Prefabricated fair-faced concrete duct piece

Abstract

The utility model belongs to the technical field of concrete prefabrication, particularly relates to a prefabricated fair-faced concrete pipe piece, and aims to overcome the defects and deficiencies in the aspect of welding of a fair-faced concrete pipe piece reinforcement cage. The prefabricated bare concrete pipe piece comprises a set-pipe-piece-shaped high-grade concrete pouring body, a hand hole is formed in the prefabricated bare concrete pipe piece, and a prefabricated reinforcement cage is arranged in the prefabricated bare concrete pipe piece and in the concrete pouring body. The prefabricated reinforcement cage at least comprises a lower-layer annular rib, a closed integral rib, an end embedded column and an embedded column above a hand hole. The machining efficiency of the steel reinforcement framework of the prefabricated pipe piece is improved, the one-time mold entering percent of pass of the steel reinforcement framework is improved, and the comprehensive production efficiency of the prefabricated fair-faced concrete pipe piece is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of prefabricated concrete, and particularly relates to a prefabricated fair-faced concrete segment. BACKGROUND

[0002] Fair-faced concrete, also known as decorative concrete, has strong decoration and does not need to be coated and wrapped with other materials after being poured and formed. Compared with the traditional concrete pouring process, it has high technical requirements for the surface flatness, smoothness, maintenance and coating during the pouring process.

[0003] Steel-concrete tower cylinder gradually becomes an optimal solution for high towers due to its advantages such as large rigidity, fast construction speed and small operation and maintenance workload. The prefabricated segments formed of high-strength concrete are connected by multiple annular bolts to form a complete ring, and the complete ring is connected in an up-down manner to form a tower cylinder base. As a permanent structure of an above-ground building, the quality of the segments directly affects the overall quality and safety of the steel-concrete tower cylinder and influences the durability thereof.

[0004] A production process for prefabricated reinforced concrete segments is disclosed in Chinese Patent No. CN 117484643 A, which comprises the following steps: determining the mixing amount of each component in the raw materials of concrete according to the predetermined water-binder ratio and theoretical amount of cementitious materials, and then mixing to obtain concrete; first, according to the order of stirrups, bottom bars and face bars, a steel cage is bound and welded, and then, according to the order of core rod reinforcement, ear bars, pull hook reinforcement, waist bars, end cap reinforcement and small reinforcement, a steel framework is bound and welded; first, a formwork is installed on the outer side of the steel framework, and then, according to the reserved hole position of the formwork, embedded parts and spring bars are installed on the steel framework, and then the concrete is poured into the formwork, the formwork is removed, and the prefabricated segment with embedded holes is obtained after curing.

[0005] However, the above technical solution has the following defects: (1) Since the steel cage of the segment is composed of multiple types of steel bars, all the steel bars are gradually bound and formed by hand, which completely relies on the technical level of the operator, and on the one hand, the quality is difficult to guarantee, and on the other hand, the efficiency of steel cage welding and molding is low.

[0006] Compared with ordinary prefabricated reinforced concrete segments, the fair-faced concrete segment prefabrication process has higher requirements, and the defects and deficiencies in steel cage welding need to be solved. UTILITY MODEL CONTENTS

[0007] In order to solve the above problems in the prior art, i.e. the defects and deficiencies in the steel cage welding of the fair-faced concrete segment, the utility model provides a prefabricated fair-faced concrete segment.

[0008] The technical scheme of the utility model comprises:

[0009] A prefabricated fair-faced concrete segment comprises a high-grade concrete pouring body in the shape of a segment, and a hand hole is arranged in the prefabricated fair-faced concrete segment, characterized in that a prefabricated reinforcement cage is arranged in the concrete pouring body, and the prefabricated reinforcement cage at least comprises a lower annular reinforcement, a closed integral reinforcement, an end hidden column and a hidden column above the hand hole.

[0010] As an alternative technical solution, the prefabricated reinforcement cage further comprises a stirrup of the annular reinforcement at the hand hole, which is in a semi-closed structure and is welded into an integral closed structure by using intelligent CO2 gas shielded welding during installation.

