CN114396117A - Precast concrete member, precast concrete assembly and splicing method thereof - Google Patents

Precast concrete member, precast concrete assembly and splicing method thereof Download PDF

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Publication number
CN114396117A
CN114396117A CN202111356322.6A CN202111356322A CN114396117A CN 114396117 A CN114396117 A CN 114396117A CN 202111356322 A CN202111356322 A CN 202111356322A CN 114396117 A CN114396117 A CN 114396117A
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CN
China
Prior art keywords
precast concrete
bar
longitudinal
splicing
hole
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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.)
Pending
Application number
CN202111356322.6A
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Chinese (zh)
Inventor
初明进
初前进
李永兴
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.)
Shandong Aike Fujian Architectural Technology Co ltd
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Shandong Aike Fujian Architectural Technology 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
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Application filed by Shandong Aike Fujian Architectural Technology Co ltd filed Critical Shandong Aike Fujian Architectural Technology Co ltd
Priority to CN202111356322.6A priority Critical patent/CN114396117A/en
Publication of CN114396117A publication Critical patent/CN114396117A/en
Priority to PCT/CN2022/131427 priority patent/WO2023088190A1/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
    • E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
    • E04B1/043—Connections specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
    • E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
    • E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E04B1/6801—Fillings therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/18—Spacers of metal or substantially of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The invention provides a precast concrete member, a precast concrete assembly and a splicing method thereof. The precast concrete member comprises a connecting end, and the connecting end comprises an accommodating part and a connecting steel bar accommodated in the accommodating part; the accommodating part comprises a transverse hole, or a transverse hole and a longitudinal hole which are communicated with each other, the opening of the transverse hole is arranged on the connecting end surface of the connecting end, and the opening of the longitudinal hole is arranged on the top surface of the connecting end; the connecting reinforcing steel bar comprises a first side close to the connecting end surface; wherein, the connecting reinforcement can move in the accommodating part to set up in the accommodating part with the tilt state or horizontal state, when the connecting reinforcement sets up in the accommodating part with horizontal state, first side stretches out outside the connecting end face. The precast concrete member has simple structure and convenient construction.

Description

Precast concrete member, precast concrete assembly and splicing method thereof
Technical Field
The invention relates to the technical field of building engineering, in particular to a precast concrete member, a precast concrete assembly and a splicing method thereof.
Background
In order to solve the problems of low construction speed and dirty and messy construction site caused by the traditional construction mode of firstly binding reinforcing steel bars and then pouring concrete, the construction industry implements an assembly type construction mode.
The construction of prefabricated components in the prefabricated concrete structure determines the efficiency and the benefit of the structure, and the performance of horizontal joints and vertical joints among the prefabricated components determines the overall performance of the structure. The key technology of connecting and assembling the integral structure by the steel bars at the joints among the precast concrete components. In the prior art, two technical schemes are generally adopted: one is that the prefabricated component stretches out the connecting steel bar, the efficiency of manufacture, transportation and installation is low, and the benefit is poor; the other technical scheme is a laminated slab shear wall, although the prefabricated parts do not have ribs, the joints are provided with post-cast strips, and the construction is complex.
The joint between the prefabricated parts adopts the close splicing joint connection technology, so that the efficiency is high, the construction is convenient, and how to set the connecting steel bars is a key technology. The prior art has no good scheme, and is complex in construction, time-consuming and labor-consuming.
Disclosure of Invention
In order to solve one of the problems of the prior art described above, a first object of the present invention is to provide a precast concrete member. The connecting end comprises an accommodating part and a connecting steel bar accommodated in the accommodating part;
the accommodating part comprises a transverse hole, or a transverse hole and a longitudinal hole which are communicated with each other, an opening of the transverse hole is formed in the connecting end face of the connecting end, an opening of the longitudinal hole is formed in the top face of the connecting end, and the connecting steel bar comprises a first side close to the connecting end face;
wherein the connection bar is movable in the receiving portion so as to be disposed in the receiving portion in an inclined state or a horizontal state, and when the connection bar is disposed in the receiving portion in the horizontal state, the first side protrudes out of the connection end surface.
In some embodiments of the present invention, the precast concrete unit further includes a first longitudinal rib located outside the connection end plane.
