concrete assembled pier according to embodiment 6 of the present invention;

FIG. 25 is a schematic view of the first bottom segment n-n of FIG. 24 in accordance with embodiment 6 of the present invention;

fig. 26 is a schematic view of a first intermediate section of a prefabricated section steel reinforced concrete and reinforced concrete assembled pier according to embodiment 7 of the present invention;

FIG. 27 is a schematic view of the first intermediate section o-o of FIG. 26 in accordance with embodiment 7 of the present invention;

fig. 28 is a schematic view of a first intermediate section of a prefabricated section steel reinforced concrete and reinforced concrete assembled pier according to embodiment 8 of the present invention;

FIG. 29 is a schematic view of the first intermediate segment p-p of FIG. 25 in accordance with embodiment 8 of the present invention;

fig. 30 is a schematic view of a prefabricated section steel reinforced concrete and reinforced concrete assembled pier in embodiment 9 of the present invention;

fig. 31 is a schematic view of a second bottom section of the prefabricated steel reinforced concrete and reinforced concrete assembled pier in embodiment 9 of the present invention;

FIG. 32 is a schematic view of the second bottom segment A-A of FIG. 31 in accordance with embodiment 9 of the present invention;

fig. 33 is a schematic view of a second intermediate section of the prefabricated section steel reinforced concrete and reinforced concrete assembled pier in embodiment 9 of the present invention;

FIG. 34 is a schematic view of the second intermediate section B-B of FIG. 33 according to embodiment 9 of the present invention;

FIG. 35 is a schematic view of the second intermediate section C-C of FIG. 33 in accordance with example 9 of the present invention;

FIG. 36 is a schematic view of a second coping section of a prefabricated steel reinforced concrete and reinforced concrete assembled pier according to embodiment 9 of the present invention

FIG. 37 is a schematic view of the second top segment D-D of FIG. 36 in accordance with example 9 of the present invention;

fig. 38 is a schematic view of a second bottom section of the prefabricated section steel reinforced concrete and reinforced concrete assembled pier according to embodiment 10 of the present invention;

FIG. 39 is a schematic view of the second bottom segment E-E of FIG. 38 in accordance with embodiment 10 of the present invention;

fig. 40 is a schematic view of a second bottom section of the prefabricated steel reinforced concrete and reinforced concrete assembled pier according to embodiment 11 of the present invention;

FIG. 41 is a schematic view of the second bottom segment F-F of FIG. 40 according to example 11 of the present invention;

fig. 42 is a schematic view of a second intermediate section of the prefabricated section steel reinforced concrete and reinforced concrete assembled pier according to embodiment 11 of the present invention;

FIG. 43 is a schematic view of the second intermediate section G-G of FIG. 42 in accordance with example 11 of the present invention;

FIG. 44 is a second intermediate section H-H of FIG. 42 in accordance with example 11 of the present invention;

fig. 45 is a schematic view of a second top segment of the prefabricated steel reinforced concrete and reinforced concrete assembled pier according to embodiment 11 of the present invention;

FIG. 46 is a schematic view of the second top segment I-I of FIG. 45 according to example 11 of the present invention;

fig. 47 is a schematic view of a second bottom section of the prefabricated section steel reinforced concrete and reinforced concrete assembled pier according to embodiment 12 of the present invention;

FIG. 48 is a schematic view of the second bottom segment J-J of FIG. 47 in accordance with example 12 of the present invention;

FIG. 49 is a front view of a steel pipe embedded part of the prefabricated steel reinforced concrete and reinforced concrete assembled pier of the invention;

FIG. 50 is a top view of a steel pipe embedded part of the prefabricated steel reinforced concrete and reinforced concrete assembled pier of the present invention;

FIG. 51 is a front view of a section steel embedded part of a prefabricated section steel concrete and reinforced concrete assembled pier of the invention;

FIG. 52 is a top view of a section steel embedded part of the prefabricated section steel concrete and reinforced concrete assembled pier of the invention;