[0011] As an alternative technical solution, the end hidden column is provided with a sleeve, and the sleeve is provided with a spring reinforcement and a bent reinforcement.

[0012] As an alternative technical solution, a stirrup is arranged on the annular reinforcement at the hidden column above the hand hole.

[0013] As an alternative technical solution, a lifting point reinforcing reinforcement is further arranged on the prefabricated reinforcement cage.

[0014] As an alternative technical solution, a drag hook is further arranged on the prefabricated reinforcement cage.

[0015] As an alternative technical solution, the surface of the prefabricated fair-faced concrete segment further comprises a surface smoothing layer subjected to smoothing treatment.

[0016] As an alternative technical solution, the surface of the prefabricated fair-faced concrete segment is provided with a plurality of embedded parts and bolt connection holes.

[0017] As an alternative technical solution, a drainage groove is arranged at the outer end surface of the prefabricated fair-faced concrete segment.

[0018] As an alternative technical solution, a plurality of operation holes are arranged on the inner side surface of the prefabricated fair-faced concrete segment.

[0019] The prefabricated fair-faced concrete segment has the following beneficial effects:

[0020] The steel reinforcement framework structure of the prefabricated fair-faced concrete segment is optimized, the structure of the steel reinforcement framework is disassembled, and a grouping assembly method is adopted, so that the processing efficiency of the steel reinforcement framework is accelerated, the first-time entering-mold qualification rate of the steel reinforcement framework is improved, the rework rate of the steel reinforcement framework process is reduced, and the comprehensive production efficiency of the prefabricated fair-faced concrete segment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the accompanying drawings.

[0022] Figure 1 is a structural schematic diagram of the prefabricated fair-faced concrete segment of the utility model;

[0023] Figure 2 is a structural schematic diagram of the steel reinforcement cage structure of the prefabricated fair-faced concrete segment of the utility model;

[0024] Figure 3 is a structural schematic diagram of the end of the hoop reinforcement;

[0025] Figure 4 is a structural schematic diagram of the hand hole reinforcement.

[0026] Reference signs:

[0027] 1-prefabricated concrete segment; 2-bolt connection hole; 3-operation hole; 4-embedded part; 5-drainage groove; 6-hoop reinforcement; 7-longitudinal hook reinforcement; 8-tie reinforcement; 9-end hidden column; 10-hidden column above the hand hole; 11-hoop reinforcement hoop at the hand hole; 12-spring reinforcement at the sleeve; 14-bent-up reinforcement at the sleeve. DETAILED DESCRIPTION

[0028] The application will be described in further detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description.

[0029] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and embodiments.

[0030] The utility model provides a kind of prefabricated fair-faced concrete segment.

[0031] Figure 1 As shown in the utility model's prefabricated fair-faced concrete segment's structural schematic diagram, prefabricated concrete segment 1 is provided with operation hole 3 and embedded part 4 on inner surface, bolt connection hole 2 is provided on side surface, and drainage groove 5 is provided at outer end face.

[0032] Figure 2 、 Figure 3 、 Figure 4 As shown in the structural schematic diagram of the prefabricated steel reinforcement cage of the utility model, it specifically includes:

[0033] The processing of steel reinforcement cage includes steel reinforcement raw material inspection and submission, steel reinforcement blanking, main reinforcement forming, hidden column steel reinforcement cage binding, steel reinforcement cage forming, steel reinforcement cage self-inspection, steel reinforcement cage quality inspection, unqualified rectification, and qualified standby.

[0034] Reinforcing cage welding: split segmental segment reinforcing cage is split, mainly including upper and lower layer ring-shaped reinforcement 6, upper and lower layer longitudinal hook-shaped reinforcement 7, tie reinforcement 8, end hidden column 9, hand hole upper hidden column 10, hand hole longitudinal hook-shaped reinforcement, hand hole ring-shaped reinforcement hoop 11, draw hook, spring reinforcement 12 at sleeve and bent reinforcement 14 at sleeve, lifting point reinforcing bar and the like.

[0035] According to the split steel, classified processing is carried out, and the steel raw material is processed into semi-finished products through straightening, shearing, hoop bending, arc bending, bending and spring winding processes.