In some embodiments of the present invention, the first longitudinal bar is connected to the first side, and the first longitudinal bar is movable so that the connection bar is disposed in the receiving portion in an inclined state or a horizontal state;
wherein, in an inclined state, the first longitudinal rib contacts the connecting end surface;
in a horizontal state, the first longitudinal rib is far away from the connecting end face.
In some embodiments of the present invention, the precast concrete unit further includes a second longitudinal bar disposed in the longitudinal hole along a length direction of the longitudinal hole, the connecting bar further includes a second side far away from the connecting end surface, the connecting bar is connected to the second longitudinal bar, and the second side can move up and down along the length direction of the second longitudinal bar, so that the connecting bar is disposed in the accommodating portion in an inclined state or a horizontal state.
In some embodiments of the invention, the second longitudinal bar is provided with a first limiting part, and when the second side moves to the first limiting part, the connecting steel bar is horizontally arranged in the accommodating part.
In some embodiments of the present invention, the precast concrete unit further includes a third longitudinal bar disposed in the longitudinal hole along a length direction of the longitudinal hole, the connecting bar further includes a second side far from the connecting end surface, the third longitudinal bar is connected to the second side, and the third longitudinal bar can move up and down, so that the connecting bar is disposed in the accommodating portion in an inclined state or a horizontal state.
In some embodiments of the present invention, a second limiting component is disposed on the third longitudinal rib.
In some embodiments of the present invention, the connecting reinforcing bar further includes a second side far away from the connecting end surface, the second side includes a sliding portion, a sliding groove is formed in a bottom surface of the transverse hole or a length direction of the longitudinal hole, and the sliding portion is slidably disposed in the sliding groove, so that the connecting reinforcing bar is disposed in the accommodating portion in an inclined state or a horizontal state.
In some embodiments of the invention, a third limiting part is arranged in the sliding groove, and when the second side slides to the third limiting part, the connecting steel bar is arranged in the accommodating part in a horizontal state.
A second object of the present invention is to provide a precast concrete assembly including the precast concrete unit described above.
In some embodiments of the invention, the precast concrete assembly further comprises a precast concrete splice member mated with the precast concrete member.
In some embodiments of the invention, the precast concrete splicing member comprises a splicing hole, and the sum of the depth of the splicing hole and the depth of the transverse hole is greater than the length of the connecting steel bar.
The third purpose of the invention is to provide a splicing method of the precast concrete component, which comprises the following steps:
adjusting the connecting steel bars of the precast concrete members from an inclined state to a horizontal state so that the first sides of the connecting steel bars extend into the connecting members;
and pouring concrete into the accommodating part to fixedly connect the precast concrete member and the connecting member together.
A fourth object of the present invention is to provide another splicing method of the precast concrete component, which comprises:
arranging the connecting end surface of the precast concrete member and the splicing end surface of the precast concrete splicing member in an opposite manner;
adjusting the connecting steel bars of the precast concrete members from an inclined state to a horizontal state, so that the first sides of the connecting steel bars extend into the splicing holes; and
and pouring concrete into the accommodating part of the precast concrete member and the splicing hole of the precast concrete splicing member, so that the precast concrete member and the precast concrete splicing member are fixedly connected together.
The precast concrete member has a simple structure, the connecting steel bars are arranged in the accommodating part after the precast concrete member is manufactured, the precast concrete member is not interfered, and the connecting steel bars are not required to be arranged on site on the construction site, so that the field workload is reduced. In the transportation and hoisting processes, the connecting steel bars are accommodated in the accommodating parts, do not occupy volume and are not collided; during construction, the connecting steel bars can be connected with other connecting components only by being adjusted to be in a horizontal state, and the process is simple. The connecting steel bars are obliquely arranged in the accommodating part in the stages of manufacturing, transporting and the like, so that the space of the accommodating part is greatly reduced, for example, the depth of a transverse hole is reduced, the aperture ratio of a precast concrete member is reduced, and the post-cast concrete amount is reduced.
The connecting steel bar of the invention has a tendency of being adjusted to a horizontal state under the action of the self weight of the connecting steel bar in an inclined state, so that the connecting steel bar is adjusted to the horizontal state from the inclined state to have certain automaticity, namely, the connecting steel bar is slightly disturbed, such as a vibration precast concrete component or the connecting steel bar, the connecting steel bar can be adjusted to the horizontal state from the inclined state, and the connecting steel bar has the performance of automatically positioning. The characteristic facilitates the arrangement of the connecting steel bars among the prefabricated components, and is particularly suitable for the arrangement of the connecting steel bars during the close splicing connection among the prefabricated concrete components.