FIG. 53 is a side view of a section steel embedded part of the prefabricated section steel concrete and reinforced concrete assembled pier of the invention;

FIG. 54 is a front view of a coarse steel bar embedded part of the prefabricated steel reinforced concrete and reinforced concrete assembled pier of the invention;

FIG. 55 is a top view of a coarse steel bar embedded part of the prefabricated steel reinforced concrete and reinforced concrete assembled pier of the invention;

FIG. 56 is a front view of a bent cap of the prefabricated steel reinforced concrete and reinforced concrete assembled pier of the present invention;

FIG. 57 is a top plan view of a capping beam of the prefabricated steel reinforced concrete and reinforced concrete assembled pier of the present invention;

FIG. 58 is a basic front view of the prefabricated steel reinforced concrete and reinforced concrete assembled pier of the present invention;

FIG. 59 is a top view of the foundation of the prefabricated steel reinforced concrete and reinforced concrete assembled pier of the present invention;

1-a first bottom section, 2-a first middle section, 3-a first top section, 4-a second bottom section, 5-a second middle section, 6-a second top section, 7-a foundation, 8-a cap beam, 9-a bottom anchor, 10-a top anchor, 11-an intermediate connecting anchor, 12-a bottom section lower steel plate, 13-a bottom section upper steel plate, 14-a middle section lower steel plate, 15-a middle section upper steel plate, 16-a top section lower steel plate, 17-a top section upper steel plate, 18-an internal profile steel, 1901-a bottom section embedded part, 1902-a middle section embedded part, 1903-a top section embedded part, 20-a profile steel connecting part, 21-an embedded part connecting part, 2201-a bottom section steel bar connector, 2202-a middle section steel bar connector, 23-high strength concrete, 24-common concrete, 25-capping beam top post-cast area, 26-section joint post-cast area, 27-longitudinal steel bar, 28-injection nozzle, 29-stirrup, 30-steel pipe, 31-section steel, 32-coarse steel bar and 33-thin steel plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

In this embodiment, the bottom section embedded part 1901, the middle section embedded part 1902 and the top section embedded part 1903 are all steel pipe embedded parts, the built-in section steel 18 of the first bottom section 1 is a built-in i-shaped steel, and the first bottom section 1, the first middle section 2 and the first top section 3 are square columns.

As shown in fig. 1 to 9 and 56 to 59, the prefabricated steel reinforced concrete and reinforced concrete assembled pier comprises a foundation 7, a first bottom section 1, a first middle section 2, a first top section 3 and a capping beam 8, wherein the top of the foundation 7 is connected with one end of the first bottom section 1 through a bottom anchor bolt 9, the other end of the first bottom section 1 is connected with one end of the first middle section 2 through a middle connecting anchor bolt 11, the other end of the first middle section 2 is connected with one end of the first top section 3 through a middle connecting anchor bolt 11, the other end of the first top section 3 is connected with the capping beam 8 through a top anchor bolt 10, and the top anchor bolt 10 is encapsulated in high-strength mortar of a post-cast area 25 at the top of the capping beam.

First bottom segment 1 includes steel sheet 12 under the base segment, 12 upper surfaces of steel sheet and steel reinforcement cage and the welding of built-in shaped steel 18 one end under the base segment, and steel reinforcement cage suit in the 18 outsides of built-in shaped steel, have a plurality of shaped steel connecting piece 20 at the flange plate skin weld of built-in shaped steel 18, steel reinforcement cage and the surface welding under the 18 other ends of built-in shaped steel and the base segment steel sheet 13, install intermediate junction crab-bolt 11 in the bolt hole of steel sheet 13 on the base segment, the welding of 12 lower surface middle parts of steel sheet has base segment built-in fitting 1901 under the base segment, the nut of built-in shaped steel 18, steel reinforcement cage, shaped steel connecting piece 20 and intermediate junction crab-bolt 11 all encapsulates in ordinary.