[0036] Among them, the upper and lower layer longitudinal U-shaped reinforcement is spot-welded into a closed whole reinforcement according to the segment thickness requirement, and the end hidden column 9 and the hand hole upper hidden column 10 are mainly formed by four hook-shaped reinforcements and hoop reinforcements according to the segment thickness and the angle of the hand hole.

[0037] The specific processing method includes:

[0038] Firstly, the lower layer ring-shaped reinforcement is placed according to the positioning card point of the steel mold frame;

[0039] Secondly, the closed whole reinforcement is vertically spot-welded on the lower layer ring-shaped reinforcement according to the longitudinal positioning point of the steel mold frame;

[0040] Thirdly, the end hidden column 9 and the hand hole upper hidden column 10 are placed and tied with the lower layer ring-shaped reinforcement, and there is one set of each on both sides;

[0041] Fourthly, the hand hole longitudinal hook-shaped reinforcement is placed, and the upper layer ring-shaped reinforcement is placed, and the closed whole reinforcement, the end hidden column 9 and the hand hole upper hidden column are tied;

[0042] Fifthly, the hoop 11 of the hand hole ring-shaped reinforcement is installed, which is a semi-closed type and is welded into a whole after installation, and intelligent CO2 gas shielded welding is adopted;

[0043] Sixthly, the draw hook, the spring reinforcement 12 at the sleeve and the bent reinforcement 14 at the sleeve, and the lifting point reinforcing bar are installed to form the reinforcing cage;

[0044] Seventhly, the steel group pastes the mark, and after internal quality inspection, the quality inspector inspects and accepts it to be qualified and then marks it.

[0045] In the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In addition, it also needs to be explained that, in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0047] The term "includes" or any other similar term is intended to cover non-exclusive inclusion, so that the process, method, article or equipment / device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in the process, method, article or equipment / device.

[0048] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without deviating from the principles of the utility model, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical scheme after the changes or replacements will fall within the protection scope of the utility model.

Claims

1. A precast fair-faced concrete segment comprising a segment-shaped cast body of high-grade concrete, a hand hole being provided in the precast fair-faced concrete segment, characterized in that: The prefabricated fair-faced concrete segment is provided with a prefabricated reinforcement cage in the concrete pouring body, and the prefabricated reinforcement cage at least comprises a lower annular reinforcement, a closed integral reinforcement, an end hidden column and a hand hole upper hidden column.

2. A precast fair-faced concrete segment as claimed in claim 1, characterised in that: The prefabricated reinforcement cage further comprises a hoop reinforcement of the annular reinforcement at the hand hole, which is a semi-closed structure and is welded into an integral closed structure by using intelligent CO2 gas shielded welding during installation.

3. A precast fair-faced concrete segment as defined in claim 2, wherein: The end hidden column is provided with a sleeve, and the sleeve is provided with spring reinforcement and bent reinforcement.

4. A precast fair-faced concrete segment as defined in claim 3, wherein: The annular reinforcement at the hand hole upper hidden column is provided with a hoop reinforcement.

5. A precast fair-faced concrete segment as defined in claim 4, wherein: The prefabricated reinforcement cage is further provided with a lifting point reinforcing reinforcement.

6. A precast fair-faced concrete segment as claimed in claim 5, characterised in that: The prefabricated reinforcement cage is further provided with a drag hook.

7. A precast fair-faced concrete segment as defined in claim 1, wherein: The surface of the prefabricated fair-faced concrete segment further comprises a surface smoothing layer subjected to smoothing treatment.

8. A precast fair-faced concrete segment as defined in claim 1, wherein: The surface of the prefabricated fair-faced concrete segment is provided with a plurality of embedded parts and bolt connection holes.

9. A precast fair-faced concrete segment as defined in claim 1, wherein: The outer end surface of the prefabricated fair-faced concrete segment is provided with a drainage groove.

10. A precast fair-faced concrete segment as defined in claim 1, wherein: The inner side surface of the prefabricated fair-faced concrete segment is provided with a plurality of operation holes.

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