By adopting the technology of the invention, the connecting steel bars are arranged in the precast concrete components at one side of the joint and then extend into the precast concrete components at the other side of the joint, and the connecting steel bars have the automatic in-place performance, so that the automatic installation of the connecting steel bars is realized, and the invention is very convenient and rapid. The invention also provides various different reinforcing steel bars matched with the connecting reinforcing steel bars, so that the connecting reinforcing steel bars can be very simply and conveniently pulled out of the accommodating parts, and the construction safety and speed are greatly improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1(a) and 1(b) illustrate a precast concrete unit according to an embodiment of the present invention, in which connection bars are disposed in the lateral holes in an inclined state in fig. 1(a), and in a horizontal state in fig. 1 (b).
Fig. 2 illustrates a precast concrete splicing member provided by an embodiment of the present invention.
Fig. 3 shows a precast concrete member provided by another embodiment of the present invention.
Fig. 4(a) and 4(b) illustrate a precast concrete unit according to still another embodiment of the present invention, in which connection bars are disposed in the receiving part in an inclined state in fig. 4(a), and fig. 4(b) is a partial sectional view of fig. 4 (a).
Fig. 5 illustrates a precast concrete splicing member provided by another embodiment of the present invention.
Fig. 6(a) and 6(b) illustrate a splicing process of a precast concrete unit and a precast concrete splicing unit according to an embodiment of the present invention.
Fig. 7 shows a precast concrete member provided by still another embodiment of the present invention.
Fig. 8 illustrates a precast concrete member provided by still another embodiment of the present invention.
Fig. 9(a) and 9(b) illustrate a precast concrete member according to still another embodiment of the present invention, in which connection bars are disposed in the receiving part in an inclined state in fig. 9(a), and the connection bars are disposed in the receiving part in a horizontal state in fig. 9 (b).
Fig. 10 shows a longitudinal rib provided in an embodiment of the present invention.
Fig. 11 illustrates a connecting reinforcement bar according to an embodiment of the present invention.
Fig. 12 shows a connecting reinforcement according to a further embodiment of the present invention.
Fig. 13(a) and 13(b) illustrate a precast concrete member including the connection bars of fig. 11 according to still another embodiment of the present invention, in which the connection bars are disposed in the receiving part in an inclined state in fig. 13(a) and the connection bars are disposed in the receiving part in a horizontal state in fig. 13 (b).
Fig. 14 shows a precast concrete member provided by still another embodiment of the present invention.
Fig. 15(a) and 15(b) illustrate a precast concrete member according to still another embodiment of the present invention, in which connection bars are disposed in an inclined state in a receiving part in fig. 15(a), and connection bars are disposed in a horizontal state in a receiving part in fig. 15 (b).
Fig. 16 shows a partial structure of a precast concrete element according to still another embodiment of the present invention.
Fig. 17 shows a precast concrete member provided by still another embodiment of the present invention.
Fig. 18 shows a precast concrete member provided by still another embodiment of the present invention.
Fig. 19 shows a precast concrete member provided by still another embodiment of the present invention.
Fig. 20 shows a precast concrete member provided by still another embodiment of the present invention.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
The terms "first," "second," and the like, in the present disclosure, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
It should be noted that, unless otherwise explicitly stated or limited, the terms "connected" and "connected" in the present invention are to be interpreted broadly, and may be, for example, a fixed connection, a flexible connection, a detachable connection, or an integral connection, and also include the case where the two are in contact with each other; may be a mechanical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
The following detailed description of the present invention, taken in conjunction with the accompanying drawings and examples, is provided to enable the invention and its various aspects and advantages to be better understood. However, the specific embodiments and examples described below are for illustrative purposes only and are not limiting of the invention.