First middle section 2 includes steel sheet 14 under the middle section and middle section upper steel sheet 15, steel sheet 14 upper surface and framework of steel reinforcement one end and the middle section built-in fitting 1902 welding that is located the bottom under the middle section, 15 lower surfaces of steel sheet and the framework of steel reinforcement other end and the middle section built-in fitting 1902 welding that is located the top on the middle section, and the framework of steel reinforcement bottom suit in the middle section built-in fitting 1902 outside that is located the bottom, the middle section built-in fitting 1902 outside that is located the top, install intermediate junction crab-bolt 11 in the bolt hole of steel sheet 15 on the middle section, the middle section built-in fitting 1902 that is located the top, the middle section built-in fitting 1902 that is located the bottom, partial framework of steel reinforcement and intermediate junction crab-bolt 11 all encapsulate in ordinary concrete 24, water district 26 after the vertical reinforcing bar 27 in the framework of steel reinforcement bottom stretches out ordinary.

The first top section 3 comprises a top section lower steel plate 16 and a top section upper steel plate 17, the upper surface of the top section lower steel plate 16 is welded with a top section embedded part 1903 and a steel bar skeleton one end, the bottom end of the top section lower steel plate is welded with the top section upper steel plate 17, the steel bar skeleton is sleeved outside the top section embedded part 1903, the bottom end of the top section upper steel plate 17 is provided with a top anchor bolt 10, and part of the steel bar skeleton, the top anchor bolt 10 nut and the top section embedded part 1903 are packaged in common concrete 24, and a longitudinal steel bar 27 at the bottom end of the steel bar skeleton extends out of the common concrete 24 to form a section joint rear pouring area 26.

As shown in fig. 49 and 50, the bottom-section embedded part 1901, the middle-section embedded part 1902 and the top-section embedded part 1903 all adopt steel pipe embedded parts, each steel pipe embedded part is composed of a steel pipe 30, a plurality of embedded part connecting pieces 21 and high-strength concrete 23, the inner wall and the outer wall of the steel pipe 30 are both welded with the plurality of embedded part connecting pieces 21, and the steel pipe 30 is filled with the high-strength concrete 23 to encapsulate the embedded part connecting pieces 21 located on the inner side of the steel pipe 30 in concrete.

step 1, manufacturing an assembly, prefabricating a first bottom section 1, a first middle section 2, a first top section 3, a foundation 7 and a cover beam 8:

prefabricated first bottom section 1: manufacturing the built-in section steel 18 according to design requirements, and longitudinally welding a section steel connecting piece 20 along a flange plate of the built-in section steel 18; manufacturing a bottom section embedded part 1901 according to design requirements, welding a plurality of embedded part connecting pieces 21 on the inner surface and the outer surface of a steel pipe 30, and then pouring high-strength concrete 23 in the steel pipe 30 to form the bottom section embedded part 1901; manufacturing a steel bar framework according to design requirements, binding stirrups 29 on longitudinal steel bars 27 to form the steel bar framework, welding the longitudinal steel bars 27 and the built-in section steel 18 of the steel bar framework on the bottom section lower steel plate 12 and the bottom section upper steel plate 13, and welding the bottom section embedded parts 1901 on the lower surface of the bottom section lower steel plate 12; installing and fixing the intermediate connection anchor bolt 11 on the bottom section upper steel plate 13, erecting a template and pouring common concrete 24, and encapsulating the built-in section steel 18, the steel reinforcement framework, the section steel connecting piece 20 and the screw cap of the intermediate connection anchor bolt 11 in the common concrete 24 to form a first bottom section 1;