Fig. 1(a) and 1(b) show a precast concrete unit 100 according to the present invention, which includes a connection end (i.e., an end of the precast concrete unit connected to other precast concrete units or cast-in-place concrete), the connection end having a connection end surface 101 on which a receiving portion, in this embodiment, a transverse hole 102, is formed. The transverse hole 102 is a hole that opens on the connecting end surface 101 and extends substantially in the horizontal direction. The transverse holes may be parallel to the horizontal or may be at an angle (in the range of 0 to 90 degrees, inclusive) to the horizontal. In the present invention, the transverse hole 102 may be a through hole or a non-through hole, and may be set as needed.
The connecting bars 103 are received in the transverse holes 102. The term "contain" as used herein means "partially or completely located", i.e. the connection bars 103 are contained in the transverse holes 102 means that the connection bars 103 are partially or completely located in the transverse holes 102. Wherein the connection bar 103 comprises a first side 103a adjacent to the connection end surface 101. The connector bar 103 in this embodiment is a rectangular bar loop and therefore also has a second side 103b remote from the end face of the connector. It should be noted that the connecting bar 103 may have other shapes, and it is not necessary to have a second side (for example, "]") in the present invention, as long as the relevant effect can be achieved.
In the present invention, the connection bar 103 is movable within the lateral hole 102 so as to be disposed in the lateral hole 102 in an inclined state (fig. 1(a)) or a horizontal state (fig. 1 (b)). When the connecting steel bar 103 is arranged in the transverse hole 102 in an inclined state, the first side 103a is positioned in the transverse hole 102; when the connection bar 103 is disposed in the lateral hole 102 in a horizontal state, the first side 103a protrudes out of the connection end surface 101. It should be noted that, in other embodiments of the present invention, when the connecting steel bar 103 is disposed in the transverse hole 102 in an inclined state, the first side 103a is located outside the transverse hole 102; when the connection bar 103 is disposed in the lateral hole 102 in a horizontal state, the first side 103a protrudes beyond the connection end surface 101 by a greater length.
In this embodiment, the connecting steel bars 103 are installed after the concrete part of the precast concrete member 100 is manufactured, which facilitates the manufacture of the precast concrete member 100; in the transport state, the connecting bars 103 are disposed in the transverse holes 102 in an inclined state. During construction, the connecting steel bars 103 are adjusted to be in a horizontal state, so that the method is very convenient and fast; since the connecting bars 103 have a tendency to change from an inclined state to a horizontal state under their own weight, indirect disturbance (e.g., vibration of the precast concrete member) can also adjust the connecting bars 103 to the horizontal state, so that the connecting bars 103 have a capability of automatically adjusting to the horizontal state. In this embodiment, the precast concrete unit 100 is provided with only the lateral holes, and the open structure is simplified.
The precast concrete unit 100 in this embodiment may be spliced with cast-in-place concrete during construction, or may be spliced with the precast concrete splicing member 200 shown in fig. 2.
The precast concrete splicing member 200 comprises a splicing hole 201, which is also a transverse hole in this embodiment, and which may have other configurations in other embodiments of the present invention. The width of the joint between the precast concrete member 100 and the precast concrete splicing member 200 can be 0-20mm, namely, a close splicing technology is adopted between the precast concrete member 100 and the precast concrete splicing member 200; the width of the joint between the precast concrete member 100 and the precast concrete splicing member 200 can be larger than 20 mm; preferably, a close-fitting joint is formed between the precast concrete unit 100 and the precast concrete splicing unit 200. The sum of the depth of the splicing hole 201, the depth of the transverse hole 102 and the width of the splicing seam is 0-20mm (the length in the horizontal direction in the embodiment) or 20-200 mm larger than the length of the connecting steel bar 103.
When the prefabricated concrete member 100 is spliced with cast-in-place concrete, the connecting steel bars 103 of the prefabricated concrete member 100 are adjusted from an inclined state to a horizontal state, the first sides 103a of the connecting steel bars 103 extend out of the connecting end surfaces 101, and then post-cast concrete is poured to connect the prefabricated concrete member 100 and the cast-in-place concrete together to form an assembly.
When the prefabricated concrete splicing member 200 is spliced, the connecting end surface 102 of the prefabricated concrete member 100 is arranged opposite to the splicing end surface 202 of the prefabricated concrete splicing member 200; adjusting the connecting steel bars 103 of the precast concrete member 100 from an inclined state to a horizontal state, so that the first sides 103a of the connecting steel bars 103 extend out of the connecting end surface 101 and extend into the splicing holes 201; since the connecting reinforcement 103 has a tendency to change from an inclined state to a horizontal state under its own weight, the indirect disturbance can also turn the connecting reinforcement 103 to a horizontal state; thus, even if the width of the joint between the precast concrete segment 200 and the precast concrete segment 100 is 0, which results in no operation space and no direct contact with the connecting steel bars, the connecting steel bars 103 may be disturbed to be adjusted from the inclined state to the horizontal state, for example, the precast concrete segment 100 may be vibrated; therefore, the connecting steel bars 103 for connecting the precast concrete splicing component 200 with the precast concrete component 100 have the automatic in-place performance, the automatic installation of the connecting steel bars is realized, and the method is very convenient and fast. And then pouring concrete into the transverse holes 102 of the precast concrete units 100 and the splicing holes 201 of the precast concrete splicing members 200, so that the precast concrete units 100 and the precast concrete splicing members 200 are fixedly connected together to form a precast concrete assembly. In order to facilitate the concrete pouring at the joints and in the transverse holes, the transverse holes can be inclined at a certain angle.
As shown in fig. 3, the precast concrete member 100 shown in fig. 1 may further include a first longitudinal rib 104. The first longitudinal rib 104 is located outside the connecting end surface 101, and the first longitudinal rib 101 is connected to the first side 103 a. The connection may be fixed or non-fixed.
When the connection is not fixed, the first longitudinal bar 104 can abut against the connection bar 103, so that the connection bar 103 does not extend out of the transverse hole 103, and is placed in the transverse hole 102 in an inclined state. In this case, the first longitudinal rib 104 may be directly removed during the construction, and then the subsequent construction process may be performed as described above. According to the technical route of the embodiment, other measures can be adopted to abut against the connecting bar 103, such as blocking the transverse hole 102 with a rigid plate
When fixedly connected, the first longitudinal bar 104 can move (for example, move horizontally), so that the connecting bar 103 is disposed in the transverse hole 102 in an inclined state or a horizontal state. Wherein, in the inclined state, the first longitudinal rib 104 contacts the connecting end surface 101; in the horizontal state, the first longitudinal rib 104 is away from the connecting end surface 101. During construction, the state of the connection 103 can be adjusted through the first longitudinal ribs 104, and then the connection is spliced with other cast-in-place concrete splicing members or prefabricated splicing members (for example, the connection ends of the cast-in-place concrete splicing members or the prefabricated splicing members are provided with longitudinal grooves).
Fig. 4(a) and 4(b) show another precast concrete unit 400 of the present invention, which is different from the precast concrete unit 100 shown in fig. 1(a) and 1(b) in that the connection end of the precast concrete unit 400 further includes a longitudinal hole 404 communicating with the transverse hole 402 (i.e., the transverse hole 402 and the longitudinal hole 404 whose accommodation portions are intersected), and the opening of which is provided on a surface 405 perpendicular to the connection end surface 401. In another embodiment of the present invention, the surface 405 may not be perpendicular to the connection end surface 401. In the present invention, the longitudinal hole 404 may be a through hole or a non-through hole, and the embodiment is a through hole (as shown in fig. 4 (b)). At this time, the connecting bars 403 are received in the transverse holes 402 and the longitudinal holes 404. In other embodiments of the invention, the connecting bars 403 may also be received only in the transverse holes 402 or only in the longitudinal holes 404.
In this embodiment, the connecting bars 403 are disposed in the transverse holes 402 and the longitudinal holes 404 in an inclined state in the transportation state. During construction, the connecting steel bar 403 is adjusted to be horizontal.
Similar to the embodiment shown in fig. 1(a) and 1(b), the precast concrete unit 400 in this embodiment may be constructed to be spliced with cast-in-place concrete, or may be spliced with the precast concrete splicing member 200 shown in fig. 2 or the precast concrete splicing member 500 shown in fig. 5.
The precast concrete splicing member 500 comprises a splicing hole 501, which in this embodiment is also an intersecting transverse hole and longitudinal hole. In other embodiments of the present invention, the splice hole 501 may comprise only transverse holes.