prefabricating the first intermediate section 2: manufacturing two middle-section embedded parts 1902 according to design requirements, respectively welding a plurality of embedded part connecting pieces 21 on the inner surfaces and the outer surfaces of two steel pipes 30, and then respectively pouring high-strength concrete 23 in the steel pipes 30 to form the two middle-section embedded parts 1902; manufacturing a steel bar framework according to design requirements, binding stirrups 29 on longitudinal steel bars 27 to form the steel bar framework, and respectively welding the longitudinal steel bars 27 and two middle-section embedded parts 1902 of the steel bar framework on a middle-section lower steel plate 14 and a middle-section upper steel plate 15; installing and fixing the middle connecting anchor bolt 11 on the middle section upper steel plate 15, erecting a template and pouring common concrete 24, packaging two middle section embedded parts 1902, a reinforcement cage and a nut of the middle connecting anchor bolt 11 in the common concrete 24, and ensuring that a longitudinal reinforcement 27 close to the middle section lower steel plate 14 extends out of the common concrete 24 to form a section joint post-pouring area 26 to form a first middle section 2;

prefabricating the first top section 3: manufacturing a top embedded part 1903 according to design requirements, welding a plurality of embedded part connecting pieces 21 on the inner surface and the outer surface of a steel pipe 30, then pouring high-strength concrete 23 in the steel pipe 30 to form the top embedded part 1903, welding the top embedded part 1903 on a top lower steel plate 16, binding stirrups 29 on longitudinal reinforcements 27 to form a reinforcement framework, welding the longitudinal reinforcements 27 of the reinforcement framework on the top lower steel plate 16 and a top upper steel plate 17, installing and fixing top anchors 10 on the top upper steel plate 17, erecting a formwork and pouring common concrete 24 to form a first top section 3;

prefabricating the capping beam 8: supporting a template; manufacturing a lower layer of steel bars, an upper layer of steel bars and supporting steel bars, uniformly distributing and binding by using binding wires; pouring concrete to package the upper layer of reinforcing steel bars, the lower layer of reinforcing steel bars and the supporting reinforcing steel bars in common concrete 24, forming a capping beam top post-pouring area 25 in the middle of the surface of the capping beam 8, and reserving anchor bolt holes in the longitudinal direction of the capping beam 8, wherein the anchor bolt holes are communicated with the capping beam top post-pouring area 25;

step 2, component installation:

pouring the foundation 7 in situ, and supporting a template; manufacturing a lower layer of steel bars, an upper layer of steel bars and supporting steel bars, uniformly distributing and binding by using binding wires; pouring concrete to encapsulate upper-layer steel bars, lower-layer steel bars and supporting steel bars in common concrete 24, wherein the top of a bottom anchor bolt 9 protrudes out of the common concrete 24, a groove is formed in the middle of the surface of the common concrete 24 at the same time, the protruding part of the groove and the protruding part of the bottom anchor bolt 9 are ensured to be on the same side, after a foundation 7 reaches the designed strength, a first bottom section 1 is placed on the foundation 7, high-strength mortar is filled in the groove, a bottom section embedded part 1901 on the first bottom section 1 is inserted into the groove, and meanwhile, a bottom section lower steel plate 12 on the groove is matched with the bottom anchor bolt 9 and fixed on the foundation 7 through bolts;

placing the first middle section 2 on the first bottom section 1, and enabling an intermediate connecting anchor bolt 11 on a bottom section upper steel plate 13 of the first bottom section 1 to penetrate into a preformed hole of a middle section lower steel plate 14 of the first middle section 2 and fixing the preformed hole by using a nut;

placing the first top segment 3 on the first middle segment 2, and enabling an intermediate connecting anchor bolt 11 on an upper steel plate 15 of the middle section of the first middle segment 2 to penetrate into a reserved hole of a lower steel plate 16 of the top section of the first top segment 3 and fixing the intermediate connecting anchor bolt by using a nut;

placing the capping beam 8 on the first top section 3 and passing the top anchor bolt 10 of the first top section 3 through the prepared hole of the capping beam 8 and fixing it with a nut;

pouring high-strength mortar into the post-pouring area 26 at the joint of the first middle section 2 and the first top section 3; and pouring high-strength mortar to the post-pouring area 25 at the top of the capping beam to form the prefabricated section steel concrete and reinforced concrete assembled pier.

Example 2

This embodiment differs from embodiment 1 in that the first bottom section 1 is a built-in cross-shaped steel, as shown in fig. 10 and 11.