When the prefabricated concrete component is spliced with cast-in-place concrete, the connecting steel bars 403 of the prefabricated concrete component 400 are adjusted to be in a horizontal state from an inclined state, the first sides 403a of the connecting steel bars 403 extend out of the connecting end surface 401, the cast-in-place concrete is poured, concrete is poured into the transverse holes, and the prefabricated concrete component 400 and the connecting component are fixedly connected together to form the prefabricated concrete component.
When the prefabricated concrete splicing member 500 is spliced, the connecting end surface 402 of the prefabricated concrete member 400 is arranged opposite to the splicing end surface 502 of the prefabricated concrete splicing member 500; pulling the connecting steel bars 403 of the precast concrete member 400 from an inclined state to a horizontal state, so that the first sides 403a of the connecting steel bars 403 extend out of the connecting end surface 401 and extend into the splicing holes 501; and then pouring concrete into the transverse holes 402 of the precast concrete units 400 and the splicing holes 501 of the precast concrete splicing members 500, so that the precast concrete units 400 and the precast concrete splicing members 500 are fixedly connected together to form a precast concrete assembly.
Fig. 6(a) and 6(b) illustrate a splicing process of the precast concrete member 400 shown in fig. 4(a) and 4(b) with the precast concrete splicing member 200 shown in fig. 2. In fig. 6(a), the connecting bars 403 are in an inclined state, and in fig. 6(b), the connecting bars 403 are in a horizontal state and extend into the splicing holes 201 of the precast concrete splicing member 200. In order to facilitate the concrete pouring in the splicing hole 201, the splicing hole may be inclined at a certain angle. By adopting the precast concrete member connection structure shown in fig. 6(a) and 6(b), cast-in-place concrete is poured through the longitudinal hole 404 of the precast concrete member 400, the splicing hole 201 is filled with concrete, splicing of the precast concrete members is realized, the aperture ratio of the precast concrete members is reduced to the maximum extent, cast-in-place concrete is convenient to pour, and the splicing hole 201 is easily filled with concrete.
As shown in fig. 7, the precast concrete member 400 shown in fig. 4 may further include a first longitudinal rib 406. The connection manner, function and construction method of the first longitudinal rib 406 are similar to those of the first longitudinal rib 104 shown in fig. 3, and are not described herein again.
As shown in fig. 8, the precast concrete unit 400 shown in fig. 4 may further include second longitudinal bars 407, and the number of the second longitudinal bars 407 is at least 1. The second longitudinal bar 407 is disposed in the longitudinal hole 404 along the length direction of the longitudinal hole 404, and the connecting bar 403 is connected to the second longitudinal bar 407. In this embodiment, the second longitudinal rib 407 is disposed within the longitudinal hole 404. A second side 403b of the connecting bar 403, which is far from the connecting end surface 401, can move up and down along the length direction of the second longitudinal bar 407, so that the connecting bar 403 is disposed in the transverse hole 402 and the longitudinal hole 404 in an inclined state or a horizontal state.
The second longitudinal bar 407 may be provided with a first position-limiting part (not shown), and when the second side moves to the first position-limiting part, the connecting bar 403 is horizontally disposed in the transverse hole 402 and the longitudinal hole 404. The first stopper is to position the connection bar 403 and prevent the second side 403b of the connection bar 403 from being displaced downward beyond the horizontal position.
As shown in fig. 9(a) and 9(b), the precast concrete unit 400 shown in fig. 4(a) and 4(b) may further include a third longitudinal rib 408, and the number of the third longitudinal ribs 408 is 1 or 2 or more. The third longitudinal rib 408 is disposed within the longitudinal bore 404 along the length of the longitudinal bore 404. in this embodiment, the third longitudinal rib 408 is movably disposed within the longitudinal bore 404. The third longitudinal rib 408 is connected to a second side 403b of the connecting reinforcement 403 far from the connecting end surface 401, and the third longitudinal rib 408 can move up and down to drive the connecting reinforcement 403 to be disposed in the transverse hole 402 and the longitudinal hole 404 in an inclined state (fig. 9(a)) or a horizontal state (fig. 9 (b)). That is, the upper end (or the lower end) of the third longitudinal bar 408 is pulled to be away from the precast concrete member 400, so as to drive the connecting steel bar 403 to be in an inclined state; the upper end (or the lower end) of the third longitudinal bar 408 is moved to approach the precast concrete unit 400, and the connecting steel bar 403 is driven to be in a horizontal state until the horizontal state. Thus, the connecting steel bars 403 and the longitudinal bars 408 are linked, the connecting steel bars 403 can be adjusted to a required position without directly contacting the connecting steel bars 403, and the connecting steel bars are convenient to arrange; in actual engineering, the connecting reinforcing steel bars are arranged at the same joint, and the connecting reinforcing steel bars do not need to be arranged one by adopting the technology of the embodiment.