Example 3

The difference between the embodiment and the embodiment 1 is that a section steel embedded part is adopted as the middle section embedded part 1902 of the first middle section 2, when the section steel embedded part is adopted, the section steel 31 is manufactured according to the design requirement, and a row of embedded part connecting pieces 21 are welded along the longitudinal direction of the flange plate to form the section steel embedded part; as shown in fig. 12 and 13 and fig. 51 to 53.

Example 4

The difference between the embodiment and the embodiment 3 is that the middle section of the first middle section 2 at the bottom end adopts a thick steel bar embedded part, when the thick steel bar embedded part is adopted, a thin steel plate 33 and a thick steel bar 32 are manufactured according to the design requirement, then the thick steel bar 32 is welded on the thin steel plate 33, and the thick steel bar 32 is arranged on the thin steel plate 33 in a matrix form to form the steel bar embedded part; as shown in fig. 14 and 15 and fig. 54 and 55.

Example 5

The present embodiment differs from embodiment 1 in that the first bottom section 1, the first intermediate section 2 and the first top section 3 are all cylindrical, as shown in fig. 16 to 23.

Example 6

This embodiment differs from embodiment 5 in that the built-in section steel 18 of the first bottom section 1 is a built-in cross section steel, as shown in fig. 24 and 25.

Example 7

The difference between the embodiment and the embodiment 5 is that a section steel embedded part is adopted as the middle section embedded part 1902 of the first middle section 2, when the section steel embedded part is adopted, the section steel 31 is manufactured according to the design requirement, and a row of embedded part connecting pieces 21 are welded along the longitudinal direction of the flange plate to form the section steel embedded part; as shown in fig. 26 and 27.

Example 8

The difference between this embodiment and embodiment 7 is that, a thick steel bar embedded part is used as the middle section embedded part 1902 at the bottom end of the first middle section 2, when the thick steel bar embedded part is used, the thin steel plate 33 and the thick steel bar 32 are manufactured according to the design requirement, then the thick steel bar 32 is welded on the thin steel plate 33, and the thick steel bar 32 is arranged on the thin steel plate 33 in a matrix form to form the steel bar embedded part; as shown in fig. 28 and 29.

Example 9

In this embodiment, the bottom section embedded part 1901 is a steel pipe embedded part, the built-in section steel 18 of the second bottom section 4 is a built-in i-shaped section steel, and the second bottom section 4, the second middle section 5 and the second top section 6 are square columns.

As shown in fig. 30 to 37, the prefabricated steel reinforced concrete and reinforced concrete assembled pier comprises a foundation 7, a second bottom section 4, a second middle section 5, a second top section 6 and a capping beam 8, wherein the top of the foundation 7 is connected with one end of the second bottom section 4 through a bottom anchor bolt 9, the other end of the second bottom section 4 is connected with one end of the second middle section 5, the other end of the second middle section 5 is connected with one end of the second top section 6, the second top section 6 is connected with the capping beam 8 through a top anchor bolt 10, and the top anchor bolt 10 is encapsulated in high-strength mortar of a post-cast area 25 at the top of the capping beam.

The second bottom section 4 comprises a bottom section lower steel plate 12, a bottom section embedded part 1901 is welded to the lower surface of the bottom section lower steel plate 12, the upper surface of the bottom section lower steel plate 12 is welded to a steel reinforcement framework and one end of a built-in section steel 18, the steel reinforcement framework is sleeved on the outer side of the built-in section steel 18, the height of the steel reinforcement framework is smaller than that of the built-in section steel 18, a bottom section steel connector 2201 is installed at the top end of each longitudinal steel bar 27 of the steel reinforcement framework, the built-in section steel 18, the steel reinforcement framework and the bottom section steel connector 2201 are all packaged in common concrete 24, the built-in section steel 18 is packaged on a flange plate of the common concrete 24 portion and welded with a section steel connector 20, the top end of the built-in section steel 18 protrudes out of the common concrete 24, and an injection nozzle 28 of the.