The third longitudinal rib 408 may also be provided with a limiting member (e.g., the second limiting member 408a shown in fig. 10, the second limiting member 408a may be a short steel bar). When the third longitudinal bar 408 is pulled, the second limiting member 408a can hook the connecting bar 403 to adjust the connecting bar to be in an inclined or horizontal state. Of course, the third longitudinal rib may be fixedly connected to the second side 403b, or connected in other ways, as long as the relevant effect can be achieved.
As shown in fig. 11, 13(a) and 13(b), the second side 403b of the connecting bar 403 of the precast concrete unit 400 shown in fig. 4(a) and 4(b) may include a sliding portion a, and in this case, a sliding groove 404a is formed in the longitudinal hole 404 in the length direction. The sliding portion a is slidably disposed in the sliding groove 404a, so that the connecting bar 403 is disposed in the transverse hole 402 and the longitudinal hole 404 in an inclined state (fig. 13(a)) or a horizontal state (fig. 13 (b)). The sliding portion a of fig. 11 is separately coupled to the coupling bar 403, and the sliding portion a1 of fig. 12 is formed by extending the second side 403b of the coupling bar 403.
Note that the precast concrete member 100 shown in fig. 1(a) and 1(b) or fig. 3 may be provided with a slide groove 404a and a second side 403b including the sliding portion a like those shown in fig. 13. Wherein the sliding groove can be disposed on the bottom surface of the transverse hole 102. The rest is similar to fig. 13(a) and 13(b), and is not described again. A sliding groove 404a is formed in the longitudinal hole 404 in the length direction, so that the second side 403b of the connecting steel bar 403 is at a designated position, and the position of the connecting steel bar 403 is in a controllable state, for example, the connecting steel bar cannot fall off during transportation, and the length of the connecting steel bar extending out of the precast concrete member 400 is a fixed value when the connecting steel bar is adjusted to be in a horizontal state; particularly, the position of the connecting steel bar 403 can be controlled without a longitudinal bar connected with the connecting steel bar, for example, the connecting steel bar 403 cannot fall off, and the longitudinal bar can be saved.
A third stop member B (shown in fig. 14) may be disposed in the slide groove 404 a. When the second side 403B slides to the third stopper B, the connecting bars 403 are horizontally disposed in the transverse holes 402 and the longitudinal holes 404. The third stop member B may be a concrete block.
Fig. 15(a) and 15(b) show a slide groove 404b in another embodiment of the present invention, which is disposed at a different position from the slide groove 404a, wherein the connecting bar 403 is in an inclined state in fig. 15(a) and in a horizontal state in fig. 15 (b). Fig. 16 shows a runner 404c and connecting bars having a sliding portion a2 different from the sliding portion A, A1 shown in fig. 10 and 11 in another embodiment of the invention.
In the present invention, the precast concrete unit may include one connecting end or may include a plurality of connecting ends (for example, as shown in fig. 17 to 19). There are two connection ends in fig. 17 and 18 and three connection ends in fig. 19, and the precast concrete unit of fig. 18 is an L-shaped unit and the precast concrete unit of fig. 19 is a T-shaped unit.
As shown in fig. 20, one receiving part of the present invention may include a plurality of coupling bars. Of course, the first, second and third longitudinal ribs may be one or more.
The precast concrete member has simple structure and convenient construction.
It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.

Claims (14)

1. A precast concrete member comprising a connection end including a receiving portion and a connection reinforcing bar received in the receiving portion;
the accommodating part comprises a transverse hole, or a transverse hole and a longitudinal hole which are communicated with each other, an opening of the transverse hole is formed in the connecting end face of the connecting end, an opening of the longitudinal hole is formed in the top face of the connecting end, and the connecting steel bar comprises a first side close to the connecting end face;
wherein the connection bar is movable in the receiving portion so as to be disposed in the receiving portion in an inclined state or a horizontal state, and when the connection bar is disposed in the receiving portion in the horizontal state, the first side protrudes out of the connection end surface.
2. The precast concrete member of claim 1, further comprising a first longitudinal rib located outside the connecting end face.
3. The precast concrete member according to claim 2, wherein the first longitudinal bar is connected to the first side, and the first longitudinal bar is movable so that the connection bar is disposed in the receiving portion in an inclined state or a horizontal state;
wherein, in an inclined state, the first longitudinal rib contacts the connecting end surface;
in a horizontal state, the first longitudinal rib is far away from the connecting end face.
4. The precast concrete unit according to claim 1, further comprising a second longitudinal bar disposed in the longitudinal hole along a length direction of the longitudinal hole, wherein the connection bar further comprises a second side far from the connection end surface, the connection bar is connected to the second longitudinal bar, and the second side can move up and down along the length direction of the second longitudinal bar, so that the connection bar is disposed in the accommodating portion in an inclined state or a horizontal state.
5. The precast concrete unit according to claim 4, wherein the second longitudinal bar is provided with a first stopper part, and the connection bar is disposed in the receiving portion in a horizontal state when the second side moves to the first stopper part.
6. The precast concrete unit according to claim 1, further comprising a third longitudinal bar disposed in the longitudinal hole along a length direction of the longitudinal hole, wherein the connection bar further comprises a second side far from the connection end surface, the third longitudinal bar is connected to the second side, and the third longitudinal bar can move up and down, so that the connection bar is disposed in the accommodating part in an inclined state or a horizontal state.
7. The precast concrete unit according to claim 6, wherein a second stopper is provided on the third longitudinal rib.
8. The precast concrete unit according to claim 1, wherein the connection bar further includes a second side far from the connection end surface, the second side includes a sliding portion, a sliding groove is formed in a bottom surface of the transverse hole or a length direction of the longitudinal hole, and the sliding portion is slidably disposed in the sliding groove, so that the connection bar is disposed in the receiving portion in an inclined state or a horizontal state.
9. The precast concrete unit according to claim 8, wherein a third stopper part is provided in the slide groove, and the connection bar is disposed in the receiving portion in a horizontal state when the second side slides to the third stopper part.
10. A precast concrete unit comprising the precast concrete member according to any one of claims 1 to 9.
11. The precast concrete assembly of claim 10, further comprising precast concrete splice members mated with the precast concrete members.
12. The precast concrete assembly of claim 11, wherein the precast concrete splicing member includes a splicing hole, and a sum of a depth of the splicing hole plus a depth of the transverse hole is greater than or equal to a length of the connecting bar.
13. The precast concrete assembly splicing method of claim 10, comprising:
adjusting the connecting steel bars of the precast concrete members from an inclined state to a horizontal state, and enabling the first sides of the connecting steel bars to extend into the connecting members;
and pouring concrete into the accommodating part to fixedly connect the precast concrete member and the connecting member together.
14. The precast concrete assembly splicing method of claim 12, comprising:
arranging the connecting end surface of the precast concrete member and the splicing end surface of the precast concrete splicing member in an opposite manner;
adjusting the connecting steel bars of the precast concrete members from an inclined state to a horizontal state, and enabling the first sides of the connecting steel bars to extend into the splicing holes; and
and pouring concrete into the accommodating part of the precast concrete member and the splicing hole of the precast concrete splicing member, so that the precast concrete member and the precast concrete splicing member are fixedly connected together.
CN202111356322.6A 2021-11-16 2021-11-16 Precast concrete member, precast concrete assembly and splicing method thereof Pending CN114396117A (en)

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CN202111356322.6A CN114396117A (en) 2021-11-16 2021-11-16 Precast concrete member, precast concrete assembly and splicing method thereof
PCT/CN2022/131427 WO2023088190A1 (en) 2021-11-16 2022-11-11 Prefabricated concrete member, prefabricated concrete assembly, and assembly method therefor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023088190A1 (en) * 2021-11-16 2023-05-25 初明进 Prefabricated concrete member, prefabricated concrete assembly, and assembly method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023088190A1 (en) * 2021-11-16 2023-05-25 初明进 Prefabricated concrete member, prefabricated concrete assembly, and assembly method therefor

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