The middle section 5 of the second comprises a steel reinforcement framework, a middle section steel bar connector 2202 is installed at the top of each longitudinal steel bar 27 of the steel reinforcement framework, the steel reinforcement framework and the middle section steel bar connector 2202 are packaged in common concrete 24, a boss is arranged at the top end of the common concrete 24, a groove matched with the protruding part of the built-in section steel 18 of the second bottom section 4 is formed in the bottom end of the common concrete 24, and part of the longitudinal steel bars 27 of the steel reinforcement framework located at the groove end protrude the common concrete 24.

Second top segment 6 includes framework of steel reinforcement, and framework of steel reinforcement one end welding is installed a top anchor bolt 10 on the steel sheet 17 on the top segment, framework of steel reinforcement and top anchor bolt 10's nut encapsulates in ordinary concrete 24, and ordinary concrete 24 bottom be provided with the second in the middle of the 5 boss complex recesses of segment, be located the framework of steel reinforcement's of recess end part 27 protrusion ordinary concrete 24 settings.

The bottom section embedded part 1901 is a steel pipe embedded part, the steel pipe embedded part is composed of a steel pipe 30, a plurality of embedded part connecting pieces 21 and high-strength concrete 23, the inner wall and the outer wall of the steel pipe 30 are both welded with the plurality of embedded part connecting pieces 21, and the steel pipe 30 is filled with the high-strength concrete 23 to encapsulate the embedded part connecting pieces 21 positioned on the inner side of the steel pipe 30 in the concrete.

step 1, manufacturing an assembly, prefabricating a second bottom section 4, a second middle section 5, a second top section 6, a foundation 7 and a cover beam 8:

prefabricated second bottom section 4: manufacturing built-in section steel 18, a bottom section embedded part 1901 and a steel reinforcement framework according to design requirements, and longitudinally welding a section steel connecting piece 20 along a flange plate of the built-in section steel 18; manufacturing a bottom section embedded part 1901 according to design requirements, welding a plurality of embedded part connecting pieces 21 on the inner surface and the outer surface of a steel pipe 30, and then pouring high-strength concrete 23 in the steel pipe 30 to form the bottom section embedded part 1901; manufacturing a steel bar framework according to design requirements, binding stirrups 29 on longitudinal steel bars 27 to form the steel bar framework, welding the longitudinal steel bars 27 and the built-in section steel 18 of the steel bar framework on the bottom section lower steel plate 12, welding a bottom section embedded part 1901 below the bottom section lower steel plate 12, fixing a bottom section steel connector 2201 at the end part of the longitudinal steel bars 27, erecting a formwork and pouring common concrete 24, and packaging the built-in section steel 18, the section steel connecting part 20, the bottom section steel connector 2201, the stirrups 29 of the steel bar framework and the longitudinal steel bars 27 positioned at the outer side of the bottom section steel connector 2201 in the common concrete 24 to form a second bottom section 4;

prefabricating the second intermediate section 5: binding stirrups 29 on longitudinal reinforcements 27 to form a reinforcement framework, fixing a middle-section reinforcement connector 2202 at the end part of the longitudinal reinforcements 27 of the reinforcement framework, erecting a formwork and pouring common concrete 24, packaging the middle-section reinforcement connector 2202, the longitudinal reinforcements 27 and the stirrups 29 in the common concrete 24 to form a second middle section 5, pouring a boss in the middle of the end surface of the second middle section 5 close to the middle-section reinforcement connector 2202, pouring a groove at one end far away from the middle-section reinforcement connector 2202, and extending the end part of the longitudinal reinforcements 27 far away from one end of the middle-section reinforcement connector 2202 out of the common concrete 24;

prefabricating the second top section 6: binding stirrups 29 on longitudinal reinforcements 27 to form a reinforcement framework, welding the longitudinal reinforcements 27 of the reinforcement framework on the top section upper steel plate 17, installing and fixing the top anchor bolt 10 on the top section upper steel plate 17, supporting a formwork and pouring common concrete 24, packaging nuts of the reinforcement framework and the top anchor bolt 10 in the common concrete 24 to form a second top section 6, extending the end part of the longitudinal reinforcements 27 at one end of the second top section 6, which is far away from the top section upper steel plate 17, out of the common concrete 24, and pouring a groove in the middle of the end surface of the common concrete 24;

step 2, component installation:

pouring a foundation in situ, and supporting a template; manufacturing a lower layer of steel bars, an upper layer of steel bars and supporting steel bars, uniformly distributing and binding by using binding wires; pouring concrete to encapsulate the upper layer reinforcing steel bars, the lower layer reinforcing steel bars and the supporting reinforcing steel bars in common concrete 24, wherein the top of the bottom anchor bolt 9 protrudes out of the common concrete 24, and meanwhile, a groove is formed in the middle of the surface of the common concrete 24, so that the groove and the protruding part of the bottom anchor bolt 9 are ensured to be on the same side, and after the foundation reaches the design strength; placing the second bottom section 4 on the foundation 7, filling high-strength mortar in the groove, inserting the bottom section embedded part 1901 on the second bottom section 4 into the groove, enabling the upper bottom anchor bolt 9 of the foundation 7 to penetrate through the reserved hole of the lower steel plate 12 of the bottom section, and fixing by using a nut;

placing the second bottom section 4 on the foundation 7, enabling an upper bottom anchor bolt 9 of the foundation 7 to penetrate through a preformed hole of a lower steel plate of the bottom section, and fixing the upper bottom anchor bolt by using a nut;

step 2.2, the second middle section 5 is placed on the second top section 6, so that the convex part of the built-in steel section 18 of the second bottom section 4 is matched with the groove of the second middle section 5, and meanwhile, the longitudinal steel bar 27 extending out of the second middle section 5 is inserted into the bottom section steel bar connector 2201 of the second bottom section 4;

step 2.3, the second top section 6 is placed on the second middle section 5, the protruding boss part of the second middle section 5 is matched with the groove of the second top section 6, and meanwhile, the longitudinal steel bars 27 protruding out of the second top section 6 are inserted into the middle steel bar connector 2202 of the second middle section 5;

step 2.4, the cover beam 8 is placed on the second top section 6, and the top anchor bolt 10 of the second top section 6 penetrates through the preformed hole of the cover beam 8 and is fixed by a nut;

step 2.5, respectively injecting grouting material for connecting the steel bars into the middle section steel bar connector 2202 and the bottom section steel bar connector 2201 from bottom to top through the injection nozzles 28 of the middle section steel bar connector 2202 and the bottom section steel bar connector 2201, and fixing the longitudinal steel bars 27 at the connecting positions;

step 2.6, removing the injection nozzle 28, and plugging the injection port by using grouting material;

and 2.7, pouring high-strength mortar into the post-pouring area 25 at the top of the bent cap to form the prefabricated section steel concrete and reinforced concrete spliced pier.

Example 10

This embodiment differs from embodiment 9 in that the built-in profile steel 18 of the second bottom section 4 is a built-in cross profile steel, as shown in fig. 38 and 39.

Example 11

This embodiment differs from embodiment 9 in that the second bottom section 4, the second intermediate section 5 and the second top section 6 are cylindrical, as shown in fig. 40 to 47.

Example 12

This embodiment differs from embodiment 11 in that the built-in profile steel 18 of the second bottom section 4 is a built-in cross profile steel, as shown in fig. 48 and 49.

Claims

1. The prefabricated section steel concrete and reinforced concrete assembled pier is characterized by comprising a foundation, a first bottom section, a first middle section, a first top section and a capping beam, wherein the top of the foundation is connected with one end of the first bottom section through a bottom anchor bolt, the other end of the first bottom section is connected with one end of the first middle section through an intermediate connecting anchor bolt, the other end of the first middle section is connected with one end of the first top section through an intermediate connecting anchor bolt, the other end of the first top section is connected with the capping beam through a top anchor bolt, and the top anchor bolt is packaged in high-strength mortar in a post-cast area at the top of the capping beam;

the first top section comprises a top section lower steel plate and a top section upper steel plate, the upper surface of the top section lower steel plate is welded with a top section embedded part and one end of a steel bar framework, the top section embedded part is located at the bottom end, the other end of the steel bar framework is welded with the top section upper steel plate, and the steel bar framework is sleeved on the bottom endTop section embedded partOutside, install top crab-bolt on the steel sheet on the top segment, part the nut of framework of steel reinforcement, top crab-bolt and the nut that is located the bottomTop section embedded partThe steel bar framework is packaged in common concrete, a part of a longitudinal steel bar at the bottom end of the steel bar framework, which extends out of the common concrete, forms a section joint post-pouring area, and the first top section is a square column or a cylinder.

2. The prefabricated section steel concrete and reinforced concrete assembled pier according to claim 1, characterized in that: the bottom section embedded part, the middle section embedded part and the top section embedded part are of the same structure and are uniformly divided into a steel pipe embedded part, a profile steel embedded part and a coarse reinforcement embedded part, when the steel pipe embedded part is adopted, the steel pipe embedded part is composed of a steel pipe, a plurality of embedded part connecting pieces and high-strength concrete, the inner wall and the outer wall of the steel pipe are welded with the plurality of embedded part connecting pieces, and the high-strength concrete is filled in the steel pipe to encapsulate the embedded part connecting pieces positioned on the inner side of the steel pipe in the concrete; when the profile steel embedded part is adopted, the profile steel embedded part consists of profile steel and a plurality of embedded part connecting pieces, and the plurality of embedded part connecting pieces are welded in the longitudinal direction of the flange plate; when the steel bar embedded part is adopted, the steel bar embedded part comprises a thin steel plate and thick steel bars, the thin steel plate is welded with the thick steel bars, and the thick steel bars are distributed in a matrix form.

3. The construction process of the prefabricated section steel concrete and reinforced concrete assembled pier according to claim 1, which is characterized by comprising the following steps:

step 2, component installation:

4. The prefabricated section steel concrete and reinforced concrete assembled pier is characterized by comprising a foundation, a second bottom section, a second middle section, a second top section and a capping beam, wherein the top of the foundation is connected with one end of the second bottom section through a bottom anchor bolt, the other end of the second bottom section is connected with one end of the second middle section, the other end of the second middle section is connected with one end of the second top section, the other end of the second top section is connected with the capping beam through a top anchor bolt, and the top anchor bolt is packaged in high-strength mortar in a post-cast area at the top of the capping beam;

5. The prefabricated section steel concrete and reinforced concrete assembled pier according to claim 4, wherein: the bottom section embedded parts are steel pipe embedded parts, profile steel embedded parts and thick steel bar embedded parts, when the steel pipe embedded parts are adopted, the steel pipe embedded parts are composed of steel pipes, a plurality of embedded part connecting parts and high-strength concrete, the inner wall and the outer wall of each steel pipe are welded with the plurality of embedded part connecting parts, and the embedded part connecting parts positioned on the inner sides of the steel pipes are packaged in the concrete by filling the high-strength concrete in the steel pipes; when the profile steel embedded part is adopted, the profile steel embedded part consists of profile steel and a plurality of embedded part connecting pieces, and the plurality of embedded part connecting pieces are welded in the longitudinal direction of the flange plate; when the steel bar embedded part is adopted, the steel bar embedded part comprises a thin steel plate and thick steel bars, the thin steel plate is welded with the thick steel bars, and the thick steel bars are distributed in a matrix form.

6. The construction process of the prefabricated section steel concrete and reinforced concrete assembled pier is characterized by comprising the following steps of:

step 2, component installation:

placing the cover beam on the second top section, enabling the top anchor bolt of the second top section to penetrate through the preformed hole of the cover beam and fixing the top anchor bolt by using a nut;